1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/cstdlib/LCHAR/STRSPN.C	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,75 @@
     1.4 +/*
     1.5 +* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.6 +* All rights reserved.
     1.7 +* This component and the accompanying materials are made available
     1.8 +* under the terms of "Eclipse Public License v1.0"
     1.9 +* which accompanies this distribution, and is available
    1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.11 +*
    1.12 +* Initial Contributors:
    1.13 +* Nokia Corporation - initial contribution.
    1.14 +*
    1.15 +* Contributors:
    1.16 +*
    1.17 +* Description:
    1.18 +* FUNCTION
    1.19 +* <<strspn>>---find initial match
    1.20 +* INDEX
    1.21 +* strspn
    1.22 +* ANSI_SYNOPSIS
    1.23 +* #include <string.h>
    1.24 +* size_t strspn(const char *<[s1]>, const char *<[s2]>);
    1.25 +* TRAD_SYNOPSIS
    1.26 +* #include <string.h>
    1.27 +* size_t strspn(<[s1]>, <[s2]>)
    1.28 +* char *<[s1]>;
    1.29 +* char *<[s2]>;
    1.30 +* This function computes the length of the initial segment of
    1.31 +* the string pointed to by <[s1]> which consists entirely of
    1.32 +* characters from the string pointed to by <[s2]> (excluding the
    1.33 +* terminating null character).
    1.34 +* RETURNS
    1.35 +* <<strspn>> returns the length of the segment found.
    1.36 +* PORTABILITY
    1.37 +* <<strspn>> is ANSI C.
    1.38 +* <<strspn>> requires no supporting OS subroutines.
    1.39 +* QUICKREF
    1.40 +* strspn ansi pure
    1.41 +* 
    1.42 +*
    1.43 +*/
    1.44 +
    1.45 +
    1.46 +
    1.47 +#include <string.h>
    1.48 +
    1.49 +/**
    1.50 +Get length of substring composed of given characters.
    1.51 +Scans s1 character by character, returning the number of characters read before 
    1.52 +the first character not included in s2 is found.
    1.53 +The search does not include terminating null-characters.
    1.54 +@return the length of the initial substring of s1 
    1.55 +that is only composed of characters included in s2.
    1.56 +@param s1 Null-terminated string to be scanned. 
    1.57 +@param s2 Null-terminated string containing character set.
    1.58 +*/
    1.59 +EXPORT_C size_t
    1.60 +strspn (const char *s1, const char *s2)
    1.61 +{
    1.62 +  const char *s = s1;
    1.63 +  const char *c;
    1.64 +
    1.65 +  while (*s1)
    1.66 +    {
    1.67 +      for (c = s2; *c; c++)
    1.68 +	{
    1.69 +	  if (*s1 == *c)
    1.70 +	    break;
    1.71 +	}
    1.72 +      if (*c == '\0')
    1.73 +	break;
    1.74 +      s1++;
    1.75 +    }
    1.76 +
    1.77 +  return s1 - s;
    1.78 +}