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-rw-r--r--contrib/ncurses/ncurses/tinfo/strings.c139
1 files changed, 139 insertions, 0 deletions
diff --git a/contrib/ncurses/ncurses/tinfo/strings.c b/contrib/ncurses/ncurses/tinfo/strings.c
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+/****************************************************************************
+ * Copyright (c) 2000 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Author: Thomas E. Dickey *
+ ****************************************************************************/
+
+/*
+** lib_mvcur.c
+**/
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id")
+
+/****************************************************************************
+ * Useful string functions (especially for mvcur)
+ ****************************************************************************/
+
+#if !HAVE_STRSTR
+char *
+_nc_strstr(const char *haystack, const char *needle)
+{
+ size_t len1 = strlen(haystack);
+ size_t len2 = strlen(needle);
+ char *result = 0;
+
+ while ((len1 != 0) && (len1-- >= len2)) {
+ if (!strncmp(haystack, needle, len2)) {
+ result = haystack;
+ break;
+ }
+ haystack++;
+ }
+ return result;
+}
+#endif
+
+/*
+ * Initialize the descriptor so we can append to it.
+ */
+string_desc *
+_nc_str_init(string_desc * dst, char *src, size_t len)
+{
+ if (dst != 0) {
+ dst->s_head = src;
+ dst->s_tail = src;
+ dst->s_size = len - 1;
+ if (src != 0)
+ *src = 0;
+ }
+ return dst;
+}
+
+/*
+ * Initialize the descriptor for only tracking the amount of memory used.
+ */
+string_desc *
+_nc_str_null(string_desc * dst, size_t len)
+{
+ return _nc_str_init(dst, 0, len);
+}
+
+/*
+ * Copy a descriptor
+ */
+string_desc *
+_nc_str_copy(string_desc * dst, string_desc * src)
+{
+ *dst = *src;
+ return dst;
+}
+
+/*
+ * Replaces strcat into a fixed buffer, returning false on failure.
+ */
+bool
+_nc_safe_strcat(string_desc * dst, const char *src)
+{
+ if (src != 0) {
+ size_t len = strlen(src);
+
+ if (len < dst->s_size) {
+ if (dst->s_tail != 0) {
+ strcpy(dst->s_tail, src);
+ dst->s_tail += len;
+ }
+ dst->s_size -= len;
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+/*
+ * Replaces strcpy into a fixed buffer, returning false on failure.
+ */
+bool
+_nc_safe_strcpy(string_desc * dst, const char *src)
+{
+ if (src != 0) {
+ size_t len = strlen(src);
+
+ if (len < dst->s_size) {
+ if (dst->s_head != 0) {
+ strcpy(dst->s_head, src);
+ dst->s_tail = dst->s_head + len;
+ }
+ dst->s_size -= len;
+ return TRUE;
+ }
+ }
+ return FALSE;
+}