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 (!(thenode=(struct searchNode *)malloc(sizeof(struct searchNode)))) {
  17     /* couldn't malloc() memory for thenode, so free localdata to avoid leakage */
  18     parseError = "malloc: could not allocate memory for this search.";
  19     return NULL;
  20   }
  21
  22   thenode->returntype = RETURNTYPE_STRING;
  23   thenode->localdata = NULL;
  24   thenode->exe = topic_exe;
  25   thenode->free = topic_free;
  26
  27   return thenode;
  28 }
  29
  30 void *topic_exe(searchCtx *ctx, struct searchNode *thenode, void *theinput) {
  31   chanindex *cip = (chanindex *)theinput;
  32
  33   if ((cip->channel==NULL) || (cip->channel->topic==NULL))
  34     return "";
  35   else
  36     return cip->channel->topic->content;
  37 }
  38
  39 void topic_free(searchCtx *ctx, struct searchNode *thenode) {
  40   free(thenode);
  41 }
  42