ncurses 5.7 - patch 20090510

[ncurses.git] / ncurses / tinfo / strings.c

diff --git a/ncurses/tinfo/strings.c b/ncurses/tinfo/strings.c
index 8198ec4050adaccf5e7329c509e2b220b79bd996..78cd2ef4f5f510ca7a4bdc36349b9f9d62f81626 100644 (file)
--- a/ncurses/tinfo/strings.c
+++ b/ncurses/tinfo/strings.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 2000 Free Software Foundation, Inc.                        *
+ * Copyright (c) 2000-2003,2007 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            *
@@ -36,14 +36,14 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id")
+MODULE_ID("$Id: strings.c,v 1.6 2007/08/11 17:12:17 tom Exp $")
 
 /****************************************************************************
  * Useful string functions (especially for mvcur)
  ****************************************************************************/
 
 #if !HAVE_STRSTR
-char *
+NCURSES_EXPORT(char *)
 _nc_strstr(const char *haystack, const char *needle)
 {
     size_t len1 = strlen(haystack);
@@ -52,7 +52,7 @@ _nc_strstr(const char *haystack, const char *needle)
 
     while ((len1 != 0) && (len1-- >= len2)) {
        if (!strncmp(haystack, needle, len2)) {
-           result = haystack;
+           result = (char *) haystack;
            break;
        }
        haystack++;
@@ -62,15 +62,18 @@ _nc_strstr(const char *haystack, const char *needle)
 #endif
 
 /*
- * Initialize the descriptor so we can append to it.
+ * Initialize the descriptor so we can append to it.  Note that 'src' may
+ * be a null pointer (see _nc_str_null), so the corresponding strcat and
+ * strcpy calls have to allow for this.
  */
-string_desc *
+NCURSES_EXPORT(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;
+       dst->s_init = dst->s_size;
        if (src != 0)
            *src = 0;
     }
@@ -80,7 +83,7 @@ _nc_str_init(string_desc * dst, char *src, size_t len)
 /*
  * Initialize the descriptor for only tracking the amount of memory used.
  */
-string_desc *
+NCURSES_EXPORT(string_desc *)
 _nc_str_null(string_desc * dst, size_t len)
 {
     return _nc_str_init(dst, 0, len);
@@ -89,7 +92,7 @@ _nc_str_null(string_desc * dst, size_t len)
 /*
  * Copy a descriptor
  */
-string_desc *
+NCURSES_EXPORT(string_desc *)
 _nc_str_copy(string_desc * dst, string_desc * src)
 {
     *dst = *src;
@@ -99,7 +102,7 @@ _nc_str_copy(string_desc * dst, string_desc * src)
 /*
  * Replaces strcat into a fixed buffer, returning false on failure.
  */
-bool
+NCURSES_EXPORT(bool)
 _nc_safe_strcat(string_desc * dst, const char *src)
 {
     if (src != 0) {
@@ -120,7 +123,7 @@ _nc_safe_strcat(string_desc * dst, const char *src)
 /*
  * Replaces strcpy into a fixed buffer, returning false on failure.
  */
-bool
+NCURSES_EXPORT(bool)
 _nc_safe_strcpy(string_desc * dst, const char *src)
 {
     if (src != 0) {
@@ -131,7 +134,7 @@ _nc_safe_strcpy(string_desc * dst, const char *src)
                strcpy(dst->s_head, src);
                dst->s_tail = dst->s_head + len;
            }
-           dst->s_size -= len;
+           dst->s_size = dst->s_init - len;
            return TRUE;
        }
     }