newsearch/ns-match.c

   1 /*
   2  * MATCH functionality
   3  */
   4
   5 #include "newsearch.h"
   6 #include "../lib/irc_string.h"
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10
  11 struct match_localdata {
  12   struct searchNode *targnode;
  13   struct searchNode *patnode;
  14 };
  15
  16 void *match_exe(struct searchNode *thenode, void *theinput);
  17 void match_free(struct searchNode *thenode);
  18
  19 struct searchNode *match_parse(int type, int argc, char **argv) {
  20   struct match_localdata *localdata;
  21   struct searchNode *thenode;
  22   struct searchNode *targnode, *patnode;
  23
  24   if (argc<2) {
  25     parseError="match: usage: match source pattern";
  26     return NULL;
  27   }
  28
  29   targnode = search_parse(type, argv[0]);
  30   if (!(targnode = coerceNode(targnode, RETURNTYPE_STRING)))
  31     return NULL;
  32
  33   patnode = search_parse(type, argv[1]);
  34   if (!(patnode = coerceNode(patnode, RETURNTYPE_STRING))) {
  35     (targnode->free)(targnode);
  36     return NULL;
  37   }
  38
  39   if (!(localdata=(struct match_localdata *)malloc(sizeof (struct match_localdata)))) {
  40     parseError = "malloc: could not allocate memory for this search.";
  41     return NULL;
  42   }
  43
  44   localdata->targnode=targnode;
  45   localdata->patnode=patnode;
  46
  47   if (!(thenode=(struct searchNode *)malloc(sizeof(struct searchNode)))) {
  48     /* couldn't malloc() memory for thenode, so free localdata to avoid leakage */
  49     parseError = "malloc: could not allocate memory for this search.";
  50     free(localdata);
  51     return NULL;
  52   }
  53
  54   thenode->returntype = RETURNTYPE_BOOL;
  55   thenode->localdata = localdata;
  56   thenode->exe = match_exe;
  57   thenode->free = match_free;
  58
  59   return thenode;
  60 }
  61
  62 void *match_exe(struct searchNode *thenode, void *theinput) {
  63   struct match_localdata *localdata;
  64   char *pattern, *target;
  65
  66   localdata = thenode->localdata;
  67
  68   pattern = (char *)(localdata->patnode->exe) (localdata->patnode, theinput);
  69   target  = (char *)(localdata->targnode->exe)(localdata->targnode,theinput);
  70
  71   return (void *)(long)match2strings(pattern, target);
  72 }
  73
  74 void match_free(struct searchNode *thenode) {
  75   struct match_localdata *localdata;
  76
  77   localdata=thenode->localdata;
  78
  79   (localdata->patnode->free)(localdata->patnode);
  80   (localdata->targnode->free)(localdata->targnode);
  81   free(localdata);
  82   free(thenode);
  83 }
  84