////  HifiConfigVariantMap.cpp//  libraries/shared/src////  Created by Stephen Birarda on 2014-04-08.//  Copyright 2014 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include "HifiConfigVariantMap.h" #include <QtCore/QCoreApplication>#include <QtCore/QDebug>#include <QtCore/QDir>#include <QtCore/QFile>#include <QtCore/QJsonDocument>#include <QtCore/QJsonArray>#include <QtCore/QJsonObject>#include <QtCore/QStandardPaths>#include <QtCore/QVariant> #include "PathUtils.h"#include "SharedLogging.h" QVariantMap HifiConfigVariantMap::mergeCLParametersWithJSONConfig(const QStringList& argumentList) {     QMultiMap<QString, QVariant> mergedMap;     // Add anything in the CL parameter list to the variant map.    // Take anything with a dash in it as a key, and the values after it as the value.     const QString DASHED_KEY_REGEX_STRING = "(^-{1,2})([\\w-]+)";    QRegExp dashedKeyRegex(DASHED_KEY_REGEX_STRING);     int keyIndex = argumentList.indexOf(dashedKeyRegex);    int nextKeyIndex = 0;     // check if there is a config file to read where we can pull config info not passed on command line    const QString CONFIG_FILE_OPTION = "--config";     while (keyIndex != -1) {        if (argumentList[keyIndex] != CONFIG_FILE_OPTION) {            // we have a key - look forward to see how many values associate to it            QString key = dashedKeyRegex.cap(2);             nextKeyIndex = argumentList.indexOf(dashedKeyRegex, keyIndex + 1);             if (nextKeyIndex == keyIndex + 1 || keyIndex == argumentList.size() - 1) {                // this option is simply a switch, so add it to the map with a value of `true`                mergedMap.insert(key, QVariant(true));            } else {                int maxIndex = (nextKeyIndex == -1) ? argumentList.size() : nextKeyIndex;                 // there's at least one value associated with the option                // pull the first value to start                QString value = argumentList[keyIndex + 1];                 // for any extra values, append them, with a space, to the value string                for (int i = keyIndex + 2; i < maxIndex; i++) {                    value +=  " " + argumentList[i];                }                 // add the finalized value to the merged map                mergedMap.insert(key, value);            }             keyIndex = nextKeyIndex;        } else {            keyIndex = argumentList.indexOf(dashedKeyRegex, keyIndex + 1);        }    }     int configIndex = argumentList.indexOf(CONFIG_FILE_OPTION);     QString configFilePath;     if (configIndex != -1) {        // we have a config file - try and read it        configFilePath = argumentList[configIndex + 1];    } else {        // no config file - try to read a file config.json at the system config path        configFilePath = QString("%1/%2/%3/config.json").arg(QStandardPaths::writableLocation(QStandardPaths::ConfigLocation),                                                             QCoreApplication::organizationName(),                                                             QCoreApplication::applicationName());    }       return mergedMap;} void HifiConfigVariantMap::loadConfig() {    loadMapFromJSONFile(_userConfig, _userConfigFilename);} void HifiConfigVariantMap::loadMapFromJSONFile(QVariantMap& existingMap, const QString& filename) {    QFile configFile(filename);     if (configFile.exists()) {        qCDebug(shared) << "Reading JSON config file at" << filename;        configFile.open(QIODevice::ReadOnly);         QJsonDocument configDocument = QJsonDocument::fromJson(configFile.readAll());        existingMap = configDocument.toVariant().toMap();     } else {        qCDebug(shared) << "Could not find JSON config file at" << filename;    }} void HifiConfigVariantMap::addMissingValuesToExistingMap(QVariantMap& existingMap, const QVariantMap& newMap) {    foreach(const QString& key, newMap.keys()) {        if (existingMap.contains(key)) {            // if this is just a regular value, we're done - we don't ovveride             if (newMap[key].canConvert(QMetaType::QVariantMap) && existingMap[key].canConvert(QMetaType::QVariantMap)) {                // there's a variant map below and the existing map has one too, so we need to keep recursing                addMissingValuesToExistingMap(*static_cast<QVariantMap*>(existingMap[key].data()), newMap[key].toMap());            }        } else {            existingMap[key] = newMap[key];        }    }} QVariant* valueForKeyPath(QVariantMap& variantMap, const QString& keyPath, bool shouldCreateIfMissing) {    int dotIndex = keyPath.indexOf('.');     QString firstKey = (dotIndex == -1) ? keyPath : keyPath.mid(0, dotIndex);     if (shouldCreateIfMissing || variantMap.contains(firstKey)) {        if (dotIndex == -1) {            return &variantMap[firstKey];        }        if (!variantMap[firstKey].canConvert(QMetaType::QVariantMap)) {            variantMap[firstKey] = QVariantMap();        }        return valueForKeyPath(*static_cast<QVariantMap*>(variantMap[firstKey].data()), keyPath.mid(dotIndex + 1),                               shouldCreateIfMissing);    }     return nullptr;}