jars/icu4j-4_4_2-src/tools/misc/src/com/ibm/icu/dev/tool/layout/ScriptList.java

   1 /*\r
   2  *******************************************************************************\r
   3  * Copyright (C) 1998-2004, International Business Machines Corporation and    *\r
   4  * others. All Rights Reserved.                                                *\r
   5  *******************************************************************************\r
   6  *\r
   7  * Created on Dec 3, 2003\r
   8  *\r
   9  *******************************************************************************\r
  10  */\r
  11 package com.ibm.icu.dev.tool.layout;\r
  12 \r
  13 \r
  14 public class ScriptList\r
  15 {\r
  16     static class LangSysRecord extends TaggedRecord\r
  17     {\r
  18         private Feature[] features;\r
  19         private int featureCount;\r
  20         \r
  21         public LangSysRecord(String theLanguageTag)\r
  22         {\r
  23             super(theLanguageTag);\r
  24             \r
  25             features = new Feature[10];\r
  26             featureCount = 0;\r
  27         }\r
  28         \r
  29         public void addFeature(Feature feature)\r
  30         {\r
  31             if (featureCount > features.length) {\r
  32                 Feature[] newFeatures = new Feature[features.length + 5];\r
  33                 \r
  34                 System.arraycopy(features, 0, newFeatures, 0, features.length);\r
  35                 features = newFeatures;\r
  36             }\r
  37             \r
  38             features[featureCount++] = feature;\r
  39         }\r
  40         \r
  41          public void writeLangSysRecord(OpenTypeTableWriter writer)\r
  42         {\r
  43             writer.writeData(0);      // lookupOrder (must be NULL)\r
  44             writer.writeData(0xFFFF); // reqFeatureIndex (0xFFFF means none)\r
  45             \r
  46             writer.writeData(featureCount);\r
  47             \r
  48             for (int i = 0; i < featureCount; i += 1) {\r
  49                 writer.writeData(features[i].getFeatureIndex());\r
  50             }\r
  51         }\r
  52     }\r
  53     \r
  54     static class ScriptRecord extends TaggedRecord\r
  55     {\r
  56         private LangSysRecord[] langSysRecords;\r
  57         private int langSysCount;\r
  58         \r
  59         public ScriptRecord(String theScriptTag)\r
  60         {\r
  61             super(theScriptTag);\r
  62             langSysRecords = new LangSysRecord[10];\r
  63             langSysCount = 0;\r
  64         }\r
  65         \r
  66         public LangSysRecord findLangSysRecord(String languageTag)\r
  67         {\r
  68             for (int i = 0; i < langSysCount; i += 1) {\r
  69                 LangSysRecord langSysRecord = langSysRecords[i];\r
  70                 \r
  71                 if (langSysRecord.getTag().equals(languageTag)) {\r
  72                     return langSysRecord;\r
  73                 }\r
  74             }\r
  75             \r
  76             if (langSysCount >= langSysRecords.length) {\r
  77                 LangSysRecord[] newLangSysRecords = new LangSysRecord[langSysCount + 5];\r
  78                 \r
  79                 System.arraycopy(langSysRecords, 0, newLangSysRecords, 0, langSysRecords.length);\r
  80                 langSysRecords = newLangSysRecords;\r
  81             }\r
  82             \r
  83             LangSysRecord newLangSysRecord = new LangSysRecord(languageTag);\r
  84             langSysRecords[langSysCount] = newLangSysRecord;\r
  85             \r
  86             langSysCount += 1;\r
  87             return newLangSysRecord;\r
  88         }\r
  89         \r
  90         public void writeScriptRecord(OpenTypeTableWriter writer)\r
  91         {\r
  92             TaggedRecord.sort(langSysRecords, langSysCount);\r
  93             \r
  94             int scriptTableBase = writer.getOutputIndex();\r
  95             int firstLangSys = 0;\r
  96             \r
  97             writer.writeData(0); // default langSys offset (fixed later)\r
  98             \r
  99             if (langSysRecords[0].getTag().equals("(default)")) {\r
 100                 firstLangSys = 1;\r
