mirror of
https://github.com/rwengine/openrw.git
synced 2024-11-07 11:22:45 +01:00
421 lines
13 KiB
C++
421 lines
13 KiB
C++
#include "GameConfig.hpp"
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#include <algorithm>
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#include <rw/defines.hpp>
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#include <boost/property_tree/ini_parser.hpp>
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#include <boost/property_tree/ptree.hpp>
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namespace pt = boost::property_tree;
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const std::string kConfigDirectoryName("OpenRW");
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GameConfig::GameConfig(const std::string &configName,
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const std::string &configPath)
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: m_configName(configName)
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, m_configPath(configPath)
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, m_parseResult()
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, m_inputInvertY(false) {
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if (m_configPath.empty()) {
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m_configPath = getDefaultConfigPath();
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}
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// Look up the path to use
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auto configFile = getConfigFile();
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std::string dummy;
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m_parseResult =
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parseConfig(ParseType::FILE, configFile, ParseType::CONFIG, dummy);
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}
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std::string GameConfig::getConfigFile() const {
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return m_configPath + "/" + m_configName;
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}
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bool GameConfig::isValid() const {
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return m_parseResult.isValid();
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}
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const GameConfig::ParseResult &GameConfig::getParseResult() const {
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return m_parseResult;
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}
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std::string GameConfig::getDefaultConfigPath() {
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#if defined(RW_LINUX) || defined(RW_FREEBSD) || defined(RW_NETBSD) || \
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defined(RW_OPENBSD)
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char *config_home = getenv("XDG_CONFIG_HOME");
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if (config_home != nullptr) {
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return std::string(config_home) + "/" + kConfigDirectoryName;
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}
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char *home = getenv("HOME");
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if (home != nullptr) {
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return std::string(home) + "/.config/" + kConfigDirectoryName;
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}
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#elif defined(RW_OSX)
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char *home = getenv("HOME");
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if (home)
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return std::string(home) + "/Library/Preferences/" +
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kConfigDirectoryName;
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#else
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return ".";
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#endif
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// Well now we're stuck.
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RW_ERROR("No default config path found.");
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return ".";
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}
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std::string stripComments(const std::string &str) {
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auto s = std::string(str, 0, str.find_first_of(";#"));
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return s.erase(s.find_last_not_of(" \n\r\t") + 1);
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}
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struct StringTranslator {
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typedef std::string internal_type;
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typedef std::string external_type;
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boost::optional<external_type> get_value(const internal_type &str) {
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return stripComments(str);
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}
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boost::optional<internal_type> put_value(const external_type &str) {
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return str;
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}
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};
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struct BoolTranslator {
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typedef std::string internal_type;
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typedef bool external_type;
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boost::optional<external_type> get_value(const internal_type &str) {
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boost::optional<external_type> res;
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try {
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res = std::stoi(stripComments(str)) != 0;
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} catch (std::invalid_argument &e) {
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}
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return res;
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}
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boost::optional<internal_type> put_value(const external_type &b) {
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return internal_type(b ? "1" : "0");
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}
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};
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struct IntTranslator {
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typedef std::string internal_type;
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typedef int external_type;
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boost::optional<external_type> get_value(const internal_type &str) {
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boost::optional<external_type> res;
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try {
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res = std::stoi(stripComments(str));
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} catch (std::invalid_argument &e) {
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}
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return res;
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}
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boost::optional<internal_type> put_value(const external_type &i) {
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return std::to_string(i);
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}
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};
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GameConfig::ParseResult GameConfig::saveConfig() {
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auto filename = getConfigFile();
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return parseConfig(ParseType::CONFIG, "", ParseType::FILE, filename);
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}
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std::string GameConfig::getDefaultINIString() {
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std::string result;
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parseConfig(ParseType::DEFAULT, "", ParseType::STRING, result);
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return result;
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}
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GameConfig::ParseResult GameConfig::parseConfig(GameConfig::ParseType srcType,
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const std::string &source,
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ParseType destType,
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std::string &destination) {
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// srcTree: holds all key/value pairs
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pt::ptree srcTree;
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ParseResult parseResult(srcType, source, destType, destination);
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try {
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if (srcType == ParseType::STRING) {
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std::istringstream iss(source);
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pt::read_ini(iss, srcTree);
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} else if (srcType == ParseType::FILE) {
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pt::read_ini(source, srcTree);
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}
