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, int type, 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   if (!(targnode = search_parse(type, argv[0])))
  30     return NULL;
  31
  32   if (!(patnode = search_parse(type, argv[1]))) {
  33     (targnode->free)(targnode);
  34     return NULL;
  35   }
  36
  37   if (!(localdata=(struct match_localdata *)malloc(sizeof (struct match_localdata)))) {
  38     parseError = "malloc: could not allocate memory for this search.";
  39     return NULL;
  40   }
  41
  42   localdata->targnode=targnode;
  43   localdata->patnode=patnode;
  44
  45   if (!(thenode=(struct searchNode *)malloc(sizeof(struct searchNode)))) {
  46     /* couldn't malloc() memory for thenode, so free localdata to avoid leakage */
  47     parseError = "malloc: could not allocate memory for this search.";
  48     free(localdata);
  49     return NULL;
  50   }
  51
  52   thenode->returntype = RETURNTYPE_BOOL;
  53   thenode->localdata = localdata;
  54   thenode->exe = match_exe;
  55   thenode->free = match_free;
  56
  57   return thenode;
  58 }
  59
  60 void *match_exe(struct searchNode *thenode, int type, void *theinput) {
  61   struct match_localdata *localdata;
  62   char *pattern, *target;
  63   int ret;
  64
  65   localdata = thenode->localdata;
  66
  67   pattern = (char *)(localdata->patnode->exe) (localdata->patnode, RETURNTYPE_STRING, theinput);
  68   target  = (char *)(localdata->targnode->exe)(localdata->targnode,RETURNTYPE_STRING, theinput);
  69
  70   ret = match2strings(pattern, target);
  71
  72   switch(type) {
  73   default:
  74   case RETURNTYPE_INT:
  75   case RETURNTYPE_BOOL:
  76     return (void *)((long)ret);
  77
  78   case RETURNTYPE_STRING:
  79     return (ret ? "1" : "");
  80   }
  81 }
  82
  83 void match_free(struct searchNode *thenode) {
  84   struct match_localdata *localdata;
  85
  86   localdata=thenode->localdata;
  87
  88   (localdata->patnode->free)(localdata->patnode);
  89   (localdata->targnode->free)(localdata->targnode);
  90   free(localdata);
  91   free(thenode);
  92 }
  93