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