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} catch (pt::ini_parser_error &e) {
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// Catches illegal input files (nonsensical input, duplicate keys)
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parseResult.failInputFile(e.line(), e.message());
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RW_MESSAGE(e.what());
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return parseResult;
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}
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if (destType == ParseType::DEFAULT) {
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parseResult.failArgument();
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RW_ERROR("Target cannot be DEFAULT.");
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return parseResult;
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}
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// knownKeys: holds all known keys
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std::vector<std::string> knownKeys;
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auto read_config = [&](const std::string &key, auto &target,
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const auto &defaultValue, auto &translator,
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bool optional = true) {
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typedef typename std::remove_reference<decltype(target)>::type config_t;
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config_t sourceValue;
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knownKeys.push_back(key);
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switch (srcType) {
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case ParseType::DEFAULT:
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sourceValue = defaultValue;
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break;
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case ParseType::CONFIG:
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sourceValue = target;
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break;
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case ParseType::FILE:
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case ParseType::STRING:
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try {
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sourceValue = srcTree.get<config_t>(key, translator);
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} catch (pt::ptree_bad_path &e) {
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// Catches missing key-value pairs: fail when required
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if (!optional) {
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parseResult.failRequiredMissing(key);
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RW_MESSAGE(e.what());
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return;
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}
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sourceValue = defaultValue;
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} catch (pt::ptree_bad_data &e) {
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// Catches illegal value data: always fail
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parseResult.failInvalidData(key);
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RW_MESSAGE(e.what());
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return;
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}
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break;
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}
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srcTree.put(key, sourceValue, translator);
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switch (destType) {
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case ParseType::DEFAULT:
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// Target cannot be DEFAULT (case already handled)
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parseResult.failArgument();
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break;
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case ParseType::CONFIG:
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// Don't care if success == false
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target = sourceValue;
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break;
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case ParseType::FILE:
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case ParseType::STRING:
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break;
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}
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};
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auto deft = StringTranslator();
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auto boolt = BoolTranslator();
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// Add new configuration parameters here.
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// Additionally, add them to the unit test.
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// @todo Don't allow path separators and relative directories
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read_config("game.path", this->m_gamePath, "/opt/games/Grand Theft Auto 3",
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deft, false);
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read_config("game.language", this->m_gameLanguage, "american", deft);
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read_config("input.invert_y", this->m_inputInvertY, false, boolt);
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if (!parseResult.isValid()) return parseResult;
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// Build the unknown key/value map from the correct source
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switch (srcType) {
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case ParseType::FILE:
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case ParseType::STRING:
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for (const auto §ion : srcTree) {
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for (const auto &subKey : section.second) {
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std::string key = section.first + "." + subKey.first;
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if (std::find(knownKeys.begin(), knownKeys.end(), key) ==
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knownKeys.end()) {
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RW_MESSAGE("Unknown configuration key: " << key);
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parseResult.addUnknownData(key, subKey.second.data());
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}
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}
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}
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break;
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case ParseType::CONFIG:
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parseResult.setUnknownData(m_parseResult.getUnknownData());
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break;
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case ParseType::DEFAULT:
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break;
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}
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// Store the unknown key/value map to the correct destination
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switch (destType) {
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case ParseType::CONFIG:
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m_parseResult.setUnknownData(parseResult.getUnknownData());
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break;
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case ParseType::STRING:
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case ParseType::FILE:
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for (const auto &keyvalue : parseResult.getUnknownData()) {
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srcTree.put(keyvalue.first, keyvalue.second);
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}
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break;
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default:
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break;
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}
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try {
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if (destType == ParseType::STRING) {
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std::ostringstream ostream;
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pt::write_ini(ostream, srcTree);
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destination = ostream.str();
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} else if (destType == ParseType::FILE) {
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pt::write_ini(destination, srcTree);
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}
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} catch (pt::ini_parser_error &e) {
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parseResult.failOutputFile(e.line(), e.message());
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RW_MESSAGE(e.what());
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}
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return parseResult;
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}
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std::string GameConfig::extractFilenameParseTypeData(ParseType type,
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const std::string &data) {
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switch (type) {
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case ParseType::CONFIG:
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return "<configuration>";
