1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.tagging.presets;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.io.BufferedReader;
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7 | import java.io.File;
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8 | import java.io.IOException;
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9 | import java.io.InputStream;
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10 | import java.io.InputStreamReader;
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11 | import java.io.Reader;
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12 | import java.util.ArrayDeque;
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13 | import java.util.ArrayList;
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14 | import java.util.Collection;
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15 | import java.util.Deque;
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16 | import java.util.HashMap;
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17 | import java.util.Iterator;
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18 | import java.util.LinkedHashSet;
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19 | import java.util.LinkedList;
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20 | import java.util.List;
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21 | import java.util.Map;
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22 | import java.util.Set;
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23 |
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24 | import javax.swing.JOptionPane;
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25 |
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26 | import org.openstreetmap.josm.data.preferences.sources.PresetPrefHelper;
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27 | import org.openstreetmap.josm.gui.MainApplication;
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28 | import org.openstreetmap.josm.gui.tagging.presets.items.Check;
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29 | import org.openstreetmap.josm.gui.tagging.presets.items.CheckGroup;
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30 | import org.openstreetmap.josm.gui.tagging.presets.items.Combo;
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31 | import org.openstreetmap.josm.gui.tagging.presets.items.ComboMultiSelect;
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32 | import org.openstreetmap.josm.gui.tagging.presets.items.ItemSeparator;
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33 | import org.openstreetmap.josm.gui.tagging.presets.items.Key;
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34 | import org.openstreetmap.josm.gui.tagging.presets.items.Label;
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35 | import org.openstreetmap.josm.gui.tagging.presets.items.Link;
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36 | import org.openstreetmap.josm.gui.tagging.presets.items.MultiSelect;
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37 | import org.openstreetmap.josm.gui.tagging.presets.items.Optional;
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38 | import org.openstreetmap.josm.gui.tagging.presets.items.PresetLink;
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39 | import org.openstreetmap.josm.gui.tagging.presets.items.PresetListEntry;
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40 | import org.openstreetmap.josm.gui.tagging.presets.items.Roles;
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41 | import org.openstreetmap.josm.gui.tagging.presets.items.Roles.Role;
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42 | import org.openstreetmap.josm.gui.tagging.presets.items.Space;
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43 | import org.openstreetmap.josm.gui.tagging.presets.items.Text;
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44 | import org.openstreetmap.josm.io.CachedFile;
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45 | import org.openstreetmap.josm.io.NetworkManager;
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46 | import org.openstreetmap.josm.io.UTFInputStreamReader;
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47 | import org.openstreetmap.josm.spi.preferences.Config;
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48 | import org.openstreetmap.josm.tools.I18n;
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49 | import org.openstreetmap.josm.tools.Logging;
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50 | import org.openstreetmap.josm.tools.Stopwatch;
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51 | import org.openstreetmap.josm.tools.Utils;
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52 | import org.openstreetmap.josm.tools.XmlObjectParser;
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53 | import org.xml.sax.SAXException;
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54 |
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55 | /**
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56 | * The tagging presets reader.
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57 | * @since 6068
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58 | */
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59 | public final class TaggingPresetReader {
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60 |
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61 | /**
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62 | * The accepted MIME types sent in the HTTP Accept header.
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63 | * @since 6867
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64 | */
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65 | public static final String PRESET_MIME_TYPES =
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66 | "application/xml, text/xml, text/plain; q=0.8, application/zip, application/octet-stream; q=0.5";
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67 |
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68 | /**
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69 | * The XML namespace for the tagging presets
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70 | * @since 16640
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71 | */
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72 | public static final String NAMESPACE = Config.getUrls().getXMLBase() + "/tagging-preset-1.0";
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73 |
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74 | /**
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75 | * The internal resource URL of the XML schema file to be used with {@link CachedFile}
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76 | * @since 16640
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77 | */
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78 | public static final String SCHEMA_SOURCE = "resource://data/tagging-preset.xsd";
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79 |
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80 | private static volatile File zipIcons;
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81 | private static volatile boolean loadIcons = true;
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82 |
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83 | /**
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84 | * Holds a reference to a chunk of items/objects.
