src/documentmanager.cpp

Tue, 28 Jun 2022 14:10:27 +0300

author
Teemu Piippo <teemu.s.piippo@gmail.com>
date
Tue, 28 Jun 2022 14:10:27 +0300
changeset 286
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parent 264
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child 328
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permissions
-rw-r--r--

Disable language changing for now (translations won't go into 1.0)

24
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1 /*
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2 * LDForge: LDraw parts authoring CAD
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3 * Copyright (C) 2013 - 2020 Teemu Piippo
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4 *
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5 * This program is free software: you can redistribute it and/or modify
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6 * it under the terms of the GNU General Public License as published by
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7 * the Free Software Foundation, either version 3 of the License, or
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8 * (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 */
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18
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19 #include <QFile>
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20 #include <QDir>
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21 #include <QFileInfo>
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22 #include <QSaveFile>
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23 #include <deque>
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24 #include "src/documentmanager.h"
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25 #include "src/parser.h"
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26
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27 DocumentManager::DocumentManager(QObject *parent) :
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28 QObject{parent}
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29 {
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30 }
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31
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32 /**
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33 * @brief Creates a new model.
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34 * @returns the ID of the new model
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35 */
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36 ModelId DocumentManager::newModel()
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37 {
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38 const ModelId modelId{++this->modelIdCounter};
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39 this->openModels.emplace(std::make_pair(modelId, ModelInfo{
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40 .model = std::make_unique<Model>(this),
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41 .id = modelId,
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42 .opentype = OpenType::ManuallyOpened,
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43 }));
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44 this->makePolygonCacheForModel(modelId);
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45 Q_EMIT this->message(logInfo(tr("New model %1 created").arg(modelId.value)));
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46 return modelId;
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47 }
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48
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49 Model* DocumentManager::findDependencyByName(const ModelId modelId, const QString& name)
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50 {
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51 const auto modelsIterator = this->openModels.find(modelId);
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52 if (modelsIterator != std::end(this->openModels)) {
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53 const auto& dependencies = modelsIterator->second.dependencies;
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54 const auto dependenciesIterator = dependencies.find(name);
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55 if (dependenciesIterator != dependencies.end()) {
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56 ModelInfo& modelInfo = this->openModels[dependenciesIterator->second];
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57 return modelInfo.model.get();
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58 }
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59 else {
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60 return nullptr;
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61 }
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62 }
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63 else {
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64 return nullptr;
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65 }
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66 }
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67
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68 /**
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69 * @brief Gets a model pointer by id or nullptr if not found
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70 * @param modelId id of model to find
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71 * @returns model pointer or null
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72 */
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73 Model *DocumentManager::getModelById(ModelId modelId)
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74 {
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75 const auto iterator = this->openModels.find(modelId);
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76 if (iterator != this->openModels.end())
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77 {
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78 return iterator->second.model.get();
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79 }
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80 else
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81 {
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82 return nullptr;
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83 }
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84 }
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85
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86 QString pathToName(const QFileInfo& path)
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87 {
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88 static const char* paths[] = {
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89 "s",
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90 "48"
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91 "8"
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92 };
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93 const QString baseName = path.fileName();
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94 const QString dirName = QFileInfo{path.dir().path()}.fileName();
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95 QString result;
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96 if (std::find(std::begin(paths), std::end(paths), dirName) != std::end(paths))
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97 {
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98 result = dirName + "\\" + baseName;
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99 }
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100 else
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101 {
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102 result = baseName;
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103 }
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104 return result;
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105 }
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106
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107 /**
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108 * @brief Tries to open the model at the specified path
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109 * @param path Path to the model to open
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110 * @param errorStream Where to write any errors
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111 * @param openType rationale behind opening this file
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112 * @returns model id, or no value on error
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113 */
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114 std::optional<ModelId> DocumentManager::openModel(
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115 const QString& path,
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116 QTextStream& errorStream,
