fltk/src/flstring.c
Fabien Costantini 56a184d529 STR 2771 fix: introduce a new ascii strcasecmp that does not rely on locale sensitive toupper tolower.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@9368 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2012-04-21 17:21:11 +00:00

112 lines
2.2 KiB
C

/*
* "$Id$"
*
* BSD string functions for the Fast Light Tool Kit (FLTK).
*
* Copyright 1998-2010 by Bill Spitzak and others.
*
* This library is free software. Distribution and use rights are outlined in
* the file "COPYING" which should have been included with this file. If this
* file is missing or damaged, see the license at:
*
* http://www.fltk.org/COPYING.php
*
* Please report all bugs and problems on the following page:
*
* http://www.fltk.org/str.php
*/
#include "flstring.h"
/*
* 'fl_strlcat()' - Safely concatenate two strings.
*/
size_t /* O - Length of string */
fl_strlcat(char *dst, /* O - Destination string */
const char *src, /* I - Source string */
size_t size) { /* I - Size of destination string buffer */
size_t srclen; /* Length of source string */
size_t dstlen; /* Length of destination string */
/*
* Figure out how much room is left...
*/
dstlen = strlen(dst);
size -= dstlen + 1;
if (!size) return (dstlen); /* No room, return immediately... */
/*
* Figure out how much room is needed...
*/
srclen = strlen(src);
/*
* Copy the appropriate amount...
*/
if (srclen > size) srclen = size;
memcpy(dst + dstlen, src, srclen);
dst[dstlen + srclen] = '\0';
return (dstlen + srclen);
}
/*
* 'fl_strlcpy()' - Safely copy two strings.
*/
size_t /* O - Length of string */
fl_strlcpy(char *dst, /* O - Destination string */
const char *src, /* I - Source string */
size_t size) { /* I - Size of destination string buffer */
size_t srclen; /* Length of source string */
/*
* Figure out how much room is needed...
*/
size --;
srclen = strlen(src);
/*
* Copy the appropriate amount...
*/
if (srclen > size) srclen = size;
memcpy(dst, src, srclen);
dst[srclen] = '\0';
return (srclen);
}
/**
* locale independent ascii oriented case cmp
* returns 0 if string successfully compare, non zero otherwise
*/
int fl_ascii_strcasecmp(const char *s, const char *t) {
if (!s || !t) return (s!=t);
if (strlen(s) != strlen(t)) return -1;
for(;*s; s++,t++) {
if ( *s != *t) {
if (*s<*t && (*s+0x20)!=*t ) return -1;
if (*s>*t && *s!=(*t+0x20) ) return +1;
}
}
return 0;
}
/*
* End of "$Id$".
*/