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85 | */
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86 | public static class Chunk {
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87 | /** The chunk id, can be referenced later */
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88 | public String id;
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89 |
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90 | @Override
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91 | public String toString() {
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92 | return "Chunk [id=" + id + ']';
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93 | }
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94 | }
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95 |
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96 | /**
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97 | * Holds a reference to an earlier item/object.
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98 | */
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99 | public static class Reference {
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100 | /** Reference matching a chunk id defined earlier **/
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101 | public String ref;
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102 |
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103 | @Override
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104 | public String toString() {
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105 | return "Reference [ref=" + ref + ']';
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106 | }
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107 | }
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108 |
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109 | static class HashSetWithLast<E> extends LinkedHashSet<E> {
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110 | private static final long serialVersionUID = 1L;
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111 | protected transient E last;
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112 |
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113 | @Override
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114 | public boolean add(E e) {
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115 | last = e;
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116 | return super.add(e);
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117 | }
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118 |
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119 | /**
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120 | * Returns the last inserted element.
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121 | * @return the last inserted element
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122 | */
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123 | public E getLast() {
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124 | return last;
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125 | }
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126 | }
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127 |
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128 | /**
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129 | * Returns the set of preset source URLs.
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130 | * @return The set of preset source URLs.
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131 | */
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132 | public static Set<String> getPresetSources() {
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133 | return new PresetPrefHelper().getActiveUrls();
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134 | }
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135 |
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136 | private static XmlObjectParser buildParser() {
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137 | XmlObjectParser parser = new XmlObjectParser();
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138 | parser.mapOnStart("item", TaggingPreset.class);
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139 | parser.mapOnStart("separator", TaggingPresetSeparator.class);
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140 | parser.mapBoth("group", TaggingPresetMenu.class);
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141 | parser.map("text", Text.class);
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142 | parser.map("link", Link.class);
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143 | parser.map("preset_link", PresetLink.class);
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144 | parser.mapOnStart("optional", Optional.class);
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145 | parser.mapOnStart("roles", Roles.class);
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146 | parser.map("role", Role.class);
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147 | parser.mapBoth("checkgroup", CheckGroup.class);
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148 | parser.map("check", Check.class);
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149 | parser.map("combo", Combo.class);
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150 | parser.map("multiselect", MultiSelect.class);
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151 | parser.map("label", Label.class);
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152 | parser.map("space", Space.class);
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153 | parser.map("key", Key.class);
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154 | parser.map("list_entry", PresetListEntry.class);
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155 | parser.map("item_separator", ItemSeparator.class);
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156 | parser.mapBoth("chunk", Chunk.class);
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157 | parser.map("reference", Reference.class);
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158 | return parser;
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159 | }
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160 |
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161 | /**
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162 | * Reads all tagging presets from the input reader.
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163 | * @param in The input reader
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164 | * @param validate if {@code true}, XML validation will be performed
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165 | * @return collection of tagging presets
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166 | * @throws SAXException if any XML error occurs
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167 | */
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168 | public static Collection<TaggingPreset> readAll(Reader in, boolean validate) throws SAXException {
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169 | return readAll(in, validate, new HashSetWithLast<TaggingPreset>());
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170 | }
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171 |
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172 | /**
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173 | * Reads all tagging presets from the input reader.
