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/*
* Copyright (C) 2015, 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 <stdio.h>
#include <functional>
#include <memory>
#include <ostream>
#include <string>
#include <utility>
#include <android-base/stringprintf.h>
namespace android {
namespace aidl {
class CodeWriter;
using CodeWriterPtr = std::unique_ptr<CodeWriter>;
class CodeWriter {
public:
// Get a CodeWriter that writes to a file. When filename is "-",
// it is written to stdout.
static CodeWriterPtr ForFile(const std::string& filename);
// Get a CodeWriter that writes to a string buffer.
// The buffer gets updated only after Close() is called or the CodeWriter
// is deleted -- much like a real file.
static CodeWriterPtr ForString(std::string* buf);
// Write a formatted string to this writer in the usual printf sense.
// Returns false on error.
template <typename... Args>
bool Write(const char* format, Args... args) __attribute__((format(printf, 2, 0))) {
std::string formatted;
android::base::StringAppendF(&formatted, format, args...);
return WriteString(formatted);
}
template <>
bool Write(const char* str) {
return WriteString(str);
}
virtual bool WriteString(const std::string&);
void Indent();
void Dedent();
virtual bool Close();
virtual ~CodeWriter() = default;
CodeWriter() = default;
CodeWriter& operator<<(const char* s);
CodeWriter& operator<<(const std::string& str);
private:
CodeWriter(std::unique_ptr<std::ostream> ostream);
std::string ApplyIndent(const std::string& str);
const std::unique_ptr<std::ostream> ostream_;
int indent_level_ {0};
bool start_of_line_ {true};
};
std::string QuotedEscape(const std::string& str);
} // namespace aidl
} // namespace android
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