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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "plstr.h"
#include <string.h>
PR_IMPLEMENT(char *)
PL_strchr(const char *s, char c)
{
if( (const char *)0 == s ) {
return (char *)0;
}
return strchr(s, c);
}
PR_IMPLEMENT(char *)
PL_strrchr(const char *s, char c)
{
if( (const char *)0 == s ) {
return (char *)0;
}
return strrchr(s, c);
}
PR_IMPLEMENT(char *)
PL_strnchr(const char *s, char c, PRUint32 n)
{
if( (const char *)0 == s ) {
return (char *)0;
}
for( ; n && *s; s++, n-- )
if( *s == c ) {
return (char *)s;
}
if( ((char)0 == c) && (n > 0) && ((char)0 == *s) ) {
return (char *)s;
}
return (char *)0;
}
PR_IMPLEMENT(char *)
PL_strnrchr(const char *s, char c, PRUint32 n)
{
const char *p;
if( (const char *)0 == s ) {
return (char *)0;
}
for( p = s; n && *p; p++, n-- )
;
if( ((char)0 == c) && (n > 0) && ((char)0 == *p) ) {
return (char *)p;
}
for( p--; p >= s; p-- )
if( *p == c ) {
return (char *)p;
}
return (char *)0;
}
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