1 /****************************************************************************
2 * Copyright (c) 2000 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Thomas E. Dickey *
31 ****************************************************************************/
37 #include <curses.priv.h>
41 /****************************************************************************
42 * Useful string functions (especially for mvcur)
43 ****************************************************************************/
47 _nc_strstr(const char *haystack, const char *needle)
49 size_t len1 = strlen(haystack);
50 size_t len2 = strlen(needle);
53 while ((len1 != 0) && (len1-- >= len2)) {
54 if (!strncmp(haystack, needle, len2)) {
65 * Initialize the descriptor so we can append to it.
68 _nc_str_init(string_desc * dst, char *src, size_t len)
73 dst->s_size = len - 1;
81 * Initialize the descriptor for only tracking the amount of memory used.
84 _nc_str_null(string_desc * dst, size_t len)
86 return _nc_str_init(dst, 0, len);
93 _nc_str_copy(string_desc * dst, string_desc * src)
100 * Replaces strcat into a fixed buffer, returning false on failure.
103 _nc_safe_strcat(string_desc * dst, const char *src)
106 size_t len = strlen(src);
108 if (len < dst->s_size) {
109 if (dst->s_tail != 0) {
110 strcpy(dst->s_tail, src);
121 * Replaces strcpy into a fixed buffer, returning false on failure.
124 _nc_safe_strcpy(string_desc * dst, const char *src)
127 size_t len = strlen(src);
129 if (len < dst->s_size) {
130 if (dst->s_head != 0) {
131 strcpy(dst->s_head, src);
132 dst->s_tail = dst->s_head + len;