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117 const OpenType openType
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118 ) {
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119 QFile file{path};
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120 const QString name = pathToName(QFileInfo{path});
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121 file.open(QFile::ReadOnly | QFile::Text);
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122 std::unique_ptr<Model> newModel = std::make_unique<Model>(nullptr);
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123 QTextStream textStream{&file};
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124 Parser parser{file};
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125 parser.parseBody(*newModel);
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126 std::optional<ModelId> result;
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127 if (file.error() == QFile::NoError)
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128 {
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129 const ModelId modelId{++this->modelIdCounter};
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130 this->openModels.emplace(std::make_pair(modelId, ModelInfo{
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131 .model = std::move(newModel),
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132 .id = modelId,
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133 .path = path,
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134 .opentype = openType,
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135 .polygonCache = {},
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136 }));
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137 this->makePolygonCacheForModel(modelId);
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138 result = modelId;
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139 Q_EMIT this->message(logInfo(tr("Opened %1 as model %2").arg(quoted(path)).arg(modelId.value)));
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140 }
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141 else
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142 {
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143 errorStream << file.errorString();
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144 }
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145 return result;
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146 }
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147
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148 void DocumentManager::closeDocument(const ModelId modelId)
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149 {
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150 ModelInfo* modelInfo = findInMap(this->openModels, modelId);
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151 if (modelInfo != nullptr)
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152 {
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153 modelInfo->opentype = OpenType::AutomaticallyOpened;
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154 this->prune();
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155 }
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156 }
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157
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158 const QString *DocumentManager::modelPath(ModelId modelId) const
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159 {
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160 const auto iterator = this->openModels.find(modelId);
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161 if (iterator != this->openModels.end())
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162 {
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163 return &iterator->second.path;
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164 }
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165 else
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166 {
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167 return nullptr;
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168 }
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169 }
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170
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171 //! \brief Changes the path of the specified model. This can cause dependencies
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172 //! to be resolved differently. As such, dependencies need to be resolved for
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173 //! all files after this operation.
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174 void DocumentManager::setModelPath(
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175 const ModelId modelId,
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176 const QString &newPath,
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177 const LibrariesModel &libraries,
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178 QTextStream &errorStream)
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179 {
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180 ModelInfo* info = findInMap(this->openModels, modelId);
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181 if (info != nullptr and info->opentype == OpenType::ManuallyOpened) {
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182 info->path = newPath;
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183 const MissingDependencies missing = this->loadDependenciesForAllModels(libraries);
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184 if (not missing.empty()) {
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185 errorStream << errorStringFromMissingDependencies(missing);
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186 }
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187 }
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188 }
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189
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190 bool DocumentManager::saveModel(const ModelId modelId, QTextStream &errors)
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191 {
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192 ModelInfo* info = findInMap(this->openModels, modelId);
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193 if (info != nullptr)
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194 {
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195 QSaveFile file{info->path};
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196 file.setDirectWriteFallback(true);
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197 if (file.open(QSaveFile::WriteOnly)) {
262
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198 ::save(*info->model.get(), &file);
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199 const bool commitSucceeded = file.commit();
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200 if (not commitSucceeded) {
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201 errors << QObject::tr("Could not save: %1").arg(file.errorString());
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202 return false;
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203 }
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204 else {
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205 return true;
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206 }
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207 }
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208 else {
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209 errors << QObject::tr("Could not open %1 for writing: %2")
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654661eab7f3 More refactor, merged main.h, basics.h and utility.h into one header file basics.h and removed plenty of unused code
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210 .arg(file.fileName(), file.errorString());
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211 return false;
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212 }
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213 }
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214 else {
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215 errors << QObject::tr("Bad model ID %1").arg(modelId.value);
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216 return false;
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217 }
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218 }
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219
148
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220 /**
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221 * @brief Searches the open models for the specified model and returns its id if found
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222 * @param model model to look for
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223 * @return id or no value if not found
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224 */
