strutil.c

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/*----------------------------------------------------------------------------
 secwatch - Copyright (C) 2006 Nic Stevens -- See COPYING for license details
------------------------------------------------------------------------------
  strutil.c -- string utility functions.
  These functions provide some higher-level string functions useful in dealing
  with text files.
-----------------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

char ** split(char *sep, char *string) {
     char **array = NULL;
     int ap, cnt = 0;
     char *p, *s;
     
     if((s = strdup(string)) == NULL)
          return NULL;
     
     p = strtok(s,sep);

     while(p != NULL) {
          ap = cnt++;
          if((array = realloc(array,((sizeof(char *))*cnt+1))) == NULL) {
               free(s);
               return NULL;
          }
          array[ap] = p;
          array[cnt] = NULL;
          p = strtok(NULL,sep);
     }
     return array;
}

char *ltrim(char *s) {
     char *p = s;
     if(s == NULL || *s == '\0')
          return s;
     while(isspace(*p))
          p++;
     return p;
}
char *rtrim(char *s) {
     char *p;
     if(s == NULL || *s == '\0')
          return s;
     p = s;
     p = ((char *)&s[strlen(s)-1]);
     while(isspace(*p))
          p--;
     *++p = '\0';
     return s;
}
char *trim(char *s) {
     return rtrim(ltrim(s));
}
int count(char **a) {
     int i;
     for(i = 0; a[i] != NULL; i++)
          ;
     return i;
}
int strpos(char *haystack, char *needle) {
     int i;
     int nlen = strlen(needle);
     for(i = 0; i < strlen(haystack); i++) 
          if(strncmp(&haystack[i],needle,nlen) == 0)
               return i;
     return -1;
}

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