XMLReader.cc
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/*
* XMLReader.cc
*
* Created on: 7 août 2013
* Author: CS
*/
#include "XMLReader.hh"
#include <boost/algorithm/string.hpp>
namespace TimeTableCatalog {
XMLReader::XMLReader(const std::string& pPath) :
AbstractReader(pPath), _tmpIntervalstartdate(0), _step(READ_STEP::NO_TAG) {
}
XMLReader::~XMLReader() {
}
// ----------------- PUBLIC --------------------------
void XMLReader::read(TimeTable& pTT) {
/*
* this initialize the library and check potential ABI mismatches
* between the version it was compiled for and the actual shared
* library used.
*/LIBXML_TEST_VERSION
// -- parse xml file and process nodes
parse(pTT);
// -- cleanup function for the XML library.
xmlCleanupParser();
}
bool XMLReader::canRead(const std::string& pPath) {
std::string tmpPath(pPath);
std::transform(tmpPath.begin(), tmpPath.end(), tmpPath.begin(), ::tolower);
if(!boost::algorithm::ends_with(tmpPath, ".xml")){
return false;
}
/*
* this initialize the library and check potential ABI mismatches
* between the version it was compiled for and the actual shared
* library used.
*/LIBXML_TEST_VERSION
std::string localPath = TimeTable::download(pPath);
// -- parse xml file and process nodes
bool found = containsNode(localPath, getFirstNode());
// -- cleanup function for the XML library.
xmlCleanupParser();
return found;
}
// ----------------- PROTECTED --------------------------
/**
* Parses and processes XML file denoted by _path.
*/
void XMLReader::parse(TimeTable& pTT) {
xmlTextReaderPtr reader;
// created XML reader
reader = xmlReaderForFile(getLocalPath().c_str(), NULL, 0);
_step = READ_STEP::NO_TAG;
if (reader != NULL) {
// read xml file tag by tag
int crtIndex = 0;
int ret = xmlTextReaderRead(reader);
while (ret == 1) {
processNode(pTT, reader, crtIndex);
ret = xmlTextReaderRead(reader);
}
xmlFreeTextReader(reader);
if (ret != 0) {
LOG4CXX_WARN(_logger, "Failed to parse " + getPath());
}
} else {
LOG4CXX_WARN(_logger, "Unable to open " + getPath());
}
}
/**
* Parses and search for a given node in XML file denoted by _path.
*/
bool XMLReader::containsNode(const std::string& pPath, std::string pNodeName,
int pMaxTagToRead) {
xmlTextReaderPtr reader;
// created XML reader
reader = xmlReaderForFile(pPath.c_str(), NULL, 0);
if (reader != NULL) {
// read xml file tag by tag
int ret = xmlTextReaderRead(reader);
bool found = false;
int i = 0;
while (ret == 1 && !found && i < pMaxTagToRead) {
found = containsNode(reader, pNodeName);
ret = xmlTextReaderRead(reader);
++i;
}
xmlFreeTextReader(reader);
if (!found && i < pMaxTagToRead && ret != 0) {
LOG4CXX_WARN(_logger, "Failed to parse " + pPath);
}
return found;
} else {
LOG4CXX_WARN(_logger, "Unable to open " + pPath);
}
return false;
}
bool XMLReader::containsNode(xmlTextReaderPtr reader,
std::string& pNodeName) {
const xmlChar *name;
// -- read tag
name = xmlTextReaderConstName(reader);
if (name == NULL)
name = BAD_CAST "--";
// get tag name to easily handle it
std::string tagName = reinterpret_cast<const char*>(name);
if (tagName == pNodeName) {
return true;
}
return false;
}
} /* namespace TimeTableCatalog */