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225 std::optional<ModelId> DocumentManager::findIdForModel(const Model *model) const
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226 {
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227 std::optional<ModelId> result;
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228 for (auto it = this->openModels.begin(); it != this->openModels.end(); ++it)
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229 {
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230 if (it->second.model.get() == model)
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231 {
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232 result = it->first;
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233 break;
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234 }
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235 }
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236 return result;
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237 }
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238
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239 PolygonCache *DocumentManager::getPolygonCacheForModel(ModelId modelId)
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240 {
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241 ModelInfo* info = findInMap(this->openModels, modelId);
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242 if (info != nullptr) {
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243 return &info->polygonCache;
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244 }
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245 else {
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246 return nullptr;
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247 }
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248 }
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249
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250 const DocumentManager::ModelInfo *DocumentManager::find(ModelId modelId) const
212
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251 {
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252 return findInMap(this->openModels, modelId);
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253 }
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254
214
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255 void DocumentManager::setModelPayload(ModelId modelId, QObject *object)
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256 {
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257 ModelInfo* info = findInMap(this->openModels, modelId);
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258 if (info != nullptr) {
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259 info->payload = object;
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260 object->setParent(this);
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261 }
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262 }
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263
212
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264 QString errorStringFromMissingDependencies(const DocumentManager::MissingDependencies& missing)
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265 {
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266 QString missingString;
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267 forValueInMap(missing, [&missingString](const QString& path){
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268 missingString = joined(missingString, QStringLiteral(", "), path);
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269 });
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270 return QObject::tr("The following files could not be opened: %1")
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271 .arg(missingString);
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272 }
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273
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274 template<typename T, typename K>
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275 void removeFromSet(std::set<T>& set, K&& valueToRemove)
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276 {
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277 const auto it = std::lower_bound(set.begin(), set.end(), valueToRemove);
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278 if (it != set.end() and *it == valueToRemove) {
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279 set.erase(it);
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280 }
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281 }
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282
213
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283 //! @brief Cleans up and erases models that are no longer required.
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284 void DocumentManager::prune()
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285 {
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286 Graph<ModelId> dependencyGraph;
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287 forValueInMap(this->openModels, [&dependencyGraph](const ModelInfo& info) {
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288 forValueInMap(info.dependencies, [&dependencyGraph, &info](ModelId dep){
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289 dependencyGraph.push_back({.from = info.id, .to = dep});
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290 });
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291 });
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292 std::set<ModelId> autoOpened;
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293 forValueInMap(this->openModels, [&autoOpened](const ModelInfo& info) {
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294 if (info.opentype == OpenType::AutomaticallyOpened) {
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295 autoOpened.insert(info.id);
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296 }
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297 });
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298 bool repeat = true;
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299 while (repeat) {
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300 repeat = false;
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301 std::set<ModelId> prunable = autoOpened;
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302 for (const auto& pair : dependencyGraph) {
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303 removeFromSet(prunable, pair.to);
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304 }
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305 for (ModelId idToPrune : prunable) {
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306 auto it = this->openModels.find(idToPrune);
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307 if (it != this->openModels.end()) {
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308 Q_EMIT this->message(logInfo(tr("Model %1 (%2) pruned").arg(idToPrune.value).arg(it->second.path)));
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309 this->openModels.erase(it);
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310 }
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311 removeFromSet(autoOpened, idToPrune);
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312 std::erase_if(dependencyGraph, [&idToPrune](const GraphEdge<ModelId>& edge) {
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313 return edge.from == idToPrune;
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314 });
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315 repeat = true;
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316 }
147
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317 }
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318 }
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319
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320 void DocumentManager::makePolygonCacheForModel(const ModelId modelId)
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321 {
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322 Model* model = this->getModelById(modelId);
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323 if (model != nullptr)
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324 {
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325 const auto modelModified = [this, model]{
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326 const std::optional<ModelId> modelId = this->findIdForModel(model);
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327 if (modelId.has_value()) {
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328 ModelInfo* info = findInMap(this->openModels, *modelId);
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329 if (info != nullptr) {
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330 info->polygonCache.needRecache = true;
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331 }
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332 }
