guitastrolib / guitastro

filenames.py 174 KB
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# -*- coding: utf-8 -*-
# from typing import Dict, List, Tuple, Sequence, Any, TypeVar, Union, Callable, Literal
from typing import Tuple

"""
# https://docs.astropy.org/en/stable/samp/example_table_image.html
First launch Aladin
from astropy.samp import SAMPIntegratedClient
client = SAMPIntegratedClient()
client.connect()
params = {}
params["name"] = 'Messier 57'
params["url"] = 'file:///c:/srv/develop/pyros/vendor/guitastro/test/data/m57.fit'
message = {}
message["samp.mtype"] = "image.load.fits"
message["samp.params"] = params
client.notify_all(message)
"""

import os, glob, sys
import datetime
import math
import pathlib
#import inspect

import tkinter as tk
from tkinter.filedialog import askopenfilename, asksaveasfilename

import astropy.time

try:
    from .dates import Date
except:
    from dates import Date

try:
    from .guitastrotools import GuitastroTools, GuitastroException
except:
    from guitastrotools import GuitastroTools, GuitastroException

# #####################################################################
# #####################################################################
# #####################################################################
# Class FileNames
# #####################################################################
# #####################################################################
# This class provides tools to manage file names
# #####################################################################

class FileNamesException(GuitastroException):

    NO_FILE_FOUND = 0
    NO_NAMING_FOUND = 1
    EMPTY_STRING = 2
    BAD_PARAM = 3
    BAD_FILENAME_RULE = 4
    NO_PATHING_FOUND = 5
    BAD_PATHNAME_RULE = 6
    NO_CONTEXT_KEY_FOUND = 7
    NO_DELETE_CONTEXT_DEFAULT = 8
    BAD_NAMING = 9
    LIST_INSTEAD_A_STRING = 10

    errors = [""]*11
    errors[NO_FILE_FOUND] = "No file found"
    errors[NO_NAMING_FOUND] = "The asked naming rule was not found"
    errors[EMPTY_STRING] = "Empty string"
    errors[BAD_PARAM] = "Bad parameter"
    errors[BAD_FILENAME_RULE] = "Bad rule usage to define a filename"
    errors[NO_PATHING_FOUND] = "The asked pathing rule was not found"
    errors[BAD_PATHNAME_RULE] = "Bad rule usage to define a pathname"
    errors[NO_CONTEXT_KEY_FOUND] = "No context key found"
    errors[NO_DELETE_CONTEXT_DEFAULT] = "Context key 'default' cannot be deleted"
    errors[BAD_NAMING] = "Bad naming of the file name"
    errors[LIST_INSTEAD_A_STRING] = "Expected a string but found a list"

class FileNames(FileNamesException, GuitastroTools):
    """ Class to manage file names

    ** File name simple structure **

    Any file name can be defined at less in three parts:

        * *dirname*: A path as a prefix. e.g. '/tmp/2023/03/21'
        * *fname*: The file name without directory nor extension. e.g. 'messier63-1'
        * *extension*: The extension as a suffix (dot separator). e.g. '.fits'

    The full file name of the example is : '/tmp/2023/03/21/messier63-1.fits'
    It is recommended that 'dirname' is an absolute path.

    From a given input file name, one can split it into keys of a dictionary:

    ::

        dname = fn.dict("/home/myuser/myimages/messier57.fit")

    Three of the keys are:

        * *dirname*: "/home/myuser/myimages"
        * *fname*: "messier57"
        * *extension*: ".fit"

    ** File context **

    The file context (fcontext) of a filename is an important concept of this Class.
    It allows to manage different types of files. One type fer file context.
    For a file context, any file name is defined in four parts:

        * *rootdir*: A fixed root path as a prefix. e.g. '/tmp'
        * *subdir*: A sub-directory (can be a tree) that is added to rootdir. e.g. '2023/03/21'
        * *fname*: The file name without directory nor extension. e.g. 'messier63-1'
        * *extension*: The extension as a suffix (dot separator). e.g. '.fits'

    Note that a 'dirname' is the join of 'rootdir' and 'subdir'.
    The contents of 'subdir' can be adapted to store files by dates or any other ways.
    The contents of 'rootdir' appear as the common part of any files of this context.
    It is recommended that 'rootdir' is an absolute path.
    The use of file context is very powerfull coupled with naming and pathing rules (see later).

    A file context defines a group of (rootdir, subdir, fname, extension).
    The user can manage its own file contexts (create, delete).
    By default the user is inside the file context named 'default'. The 'default' context cannot be deleted.

    The fullfilename of the example is : '/tmp/2023/03/21/messier63-1.fits'

    ::

        fn = FileNames()
        fn.fcontext_create("images") # Create a new context named 'images'
        fn.fcontext = "images" # Select the context named 'images'
        fn.rootdir = "/tmp"
        fn.subdir = "2023/03/21"
        fn.fname = "messier63-1"
        fn.extension = ".fits"
        print(fn)

    Print should display the following items:

        * Current context: images (No description)
        * Rootdir: /tmp
        * Subdir: 2023/03/21
        * Fname: messier63-1
        * Extension: .fits

    To retreive the full file name:

    ::

        fn.join()

    It should returns '/tmp/2023/03/21/messier63-1.fits'

    **Night:**

    A night is defined as the duration between two consecutive mean noons.
    As a consequence the truncated date of the previous noon defines the night.
    For example 20230506 is the night between 2023-05-06T12:00:00 and 2023-05-07T12:00:00
    for the longitude 0 degree. For the longitude -90 it corresponds to the dates
    between 2023-05-06T18:00:00 and 2023-05-07T18:00:00:

    ::

        fn = FileNames()
        fn.longitude = -90
        night = "20230506"
        jd1, jd2 = fn.night2date(night)

    The result should be jd1=2460071.25 and  jd2=2460072.25.
    The night is usefull to dispatch data into folders corresponding to the acquisition night.

    **Night directory:**

    As astronomical images are often dispatched into night directories,
    the method date2night() returns a string corresponding to the night
    directory according an input date (i.e. DATE-OBS). The method date2night()
    consider a night as from noon to noon. To do that, before using date2night()
    you must specify the longitude of the observatory with the attribute longitude.

    ::

        fn = FileNames()
        fn.longitude = -90
        date = "2023-06-12T23:02:45"
        night = fn.date2night(date)

    Note that date can be "now" of any format of the class Date of Guitastro.
    The night name is useful when using 'subdir' to store large amount of files.

    **Naming:**

    Naming rules can be applied to verify a structured file name structure.
    By default, there is no naming rule. Namings are included into file contexts.
    List of naming rules is given by:

    ::

        fn = FileNames()
        namings = fn.namings()

    To select a naming, use the method naming(). To form a file name in respect
    of the selected naming you must prepare a dictionary as input of the
    method naming_set(). The output of naming_set() gives the formed filename.
    The reciprocal method is naming_get() which gives the dictionary from the
    file name. The selected rule description and the list of keys of the dictionary
    is returned from the method naming_rules().

    **Pathing:**

    Pathing rules can be applied to verify a structured path name structure.
    By default, there is no pathing rule. Pathings are included into file contexts.
    List of pathing rules is given by:

    ::

        fn = FileNames()
        pathings = fn.pathings()

    To select a pathing, use the method pathing(). To form a path name in respect
    of the selected pathing you must prepare a dictionary as input of the
    method pathing_set(). The output of pathing_set() gives the formed pathname.
    The reciprocal method is naming_get() which gives the dictionary from the
    file name. The selected rule description and the list of keys of the dictionary
    is returned from the method pathing_rules().




    Any file name is defined in three parts: path, shortname, extension.
    Default value of path can be get/set using the method path().
    Default value of extension can be get/set using the method extension().

    This class (when finished) will be used as parent into Guitastro classes
    who are using files.

    Instanciate an object from the class and use class methods as the following example:

    ::

        fn = FileNames()
        fn.extension(".fit")
        fs = fn.fullfilename("m57")

    **Structure of the generic file names:**

    A filename is constituted by :

        * 'dirname': The directory where the file is written.
        * 'genename': The generic name of the file.
        * 'sep': The separator character between genename and the index. Can be an empty string.
        * 'index': The index of the file into a series. Can be an empty string.
        * 'suffix': The end of the file name between the index and the extension.
        * 'file_extension': The file extension (e.g. ".fit").

    The concatenation of 'genename', 'sep', 'index', 'suffix' is called the short name.

    The full file name is the concatenation of the 'dirname', the short name and the 'extension'. For example, to obtain the full file name from a short name:

    ::

        fn = FileNames()
        shortname = "m57"
        fullname = fn.fullfilename(shortname)

    fullname could be '/tmp/m57.fit'.

    **Generic file names:**

    It is often interessant to get all the file names corresponding to a series of files.
    For example, a camera recorded the files i2.fit to i9.fit in the directory '/tmp',
    the method genename() is like a glob.glob() but gives more informations.
    The following example show how to get the information of generic name of such a series:

    ::

        fn = FileNames()
        shortname = "i1"
        imafiles = fn.genename(shortname)

    imafiles shoud be a dictionary as {'dirname': '/tmp', 'genename': 'i', 'sep': '', 'indexes': ['2', '3', '4', '5', '6', '7', '8', '9'], 'suffix': '', 'file_extension': '.fit', 'ndigit': 0}

    imafiles is useful to process a series of images.

    'ndigit' = 0 if the indexes are any number of digit. 'ndigit'=n corresponds to a format as C language "%0nd" (leading zeroes to obtain n characters).

    """

    VERBOSE_NONE = 0
    VERBOSE_SPECIFIC = 1
    VERBOSE_DEBUG = 2
    VERBOSE_ESSENTIAL = 4
    VERBOSE_ALL = 8

    NAMING_NONE = 0
    NAMING_INDEXED1 = 1
    NAMING_ROS1 = 2
    NAMING_T1M1 = 3
    NAMING_PYROS_IMG1 = 4
    NAMING_PYROS_EPH1 = 5
    NAMING_PYROS_SEQ1 = 6
    NAMING_PYROS_FIL1 = 7
    _naming_list = ["", "Indexed.1", "ROS.1", "T1M.1", "PyROS.img.1", "PyROS.eph.1", "PyROS.seq.1", "PyROS.fil.1"]
    _naming_0_stypes = ["C0A", "L0A", "L1A", "L1B", "L1C", "L1D", "L1E", "L2A", "DA0", "DA1", "FL0", "FL1", "BI0", "BI1"]
    _naming_1_stypes = ["AL", "IM", "BI", "DA", "FL"]
    _see_naming_rules = ". See method naming_rules() to get rules"
    _NAMING_RULES_SECTION_DATE = 0
    _NAMING_RULES_SECTION_INTRO = 1
    _NAMING_RULES_SECTION_FORMAT = 2
    _NAMING_RULES_SECTION_REMARKS = 3

    PATHING_NONE = 0
    PATHING_YYYYMMDD = 1
    PATHING_YYYY_YYYYMMDD = 2
    PATHING_YYYY_MM_DD = 3
    PATHING_PPPP_YYYYMMDD = 4
    _pathing_list = ["", "YYYYMMDD", "YYYY/YYYYMMDD", "YYYY/MM/DD", "PPPP/YYYYMMDD"]
    _see_pathing_rules = ". See method pathing_rules() to get rules"
    _PATHING_RULES_SECTION_INTRO = 0
    _PATHING_RULES_SECTION_FORMAT = 1
    _PATHING_RULES_SECTION_REMARKS = 2

    def __init__(self, *args, **kwargs):
        try:
            path = os.path.abspath(os.path.dirname(__file__))
            file = os.path.join(path, "guitastrotools.py")
            if path not in sys.path and os.path.exists(file):
                sys.path.append(path)
            import guitastrotools
        except:
            pass
        self._rootdir0 = guitastrotools.conf_guitastro['path_products']
        self._verbose_level = self.VERBOSE_NONE
        self._longiau_deg = 0.0
        # --- Contexts
        contexts = {}
        contexts["default"] = {'description':"No description"}
        self._context = {}
        for key, val in contexts.items():
            val['naming'] = self.NAMING_INDEXED1
            val['pathing'] = self.PATHING_NONE
            val['pathnaming'] = self.NAMING_NONE
            val['rootdir'] = self._rootdir0
            val['subdir'] = ""
            val['fname'] = "noname"
            if key.find("image") >= 0:
                val['extension'] = ".fit"
            else:
                val['extension'] = ".txt"
            self._context[key] = val
        self.fcontext = "default"
        # --- naming_rule
        if len(args) > 0 :
            self.naming(args[0])
        self.longitude = 0

    def __repr__(self):
        return str(self)

    def __str__(self):
        msg = ""
        msg += f"Longitude: {self._longiau_deg} deg (for the method get_night)."
        msg += f"\nContexts: {self.fcontexts}."
        msg += f"\nCurrent context: {self.fcontext} ({self.fdescription})"
        msg += f"\nPathnaming: {self.pathnaming()}"
        msg += f"\nNaming: {self.naming()}"
        msg += f"\nPathing: {self.pathing()}"
        msg += f"\nRootdir: {self.rootdir}"
        msg += f"\nSubdir: {self.subdir}"
        msg += f"\nFname: {self.fname}"
        msg += f"\nExtension: {self.extension}"
        return msg

    def _get_longitude(self):
        return self._longiau_deg

    def _set_longitude(self, longiau_deg:float):
        """ Set the longitude of the observation siteobs.

        This method is useful for the method get_night().

        Args:
            longiau_deg: The longitude of the siteobs must expressed in degrees, east increasing, from 0 to 360 (IAU convention).


        ::

            ima1 = Ima()
            ima1.longitude = 2.3456

        """
        self._longiau_deg = longiau_deg

    longitude = property(_get_longitude, _set_longitude)

    # =============================================
    # Print filters
    # =============================================

    def print_level(self, level:int=""):
        if isinstance(level,type(int)) == True:
            self._verbose_level = level
        return self._verbose_level

    def print_msg(self, level:int, message:str):
        if message == "":
            self._verbose_level = level
            return
        else:
            if self._verbose_level >= level:
                print(message)


    # =============================================
    # Managing naming
    # =============================================

    def namings(self):
        """List of file namings

        File names can be formed using given rules.
        This method returns a list of all possible naming rules.
        """
        return self._naming_list

    def naming(self, *args):
        """Get the current naming of files or set a new one

        Args:
            *args: a string with a new naming of files. See the list using namings().

        Returns:
            The new selected naming.

        Example: To get the current naming

        ::

            fn = FileNames()
            naming = fn.naming()

        Example: To select a new naming

        ::

            fn = FileNames()
            fn.naming("PyROS.img.1")

        """
        if len(args) >= 1:
            new_naming = args[0]
            new_namingu = new_naming.upper()
            n = len(self._naming_list)
            found = False
            for k in range(n):
                naming = self._naming_list[k]
                if naming.upper() == new_namingu:
                    self.fcontext_value('naming',k)
                    found = True
            if found == False:
                texte = f"{new_naming} not found amongst {self._naming_list}"
                raise FileNamesException(FileNamesException.NO_NAMING_FOUND, texte)
        return self._naming_list[self.fcontext_value('naming')]

    def __naming_rules_pyros_img1(self, section):
        name = self._naming_list[self.fcontext_value('naming')]
        texte = ""
        if section == self._NAMING_RULES_SECTION_DATE:
            texte += "2023-03-01T15:05:13"
        elif section == self._NAMING_RULES_SECTION_INTRO:
            texte +=f"{name} is a file name format for the images of Python Robotic Observatory Software.\n"
            texte += "Specific terminology:\n"
            texte += "* Unit: The set of Mount and Channels that define a 'telescope'.\n"
            texte += "* Channel: An optical path + camera of a Unit. A unit can have many Channels.\n"
            texte += "* Album: A set of Channels for which data can be combined by post processing.\n"
            texte += "* Sequence: A set of Albums. A sequence is a hierarchy Channels/Planes/Frames.\n"
            texte += "* Plane: A set of Frames. A Plane is composed by Frames.\n"
            texte += "* Frame: A unitary record (e.g. an image).\n"
        elif section == self._NAMING_RULES_SECTION_FORMAT:
            texte += "          1         2         3         4         5\n"
            texte += "0123456789 123456789 123456789 123456789 123456789 123\n"
            texte += "TTT_YYYYMMDD_hhmmsscccccc_V_UUU_CCC_IIIIIIIIII_PPP_FFF\n"
            texte += "\n"
            texte +=f"TTT = 'ftype' = file type amongst {self._naming_0_stypes}\n"
            texte += "YYYYMMDD = 'date' = Year Month Day. e.g. 20221109\n"
            texte += "hhmmsscccccc = 'time' = Hours Minutes Seconds Microseconds. e.g. 235604123456\n"
            texte += "V = 'version' = Version of the naming rule. e.g. 1\n"
            texte += "UUU = 'unit' = Telescope unit. e.g. TNC\n"
            texte += "CCC = 'channel' = Optical channel designation. e.g. CH1\n"
            texte += "IIIIIIIIII = 'id_seq' = ID of the file in the database. e.g. 0000001234\n"
            texte += "PPP = 'plane' = index of the plane. e.g. 001\n"
            texte += "FFF = 'frame' = index of the frame. e.g. 012\n"
        elif section == self._NAMING_RULES_SECTION_REMARKS:
            texte += "Example: L0A_20221109_235406123456_1_TNC_CH1_0123456789_001_001\n"
            texte += "UUU, CCC are accronyms (string)\n"
            texte += "V, IIIIIIIIII, PPP, FFF are digits (int)\n"
            texte += "CCC is a Channel for L0A, L1A, L1B, L1C ftype levels but should be the Album for L1D level"
        return texte

