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capela |
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// parser.c |
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// |
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/**************************************************************************** |
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liblscp - LinuxSampler Control Protocol API |
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Copyright (C) 2004, rncbc aka Rui Nuno Capela. All rights reserved. |
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with this library; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*****************************************************************************/ |
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#include "parser.h" |
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// Case unsensitive comparison substitutes. |
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#if defined(WIN32) |
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#define strcasecmp stricmp |
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#define strncasecmp strnicmp |
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#endif |
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//------------------------------------------------------------------------- |
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// Simple token parser. |
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const char *lscp_parser_strtok ( char *pchBuffer, const char *pszDelim, char **ppch ) |
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{ |
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const char *pszToken; |
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if (pchBuffer == NULL) |
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pchBuffer = *ppch; |
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pchBuffer += strspn(pchBuffer, pszDelim); |
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if (*pchBuffer == '\0') |
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return NULL; |
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pszToken = pchBuffer; |
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pchBuffer = strpbrk(pszToken, pszDelim); |
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if (pchBuffer == NULL) { |
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*ppch = strchr(pszToken, '\0'); |
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} else { |
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*pchBuffer = '\0'; |
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*ppch = pchBuffer + 1; |
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while (strchr(pszDelim, **ppch)) |
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(*ppch)++; |
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} |
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return pszToken; |
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} |
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void lscp_parser_init ( lscp_parser_t *pParser, const char *pchBuffer, int cchBuffer ) |
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{ |
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memset(pParser, 0, sizeof(lscp_parser_t)); |
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pParser->pchBuffer = (char *) malloc(cchBuffer + 1); |
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if (pParser->pchBuffer) { |
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memcpy(pParser->pchBuffer, pchBuffer, cchBuffer); |
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pParser->pchBuffer[cchBuffer] = (char) 0; |
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pParser->pszToken = lscp_parser_strtok(pParser->pchBuffer, " \t\r\n", &(pParser->pch)); |
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} |
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} |
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const char *lscp_parser_next ( lscp_parser_t *pParser ) |
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{ |
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const char *pszToken = pParser->pszToken; |
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if (pParser->pszToken) |
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pParser->pszToken = lscp_parser_strtok(NULL, " \t\r\n", &(pParser->pch)); |
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return pszToken; |
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} |
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int lscp_parser_nextint ( lscp_parser_t *pParser ) |
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{ |
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int ret = 0; |
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if (pParser->pszToken) { |
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ret = atoi(pParser->pszToken); |
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lscp_parser_next(pParser); |
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} |
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return ret; |
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} |
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float lscp_parser_nextnum ( lscp_parser_t *pParser ) |
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{ |
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float ret = 0; |
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if (pParser->pszToken) { |
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ret = (float) atof(pParser->pszToken); |
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lscp_parser_next(pParser); |
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} |
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return ret; |
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} |
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int lscp_parser_test ( lscp_parser_t *pParser, const char *pszToken ) |
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{ |
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int ret = (pParser->pszToken != NULL); |
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if (ret) |
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ret = (strcasecmp(pParser->pszToken, pszToken) == 0); |
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if (ret) |
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lscp_parser_next(pParser); |
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return ret; |
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} |
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int lscp_parser_test2 ( lscp_parser_t *pParser, const char *pszToken, const char *pszToken2 ) |
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{ |
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int ret = lscp_parser_test(pParser, pszToken); |
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if (ret) |
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ret = lscp_parser_test(pParser, pszToken2); |
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return ret; |
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} |
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void lscp_parser_free ( lscp_parser_t *pParser ) |
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{ |
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if (pParser->pchBuffer) |
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free(pParser->pchBuffer); |
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pParser->pchBuffer = NULL; |
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} |
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// end of parser.c |
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