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333 };
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334 QObject::connect(model, &Model::dataChanged, modelModified);
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335 QObject::connect(model, &Model::rowsInserted, modelModified);
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336 QObject::connect(model, &Model::rowsRemoved, modelModified);
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337 }
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338 }
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339
212
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340 static QString findFile(
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341 QString referenceName,
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342 const QString& modelPath,
230
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343 const LibrariesModel& libraries)
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344 {
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345 // Try to find the file in the same place as the model itself
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346 referenceName.replace("\\", "/");
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347 const QDir dir = QFileInfo{modelPath}.dir();
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348 QString referencedFilePath = dir.filePath(referenceName);
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349 if (not QFileInfo{referencedFilePath}.exists())
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350 {
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351 // Look for it in the libraries
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352 referencedFilePath = libraries.findFile(referenceName);
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353 }
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354 return referencedFilePath;
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355 }
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356
212
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357 static std::set<QString> referenceNames(const Model* model)
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358 {
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359 std::set<QString> result;
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360 iterate<Colored<SubfileReference>>(*model, [&result](const SubfileReference& ref){
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361 result.insert(ref.name);
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362 });
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363 return result;
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364 }
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365
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366 struct Dependency
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367 {
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368 QString name;
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369 QString path;
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370 bool operator<(const Dependency& other) const
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371 {
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372 if (this->name != other.name) {
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373 return this->name < other.name;
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374 }
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375 else {
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376 return this->path < other.path;
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377 }
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378 }
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379 };
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380
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381 static std::set<Dependency> resolveReferencePaths(
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382 const DocumentManager::ModelInfo* modelInfo,
230
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383 const LibrariesModel* libraries)
200
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384 {
212
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385 std::set<Dependency> result;
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386 const std::set<QString> refNames = referenceNames(modelInfo->model.get());
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387 if (modelInfo != nullptr) {
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388 for (const QString& name : refNames) {
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389 const QString path = findFile(name, modelInfo->path, *libraries);
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390 if (not path.isEmpty()) {
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391 result.insert(Dependency{.name = name, .path = path});
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392 }
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393 }
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394 }
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395 return result;
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396 }
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397
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398 static void loadDependenciesForModel(
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399 DocumentManager::ModelInfo* info,
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400 DocumentManager* documents,
230
a1f3f7d9078b rename LibraryManager -> LibrariesModel
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401 const LibrariesModel* libraries,
212
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402 std::map<QString, QString>& missing)
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403 {
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404 bool repeat = true;
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405 info->dependencies.clear();
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406 while (repeat) {
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407 repeat = false;
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408 const std::set<Dependency> dependencies = resolveReferencePaths(info, libraries);
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409 for (const Dependency& dep : dependencies) {
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410 if (not info->dependencies.contains(dep.name) and not missing.contains(dep.path)) {
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411 QString loadErrorString;
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412 QTextStream localErrorStream{&loadErrorString};
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413 const std::optional<ModelId> modelIdOpt = documents->openModel(
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414 dep.path,
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415 localErrorStream,
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416 OpenType::AutomaticallyOpened);
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417 if (not modelIdOpt.has_value()) {
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418 const QString& errorMessage = QObject::tr("could not load '%1': %2")
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419 .arg(dep.path, loadErrorString);
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420 missing[dep.path] = errorMessage;
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421 }
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422 else {
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423 info->dependencies[dep.name] = modelIdOpt.value();
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424 repeat = true;
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425 }
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426 }
200
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427 }
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diff changeset
428 }
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429 }
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430
230
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431 std::map<QString, QString> DocumentManager::loadDependenciesForAllModels(const LibrariesModel& libraries)
12
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432 {
212
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433 std::map<QString, QString> missing;
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434 for (auto& modelInfoPair : this->openModels)
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435 {
212
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436 loadDependenciesForModel(&modelInfoPair.second, this, &libraries, missing);
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437 }
212
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438 this->prune();
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439 return missing;
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440 }

mercurial