    def __naming_rules_pyros_fil1(self, section):
        name = self._naming_list[self.fcontext_value('naming')]
        texte = ""
        if section == self._NAMING_RULES_SECTION_DATE:
            texte += "2023-09-13T21:05:13"
        elif section == self._NAMING_RULES_SECTION_INTRO:
            texte +=f"{name} is a file name format for the flats of Python Robotic Observatory Software.\n"
            texte += "Specific terminology:\n"
            texte += "* Unit: The set of Mount and Channels that define a 'telescope'.\n"
            texte += "* Channel: An optical path + camera of a Unit. A unit can have many Channels.\n"
            texte += "* Album: A set of Channels for which data can be combined by post processing.\n"
            texte += "* Sequence: A set of Albums. A sequence is a hierarchy Channels/Planes/Frames.\n"
            texte += "* Plane: A set of Frames. A Plane is composed by Frames.\n"
            texte += "* Filter: A symbol of a filter (e.g. 'rp').\n"
        elif section == self._NAMING_RULES_SECTION_FORMAT:
            texte += "          1         2         3         4         5\n"
            texte += "0123456789 123456789 123456789 123456789 123456789 123\n"
            texte += "TTT_YYYYMMDD_hhmmsscccccc_V_UUU_CCC_IIIIIIIIII_PPP_f*\n"
            texte += "\n"
            texte +=f"TTT = 'ftype' = file type amongst {self._naming_0_stypes}\n"
            texte += "YYYYMMDD = 'date' = Year Month Day. e.g. 20221109\n"
            texte += "hhmmsscccccc = 'time' = Hours Minutes Seconds Microseconds. e.g. 235604123456\n"
            texte += "V = 'version' = Version of the naming rule. e.g. 1\n"
            texte += "UUU = 'unit' = Telescope unit. e.g. TNC\n"
            texte += "CCC = 'channel' = Optical channel designation. e.g. CH1\n"
            texte += "IIIIIIIIII = 'id_seq' = ID of the file in the database. e.g. 0000001234\n"
            texte += "PPP = 'plane' = index of the plane. e.g. 001\n"
            texte += "f* = 'filter' = Filter symbol. e.g. rp\n"
        elif section == self._NAMING_RULES_SECTION_REMARKS:
            texte += "Example: FL1_20221109_235406123456_1_TNC_CH1_0123456789_001_rp\n"
            texte += "UUU, CCC are accronyms (string)\n"
            texte += "V, IIIIIIIIII, PPP, are digits (int)\n"
            texte += "f* is a string (string)\n"
        return texte

    def __naming_rules_pyros_eph1(self, section):
        name = self._naming_list[self.fcontext_value('naming')]
        texte = ""
        if section == self._NAMING_RULES_SECTION_DATE:
            texte += "2023-09-09T08:24:13"
        elif section == self._NAMING_RULES_SECTION_INTRO:
            texte +=f"{name} is a file name format for the ephemeris of Python Robotic Observatory Software.\n"
            texte += "Specific terminology:\n"
            texte += "* Period: Symbol that defines a range of dates.\n"
            texte += "* Unit: The set of Mount and Channels that define a 'telescope'.\n"
        elif section == self._NAMING_RULES_SECTION_FORMAT:
            texte += "          1         2         3         4         5\n"
            texte += "0123456789 123456789 123456789 123456789 123456789 123\n"
            texte += "PPPP_YYYYMMDD_V_UUU_t*\n"
            texte += "\n"
            texte += "PPPP = 'period' = Period of validity\n"
            texte += "YYYYMMDD = 'date' = Year Month Day. e.g. 20221109\n"
            texte += "V = 'version' = Version of the naming rule. e.g. 1\n"
            texte += "UUU = 'unit' = Telescope unit. e.g. TNC\n"
            texte += "t* = Celestial target. e.g. sun\n"
        elif section == self._NAMING_RULES_SECTION_REMARKS:
            texte += "Example: P001_20221109_1_TNC_sun\n"
            texte += "UUU, PPPP are accronyms (string)\n"
            texte += "V, is digits (int)\n"
            texte += "t*, is a celestial name (string)\n"
        return texte

    def __naming_rules_pyros_seq1(self, section):
        name = self._naming_list[self.fcontext_value('naming')]
        texte = ""
        if section == self._NAMING_RULES_SECTION_DATE:
            texte += "2023-04-24T09:46:13"
        elif section == self._NAMING_RULES_SECTION_INTRO:
            texte +=f"{name} is a file name format for the sequences of Python Robotic Observatory Software.\n"
            texte += "Specific terminology:\n"
            texte += "* Period: Symbol that defines a range of dates.\n"
            texte += "* Unit: The set of Mount and Channels that define a 'telescope'.\n"
            texte += "* Channel: An optical path + camera of a Unit. A unit can have many Channels.\n"
            texte += "* Album: A set of Channels for which data can be combined by post processing.\n"
            texte += "* Sequence: A set of Albums. A sequence is a hierarchy Channels/Planes/Frames.\n"
        elif section == self._NAMING_RULES_SECTION_FORMAT:
            texte += "          1         2         3         4         5\n"
            texte += "0123456789 123456789 123456789 123456789 123456789 123\n"
            texte += "PPPP_YYYYMMDD_V_UUU_IIIIIIIIII\n"
            texte += "\n"
            texte += "PPPP = 'period' = Period of validity\n"
            texte += "YYYYMMDD = 'date' = Year Month Day. e.g. 20221109\n"
            texte += "V = 'version' = Version of the naming rule. e.g. 1\n"
            texte += "UUU = 'unit' = Telescope unit. e.g. TNC\n"
            texte += "IIIIIIIIII = 'id_seq' = ID of the sequence in the database. e.g. 0000001234\n"
        elif section == self._NAMING_RULES_SECTION_REMARKS:
            texte += "Example: P001_20221109_1_TNC_0123456789\n"
            texte += "UUU, PPPP are accronyms (string)\n"
            texte += "V, IIIIIIIIII, are digits (int)\n"
        return texte

    def __naming_rules_ros1(self, section):
        name = self._naming_list[self.fcontext_value('naming')]
        texte = ""
        if section == self._NAMING_RULES_SECTION_DATE:
            texte += "2022-11-01T15:05:13"
        elif section == self._NAMING_RULES_SECTION_INTRO:
            texte +=f"{name} is a file name format for the Robotic Observatory Software.\n"
            texte += "Specific terminology:\n"
            texte += "* Unit: The set of Mount and Channels that define a 'telescope'.\n"
            texte += "* Scene: A set of 1 to 6 images.\n"
        elif section == self._NAMING_RULES_SECTION_FORMAT:
            texte += "          1         2         3      \n"
            texte += "0123456789 123456789 123456789 123456\n"
            texte += "TT_YYYYMMDD_hhmmssccc_IIIIII_IIIIIIUU\n"
            texte += "\n"
            texte +=f"TT = 'ftype' = file type amongst {self._naming_1_stypes}\n"
            texte += "YYYYMMDD = 'date' = Year Month Day. e.g. 20221109\n"
            texte += "hhmmssccc = 'time' = Hours Minutes Seconds Milliseconds. e.g. 235604123\n"
            texte += "IIIIII_IIIIII = 'id_scene' = ID of the file in the database. e.g. 0000001234\n"
            texte += "UU = 'unit' = Telescope unit. e.g. 01\n"
        elif section == self._NAMING_RULES_SECTION_REMARKS:
            texte += "Example: IM_20220715_222616947_000003_79254401\n"
            texte += "UU are ID of telescopes (digits)\n"
            texte += "IIIIII_IIIIII are digits (int)\n"
            texte += "IIIIII_IIIIII is the ID scene IIIIIIIIIIII splited into 6 characters separated by an underscore."
        return texte

    def __naming_rules_t1m1(self, section):
        name = self._naming_list[self.fcontext_value('naming')]
        texte = ""
        if section == self._NAMING_RULES_SECTION_DATE:
            texte += "2022-11-01T15:05:13"
        elif section == self._NAMING_RULES_SECTION_INTRO:
            texte +=f"{name} is a file name format for the one meter telescope at Pic du Midi.\n"
        elif section == self._NAMING_RULES_SECTION_FORMAT:
            texte += "          1         2   \n"
            texte += "0123456789 123456789 123\n"
            texte += "T1M_YYYYMMDD_hhmmss_ccc_t*_Filtre_f*_binbxb.i\n"
            texte += "\n"
            texte += "T1M = Always 'T1M'\n"
            texte += "YYYYMMDD = 'date' = Year Month Day. e.g. 20221109\n"
            texte += "hhmmss = 'time' = Hours Minutes Seconds Milliseconds. e.g. 235604\n"
            texte += "ccc = 'millis' = Milliseconds. e.g. 123\n"
            texte += "t* = 'target' = Name of the target. e.g. 38Lyn\n"
            texte += "Filtre = Always 'Filtre'\n"
            texte += "f* = 'filter' = Filter name. e.g. 672-SII\n"
            texte += "bin = Always 'bin' for binning\n"
            texte += "bxb = 'binning' = Binning. e.g. 'bin1x1' or [1, 1] or 1\n"
            texte += "i* = 'index' = Index of the series. e.g. 1\n"
        elif section == self._NAMING_RULES_SECTION_REMARKS:
            texte += "Example: T1M_20220123_010738_702_38LYN_Filtre_672-SII_bin1x1.1\n"
            texte += "n*, f* are str\n"
            texte += "b is int\n"
            texte += "i* is int"
        return texte

    def __naming_rules_indexed1(self, section):
        name = self._naming_list[self.fcontext_value('naming')]
        texte = ""
        if section == self._NAMING_RULES_SECTION_DATE:
            texte += "2023-09-11T15:49:13"
        elif section == self._NAMING_RULES_SECTION_INTRO:
            texte +=f"{name} is a file name format for files containing an index.\n"
        elif section == self._NAMING_RULES_SECTION_FORMAT:
            texte += "          1         2   \n"
            texte += "0123456789 123456789 123\n"
            texte += "g*si*u*\n"
            texte += "\n"
            texte += "g* = 'genename' = Generic name e.g. 'M63'\n"
            texte += "s = 'sep' = Separator character e.g. '-' or nothing\n"
            texte += "i* = 'indexes' = Index or List of indexes e.g. ['1', '2'] or ['0001', '0002']\n"
            texte += "'ndigit' = Number of digits of the indexe(s) if needed e.g. '' or '4'\n"
            texte += "u* = 'suffix' = Suffix  e.g. 'B'\n"
        elif section == self._NAMING_RULES_SECTION_REMARKS:
            texte += "Example: M63-0001B\n"
            texte += "g*, s, u* are str\n"
            texte += "i* is int\n"
            texte += "'ndigit' is int"
        return texte

    def naming_rules(self) -> str:
        """Get the current naming rules for files

        Returns:
            A text file giving the rule description.

        Example:

        ::

            fn = FileNames()
            print(fn.naming_rules())

        """
        date_iso = datetime.datetime.utcnow().isoformat()
        name = self._naming_list[self.fcontext_value('naming')]
        texte = ""
        if self.fcontext_value('naming') == self.NAMING_NONE:
            texte += "Filename naming rules\n"
        else:
            texte +=f"Filename naming rules for {name}\n"
        date_iso = datetime.datetime.utcnow().isoformat()
        dat = ""
        if self.fcontext_value('naming') == self.NAMING_PYROS_IMG1:
            dat = self.__naming_rules_pyros_img1(self._NAMING_RULES_SECTION_DATE)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_SEQ1:
            dat = self.__naming_rules_pyros_seq1(self._NAMING_RULES_SECTION_DATE)
        elif self.fcontext_value('naming') == self.NAMING_ROS1:
            dat = self.__naming_rules_ros1(self._NAMING_RULES_SECTION_DATE)
        elif self.fcontext_value('naming') == self.NAMING_T1M1:
            dat = self.__naming_rules_t1m1(self._NAMING_RULES_SECTION_DATE)
        elif self.fcontext_value('naming') == self.NAMING_INDEXED1:
            dat = self.__naming_rules_indexed1(self._NAMING_RULES_SECTION_DATE)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_FIL1:
            dat = self.__naming_rules_pyros_fil1(self._NAMING_RULES_SECTION_DATE)
        if dat != "":
            texte +=f"Updated on {dat}\n"
        texte +=f"Written on {date_iso}\n"
        # ---
        h1 = "1. Introduction"
        texte +=f"\n{h1}\n" + "="*len(h1) + "\n\n"
        if self.fcontext_value('naming') == self.NAMING_NONE:
            texte += "No specific rule. File names can be formed as you want.\n"
            return texte
        elif self.fcontext_value('naming') == self.NAMING_PYROS_IMG1:
            texte += self.__naming_rules_pyros_img1(self._NAMING_RULES_SECTION_INTRO)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_EPH1:
            texte += self.__naming_rules_pyros_eph1(self._NAMING_RULES_SECTION_INTRO)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_SEQ1:
            texte += self.__naming_rules_pyros_seq1(self._NAMING_RULES_SECTION_INTRO)
        elif self.fcontext_value('naming') == self.NAMING_ROS1:
            texte += self.__naming_rules_ros1(self._NAMING_RULES_SECTION_INTRO)
        elif self.fcontext_value('naming') == self.NAMING_T1M1:
            texte += self.__naming_rules_t1m1(self._NAMING_RULES_SECTION_INTRO)
        elif self.fcontext_value('naming') == self.NAMING_INDEXED1:
            texte += self.__naming_rules_indexed1(self._NAMING_RULES_SECTION_INTRO)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_FIL1:
            texte += self.__naming_rules_pyros_fil1(self._NAMING_RULES_SECTION_INTRO)
        # ---
        h1 = "2. Format of the file names"
        texte +=f"\n{h1}\n" + "="*len(h1) + "\n\n"
        if self.fcontext_value('naming') == self.NAMING_PYROS_IMG1:
            texte += self.__naming_rules_pyros_img1(self._NAMING_RULES_SECTION_FORMAT)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_EPH1:
            texte += self.__naming_rules_pyros_eph1(self._NAMING_RULES_SECTION_FORMAT)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_SEQ1:
            texte += self.__naming_rules_pyros_seq1(self._NAMING_RULES_SECTION_FORMAT)
        elif self.fcontext_value('naming') == self.NAMING_ROS1:
            texte += self.__naming_rules_ros1(self._NAMING_RULES_SECTION_FORMAT)
        elif self.fcontext_value('naming') == self.NAMING_T1M1:
            texte += self.__naming_rules_t1m1(self._NAMING_RULES_SECTION_FORMAT)
        elif self.fcontext_value('naming') == self.NAMING_INDEXED1:
            texte += self.__naming_rules_indexed1(self._NAMING_RULES_SECTION_FORMAT)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_FIL1:
            texte += self.__naming_rules_pyros_fil1(self._NAMING_RULES_SECTION_FORMAT)
        # ---
        h1 = "3. Remarks"
        texte +=f"\n{h1}\n" + "="*len(h1) + "\n\n"
        if self.fcontext_value('naming') == self.NAMING_PYROS_IMG1:
            texte += self.__naming_rules_pyros_img1(self._NAMING_RULES_SECTION_REMARKS)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_EPH1:
            texte += self.__naming_rules_pyros_eph1(self._NAMING_RULES_SECTION_REMARKS)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_SEQ1:
            texte += self.__naming_rules_pyros_seq1(self._NAMING_RULES_SECTION_REMARKS)
        elif self.fcontext_value('naming') == self.NAMING_ROS1:
            texte += self.__naming_rules_ros1(self._NAMING_RULES_SECTION_REMARKS)
        elif self.fcontext_value('naming') == self.NAMING_T1M1:
            texte += self.__naming_rules_t1m1(self._NAMING_RULES_SECTION_REMARKS)
        elif self.fcontext_value('naming') == self.NAMING_INDEXED1:
            texte += self.__naming_rules_indexed1(self._NAMING_RULES_SECTION_REMARKS)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_FIL1:
            texte += self.__naming_rules_pyros_fil1(self._NAMING_RULES_SECTION_REMARKS)
        # ---
        texte += "\n\n=== End of the Document ==="
        return texte

    def naming_ident(self, fname:str) -> dict:
        """Identify the naming of a file name comparing with known naming rules

        Args:
            fname: a filename with no path and no extension.

        Returns:
            The identified naming.

        Example:

        ::

            fn = FileNames()
            fn.naming_ident("L0A_20221109_235406123456_1_TNC_CH1_0123456789_001_001")
            >>> 'PyROS.img.1'
        """
        p = pathlib.Path(fname)
        basename = p.name # with suffixes
        suffixes = p.suffixes
        extension = "" # all the suffixes
        for suffixe in suffixes:
            extension += suffixe
        k = basename.find(extension)
        if k>0:
            fname = basename[:k] # supress extension
        else:
            fname = basename # has no extension
        naming = self.NAMING_NONE
        n = len(fname)
        if n == 54:
            words = fname.split("_")
            n = len(words)
            if n == 9:
                param = {}
                param['ftype'] = words[0]
                param['date'] = words[1]
                param['time'] = words[2]
                param['version'] = words[3]
                param['unit'] = words[4]
                param['channel'] = words[5]
                param['id_seq'] = words[6]
                param['plane'] = words[7]
                param['frame'] = words[8]
                old_naming = self.fcontext_value('naming')
                self.fcontext_value('naming', self.NAMING_PYROS_IMG1)
                try:
                    fname_verified = self.naming_set(**param)
                    if fname == fname_verified:
                        naming = self.NAMING_PYROS_IMG1
                except:
                    pass
                self.fcontext_value('naming', old_naming)
        if n == 30:
            words = fname.split("_")
            n = len(words)
            if n == 5:
                param = {}
                param['period'] = words[0]
                param['date'] = words[1]
                param['version'] = words[2]
                param['unit'] = words[3]
                param['id_seq'] = words[4]
                old_naming = self.fcontext_value('naming')
                self.fcontext_value('naming', self.NAMING_PYROS_SEQ1)
                try:
                    fname_verified = self.naming_set(**param)
                    if fname == fname_verified:
                        naming = self.NAMING_PYROS_SEQ1
                except:
                    pass
                self.fcontext_value('naming', old_naming)
        elif n == 37:
            words = fname.split("_")
            n = len(words)
            if n == 5:
                param = {}
                param['ftype'] = words[0]
                param['date'] = words[1]
                param['time'] = words[2]
                i1 = words[3]
                iu = words[4]
                if len(iu)>2:
                    i2 = iu[:-2]
                    param['unit'] = iu[-2:]
                param['id_scene'] = i1+i2
                old_naming = self.fcontext_value('naming')
                self.fcontext_value('naming', self.NAMING_ROS1)
                try:
                    fname_verified = self.naming_set(**param)
                    if fname == fname_verified:
                        naming = self.NAMING_ROS1
                except:
                    pass
                self.fcontext_value('naming', old_naming)
        if naming == self.NAMING_NONE and n>3:
            # case of floating length file names
            if fname[:3] == "T1M":
                fname += suffixes[0]
                param = {}
                words = fname.split("_")
                n = len(words)
                if n >= 8:
                    kf = fname.find("_Filtre_", 25)
                    kb = fname.find("_bin", 36)
                    if kf > 0 and kb > 0:
                        param['date'] = words[1]
                        param['time'] = words[2]
                        param['millis'] = words[3]
                        param['target'] = fname[24:kf]
                        param['filter'] = fname[kf+len("_Filtre_"):kb]
                        rest = fname[kb+len("_bin"):]
                        b = int(rest[0])
                        param['binning'] = [b, b]
                        kd = rest.find(".")
                        kd2 = rest.find(".",kd+1)
                        if kd2 == -1:
                            kd2 = len(rest)
                        param['index'] = int(rest[kd+1:kd2])
                old_naming = self.fcontext_value('naming')
                self.fcontext_value('naming', self.NAMING_T1M1)
                try:
                    fname_verified = self.naming_set(**param)
                    if fname == fname_verified:
                        naming = self.NAMING_T1M1
                except:
                    pass
                self.fcontext_value('naming', old_naming)
            # --- Try NAMING_PYROS_EPH1
            words = fname.split("_")
            n = len(words)
            if n >= 5:
                valid = False
                if len(words[0])==4 and len(words[1])==8 and len(words[2])==1 and len(words[3])==3:
                    valid = True
                if valid == True:
                    if words[0][0] != 'P':
                        valid == False
                if valid == True:
                    param = {}
                    param['period'] = words[0]
                    param['date'] = words[1]
                    param['version'] = words[2]
                    param['unit'] = words[3]
                    k4 = 0
                    for k in range(4):
                      k4 += len(words[k]) + 1
                    param['target'] = fname[k4:]
                    old_naming = self.fcontext_value('naming')
                    self.fcontext_value('naming', self.NAMING_PYROS_EPH1)
                    try:
                        fname_verified = self.naming_set(**param)
                        if fname == fname_verified:
                            naming = self.NAMING_PYROS_EPH1
                    except:
                        pass
                    self.fcontext_value('naming', old_naming)
            # --- Try NAMING_PYROS_FIL1
            if n >= 9:
                param = {}
                param['ftype'] = words[0]
                param['date'] = words[1]
                param['time'] = words[2]
                param['version'] = words[3]
                param['unit'] = words[4]
                param['channel'] = words[5]
                param['id_seq'] = words[6]
                param['plane'] = words[7]
                k8 = 0
                for k in range(8):
                  k8 += len(words[k]) + 1
                param['filter'] = fname[k8:]
                old_naming = self.fcontext_value('naming')
                self.fcontext_value('naming', self.NAMING_PYROS_FIL1)
                try:
                    fname_verified = self.naming_set(**param)
                    if fname == fname_verified:
                        naming = self.NAMING_PYROS_FIL1
                except:
                    pass
                self.fcontext_value('naming', old_naming)
        if naming == self.NAMING_NONE:
            # Any other formats can reasch the indexed rules
            naming = self.NAMING_INDEXED1
        return self._naming_list[naming]

    def naming_get(self, fname:str) -> dict:
        """Get parameters that build the file name according the current naming rules

        Args:
            fname: a filename with no path and no extension.

