/[svn]/liblscp/trunk/src/common.c

Diff of /liblscp/trunk/src/common.c

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-revision 132 by capela,
Fri Jun 18 14:19:19 2004 UTC
+revision 163 by capela,
Wed Jun 30 15:16:03 2004 UTC
 Line 1
- // client.c
+ // common.c
  //
  /****************************************************************************
     liblscp - LinuxSampler Control Protocol API
 Line 25
  #include <ctype.h>
- // Chunk size magic:
+ // Split chunk size magic:
- // LSCP_SPLIT_CHUNK1 = 2 ^ LSCP_SPLIT_CHUNK2
+ // LSCP_SPLIT_CHUNK1 := 2 ^ LSCP_SPLIT_CHUNK2
  #define LSCP_SPLIT_CHUNK1   4
  #define LSCP_SPLIT_CHUNK2   2
  // Chunk size legal calculator.
 Line 419 
 int lscp_isplit_size ( int *piSplit )
  #endif // LSCP_ISPLIT_COUNT
+ // Split a string into a null terminated array of parameter items.
+ lscp_param_t *lscp_psplit_create ( const char *pszCsv, const char *pszSeps1, const char *pszSeps2 )
+ {
+     char *pszHead, *pch;
+     int iSize, i, j, cchSeps1, cchSeps2;
+     lscp_param_t *ppSplit, *ppNewSplit;
+     pszHead = strdup(pszCsv);
+     if (pszHead == NULL)
+         return NULL;
+     iSize = LSCP_SPLIT_CHUNK1;
+     ppSplit = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t));
+     if (ppSplit == NULL) {
+         free(pszHead);
+         return NULL;
+     }
+     cchSeps1 = strlen(pszSeps1);
+     cchSeps2 = strlen(pszSeps2);
+     i = 0;
+     while ((pch = strpbrk(pszHead, pszSeps1)) != NULL) {
+         ppSplit[i].key = pszHead;
+         pszHead = pch + cchSeps1;
+         *pch = (char) 0;
+         ppSplit[i].value = lscp_unquote(&pszHead, 0);
+         if ((pch = strpbrk(pszHead, pszSeps2)) != NULL) {
+             pszHead = pch + cchSeps2;
+             *pch = (char) 0;
+         }
+         if (++i >= iSize) {
+             iSize += LSCP_SPLIT_CHUNK1;
+             ppNewSplit = (lscp_param_t *) malloc(iSize * sizeof(lscp_param_t));
+             if (ppNewSplit) {
+                 for (j = 0; j < i; j++) {
+                     ppNewSplit[j].key   = ppSplit[j].key;
+                     ppNewSplit[j].value = ppSplit[j].value;
+                 }
+                 free(ppSplit);
+                 ppSplit = ppNewSplit;
+             }
+         }
+     }
+     if (i < 1)
+         free(pszHead);
+     for ( ; i < iSize; i++) {
+         ppSplit[i].key   = NULL;
+         ppSplit[i].value = NULL;
+     }
+     return ppSplit;
+ }
+ // Destroy a parameter list array.
+ void lscp_psplit_destroy ( lscp_param_t *ppSplit )
+ {
+     if (ppSplit && ppSplit[0].key)
+         free(ppSplit[0].key);
+     if (ppSplit)
+         free(ppSplit);
+ }
+ #ifdef LSCP_PSPLIT_COUNT
+ // Compute a parameter list valid item count.
+ int lscp_psplit_count ( lscp_param_t *ppSplit )
+ {
+     int i = 0;
+     while (ppSplit && ppSplit[i].key)
+         i++;
+     return i;
+ }
+ // Compute a parameter list size.
+ int lscp_psplit_size ( lscp_param_t *ppSplit )
+ {
+     return LSCP_SPLIT_SIZE(lscp_psplit_count(ppSplit));
+ }
+ #endif // LSCP_PSPLIT_COUNT
  //-------------------------------------------------------------------------
  // Engine info struct helper functions.
-Line 492 
 void lscp_driver_info_reset ( lscp_drive
+Line 579 
 void lscp_driver_info_reset ( lscp_drive
  }
+ //-------------------------------------------------------------------------
+ // Parameter struct helper functions.
+ void lscp_param_info_init ( lscp_param_info_t *pParamInfo )
+ {
+     pParamInfo->type          = LSCP_TYPE_NONE;
+     pParamInfo->description   = NULL;
+     pParamInfo->mandatory     = 0;
+     pParamInfo->fix           = 0;
+     pParamInfo->multiplicity  = 0;
+     pParamInfo->depends       = NULL;
+     pParamInfo->defaultv      = NULL;
+     pParamInfo->range_min     = NULL;
+     pParamInfo->range_max     = NULL;
+     pParamInfo->possibilities = NULL;
+ }
+ void lscp_param_info_reset ( lscp_param_info_t *pParamInfo )
+ {
+     if (pParamInfo->description)
+         free(pParamInfo->description);
+     lscp_szsplit_destroy(pParamInfo->depends);
+     if (pParamInfo->defaultv)
+         free(pParamInfo->defaultv);
+     if (pParamInfo->range_min)
+         free(pParamInfo->range_min);
+     if (pParamInfo->range_max)
+         free(pParamInfo->range_max);
+     lscp_szsplit_destroy(pParamInfo->possibilities);
+     lscp_param_info_init(pParamInfo);
+ }
+ //-------------------------------------------------------------------------
+ // Concatenate a parameter list (key='value'...) into a string.
+ int lscp_param_concat ( char *pszBuffer, int cchMaxBuffer, lscp_param_t *pParams )
+ {
+     int cchBuffer, cchParam, i;
+     if (pszBuffer == NULL || pParams == NULL)
+         return 0;
+     cchBuffer = strlen(pszBuffer);
+     for (i = 0; pParams[i].key && pParams[i].value; i++) {
+         cchParam = strlen(pParams[i].key) + strlen(pParams[i].value) + 4;
+         if (cchBuffer + cchParam < cchMaxBuffer) {
+             sprintf(pszBuffer + cchBuffer, " %s='%s'", pParams[i].key, pParams[i].value);
+             cchBuffer += cchParam;
+         }
+     }
+     return cchBuffer;
+ }
  // end of common.c

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