1 /* 2 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of version 2 of the GNU General Public License as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it would be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 * 12 * Further, this software is distributed without any warranty that it is 13 * free of the rightful claim of any third person regarding infringement 14 * or the like. Any license provided herein, whether implied or 15 * otherwise, applies only to this software file. Patent licenses, if 16 * any, provided herein do not apply to combinations of this program with 17 * other software, or any other product whatsoever. 18 * 19 * You should have received a copy of the GNU General Public License along 20 * with this program; if not, write the Free Software Foundation, Inc., 21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 22 * 23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 24 * Mountain View, CA 94043, or: 25 * 26 * http://www.sgi.com 27 * 28 * For further information regarding this notice, see: 29 * 30 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ 31 */ 32 /********************************************************** 33 * 34 * OS Testing - Silicon Graphics, Inc. 35 * 36 * FUNCTION NAME : string_to_tokens 37 * 38 * FUNCTION TITLE : Break a string into its tokens 39 * 40 * SYNOPSIS: 41 * 42 * int string_to_tokens(arg_string, arg_array, array_size, separator) 43 * char *arg_string; 44 * char *arg_array[]; 45 * int array_size; 46 * char *separator; 47 * 48 * AUTHOR : Richard Logan 49 * 50 * DATE : 10/94 51 * 52 * INITIAL RELEASE : UNICOS 7.0 53 * 54 * DESCRIPTION 55 * This function parses the string 'arg_string', placing pointers to 56 * the 'separator' separated tokens into the elements of 'arg_array'. 57 * The array is terminated with a null pointer. 58 * 'arg_array' must contains at least 'array_size' elements. 59 * Only the first 'array_size' minus one tokens will be placed into 60 * 'arg_array'. If there are more than 'array_size'-1 tokens, the rest are 61 * ignored by this routine. 62 * 63 * RETURN VALUE 64 * This function returns the number of 'separator' separated tokens that 65 * were found in 'arg_string'. 66 * If 'arg_array' or 'separator' is NULL or 'array_size' is less than 2, -1 is returned. 67 * 68 * WARNING 69 * This function uses strtok() to parse 'arg_string', and thus 70 * physically alters 'arg_string' by placing null characters where the 71 * separators originally were. 72 * 73 * 74 *#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#**/ 75 #include <stdio.h> 76 #include <string.h> /* for string functions */ 77 #include "string_to_tokens.h" 78 79 int 80 string_to_tokens(char *arg_string, char *arg_array[], int array_size, 81 char *separator) 82 { 83 int num_toks = 0; /* number of tokens found */ 84 char *strtok(); 85 86 if (arg_array == NULL || array_size <= 1 || separator == NULL) 87 return -1; 88 89 /* 90 * Use strtok() to parse 'arg_string', placing pointers to the 91 * individual tokens into the elements of 'arg_array'. 92 */ 93 if ((arg_array[num_toks] = strtok(arg_string, separator)) == NULL) { 94 return 0; 95 } 96 97 for (num_toks = 1; num_toks < array_size; num_toks++) { 98 if ((arg_array[num_toks] = strtok(NULL, separator)) == NULL) 99 break; 100 } 101 102 if (num_toks == array_size) 103 arg_array[num_toks] = NULL; 104 105 /* 106 * Return the number of tokens that were found in 'arg_string'. 107 */ 108 return (num_toks); 109 110 } /* end of string_to_tokens */ 111
