os/ossrv/genericopenlibs/cstdlib/LCHAR/STRCHR.C
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib.
sl@0
     1
/*
sl@0
     2
* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0
     3
* All rights reserved.
sl@0
     4
* This component and the accompanying materials are made available
sl@0
     5
* under the terms of "Eclipse Public License v1.0"
sl@0
     6
* which accompanies this distribution, and is available
sl@0
     7
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0
     8
*
sl@0
     9
* Initial Contributors:
sl@0
    10
* Nokia Corporation - initial contribution.
sl@0
    11
*
sl@0
    12
* Contributors:
sl@0
    13
*
sl@0
    14
* Description:
sl@0
    15
* FUNCTION
sl@0
    16
* <<strchr>>---search for character in string
sl@0
    17
* INDEX
sl@0
    18
* strchr
sl@0
    19
* ANSI_SYNOPSIS
sl@0
    20
* #include <string.h>
sl@0
    21
* char * strchr(const char *<[string]>, int <[c]>);
sl@0
    22
* TRAD_SYNOPSIS
sl@0
    23
* #include <string.h>
sl@0
    24
* char * strchr(<[string]>, <[c]>);
sl@0
    25
* char *<[string]>;
sl@0
    26
* int *<[c]>;
sl@0
    27
* This function finds the first occurence of <[c]> (converted to
sl@0
    28
* a char) in the string pointed to by <[string]> (including the
sl@0
    29
* terminating null character).
sl@0
    30
* RETURNS
sl@0
    31
* Returns a pointer to the located character, or a null pointer
sl@0
    32
* if <[c]> does not occur in <[string]>.
sl@0
    33
* PORTABILITY
sl@0
    34
* <<strchr>> is ANSI C.
sl@0
    35
* <<strchr>> requires no supporting OS subroutines.
sl@0
    36
* QUICKREF
sl@0
    37
* strchr ansi pure
sl@0
    38
* 
sl@0
    39
*
sl@0
    40
*/
sl@0
    41
sl@0
    42
sl@0
    43
sl@0
    44
#include <string.h>
sl@0
    45
sl@0
    46
/**
sl@0
    47
Find character in string.
sl@0
    48
Returns the first occurrence of i in string.
sl@0
    49
The null-terminating character is included as part of the string 
sl@0
    50
and can also be searched.
sl@0
    51
@return a pointer to the first occurrence of i in string is returned.
sl@0
    52
otherwise NULL is returned.
sl@0
    53
@param s Null-terminated string scanned in the search. 
sl@0
    54
@param i Character to be found.
sl@0
    55
*/
sl@0
    56
EXPORT_C char *
sl@0
    57
strchr (const char *s, int i)
sl@0
    58
{
sl@0
    59
	i = (char)i;
sl@0
    60
sl@0
    61
	for (;;)
sl@0
    62
	{
sl@0
    63
		int c = *s++;
sl@0
    64
		if (c == i)
sl@0
    65
			return (char *) (s - 1);
sl@0
    66
		if (c == 0)
sl@0
    67
			return NULL;
sl@0
    68
	}
sl@0
    69
}
sl@0
    70
sl@0
    71
EXPORT_C char *
sl@0
    72
index (const char *s, int i)
sl@0
    73
{
sl@0
    74
    return strchr(s, i);
sl@0
    75
}