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/*
* 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:
*
* https://www.fltk.org/COPYING.php
*
* Please see the following page on how to report bugs and issues:
*
* https://www.fltk.org/bugs.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);
}
#define C_RANGE(c,l,r) ( (c) >= (l) && (c) <= (r) )
/**
* locale independent ascii oriented case cmp
* returns 0 if string successfully compare, -1 if s<t, +1 if s>t
*/
int fl_ascii_strcasecmp(const char *s, const char *t) {
if (!s || !t) return (s==t ? 0 : (!s ? -1 : +1));
for(;*s && *t; s++,t++) {
if (*s == *t) continue;
if (*s < *t) {
if ( (*s+0x20)!=*t || !C_RANGE(*s,'A','Z') ) return -1;
} else { /* (*s > *t) */
if ( (*s-0x20)!=*t || !C_RANGE(*s,'a','z') ) return +1;
}
}
return (*s==*t) ? 0 : (*t ? -1 : +1);
}
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