1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/cstdlib/LCHAR/STRSTR.C	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,88 @@
     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 +* <<strstr>>---find string segment
    1.20 +* INDEX
    1.21 +* strstr
    1.22 +* ANSI_SYNOPSIS
    1.23 +* #include <string.h>
    1.24 +* char *strstr(const char *<[s1]>, const char *<[s2]>);
    1.25 +* TRAD_SYNOPSIS
    1.26 +* #include <string.h>
    1.27 +* char *strstr(<[s1]>, <[s2]>)
    1.28 +* char *<[s1]>;
    1.29 +* char *<[s2]>;
    1.30 +* Locates the first occurence in the string pointed to by <[s1]> of
    1.31 +* the sequence of characters in the string pointed to by <[s2]>
    1.32 +* (excluding the terminating null  character).
    1.33 +* RETURNS
    1.34 +* Returns a pointer to the located string segment, or a null
    1.35 +* pointer if the string <[s2]> is not found. If <[s2]> points to
    1.36 +* a string with zero length, the <[s1]> is returned.
    1.37 +* PORTABILITY
    1.38 +* <<strstr>> is ANSI C.
    1.39 +* <<strstr>> requires no supporting OS subroutines.
    1.40 +* QUICKREF
    1.41 +* strstr ansi pure
    1.42 +* 
    1.43 +*
    1.44 +*/
    1.45 +
    1.46 +
    1.47 +
    1.48 +#include <string.h>
    1.49 +
    1.50 +/**
    1.51 +Find substring.
    1.52 +Scans string1 for the first occurrence of string2.
    1.53 +The search does not include terminating null-characters.
    1.54 +@return A pointer to the first occurrence of lookfor in searchee.
    1.55 +If lookfor is not found in searchee the function returns NULL.
    1.56 +@param searchee Null-terminated string to search. 
    1.57 +@param lookfor Null-terminated string containing the substring to search for.
    1.58 +*/
    1.59 +EXPORT_C char *
    1.60 +strstr (const char *searchee, const char *lookfor)
    1.61 +{
    1.62 +  if (*searchee == 0)
    1.63 +    {
    1.64 +      if (*lookfor)
    1.65 +	return (char *) NULL;
    1.66 +      return (char *) searchee;
    1.67 +    }
    1.68 +
    1.69 +  while (*searchee)
    1.70 +    {
    1.71 +      size_t i;
    1.72 +      i = 0;
    1.73 +
    1.74 +      for (;;)
    1.75 +	{
    1.76 +	  if (lookfor[i] == 0)
    1.77 +	    {
    1.78 +	      return (char *) searchee;
    1.79 +	    }
    1.80 +
    1.81 +	  if (lookfor[i] != searchee[i])
    1.82 +	    {
    1.83 +	      break;
    1.84 +	    }
    1.85 +	  i++;
    1.86 +	}
    1.87 +      searchee++;
    1.88 +    }
    1.89 +
    1.90 +  return (char *) NULL;
    1.91 +}