1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/xpcom/string/public/nsPrintfCString.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,41 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef nsPrintfCString_h___
1.10 +#define nsPrintfCString_h___
1.11 +
1.12 +#include "nsString.h"
1.13 +
1.14 +/**
1.15 + * nsPrintfCString lets you create a nsCString using a printf-style format
1.16 + * string. For example:
1.17 + *
1.18 + * NS_WARNING(nsPrintfCString("Unexpected value: %f", 13.917).get());
1.19 + *
1.20 + * nsPrintfCString has a small built-in auto-buffer. For larger strings, it
1.21 + * will allocate on the heap.
1.22 + *
1.23 + * See also nsCString::AppendPrintf().
1.24 + */
1.25 +class nsPrintfCString : public nsFixedCString
1.26 +{
1.27 + typedef nsCString string_type;
1.28 +
1.29 +public:
1.30 + explicit nsPrintfCString( const char_type* format, ... )
1.31 + : nsFixedCString(mLocalBuffer, kLocalBufferSize, 0)
1.32 + {
1.33 + va_list ap;
1.34 + va_start(ap, format);
1.35 + AppendPrintf(format, ap);
1.36 + va_end(ap);
1.37 + }
1.38 +
1.39 +private:
1.40 + static const uint32_t kLocalBufferSize = 16;
1.41 + char_type mLocalBuffer[kLocalBufferSize];
1.42 +};
1.43 +
1.44 +#endif // !defined(nsPrintfCString_h___)
