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1 package nabble.view.web.template;
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2
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3 import fschmidt.util.java.HtmlUtils;
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4 import nabble.model.Site;
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5 import nabble.modules.ModuleManager;
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6 import nabble.naml.compiler.Command;
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7 import nabble.naml.compiler.CommandSpec;
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8 import nabble.naml.compiler.CompileException;
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9 import nabble.naml.compiler.IPrintWriter;
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10 import nabble.naml.compiler.Interpreter;
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11 import nabble.naml.compiler.Macro;
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12 import nabble.naml.compiler.Meaning;
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13 import nabble.naml.compiler.Namespace;
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14 import nabble.naml.compiler.Program;
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15 import nabble.naml.compiler.Source;
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16 import nabble.naml.compiler.Usage;
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17
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18 import java.util.ArrayList;
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19 import java.util.HashMap;
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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 import java.util.regex.Matcher;
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24 import java.util.regex.Pattern;
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25
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26
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27 @Namespace(
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28 name = "macro_editor",
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29 global = false
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30 )
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31 public class MacroEditorNamespace {
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32
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33 private Site site;
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34 private String rootMacroName;
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35 private String[] baseClassArray;
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36 private final Macro macro;
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37
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38 private static class SaveResults {
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39 String error;
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40 String macroId;
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41 String base;
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42 String breadcrumbs;
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43 }
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44
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45 public MacroEditorNamespace(Site site, String meaningId, String base, String breadcrumbs) {
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46 this.site = site;
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47 this.baseClassArray = MacroSourceNamespace.buildBaseClassArray(base);
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48 this.rootMacroName = getRootMacroName(site.getProgram(), meaningId, base, breadcrumbs);
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49 if (meaningId == null) {
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50 macro = null;
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51 } else {
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52 Meaning meaning = site.getProgram().getMeaning(meaningId);
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53 if (meaning == null)
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54 throw new NullPointerException("Meaning is null for: " + meaningId);
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55 else if (!(meaning instanceof Macro))
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56 throw new NullPointerException("Meaning is not a macro: " + meaningId);
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57 macro = (Macro) meaning;
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58 }
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59 }
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60
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61 private String getRootMacroName(Program program, String meaningId, String base, String breadcrumbs) {
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62 if (breadcrumbs != null) {
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63 String firstMeaningId = breadcrumbs.split("-")[0];
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64 Meaning meaning = program.getMeaning(firstMeaningId);
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65 return meaning.getName();
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66 } else if (base != null && meaningId != null) {
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67 return program.getMeaning(meaningId).getName();
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68 }
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69 return null;
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70 }
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71
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72 public static final CommandSpec CONTENTS = new CommandSpec.Builder()
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73 .parameters("contents")
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74 .build();
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75
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76 public static final CommandSpec save = CONTENTS;
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77
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78 @Command public void save(IPrintWriter out, Interpreter interp) {
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79 String tweak = getContents(interp);
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80
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81 Map<String, String> originalTweaks = site.getCustomTweaks();
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82 Map<String, String> newTweaks = new HashMap<String, String>(originalTweaks);
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83 if (isEditingCustomTweak()) {
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84 String macroBody = macro.element.toString();
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85 for( Map.Entry<String,String> entry : originalTweaks.entrySet() ) {
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86 String filename = entry.getKey();
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87 String content = entry.getValue();
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88 int posStart = content.indexOf(macroBody);
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89 if (posStart >= 0) {
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90 SaveResults saveResults = saveTweak(tweak, originalTweaks, newTweaks, filename);
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91 out.print(HtmlUtils.toJson(saveResults));
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92 return;
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93 }
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94 }
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95 } else {
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96 String macroName = getMacroName(macro, tweak);
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97 if (macroName == null) {
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98 out.print("Error: You must specify the name of the macro.");
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99 return;
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100 }
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101 // tries to find a file with the name of the macro
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102 String file = newTweaks.get(macroName);
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103 String newFileContents = file == null? tweak : file + "\n\n" + tweak;
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104
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105 SaveResults saveResults = saveTweak(newFileContents, originalTweaks, newTweaks, macroName);
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106 out.print(HtmlUtils.toJson(saveResults));
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107 }
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108 }
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109
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110 private SaveResults saveTweak(String tweak, Map<String, String> originalTweaks, Map<String, String> newTweaks, String filename) {
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111 SaveResults saveResults = new SaveResults();
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112 try {
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113 Usage usage = saveAndCheck(newTweaks, filename, tweak);
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114 saveResults.macroId = getMacroId(filename, tweak);
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115 // If usage is not null, then it was found while saving the tweak.
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116 // We send this information back to the page so that the javascript
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117 // can send the user to a page with navigation links.
