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

   1 /**\r
   2  *******************************************************************************\r
   3  * Copyright (C) 2001-2010, International Business Machines Corporation and    *\r
   4  * others. All Rights Reserved.                                                *\r
   5  *******************************************************************************\r
   6  */\r
   7 package com.ibm.icu.dev.tool.translit;\r
   8 \r
   9 import java.io.BufferedReader;\r
  10 import java.io.FileInputStream;\r
  11 import java.io.FileOutputStream;\r
  12 import java.io.IOException;\r
  13 import java.io.InputStreamReader;\r
  14 import java.io.OutputStreamWriter;\r
  15 import java.io.PrintWriter;\r
  16 \r
  17 import com.ibm.icu.text.Transliterator;\r
  18 \r
  19 /**\r
  20  * A command-line interface to the ICU4J transliterators.\r
  21  * @author Alan Liu\r
  22  */\r
  23 public class Trans {\r
  24 \r
  25     public static void main(String[] args) throws Exception {\r
  26         boolean isHTML = false;\r
  27         int pos = 0;\r
  28 \r
  29         String transName = null; // first untagged string is this\r
  30         String inText = null; // all other untagged strings are this\r
  31         String inName = null;\r
  32         String outName = null;\r
  33 \r
  34         while (pos < args.length) {\r
  35             if (args[pos].equals("-html")) {\r
  36                 isHTML = true;\r
  37             } else if (args[pos].equals("-i")) {\r
  38                 if (++pos == args.length) usage();\r
  39                 inName = args[pos];\r
  40             } else if (args[pos].equals("-o")) {\r
  41                 if (++pos == args.length) usage();\r
  42                 outName = args[pos];\r
  43             } else if (transName == null) {\r
  44                 transName = args[pos];\r
  45             } else {\r
  46                 if (inText == null) {\r
  47                     inText = args[pos];\r
  48                 } else {\r
  49                     inText = inText + " " + args[pos];\r
  50                 }\r
  51             }\r
  52             ++pos;\r
  53         }\r
  54 \r
  55         if (inText != null && inName != null) {\r
  56             usage();\r
  57         }\r
  58 \r
  59         Transliterator trans = Transliterator.getInstance(transName);\r
  60         BufferedReader in = null;\r
  61         if (inName != null) {\r
  62             in = new BufferedReader(new InputStreamReader(new FileInputStream(inName), "UTF8"));\r
  63         }\r
  64         PrintWriter out = null;\r
  65         if (outName != null) {\r
  66             out = new PrintWriter(new OutputStreamWriter(new FileOutputStream(outName), "UTF8"));\r
  67         } else {\r
  68             out = new PrintWriter(System.out);\r
  69         }\r
  70         trans(trans, inText, in, out, isHTML);\r
  71         out.close();\r
  72     }\r
  73 \r
  74     static void trans(Transliterator trans, String inText,\r
  75                       BufferedReader in, PrintWriter out, boolean isHTML) throws IOException {\r
  76         boolean inTag = false; // If true, we are within a <tag>\r
  77         for (;;) {\r
  78             String line = null;\r
  79             if (inText != null) {\r
  80                 line = inText;\r
  81                 inText = null;\r
  82             } else if (in != null) {\r
  83                 line = in.readLine();\r
  84             }\r
  85             if (line == null) {\r
  86                 break;\r
  87             }\r
  88             if (isHTML) {\r
  89                 // Pass tags between < and > unchanged\r
  90                 StringBuffer buf = new StringBuffer();\r
  91                 int right = -1;\r
  92                 if (inTag) {\r
  93                     right = line.indexOf('>');\r
  94                     if (right < 0) {\r
  95                         right = line.length()-1;\r
  96                     }\r
  97                     buf.append(line.substring(0, right+1));\r
  98                     if (DEBUG) System.out.println("*S:" + line.substring(0, right+1));\r
  99                     inTag = false;\r
 100                 }\r
 101                 for (;;) {\r
 102                     int left = line.indexOf('<', right+1);\r
 103                     if (left < 0) {\r
 104                         if (right < line.length()-1) {\r
 105                             buf.append(trans.transliterate(line.substring(right+1)));\r
 106                             if (DEBUG) System.out.println("T:" + line.substring(right+1));\r
 107                         }\r
 108                         break;\r
 109                     }\r
 110                     // Append transliterated segment right+1..left-1\r
 111                     buf.append(trans.transliterate(line.substring(right+1, left)));\r
 112                     if (DEBUG) System.out.println("T:" + line.substring(right+1, left));\r
 113                     right = line.indexOf('>', left+1);\r
 114                     if (right < 0) {\r
 115                         inTag = true;\r
 116                         buf.append(line.substring(left));\r
 117                         if (DEBUG) System.out.println("S:" + line.substring(left));\r
 118                         break;\r
 119                     }\r
 120                     buf.append(line.substring(left, right+1));\r
 121                     if (DEBUG) System.out.println("S:" + line.substring(left, right+1));\r
 122                 }\r
 123                 line = buf.toString();\r
 124             } else {\r
 125                 line = trans.transliterate(line);\r
 126             }\r
 127             out.println(line);\r
 128         }\r
 129     }\r
 130 \r
 131     static final boolean DEBUG = false;\r
 132 \r
 133     /**\r
 134      * Emit usage and die.\r
 135      */\r
 136     static void usage() {\r
 137         System.out.println("Usage: java com.ibm.icu.dev.tool.translit.Trans [-html] <trans> ( <input> | -i <infile>) [ -o <outfile> ]");\r
 138         System.out.println("<trans>   Name of transliterator");\r
 139         System.out.println("<input>   Text to transliterate");\r
 140         System.out.println("<infile>  Name of input file");\r
 141         System.out.println("<outfile> Name of output file");\r
 142         System.out.println("-html     Only transliterate text outside of <tags>");\r
 143         System.out.println("Input may come from the command line or a file.\n");\r
 144         System.out.println("Ouput may go to stdout or a file.\n");\r
 145         System.exit(0);\r
 146     }\r
 147 }\r