 101             }\r
 102             \r
 103             writer.writeData(langSysCount - firstLangSys);\r
 104             \r
 105             int langSysOffset = writer.getOutputIndex();\r
 106             \r
 107             for (int i = firstLangSys; i < langSysCount; i += 1) {\r
 108                 writer.writeTag(langSysRecords[i].getTag());\r
 109                 writer.writeData(0);\r
 110             }\r
 111             \r
 112             if (firstLangSys > 0) {\r
 113                 System.out.print(" (default)");\r
 114                 writer.fixOffset(scriptTableBase, scriptTableBase);\r
 115                 langSysRecords[0].writeLangSysRecord(writer);\r
 116             }\r
 117             \r
 118             for (int i = firstLangSys; i < langSysCount; i += 1) {\r
 119                 // fix the offset in the langSysRecordArray.\r
 120                 // The "+2" skips over the tag and the "+3"\r
 121                 // skips to the next langSysRecord entry\r
 122                 writer.fixOffset(langSysOffset + 2, scriptTableBase);\r
 123                 langSysOffset += 3;\r
 124                 \r
 125                 System.out.print(" '" + langSysRecords[i].getTag() + "'");\r
 126                 langSysRecords[i].writeLangSysRecord(writer);\r
 127             }\r
 128         }\r
 129     }\r
 130     \r
 131     private ScriptRecord[] scriptRecords;\r
 132     private int scriptCount;\r
 133     \r
 134     public ScriptList()\r
 135     {\r
 136         scriptRecords = new ScriptRecord[10];\r
 137         scriptCount = 0;\r
 138     }\r
 139     \r
 140     private LangSysRecord findLangSysRecord(String scriptTag, String languageTag)\r
 141     {\r
 142         for (int i = 0; i < scriptCount; i += 1) {\r
 143             ScriptRecord scriptRecord = scriptRecords[i];\r
 144             \r
 145             if (scriptRecord.getTag().equals(scriptTag)) {\r
 146                  return scriptRecord.findLangSysRecord(languageTag);\r
 147             }\r
 148         }\r
 149         \r
 150         if (scriptCount >= scriptRecords.length) {\r
 151             ScriptRecord[] newScriptRecords = new ScriptRecord[scriptCount + 5];\r
 152             \r
 153             System.arraycopy(scriptRecords, 0, newScriptRecords, 0, scriptRecords.length);\r
 154             scriptRecords = newScriptRecords;\r
 155         }\r
 156         \r
 157         ScriptRecord newScriptRecord = new ScriptRecord(scriptTag);\r
 158         scriptRecords[scriptCount] = newScriptRecord;\r
 159         \r
 160         scriptCount += 1;\r
 161         return newScriptRecord.findLangSysRecord(languageTag);\r
 162     }\r
 163     \r
 164     public void addFeature(String scriptTag, String languageTag, Feature feature)\r
 165     {\r
 166         LangSysRecord langSysRecord = findLangSysRecord(scriptTag, languageTag);\r
 167         \r
 168         langSysRecord.addFeature(feature);\r
 169     }\r
 170     \r
 171     public void writeScriptList(OpenTypeTableWriter writer)\r
 172     {\r
 173         System.out.println("writing script list...");\r
 174         \r
 175         int scriptListBase = writer.getOutputIndex();\r
 176         \r
 177         TaggedRecord.sort(scriptRecords, scriptCount);\r
 178         writer.writeData(scriptCount);\r
 179         \r
 180         int scriptRecordOffset = writer.getOutputIndex();\r
 181         \r
 182         for (int i = 0; i < scriptCount; i += 1) {\r
 183             writer.writeTag(scriptRecords[i].getTag());\r
 184             writer.writeData(0);\r
 185         }\r
 186         \r
 187         for (int i = 0; i < scriptCount; i += 1) {\r
 188             // fix the offset in the scriptRecordArray.\r
 189             // The "+2" skips over the tag and the "+3"\r
 190             // skips to the next scriptRecord entry\r
 191             writer.fixOffset(scriptRecordOffset + 2, scriptListBase);\r
 192             scriptRecordOffset += 3;\r
 193             \r
 194             System.out.print("  script '" + scriptRecords[i].getTag() + "':");\r
 195             scriptRecords[i].writeScriptRecord(writer);\r
 196             System.out.println();\r
 197         }\r
 198     }\r
 199 }\r
 200