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174 | * @param in The input reader
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175 | * @param validate if {@code true}, XML validation will be performed
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176 | * @param all the accumulator for parsed tagging presets
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177 | * @return the accumulator
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178 | * @throws SAXException if any XML error occurs
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179 | */
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180 | static Collection<TaggingPreset> readAll(Reader in, boolean validate, HashSetWithLast<TaggingPreset> all) throws SAXException {
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181 | XmlObjectParser parser = buildParser();
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182 |
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183 | /** to detect end of {@code <checkgroup>} */
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184 | CheckGroup lastcheckgroup = null;
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185 | /** to detect end of {@code <group>} */
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186 | TaggingPresetMenu lastmenu = null;
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187 | /** to detect end of reused {@code <group>} */
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188 | TaggingPresetMenu lastmenuOriginal = null;
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189 | Roles lastrole = null;
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190 | final List<Check> checks = new LinkedList<>();
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191 | final List<PresetListEntry> listEntries = new LinkedList<>();
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192 | final Map<String, List<Object>> byId = new HashMap<>();
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193 | final Deque<String> lastIds = new ArrayDeque<>();
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194 | /** lastIdIterators contains non empty iterators of items to be handled before obtaining the next item from the XML parser */
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195 | final Deque<Iterator<Object>> lastIdIterators = new ArrayDeque<>();
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196 |
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197 | if (validate) {
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198 | parser.startWithValidation(in, NAMESPACE, SCHEMA_SOURCE);
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199 | } else {
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200 | parser.start(in);
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201 | }
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202 | while (parser.hasNext() || !lastIdIterators.isEmpty()) {
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203 | final Object o;
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204 | if (!lastIdIterators.isEmpty()) {
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205 | // obtain elements from lastIdIterators with higher priority
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206 | o = lastIdIterators.peek().next();
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207 | if (!lastIdIterators.peek().hasNext()) {
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208 | // remove iterator if is empty
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209 | lastIdIterators.pop();
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210 | }
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211 | } else {
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212 | o = parser.next();
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213 | }
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214 | Logging.trace("Preset object: {0}", o);
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215 | if (o instanceof Chunk) {
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216 | if (!lastIds.isEmpty() && ((Chunk) o).id.equals(lastIds.peek())) {
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217 | // pop last id on end of object, don't process further
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218 | lastIds.pop();
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219 | ((Chunk) o).id = null;
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220 | continue;
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221 | } else {
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222 | // if preset item contains an id, store a mapping for later usage
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223 | String lastId = ((Chunk) o).id;
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224 | lastIds.push(lastId);
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225 | byId.put(lastId, new ArrayList<>());
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226 | continue;
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227 | }
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228 | } else if (!lastIds.isEmpty()) {
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229 | // add object to mapping for later usage
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230 | byId.get(lastIds.peek()).add(o);
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231 | continue;
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232 | }
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233 | if (o instanceof Reference) {
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234 | // if o is a reference, obtain the corresponding objects from the mapping,
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235 | // and iterate over those before consuming the next element from parser.
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236 | final String ref = ((Reference) o).ref;
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237 | if (byId.get(ref) == null) {
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238 | throw new SAXException(tr("Reference {0} is being used before it was defined", ref));
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239 | }
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240 | Iterator<Object> it = byId.get(ref).iterator();
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241 | if (it.hasNext()) {
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242 | lastIdIterators.push(it);
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243 | if (lastIdIterators.size() > 100) {
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244 | throw new SAXException(tr("Reference stack for {0} is too large", ref));
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245 | }
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246 | } else {
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247 | Logging.warn("Ignoring reference '"+ref+"' denoting an empty chunk");
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248 | }
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249 | continue;
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250 | }
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251 | if (!(o instanceof TaggingPresetItem) && !checks.isEmpty()) {
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252 | all.getLast().data.addAll(checks);
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253 | checks.clear();
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254 | }
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255 | if (o instanceof TaggingPresetMenu) {
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256 | TaggingPresetMenu tp = (TaggingPresetMenu) o;
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257 | if (tp == lastmenu || tp == lastmenuOriginal) {
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258 | lastmenu = tp.group;
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259 | } else {
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260 | tp.group = lastmenu;
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261 | if (all.contains(tp)) {
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262 | lastmenuOriginal = tp;
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263 | tp = (TaggingPresetMenu) all.stream().filter(tp::equals).findFirst().orElse(tp);
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264 | lastmenuOriginal.group = null;
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265 | } else {
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266 | tp.setDisplayName();
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267 | all.add(tp);
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268 | lastmenuOriginal = null;
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269 | }
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270 | lastmenu = tp;
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271 | }
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272 | lastrole = null;
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273 | } else if (o instanceof TaggingPresetSeparator) {
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274 | TaggingPresetSeparator tp = (TaggingPresetSeparator) o;
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275 | tp.group = lastmenu;
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276 | all.add(tp);
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277 | lastrole = null;
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278 | } else if (o instanceof TaggingPreset) {
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279 | TaggingPreset tp = (TaggingPreset) o;
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280 | tp.group = lastmenu;
