2 Unix SMB/CIFS implementation.
3 Samba utility functions
5 Copyright (C) Andrew Tridgell 1992-2001
6 Copyright (C) Simo Sorce 2001-2002
7 Copyright (C) Martin Pool 2003
8 Copyright (C) James Peach 2005
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
28 * @brief Substitute utilities.
32 Substitute a string for a pattern in another string. Make sure there is
35 This routine looks for pattern in s and replaces it with
36 insert. It may do multiple replacements.
38 Any of " ; ' $ or ` in the insert string are replaced with _
39 if len==0 then the string cannot be extended. This is different from the old
40 use of len==0 which was for no length checks to be done.
43 _PUBLIC_ void string_sub(char *s, const char *pattern, const char *insert, size_t len)
46 ssize_t ls, lp, li, i;
48 if (!insert || !pattern || !*pattern || !s)
51 ls = (ssize_t)strlen(s);
52 lp = (ssize_t)strlen(pattern);
53 li = (ssize_t)strlen(insert);
56 len = ls + 1; /* len is number of *bytes* */
58 while (lp <= ls && (p = strstr(s, pattern))) {
59 if (ls + (li-lp) >= len) {
60 DEBUG(0,("ERROR: string overflow by %d in string_sub(%.50s, %d)\n",
61 (int)(ls + (li-lp) - len),
66 memmove(p+li,p+lp,strlen(p+lp)+1);
90 * Talloc'ed version of string_sub
92 _PUBLIC_ char *string_sub_talloc(TALLOC_CTX *mem_ctx, const char *s,
93 const char *pattern, const char *insert)
97 size_t len, alloc_len;
99 if (insert == NULL || pattern == NULL || !*pattern || s == NULL)
102 /* determine length needed */
105 for (p = strstr(s, pattern); p != NULL;
106 p = strstr(p+strlen(pattern), pattern)) {
107 len += strlen(insert) - strlen(pattern);
110 alloc_len = MAX(len, strlen(s))+1;
111 ret = talloc_array(mem_ctx, char, alloc_len);
114 strncpy(ret, s, alloc_len);
115 string_sub(ret, pattern, insert, alloc_len);
117 ret = talloc_realloc(mem_ctx, ret, char, len+1);
121 SMB_ASSERT(ret[len] == '\0');
123 talloc_set_name_const(ret, ret);
129 Similar to string_sub() but allows for any character to be substituted.
131 if len==0 then the string cannot be extended. This is different from the old
132 use of len==0 which was for no length checks to be done.
135 _PUBLIC_ void all_string_sub(char *s,const char *pattern,const char *insert, size_t len)
140 if (!insert || !pattern || !s)
143 ls = (ssize_t)strlen(s);
144 lp = (ssize_t)strlen(pattern);
145 li = (ssize_t)strlen(insert);
151 len = ls + 1; /* len is number of *bytes* */
153 while (lp <= ls && (p = strstr(s,pattern))) {
154 if (ls + (li-lp) >= len) {
155 DEBUG(0,("ERROR: string overflow by %d in all_string_sub(%.50s, %d)\n",
156 (int)(ls + (li-lp) - len),
161 memmove(p+li,p+lp,strlen(p+lp)+1);
163 memcpy(p, insert, li);