        Returns:
            The parameter dictionary which differ for each naming.

        Example:

        ::

            fn = FileNames()
            fn.naming("PyROS.img.1")
            params = fn.naming_get("L0A_20221109_235406123456_1_TNC_CH1_0123456789_001_012")

        The answer (params dict) should be {'ftype': 'L0A', 'date': '20221109', 'time': '235406123456', 'version': '1', 'unit': 'TNC', 'channel': 'CH1', 'id_seq': '0123456789', 'plane': '001', 'frame': '012'}
        """
        param = {}
        see_rules = self._see_naming_rules
        # --- get only the filename from a fullpathname
        if isinstance(fname, list):
            fnames = fname
            fname = fnames[0]
        else:
            fnames = []
        dname = self.dict(fname)
        fname = dname['fname']
        fname_verified = ""
        if self.fcontext_value('naming') == self.NAMING_NONE:
            param['fname'] = fname
        elif self.fcontext_value('naming') == self.NAMING_PYROS_IMG1:
            n = len(fname)
            nn = 54
            if n != nn:
                texte =f"File name '{fname}' must be a string of {nn} characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE, texte)
            words = fname.split("_")
            n = len(words)
            nn = 9
            if n != nn:
                texte =f"File name '{fname}' must contain {nn-1} underscore characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE, texte)
            param['ftype'] = words[0]
            param['date'] = words[1]
            param['time'] = words[2]
            param['version'] = words[3]
            param['unit'] = words[4]
            param['channel'] = words[5]
            param['id_seq'] = words[6]
            param['plane'] = words[7]
            param['frame'] = words[8]
            fname_verified = self.naming_set(**param)
            if fname != fname_verified:
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_FIL1:
            n = len(fname)
            nn = 52
            if n < nn:
                texte =f"File name '{fname}' must be a string of at less {nn} characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE, texte)
            words = fname.split("_")
            n = len(words)
            nn = 9
            if n < nn:
                texte =f"File name '{fname}' must contain at less {nn-1} underscore characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE, texte)
            param['ftype'] = words[0]
            param['date'] = words[1]
            param['time'] = words[2]
            param['version'] = words[3]
            param['unit'] = words[4]
            param['channel'] = words[5]
            param['id_seq'] = words[6]
            param['plane'] = words[7]
            k8 = 0
            for k in range(8):
              k8 += len(words[k]) + 1
            param['filter'] = fname[k8:]
            fname_verified = self.naming_set(**param)
            if fname != fname_verified:
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_EPH1:
            n = len(fname)
            nn = 20
            if n <= nn:
                texte =f"File name '{fname}' must be a string of at less {nn} characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE, texte)
            words = fname.split("_")
            n = len(words)
            nn = 5
            if n < nn:
                texte =f"File name '{fname}' must contain at less {nn-1} underscore characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE, texte)
            param['period'] = words[0]
            param['date'] = words[1]
            param['version'] = words[2]
            param['unit'] = words[3]
            k4 = 0
            for k in range(4):
              k4 += len(words[k]) + 1
            param['target'] = fname[k4:]
            fname_verified = self.naming_set(**param)
            if fname != fname_verified:
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE)
        elif self.fcontext_value('naming') == self.NAMING_PYROS_SEQ1:
            n = len(fname)
            nn = 30
            if n != nn:
                texte =f"File name '{fname}' must be a string of {nn} characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE, texte)
            words = fname.split("_")
            n = len(words)
            nn = 5
            if n != nn:
                texte =f"File name '{fname}' must contain {nn-1} underscore characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE, texte)
            param['period'] = words[0]
            param['date'] = words[1]
            param['version'] = words[2]
            param['unit'] = words[3]
            param['id_seq'] = words[4]
            fname_verified = self.naming_set(**param)
            if fname != fname_verified:
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE)
        elif self.fcontext_value('naming') == self.NAMING_ROS1:
            n = len(fname)
            nn = 37
            if n != nn:
                texte =f"File name '{fname}' must be a string of {nn} characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE, texte)
            words = fname.split("_")
            n = len(words)
            nn = 5
            if n != nn:
                texte =f"File name '{fname}' must contain {nn-1} underscore characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE, texte)
            param['ftype'] = words[0]
            param['date'] = words[1]
            param['time'] = words[2]
            i1 = words[3]
            iu = words[4]
            if len(iu)>2:
                i2 = iu[:-2]
                param['unit'] = iu[-2:]
            param['id_scene'] = i1+i2
            fname_verified = self.naming_set(**param)
            if fname != fname_verified:
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE)
        elif self.fcontext_value('naming') == self.NAMING_T1M1:
            if fname[:3] == "T1M":
                fname += dname['suffixes'][0] # add the first suffix as rank
                words = fname.split("_")
                n = len(words)
                if n >= 8:
                    kf = fname.find("_Filtre_", 25)
                    kb = fname.find("_bin", 36)
                    if kf > 0 and kb > 0:
                        param['date'] = words[1]
                        param['time'] = words[2]
                        param['millis'] = words[3]
                        param['target'] = fname[24:kf]
                        param['filter'] = fname[kf+len("_Filtre_"):kb]
                        rest = fname[kb+len("_bin"):]
                        b = int(rest[0])
                        param['binning'] = [b, b]
                        kd = rest.find(".")
                        kd2 = rest.find(".",kd+1)
                        if kd2 == -1:
                            kd2 = len(rest)
                        param['index'] = int(rest[kd+1:kd2])
                        fname_verified = self.naming_set(**param)
            if fname != fname_verified:
                raise FileNamesException(FileNamesException.BAD_FILENAME_RULE)
        elif self.fcontext_value('naming') == self.NAMING_INDEXED1:
            if len(fnames) == 0:
                param = self._naming_get_indexed1(fname)
            else:
                indexes = []
                for fname in fnames:
                    param = self._naming_get_indexed1(fname)
                    indexes.append(param['indexes'])
                param['indexes'] = indexes
        # --- update fname
        self.fname = fname
        # --- return params
        return param

    def _naming_get_indexed1(self, fname):
        """Return a dict of the semantic analysis for Indexed.1

        Take account for wildcard characters.
        """
        #print(f"{fname=}")
        param = {}
        # --- search the separator for index
        is_sep = False
        seps = ['.', '_', '-']
        kseps = []
        k = len(fname) - 1
        for car in fname[::-1]:
            if car in seps:
                kseps.append(k)
            k -= 1
        # --- search a true index
        index_indexes = []
        for k1 in kseps:
            subb = fname[k1+1:]
            index = ""
            for sub in subb:
                if sub.isdigit() or sub == "*" or sub == "?":
                   index += sub
                else:
                    break
            if len(index) > 0:
                index_indexes = [k1, k1+1+len(index)]
                is_sep = True
                break
        #print(f"(1) {index_indexes=}")
        if index_indexes == []:
            param['genename'] = fname
            param['sep'] = ""
            param['indexes'] = ""
            param['ndigit'] = 0
            param['suffix'] = ""
            # --- search for an index without a separator
            k1 = -1
            k2 = -1
            ki = False
            k = len(fname) - 1
            for car in fname[::-1]:
                #print(f"{car=} {k2=} {k=}")
                if car == "*":
                    k2 = k + 1
                    k1 = k
                    break
                elif car == "?":
                    if k2 == -1:
                        k2 = k + 1
                        ki = True
                    k1 = k
                elif car.isdigit() and ki == False:
                    if k2 == -1:
                        k2 = k + 1
                    k1 = k
                else:
                    k1 = k + 1
                    #print(f"(h) {k1=}")
                    break
                k -= 1
            if k2 >=0:
                if k1 == -1:
                    k1 = 0
                index_indexes = [k1, k2]
        #print(f"(2) {index_indexes=}")
        if len(index_indexes) == 2:
            k1, k2 = index_indexes
            param['genename'] = fname[:k1]
            #print(f"=> {k1=} {k2=} {param['genename']=} {fname[k1-1:k2]=}")
            if is_sep:
                param['sep'] = fname[k1]
                param['indexes'] = fname[k1+1:k2]
            else:
                param['indexes'] = fname[k1:k2]
            if param['indexes'][0] == '0' or param['indexes'][0] == '?':
                param['ndigit'] = len(param['indexes'])
            else:
                param['ndigit'] = 0
            param['suffix'] = fname[k2:]
        else:
            if param['genename'][-1] == "*" and param['indexes'] == "":
                param['genename'] = param['genename'][:-1]
                param['indexes'] = "*"
        if param['genename'] == "" and param['indexes'] == "*":
            param['genename'] = "*"
            param['indexes'] = ""
        return param

    def naming_keys(self) -> list:
        """Return the keys of a file context

        Returns:
            Key names.

        """
        wildcard = self.naming_wildcard()
        param = self.naming_get(wildcard)
        return list(param.keys())

    def naming_wildcard(self, *args: str, **kwargs: int) -> str:
        """Return the wildcard corresponding to the naming rule

        Returns:
            The wildcard corresponding to the naming rule.

        """
        if self.fcontext_value('naming') == self.NAMING_NONE:
            wildcard = "*"
        elif self.fcontext_value('naming') == self.NAMING_PYROS_IMG1:
            wildcard = "???_????????_????????????_?_???_???_??????????_???_???"
        elif self.fcontext_value('naming') == self.NAMING_PYROS_FIL1:
            wildcard = "???_????????_????????????_?_???_???_??????????_???_*"
        elif self.fcontext_value('naming') == self.NAMING_PYROS_EPH1:
            wildcard = "????_????????_?_???_*"
        elif self.fcontext_value('naming') == self.NAMING_PYROS_SEQ1:
            wildcard = "????_????????_?_???_??????????"
        elif self.fcontext_value('naming') == self.NAMING_ROS1:
            wildcard = "??_????????_?????????_??????_????????"
        elif self.fcontext_value('naming') == self.NAMING_T1M1:
            wildcard = "T1M_????????_??????_???_*_Filtre_*_bin?x?.*"
        elif self.fcontext_value('naming') == self.NAMING_INDEXED1:
            wildcard = "*"
        # - Param constraints
        nkwa = len(kwargs)
        na = len(args)
        if nkwa > 0:
            param = self.naming_get(wildcard)
            # - case indexes
            if "i" in kwargs.keys():
                if kwargs['i'] == True and na >= 1:
                    fname = args[0]
                    param_fname = self.naming_get(fname)
                    keys = []
                    if self.fcontext_value('naming') == self.NAMING_INDEXED1:
                        keys = ['indexes']
                    elif self.fcontext_value('naming') == self.NAMING_ROS1:
                        keys = ['date','time','id_scene']
                    elif self.fcontext_value('naming') == self.NAMING_T1M1:
                        keys = ['date','time','millis','index']
                    elif self.fcontext_value('naming') == self.NAMING_PYROS_IMG1:
                        keys = ['date','time','frame']
                    elif self.fcontext_value('naming') == self.NAMING_PYROS_EPH1:
                        keys = ['date']
                    elif self.fcontext_value('naming') == self.NAMING_PYROS_SEQ1:
                        keys = ['id_seq']
                    elif self.fcontext_value('naming') == self.NAMING_PYROS_FIL1:
                        keys = ['date','time']
                    #print(f"{param_fname=}")
                    for key in keys:
                        param_fname[key] = param[key]
                    param = param_fname
                    if self.fcontext_value('naming') == self.NAMING_INDEXED1:
                        if param['indexes'] == "":
                            if param['ndigit'] > 0:
                                param['indexes'] = "?"*param['ndigit']
                            else:
                                param['indexes'] = "*"
                    #print(f"{param=}")
            # - constraints
            for key, val in kwargs.items():
                if key in param.keys():
                    param[key] = val
            wildcard = self.naming_set(param)
        return wildcard

    def naming_set(self, *args, **kwargs) -> str:
        """Set a file name formed by input parameters according the current naming

        Args:
            *args: a filename if naming is ''.
            **kwargs: a dictionnary of parameters that depends on the naming.

        Returns:
            The formed file name with no path and no extension.

        Example:

        ::

            fn = FileNames()
            fn.naming("PyROS.img.1")
            param = {}
            param['ftype'] = "L0A"
            param['date'] = "20221109"
            param['time'] = "235406123456"
            param['version'] = "1"
            param['unit'] = "TNC"
            param['channel'] = "CH1"
            param['id_seq'] = "0123456789"
            param['plane'] = "001"
            param['frame'] = "001"
            fname = fn.naming_set(**param)

        The answer should be L0A_20221109_235406123456_TNC_1_CH1_0123456789_001_001.
        For naming = "PyROS.img.1", if param['date'] is "*" or "now" then the date and time will be the current UTC time.

