tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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strdup.c (941B)

      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 "prmem.h"
      8 #include <string.h>
      9 
     10 PR_IMPLEMENT(char*)
     11 PL_strdup(const char* s) {
     12  char* rv;
     13  size_t n;
     14 
     15  if ((const char*)0 == s) {
     16    s = "";
     17  }
     18 
     19  n = strlen(s) + 1;
     20 
     21  rv = (char*)malloc(n);
     22  if ((char*)0 == rv) {
     23    return rv;
     24  }
     25 
     26  (void)memcpy(rv, s, n);
     27 
     28  return rv;
     29 }
     30 
     31 PR_IMPLEMENT(void)
     32 PL_strfree(char* s) { free(s); }
     33 
     34 PR_IMPLEMENT(char*)
     35 PL_strndup(const char* s, PRUint32 max) {
     36  char* rv;
     37  size_t l;
     38 
     39  if ((const char*)0 == s) {
     40    s = "";
     41  }
     42 
     43  l = PL_strnlen(s, max);
     44 
     45  rv = (char*)malloc(l + 1);
     46  if ((char*)0 == rv) {
     47    return rv;
     48  }
     49 
     50  (void)memcpy(rv, s, l);
     51  rv[l] = '\0';
     52 
     53  return rv;
     54 }