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118 if (usage != null) {
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119 saveResults.base = MacroSourceNamespace.asBaseParam(usage.baseIds());
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120 saveResults.breadcrumbs = MacroSourceNamespace.asBreadcrumbsParam(usage.macroPath()) ;
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121 }
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122 } catch(CompileException e) {
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123 site.setCustomTweaks(originalTweaks);
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124 saveResults.error = "Error: " + e.getMessage();
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125 }
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126 return saveResults;
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127 }
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128
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129 private String getMacroName(Macro macro, String tweak) {
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130 if (macro != null)
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131 return macro.getName();
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132 else {
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133 Pattern pattern = Pattern.compile("name=\"([^\"]+)\"");
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134 Matcher matcher = pattern.matcher(tweak);
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135 if (matcher.find())
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136 return matcher.group(1);
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137 else
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138 return null;
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139 }
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140 }
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141
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142 private Usage saveAndCheck(Map<String, String> newTweaks, String filename, String newFileContents)
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143 throws CompileException
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144 {
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145 newFileContents = trim(newFileContents);
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146 newTweaks.put(filename, newFileContents);
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147
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148 boolean isCompiledMacro = macro != null && site.getProgram().isCompiled(macro);
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149
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150 site.setCustomTweaks(newTweaks);
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151 if (rootMacroName != null) {
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152 try {
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153 // Tries to compile the macro
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154 site.getProgram().getTemplate(rootMacroName, this.baseClassArray);
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155 } catch (CompileException e) {
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156 if (isCompiledMacro)
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157 throw e;
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158 else {
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159 Program program = site.getProgram();
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160 // Let's try to find a usage for this macro for a better check
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161 if (!NabbleNamespace.isCompiledAll(program))
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162 CompileTest.compileAll(program);
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163
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164 Meaning m = program.getMeaning(macro.getId());
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165 Set<Usage> usages = program.getUsages(m);
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166 if (usages == null || usages.size() == 0)
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167 throw e;
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168 else {
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169 Usage usage = usages.iterator().next();
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170 program.getTemplate(usage.macroPath().get(0).getName(), usage.baseIds());
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171 return usage;
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172 }
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173 }
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174 }
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175 } else {
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176 // Simple XML validation
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177 site.getProgram().getTemplate("do_nothing");
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178 }
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179 return null;
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180 }
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181
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182 private String getMacroId(String filename, String macroBody) throws CompileException {
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183 Program program = site.getProgram();
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184 if (macro != null && program.getMeaning(macro.getId()) != null)
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185 return macro.getId();
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186 Macro m = program.getMacroWhichOverrides(macro);
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187 if (m != null)
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188 return m.getId();
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189 List<Source> sources = site.getProgram().getSources();
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190 for (Source s : sources) {
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191 if (s.id.contains(':'+filename)) {
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192 for (Macro mac : s.getMacros()) {
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193 if (macroBody.contains(mac.element.toString()))
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194 return mac.getId();
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195 }
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196 }
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197 }
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198 throw new RuntimeException("macroId not found");
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199 }
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200
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201 public static final CommandSpec revert = CommandSpec.NO_OUTPUT;
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202
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203 @Command public void revert(IPrintWriter out,Interpreter interp) {
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204 if (isEditingCustomTweak()) {
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205 String macroBody = macro.element.toString();
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206 Map<String, String> tweaks = site.getCustomTweaks();
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207 Map<String, String> reverted = new HashMap<String, String>(tweaks);
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208 for( Map.Entry<String,String> entry : tweaks.entrySet() ) {
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209 String name = entry.getKey();
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210 String content = entry.getValue();
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211 int posStart = content.indexOf(macroBody);
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212 if (posStart >= 0) {
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213 int posEnd = posStart + macroBody.length();
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214 String revertedContents = content.substring(0, posStart) + "\n" + content.substring(posEnd);
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215 if (trim(revertedContents).length() == 0)
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216 reverted.remove(name);
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217 else
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218 reverted.put(name, revertedContents);
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219 site.setCustomTweaks(reverted);
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220 break;
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221 }
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222 }
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223 } else
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224 throw new RuntimeException("Not a tweaked macro");
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225 }
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226
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227 private String getContents(Interpreter interp) {
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228 String c = interp.getArgString("contents");
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229 c = c.replaceAll("\\u2002", " "); // Converts any   into simple space (copy and paste issue)
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230 return c;
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231 }
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232
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233 private String trim(String s) {
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234 return s.replaceAll("(^\\s+)|(\\s+$)","");
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235 }
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236
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237 private boolean isEditingCustomTweak() {
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238 return macro != null && ModuleManager.isCustomTweak(macro.source);
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239 }
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240 }
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