        If a key is lacking in the dictionary, a wildcard is replaced. Useful to get a glob.
        """
        see_rules = self._see_naming_rules
        # --- wilcards
        wildcard = self.naming_wildcard()
        # ---
        na = len(args)
        nk = len(kwargs)
        if self.fcontext_value('naming') == self.NAMING_NONE:
            if na > 0:
                fname = args[0]
        if self.fcontext_value('naming') == self.NAMING_PYROS_IMG1 or self.fcontext_value('naming') == self.NAMING_PYROS_FIL1:
            if na > 0:
                # case the dict is not **kwargs but *args
                if isinstance(args[0], dict):
                    kwargs = args[0]
                    nk = len(kwargs)
                else:
                    texte = "Dictionary of input parameters not found " + see_rules
                    raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            elif nk == 0:
                return wildcard
            # -- read kwargs
            wildcards = wildcard.split("_")
            param = {}
            param['ftype'] = wildcards[0]
            param['date'] = wildcards[1]
            param['time'] = wildcards[2]
            param['version'] = wildcards[3]
            param['unit'] = wildcards[4]
            param['channel'] = wildcards[5]
            param['id_seq'] = wildcards[6]
            param['plane'] = wildcards[7]
            if self.fcontext_value('naming') == self.NAMING_PYROS_IMG1:
                param['frame'] = wildcards[8]
            else:
                param['filter'] = wildcards[8]
            if nk > 0:
                for key, val in kwargs.items():
                    if key in param.keys():
                        param[key] = val
            # --- verify all params are set
            for key, val in param.items():
                if val == "":
                    texte = f"param {key} must not be empty string" + see_rules
                    raise FileNamesException(FileNamesException.EMPTY_STRING, texte)
            # --- verify ftype
            if isinstance(param['ftype'],str):
                if param['ftype'] != wildcards[0]:
                    if param['ftype'] not in self._naming_0_stypes:
                        texte = f"File type {param['ftype']} not found amongst {self._naming_0_stypes}" + see_rules
                        raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify date
            valid = False
            if isinstance(param['date'],str):
                if param['date'] == wildcards[1]:
                    valid = True
                elif len(param['date']) == 8:
                    if param['date'].isdigit():
                        valid = True
                elif param['date'] == "*" or param['date'] == "now":
                    d = datetime.datetime.utcnow().isoformat()
                    fdate = d[0:4]+d[5:7]+d[8:10]
                    ftime = d[11:13]+d[14:16]+d[17:19]+d[20:26]
                    param['date'] = fdate
                    param['time'] = ftime
                    valid = True
            if valid == False:
                texte = f"Date {param['date']} must be a string of 8 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify time
            valid = False
            if isinstance(param['time'],str):
                if param['time'] == wildcards[2]:
                    valid = True
                elif len(param['time']) == 12:
                    if param['time'].isdigit():
                        valid = True
            if valid == False:
                texte = f"Time {param['time']} must be a string of 12 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify version
            valid = False
            if isinstance(param['version'],str):
                if param['version'] == wildcards[3]:
                    valid = True
                elif len(param['version']) == 1:
                    valid = True
            elif isinstance(param['version'],int):
                param['version'] = f"{param['version']:01d}"
                valid = True
            if valid == False:
                texte = f"Version {param['version']} must be a string of 1 character" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify unit
            valid = False
            if isinstance(param['unit'],str):
                if param['unit'] == wildcards[4]:
                    valid = True
                elif len(param['unit']) == 3:
                    valid = True
            if valid == False:
                texte = f"Unit {param['unit']} must be a string of 3 characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify channel
            valid = False
            if isinstance(param['channel'],str):
                if param['channel'] == wildcards[5]:
                    valid = True
                elif len(param['channel']) == 3:
                    valid = True
            if valid == False:
                texte = f"Channel {param['channel']} must be a string of 3 characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify id_seq
            valid = False
            if isinstance(param['id_seq'],str):
                if param['id_seq'] == wildcards[6]:
                    valid = True
                elif len(param['id_seq']) == 10:
                    valid = True
            elif isinstance(param['id_seq'],int):
                param['id_seq'] = f"{param['id_seq']:010d}"
                valid = True
            if valid == False:
                texte = f"Id_seq {param['id_seq']} must be a string of 10 characters or an integer" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify plane
            valid = False
            if isinstance(param['plane'],str):
                if param['plane'] == wildcards[7]:
                    valid = True
                elif len(param['plane']) == 3:
                    valid = True
            elif isinstance(param['plane'],int):
                param['plane'] = f"{param['plane']:03d}"
                valid = True
            if valid == False:
                texte = f"Plane {param['plane']} must be a string of 3 characters or an integer" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify frame
            valid = False
            if self.fcontext_value('naming') == self.NAMING_PYROS_IMG1:
                if isinstance(param['frame'],str):
                    if param['frame'] == wildcards[8]:
                        valid = True
                    elif len(param['frame']) == 3:
                        valid = True
                elif isinstance(param['frame'],int):
                    param['frame'] = f"{param['frame']:03d}"
                    valid = True
                if valid == False:
                    texte = f"Frame {param['frame']} must be a string of 3 characters or an integer" + see_rules
                    raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            else:
                if isinstance(param['filter'],int):
                    param['filter'] = str(param['filter'])
                if isinstance(param['filter'],str):
                    if param['filter'] == wildcards[8]:
                        valid = True
                    elif len(param['filter']) >= 1:
                        valid = True
                if valid == False:
                    texte = f"Frame {param['frame']} must be a string of at less 1 character or an integer" + see_rules
                    raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- form final file name
            if self.fcontext_value('naming') == self.NAMING_PYROS_IMG1:
                fname = param['ftype']+"_"+param['date']+"_"+param['time']+"_"+param['version']+"_"+param['unit']+"_"+param['channel']+"_"+param['id_seq']+"_"+param['plane']+"_"+param['frame']
            else:
                fname = param['ftype']+"_"+param['date']+"_"+param['time']+"_"+param['version']+"_"+param['unit']+"_"+param['channel']+"_"+param['id_seq']+"_"+param['plane']+"_"+param['filter']
        if self.fcontext_value('naming') == self.NAMING_PYROS_EPH1:
            if na > 0:
                # case the dict is not **kwargs but *args
                if isinstance(args[0], dict):
                    kwargs = args[0]
                    nk = len(kwargs)
                else:
                    texte = "Dictionary of input parameters not found " + see_rules
                    raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            elif nk == 0:
                return wildcard
            # -- read kwargs
            wildcards = wildcard.split("_")
            param = {}
            param['period'] = wildcards[0]
            param['date'] = wildcards[1]
            param['version'] = wildcards[2]
            param['unit'] = wildcards[3]
            param['target'] = wildcards[4]
            if nk > 0:
                for key, val in kwargs.items():
                    if key in param.keys():
                        param[key] = val
            # --- verify all params are set
            for key, val in param.items():
                if val == "":
                    texte = f"param {key} must not be empty string" + see_rules
                    raise FileNamesException(FileNamesException.EMPTY_STRING, texte)
            # --- verify period
            valid = False
            if isinstance(param['period'],str):
                if param['period'] == wildcards[0]:
                    valid = True
                elif len(param['period']) == 4:
                    valid = True
            if valid == False:
                texte = f"Period {param['period']} must be a string of 4 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify date
            valid = False
            if isinstance(param['date'],str):
                if param['date'] == wildcards[1]:
                    valid = True
                elif len(param['date']) == 8:
                    if param['date'].isdigit():
                        valid = True
                elif param['date'] == "*" or param['date'] == "now":
                    d = datetime.datetime.utcnow().isoformat()
                    fdate = d[0:4]+d[5:7]+d[8:10]
                    ftime = d[11:13]+d[14:16]+d[17:19]+d[20:26]
                    param['date'] = fdate
                    param['time'] = ftime
                    valid = True
            if valid == False:
                texte = f"Date {param['date']} must be a string of 8 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify version
            valid = False
            if isinstance(param['version'],str):
                if param['version'] == wildcards[2]:
                    valid = True
                elif len(param['version']) == 1:
                    valid = True
            elif isinstance(param['version'],int):
                param['version'] = f"{param['version']:01d}"
                valid = True
            if valid == False:
                texte = f"Version {param['version']} must be a string of 1 character" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify unit
            valid = False
            if isinstance(param['unit'],str):
                if param['unit'] == wildcards[3]:
                    valid = True
                elif len(param['unit']) == 3:
                    valid = True
            if valid == False:
                texte = f"Unit {param['unit']} must be a string of 3 characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify target
            valid = False
            if isinstance(param['target'],str):
                if param['target'] == wildcards[4]:
                    valid = True
            if valid == False:
                v = kwargs.get('target')
                if v is not None:
                    param['target'] = v
                    valid = True
            if valid == False:
                texte = f"Target {param['target']} must be a string" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- form final file name
            fname = param['period']+"_"+param['date']+"_"+param['version']+"_"+param['unit']+"_"+param['target']
        if self.fcontext_value('naming') == self.NAMING_PYROS_SEQ1:
            if na > 0:
                # case the dict is not **kwargs but *args
                if isinstance(args[0], dict):
                    kwargs = args[0]
                    nk = len(kwargs)
                else:
                    texte = "Dictionary of input parameters not found " + see_rules
                    raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            elif nk == 0:
                return wildcard
            # -- read kwargs
            wildcards = wildcard.split("_")
            param = {}
            param['period'] = wildcards[0]
            param['date'] = wildcards[1]
            param['version'] = wildcards[2]
            param['unit'] = wildcards[3]
            param['id_seq'] = wildcards[4]
            if nk > 0:
                for key, val in kwargs.items():
                    if key in param.keys():
                        param[key] = val
            # --- verify all params are set
            for key, val in param.items():
                if val == "":
                    texte = f"param {key} must not be empty string" + see_rules
                    raise FileNamesException(FileNamesException.EMPTY_STRING, texte)
            # --- verify period
            valid = False
            if isinstance(param['period'],str):
                if param['period'] == wildcards[0]:
                    valid = True
                elif len(param['period']) == 4:
                    valid = True
            if valid == False:
                texte = f"Period {param['period']} must be a string of 4 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify date
            valid = False
            if isinstance(param['date'],str):
                if param['date'] == wildcards[1]:
                    valid = True
                elif len(param['date']) == 8:
                    if param['date'].isdigit():
                        valid = True
                elif param['date'] == "*" or param['date'] == "now":
                    d = datetime.datetime.utcnow().isoformat()
                    fdate = d[0:4]+d[5:7]+d[8:10]
                    ftime = d[11:13]+d[14:16]+d[17:19]+d[20:26]
                    param['date'] = fdate
                    param['time'] = ftime
                    valid = True
            if valid == False:
                texte = f"Date {param['date']} must be a string of 8 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify version
            valid = False
            if isinstance(param['version'],str):
                if param['version'] == wildcards[2]:
                    valid = True
                elif len(param['version']) == 1:
                    valid = True
            elif isinstance(param['version'],int):
                param['version'] = f"{param['version']:01d}"
                valid = True
            if valid == False:
                texte = f"Version {param['version']} must be a string of 1 character" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify unit
            valid = False
            if isinstance(param['unit'],str):
                if param['unit'] == wildcards[3]:
                    valid = True
                elif len(param['unit']) == 3:
                    valid = True
            if valid == False:
                texte = f"Unit {param['unit']} must be a string of 3 characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify id_seq
            valid = False
            if isinstance(param['id_seq'],str):
                if param['id_seq'] == wildcards[4]:
                    valid = True
                elif len(param['id_seq']) == 10:
                    valid = True
            elif isinstance(param['id_seq'],int):
                param['id_seq'] = f"{param['id_seq']:010d}"
                valid = True
            if valid == False:
                texte = f"Id_seq {param['id_seq']} must be a string of 10 characters or an integer" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- form final file name
            fname = param['period']+"_"+param['date']+"_"+param['version']+"_"+param['unit']+"_"+param['id_seq']
        if self.fcontext_value('naming') == self.NAMING_ROS1:
            if na > 0:
                # case the dict is not **kwargs but *args
                if isinstance(args[0], dict):
                    kwargs = args[0]
                    nk = len(kwargs)
                else:
                    texte = "Dictionary of input parameters not found " + see_rules
                    raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            elif nk == 0:
                return wildcard
            # -- read kwargs
            wildcards = wildcard.split("_")
            param = {}
            param['ftype'] = wildcards[0]
            param['date'] = wildcards[1]
            param['time'] = wildcards[2]
            param['id_scene'] = "????????????"
            param['unit'] = "??"
            if nk > 0:
                for key, val in kwargs.items():
                    if key in param.keys():
                        param[key] = val
            # --- verify all params are set
            for key, val in param.items():
                if val == "":
                    texte = f"param {key} must not be empty string" + see_rules
                    raise FileNamesException(FileNamesException.EMPTY_STRING, texte)
            # --- verify ftype
            if isinstance(param['ftype'],str):
                if param['ftype'] == wildcards[0]:
                    valid = True
                if param['ftype'] not in self._naming_1_stypes:
                    texte = f"File type {param['ftype']} not found amongst {self._naming_1_stypes}" + see_rules
                    raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify date
            valid = False
            if isinstance(param['date'],str):
                if param['date'] == wildcards[1]:
                    valid = True
                elif len(param['date']) == 8:
                    if param['date'].isdigit():
                        valid = True
                elif param['date'] == "*" or param['date'] == "now":
                    d = datetime.datetime.utcnow().isoformat()
                    fdate = d[0:4]+d[5:7]+d[8:10]
                    ftime = d[11:13]+d[14:16]+d[17:19]+d[20:26]
                    param['date'] = fdate
                    param['time'] = ftime
                    valid = True
            if valid == False:
                texte = f"Date {param['date']} must be a string of 8 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify time
            valid = False
            if isinstance(param['time'],str):
                if param['time'] == wildcards[2]:
                    valid = True
                if len(param['time']) == 9:
                    if param['time'].isdigit():
                        valid = True
            if valid == False:
                texte = f"Time {param['time']} must be a string of 9 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify id_scene
            valid = False
            if isinstance(param['id_scene'],str):
                if param['id_scene'] == wildcards[3]:
                    valid = True
                elif len(param['id_scene']) == 12:
                    valid = True
            elif isinstance(param['id_scene'],int):
                param['id_scene'] = f"{param['id_scene']:012d}"
                valid = True
            if valid == False:
                texte = f"Version {param['id_scene']} must be a string of 12 character" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify unit
            valid = False
            if isinstance(param['unit'],str):
                if param['id_scene'] == wildcards[4]:
                    valid = True
                elif len(param['unit']) == 2:
                    valid = True
            if valid == False:
                texte = f"Unit {param['unit']} must be a string of 2 characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- form final file name
            fname = param['ftype']+"_"+param['date']+"_"+param['time']+"_"+param['id_scene'][:6]+"_"+param['id_scene'][6:]+param['unit']
        if self.fcontext_value('naming') == self.NAMING_T1M1:
            if na > 0:
                # case the dict is not **kwargs but *args
                if isinstance(args[0], dict):
                    kwargs = args[0]
                    nk = len(kwargs)
                else:
                    texte = "Dictionary of input parameters not found " + see_rules
                    raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            elif nk == 0:
                return wildcard
            # -- read kwargs
            wildcards = wildcard.split("_")
            param = {}
            param['date'] = wildcards[1]
            param['time'] = wildcards[2]
            param['millis'] = wildcards[3]
            param['target'] = wildcards[4]
            param['filter'] = wildcards[6]
            b = wildcards[7]
            kd = b.find(".")
            param['binning'] = b[:kd]
            iwildcards = wildcard.split(".")
            param['index'] = iwildcards[1]
            if nk > 0:
                for key, val in kwargs.items():
                    if key in param.keys():
                        param[key] = val
            # --- verify all params are set
            for key, val in param.items():
                if val == "":
                    texte = f"param {key} must not be empty string" + see_rules
                    raise FileNamesException(FileNamesException.EMPTY_STRING, texte)
            # --- verify date
            valid = False
            if isinstance(param['date'],str):
                if param['date'] == wildcards[1]:
                    valid = True
                elif len(param['date']) == 8:
                    if param['date'].isdigit():
                        valid = True
                elif param['date'] == "*" or param['date'] == "now":
                    d = datetime.datetime.utcnow().isoformat()
                    fdate = d[0:4]+d[5:7]+d[8:10]
                    ftime = d[11:13]+d[14:16]+d[17:19]+d[20:26]
                    param['date'] = fdate
                    param['time'] = ftime
                    valid = True
            if valid == False:
                texte = f"Date {param['date']} must be a string of 8 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify time
            valid = False
            if isinstance(param['time'],str):
                if param['time'] == wildcards[2]:
                    valid = True
                elif len(param['time']) == 6:
                    if param['time'].isdigit():
                        valid = True
            if valid == False:
                texte = f"Time {param['time']} must be a string of 6 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify milliseconds
            valid = False
            if isinstance(param['millis'],str):
                if param['millis'] == wildcards[3]:
                    valid = True
                elif len(param['millis']) == 3:
                    if param['millis'].isdigit():
                        valid = True
            if valid == False:
                texte = f"Millis {param['millis']} must be a string of 3 digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify target
            valid = False
            if isinstance(param['target'],str):
                if param['target'] == wildcards[4]:
                    valid = True
                else:
                    valid = True
            if valid == False:
                texte = f"Target {param['target']} must be a string" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify filtre
            valid = False
            if isinstance(param['filter'],str):
                if param['filter'] == wildcards[6]:
                    valid = True
                else:
                    valid = True
            if valid == False:
                texte = f"Filter {param['filter']} must be a string" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify binning
            valid = False
            if isinstance(param['binning'],str):
                if param['binning'] == wildcards[7]:
                    valid = True
                else:
                    n = len(param['binning'])
                    if n==1:
                        param['binning'] = f"bin{param['binning']}x{param['binning']}"
                    valid = True
            elif isinstance(param['binning'],int):
                param['binning'] = f"bin{param['binning']:1d}x{param['binning']:1d}"
                valid = True
            elif isinstance(param['binning'],list):
                if len(param['binning']) > 1:
                    b1, b2 = param['binning']
                    param['binning'] = f"bin{b1}x{b2}"
                    valid = True
            if valid == False:
                texte = f"Binning {param['binning']} must be a string or an integer" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify index
            valid = False
            if isinstance(param['index'],str):
                print(f"{iwildcards=:}")
                if param['index'] == iwildcards[1]:
                    valid = True
                elif param['index'].isdigit():
                    valid = True
            elif isinstance(param['index'],int):
                param['index'] = f"{param['index']}"
                valid = True
            if valid == False:
                texte = f"Index {param['index']} must be an integer" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- form final file name
            fname = "T1M_"+param['date']+"_"+param['time']+"_"+param['millis']+"_"+param['target']+"_Filtre_"+param['filter']+"_"+param['binning']+"."+param['index']
        if self.fcontext_value('naming') == self.NAMING_INDEXED1:
            if na > 0:
                # case the dict is not **kwargs but *args
                if isinstance(args[0], dict):
                    kwargs = args[0]
                    nk = len(kwargs)
                else:
                    texte = "Dictionary of input parameters not found " + see_rules
                    raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            elif nk == 0:
                return wildcard
            # -- read kwargs
            param = {}
            param['genename'] = wildcard
            param['sep'] = ""
            param['indexes'] = ""
            param['ndigit'] = 0
            param['suffix'] = ""
            if nk > 0:
                for key, val in kwargs.items():
                    if key in param.keys():
                        param[key] = val
            # --- verify genename
            valid = False
            if isinstance(param['genename'],str):
                valid = True
            if valid == False:
                texte = f"Genename {param['genename']} must be a string" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify sep
            valid = False
            seps = ["", ".", "-", "_"]
            if isinstance(param['sep'],str):
                if param['sep'] in seps:
                    valid = True
            if valid == False:
                texte = f"Separator {param['sep']} must be a string amongst {seps}" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- verify indexes
            valid = False
            index_exists = False
            if isinstance(param['indexes'],list):
                if len(param['indexes']) == 1:
                    # case ['']
                    if param['indexes'][0] == "":
                        valid = True
                else:
                    # case ['1', '2', ...]
                    valid = True
                    index_exists = True
                    for index in param['indexes']:
                        if isinstance(index,str):
                            if not index.isdigit():
                                valid = False
                                index_exists = False
                                break
                        else:
                            valid = False
                            index_exists = False
                            break
            if isinstance(param['indexes'],str):
                # case '' or '*'
                if param['indexes'] == "":
                    valid = True
                if param['indexes'].isdigit() or param['indexes'] == "*":
                    valid = True
                    index_exists = True
                if len(param['indexes']) > 0:
                    if param['indexes'][0] == "?":
                        valid = True
                        index_exists = True
            if valid == False:
                texte = f"Indexes {param['indexes']} must be a string or a list of strings" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)

            # --- Update the default values of wildcards
            if index_exists == False and len(param['sep']) > 0:
                if param['ndigit'] > 0:
                    param['indexes'] = "?"*param['ndigit']
                else:
                    param['indexes'] = "*"
            # --- verify suffix
            valid = False
            if isinstance(param['suffix'],str):
                valid = True
            if valid == False:
                texte = f"Suffix {param['suffix']} must be a string" + see_rules
                raise FileNamesException(FileNamesException.BAD_PARAM, texte)
            # --- form final file name
            gname = param['genename']
            if param['sep'] != "":
                gname += param['sep']
            if index_exists:
                if isinstance(param['indexes'],list):
                    fname = []
                    for index in param['indexes']:
                        fname.append( gname + index + param['suffix'])
                else:
                    fname = gname + param['indexes'] + param['suffix']
            else:
                fname = gname + param['suffix']
        # --- update fname
        self.fname = fname
        return fname

    def naming_date(self, date:Date) -> str:
        """Compute dates in various string formats.

        It is a tool that returns a dictionary allowing to form names.

        Args:
            date: Date to transform.

        Returns:
            The formed file name with no path and no extension.

