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annotate dep/animia/src/player.cc @ 198:bc1ae1810855

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dep/animia: switch from using classes to global functions the old idea was ok, but sort of hackish; this method doesn't use classes at all, and this way (especially important!) we can do wayland stuff AND x11 at the same time, which wasn't really possible without stupid workarounds in the other method
author Paper <mrpapersonic@gmail.com>
date Sun, 24 Dec 2023 02:59:42 -0500
parents cdf79282d647
children
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1 #include "animia/player.h"
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2 #include "animia/util.h"
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3
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4 #include <map>
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5 #include <sstream>
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6 #include <string>
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7 #include <vector>
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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, const std::vector<Player>& players, State& state) {
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28 // Each state has a definitive expected indentation
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29 const auto expected = [&state]() -> size_t {
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30 switch (state) {
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31 default:
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32 case State::ExpectPlayerName: return 0;
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33 case State::ExpectSection: return 1;
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34 case State::ExpectWindow:
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35 case State::ExpectExecutable:
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36 case State::ExpectStrategy:
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37 case State::ExpectType: return 2;
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38 case State::ExpectWindowTitle: return 3;
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39 }
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40 }();
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41
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42 if (current > expected)
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43 return false; // Disallow excessive indentation
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44
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45 if (current < expected) {
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46 auto fix_state = [&]() { state = !current ? State::ExpectPlayerName : State::ExpectSection; };
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47 switch (state) {
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48 case State::ExpectWindow:
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49 if (players.back().windows.empty())
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50 return false;
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51 fix_state();
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52 break;
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53 case State::ExpectExecutable:
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54 if (players.back().executables.empty())
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55 return false;
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56 fix_state();
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57 break;
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58 case State::ExpectStrategy:
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59 if (players.back().strategies.empty())
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60 return false;
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61 fix_state();
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62 break;
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63 case State::ExpectType: fix_state(); break;
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64 case State::ExpectWindowTitle: return false;
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65 }
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66 }
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67
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68 return true;
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69 }
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70
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71 bool HandleState(std::string& line, std::vector<Player>& players, State& state) {
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72 switch (state) {
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73 case State::ExpectPlayerName:
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74 players.push_back(Player());
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75 players.back().name = line;
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76 state = State::ExpectSection;
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77 break;
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78
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79 case State::ExpectSection: {
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80 static const std::map<std::string, State> sections = {
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81 {"windows", State::ExpectWindow },
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82 {"executables", State::ExpectExecutable},
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83 {"strategies", State::ExpectStrategy },
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84 {"type", State::ExpectType },
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85 };
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86 util::TrimRight(line, ":");
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87 const auto it = sections.find(line);
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88 if (it == sections.end())
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89 return false;
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90 state = it->second;
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91 break;
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92 }
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93
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94 case State::ExpectWindow: players.back().windows.push_back(line); break;
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95
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96 case State::ExpectExecutable: players.back().executables.push_back(line); break;
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97
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98 case State::ExpectStrategy: {
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99 static const std::map<std::string, Strategy> strategies = {
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100 {"window_title", Strategy::WindowTitle },
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101 {"open_files", Strategy::OpenFiles },
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102 {"ui_automation", Strategy::UiAutomation},
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103 };
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104 util::TrimRight(line, ":");
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105 const auto it = strategies.find(line);
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106 if (it == strategies.end())
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107 return false;
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108 const auto strategy = it->second;
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109 players.back().strategies.push_back(strategy);
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110 switch (strategy) {
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111 case Strategy::WindowTitle: state = State::ExpectWindowTitle; break;
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112 }
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113 break;
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114 }
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115
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116 case State::ExpectType: {
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117 static const std::map<std::string, PlayerType> types = {
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118 {"default", PlayerType::Default },
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119 {"web_browser", PlayerType::WebBrowser},
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120 };
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121 const auto it = types.find(line);
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122 if (it == types.end())
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123 return false;
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124 players.back().type = it->second;
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125 break;
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126 }
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127
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128 case State::ExpectWindowTitle:
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129 players.back().window_title_format = line;
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130 state = State::ExpectStrategy;
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131 break;
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132 }
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133
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134 return true;
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135 }
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136
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137 } // namespace internal::parser
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138
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139 ////////////////////////////////////////////////////////////////////////////////
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140
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141 bool ParsePlayersData(const std::string& data, std::vector<Player>& players) {
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142 if (data.empty())
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143 return false;
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144
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145 std::istringstream stream(data);
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146 std::string line;
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147 size_t indentation = 0;
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148 auto state = internal::parser::State::ExpectPlayerName;
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149
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150 while (std::getline(stream, line, '\n')) {
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151 if (line.empty())
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152 continue; // Ignore empty lines
138
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153
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154 indentation = internal::parser::GetIndentation(line);
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155
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156 internal::util::TrimLeft(line, "\t");
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157 internal::util::TrimRight(line, "\n\r");
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158
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159 if (line.empty() || line.front() == '#')
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160 continue; // Ignore empty lines and comments
138
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161
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162 if (!internal::parser::HandleIndentation(indentation, players, state))
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163 return false;
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164
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165 if (!internal::parser::HandleState(line, players, state))
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166 return false;
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167 }
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168
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169 return !players.empty();
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170 }
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171
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172 bool ParsePlayersFile(const std::string& path, std::vector<Player>& players) {
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173 std::string data;
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174
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175 if (!internal::util::ReadFile(path, data))
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176 return false;
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177
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178 return ParsePlayersData(data, players);
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179 }
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180
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181 } // namespace animia