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/* M-runtime for c++
* Copyright (C) 2005-2008 Vladimir Menshakov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "xml.h"
#include "fmt.h"
#include "file.h"
using namespace mrt;
#define throw_xml(parser) { \
mrt::XMLException e; \
e.add_message(__FILE__, __LINE__); \
e.add_message("XML error" + parser->getErrorMessage()); throw e; }
XMLException::XMLException() {}
const std::string XMLException::get_custom_message() { return ""; }
XMLException::~XMLException() throw() {}
static void XMLCALL startElement(void *userData, const char *name, const char **attrs) {
XMLParser * p = (XMLParser *)userData;
XMLParser::Attrs attrs_map;
const char ** c =attrs;
while (*c) {
const std::string key = *c++;
if (*c == NULL)
throw_ex(("unpaired attribute (%s)", key.c_str()));
const std::string value = *c++;
attrs_map[key] = value;
}
p->start(name, attrs_map);
}
static void XMLCALL endElement(void *userData, const char *name) {
XMLParser * p = (XMLParser *)userData;
p->end(name);
}
static void XMLCALL startElementStats(void *userData, const char *name, const char **attrs) {}
static void XMLCALL endElementStats(void *userData, const char *name) {
int * pr = (int*) userData;
++ (*pr);
}
static void XMLCALL char_data(void *userData, const XML_Char *s, int len) {
XMLParser * p = (XMLParser *)userData;
p->cdata(std::string(s, len));
}
void XMLParser::get_file_stats(int &tags, const std::string &fname) {
mrt::File f;
f.open(fname, "rt");
get_file_stats(tags, f);
f.close();
}
void XMLParser::get_file_stats(int &tags, const mrt::BaseFile &f) {
XML_Parser parser = NULL;
TRY {
f.seek(0, SEEK_SET);
parser = XML_ParserCreate("UTF-8");
if (parser == NULL)
throw_ex(("cannot create parser"));
tags = 0;
XML_SetUserData(parser, &tags);
XML_SetElementHandler(parser, startElementStats, endElementStats);
bool done;
do {
char buf[16384];
size_t len = f.read(buf, sizeof(buf));
done = len < sizeof(buf);
if (XML_Parse(parser, buf, len, done) == XML_STATUS_ERROR) {
mrt::XMLException e;
std::string error = mrt::format_string("%s at line %d", XML_ErrorString(XML_GetErrorCode(parser)), (int)XML_GetCurrentLineNumber(parser));
e.add_message("XML error: " + error); throw e;
}
} while(!done);
XML_ParserFree(parser);
parser = NULL;
} CATCH("get_file_stats", {
if (parser) {
XML_ParserFree(parser);
}
})
}
void XMLParser::parse_file(const std::string &fname) {
mrt::File f;
f.open(fname, "rt");
parse_file(f);
f.close();
}
void XMLParser::parse_file(const mrt::BaseFile &f) {
f.seek(0, SEEK_SET);
clear();
_parser = XML_ParserCreate("UTF-8");
if (_parser == NULL)
throw_ex(("cannot create parser"));
XML_SetUserData(_parser, this);
XML_SetElementHandler(_parser, startElement, endElement);
XML_SetCharacterDataHandler(_parser, char_data);
bool done;
do {
char buf[16384];
size_t len = f.read(buf, sizeof(buf));
done = len < sizeof(buf);
if (XML_Parse(_parser, buf, len, done) == XML_STATUS_ERROR)
throw_xml(this);
} while(!done);
clear();
}
const std::string XMLParser::getErrorMessage() const {
return mrt::format_string("%s at line %d",
XML_ErrorString(XML_GetErrorCode(_parser)),
(int)XML_GetCurrentLineNumber(_parser));
}
void XMLParser::cdata(const std::string &data) {}
XMLParser::XMLParser() : _parser(0) {}
XMLParser::~XMLParser() {
clear();
}
void XMLParser::clear() {
if (_parser) {
XML_ParserFree(_parser);
_parser = NULL;
}
}
XMLParser::XMLParser(const XMLParser &) : _parser(NULL) {}
const XMLParser& XMLParser::operator=(const XMLParser &) {
clear();
return *this;
}
const std::string XMLParser::escape(const std::string &str) {
std::string result = str;
mrt::replace(result, "&", "&");
mrt::replace(result, "<", "<");
mrt::replace(result, ">", ">");
mrt::replace(result, "\"", """);
mrt::replace(result, "'", "'");
return result;
}
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