genericopenlibs/cstdlib/LCHAR/STRCSPN.C
changeset 0 e4d67989cc36
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/cstdlib/LCHAR/STRCSPN.C	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,71 @@
+/*
+* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+* FUNCTION
+* <<strcspn>>---count chars not in string
+* INDEX
+* strcspn
+* ANSI_SYNOPSIS
+* size_t strcspn(const char *<[s1]>, const char *<[s2]>);
+* TRAD_SYNOPSIS
+* size_t strcspn(<[s1]>, <[s2]>)
+* char *<[s1]>;
+* char *<[s2]>;
+* This function computes the length of the initial part of
+* the string pointed to by <[s1]> which consists entirely of
+* characters <[NOT]> from the string pointed to by <[s2]>
+* (excluding the terminating null character).
+* RETURNS
+* <<strcspn>> returns the length of the substring found.
+* PORTABILITY
+* <<strcspn>> is ANSI C.
+* <<strcspn>> requires no supporting OS subroutines.
+* 
+*
+*/
+
+
+
+#include <string.h>
+
+/**
+Search string for occurrence of character set.
+Scans s1 character by character, returning the number of characters read
+until the first occurrence of any character included in s2.
+The search includes terminating null-characters, so the function 
+will return the length of s1 if none of the characters included in s2 is in s1.
+@return the position in s1 of the first occurence of a component character of s2.
+@param s1 Null-terminated string to be scanned. 
+@param s2 Null-terminated string containing the character set to search for.
+*/
+EXPORT_C size_t
+strcspn (const char *s1, const char *s2)
+{
+  const char *s = s1;
+  const char *c;
+
+  while (*s1)
+    {
+      for (c = s2; *c; c++)
+	{
+	  if (*s1 == *c)
+	    break;
+	}
+      if (*c)
+	break;
+      s1++;
+    }
+
+  return s1 - s;
+}