1 const char ssplit_rcs[] = "$Id: ssplit.c,v 1.14 2012/06/08 15:15:11 fabiankeil Exp $";
2 /*********************************************************************
4 * File : $Source: /cvsroot/ijbswa/current/ssplit.c,v $
6 * Purpose : A function to split a string at specified delimiters.
8 * Copyright : Written by and Copyright (C) 2001 the SourceForge
9 * Privoxy team. http://www.privoxy.org/
11 * Based on the Internet Junkbuster originally written
12 * by and Copyright (C) 1997 Anonymous Coders and
13 * Junkbusters Corporation. http://www.junkbusters.com
15 * This program is free software; you can redistribute it
16 * and/or modify it under the terms of the GNU General
17 * Public License as published by the Free Software
18 * Foundation; either version 2 of the License, or (at
19 * your option) any later version.
21 * This program is distributed in the hope that it will
22 * be useful, but WITHOUT ANY WARRANTY; without even the
23 * implied warranty of MERCHANTABILITY or FITNESS FOR A
24 * PARTICULAR PURPOSE. See the GNU General Public
25 * License for more details.
27 * The GNU General Public License should be included with
28 * this file. If not, you can view it at
29 * http://www.gnu.org/copyleft/gpl.html
30 * or write to the Free Software Foundation, Inc., 59
31 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
33 *********************************************************************/
44 const char ssplit_h_rcs[] = SSPLIT_H_VERSION;
47 /*********************************************************************
51 * Description : Split a string using delimiters in `delim'. Results
55 * 1 : str = string to split. Will be split in place
56 * (i.e. do not free until you've finished with vec,
57 * previous contents will be trashed by the call).
58 * 2 : delim = array of delimiters (if NULL, uses " \t").
59 * 3 : vec[] = results vector (aka. array) [out]
60 * 4 : vec_len = number of usable slots in the vector (aka. array size)
62 * Returns : -1 => Error: vec_len is too small to hold all the
63 * data, or str == NULL.
64 * >=0 => the number of fields put in `vec'.
65 * On error, vec and str may still have been overwritten.
67 *********************************************************************/
68 int ssplit(char *str, const char *delim, char *vec[], size_t vec_len)
70 unsigned char is_delim[256];
71 unsigned char char_type;
80 /* Build is_delim array */
82 memset(is_delim, '\0', sizeof(is_delim));
86 delim = " \t"; /* default field separators */
91 is_delim[(unsigned)(unsigned char)*delim++] = 1; /* separator */
94 is_delim[(unsigned)(unsigned char)'\0'] = 2; /* terminator */
95 is_delim[(unsigned)(unsigned char)'\n'] = 2; /* terminator */
100 /* Skip leading separators. XXX: Why do they matter? */
101 while (is_delim[(unsigned)(unsigned char)*str] == 1)
106 /* The first pointer is the beginning of string */
107 if (is_delim[(unsigned)(unsigned char)*str] == 0)
110 * The first character in this field is not a
111 * delimiter or the end of string, so save it.
113 if (vec_count >= vec_len)
115 return(-1); /* overflow */
117 vec[vec_count++] = (char *) str;
120 while ((char_type = is_delim[(unsigned)(unsigned char)*str]) != 2)
124 /* the char is a separator */
126 /* null terminate the substring */
129 /* Check if we want to save this field */
130 if (is_delim[(unsigned)(unsigned char)*str] == 0)
133 * The first character in this field is not a
134 * delimiter or the end of string. So save it.
136 if (vec_count >= vec_len)
138 return(-1); /* overflow */
140 vec[vec_count++] = (char *) str;
148 *str = '\0'; /* null terminate the substring */