mfbt/Sprintf.h
author Markus Stange <mstange@themasta.com>
Tue, 16 Apr 2019 17:03:14 +0000
changeset 523250 9b2635dc41a478fa26dd8cf2bd428e1974e4d880
parent 505383 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1544478 - Add a reftest. r=mattwoodrow a=pascalc The reftests in the webm-video directory are currently only run in non-e10s mode (bug 1544849), so at the moment, this test only provides coverage on Linux 32bit debug builds and Android Fennec builds. Differential Revision: https://phabricator.services.mozilla.com/D27601

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */

/* Provides a safer sprintf for printing to fixed-size character arrays. */

#ifndef mozilla_Sprintf_h_
#define mozilla_Sprintf_h_

#include <stdio.h>
#include <stdarg.h>

#include "mozilla/Assertions.h"
#include "mozilla/Attributes.h"

#ifdef __cplusplus

template <size_t N>
MOZ_FORMAT_PRINTF(2, 0)
int VsprintfLiteral(char (&buffer)[N], const char* format, va_list args) {
  MOZ_ASSERT(format != buffer);
  int result = vsnprintf(buffer, N, format, args);
  buffer[N - 1] = '\0';
  return result;
}

template <size_t N>
MOZ_FORMAT_PRINTF(2, 3)
int SprintfLiteral(char (&buffer)[N], const char* format, ...) {
  va_list args;
  va_start(args, format);
  int result = VsprintfLiteral(buffer, format, args);
  va_end(args);
  return result;
}

#endif
#endif /* mozilla_Sprintf_h_ */