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281 | tp.setDisplayName();
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282 | all.add(tp);
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283 | lastrole = null;
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284 | } else {
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285 | if (!all.isEmpty()) {
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286 | if (o instanceof Roles) {
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287 | all.getLast().data.add((TaggingPresetItem) o);
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288 | if (all.getLast().roles != null) {
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289 | throw new SAXException(tr("Roles cannot appear more than once"));
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290 | }
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291 | all.getLast().roles = (Roles) o;
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292 | lastrole = (Roles) o;
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293 | // #16458 - Make sure we don't duplicate role entries if used in a chunk/reference
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294 | lastrole.roles.clear();
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295 | } else if (o instanceof Role) {
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296 | if (lastrole == null)
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297 | throw new SAXException(tr("Preset role element without parent"));
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298 | lastrole.roles.add((Role) o);
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299 | } else if (o instanceof Check) {
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300 | if (lastcheckgroup != null) {
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301 | checks.add((Check) o);
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302 | } else {
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303 | all.getLast().data.add((TaggingPresetItem) o);
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304 | }
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305 | } else if (o instanceof PresetListEntry) {
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306 | listEntries.add((PresetListEntry) o);
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307 | } else if (o instanceof CheckGroup) {
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308 | CheckGroup cg = (CheckGroup) o;
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309 | if (cg == lastcheckgroup) {
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310 | lastcheckgroup = null;
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311 | all.getLast().data.add(cg);
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312 | // Make sure list of checks is empty to avoid adding checks several times
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313 | // when used in chunks (fix #10801)
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314 | cg.checks.clear();
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315 | cg.checks.addAll(checks);
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316 | checks.clear();
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317 | } else {
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318 | lastcheckgroup = cg;
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319 | }
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320 | } else {
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321 | if (!checks.isEmpty()) {
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322 | all.getLast().data.addAll(checks);
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323 | checks.clear();
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324 | }
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325 | all.getLast().data.add((TaggingPresetItem) o);
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326 | if (o instanceof ComboMultiSelect) {
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327 | ((ComboMultiSelect) o).addListEntries(listEntries);
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328 | } else if (o instanceof Key && ((Key) o).value == null) {
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329 | ((Key) o).value = ""; // Fix #8530
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330 | }
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331 | listEntries.clear();
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332 | lastrole = null;
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333 | }
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334 | } else
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335 | throw new SAXException(tr("Preset sub element without parent"));
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336 | }
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337 | }
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338 | if (!all.isEmpty() && !checks.isEmpty()) {
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339 | all.getLast().data.addAll(checks);
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340 | checks.clear();
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341 | }
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342 | return all;
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343 | }
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344 |
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345 | /**
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346 | * Reads all tagging presets from the given source.
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347 | * @param source a given filename, URL or internal resource
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348 | * @param validate if {@code true}, XML validation will be performed
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349 | * @return collection of tagging presets
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350 | * @throws SAXException if any XML error occurs
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351 | * @throws IOException if any I/O error occurs
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352 | */
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353 | public static Collection<TaggingPreset> readAll(String source, boolean validate) throws SAXException, IOException {
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354 | return readAll(source, validate, new HashSetWithLast<TaggingPreset>());
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355 | }
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356 |
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357 | /**
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358 | * Reads all tagging presets from the given source.
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359 | * @param source a given filename, URL or internal resource
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360 | * @param validate if {@code true}, XML validation will be performed
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361 | * @param all the accumulator for parsed tagging presets
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362 | * @return the accumulator
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363 | * @throws SAXException if any XML error occurs
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364 | * @throws IOException if any I/O error occurs
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365 | */
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366 | static Collection<TaggingPreset> readAll(String source, boolean validate, HashSetWithLast<TaggingPreset> all)
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367 | throws SAXException, IOException {
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368 | Collection<TaggingPreset> tp;
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369 | Logging.debug("Reading presets from {0}", source);
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370 | Stopwatch stopwatch = Stopwatch.createStarted();
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371 | try (
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372 | CachedFile cf = new CachedFile(source).setHttpAccept(PRESET_MIME_TYPES);
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373 | // zip may be null, but Java 7 allows it: https://blogs.oracle.com/darcy/entry/project_coin_null_try_with
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374 | InputStream zip = cf.findZipEntryInputStream("xml", "preset")
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375 | ) {
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376 | if (zip != null) {
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377 | zipIcons = cf.getFile();
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378 | I18n.addTexts(zipIcons);
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379 | }
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380 | try (InputStreamReader r = UTFInputStreamReader.create(zip == null ? cf.getInputStream() : zip)) {
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381 | tp = readAll(new BufferedReader(r), validate, all);
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382 | }
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383 | }
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384 | Logging.debug(stopwatch.toString("Reading presets"));
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385 | return tp;
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386 | }
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387 |
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388 | /**
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389 | * Reads all tagging presets from the given sources.
