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/*
* COPYRIGHT AND PERMISSION NOTICE
*
* Copyright (c) 2003 Embedded Unit Project
*
* All rights reserved.
*
* 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, and/or sell copies of the Software, and to permit persons
* to whom the Software is furnished to do so, provided that the above
* copyright notice(s) and this permission notice appear in all copies
* of the Software and that both the above copyright notice(s) and this
* permission notice appear in supporting documentation.
*
* 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
* OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY
* SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Except as contained in this notice, the name of a copyright holder
* shall not be used in advertising or otherwise to promote the sale,
* use or other dealings in this Software without prior written
* authorization of the copyright holder.
*
* $Id: stdImpl.c,v 1.3 2004/02/10 16:15:25 arms22 Exp $
*/
#include "stdImpl.h"
char* stdimpl_strcpy(char *dst, const char *src)
{
char *start = dst;
char c;
do {
c = *src;
*dst = c;
src++;
dst++;
} while (c);
return start;
}
char* stdimpl_strcat(char *dst, const char *src)
{
char *start = dst;
char c;
do {
c = *dst;
dst++;
} while (c);
dst--;
do {
c = *src;
*dst = c;
src++;
dst++;
} while (c);
return start;
}
char* stdimpl_strncat(char *dst, const char *src,unsigned int count)
{
char *start = dst;
char c;
do {
c = *dst;
dst++;
} while (c);
dst--;
if (count) {
do {
c = *src;
*dst = c;
src++;
dst++;
count--;
} while (c && count);
*dst = '\0';
}
return start;
}
int stdimpl_strlen(const char *str)
{
const char *estr = str;
char c;
do {
c = *estr;
estr++;
} while (c);
return ((int)(estr - str - 1));
}
int stdimpl_strcmp(const char *s1, const char *s2)
{
char c1,c2;
do {
c1 = *s1++;
c2 = *s2++;
} while ((c1) && (c2) && (c1==c2));
return c1 - c2;
}
static char* _xtoa(unsigned long v,char *string, int r, int is_neg)
{
char *start = string;
char buf[33],*p;
p = buf;
do {
*p++ = "0123456789abcdef"[(v % r) & 0xf];
} while (v /= r);
if (is_neg) {
*p++ = '-';
}
do {
*string++ = *--p;
} while (buf != p);
*string = '\0';
return start;
}
char* stdimpl_itoa(int v,char *string,int r)
{
if ((r == 10) && (v < 0)) {
return _xtoa((unsigned long)(-v), string, r, 1);
}
return _xtoa((unsigned long)(v), string, r, 0);
}
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