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/* --------------------------------------------------------------------------
MusicBrainz -- The Internet music metadatabase
Copyright (C) 2000 Robert Kaye
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: xql.cpp,v 1.8 2001/03/05 22:19:03 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 "xql.h"
XQL::XQL(bool useUTF8) :
MBParse(useUTF8)
{
}
XQL::~XQL(void)
{
}
Error XQL::BeginElement(const string &oElement, AttrMap &oAttrMap)
{
map<string, string>::iterator i;
int j;
string oKey;
char szIndex[100];
m_oPath += string("/") + oElement;
if (m_oNodeHist.find(m_oPath) == m_oNodeHist.end())
m_oNodeHist[m_oPath] = 0;
else
{
j = m_oNodeHist[m_oPath] + 1;
m_oNodeHist[m_oPath] = j;
sprintf(szIndex, "[%d]", j);
m_oPath += string(szIndex);
}
for(i = oAttrMap.begin(); i != oAttrMap.end(); i++)
{
oKey = m_oPath + string("/@") + (*i).first;
m_oList[oKey] = (*i).second;
//printf("parse: %s ==> '%s'\n", oKey.c_str(), (*i).second.c_str());
}
return kError_NoErr;
}
Error XQL::EndElement(const string &oElement)
{
const char *pPtr;
int iOffset;
pPtr = strrchr(m_oPath.c_str(), '/');
if (pPtr == NULL)
return kError_NoErr;
iOffset = pPtr - m_oPath.c_str();
m_oPath.erase(iOffset, m_oPath.length() - iOffset);
return kError_NoErr;
}
Error XQL::PCData(const string &oData)
{
//printf("parse: %s ==> '%s'\n", m_oPath.c_str(), oData.c_str());
m_oList[m_oPath] += oData;
return kError_NoErr;
}
const string &XQL::Query(const string &oKeyArg)
{
string::size_type pos;
string oKey = oKeyArg;
for(;;)
{
pos = oKey.find("[0]", 0);
if (pos == string::npos)
break;
oKey.erase(pos, 3);
}
if (m_oList.find(oKey) == m_oList.end())
{
return m_oEmpty;
}
//printf("rq: '%s' => '%s'\n", oKeyArg.c_str(), m_oList[oKey].c_str());
return m_oList[oKey];
}
#if 0
static char *query1 = "/TrackInfo/GeneralInfo/Title";
static char *query2 = "/TrackInfo/GeneralInfo/Artist/@ID";
static char *query3 = "/TrackInfo/ExtendedInfo/Lyrics/SyncLyrics/LyricEvent[]/Text";
static char *query4 = "/TrackInfo/ExtendedInfo/Lyrics/SyncLyrics/LyricEvent[]";
int main(void)
{
XQL oList;
string oValue;
Error eRet;
eRet = oList.ParseFile(string("tsample.xml"));
if (eRet != kError_NoErr)
{
string oErr;
oList.GetErrorString(oErr);
printf("Parse error: %s\n", oErr.c_str());
return 0;
}
printf("Query: %s ==> '%s'\n", query1,
oList.Query(string(query1), 0).c_str());
printf("Query: %s ==> '%s'\n", query2,
oList.Query(string(query2), 0).c_str());
printf("Query: %s ==> '%s'\n", query3,
oList.Query(string(query3), 2).c_str());
printf("Query: %s ==> '%s'\n", query4,
oList.Query(string(query4), 3).c_str());
return 0;
}
#endif
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