        Example:

        ::

            fn = FileNames()
            fn.naming_date("2023-01-03T12:43:27.876983")

        The result should be {'iso': '2023-01-03T12:43:27.876983', 'iso\_': '2023_01_03_12_43_27_876983', 'yyyy': '2023', 'mm': '43', 'dd': '03', 'hh': '12', 'ss': '27', 'yyyymmdd': '20230103', 'hhmmss': '124327', 'hhmmssssssss': '124327876983'}
        """
        date = Date(date);
        digits = date.digits(6)
        d = {}
        d['iso'] = date.iso(6, 'T')
        d['iso_'] = d['iso'].replace("-","_")
        d['iso_'] = d['iso_'].replace(":","_")
        d['iso_'] = d['iso_'].replace(".","_")
        d['iso_'] = d['iso_'].replace("T","_")
        d['yyyy'] = digits[:4]
        d['mm'] = digits[4:6]
        d['dd'] = digits[6:8]
        d['hh'] = digits[8:10]
        d['mm'] = digits[10:12]
        d['ss'] = digits[12:14]
        d['yyyymmdd'] = digits[:8]
        d['night'] = self.date2night(date)
        d['hhmmss'] = digits[8:14]
        d['hhmmssssssss'] = d['hhmmss'] + digits[15:21]
        d['millis'] = digits[15:18]
        return d

    # =============================================
    # Managing pathing
    # =============================================

    def pathings(self):
        """List of file pathings

        Path names can be formed using given rules.
        This method returns a list of all possible naming rules.
        """
        return self._pathing_list

    def pathing(self, *args, **kwargs):
        """Get the current naming of paths or set a new one

        Args:
            *args: a string with a new naming of paths. See the list using namings().

        Returns:
            The new selected naming.

        Example: To get the current naming

        ::

            fn = FileNames()
            pathing = fn.pathing()

        Example: To select a new naming

        ::

            fn = FileNames()
            fn.pathing("YYYY/MM/DD")

        """
        if len(args) >= 1:
            new_pathing = args[0]
            new_pathingu = new_pathing.upper()
            n = len(self._pathing_list)
            found = False
            for k in range(n):
                pathing = self._pathing_list[k]
                if pathing.upper() == new_pathingu:
                    self.fcontext_value('pathing', k)
                    found = True
            if found == False:
                texte = f"{new_pathing} not found amongst {self._pathing_list}"
                raise FileNamesException(FileNamesException.NO_PATHING_FOUND, texte)
        return self._pathing_list[self.fcontext_value('pathing')]

    def __pathing_rules_yyyymmdd(self, section):
        name = self._pathing_list[self.fcontext_value('pathing')]
        texte = ""
        if section == self._PATHING_RULES_SECTION_INTRO:
            texte +=f"{name} is a path name format.\n"
        elif section == self._PATHING_RULES_SECTION_FORMAT:
            texte += "          1\n"
            texte += "0123456789 \n"
            texte += "YYYYMMDD\n"
            texte += "\n"
            texte += "YYYY = 'yyyy' = Year. e.g. 2022\n"
            texte += "MM = 'mm' = Month. e.g. 11\n"
            texte += "DD = 'dd' = Day. e.g. 09\n"
        elif section == self._PATHING_RULES_SECTION_REMARKS:
            texte += "Example: 20221109\n"
            texte += "YYYY, MM, DD are digits (int)"
        return texte

    def __pathing_rules_yyyy_yyyymmdd(self, section):
        name = self._pathing_list[self.fcontext_value('pathing')]
        texte = ""
        if section == self._PATHING_RULES_SECTION_INTRO:
            texte +=f"{name} is a path name format.\n"
        elif section == self._PATHING_RULES_SECTION_FORMAT:
            texte += "          1\n"
            texte += "0123456789 12\n"
            texte += "YYYY/YYYYMMDD\n"
            texte += "\n"
            texte += "YYYY = 'yyyy' = Year. e.g. 2022\n"
            texte += "YYYY = 'yyyy' = Year. e.g. 2022\n"
            texte += "MM = 'mm' = Month. e.g. 11\n"
            texte += "DD = 'dd' = Day. e.g. 09\n"
        elif section == self._PATHING_RULES_SECTION_REMARKS:
            texte += "Example: 2022/20221109\n"
            texte += "YYYY, MM, DD are digits (int)\n"
            texte += "YYYY is repeated as a suffix directory."
        return texte

    def __pathing_rules_yyyy_mm_dd(self, section):
        name = self._pathing_list[self.fcontext_value('pathing')]
        texte = ""
        if section == self._PATHING_RULES_SECTION_INTRO:
            texte +=f"{name} is a path name format.\n"
        elif section == self._PATHING_RULES_SECTION_FORMAT:
            texte += "          1\n"
            texte += "0123456789 12\n"
            texte += "YYYY/MM/DD\n"
            texte += "\n"
            texte += "YYYY = 'yyyy' = Year. e.g. 2022\n"
            texte += "MM = 'mm' = Month. e.g. 11\n"
            texte += "DD = 'dd' = Day. e.g. 09\n"
        elif section == self._PATHING_RULES_SECTION_REMARKS:
            texte += "Example: 2022/11/09\n"
            texte += "YYYY, MM, DD are digits (int)."
        return texte

    def __pathing_rules_pppp_yyyymmdd(self, section):
        name = self._pathing_list[self.fcontext_value('pathing')]
        texte = ""
        if section == self._PATHING_RULES_SECTION_INTRO:
            texte +=f"{name} is a path name format.\n"
        elif section == self._PATHING_RULES_SECTION_FORMAT:
            texte += "          1\n"
            texte += "0123456789 12\n"
            texte += "PPPP/YYYYMMDD\n"
            texte += "\n"
            texte += "PPPP = 'pppp' = Period e.g. P001\n"
            texte += "YYYY = 'yyyy' = Year. e.g. 2022\n"
            texte += "MM = 'mm' = Month. e.g. 11\n"
            texte += "DD = 'dd' = Day. e.g. 09\n"
        elif section == self._PATHING_RULES_SECTION_REMARKS:
            texte += "Example: P001/20221109\n"
            texte += "YYYY, MM, DD are digits (int)"
        return texte

    def pathing_rules(self) -> str:
        """Get the current naming rules for paths

        Returns:
            A text file giving the rule description.

        Example:

        ::

            fn = FileNames()
            print(fn.pathing_rules())

        """
        date_iso = datetime.datetime.utcnow().isoformat()
        name = self._pathing_list[self.fcontext_value('pathing')]
        texte = ""
        if self.fcontext_value('pathing') == self.PATHING_NONE:
            texte += "Pathname naming rules\n"
        else:
            texte +=f"Pathname naming rules for {name}\n"
        date_iso = datetime.datetime.utcnow().isoformat()
        texte += "Updated on 2022-12-01T16:25:00\n"
        texte +=f"Written on {date_iso}\n"
        # ---
        h1 = "1. Introduction"
        texte +=f"\n{h1}\n" + "="*len(h1) + "\n\n"
        if self.fcontext_value('pathing') == self.PATHING_NONE:
            texte += "No specific rule. Path names can be formed as you want.\n"
            return texte
        elif self.fcontext_value('pathing') == self.PATHING_YYYYMMDD:
            texte += self.__pathing_rules_yyyymmdd(self._PATHING_RULES_SECTION_INTRO)
        elif self.fcontext_value('pathing') == self.PATHING_YYYY_YYYYMMDD:
            texte += self.__pathing_rules_yyyy_yyyymmdd(self._PATHING_RULES_SECTION_INTRO)
        elif self.fcontext_value('pathing') == self.PATHING_YYYY_MM_DD:
            texte += self.__pathing_rules_yyyy_mm_dd(self._PATHING_RULES_SECTION_INTRO)
        elif self.fcontext_value('pathing') == self.PATHING_PPPP_YYYYMMDD:
            texte += self.__pathing_rules_pppp_yyyymmdd(self._PATHING_RULES_SECTION_INTRO)
        # ---
        h1 = "2. Format of the path names"
        texte +=f"\n{h1}\n" + "="*len(h1) + "\n\n"
        if self.fcontext_value('pathing') == self.PATHING_YYYYMMDD:
            texte += self.__pathing_rules_yyyymmdd(self._PATHING_RULES_SECTION_FORMAT)
        if self.fcontext_value('pathing') == self.PATHING_YYYY_YYYYMMDD:
            texte += self.__pathing_rules_yyyy_yyyymmdd(self._PATHING_RULES_SECTION_FORMAT)
        if self.fcontext_value('pathing') == self.PATHING_YYYY_MM_DD:
            texte += self.__pathing_rules_yyyy_mm_dd(self._PATHING_RULES_SECTION_FORMAT)
        if self.fcontext_value('pathing') == self.PATHING_PPPP_YYYYMMDD:
            texte += self.__pathing_rules_pppp_yyyymmdd(self._PATHING_RULES_SECTION_FORMAT)
        # ---
        h1 = "3. Remarks"
        texte +=f"\n{h1}\n" + "="*len(h1) + "\n\n"
        if self.fcontext_value('pathing') == self.PATHING_YYYYMMDD:
            texte += self.__pathing_rules_yyyymmdd(self._PATHING_RULES_SECTION_REMARKS)
        if self.fcontext_value('pathing') == self.PATHING_YYYY_YYYYMMDD:
            texte += self.__pathing_rules_yyyy_yyyymmdd(self._PATHING_RULES_SECTION_REMARKS)
        if self.fcontext_value('pathing') == self.PATHING_YYYY_MM_DD:
            texte += self.__pathing_rules_yyyy_mm_dd(self._PATHING_RULES_SECTION_REMARKS)
        if self.fcontext_value('pathing') == self.PATHING_PPPP_YYYYMMDD:
            texte += self.__pathing_rules_pppp_yyyymmdd(self._PATHING_RULES_SECTION_REMARKS)
        # ---
        texte += "\n\n=== End of the Document ==="
        return texte


    def pathing_get(self, pname:str) -> dict:
        """Get parameters that form the path name according the current pathing

        Args:
            pname: a pathname with no file name.

        Returns:
            The parameter dictionary which differ for each pathing.

        Example:

        ::

            fn = FileNames()
            fn.pathing("YYYY/MM/DD")
            params = fn.pathing_get("/tmp/2023/01/04")
            params = fn.pathing_get("/tmp/20230104")

        The answer (params dict) should be {'date': '2022-11-09T00:00:00', 'night': False}
        """
        param = {}
        see_rules = self._see_pathing_rules
        dname = self.dict(pname)
        #print(f"> {dname=:}")
        pnames = dname['parts']
        #print(f"> {pnames=:}")
        if self.fcontext_value('pathing') == self.PATHING_NONE:
            param['fname'] = fname
        elif self.fcontext_value('pathing') == self.PATHING_YYYYMMDD or self.fcontext_value('pathing') == self.PATHING_YYYY_YYYYMMDD or self.fcontext_value('pathing') == self.PATHING_PPPP_YYYYMMDD:
            np = len(pnames)
            if np > 0:
                p = pnames[-1]
                n = len(p)
            nn = 8
            if np == 0 or n != nn:
                texte =f"Path name must be a string of {nn} characters" + see_rules
                raise FileNamesException(FileNamesException.BAD_PATHNAME_RULE, texte)
            yyyy = p[:4]
            mm = p[4:6]
            dd = p[6:8]
            if self.fcontext_value('pathing') == self.PATHING_YYYY_YYYYMMDD:
                if np > 1:
                    p = pnames[-2]
                    n = len(p)
                nn = 4
                if np <= 1 or n != nn:
                    texte =f"Path name must be two strings of {nn} and 8 characters" + see_rules
                    raise FileNamesException(FileNamesException.BAD_PATHNAME_RULE, texte)
                if self.fcontext_value('pathing') == self.PATHING_PPPP_YYYYMMDD:
                    param['period'] = p
        elif self.fcontext_value('pathing') == self.PATHING_YYYY_MM_DD:
            np = len(pnames)
            valid = True
            if np > 2:
                k = -3
                yyyy = pnames[k]
                if len(yyyy) != 4:
                    k = -4
                    yyyy = pnames[k]
                    if len(yyyy) != 4:
                        valid = False
                k += 1
                mm = pnames[k]
                if len(mm) != 2:
                    valid = False
                k += 1
                dd = pnames[k]
                if len(dd) != 2:
                    valid = False
                if valid == False:
                    texte = f"Path name {yyyy} {mm} {dd} must be three strings of 4, 2 and 2 characters" + see_rules
                    raise FileNamesException(FileNamesException.BAD_PATHNAME_RULE, texte)
            else:
                texte = f"Path {np} name {pnames} must have undercores" + see_rules
                raise FileNamesException(FileNamesException.BAD_PATHNAME_RULE, texte)
        if self.fcontext_value('pathing') == self.PATHING_YYYYMMDD or self.fcontext_value('pathing') == self.PATHING_YYYY_YYYYMMDD or self.fcontext_value('pathing') == self.PATHING_YYYY_MM_DD or self.fcontext_value('pathing') == self.PATHING_PPPP_YYYYMMDD:
            valid = True
            if yyyy.isdigit() == False:
                valid = False
            if mm.isdigit() == False:
                valid = False
            if dd.isdigit() == False:
                valid = False
            if valid == False:
                texte = "Path name must be strings of YYYY, MM, DD characters of digits" + see_rules
                raise FileNamesException(FileNamesException.BAD_PATHNAME_RULE, texte)
            param['date'] = yyyy+"-"+mm+"-"+dd+"T00:00:00"
            param['night'] = False
        #print(f">> {dname:=}")
        return param


    def pathing_set(self, *args, **kwargs) -> str:
        """Set a path name formed by input parameters according the current pathing

        Args:
            *args: a pathname if naming is ''.
            **kwargs: a dictionnary of parameters that depends on the pathing.

        Returns:
            The formed path name with no path and no extension.

        Example:

        ::

            fn = FileNames()
            fn.pathing("YYYY/MM/DD")
            fn.longitude = 45.678
            param = {}
            param['date'] = "2021-10-26T13:45:23"
            param['night'] = True
            pname = fn.pathing_set(**param)

        The answer should be '2021/10/26' (Linux) or '2021\\10\\26' (Windows).
        If param['date'] is "*" then the date and time will be the current UTC time.
        """
        see_rules = self._see_pathing_rules
        if self.fcontext_value('pathing') == self.PATHING_NONE:
            pname = args[0]
        if self.fcontext_value('pathing') == self.PATHING_YYYYMMDD or self.fcontext_value('pathing') == self.PATHING_YYYY_YYYYMMDD or self.fcontext_value('pathing') == self.PATHING_YYYY_MM_DD or self.fcontext_value('pathing') == self.PATHING_PPPP_YYYYMMDD:
            if len(args) > 0:
                if isinstance(args[0],dict):
                    kwargs = args[0]
            elif len(kwargs)==0:
                return self.pathing_rules()
            # -- read kwargs
            param = {}
            param['date'] = ""
            if self.fcontext_value('pathing') == self.PATHING_YYYY_MM_DD:
                param['night'] = True
            else:
                param['night'] = False
            if len(kwargs) > 0:
                for key, val in kwargs.items():
                    if key in param.keys():
                        param[key] = val
            # --- verify all params are set
            for key, val in param.items():
                if val == "":
                    if key == 'date' and not isinstance(param['night'], bool):
                        continue
                    texte = f"param {key} must not be empty string" + see_rules
                    raise FileNamesException(FileNamesException.EMPTY_STRING, texte)
            # --- decode date
            if param['night'] == True:
                digits = self.get_night(param['date'])
            elif param['night'] == False:
                date = Date(param['date'])
                digits = date.digits(0)
            else:
                if isinstance(param['night'],str):
                    suffix = ""
                    length = len(param['night'])
                    if length<8:
                        suffix = "0"*(8-length)
                    digits = param['night'] + suffix
                else:
                    digits = "0"*8
            yyyy = digits[:4]
            mm = digits[4:6]
            dd = digits[6:8]
            pname = ""
            if self.fcontext_value('pathing') == self.PATHING_YYYYMMDD:
                pname = yyyy+mm+dd
            elif self.fcontext_value('pathing') == self.PATHING_YYYY_YYYYMMDD:
                pname = os.path.join(yyyy, yyyy+mm+dd)
            elif self.fcontext_value('pathing') == self.PATHING_YYYY_MM_DD:
                pname = os.path.join(yyyy, mm, dd)
            elif self.fcontext_value('pathing') == self.PATHING_PPPP_YYYYMMDD:
                pppp = "P000"
                if 'period' in kwargs.keys():
                    if isinstance(kwargs['period'],str):
                        suffix = ""
                        length = len(kwargs['period'])
                        if length<4:
                            suffix = "X"*(4-length)
                        pppp = kwargs['period'] + suffix
                pname = os.path.join(pppp, yyyy+mm+dd)
        # --- update the dict
        self.subdir = pname
        # --- return the path
        return pname

    # =============================================
    # Managing pathnaming (path + names)
    # =============================================

    def pathnamings(self):
        """List of pathnamings

        Path and file names can be formed using given rules.
        This method returns a list of all possible pathnaming rules.
        The pathanming should be one amongst the namings (pathnaming and naming shared the same symbols).
        """
        return self._naming_list

    def pathnaming(self, *args, **kwargs):
        """Get the current pathnaming of files or set a new one

        The choice of a pathnaming will set the pathing and the naming.

        Args:
            *args: args[0] a string with a new pathnaming of files. See the list using pathnamings().
            **kwargs: a dictionary of options.

        Returns:
            The new selected pathnaming.

        Example: To get the current pathnaming

        ::

            fn = FileNames()
            pathnaming = fn.pathnaming()

        Example: To select a new pathnaming

        ::

            fn = FileNames()
            fn.pathnaming("PyROS.img.1")

        """
        if len(args) >= 1:
            new_naming = args[0]
            new_namingu = new_naming.upper()
            n = len(self._naming_list)
            found = False
            for k in range(n):
                naming = self._naming_list[k]
                if naming.upper() == new_namingu:
                    self.fcontext_value('pathnaming', k)
                    found = True
            if found == False:
                texte = f"{new_naming} not found amongst {self._naming_list}"
                raise FileNamesException(FileNamesException.NO_NAMING_FOUND, texte)
            self.fcontext_value('naming', self.fcontext_value('pathnaming'))
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_IMG1:
            self.fcontext_value('pathing', self.PATHING_YYYYMMDD)
        elif self.fcontext_value('pathnaming') == self.NAMING_PYROS_EPH1:
            self.fcontext_value('pathing', self.PATHING_PPPP_YYYYMMDD)
        elif self.fcontext_value('pathnaming') == self.NAMING_PYROS_SEQ1:
            self.fcontext_value('pathing', self.PATHING_PPPP_YYYYMMDD)
        elif self.fcontext_value('pathnaming') == self.NAMING_PYROS_FIL1:
            self.fcontext_value('pathing', self.PATHING_YYYYMMDD)
        return self._naming_list[self.fcontext_value('pathnaming')]

    def pathnaming_set(self, pkw:dict, nkw:dict, extension="") -> str:
        """Set a full file name formed by input parameters according the current pathnaming

        Args:
            *args: a pathname if naming is ''.
            **kwargs: a dictionnary of parameters that depends on the pathing.

