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/* --------------------------------------------------------------------------
MusicBrainz -- The Internet music metadatabase
Copyright (C) 2000 Emusic.com
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$Id: parse.cpp,v 1.6 2000/10/26 14:40:08 robert Exp $
----------------------------------------------------------------------------*/
// The debugger can't handle symbols more than 255 characters long.
// STL often creates symbols longer than that.
// When symbols are longer than 255 characters, the warning is disabled.
#ifdef WIN32
#pragma warning(disable:4786)
#endif
#include <stdio.h>
#include <map>
#include <assert.h>
#include "parse.h"
void BeginElement(void *data, const XML_Char *el, const XML_Char **attr)
{
map<string, string> oMap;
string key, value;
for(; *attr;)
{
if (((MBParse *)data)->UseUTF8())
{
key = string((char *)*(attr++));
value = string((char *)*(attr++));
}
else
{
key = ConvertToISO((char *)*(attr++));
value = ConvertToISO((char *)*(attr++));
}
oMap[key] = value;
}
((MBParse *)data)->BeginElement(string(el), oMap);
}
void EndElement(void *data, const XML_Char *el)
{
if (((MBParse *)data)->UseUTF8())
((MBParse *)data)->EndElement(string(el));
else
((MBParse *)data)->EndElement(ConvertToISO((char *)el));
}
void PCData(void *data, const XML_Char *charData, int len)
{
char *temp;
temp = new char[len + 1];
strncpy(temp, (char *)charData, len);
temp[len] = 0;
if (((MBParse *)data)->UseUTF8())
((MBParse *)data)->PCData(string(temp));
else
((MBParse *)data)->PCData(ConvertToISO((char *)temp));
delete temp;
}
MBParse::MBParse(bool useUTF8)
{
m_useUTF8 = useUTF8;
m_pParser = (XML_Parser *)XML_ParserCreate(NULL);
XML_SetUserData(m_pParser, this);
XML_SetElementHandler(m_pParser, ::BeginElement, ::EndElement);
XML_SetCharacterDataHandler(m_pParser, ::PCData);
}
MBParse::~MBParse(void)
{
XML_ParserFree(m_pParser);
}
Error MBParse::ParseFile(const string &oFile)
{
assert(0);
return kError_NoErr;
}
Error MBParse::ParseString(const string &oXML)
{
return XML_Parse(m_pParser, oXML.c_str(), oXML.length(), 1) ?
kError_NoErr : kError_ParseError;
}
void MBParse::GetErrorString(string &oError)
{
oError = string(XML_ErrorString(XML_GetErrorCode(m_pParser)));
}
int MBParse::GetErrorLine(void)
{
return XML_GetCurrentLineNumber(m_pParser);
}
const string ConvertToISO(const char *utf8)
{
unsigned char *in, *buf;
unsigned char *out, *end;
string ret;
in = (unsigned char *)utf8;
buf = out = new unsigned char[strlen(utf8) + 1];
end = in + strlen(utf8);
for(;*in != 0x00 && in <= end; in++, out++)
{
if (*in < 0x80)
{ /* lower 7-bits unchanged */
*out = *in;
}
else
if (*in > 0xC3)
{ /* discard anything above 0xFF */
*out = '?';
}
else
if (*in & 0xC0)
{ /* parse upper 7-bits */
if (in >= end)
*out = 0;
else
{
*out = (((*in) & 0x1F) << 6) | (0x3F & (*(++in)));
}
}
else
{
*out = '?'; /* this should never happen */
}
}
*out = 0x00; /* append null */
ret = string((char *)buf);
delete buf;
return ret;
}
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