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// parser.c
//
/****************************************************************************
liblscp - LinuxSampler Control Protocol API
Copyright (C) 2004, rncbc aka Rui Nuno Capela. All rights reserved.
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
*****************************************************************************/
#include "parser.h"
// Case unsensitive comparison substitutes.
#if defined(WIN32)
#define strcasecmp stricmp
#define strncasecmp strnicmp
#endif
//-------------------------------------------------------------------------
// Simple token parser.
const char *lscp_parser_strtok ( char *pchBuffer, const char *pszDelim, char **ppch )
{
const char *pszToken;
if (pchBuffer == NULL)
pchBuffer = *ppch;
pchBuffer += strspn(pchBuffer, pszDelim);
if (*pchBuffer == '\0')
return NULL;
pszToken = pchBuffer;
pchBuffer = strpbrk(pszToken, pszDelim);
if (pchBuffer == NULL) {
*ppch = strchr(pszToken, '\0');
} else {
*pchBuffer = '\0';
*ppch = pchBuffer + 1;
while (strchr(pszDelim, **ppch))
(*ppch)++;
}
return pszToken;
}
void lscp_parser_init ( lscp_parser_t *pParser, const char *pchBuffer, int cchBuffer )
{
memset(pParser, 0, sizeof(lscp_parser_t));
pParser->pchBuffer = (char *) malloc(cchBuffer + 1);
if (pParser->pchBuffer) {
memcpy(pParser->pchBuffer, pchBuffer, cchBuffer);
pParser->pchBuffer[cchBuffer] = (char) 0;
pParser->pszToken = lscp_parser_strtok(pParser->pchBuffer, " \t\r\n", &(pParser->pch));
}
}
const char *lscp_parser_next ( lscp_parser_t *pParser )
{
const char *pszToken = pParser->pszToken;
if (pParser->pszToken)
pParser->pszToken = lscp_parser_strtok(NULL, " \t\r\n", &(pParser->pch));
return pszToken;
}
int lscp_parser_nextint ( lscp_parser_t *pParser )
{
int ret = 0;
if (pParser->pszToken) {
ret = atoi(pParser->pszToken);
lscp_parser_next(pParser);
}
return ret;
}
float lscp_parser_nextnum ( lscp_parser_t *pParser )
{
float ret = 0;
if (pParser->pszToken) {
ret = (float) atof(pParser->pszToken);
lscp_parser_next(pParser);
}
return ret;
}
int lscp_parser_test ( lscp_parser_t *pParser, const char *pszToken )
{
int ret = (pParser->pszToken != NULL);
if (ret)
ret = (strcasecmp(pParser->pszToken, pszToken) == 0);
if (ret)
lscp_parser_next(pParser);
return ret;
}
int lscp_parser_test2 ( lscp_parser_t *pParser, const char *pszToken, const char *pszToken2 )
{
int ret = lscp_parser_test(pParser, pszToken);
if (ret)
ret = lscp_parser_test(pParser, pszToken2);
return ret;
}
void lscp_parser_free ( lscp_parser_t *pParser )
{
if (pParser->pchBuffer)
free(pParser->pchBuffer);
pParser->pchBuffer = NULL;
}
// end of parser.c
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