newsearch/ns-topic.c

   1 /*
   2  * topic functionality
   3  */
   4
   5 #include "newsearch.h"
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9
  10 void *topic_exe(searchCtx *ctx, struct searchNode *thenode, void *theinput);
  11 void topic_free(searchCtx *ctx, struct searchNode *thenode);
  12
  13 struct searchNode *topic_parse(searchCtx *ctx, int argc, char **argv) {
  14   struct searchNode *thenode;
  15
  16   if (ctx->type != SEARCHTYPE_CHANNEL) {
  17     parseError = "topic: this function is only valid for channel searches.";
  18     return NULL;
  19   }
  20
  21   if (!(thenode=(struct searchNode *)malloc(sizeof(struct searchNode)))) {
  22     /* couldn't malloc() memory for thenode, so free localdata to avoid leakage */
  23     parseError = "malloc: could not allocate memory for this search.";
  24     return NULL;
  25   }
  26
  27   thenode->returntype = RETURNTYPE_STRING;
  28   thenode->localdata = NULL;
  29   thenode->exe = topic_exe;
  30   thenode->free = topic_free;
  31
  32   return thenode;
  33 }
  34
  35 void *topic_exe(searchCtx *ctx, struct searchNode *thenode, void *theinput) {
  36   chanindex *cip = (chanindex *)theinput;
  37
  38   if ((cip->channel==NULL) || (cip->channel->topic==NULL))
  39     return "";
  40   else
  41     return cip->channel->topic->content;
  42 }
  43
  44 void topic_free(searchCtx *ctx, struct searchNode *thenode) {
  45   free(thenode);
  46 }
  47