nsprpub/lib/libc/src/strlen.c@6474c204b198 (annotated)
nsprpub/lib/libc/src/strlen.c
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "plstr.h" |
| michael@0 | 7 | #include "prtypes.h" |
| michael@0 | 8 | #include "prlog.h" |
| michael@0 | 9 | #include <string.h> |
| michael@0 | 10 | |
| michael@0 | 11 | PR_IMPLEMENT(PRUint32) |
| michael@0 | 12 | PL_strlen(const char *str) |
| michael@0 | 13 | { |
| michael@0 | 14 | size_t l; |
| michael@0 | 15 | |
| michael@0 | 16 | if( (const char *)0 == str ) return 0; |
| michael@0 | 17 | |
| michael@0 | 18 | l = strlen(str); |
| michael@0 | 19 | |
| michael@0 | 20 | /* error checking in case we have a 64-bit platform -- make sure |
| michael@0 | 21 | * we don't have ultra long strings that overflow an int32 |
| michael@0 | 22 | */ |
| michael@0 | 23 | if( sizeof(PRUint32) < sizeof(size_t) ) |
| michael@0 | 24 | { |
| michael@0 | 25 | if( l > PR_INT32_MAX ) |
| michael@0 | 26 | PR_Assert("l <= PR_INT32_MAX", __FILE__, __LINE__); |
| michael@0 | 27 | } |
| michael@0 | 28 | |
| michael@0 | 29 | return (PRUint32)l; |
| michael@0 | 30 | } |
| michael@0 | 31 | |
| michael@0 | 32 | PR_IMPLEMENT(PRUint32) |
| michael@0 | 33 | PL_strnlen(const char *str, PRUint32 max) |
| michael@0 | 34 | { |
| michael@0 | 35 | register const char *s; |
| michael@0 | 36 | |
| michael@0 | 37 | if( (const char *)0 == str ) return 0; |
| michael@0 | 38 | for( s = str; max && *s; s++, max-- ) |
| michael@0 | 39 | ; |
| michael@0 | 40 | |
| michael@0 | 41 | return (PRUint32)(s - str); |
| michael@0 | 42 | } |
