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 22 using android::base::StringAppendV; 23 using android::String16; 24 using android::Vector; 25 26 namespace android { 27 namespace net { 28 29 namespace { 30 31 const char kIndentString[] = " "; 32 const size_t kIndentStringLen = strlen(kIndentString); 33 34 } // namespace 35 36 37 DumpWriter::DumpWriter(int fd) : mIndentLevel(0), mFd(fd) {} 38 39 void DumpWriter::incIndent() { 40 if (mIndentLevel < 255) { 41 mIndentLevel++; 42 } 43 } 44 45 void DumpWriter::decIndent() { 46 if (mIndentLevel > 0) { 47 mIndentLevel--; 48 } 49 } 50 51 void 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 61 void 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
