From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- mfbt/Sprintf.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 mfbt/Sprintf.h (limited to 'mfbt/Sprintf.h') diff --git a/mfbt/Sprintf.h b/mfbt/Sprintf.h new file mode 100644 index 000000000..e0be271e5 --- /dev/null +++ b/mfbt/Sprintf.h @@ -0,0 +1,41 @@ +/* -*- 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 +#include + +#include "mozilla/Assertions.h" +#include "mozilla/Attributes.h" + +#ifdef __cplusplus + +template +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 +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_ */ -- cgit v1.2.3