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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /nsprpub/lib/libc/src/strlen.c | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'nsprpub/lib/libc/src/strlen.c')
-rw-r--r-- | nsprpub/lib/libc/src/strlen.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/nsprpub/lib/libc/src/strlen.c b/nsprpub/lib/libc/src/strlen.c new file mode 100644 index 000000000..ba6c612de --- /dev/null +++ b/nsprpub/lib/libc/src/strlen.c @@ -0,0 +1,42 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#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); +} |