Function processMetadata

maptemplate.c:2285–2343

! * this function process all metadata * in pszInstr. ht mus contain all corresponding * metadata value. * * this function return a modified pszInstr */

 * this function return a modified pszInstr
*/
int processMetadata(char** pszInstr, hashTableObj *ht)
{
/* char *pszNextInstr = pszInstr; */
   char *pszEnd, *pszStart;
   char *pszMetadataTag;
   char *pszHashName;
   char *pszHashValue;
   int nLength, nOffset;

   hashTableObj *metadataArgs = NULL;

   if(!*pszInstr) {
     msSetError(MS_WEBERR, "Invalid pointer.", "processMetadata()");
     return MS_FAILURE;
   }

   /* set position to the begining of metadata tag */
   pszStart = findTag(*pszInstr, "metadata");

   while (pszStart) {
      /* get metadata args */
      if(getTagArgs("metadata", pszStart, &metadataArgs) != MS_SUCCESS)
        return MS_FAILURE;

      pszHashName = msLookupHashTable(metadataArgs, "name");
      pszHashValue = msLookupHashTable(ht, pszHashName);
      
      nOffset = pszStart - *pszInstr;

      if(pszHashName && pszHashValue) {
           /* set position to the end of metadata start tag */
           pszEnd = strchr(pszStart, ']');
           pszEnd++;

           /* build the complete metadata tag ([metadata all_args]) */
           /* to replace it by the corresponding value from ht */
           nLength = pszEnd - pszStart;
           pszMetadataTag = (char*)msSmallMalloc(nLength + 1);
           strlcpy(pszMetadataTag, pszStart, nLength+1);

           *pszInstr = msReplaceSubstring(*pszInstr, pszMetadataTag, pszHashValue);

           free(pszMetadataTag);
           pszMetadataTag=NULL;
      }

      msFreeHashTable(metadataArgs);
      metadataArgs=NULL;


      /* set position to the begining of the next metadata tag */
      if((*pszInstr)[nOffset] != '\0')
        pszStart = findTag(*pszInstr+nOffset+1, "metadata");
      else
        pszStart = NULL;
   }

   return MS_SUCCESS;