41 lines
1.0 KiB
C++
41 lines
1.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* Provides a safer sprintf for printing to fixed-size character arrays. */
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#ifndef mozilla_Sprintf_h_
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#define mozilla_Sprintf_h_
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#include <stdio.h>
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#include <stdarg.h>
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#include "mozilla/Assertions.h"
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#include "mozilla/Attributes.h"
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#ifdef __cplusplus
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template <size_t N>
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int VsprintfLiteral(char (&buffer)[N], const char* format, va_list args)
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{
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MOZ_ASSERT(format != buffer);
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int result = vsnprintf(buffer, N, format, args);
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buffer[N - 1] = '\0';
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return result;
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}
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template <size_t N>
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MOZ_FORMAT_PRINTF(2, 3)
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int SprintfLiteral(char (&buffer)[N], const char* format, ...)
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{
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va_list args;
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va_start(args, format);
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int result = VsprintfLiteral(buffer, format, args);
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va_end(args);
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return result;
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}
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#endif
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#endif /* mozilla_Sprintf_h_ */
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