1/* 2 * Copyright (C) 2017 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#ifndef FRAMEWORK_NATIVE_CMDS_LSHAL_TEXT_TABLE_H_ 18#define FRAMEWORK_NATIVE_CMDS_LSHAL_TEXT_TABLE_H_ 19 20#include <iostream> 21#include <string> 22#include <vector> 23 24namespace android { 25namespace lshal { 26 27// An element in TextTable. This is either an actual row (an array of cells 28// in this row), or a string of explanatory text. 29// To see if this is an actual row, test fields().empty(). 30class TextTableRow { 31public: 32 // An empty line. 33 TextTableRow() {} 34 35 // A row of cells. 36 TextTableRow(std::vector<std::string>&& v) : mFields(std::move(v)) {} 37 38 // A single comment string. 39 TextTableRow(std::string&& s) : mLine(std::move(s)) {} 40 TextTableRow(const std::string& s) : mLine(s) {} 41 42 // Whether this row is an actual row of cells. 43 bool isRow() const { return !fields().empty(); } 44 45 // Get all cells. 46 const std::vector<std::string>& fields() const { return mFields; } 47 48 // Get the single comment string. 49 const std::string& line() const { return mLine; } 50 51private: 52 std::vector<std::string> mFields; 53 std::string mLine; 54}; 55 56// A TextTable is a 2D array of strings. 57class TextTable { 58public: 59 60 // Add a TextTableRow. 61 void add() { mTable.emplace_back(); } 62 void add(std::vector<std::string>&& v) { 63 computeWidth(v); 64 mTable.emplace_back(std::move(v)); 65 } 66 void add(const std::string& s) { mTable.emplace_back(s); } 67 void add(std::string&& s) { mTable.emplace_back(std::move(s)); } 68 69 void addAll(TextTable&& other); 70 71 // Prints the table to out, with column widths adjusted appropriately according 72 // to the content. 73 void dump(std::ostream& out) const; 74 75private: 76 void computeWidth(const std::vector<std::string>& v); 77 std::vector<size_t> mWidths; 78 std::vector<TextTableRow> mTable; 79}; 80 81} // namespace lshal 82} // namespace android 83 84#endif // FRAMEWORK_NATIVE_CMDS_LSHAL_TEXT_TABLE_H_ 85