Mercurial > libanimone

annotate src/player.cc @ 30:a76e55e098d1

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util: rewrite functions in C-ish there are C++ bindings still put in place. the code should be valid C, except for the use of <regex>, which ought to go anyway. eventually I'll actually *test* this stuff aside from the TrimRight crap
author Paper <paper@tflc.us>
date Sun, 09 Feb 2025 23:18:57 -0500
parents 973734ebd2be
children 93224b26a0ee
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Paper <paper@paper.us.eu.org>
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1 #include "animone/player.h"
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2 #include "animone/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 #include <optional>
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9
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10 #include <iostream>
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11
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12 namespace animone {
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13
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14 namespace internal::parser {
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15
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16 struct State {
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17 enum class Name {
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18 ExpectPlayerName,
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Paper <paper@paper.us.eu.org>
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19 ExpectSection,
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Paper <paper@paper.us.eu.org>
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20 ExpectWindowPlatform,
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21 ExpectExecutablePlatform,
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22 ExpectWindow,
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23 ExpectExecutable,
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24 ExpectStrategy,
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Paper <paper@paper.us.eu.org>
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25 ExpectType,
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26 ExpectWindowTitle,
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27 };
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28
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29 Name state = Name::ExpectPlayerName;
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30 WindowPlatform window_platform = WindowPlatform::Unknown;
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31 ExecutablePlatform executable_platform = ExecutablePlatform::Unknown;
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32 };
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33
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34 size_t GetIndentation(const std::string& line) {
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35 return line.find_first_not_of('\t');
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36 }
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37
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38 bool HandleIndentation(const size_t current, const std::vector<Player>& players, State& state) {
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39 // Each state has a definitive expected indentation
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40 const auto expected = [](const State::Name& state) -> size_t {
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41 switch (state) {
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42 default:
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43 case State::Name::ExpectPlayerName: return 0;
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44 case State::Name::ExpectSection: return 1;
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45 case State::Name::ExpectWindowPlatform:
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46 case State::Name::ExpectExecutablePlatform:
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47 case State::Name::ExpectStrategy:
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48 case State::Name::ExpectType: return 2;
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49 case State::Name::ExpectWindow:
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50 case State::Name::ExpectExecutable:
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51 case State::Name::ExpectWindowTitle: return 3;
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52 }
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53 }(state.state);
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54
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55 if (current > expected) {
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56 std::cerr << "animone: excessive indentation found" << std::endl;
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57 return false; // Disallow excessive indentation
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58 }
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59
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60 if (current < expected) {
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61 const std::optional<State::Name> st = [current, state]() -> std::optional<State::Name> {
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62 switch (current) {
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63 case 0: return State::Name::ExpectPlayerName;
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64 default:
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65 case 1: return State::Name::ExpectSection;
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66 case 2:
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67 switch (state.state) {
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68 case State::Name::ExpectWindow: return State::Name::ExpectWindowPlatform;
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69 case State::Name::ExpectExecutable: return State::Name::ExpectExecutablePlatform;
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70 default: return std::nullopt;
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71 }
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72 }
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73 }();
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74 if (!st.has_value())
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75 return false;
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76
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77 switch (state.state) {
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78 case State::Name::ExpectWindow:
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79 if (players.back().windows.empty())
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80 return false;
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81 state.state = st.value();
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82 break;
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83 case State::Name::ExpectExecutable:
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84 if (players.back().executables.empty())
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85 return false;
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86 state.state = st.value();
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87 break;
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88 case State::Name::ExpectStrategy:
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89 if (players.back().strategies.empty())
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90 return false;
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91 state.state = st.value();
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92 break;
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93 case State::Name::ExpectType:
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94 state.state = st.value();
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95 break;
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96 case State::Name::ExpectWindowTitle:
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97 return false;
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98 }
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99 }
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100
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101 return true;
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102 }
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103
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104 bool HandleState(std::string& line, std::vector<Player>& players, State& state) {
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105 switch (state.state) {
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106 case State::Name::ExpectPlayerName:
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107 players.push_back(Player());
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108 players.back().name = line;
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109 state.state = State::Name::ExpectSection;
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110 break;
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111
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112 case State::Name::ExpectSection: {
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113 static const std::map<std::string, State::Name> sections = {
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114 {"windows", State::Name::ExpectWindowPlatform},
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115 {"executables", State::Name::ExpectExecutablePlatform},
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116 {"strategies", State::Name::ExpectStrategy },
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117 {"type", State::Name::ExpectType },
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118 };
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119 util::TrimRight(line, ":");
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120 const auto it = sections.find(line);
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121 if (it == sections.end())
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122 return false;
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123 state.state = it->second;
