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73 lines
1.9 KiB
73 lines
1.9 KiB
/*
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* Copyright (C) 2016 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 "netdutils/DumpWriter.h"
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#include <unistd.h>
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#include <limits>
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#include <android-base/stringprintf.h>
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#include <utils/String8.h>
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using android::base::StringAppendV;
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namespace android {
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namespace netdutils {
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namespace {
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const char kIndentString[] = " ";
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const size_t kIndentStringLen = strlen(kIndentString);
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} // namespace
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DumpWriter::DumpWriter(int fd) : mIndentLevel(0), mFd(fd) {}
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void DumpWriter::incIndent() {
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if (mIndentLevel < std::numeric_limits<decltype(mIndentLevel)>::max()) {
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mIndentLevel++;
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}
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}
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void DumpWriter::decIndent() {
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if (mIndentLevel > std::numeric_limits<decltype(mIndentLevel)>::min()) {
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mIndentLevel--;
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}
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}
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void DumpWriter::println(const std::string& line) {
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if (!line.empty()) {
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for (int i = 0; i < mIndentLevel; i++) {
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::write(mFd, kIndentString, kIndentStringLen);
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}
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::write(mFd, line.c_str(), line.size());
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}
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::write(mFd, "\n", 1);
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}
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// NOLINTNEXTLINE(cert-dcl50-cpp): Grandfathered C-style variadic function.
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void DumpWriter::println(const char* fmt, ...) {
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std::string line;
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va_list ap;
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va_start(ap, fmt);
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StringAppendV(&line, fmt, ap);
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va_end(ap);
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println(line);
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}
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} // namespace netdutils
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} // namespace android
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