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390 | * @param sources Collection of tagging presets sources.
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391 | * @param validate if {@code true}, presets will be validated against XML schema
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392 | * @return Collection of all presets successfully read
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393 | */
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394 | public static Collection<TaggingPreset> readAll(Collection<String> sources, boolean validate) {
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395 | return readAll(sources, validate, true);
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396 | }
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397 |
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398 | /**
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399 | * Reads all tagging presets from the given sources.
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400 | * @param sources Collection of tagging presets sources.
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401 | * @param validate if {@code true}, presets will be validated against XML schema
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402 | * @param displayErrMsg if {@code true}, a blocking error message is displayed in case of I/O exception.
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403 | * @return Collection of all presets successfully read
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404 | */
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405 | public static Collection<TaggingPreset> readAll(Collection<String> sources, boolean validate, boolean displayErrMsg) {
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406 | HashSetWithLast<TaggingPreset> allPresets = new HashSetWithLast<>();
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407 | for (String source : sources) {
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408 | try {
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409 | readAll(source, validate, allPresets);
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410 | } catch (IOException e) {
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411 | Logging.log(Logging.LEVEL_ERROR, e);
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412 | Logging.error(source);
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413 | if (source.startsWith("http")) {
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414 | NetworkManager.addNetworkError(source, e);
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415 | }
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416 | if (displayErrMsg) {
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417 | JOptionPane.showMessageDialog(
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418 | MainApplication.getMainFrame(),
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419 | tr("Could not read tagging preset source: {0}", source),
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420 | tr("Error"),
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421 | JOptionPane.ERROR_MESSAGE
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422 | );
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423 | }
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424 | } catch (SAXException | IllegalArgumentException e) {
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425 | Logging.error(e);
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426 | Logging.error(source);
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427 | if (displayErrMsg) {
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428 | JOptionPane.showMessageDialog(
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429 | MainApplication.getMainFrame(),
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430 | "<html>" + tr("Error parsing {0}: ", source) + "<br><br><table width=600>" +
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431 | Utils.escapeReservedCharactersHTML(e.getMessage()) + "</table></html>",
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432 | tr("Error"),
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433 | JOptionPane.ERROR_MESSAGE
|
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434 | );
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435 | }
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436 | }
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437 | }
|
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438 | return allPresets;
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439 | }
|
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440 |
|
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441 | /**
|
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442 | * Reads all tagging presets from sources stored in preferences.
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443 | * @param validate if {@code true}, presets will be validated against XML schema
|
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444 | * @param displayErrMsg if {@code true}, a blocking error message is displayed in case of I/O exception.
|
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445 | * @return Collection of all presets successfully read
|
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446 | */
|
---|
447 | public static Collection<TaggingPreset> readFromPreferences(boolean validate, boolean displayErrMsg) {
|
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448 | return readAll(getPresetSources(), validate, displayErrMsg);
|
---|
449 | }
|
---|
450 |
|
---|
451 | /**
|
---|
452 | * Returns the zip file where the icons are located
|
---|
453 | * @return the zip file where the icons are located
|
---|
454 | */
|
---|
455 | public static File getZipIcons() {
|
---|
456 | return zipIcons;
|
---|
457 | }
|
---|
458 |
|
---|
459 | /**
|
---|
460 | * Determines if icon images should be loaded.
|
---|
461 | * @return {@code true} if icon images should be loaded
|
---|
462 | */
|
---|
463 | public static boolean isLoadIcons() {
|
---|
464 | return loadIcons;
|
---|
465 | }
|
---|
466 |
|
---|
467 | /**
|
---|
468 | * Sets whether icon images should be loaded.
|
---|
469 | * @param loadIcons {@code true} if icon images should be loaded
|
---|
470 | */
|
---|
471 | public static void setLoadIcons(boolean loadIcons) {
|
---|
472 | TaggingPresetReader.loadIcons = loadIcons;
|
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473 | }
|
---|
474 |
|
---|
475 | private TaggingPresetReader() {
|
---|
476 | // Hide default constructor for utils classes
|
---|
477 | }
|
---|
478 | }
|
---|