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annotate dep/animia/src/player.cc @ 150:ffa535b6d630

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*: avoid usage of std::[pair,tuple] https://arne-mertz.de/2017/03/smelly-pair-tuple/ it's better to use real structures and such where variables are easily known... also apparently using [] on structs is actually valid? I had no idea.
author Paper <mrpapersonic@gmail.com>
date Tue, 14 Nov 2023 16:27:33 -0500
parents d8a61e7e2a36
children cdf79282d647
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138
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1 #include <map>
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2 #include <sstream>
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3 #include <string>
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4 #include <vector>
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5
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6 #include "animia/player.h"
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7 #include "animia/util.h"
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8
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9 namespace animia {
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10
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11 namespace internal::parser {
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12
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13 enum class State {
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14 ExpectPlayerName,
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15 ExpectSection,
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16 ExpectWindow,
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17 ExpectExecutable,
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18 ExpectStrategy,
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19 ExpectType,
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20 ExpectWindowTitle,
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21 };
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22
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23 size_t GetIndentation(const std::string& line) {
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24 return line.find_first_not_of('\t');
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25 }
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26
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27 bool HandleIndentation(const size_t current,
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28 const std::vector<Player>& players,
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29 State& state) {
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30 // Each state has a definitive expected indentation
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31 const auto expected = [&state]() -> size_t {
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32 switch (state) {
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33 default:
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34 case State::ExpectPlayerName:
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35 return 0;
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36 case State::ExpectSection:
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37 return 1;
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38 case State::ExpectWindow:
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39 case State::ExpectExecutable:
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40 case State::ExpectStrategy:
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41 case State::ExpectType:
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42 return 2;
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43 case State::ExpectWindowTitle:
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44 return 3;
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45 }
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46 }();
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47
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48 if (current > expected)
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49 return false; // Disallow excessive indentation
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50
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51 if (current < expected) {
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52 auto fix_state = [&]() {
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53 state = !current ? State::ExpectPlayerName : State::ExpectSection;
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54 };
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55 switch (state) {
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56 case State::ExpectWindow:
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57 if (players.back().windows.empty())
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58 return false;
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59 fix_state();
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60 break;
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61 case State::ExpectExecutable:
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62 if (players.back().executables.empty())
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63 return false;
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64 fix_state();
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65 break;
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66 case State::ExpectStrategy:
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67 if (players.back().strategies.empty())
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68 return false;
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69 fix_state();
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70 break;
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71 case State::ExpectType:
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72 fix_state();
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73 break;
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74 case State::ExpectWindowTitle:
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75 return false;
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76 }
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77 }
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78
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79 return true;
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80 }
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81
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82 bool HandleState(std::string& line, std::vector<Player>& players, State& state) {
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83 switch (state) {
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84 case State::ExpectPlayerName:
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85 players.push_back(Player());
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86 players.back().name = line;
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87 state = State::ExpectSection;
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88 break;
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89
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90 case State::ExpectSection: {
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91 static const std::map<std::string, State> sections = {
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92 {"windows", State::ExpectWindow},
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93 {"executables", State::ExpectExecutable},
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94 {"strategies", State::ExpectStrategy},
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95 {"type", State::ExpectType},
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96 };
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97 util::TrimRight(line, ":");
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98 const auto it = sections.find(line);
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99 if (it == sections.end())
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100 return false;
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101 state = it->second;
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102 break;
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103 }
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104
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105 case State::ExpectWindow:
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106 players.back().windows.push_back(line);
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107 break;
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108
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109 case State::ExpectExecutable:
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110 players.back().executables.push_back(line);
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111 break;
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112
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113 case State::ExpectStrategy: {
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114 static const std::map<std::string, Strategy> strategies = {
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115 {"window_title", Strategy::WindowTitle},
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116 {"open_files", Strategy::OpenFiles},
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117 {"ui_automation", Strategy::UiAutomation},
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118 };
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119 util::TrimRight(line, ":");
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120 const auto it = strategies.find(line);
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121 if (it == strategies.end())
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122 return false;
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123 const auto strategy = it->second;
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124 players.back().strategies.push_back(strategy);
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125 switch (strategy) {
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126 case Strategy::WindowTitle:
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127 state = State::ExpectWindowTitle;
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128 break;
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129 }
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130 break;
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131 }
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132
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133 case State::ExpectType: {
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134 static const std::map<std::string, PlayerType> types = {
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135 {"default", PlayerType::Default},
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136 {"web_browser", PlayerType::WebBrowser},
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137 };
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138 const auto it = types.find(line);
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139 if (it == types.end())
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140 return false;
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141 players.back().type = it->second;
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142 break;
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143 }
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144
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145 case State::ExpectWindowTitle:
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146 players.back().window_title_format = line;
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147 state = State::ExpectStrategy;
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148 break;
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149 }
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150
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151 return true;
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152 }
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153
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154 } // namespace internal::parser
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155
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156 ////////////////////////////////////////////////////////////////////////////////
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157
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158 bool ParsePlayersData(const std::string& data, std::vector<Player>& players) {
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159 if (data.empty())
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160 return false;
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161
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162 std::istringstream stream(data);
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163 std::string line;
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164 size_t indentation = 0;
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165 auto state = internal::parser::State::ExpectPlayerName;
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166
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167 while (std::getline(stream, line, '\n')) {
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168 if (line.empty())
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169 continue; // Ignore empty lines
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170
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171 indentation = internal::parser::GetIndentation(line);
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172
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173 internal::util::TrimLeft(line, "\t");
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174 internal::util::TrimRight(line, "\n\r");
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175
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176 if (line.empty() || line.front() == '#')
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177 continue; // Ignore empty lines and comments
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178
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179 if (!internal::parser::HandleIndentation(indentation, players, state))
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180 return false;
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181
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182 if (!internal::parser::HandleState(line, players, state))
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183 return false;
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184 }
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185
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186 return !players.empty();
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187 }
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188
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189 bool ParsePlayersFile(const std::string& path, std::vector<Player>& players) {
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190 std::string data;
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191
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192 if (!internal::util::ReadFile(path, data))
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193 return false;
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194
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195 return ParsePlayersData(data, players);
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196 }
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197
146
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198 } // namespace animia