/src/nspr/lib/libc/src/strlen.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
3 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
4 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
5 | | |
6 | | #include "plstr.h" |
7 | | #include "prtypes.h" |
8 | | #include "prlog.h" |
9 | | #include <string.h> |
10 | | |
11 | | PR_IMPLEMENT(PRUint32) |
12 | 0 | PL_strlen(const char* str) { |
13 | 0 | size_t l; |
14 | |
|
15 | 0 | if ((const char*)0 == str) { |
16 | 0 | return 0; |
17 | 0 | } |
18 | | |
19 | 0 | l = strlen(str); |
20 | | |
21 | | /* error checking in case we have a 64-bit platform -- make sure |
22 | | * we don't have ultra long strings that overflow an int32 |
23 | | */ |
24 | 0 | if (sizeof(PRUint32) < sizeof(size_t)) { |
25 | 0 | if (l > PR_INT32_MAX) { |
26 | 0 | PR_Assert("l <= PR_INT32_MAX", __FILE__, __LINE__); |
27 | 0 | } |
28 | 0 | } |
29 | |
|
30 | 0 | return (PRUint32)l; |
31 | 0 | } |
32 | | |
33 | | PR_IMPLEMENT(PRUint32) |
34 | 0 | PL_strnlen(const char* str, PRUint32 max) { |
35 | 0 | register const char* s; |
36 | |
|
37 | 0 | if ((const char*)0 == str) { |
38 | 0 | return 0; |
39 | 0 | } |
40 | 0 | for (s = str; max && *s; s++, max--); |
41 | |
|
42 | 0 | return (PRUint32)(s - str); |
43 | 0 | } |