diff options
Diffstat (limited to 'mozilla/nsprpub/lib/libc/src/strlen.c')
-rw-r--r-- | mozilla/nsprpub/lib/libc/src/strlen.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/mozilla/nsprpub/lib/libc/src/strlen.c b/mozilla/nsprpub/lib/libc/src/strlen.c new file mode 100644 index 0000000..e03f7d2 --- /dev/null +++ b/mozilla/nsprpub/lib/libc/src/strlen.c @@ -0,0 +1,74 @@ +/* -*- 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 "prtypes.h" +#include "prlog.h" +#include <string.h> + +PR_IMPLEMENT(PRUint32) +PL_strlen(const char *str) +{ + size_t l; + + if( (const char *)0 == str ) return 0; + + l = strlen(str); + + /* error checking in case we have a 64-bit platform -- make sure + * we don't have ultra long strings that overflow an int32 + */ + if( sizeof(PRUint32) < sizeof(size_t) ) + { + if( l > PR_INT32_MAX ) + PR_Assert("l <= PR_INT32_MAX", __FILE__, __LINE__); + } + + return (PRUint32)l; +} + +PR_IMPLEMENT(PRUint32) +PL_strnlen(const char *str, PRUint32 max) +{ + register const char *s; + + if( (const char *)0 == str ) return 0; + for( s = str; max && *s; s++, max-- ) + ; + + return (PRUint32)(s - str); +} |