The Tor Browser: nsprpub/lib/libc/src/strlen.c@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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/. */

     6 #include "plstr.h"

     7 #include "prtypes.h"

     8 #include "prlog.h"

     9 #include <string.h>

    11 PR_IMPLEMENT(PRUint32)

    12 PL_strlen(const char *str)

    13 {

    14     size_t l;

    16     if( (const char *)0 == str ) return 0;

    18     l = strlen(str);

    20     /* error checking in case we have a 64-bit platform -- make sure

    21      * we don't have ultra long strings that overflow an int32

    22      */

    23     if( sizeof(PRUint32) < sizeof(size_t) )

    24     {

    25         if( l > PR_INT32_MAX )

    26             PR_Assert("l <= PR_INT32_MAX", __FILE__, __LINE__);

    27     }

    29     return (PRUint32)l;

    30 }

    32 PR_IMPLEMENT(PRUint32)

    33 PL_strnlen(const char *str, PRUint32 max)

    34 {

    35     register const char *s;

    37     if( (const char *)0 == str ) return 0;

    38     for( s = str; max && *s; s++, max-- )

    39         ;

    41     return (PRUint32)(s - str);

    42 }

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