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124 break;
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125 }
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126
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127 case State::Name::ExpectWindowPlatform: {
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128 static const std::map<std::string, WindowPlatform> platforms = {
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129 {"quartz", WindowPlatform::Quartz},
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130 {"win32", WindowPlatform::Win32},
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131 {"x11", WindowPlatform::X11},
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132 };
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133 util::TrimRight(line, ":");
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134 const auto it = platforms.find(line);
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135 if (it == platforms.end())
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136 return false;
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137 state.state = State::Name::ExpectWindow;
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138 state.window_platform = it->second;
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139 break;
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140 }
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141
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142 case State::Name::ExpectExecutablePlatform: {
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143 static const std::map<std::string, ExecutablePlatform> platforms = {
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144 {"posix", ExecutablePlatform::Posix},
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145 {"win32", ExecutablePlatform::Win32},
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146 {"macosx", ExecutablePlatform::Xnu},
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147 };
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148 util::TrimRight(line, ":");
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149 const auto it = platforms.find(line);
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150 if (it == platforms.end())
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151 return false;
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152 state.state = State::Name::ExpectExecutable;
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153 state.executable_platform = it->second;
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154 break;
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155 }
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156
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157 case State::Name::ExpectWindow: players.back().windows[state.window_platform].push_back(line); break;
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158
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159 case State::Name::ExpectExecutable: players.back().executables[state.executable_platform].push_back(line); break;
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160
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161 case State::Name::ExpectStrategy: {
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162 static const std::map<std::string, Strategy> strategies = {
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163 {"window_title", Strategy::WindowTitle },
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164 {"open_files", Strategy::OpenFiles },
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165 {"ui_automation", Strategy::UiAutomation},
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166 };
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167 util::TrimRight(line, ":");
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168 const auto it = strategies.find(line);
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169 if (it == strategies.end())
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170 return false;
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171 const auto strategy = it->second;
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172 players.back().strategies.push_back(strategy);
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173 switch (strategy) {
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174 case Strategy::WindowTitle: state.state = State::Name::ExpectWindowTitle; break;
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175 }
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176 break;
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177 }
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178
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179 case State::Name::ExpectType: {
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180 static const std::map<std::string, PlayerType> types = {
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181 {"default", PlayerType::Default },
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182 {"web_browser", PlayerType::WebBrowser},
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183 };
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184 const auto it = types.find(line);
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185 if (it == types.end())
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186 return false;
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187 players.back().type = it->second;
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188 break;
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189 }
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190
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191 case State::Name::ExpectWindowTitle:
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192 players.back().window_title_format = line;
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193 state.state = State::Name::ExpectStrategy;
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194 break;
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195 }
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196
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197 return true;
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198 }
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199
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200 } // namespace internal::parser
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201
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202 ////////////////////////////////////////////////////////////////////////////////
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203
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204 bool ParsePlayersData(const std::string& data, std::vector<Player>& players) {
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205 if (data.empty())
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206 return false;
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207
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208 std::istringstream stream(data);
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209 std::string line;
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210 size_t indentation = 0;
21
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211 internal::parser::State state;
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212
21
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213 int ln = 1;
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214 for (; std::getline(stream, line, '\n'); ln++) {
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215 if (line.empty())
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216 continue; // Ignore empty lines
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217
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218 indentation = internal::parser::GetIndentation(line);
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219
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220 internal::util::TrimLeft(line, "\t");
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221 internal::util::TrimRight(line, "\n\r");
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222
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223 if (line.empty() || line.front() == '#')
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224 continue; // Ignore empty lines and comments
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225
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226 if (!internal::parser::HandleIndentation(indentation, players, state)) {
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227 std::cerr << "animone: indentation: failed on line " << ln << std::endl;
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228 return false;
21
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229 }
14
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230
21
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231 if (!internal::parser::HandleState(line, players, state)) {
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232 std::cerr << "animone: state: failed on line " << ln << std::endl;
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233 return false;
21
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234 }
14
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235 }
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236
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237 return !players.empty();
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238 }
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239
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240 bool ParsePlayersFile(const std::string& path, std::vector<Player>& players) {
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241 std::string data;
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242
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243 if (!internal::util::ReadFile(path, data))
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244 return false;
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245
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246 return ParsePlayersData(data, players);
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247 }
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248
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249 } // namespace animone