i have written an alternative function to strtok(), which i think is better and easier to use. I hope it
will be usefull. Here is the code snippet from my program:
CODE
1 /*
2 * The Ultimate Network Tool.
3 * Copyright (C) 2004 Virtual Pointer
4 *
5 * The Ultimate Network Tool is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public
16 * License along with this program; if not, write to the Free
17 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 * 02111-1307 USA.
19 */
20
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24
25 /* sample:
26 *
27 * char **tokens;
28 * ex_tokens("some string", ' ', &tokens);
29 *
30 * while (*tokens)
31 * {
32 * printf("%s\n", *tokens);
33 * tokens++;
34 * }
35 *
36 * free(*tokens);
37 */
38
39 int ex_tokens(char *string, char c, char ***tokens)
40 {
41 int i, toks = 0;
42 char **tmp_tokens;
43 char *tmp_string;
44
45
46 if (string == NULL)
47 return (0);
48
49 for (i = 0; i < strlen(string); i++)
50 {
51 if (string[i] == c)
52 toks++;
53 }
54
55 if (toks)
56 {
57 toks++;
58
59 if ( (tmp_string = (char *)malloc(strlen(string)+1)) == NULL)
60 return (0);
61
62 memset(tmp_string, 0, strlen(string)+1);
63
64 if ( (tmp_tokens = (char **)calloc(toks, sizeof(char *))))
65 {
66 toks = 0;
67 for (i = 0; i < strlen(string); i++)
68 {
69 /* cia toks patikrinimas tam jei stringas prasideda skirtuku */
70 if (string[i] == c && strlen(tmp_string))
71 {
72 if ( (tmp_tokens[toks] = (char *)malloc(strlen(tmp_string)+1)))
73 {
74 memset(tmp_tokens[toks], 0, strlen(tmp_string));
75 strncpy(tmp_tokens[toks], tmp_string, strlen(tmp_string));
76 memset(tmp_string, 0, strlen(tmp_string)+1);
77 toks++;
78 }
79 else
80 {
81 free(tmp_string);
82 free(tmp_tokens);
83 return (0);
84 }
85 }
86 else
87 {
88 if (string[i] == c)
89 continue;
90 strncat(tmp_string, (char*)&string[i], 1);
91 }
92 }
93
94 if (strlen(tmp_string))
95 {
96 if ( (tmp_tokens[toks] = (char *)malloc(strlen(tmp_string)+1)))
97 {
98 memset(tmp_tokens[toks], 0, strlen(tmp_string));
99 strncpy(tmp_tokens[toks], tmp_string, strlen(tmp_string));
100 }
101 else
102 {
103 free(tmp_string);
104 free(tmp_tokens);
105 return (0);
106 }
107 }
108
109 free(tmp_string);
110 *tokens = tmp_tokens;
111 return (1);
112 }
113 else
114 return (0);
115 }
116
117 return(0);
118 }
2 * The Ultimate Network Tool.
3 * Copyright (C) 2004 Virtual Pointer
4 *
5 * The Ultimate Network Tool is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public
16 * License along with this program; if not, write to the Free
17 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 * 02111-1307 USA.
19 */
20
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24
25 /* sample:
26 *
27 * char **tokens;
28 * ex_tokens("some string", ' ', &tokens);
29 *
30 * while (*tokens)
31 * {
32 * printf("%s\n", *tokens);
33 * tokens++;
34 * }
35 *
36 * free(*tokens);
37 */
38
39 int ex_tokens(char *string, char c, char ***tokens)
40 {
41 int i, toks = 0;
42 char **tmp_tokens;
43 char *tmp_string;
44
45
46 if (string == NULL)
47 return (0);
48
49 for (i = 0; i < strlen(string); i++)
50 {
51 if (string[i] == c)
52 toks++;
53 }
54
55 if (toks)
56 {
57 toks++;
58
59 if ( (tmp_string = (char *)malloc(strlen(string)+1)) == NULL)
60 return (0);
61
62 memset(tmp_string, 0, strlen(string)+1);
63
64 if ( (tmp_tokens = (char **)calloc(toks, sizeof(char *))))
65 {
66 toks = 0;
67 for (i = 0; i < strlen(string); i++)
68 {
69 /* cia toks patikrinimas tam jei stringas prasideda skirtuku */
70 if (string[i] == c && strlen(tmp_string))
71 {
72 if ( (tmp_tokens[toks] = (char *)malloc(strlen(tmp_string)+1)))
73 {
74 memset(tmp_tokens[toks], 0, strlen(tmp_string));
75 strncpy(tmp_tokens[toks], tmp_string, strlen(tmp_string));
76 memset(tmp_string, 0, strlen(tmp_string)+1);
77 toks++;
78 }
79 else
80 {
81 free(tmp_string);
82 free(tmp_tokens);
83 return (0);
84 }
85 }
86 else
87 {
88 if (string[i] == c)
89 continue;
90 strncat(tmp_string, (char*)&string[i], 1);
91 }
92 }
93
94 if (strlen(tmp_string))
95 {
96 if ( (tmp_tokens[toks] = (char *)malloc(strlen(tmp_string)+1)))
97 {
98 memset(tmp_tokens[toks], 0, strlen(tmp_string));
99 strncpy(tmp_tokens[toks], tmp_string, strlen(tmp_string));
100 }
101 else
102 {
103 free(tmp_string);
104 free(tmp_tokens);
105 return (0);
106 }
107 }
108
109 free(tmp_string);
110 *tokens = tmp_tokens;
111 return (1);
112 }
113 else
114 return (0);
115 }
116
117 return(0);
118 }
