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annotate dep/animia/src/strategist.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 ff0061e75f0f
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1 #include <regex>
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2
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3 #include "animia.h"
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4 #include "animia/fd.h"
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5 #include "animia/strategies.h"
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6 #include "animia/util.h"
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7
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8 namespace animia::internal {
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9
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10 class Strategist {
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11 public:
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12 Strategist(Result& result) : result_(result) {}
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13
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14 bool ApplyStrategies();
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15
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16 private:
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17 bool AddMedia(const MediaInfo media_information);
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18
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19 bool ApplyOpenFilesStrategy();
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20 bool ApplyWindowTitleStrategy();
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21
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22 Result& result_;
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23 };
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24
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25 bool Strategist::ApplyStrategies() {
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26 bool success = false;
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27
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28 switch (result_.type) {
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29 case ResultType::Process: success |= ApplyOpenFilesStrategy(); break;
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30 case ResultType::Window: success |= ApplyWindowTitleStrategy(); break;
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31 }
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32
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33 return success;
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34 }
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35
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36 bool ApplyStrategies(std::vector<Result>& results) {
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37 bool success = false;
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38
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39 for (auto& result : results) {
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40 Strategist strategist(result);
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41 success |= strategist.ApplyStrategies();
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42 }
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43
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44 return success;
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45 }
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46
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47 ////////////////////////////////////////////////////////////////////////////////
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48
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49 static bool ApplyWindowTitleFormat(const std::string& format, std::string& title) {
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50 if (format.empty())
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51 return false;
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52
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53 const std::regex pattern(format);
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54 std::smatch match;
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55 std::regex_match(title, match, pattern);
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56
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57 // Use the first non-empty match result, because the regular expression may
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58 // contain multiple sub-expressions.
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59 for (size_t i = 1; i < match.size(); ++i) {
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60 if (!match.str(i).empty()) {
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61 title = match.str(i);
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62 return true;
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63 }
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64 }
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65
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66 // Results are empty, but the match was successful
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67 if (!match.empty()) {
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68 title.clear();
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69 return true;
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70 }
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71
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72 return true;
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73 }
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74
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75 static MediaInfoType InferMediaInformationType(const std::string& str) {
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76 const std::regex path_pattern(R"(^(?:[A-Za-z]:[/\\]|\\\\)[^<>:"/\\|?*]+)");
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77 return (std::regex_search(str, path_pattern)) ? MediaInfoType::File : MediaInfoType::Unknown;
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78 }
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79
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80 bool Strategist::ApplyWindowTitleStrategy() {
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81 auto title = result_.window.text;
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82 ApplyWindowTitleFormat(result_.player.window_title_format, title);
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83
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84 return AddMedia({InferMediaInformationType(title), title});
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85 }
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86
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87 bool Strategist::ApplyOpenFilesStrategy() {
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88 bool success = false;
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89
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90 const std::set<pid_t> pids{result_.process.pid};
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91
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92 auto open_file_proc = [&](const OpenFile& file) -> bool {
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93 success |= AddMedia({MediaInfoType::File, file.path});
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94 return true;
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95 };
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96
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97 EnumerateOpenFiles(pids, open_file_proc);
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98
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99 return success;
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100 }
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101
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102 ////////////////////////////////////////////////////////////////////////////////
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103
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104 bool Strategist::AddMedia(const MediaInfo media_information) {
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105 if (media_information.value.empty())
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106 return false;
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107
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108 Media media;
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109 media.information.push_back(media_information);
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110 result_.media.push_back(std::move(media));
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111
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112 return true;
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113 }
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114
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115 } // namespace animia::internal