Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : /* Provides a safer sprintf for printing to fixed-size character arrays. */
       8             : 
       9             : #ifndef mozilla_Sprintf_h_
      10             : #define mozilla_Sprintf_h_
      11             : 
      12             : #include <stdio.h>
      13             : #include <stdarg.h>
      14             : 
      15             : #include "mozilla/Assertions.h"
      16             : #include "mozilla/Attributes.h"
      17             : 
      18             : #ifdef __cplusplus
      19             : 
      20             : template <size_t N>
      21             : MOZ_FORMAT_PRINTF(2, 0)
      22         826 : int VsprintfLiteral(char (&buffer)[N], const char* format, va_list args)
      23             : {
      24         826 :     MOZ_ASSERT(format != buffer);
      25         826 :     int result = vsnprintf(buffer, N, format, args);
      26         826 :     buffer[N - 1] = '\0';
      27         826 :     return result;
      28             : }
      29             : 
      30             : template <size_t N>
      31             : MOZ_FORMAT_PRINTF(2, 3)
      32         826 : int SprintfLiteral(char (&buffer)[N], const char* format, ...)
      33             : {
      34             :   va_list args;
      35         826 :   va_start(args, format);
      36         826 :   int result = VsprintfLiteral(buffer, format, args);
      37         826 :   va_end(args);
      38         826 :   return result;
      39             : }
      40             : 
      41             : #endif
      42             : #endif  /* mozilla_Sprintf_h_ */