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/*
* Copyright (C) 2012 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 ART_SRC_INDENTER_H_
#define ART_SRC_INDENTER_H_
#include "base/macros.h"
#include <streambuf>
const char kIndentChar =' ';
const size_t kIndentBy1Count = 2;
class Indenter : public std::streambuf {
public:
Indenter(std::streambuf* out, char text, size_t count)
: indent_next_(true), out_sbuf_(out), text_(text), count_(count) {}
private:
int_type overflow(int_type c) {
if (c != std::char_traits<char>::eof()) {
if (indent_next_) {
for (size_t i = 0; i < count_; ++i) {
out_sbuf_->sputc(text_);
}
}
out_sbuf_->sputc(c);
indent_next_ = (c == '\n');
}
return std::char_traits<char>::not_eof(c);
}
int sync() {
return out_sbuf_->pubsync();
}
bool indent_next_;
// Buffer to write output to.
std::streambuf* const out_sbuf_;
// Text output as indent.
const char text_;
// Number of times text is output.
const size_t count_;
DISALLOW_COPY_AND_ASSIGN(Indenter);
};
#endif // ART_SRC_INDENTER_H_
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