        Returns:
            The full file name with no extension.

        Example:

        ::

            fn = FileNames()
            fn.pathnaming("PyROS.img.1")
            fn.longitude = 45.678
            date = "2021-10-26T13:45:23"
            fnd = fn.naming_date(date)
            pparam = {}
            pparam['date'] = fnd['iso']
            pparam['night'] = True
            fparam = {}
            fparam['ftype'] = "L0"
            fparam['date'] = fnd['yyyymmdd']
            fparam['time'] = fnd['hhmmssssssss']
            fparam['version'] = "1"
            fparam['unit'] = "TNC"
            fparam['channel'] = "CH1"
            fparam['id_seq'] = 123456789
            fparam['plane'] = 1
            fparam['frame'] = 1
            fullname = fn.pathnaming_set(pparam, fparam, ".fits")

        The answer should be '/tmp\\2021\\10\\26\\L0_20211026_134522999983_1_TNC_CH1_0123456789_001_001.fits'
        """
        path = ""
        fname = ""
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_IMG1:
            path = self.pathing_set(**pkw)
            fname = self.naming_set(**nkw)
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_EPH1:
            path = self.pathing_set(**pkw)
            fname = self.naming_set(**nkw)
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_SEQ1:
            path = self.pathing_set(**pkw)
            fname = self.naming_set(**nkw)
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_FIL1:
            path = self.pathing_set(**pkw)
            fname = self.naming_set(**nkw)
        fullname = os.path.join(path, fname) + extension
        return fullname

    def pathnaming_get(self, filename:str) -> tuple:
        """Returns the dictionaries of naming and pathing

        Args:

            filename: A file name with or without path or extension.

        Returns:

            (naming_dict, pathing_dict)

        """
        pkw = {}
        nkw = {}
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_IMG1:
            pkw = self.pathing_get(filename)
            nkw = self.naming_get(filename)
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_EPH1:
            pkw = self.pathing_get(filename)
            nkw = self.naming_get(filename)
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_SEQ1:
            pkw = self.pathing_get(filename)
            nkw = self.naming_get(filename)
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_FIL1:
            pkw = self.pathing_get(filename)
            nkw = self.naming_get(filename)
        return pkw, nkw

    def subdir_from_filename(self, filename:str, outfname:bool = False)->str:
        """Get the subdir from a full file name according to a file context.

        Get also the fname if outfname=True.

        Args:

            filename: A file name with or without path or extension.
            outfname: Returns also the fname if True (default value is False).

        Returns:

            subdir or (subdir, fname) according the outfname value.
        """
        if isinstance(filename,list):
            texte = f"Filename {filename} is a list instead to be a string"
            raise FileNamesException(FileNamesException.LIST_INSTEAD_A_STRING, texte)
        subdir = os.path.dirname(filename)
        fname = filename
        nkw = self.naming_get(filename)
        if outfname:
            if self.fcontext_value('naming') == self.NAMING_NONE:
                fname = nkw['fname']
            else:
                fname = self.naming_set(nkw)
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_IMG1 or self.fcontext_value('pathnaming') == self.NAMING_PYROS_FIL1:
            d = nkw['date']
            t = nkw['time']
            date = d[0:4]+"-"+d[4:6]+"-"+d[6:8]+"T"+t[0:2]+":"+t[2:4]+":"+t[4:6]
            fnd = self.naming_date(date)
            pparam = {}
            pparam['date'] = fnd['iso']
            pparam['night'] = True
            fullname = self.pathnaming_set(pparam, nkw)
            #print(f"fullname={fullname}")
            subdir = os.path.dirname(fullname)
        if self.fcontext_value('pathnaming') == self.NAMING_PYROS_SEQ1 or self.fcontext_value('pathnaming') == self.NAMING_PYROS_EPH1:
            pparam = {}
            pparam['period'] = nkw['period']
            pparam['night'] = nkw['date']
            fullname = self.pathnaming_set(pparam, nkw)
            #print(f"fullname={fullname}")
            subdir = os.path.dirname(fullname)
        if outfname:
            return subdir, fname
        return subdir

    def update_subdir_fname_from_filename(self, filename:str, update:bool = True)->tuple:
        """Get the subdir and the fname from a full file name according to a file context.

        Args:

            filename: A file name with or without path or extension.
            update: Update the keys 'subdir' and 'fname' if True (default value).

        Returns:

            subdir, fname
        """
        subdir, fname = self.subdir_from_filename(filename, True)
        if update:
            if self.fcontext_value('pathing') != self.PATHING_NONE:
                self.fcontext_value('subdir', subdir)
            self.fcontext_value('fname', fname)
        return subdir, fname

    # =============================================
    # Managing nightname
    # =============================================

    def date2night(self, date: str="now", sampling: int=0)->str:
        """Get the current night identifier as a string of 8 characters: YYYYMMDD.

        The night identifier changes at local noon. So it uses the longitude defined in longitude attribute.

        Args:
            date: Input date to compute the night identifier. Defaut value is "now".
            sampling: Compute the index corresponding to the given sampling (0 by default meaning no index calculation)

        Returns:
            The night identifier string YYYYMMDD.
            The index if sampling > 0

        Simple case where we compute the night of the current time:

        ::

            fn = FileNames()
            fn.longitude = 2.3456
            night = fn.get_night("now")

        The variable night contains the current night in the format YYYYMMDD.

        A more complex case. We ask for the index corresponding to the time inside a given night:

            fn = FileNames()
            fn.longitude = 2.3456
            night, index = fn.get_night("now", 65536)

        """
        # night is the truncated part of the date of the previous noon
        jd_frac_noon = - self._longiau_deg / 360.0
        #print(f"jd_frac_noon={jd_frac_noon}")
        # --- UTC JD
        jd = Date(date).jd()
        if False:
            if date.lower()=="now":
                date_iso = datetime.datetime.utcnow().isoformat()
                #date_iso = '2021-08-16 10:57:00'
                #print(f"date_iso={date_iso}")
                t = astropy.time.Time(date_iso)
                jd = t.jd
            else:
                jd = Date(date).jd()
        #print(f"jd={jd}")
        # --- Noon JD
        jd_noon = jd - jd_frac_noon
        #print(f"jd_noon={jd_noon}")
        jd0 = math.floor(jd_noon)
        # --- Convert into digits
        t = astropy.time.Time(jd0, format='jd')
        t_iso = t.iso
        night = t_iso[0:4] + t_iso[5:7] + t_iso[8:10]
        if sampling == 0:
            return night
        # --- index
        #index = round((jd-jd_noon)*sampling)
        index = round((jd-jd0)*sampling)
        return night, index

    def night2date(self, night: str="now")->str:
        """Get the current julian day limits from a night identifier as a string of 8 characters: YYYYMMDD.

        The night identifier changes at local noon. So it uses the longitude defined in longitude attribute.

        Args:
            date: The night identifier string YYYYMMDD or a date (default is "now").

        Returns:
            A tupple of two julian days.

        ::

            fn = FileNames()
            fn.longitude = 2.3456
            jd1, jd2 = fn.night2date("20230320")

        The variable night contains the current night in the format YYYYMMDD.
        """
        # night is the truncated part of the date of the previous noon
        jd_frac_noon = - self._longiau_deg / 360.0
        if len(night)!=8:
            night = self.date2night(night)
        # --- date is a night
        date = f"{night[0:4]}-{night[4:6]}-{night[6:8]}T00:00:00"
        d = Date(date)
        jd = d.jd()
        #print(f"jd={jd}")
        # --- Noon JD
        jd_noon = jd + 0.5 + jd_frac_noon
        return (jd_noon, jd_noon+1)

    def get_night(self, date: str="now")->str:
        """Obsolete method replaced by date2night
        """
        return self.date2night(date)

    # =============================================
    # Managing context of paths
    # =============================================

    def _context_get(self):
        return self._context_current_key

    def _context_set(self, context_key: str):
        self._context_verify(context_key)
        self._context_current_key = context_key

    def _context_del(self):
        self.fcontext_delete(self._context_current_key)

    def _context_verify(self, context_key: str):
        if context_key not in self._context.keys():
            texte = f"{context_key} not found amongst {self._context.keys()}"
            raise FileNamesException(FileNamesException.NO_CONTEXT_KEY_FOUND, texte)

    def _context_list(self):
        return list(self._context.keys())

    # - context keys
    fcontext = property(_context_get, _context_set, _context_del)
    fcontexts = property(_context_list)

    # - subkey rootdir
    def _rootdir_get(self):
        key = 'rootdir'
        return self._context[self._context_current_key][key]

    def _rootdir_set(self, value:str):
        key = 'rootdir'
        self._context[self._context_current_key][key] = value

    rootdir = property(_rootdir_get, _rootdir_set)

    # - subkey fname
    def _fname_get(self):
        key = 'fname'
        return self._context[self._context_current_key][key]

    def _fname_set(self, value:str):
        key = 'fname'
        self._context[self._context_current_key][key] = value

    fname = property(_fname_get, _fname_set)

    # - subkey extension
    def _extension_get(self):
        key = 'extension'
        return self._context[self._context_current_key][key]

    def _extension_set(self, value:str):
        key = 'extension'
        self._context[self._context_current_key][key] = value

    extension = property(_extension_get, _extension_set)

    # - subkey subdir
    def _subdir_get(self):
        key = 'subdir'
        return self._context[self._context_current_key][key]

    def _subdir_set(self, value:str):
        key = 'subdir'
        self._context[self._context_current_key][key] = value

    subdir = property(_subdir_get, _subdir_set)

    # - subkey fdescription
    def _fdescription_get(self):
        key = 'description'
        return self._context[self._context_current_key][key]

    def _fdescription_set(self, value:str):
        key = 'description'
        self._context[self._context_current_key][key] = value

    fdescription = property(_fdescription_get, _fdescription_set)

    # - subkey managment
    def fcontext_value(self, key:str="", val=None):
        if key == "":
            return self._context[self._context_current_key]
        if val == None:
            return self._context[self._context_current_key][key]
        self._context[self._context_current_key][key] = val

    # - context key managment
    def fcontext_create(self, context_key: str, description: str="No description"):
        if context_key not in self._context.keys():
            val = {}
            val['description'] = description
            val['naming'] = self.NAMING_NONE
            val['pathing'] = self.PATHING_NONE
            val['pathnaming'] = self.NAMING_NONE
            val['rootdir'] = self._rootdir0
            val['subdir'] = ""
            val['fname'] = "noname"
            if context_key.find("image") >= 0:
                val['extension'] = ".fit"
            else:
                val['extension'] = ".txt"
            self._context[context_key] = val

    def fcontext_delete(self, context_key: str):
        self._context_verify(context_key)
        if context_key != "default":
            del self._context[context_key]
            self._context_set("default")
        else:
            raise FileNamesException(FileNamesException.NO_DELETE_CONTEXT_DEFAULT)

    def fcontext_delete_all(self):
        for context_key in list(self._context.keys()):
            if context_key != "default":
                del self._context[context_key]
        self._context_set("default")

    def fcontext_replace(self, fn):
        """Replace all fcontexts of the object by fcontexts from another object.

        Args:
            fn: Is a FileNames instance.
        """
        if id(self) == id(fn):
            return
        self.fcontext_delete_all()
        for context_key in fn.fcontexts:
            if context_key != "default":
                fn.fcontext = context_key
                self.fcontext_create(context_key, fn.fdescription)
                self.fcontext = context_key
                self.pathnaming(fn.pathnaming())
                self.naming(fn.naming())
                self.pathing(fn.pathing())
                self.rootdir = fn.rootdir
                self.subdir = fn.subdir
                self.fname = fn.fname
                self.extension = fn.extension
        self._context_set("default")

    def fcontexts_human(self) -> str:
        """Return a human reading description of all file contexts. Each file context is described in one line.

        Returns:

            Each file context is described in one line.
        """
        text = ""
        fcname0 = self.fcontext
        for fcname in self.fcontexts:
            self.fcontext = fcname
            text += f"{fcname} : {self.fdescription} {self.rootdir}/[{self.pathing()}]/[{self.naming()}]{self.extension}\n"
        self.fcontext = fcname0
        return text

    # =============================================
    # Managing filenames
    # =============================================

    def _path_get(self):
        """ Get the path of images.

        If the path does not exists, it is created.

        """
        rootdir = self._context[self._context_current_key]['rootdir']
        subdir = self._context[self._context_current_key]['subdir']
        path = os.path.join(rootdir, subdir)
        return path

    path = property(_path_get)

    def dict(self, fullfilename:str) -> dict:
        """Split the input filename and return a dictionary of the analysis ('dirname', 'fname', 'extension', etc.)

        Ther analysis is based on the pathlib library.
        Ref: https://docs.python.org/3/library/pathlib.html

        Args:

            fullfilename: A file name with or without path or extension

        Returns:

            Dictionary of file name informations

        """
        p = pathlib.Path(fullfilename)
        try:
            p = p.resolve() # eliminate '..' if exist
        except:
            # p.resolve does not work with '*' characters
            pass
        absolute = p.absolute()
        drive = absolute.drive
        cwd = p.cwd()
        dirname = str(p.parent)
        if '*' in dirname or '?' in dirname:
            wildcard_dirname = True
        else:
            wildcard_dirname = False
        basename = p.name # with suffixes
        naming = self.naming_ident(basename)
        suffixes = p.suffixes
        extension = "" # all the suffixes
        for suffixe in suffixes:
            extension += suffixe
        k = basename.find(extension)
        if k>0:
            name = basename[:k] # supress extension
        else:
            name = basename # has no extension
        if '*' in name or '?' in name:
            wildcard_fname = True
        else:
            wildcard_fname = False
        parts = p.parts
        dico = {}
        # --- Initial input
        dico['input'] = str(p)
        dico['absolute'] = str(absolute)
        # --- Directory
        dico['dirname'] = dirname
        dico['wildcard_dirname'] = wildcard_dirname
        dico['parts'] = parts # dirname as a list
        dico['cwd'] = str(cwd) # current working dir (not necessarily dirname)
        dico['drive'] = drive
        # --- File name
        dico['fname'] = name # file name with no dirname and no extension
        dico['wildcard_fname'] = wildcard_fname # bool if fname is a wildcard
        dico['naming'] = naming
        # --- Extension
        dico['extension'] = extension
        dico['suffixes'] = suffixes # list
        # --
        return dico

    def join(self, filename:str = "") -> str:
        """Join the four parts of a context to get a full file name.

        Args:

            filename: A file name from which the fname will be extracted and subdir calculated. Initial path and extensions are lost. If filename is "" the current contents of the context is used to generate the output full file name.

        Returns:

            The full file name in a string (rootdir, subdir, fname, extension)

        First consider the following file context:

        ::

            fn = FileNames()
            fn.longitude = 165.85944
            fn.fcontext_create("my_context", "Test")
            fn.fcontext = "my_context"
            fn.rootdir = "/tmp"
            fn.extension = ".fit"

        Use the method update_subdir_fname_from_filename to update 'subdir' and 'fname' in the context from the filename. Then use join whith no parameter:

        ::

            in_fullname = "/home/myuser/messier63.fits.gz"
            fn.update_subdir_fname_from_filename(in_fullname)
            out_fullname = fn.join()

        out_fullname should be '/tmp/messier63.fit'.

        The following example do the same thing but with no use of the method update_subdir_fname_from_filename:

        ::

            in_fullname = "/home/myuser/messier63.fits.gz"
            out_fullname = fn.join(in_fullname)

        """
        if isinstance(filename, list):
            fname_ins = filename
            fname_outs = []
            for filename in fname_ins:
                self.update_subdir_fname_from_filename(filename)
                fname_out = os.path.join(self.rootdir, self.subdir, self.fname + self.extension)
                fname_outs.append(fname_out)
            return fname_outs
        elif filename != "":
            self.update_subdir_fname_from_filename(filename)
        fname_out = os.path.join(self.rootdir, self.subdir, self.fname + self.extension)
        return fname_out

    def joinabs(self, filename:str = ""):
        """Join the four parts of a context to get a full file name with absolute path.

        Args:

            filename: A file name from which the fname will be extracted and subdir calculated. Initial path and extensions are lost. If filename is "" the current contents of the context is used to generate the output full file name.

        Returns:

            The full file name in a string with absolute path (rootdir, subdir, fname, extension)
        """
        if isinstance(filename, list):
            fname_ins = filename
            fname_outs = []
            for filename in fname_ins:
                fname_out = os.path.abspath(self.join(filename))
                fname_outs.append(fname_out)
            return fname_outs
        return os.path.abspath(self.join(filename))


    def glob(self, *args, **kwargs) -> list:
        """Glob from a wildcard. Add -R to be recursive.

        Args:

            *args:

                * '-R': Recursive option
                * '-fc': Use the current fcontext option
                * (str): A wildcard with a complete path. The name must compatible with the current fcontext if the option "-fc" is present.

            *kwargs: Options when calling _join() in case of use of fcontext.

        Returns:

            A filename list of existing files of the disk verifying the wildcard.

        Examples:

            fn.glob("/tmp/user/M65*.fit", "-R")

        """
        recursif = False
        use_fcontext = False
        for arg in args:
            if isinstance(arg, str):
                if arg == "-R":
                    recursif = True
                if arg == "-fc":
                    use_fcontext = True
                else:
                    wildcard = arg
        if use_fcontext:
            wildcard = self._join(args, kwargs)
        p = pathlib.Path()
        if recursif:
            res = p.rglob(wildcard)
        else:
            res = p.glob(wildcard)
        res = [str(re) for re in res]
        return res

    def _join(self, *args, **kwargs) -> str:
        """ Build the complete any file name (folder and extension) or wildcard compatible with the current fcontext

        Args:

            *args:

                * '-f': Force to update the fcontext attributes
                * (str): A file name or wildcard compatible with the current fcontext

            **kwargs:

                * Any key of the fcontext to force at a given value

        Returns:

            A filename or a wildcard with the path and extension according the fcontext.