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case ParseType::FILE:
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return data;
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case ParseType::STRING:
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return "<string>";
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case ParseType::DEFAULT:
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default:
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return "<default>";
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}
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}
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GameConfig::ParseResult::ParseResult(GameConfig::ParseType srcType,
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const std::string &source,
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GameConfig::ParseType destType,
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const std::string &destination)
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: m_result(ErrorType::GOOD)
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, m_inputfilename(GameConfig::extractFilenameParseTypeData(srcType, source))
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, m_outputfilename(
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GameConfig::extractFilenameParseTypeData(destType, destination))
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, m_line(0)
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, m_message()
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, m_keys_requiredMissing()
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, m_keys_invalidData()
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, m_unknownData() {
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}
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GameConfig::ParseResult::ParseResult()
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: m_result(ErrorType::GOOD)
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, m_inputfilename()
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, m_outputfilename()
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, m_line(0)
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, m_message()
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, m_keys_requiredMissing()
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, m_keys_invalidData() {
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}
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GameConfig::ParseResult::ErrorType GameConfig::ParseResult::type() const {
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return this->m_result;
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}
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bool GameConfig::ParseResult::isValid() const {
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return this->type() == ErrorType::GOOD;
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}
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void GameConfig::ParseResult::failInputFile(size_t line,
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const std::string &message) {
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this->m_result = ParseResult::ErrorType::INVALIDINPUTFILE;
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this->m_line = line;
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this->m_message = message;
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}
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void GameConfig::ParseResult::failArgument() {
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this->m_result = ParseResult::ErrorType::INVALIDARGUMENT;
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}
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void GameConfig::ParseResult::failRequiredMissing(const std::string &key) {
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this->m_result = ParseResult::ErrorType::INVALIDCONTENT;
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this->m_keys_requiredMissing.push_back(key);
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}
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void GameConfig::ParseResult::failInvalidData(const std::string &key) {
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this->m_result = ParseResult::ErrorType::INVALIDCONTENT;
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this->m_keys_invalidData.push_back(key);
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}
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void GameConfig::ParseResult::failOutputFile(size_t line,
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const std::string &message) {
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this->m_result = ParseResult::ErrorType::INVALIDOUTPUTFILE;
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this->m_line = line;
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this->m_message = message;
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}
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const std::vector<std::string>
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&GameConfig::ParseResult::getKeysRequiredMissing() const {
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return this->m_keys_requiredMissing;
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}
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const std::vector<std::string> &GameConfig::ParseResult::getKeysInvalidData()
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const {
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return this->m_keys_invalidData;
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}
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std::string GameConfig::ParseResult::what() const {
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switch (this->m_result) {
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case ErrorType::GOOD:
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return "Good";
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case ErrorType::INVALIDARGUMENT:
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return "Invalid argument: destination cannot be the default config";
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case ErrorType::INVALIDINPUTFILE: {
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std::ostringstream oss;
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oss << "Error while reading \"" << this->m_inputfilename
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<< "\":" << this->m_line << ":\n"
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<< this->m_message;
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return oss.str();
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}
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case ErrorType::INVALIDOUTPUTFILE: {
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std::ostringstream oss;
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oss << "Error while writing \"" << this->m_inputfilename
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<< "\":" << this->m_line << ":\n"
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<< this->m_message;
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return oss.str();
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}
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case ErrorType::INVALIDCONTENT: {
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std::ostringstream oss;
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oss << "Error while parsing \"" << this->m_inputfilename << "\".";
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if (this->m_keys_requiredMissing.size()) {
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oss << "\nRequired keys that are missing:";
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for (auto &key : this->m_keys_requiredMissing) {
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oss << "\n - " << key;
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}
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}
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if (this->m_keys_invalidData.size()) {
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oss << "\nKeys that contain invalid data:";
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for (auto &key : this->m_keys_invalidData) {
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oss << "\n - " << key;
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}
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}
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return oss.str();
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}
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default:
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return "Unknown error";
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}
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}
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void GameConfig::ParseResult::addUnknownData(const std::string &key,
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const std::string &value) {
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this->m_unknownData[key] = value;
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}
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const std::map<std::string, std::string>
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&GameConfig::ParseResult::getUnknownData() const {
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return this->m_unknownData;
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}
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void GameConfig::ParseResult::setUnknownData(
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const std::map<std::string, std::string> &unknownData) {
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this->m_unknownData = unknownData;
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}
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