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78 lines
1.8 KiB
78 lines
1.8 KiB
/* |
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* Copyright (C) 2018 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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#include "CodeWriter.h" |
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#ifdef LOG_TAG |
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#undef LOG_TAG |
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#endif |
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#define LOG_TAG "sysprop_gen" |
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#include <cstdarg> |
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#include <cstdio> |
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#include <vector> |
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#include <android-base/logging.h> |
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CodeWriter::CodeWriter(std::string indent) : indent_(std::move(indent)) { |
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} |
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void CodeWriter::Write(const char* format, ...) { |
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va_list ap, apc; |
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va_start(ap, format); |
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va_copy(apc, ap); |
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int size = std::vsnprintf(nullptr, 0, format, ap); |
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va_end(ap); |
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if (size < 0) { |
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va_end(apc); |
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PLOG(FATAL) << "vsnprintf failed"; |
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} |
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std::vector<char> buf(size + 1); |
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if (std::vsnprintf(buf.data(), size + 1, format, apc) < 0) { |
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va_end(apc); |
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PLOG(FATAL) << "vsnprintf failed"; |
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} |
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va_end(apc); |
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for (int i = 0; i < size; ++i) { |
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char ch = buf[i]; |
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if (ch == '\n') { |
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start_of_line_ = true; |
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} else { |
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if (start_of_line_) { |
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for (int j = 0; j < indent_level_; ++j) { |
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code_ += indent_; |
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} |
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start_of_line_ = false; |
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} |
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} |
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code_.push_back(ch); |
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} |
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} |
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void CodeWriter::Indent() { |
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++indent_level_; |
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} |
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void CodeWriter::Dedent() { |
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if (indent_level_ == 0) { |
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LOG(FATAL) << "Dedent failed: indent level is already 0"; |
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} |
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--indent_level_; |
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}
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