        Examples:

            fn._join("M65", "-f", sep="-", indexes="*")
        """
        # --- Get parameters from *args
        fname_input = None
        pdict_input = {}
        force = False
        for arg in args:
            if isinstance(arg, str):
                if arg == "-f" or arg == "-force":
                    force = True
                else:
                    fname_input = arg
                    pdict_input = self.dict(fname_input)
        # --- Default wilcard of the current fcontext
        param_wildcard = fn.naming_get(self.naming_wildcard())
        #print(f"(100) {param_wildcard=}")
        # --- Get parameters from *kwargs compatible with the fcontext param keys
        param_inputs = {}
        for key, val in kwargs.items():
            if key in param_wildcard:
                param_inputs[key] = val
        # --- Extract param from the fname_input
        if fname_input == None:
            # no file was provided
            param = param_wildcard
        else:
            # no file was provided
            param = self.naming_get(fname_input)
        #print(f"(200) {param=}")
        # --- Set kwargs in the wilcard of the current fcontext
        for key, val in param_inputs.items():
            param[key] = param_inputs[key]
        # --- Modify fcontext attributes if forced
        if force:
            #print(f"{pdict_input=}")
            if pdict_input['wildcard_dirname'] == False and pdict_input['dirname'] != ".":
                self.rootdir = pdict_input['dirname']
            self.extension = pdict_input['extension']
        # --- Build the filename
        fname_input = self.naming_set(param)
        #print(f"(300) {fname_input=}")
        fullname_input = self.joinabs(fname_input)
        #print(f"{fullname_input=}")
        return fullname_input

    def split_dir_name_extension(self, fullfilename:str) -> Tuple[str, str, str]:
        """Split a full filename into three parts: Path, name, extension

        Extension starts with the first dot in the filename without path.

        Args:

            fullfilename: A file name with or without path or extension

        Returns:

            (path, name, extension)

        """
        dico = self.dict(fullfilename)
        return dico['dirname'], dico['fname'], dico['extension']

    def fullfilename(self,filename: str = "") -> str:
        """ Get the full name according any entry.

        Args:
            filename: Input file name with or without path or extension.

        Returns:
            The complete name of the file.

        ::

            fn = FileNames()
            fullname = fn.fullfilename("m57")

        The result could be '/srv/develop/guitastro/test/data/m57.fit'

        If you want to change the default path use the method *path*.
        To change the default file extension use the method *extension*.
        """
        if filename == "":
            dirname = self.path
            basename = self.fname
            file_extension = self.extension
            parts = []
        else:
            dico = self.dict(filename)
            dirname, basename, file_extension, parts = dico['dirname'], dico['fname'], dico['extension'], dico['parts']
        if dirname == "" or len(parts)==1:
            # --- add the current image path
            fitsname = os.path.join(self.rootdir, self.subdir, basename)
        else:
            fitsname = os.path.join(dirname, basename)
        # --- add the extension
        if file_extension == "":
            extension = self.extension
        else:
            extension = file_extension
        fitsname += extension
        # --- verify naming
        if self.naming != "":
            naming = self.naming_ident(fitsname)
            if naming != self.naming():
                msg = f"File name is {basename}. The file naming {naming} is not {self.naming()}. Print method naming_rules() to display rules of {self.naming()}"
                raise FileNamesException(FileNamesException.BAD_NAMING, msg)
        # --- update
        self.fname = basename
        self.extension = extension
        return fitsname

    def basename(self, fitsname:str)->str:
        """ Get the base name according any entry.

        Args:
            fitsname: Input file name with or without path or extension.

        Returns:
            The base name of the file (with its extension).

        ::

            fn = FileNames()
            fullname = fn.basename("m57")

        The result could be 'm57.fit'

        To change the default file extension use the method *extension*.
        """
        fitsname = self.fullfilename(fitsname)
        # --- extract the basename
        basename = os.path.basename(fitsname)
        return basename

    def itername(self, fitsname:str, **kwargs):
        """Get an iterator according a series of files.

        The list of file names is generated internally by the method genename().

        Args:
            fitsname: Input file name of a series with or without path or extension.
            **kwargs: a dictionnary of optional parameters:

                * 'first': Lower index to keep indexes.
                * 'last': Upper index to keep indexes.
                * 'indexes': List of indexes to keep (integers).

        Returns:
            The iterator of the series of files.

        For example, you have 3 files m63-1.fit, m63-2.fit and m63-3.fit.
        You have to put one of the three file names as input of the method itername:

        ::

            fn = FileNames()
            for fitsname in fn.itername("m63-1"):
                print(f"fitsname={fitsname}")

        """
        dico = self.genename(fitsname)
        dirname = dico['dirname']
        genename = dico['genename']
        sep = dico['sep']
        indexes = dico['indexes']
        suffix = dico['suffix']
        file_extension = dico['file_extension']
        for index in indexes:
            fitsname = os.path.join(dirname, genename + sep + index + suffix + file_extension)
            yield fitsname

    def enumname(self, fitsname: str, **kwargs):
        """Get an enumerator according a series of files.

        The list of file names is generated internally by the method genename().

        Args:
            fitsname: Input file name of a series with or without path or extension.
            **kwargs: a dictionnary of optional parameters:

                * 'first': Lower index to keep indexes.
                * 'last': Upper index to keep indexes.
                * 'indexes': List of indexes to keep (integers).

        Returns:
            The iterator of the series of files.

        For example, you have 3 files m63-1.fit, m63-2.fit and m63-3.fit.
        You have to put one of the three file names as input of the method enumname:

        ::

            fn = FileNames()
            for k, fitsname in enumarate(fn.enumname("m63-1")):
                print(f"fitsname {k} = {fitsname}")

        """
        dico = self.genename(fitsname, **kwargs)
        dirname = dico['dirname']
        genename = dico['genename']
        sep = dico['sep']
        indexes = dico['indexes']
        suffix = dico['suffix']
        file_extension = dico['file_extension']
        fitsnames = []
        for index in indexes:
            fitsname = os.path.join(dirname, genename + sep + index + + suffix + file_extension)
            fitsnames.append(fitsname)
        return fitsnames

    def genenames(self, wildcard: str)-> dict:
        """Generate a dictionnary describing a series of files associated to a wildcard file name.

        Generated file names are existing in the disk.
        This method is similar as genename() but the input file is a wildcard and the output dictionary is different.

        Args:
            wildcard: Any wildcard with extension. The path is that defined in the method path() is not in the wildcard.

        Returns:
            A dictionary containing the following keys:

                * 'dirname': Directory name (path only)
                * 'shortname': Short name (no path, extension)
                * 'filename': Full name of file (no path, shortname, no extension)
                * 'ext': Extension of the file

        For example, you have 3 files m63-1.fit, m63-2.fit and m63-3.fit.
        You have to put one of the three file names as input of the method genename:

        ::

            fn = FileNames()
            result = fn.genenames("m63-*.fits")

        """
        # fn.genenames("IM_*.fits.gz")
        wildcard = self.fullfilename(wildcard)
        #print(f"wildcard = {wildcard}")
        ftmps = glob.glob(wildcard)
        allshortnames = []
        for ftmp in ftmps:
            basename = os.path.basename(ftmp)
            dirname = os.path.dirname(ftmp)
            allshortnames.append(basename)
        #  ---
        allshorts = []
        for shortname in allshortnames:
            dico = {}
            #nchar = len(shortname)
            dname, filename , file_extension = self.split_dir_name_extension(shortname)
            dico['dirname'] = dirname
            dico['shortname'] = shortname
            dico['filename'] = filename
            dico['ext'] = file_extension
            #for shortname_ref in allshortnames:
            #    nchar_ref = len(shortname_ref)
            allshorts.append(dico)

        return allshorts

    def genename(self,fitsname: str, **kwargs)-> dict:
        """Generate a dictionnary describing a series of files associated to a file name.

        The algorithm search for files having indexes with a name similar than fitsname.
        Generated file names are existing in the disk.
        This method adds the possibility to restrict indexes using options 'first', 'last' and 'indexes' (using optional parameters).

        Args:
            fitsname: Any file name with or without path or extension.
            **kwargs: a dictionnary of optional parameters:

                * 'first': Lower index to keep indexes.
                * 'last': Upper index to keep indexes.
                * 'indexes': List of indexes to keep (integers).

        Returns:
            A dictionary containing the following keys:

                * 'dirname': Path name
                * 'genename': Generic name of files
                * 'sep': Separator between generic name and indexes
                * 'indexes': List of indexes sorted increasing
                * 'file_extension': File extension
                * 'ndigit': Number of digits in case of indexes with leading zeros

        For example, you have 3 files m63-1.fit, m63-2.fit and m63-3.fit.
        You have to put one of the three file names as input of the method genename:

        ::

            fn = FileNames()
            result = fn.genename("m63-1")

        The index "1" is not necessary. So the command fn.genename("m63-") gives the same result.

        For example, you have 6 files m63-1.fit, m63-2.fit ... m63-6.fit.
        You have to put one of the three file names as input of the method genename
        and if you want to keep only files after the index 4:

        ::

            fn = FileNames()
            result = fn.genename("m63-1", first=4)

        Indexes of 'first' and 'last' options can be negative (to start from end to begin).

        """
        print(f"STEP 1000 {fitsname=}")
        fitsname = self.fullfilename(fitsname)
        print(f"STEP 1001 {fitsname=}")
        # --- extract the basename
        filename, file_extension = os.path.splitext(fitsname)
        basename = os.path.basename(filename)
        #print(f"0 basename={basename}")
        print(f"STEP 1010 {basename=}")
        suffix = ""
        # --- search for the first index where there is no numeric char
        n = len(basename)
        indice = ""
        sep = ""
        k = 0
        for k in range(n-1,0,-1):
            car = basename[k]
            print(f"car={car} k={k}")
            if car.isnumeric() == False:
                sep = basename[k]
                break
            indice += car
        print(f"1 k={k} indice={indice}")
        print(f"1 basename = {basename}")
        if indice == "":
            genename = basename
            sep = ""
        else:
            # --- valid the sepration between genename and indice
            if sep=="-" or sep=="_":
                genename = basename[0:k]
            else:
                genename = basename[0:k]
                sep = ""
        # --- count the number of files corresponding to the genename
        dirname = os.path.dirname(fitsname)
        wildcard = os.path.join(dirname, genename + sep + "*" + file_extension)
        #print(f"wildcard = {wildcard}")
        ftmps = glob.glob(wildcard)
        #print(f"ftmps = {ftmps}")
        if len(ftmps) == 1:
            # no file found
            # --- Try a suffix detection
            # case : Dypeg brute 60s-001B.fit
            # --- search for the first index where there is a numeric char
            n = len(genename)
            suffix = ""
            sep = ""
            k = 0
            for k in range(n-1,0,-1):
                car = basename[k]
                #print(f"car={car} k={k}")
                if car.isnumeric() == True:
                    break
                suffix = car + suffix
            basename = genename[0:k+1]
            #print(f"1.1 basename = {basename}")
            #print(f"1.1 suffix = {suffix}")
            # --- search for the first index where there is no numeric char
            n = len(basename)
            indice = ""
            sep = ""
            k = 0
            for k in range(n-1,0,-1):
                car = basename[k]
                #print(f"car={car} k={k}")
                if car.isnumeric() == False:
                    sep = basename[k]
                    break
                indice += car
            #print(f"1 k={k} indice={indice}")
            #print(f"1 basename = {basename}")
            if indice == "":
                genename = basename
                sep = ""
            else:
                # --- valid the sepration between genename and indice
                if sep=="-" or sep=="_":
                    genename = basename[0:k]
                else:
                    genename = basename[0:k]
                    sep = ""
            # --- count the number of files corresponding to the genename
            dirname = os.path.dirname(fitsname)
            wildcard = os.path.join(dirname, genename + sep + "*" + suffix + file_extension)
            #print(f"wildcard = {wildcard}")
            ftmps = glob.glob(wildcard)
        indexes = []
        if len(ftmps) > 0:
            k = len(genename+sep)
            #print(f"2 genename+sep = {genename+sep}")
            #print(f"2 k = {k}")
            nsuffix = len(suffix)
            for ftmp in ftmps:
                filename, file_extension = os.path.splitext(ftmp)
                basename = os.path.basename(filename)
                n = len(basename)
                #print(f"2 basename = {basename}")
                indice = basename[k:n-nsuffix]
                if indice == "":
                    continue
                indexes.append([indice, int(indice)])
            indexes = [y[0] for y in sorted(indexes, key = lambda x: x[1])]
        # --- verify if there are leading zeros
        ndigit = 0
        n = len(indexes)
        if n > 0:
            first = indexes[0]
            if first[0] == "0":
                ndigit = len(first)
        genname = {}
        genname["dirname"] = dirname
        genname["genename"] = genename
        genname["sep"] = sep
        genname["indexes"] = indexes
        genname["suffix"] = suffix
        genname["file_extension"] = file_extension
        genname["ndigit"] = ndigit
        # --- process optional parameters
        if len(indexes) > 0:
            first = int(genname["indexes"][0])
            n = int(genname["indexes"][-1])
            if "first" in kwargs.keys():
                bound = first
                first = kwargs["first"]
                if first < 0:
                    first = n + first + 1
                if first > n:
                    first = n
                if first < bound:
                    first = bound
            last = n
            if "last" in kwargs.keys():
                last = kwargs["last"]
                if last < 0:
                    last = n + last + 1
                if last < first:
                    last = first
                if last > n:
                    last = n
            indexes = []
            for index in genname["indexes"]:
                rank = int(index)
                if rank >= first and rank <= last:
                    if "indexes" in kwargs.keys():
                        if rank in kwargs["indexes"]:
                            indexes.append(index)
                    else:
                        indexes.append(index)
            genname["indexes"] = indexes
        # ---
        return genname


    def innames(self, fitsname, **kwargs):
        """Same method as genename()
        """
        return self.genename(fitsname, **kwargs)

    def inoutnames(self, fitsname, outfilename, **kwargs):
        """Generate file names informations to process a series of files.

        This method is the same than innames() but add the output names.

        Args:
            fitsname: Any file name with or without path or extension.
            outfilename: Generic name of the files that must be created later.
            **kwargs: a dictionnary of optional parameters:

                * 'first': Lower index to keep indexes.
                * 'last': Upper index to keep indexes.
                * 'indexes': List of indexes to keep (integers).

        Returns:
            A tupple of three elements.

                * A dictionary containing the following keys:

                    * 'dirname': Path name
                    * 'genename': Generic name of files
                    * 'sep': Separator between generic name and indexes
                    * 'indexes': List of indexes sorted increasing
                    * 'file_extension': File extension
                    * 'ndigit': Number of digits in case of indexes with leading zeros

                * A string that includes the path and the generic shortname.

                * The extension of the outpout files.

        For example, you have 6 files m63-1.fit, m63-2.fit ... m63-6.fit.
        You have to put one of the three file names as input of the method genename
        and if you want to keep only files after the index 4. The generic output file names
        are 'i'.


        ::

            fn = FileNames()
            result = fn.inoutnames("m63-1", "i", first=4)

        result can be ({'dirname': '/tmp', 'genename': 'm63', 'sep': '-', 'indexes': ['5', '6'], 'suffix': '', 'file_extension': '.fit', 'ndigit': 0}, '/tmp/i', '.fit')
        """
        genename = self.innames(fitsname, **kwargs)
        # ---
        outfilename = self.fullfilename(outfilename)
        outfilegene, outfile_extension = os.path.splitext(outfilename)
        return genename, outfilegene, outfile_extension

    def outfilename(self, output=""):
        """Get or set the output file name

        Store the output current filename. Useful for image series or stacking.
        There is no verification if the file exists.

        Args:
            output: Any file name with or without path or extension.

        Returns:
            A string containing the full name of the file (path, shortname, extension).

        ::

            fn = FileNames()
            fullname = fn.outfilename("j1")

        """
        fitsname = output
        if fitsname == "":
            # --- return the current output name
            res = self._outfilename
        else:
            # --- return a simulation of a output name
            genename = self.genename(fitsname)
            outfilename_short = genename["genename"] + genename["file_extension"]
            outfilename = os.path.join( genename["dirname"], outfilename_short)
            res = outfilename
        return res

    def indexname(self, genename_in, outfilegene, outfile_extension, index, k=""):
        """Get input and output file name of one image after using genename().

        Generate input and output full file names.
        Before using this method, use genename() or innames() to generate the genename_in dictionary.
        There is no verification if the output file exists.

        Args:
            genename_in: Dictionary generated using the method genename().
            outfilegene: Generic name (with ou withou path) of the output file
            outfile_extension: Extension of the output file
            index: Index if the intput file. Should be one of the elements of genename_in['indexes'].
            k: Index of the output file. If k is not given, it will be equal to index.

        Returns:
            A tupple of four elements.

                * A string of the short input file name.
                * A string of the short output file name.
                * A string of the full input file name.
                * A string of the full output file name.

        ::

            fn = FileNames()
            fn.path = '/tmp'
            gen = fn.innames("m63-1", first=4)
            shortin, shortout, fullin, fullout = fn.indexname(gen, "/tmp/res/j", gen['indexes'][0], 1)

        The results should be shortin='m63-4.fit', shortout='j1.fit', shortin='/tmp/m63-4.fit', shortout='/tmp/res/j1.fit'
        """
        filename_short = genename_in["genename"] + genename_in["sep"] + str(index) + genename_in["suffix"] + genename_in["file_extension"]
        filename = os.path.join( genename_in["dirname"], filename_short)
        if k=="":
            kstr = str(index)
        else:
            kstr = str(k)
        outgen = self.genename(outfilegene)
        outfname = os.path.join(outgen['dirname'],outgen['genename']) + kstr + outgen['suffix'] + outfile_extension
        basename = os.path.basename(outfname)
        #called_by = inspect.stack()[1][3]
        #print(f"ImaSeries.{called_by} {k}/{n} : {filename_short} -> {basename}")
        return filename_short, basename, filename, outfname

    def indexnames(self, genename_in, outfilegene, outfile_extension, k=""):
        """Get input and output file names of a series of images after using genename().

        Generate input and output full file names.
        Before using this method, use genename() or innames() to generate the genename_in dictionary.
        There is no verification if the output file exists.

        Args:
            genename_in: Dictionary generated using the method genename().
            outfilegene: Generic name (with ou withou path) of the output file
            outfile_extension: Extension of the output file
            k: Index of the first output file. If k is not given, it will be equal to index.

        Returns:
            A tupple of four elements.

                * A list of strings of the full input file name.
                * A list of strings of the full output file name.

