The Tor Browser: nsprpub/lib/libc/src/strdup.c@141e0f1194b1

     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 "prmem.h"

     8 #include <string.h>

    10 PR_IMPLEMENT(char *)

    11 PL_strdup(const char *s)

    12 {

    13     char *rv;

    14     size_t n;

    16     if( (const char *)0 == s )

    17         s = "";

    19     n = strlen(s) + 1;

    21     rv = (char *)malloc(n);

    22     if( (char *)0 == rv ) return rv;

    24     (void)memcpy(rv, s, n);

    26     return rv;

    27 }

    29 PR_IMPLEMENT(void)

    30 PL_strfree(char *s)

    31 {

    32     free(s);

    33 }

    35 PR_IMPLEMENT(char *)

    36 PL_strndup(const char *s, PRUint32 max)

    37 {

    38     char *rv;

    39     size_t l;

    41     if( (const char *)0 == s )

    42         s = "";

    44     l = PL_strnlen(s, max);

    46     rv = (char *)malloc(l+1);

    47     if( (char *)0 == rv ) return rv;

    49     (void)memcpy(rv, s, l);

    50     rv[l] = '\0';

    52     return rv;

    53 }

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