newsearch/ns-length.c

   1 /*
   2  * length functionality - returns the length of a string
   3  */
   4
   5 #include "newsearch.h"
   6
   7 #include "../lib/irc_string.h"
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11
  12 void length_free(struct searchNode *thenode);
  13 void *length_exe(struct searchNode *thenode, void *theinput);
  14
  15 struct searchNode *length_parse(int type, int argc, char **argv) {
  16   struct searchNode *thenode, *childnode;
  17
  18   if (!(thenode = (struct searchNode *)malloc(sizeof(struct searchNode)))) {
  19     parseError = "malloc: could not allocate memory for this search.";
  20     return NULL;
  21   }
  22
  23   thenode->localdata  = NULL;
  24   thenode->returntype = RETURNTYPE_INT;
  25   thenode->exe  = length_exe;
  26   thenode->free = length_free;
  27
  28   if (argc != 1) {
  29     parseError = "length: usage: length <string>";
  30     free(thenode);
  31     return NULL;
  32   }
  33
  34   childnode = search_parse(type, argv[0]);
  35   if (!(thenode->localdata = coerceNode(childnode, RETURNTYPE_STRING))) {
  36     length_free(thenode);
  37     return NULL;
  38   }
  39
  40   return thenode;
  41 }
  42
  43 void length_free(struct searchNode *thenode) {
  44   struct searchNode *anode;
  45
  46   if ((anode=thenode->localdata))
  47     (anode->free)(anode);
  48
  49   free(thenode);
  50 }
  51
  52 void *length_exe(struct searchNode *thenode, void *theinput) {
  53   char *strval;
  54   struct searchNode *anode=thenode->localdata;
  55
  56   strval=(char *)(anode->exe)(anode, theinput);
  57
  58   return (void *)strlen(strval);
  59 }