stringprintf.h

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/*
 * 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.
 */
 
#pragma once
 
#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.
 
// Returns a string corresponding to printf-like formatting of the arguments.
std::string StringPrintf(const char* fmt, ...) __attribute__((__format__(__printf__, 1, 2)));
 
// Appends a printf-like formatting of the arguments to 'dst'.
void StringAppendF(std::string* dst, const char* fmt, ...)
    __attribute__((__format__(__printf__, 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__(__printf__, 2, 0)));
 
}  // namespace base
}  // namespace android