| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #include "ConfigFileReader.h" | ||
| 2 | #include <filesystem> | ||
| 3 | #include <cstdlib> | ||
| 4 | #include <sstream> | ||
| 5 | |||
| 6 | namespace iguana { | ||
| 7 | |||
| 8 | 45 | ConfigFileReader::ConfigFileReader(std::string_view name) | |
| 9 | 45 | : Object(name) | |
| 10 | { | ||
| 11 | // the algorithms need to know where the config files are; | ||
| 12 | // first, add config files from installation prefix; since this | ||
| 13 | // is added first, it's the lowest priority in the configuration | ||
| 14 | // search path | ||
| 15 |
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45 | AddDirectory(GetConfigInstallationPrefix()); |
| 16 | // next, add `IGUANA_CONFIG_PATH` paths, which provides: | ||
| 17 | // - user override of the configuration path(s) | ||
| 18 | // - a fallback, if `GetConfigInstallationPrefix` is wrong, which happens | ||
| 19 | // if the Iguana installation is relocated | ||
| 20 | 45 | auto user_paths_env_var = std::getenv("IGUANA_CONFIG_PATH"); | |
| 21 |
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45 | if(user_paths_env_var != nullptr) { |
| 22 | ✗ | std::istringstream user_paths_stream(user_paths_env_var); | |
| 23 | std::string user_path_token; | ||
| 24 | decltype(m_directories) user_paths; | ||
| 25 | ✗ | while(getline(user_paths_stream, user_path_token, ':')) // tokenize `IGUANA_CONFIG_PATH` | |
| 26 | ✗ | user_paths.push_front(user_path_token); | |
| 27 | ✗ | for(auto const& user_path : user_paths) // add the paths in the correct order | |
| 28 | ✗ | AddDirectory(user_path); | |
| 29 | // after these default paths have been added, the user | ||
| 30 | // may still override by calling `AddDirectory` etc. themselves | ||
| 31 | ✗ | } | |
| 32 | 45 | } | |
| 33 | |||
| 34 | 45 | std::string ConfigFileReader::GetConfigInstallationPrefix() | |
| 35 | { | ||
| 36 | 45 | return IGUANA_ETCDIR; | |
| 37 | } | ||
| 38 | |||
| 39 | 90 | void ConfigFileReader::AddDirectory(std::string const& dir) | |
| 40 | { | ||
| 41 |
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90 | if(dir == "") |
| 42 | return; // handle unset directory name | ||
| 43 |
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54 | m_log->Trace("Add directory {}", dir); |
| 44 | 54 | m_directories.push_front(dir); | |
| 45 | } | ||
| 46 | |||
| 47 | 87 | void ConfigFileReader::AddFile(std::string const& name) | |
| 48 | { | ||
| 49 |
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87 | if(name == "") |
| 50 | 36 | return; // handle unset file name | |
| 51 | 51 | auto full_name = FindFile(name); | |
| 52 |
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48 | m_log->Trace(" ===> Add file {}", full_name); |
| 53 |
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48 | m_files.push_front(full_name); |
| 54 | } | ||
| 55 | |||
| 56 | 6 | void ConfigFileReader::PrintDirectories(Logger::Level const level) | |
| 57 | { | ||
| 58 |
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6 | if(m_log->GetLevel() <= level) { |
| 59 | 6 | m_log->Print(level, "{:=^60}", " Configuration file search path order: "); | |
| 60 | 6 | m_log->Print(level, " - ./"); | |
| 61 |
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18 | for(auto const& dir : m_directories) |
| 62 |
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24 | m_log->Print(level, " - {}", dir); |
| 63 | 6 | m_log->Print(level, "{:=^60}", ""); | |
| 64 | } | ||
| 65 | 6 | } | |
| 66 | |||
| 67 | 51 | std::string ConfigFileReader::FindFile(std::string const& name) | |
| 68 | { | ||
| 69 |
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51 | if(name == "") |
| 70 | ✗ | return ""; // handle unset file name | |
| 71 |
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51 | m_log->Trace("Searching for file '{}' in:", name); |
| 72 | // first try `./` or assume `name` is a relative or absolute path + filename | ||
| 73 |
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102 | auto found_local = std::filesystem::exists(name); |
| 74 |
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51 | m_log->Trace(" - ./{}", found_local ? " - FOUND" : ""); |
| 75 |
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51 | if(found_local) |
| 76 | return name; | ||
| 77 | // then search each entry of `m_directories` | ||
| 78 |
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61 | for(auto const& dir : m_directories) { |
| 79 | 58 | std::string filename = dir + "/" + name; | |
| 80 |
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116 | auto found = std::filesystem::exists(filename); |
| 81 |
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116 | m_log->Trace(" - {}{}", dir, found ? " - FOUND" : ""); |
| 82 |
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58 | if(found) |
| 83 | 47 | return filename; | |
| 84 | } | ||
| 85 | // throw exception if not found anywhere | ||
| 86 |
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3 | m_log->Error("Cannot find configuration file named '{}'", name); |
| 87 | 3 | PrintDirectories(Logger::error); | |
| 88 |
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3 | throw std::runtime_error("configuration file not found"); |
| 89 | } | ||
| 90 | |||
| 91 | 87 | std::string ConfigFileReader::ConvertAlgoNameToConfigName(std::string_view algo_name, std::string_view ext) | |
| 92 | { | ||
| 93 | 87 | std::string result = std::string(algo_name); | |
| 94 | std::string::size_type it = 0; | ||
| 95 |
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151 | while((it = result.find("::", it)) != std::string::npos) |
| 96 |
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64 | result.replace(it, 2, "/"); |
| 97 |
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435 | return "algorithms/" + result + "/Config." + std::string(ext); |
| 98 | } | ||
| 99 | |||
| 100 | } | ||
| 101 |