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-rw-r--r--mozilla/nsprpub/lib/libc/src/strstr.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/mozilla/nsprpub/lib/libc/src/strstr.c b/mozilla/nsprpub/lib/libc/src/strstr.c
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Netscape Portable Runtime (NSPR).
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "plstr.h"
+#include <string.h>
+
+PR_IMPLEMENT(char *)
+PL_strstr(const char *big, const char *little)
+{
+ if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
+ if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
+
+ return strstr(big, little);
+}
+
+PR_IMPLEMENT(char *)
+PL_strrstr(const char *big, const char *little)
+{
+ const char *p;
+ size_t ll;
+ size_t bl;
+
+ if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
+ if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
+
+ ll = strlen(little);
+ bl = strlen(big);
+ if( bl < ll ) return (char *)0;
+ p = &big[ bl - ll ];
+
+ for( ; p >= big; p-- )
+ if( *little == *p )
+ if( 0 == strncmp(p, little, ll) )
+ return (char *)p;
+
+ return (char *)0;
+}
+
+PR_IMPLEMENT(char *)
+PL_strnstr(const char *big, const char *little, PRUint32 max)
+{
+ size_t ll;
+
+ if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
+ if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
+
+ ll = strlen(little);
+ if( ll > (size_t)max ) return (char *)0;
+ max -= (PRUint32)ll;
+ max++;
+
+ for( ; max && *big; big++, max-- )
+ if( *little == *big )
+ if( 0 == strncmp(big, little, ll) )
+ return (char *)big;
+
+ return (char *)0;
+}
+
+PR_IMPLEMENT(char *)
+PL_strnrstr(const char *big, const char *little, PRUint32 max)
+{
+ const char *p;
+ size_t ll;
+
+ if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
+ if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
+
+ ll = strlen(little);
+
+ for( p = big; max && *p; p++, max-- )
+ ;
+
+ p -= ll;
+ if( p < big ) return (char *)0;
+
+ for( ; p >= big; p-- )
+ if( *little == *p )
+ if( 0 == strncmp(p, little, ll) )
+ return (char *)p;
+
+ return (char *)0;
+}