57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
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/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_BASE_STRINGPRINTF_H
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#define ANDROID_BASE_STRINGPRINTF_H
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#include <stdarg.h>
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#include <string>
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namespace android {
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namespace base {
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// These printf-like functions are implemented in terms of vsnprintf, so they
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// use the same attribute for compile-time format string checking. On Windows,
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// if the mingw version of vsnprintf is used, use `gnu_printf' which allows z
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// in %zd and PRIu64 (and related) to be recognized by the compile-time
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// checking.
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#define FORMAT_ARCHETYPE __printf__
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#ifdef __USE_MINGW_ANSI_STDIO
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#if __USE_MINGW_ANSI_STDIO
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#undef FORMAT_ARCHETYPE
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#define FORMAT_ARCHETYPE gnu_printf
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#endif
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#endif
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// Returns a string corresponding to printf-like formatting of the arguments.
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std::string StringPrintf(const char* fmt, ...)
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__attribute__((__format__(FORMAT_ARCHETYPE, 1, 2)));
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// Appends a printf-like formatting of the arguments to 'dst'.
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void StringAppendF(std::string* dst, const char* fmt, ...)
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__attribute__((__format__(FORMAT_ARCHETYPE, 2, 3)));
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// Appends a printf-like formatting of the arguments to 'dst'.
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void StringAppendV(std::string* dst, const char* format, va_list ap)
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__attribute__((__format__(FORMAT_ARCHETYPE, 2, 0)));
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#undef FORMAT_ARCHETYPE
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} // namespace base
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} // namespace android
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#endif // ANDROID_BASE_STRINGPRINTF_H
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