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