1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "DumpWriter.h"
18
19#include <android-base/stringprintf.h>
20#include <utils/String8.h>
21
22using android::base::StringAppendV;
23using android::String16;
24using android::Vector;
25
26namespace android {
27namespace net {
28
29namespace {
30
31const char kIndentString[] = "  ";
32const size_t kIndentStringLen = strlen(kIndentString);
33
34}  // namespace
35
36
37DumpWriter::DumpWriter(int fd) : mIndentLevel(0), mFd(fd) {}
38
39void DumpWriter::incIndent() {
40    if (mIndentLevel < 255) {
41        mIndentLevel++;
42    }
43}
44
45void DumpWriter::decIndent() {
46    if (mIndentLevel > 0) {
47        mIndentLevel--;
48    }
49}
50
51void DumpWriter::println(const std::string& line) {
52    if (!line.empty()) {
53        for (int i = 0; i < mIndentLevel; i++) {
54            write(mFd, kIndentString, kIndentStringLen);
55        }
56        write(mFd, line.c_str(), line.size());
57    }
58    write(mFd, "\n", 1);
59}
60
61void DumpWriter::println(const char* fmt, ...) {
62    std::string line;
63    va_list ap;
64    va_start(ap, fmt);
65    StringAppendV(&line, fmt, ap);
66    va_end(ap);
67    println(line);
68}
69
70}  // namespace net
71}  // namespace android
72