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(searchCtx *ctx, struct searchNode *thenode, void *theinput);
  17 void match_free(searchCtx *ctx, struct searchNode *thenode);
  18
  19 struct searchNode *match_parse(searchCtx *ctx, 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   /* @fixme check this works with new parsing semantics */
  30   targnode = ctx->parser(ctx, argv[0]);
  31   if (!(targnode = coerceNode(ctx,targnode, RETURNTYPE_STRING)))
  32     return NULL;
  33
  34   patnode = ctx->parser(ctx, argv[1]);
  35   if (!(patnode = coerceNode(ctx,patnode, RETURNTYPE_STRING))) {
  36     (targnode->free)(ctx, targnode);
  37     return NULL;
  38   }
  39
  40   if (!(localdata=(struct match_localdata *)malloc(sizeof (struct match_localdata)))) {
  41     parseError = "malloc: could not allocate memory for this search.";
  42     (targnode->free)(ctx, targnode);
  43     (patnode->free)(ctx, patnode);
  44     return NULL;
  45   }
  46
  47   localdata->targnode=targnode;
  48   localdata->patnode=patnode;
  49
  50   if (!(thenode=(struct searchNode *)malloc(sizeof(struct searchNode)))) {
  51     /* couldn't malloc() memory for thenode, so free localdata to avoid leakage */
  52     parseError = "malloc: could not allocate memory for this search.";
  53     (targnode->free)(ctx, targnode);
  54     (patnode->free)(ctx, patnode);
  55     free(localdata);
  56     return NULL;
  57   }
  58
  59   thenode->returntype = RETURNTYPE_BOOL;
  60   thenode->localdata = localdata;
  61   thenode->exe = match_exe;
  62   thenode->free = match_free;
  63
  64   return thenode;
  65 }
  66
  67 void *match_exe(searchCtx *ctx, struct searchNode *thenode, void *theinput) {
  68   struct match_localdata *localdata;
  69   char *pattern, *target;
  70
  71   localdata = thenode->localdata;
  72
  73   pattern = (char *)(localdata->patnode->exe) (ctx, localdata->patnode, theinput);
  74   target  = (char *)(localdata->targnode->exe)(ctx, localdata->targnode,theinput);
  75
  76   return (void *)(long)match2strings(pattern, target);
  77 }
  78
  79 void match_free(searchCtx *ctx, struct searchNode *thenode) {
  80   struct match_localdata *localdata;
  81
  82   localdata=thenode->localdata;
  83
  84   (localdata->patnode->free)(ctx, localdata->patnode);
  85   (localdata->targnode->free)(ctx, localdata->targnode);
  86   free(localdata);
  87   free(thenode);
  88 }
  89