        ::

            fn = FileNames()
            fn.path = '/tmp'
            gen = fn.innames("m63-1", first=4)
            shortin, shortout, fullin, fullout = fn.indexnames(gen, "/tmp/res/j", 1)

        The results should be infnames=['/tmp/m63-4.fit','/tmp/m63-5.fit','/tmp/m63-6.fit'] shortout=['/tmp/res/j1.fit', '/tmp/res/j2.fit', '/tmp/res/j3.fit']
        """
        outfnames = []
        infnames = []
        if k!="":
            kk = k
        for index in genename_in["indexes"]:
            filename_short = genename_in["genename"] + genename_in["sep"] + str(index) + genename_in["suffix"] + genename_in["file_extension"]
            filename = os.path.join( genename_in["dirname"], filename_short)
            if k=="":
                kstr = str(index)
            else:
                kstr = str(kk)
                kk += 1
            outgen = self.genename(outfilegene)
            outfname = os.path.join(outgen['dirname'],outgen['genename']) + kstr + outgen['suffix'] + outfile_extension
            infnames.append(filename)
            outfnames.append(outfname)
        #called_by = inspect.stack()[1][3]
        #print(f"ImaSeries.{called_by} {k}/{n} : {filename_short} -> {basename}")
        return infnames, outfnames

    def deletenames(self, fitsname, **kwargs):
        """Delete file names from a series of files.

        This method get the file names using innames().

        Args:
            fitsname: Any file name with or without path or extension.
            **kwargs: a dictionnary of optional parameters:

                * 'first': Lower index to keep indexes.
                * 'last': Upper index to keep indexes.
                * 'indexes': List of indexes to keep (integers).

        Returns:
            List of deleted files.

        ::

            fn = FileNames()
            result = fn.deletenames("m63-1", first=4)

        result can be ({'dirname': '/tmp', 'genename': 'm63', 'sep': '-', 'indexes': ['5', '6'], 'suffix': '', 'file_extension': '.fit', 'ndigit': 0}, '/tmp/j', '.fit')
        """
        fnames = []
        for fname in self.itername(fitsname, **kwargs):
            os.remove(fname)
            fnames.append(fname)
        return fnames

    def _askopenfilename(self, title="", filetypes=""):
        root = tk.Tk()
        root.withdraw() # To avoid display of the Tk window
        initialdir = self.rootdir
        if filetypes == "":
            filetypes = [("FITS",".fit .fits .fts .gz"),("All", "*")]
        fitsname = askopenfilename(title=title, initialdir=initialdir, filetypes = filetypes)
        if fitsname != "":
            filename, file_extension = os.path.splitext(fitsname)
            if file_extension=="":
                fitsname += self._fits_extension
            self.rootdir = os.path.dirname(fitsname)
        root.destroy()
        return fitsname

    def _asksaveasfilename(self, title="", filetypes=""):
        root = tk.Tk()
        root.withdraw() # To avoid display of the Tk window
        initialdir = self.rootdir
        if filetypes == "":
            filetypes = [("FITS",".fit .fits .fts .gz"),("All", "*")]
        fitsname = asksaveasfilename(title=title, initialdir=initialdir, filetypes = filetypes)
        if fitsname != "":
            filename, file_extension = os.path.splitext(fitsname)
            if file_extension=="":
                fitsname += self._fits_extension
            self.rootdir = os.path.dirname(fitsname)
        root.destroy()
        return fitsname

# #####################################################################
# #####################################################################
# #####################################################################
# Main
# #####################################################################
# #####################################################################
# #####################################################################

if __name__ == "__main__":

    default = 21
    example = input(f"Select the example (0 to 21) ({default}) ")
    try:
        example = int(example)
    except:
        example = default
    print("Example       = {}".format(example))

    # --- Get path_images for examples
    fn = FileNames()
    path_products = fn.copy_data2products()

    if example == 0:
        """
        Just one file
        """
        fn = FileNames()
        fn.extension(".fit")
        #fn.path(path_images)
        fs = fn.fullfilename("m57")

    if example == 1:
        """
        """
        fn = FileNames()
        fn.extension(".fit")
        fs = fn.genename("m57")

    if example == 2:
        """
        """
        fn = FileNames()
        fn.path(r"C:\d\grb220427a\night_20220427")
        res = fn.genenames("IM_*.fits.gz")

    if example == 3:
        """
        """
        fn = FileNames()
        fn.naming("PyROS.img.1")
        print(fn.naming_rules())
        param = {}
        param['ftype'] = "L0A"
        param['date'] = "20221109"
        param['time'] = "235406123456"
        param['unit'] = "TNC"
        param['version'] = 1
        param['channel'] = "CH1"
        param['id_seq'] = "0123456789"
        param['plane'] = 1
        param['frame'] = 1
        fname = fn.naming_set(param)
        print(f"fname={fname}")
        param = fn.naming_get(fname)

    if example == 4:
        """
        """
        fn = FileNames()
        for k in range(2, 10, 1):
            fname = f"i{k}.fit"
            print(fname)
            fname = fn.fullfilename(fname)
            with open(fname, "wt") as f:
                pass
        gen, out, outext = fn.inoutnames("i1", 'j', first=3, last=7)
        res = fn.indexname(gen, out, outext, '3', 0)
        ress = fn.indexnames(gen, out, outext, 0)

    if example == 5:
        """
        """
        fn = FileNames()
        fn.pathing("YYYY/MM/DD")
        params = fn.pathing_get("/tmp/2023/01/04")
        fn.longitude = 45.678
        param = {}
        param['date'] = params['date']
        param['night'] = False
        pname = fn.pathing_set(**param)

        #params = fn.pathing_get("/tmp/20230104")

        fn = FileNames()
        fn.pathing("YYYY/YYYYMMDD")
        fn.longitude = 45.678
        param = {}
        param['date'] = "2021-10-26T13:45:23"
        param['night'] = True
        pname = fn.pathing_set(**param)

    if example == 6:
        """
        """
        fn = FileNames()
        fn.pathnaming("PyROS.img.1")
        fn.longitude = 45.678
        date = "2021-10-26T13:45:23"
        fnd = fn.naming_date(date)
        pparam = {}
        pparam['date'] = fnd['iso']
        pparam['night'] = True
        fparam = {}
        fparam['ftype'] = "L0A"
        fparam['date'] = fnd['yyyymmdd']
        fparam['time'] = fnd['hhmmssssssss']
        fparam['version'] = "1"
        fparam['unit'] = "TNC"
        fparam['channel'] = "CH1"
        fparam['id_seq'] = 123456789
        fparam['plane'] = 1
        fparam['frame'] = 1
        fullname = fn.join()
        print(f"fullname={fullname}")

    if example == 7:
        """
        """
        fn = FileNames()
        fn.naming("T1M.1")
        fn.longitude = 45.678
        date = "2021-10-26T13:45:23"
        fnd = fn.naming_date(date)
        fparam = {}
        fparam['date'] = fnd['yyyymmdd']
        fparam['time'] = fnd['hhmmss']
        fparam['millis'] = fnd['millis']
        fparam['target'] = "54UMa"
        fparam['filter'] = "672-SII"
        fparam['binning'] = 1
        fparam['index'] = 1
        fullname = fn.naming_set(fparam)
        print(f"fullname={fullname}")
        param = fn.naming_get(fullname)
        print(f"param={param}")

    if example == 8:
        """
        Get a wildcard to get a glob for a given naming
        """
        fn = FileNames()
        fn.naming("T1M.1")
        fparam = {}
        fparam['target'] = "54UMa"
        wildcard = fn.naming_set(fparam)
        print(f"wildcard={wildcard}")

    if example == 9:
        """
        Get the julian day limits for a given night
        """
        fn = FileNames()
        longitude= -90
        fn.longitude = longitude
        print(f"longitude = {longitude}")
        # --- Define a date of the observation
        date = "2023-03-20T17:00:00"
        print(f"input date = {date}")
        jd = Date(date).jd()
        print(f"input jd = {jd}")
        # --- Compute the night
        night = fn.date2night(date)
        print(f"night={night} (= last local noon truncated)")
        # --- Compute the julian day limits
        jds = fn.night2date(night)
        print(f"jds={jds}")

    if example == 10:
        """
        Get path from name
        """
        fn = FileNames()
        fn.longitude = 45.678
        fn.fcontext = "image_raw"
        fn.pathnaming("PyROS.img.1")
        fn.rootdir = "/tmp"
        in_fullname = r"/srv/work/L0A_20211026_134522999983_1_TNC_CH1_0123456789_001_001.fits.gz"
        path = fn.subdir_from_filename(in_fullname)
        print(f"path={path}")

    if example == 11:
        """
        Set a filename at the current date
        """
        fn = FileNames()
        fn.naming("PyROS.img.1")
        print(fn.naming_rules())
        param = {}
        param['ftype'] = "L0A"
        param['date'] = "now"
        param['unit'] = "TNC"
        param['version'] = 1
        param['channel'] = "CH1"
        param['id_seq'] = "0123456789"
        param['plane'] = 1
        param['frame'] = 1
        fname = fn.naming_set(param)
        print(f"fname={fname}")
        param = fn.naming_get(fname)

    if example == 12:
        """
        Set a filename at the current date
        """
        fn = FileNames()
        fn.naming("PyROS.seq.1")
        print(fn.naming_rules())
        param = {}
        param['period'] = "P001"
        param['date'] = "20230423"
        param['unit'] = "TNC"
        param['version'] = 1
        param['id_seq'] = "0123456789"
        fname = fn.naming_set(param)
        print(f"fname={fname}")
        param = fn.naming_get(fname)

    if example == 13:
        """
        Manage a context
        """
        fn = FileNames()
        fn.fcontext_create("images") # Give a name of a new context
        fn.fcontext = "images" # Select the context name
        fn.rootdir = "/tmp"
        fn.subdir = "2023/03/21"
        fn.fname = "messier63-1"
        fn.extension = ".fits"

    if example == 14:
        """
        Manage many contexts for PyROS
        """
        fn = FileNames()
        fn.longitude = 165.85944

        # --- Create a file context for L0 images
        fn.fcontext_create("pyros_img_L0", "Images L0A")
        fn.fcontext = "pyros_img_L0"
        fn.naming("PyROS.img.1")
        fn.rootdir = "/tmp/img/L0"
        fn.extension = ".fit"

        # --- Create a file context for L1 images
        fn.fcontext_create("pyros_img_L1", "Images L1A")
        fn.fcontext = "pyros_img_L1"
        fn.pathnaming("PyROS.img.1")
        fn.rootdir = "/tmp/img/L1"
        fn.extension = ".fits"

        # --- Create a file context for sequence files
        fn.fcontext_create("pyros_seq", "Sequences PyROS")
        fn.fcontext = "pyros_seq"
        fn.pathnaming("PyROS.seq.1")
        fn.rootdir = "/tmp/seq"
        fn.extension = ".p"

        # --- Place an image at the good place
        fn.fcontext = "pyros_img_L0"
        in_fullname = r"/srv/work/L0A_20211026_194522999983_1_TNC_CH1_0123456789_001_001.fits.gz"
        #fn.update_subdir_fname_from_filename(in_fullname)
        out_fullname = fn.join(in_fullname)
        print(f"==== Copy an image in the good path (context {fn.fcontext_value('description')}) ====")
        print(f"{in_fullname=:}")
        print(f"{out_fullname=:}")

        # --- Place a sequence at the good place
        fn.fcontext = "pyros_seq"
        in_fullname = r"/srv/work/P001_20211026_1_TNC_0123456789.p"
        #fn.update_subdir_fname_from_filename(in_fullname)
        out_fullname = fn.join(in_fullname)
        print(f"\n==== Copy sequence in the good path (context {fn.fcontext_value('description')}) ====")
        print(f"{in_fullname=:}")
        print(f"{out_fullname=:}")

        # --- Save an image from a camera
        fn.fcontext = "pyros_img_L0"
        param = {}
        param['ftype'] = "L0A"
        param['date'] = "now"
        param['unit'] = "TNC"
        param['version'] = 1
        param['channel'] = "CH1"
        param['id_seq'] = 123456789
        param['plane'] = 1
        param['frame'] = 1
        fname = fn.naming_set(param)
        #fn.update_subdir_fname_from_filename(fname)
        out_fullname = fn.join(fname)
        print(f"\n==== Create an image in the good path (context {fn.fcontext_value('description')}) ====")
        print(f"{out_fullname=:}")

        # --- Save an image L1 after image processing
        fn.fcontext = "pyros_img_L0"
        # --- load the L0 file
        param = fn.naming_get(out_fullname)
        # --- save the L1 file
        fn.fcontext = "pyros_img_L1"
        param['ftype'] = "L1A"
        fname = fn.naming_set(param)
        #fn.update_subdir_fname_from_filename(fname)
        out_fullname = fn.joinabs(fname)
        print(f"\n==== Process an image L0 and save in the good path (context {fn.fcontext_value('description')}) ====")
        print(f"{out_fullname=:}")

    if example == 15:
        """
        Manage default context
        """
        fn = FileNames()

        fn.fcontext_create("my_context", "Test")
        fn.fcontext = "my_context"
        fn.rootdir = "/tmp"
        fn.extension = ".fit"

        in_fullname = "/home/myuser/messier63.fits.gz"
        out_fullname = fn.join(in_fullname)
        print(out_fullname)

    if example == 16:
        """
        Create many contexts
        """
        contexts = []
        contexts.append({'context':"sequences", 'description':"Sequence files (.p, .f)", 'rootdir':"/tmp/pyros/sequences", 'pathnaming':"PyROS.seq.1"})
        contexts.append({'context':"img/darks/L0", 'description':"Dark images L0 (individuals)", 'rootdir':"/tmp/pyros/img/darks/l0", 'pathnaming':"PyROS.img.1", 'extension':".fit"})
        contexts.append({'context':"img/darks/L1", 'description':"Dark images L1 (stacks)", 'rootdir':"/tmp/pyros/img/darks/l1", 'pathnaming':"PyROS.img.1", 'extension':".fit"})

        fn = FileNames()

        for context in fn.fcontexts:
            fn.fcontext = context # select the context
            if fn.fcontext == "default":
                continue
            del fn.fcontext

        for context in contexts:

            fn.fcontext_create(context['context'], context['description'])
            fn.fcontext = context['context'] # select the context
            if context.get('rootdir') != None:
                fn.rootdir = context.get('rootdir')
            if context.get('naming') != None:
                fn.naming = context.get('naming')
            if context.get('pathing') != None:
                fn.pathing = context.get('pathing')
            if context.get('pathnaming') != None:
                fn.pathnaming(context.get('pathnaming'))
            if context.get('extension') != None:
                fn.extension = context.get('extension')

        for context in fn.fcontexts:
            fn.fcontext = context # select the context
            if fn.fcontext == "default":
                continue
            print(f"{fn.fcontext} : {fn.fcontext_value('description')}")

    if example == 17:
        """
        Test PyROS sequences
        """
        fn = FileNames()
        # --- Create a file context for sequence files
        fn.fcontext_create("pyros_seq", "Sequences PyROS")
        fn.fcontext = "pyros_seq"
        fn.pathnaming("PyROS.seq.1")
        fn.rootdir = "/tmp/seq"
        fn.extension = ".p"
        param = {}
        param['period'] = "P001"
        param['date'] = "20230628"
        param['unit'] = "TNC"
        param['version'] = 1
        param['id_seq'] = 123456789
        fname = fn.naming_set(param)
        out_fullname = fn.join(fname)
        print(f"\n==== Create a file in the good path (context {fn.fcontext_value('description')}) ====")
        print(f"{out_fullname=:}")

    if example == 18:
        """
        Test PyROS ephemeris
        """
        fn = FileNames()
        # --- Create a file context for ephemeris files
        fn.fcontext_create("pyros_eph", "Ephemeris PyROS")
        fn.fcontext = "pyros_eph"
        fn.pathnaming("PyROS.eph.1")
        fn.rootdir = "/tmp/eph"
        fn.extension = ".f"
        param = {}
        param['period'] = "P001"
        param['date'] = "20230628"
        param['unit'] = "TNC"
        param['version'] = 1
        param['target'] = "sun_yui"
        fname = fn.naming_set(param)
        out_fullname = fn.join(fname)
        print(f"\n==== Create a file in the good path (context {fn.fcontext_value('description')}) ====")
        print(f"{out_fullname=:}")

    if example == 19:
        """
        Test fcontext Indexed.1
        """
        fn = FileNames()
        # --- Create a file context
        fn.fcontext_create("findex", "Files with indexes")
        fn.fcontext = "findex"
        fn.pathnaming("Indexed.1")
        fn.rootdir = "/tmp/eph"
        fn.extension = ".f"
        param = {}
        param['genename'] = "M63-078"
        param['sep'] = "-"
        #param['indexes'] = ['001', '002']
        param['indexes'] = '*'
        param['suffix'] = "R"
        fname = fn.naming_set(param)
        print(f"FINAL {fname=}")
        param = fn.naming_get(fname)
        print(f"FINAL {param=}")
        out_fullname = fn.join(fname)
        print(f"==== Create a file in the good path (context = {fn.fdescription}) ====")
        print(f"{out_fullname=:}")

    if example == 20:
        """
        Test the method _naming_get_indexed1() of fcontext Indexed.1
        """
        fn = FileNames()
        # --- Create a file context
        fn.fcontext_create("findex", "Files with indexes")
        fn.fcontext = "findex"
        fn.pathnaming("Indexed.1")
        #file_in = os.path.join("c:","srv","develop","pyros_soft","pyros","vendor","guitastro","tests","data","m57.fit")
        file_in = "M-57"
        param = fn._naming_get_indexed1(file_in)
        print(f"{param=}")

        gn = FileNames()
        # --- Create a file context
        gn.fcontext_create("gindex", "Files with indexes")

    if example == 21:
        """
        Test the method naming_wildcard of various fcontexts
        """
        fn = FileNames()
        # --- Create a file context
        fn.fcontext_create("pf", "Files with indexes")
        fn.fcontext = "pf"
        fn.pathnaming("PyROS.img.1")
        # ---
        wildcard = fn.naming_wildcard(ftype="L0A", unit="TNC", channel="CH1")
        print(f"{wildcard=}")
        # ---
        in_fullname = r"/srv/work/L1B_20211026_194522999983_1_TNC_CH1_0123456789_001_001.fits.gz"
        wildcard = fn.naming_wildcard(in_fullname, i=True)
        print(f"{wildcard=}")
        # ---
        fn.pathnaming("Indexed.1")
        in_fullname = r"/srv/work/i.fits.gz"
        wildcard = fn.naming_wildcard(in_fullname, i=True)
        print(f"{wildcard=}")