jars/icu4j-4_2_1-src/src/com/ibm/icu/dev/tool/translit/Trans.java

   1 /**\r
   2  *******************************************************************************\r
   3  * Copyright (C) 2001-2004, 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 com.ibm.icu.text.*;\r
  10 import java.io.*;\r
  11 \r
  12 /**\r
  13  * A command-line interface to the ICU4J transliterators.\r
  14  * @author Alan Liu\r
  15  */\r
  16 public class Trans {\r
  17 \r
  18     public static void main(String[] args) throws Exception {\r
  19         boolean isHTML = false;\r
  20         int pos = 0;\r
  21 \r
  22         String transName = null; // first untagged string is this\r
  23         String inText = null; // all other untagged strings are this\r
  24         String inName = null;\r
  25         String outName = null;\r
  26 \r
  27         while (pos < args.length) {\r
  28             if (args[pos].equals("-html")) {\r
  29                 isHTML = true;\r
  30             } else if (args[pos].equals("-i")) {\r
  31                 if (++pos == args.length) usage();\r
  32                 inName = args[pos];\r
  33             } else if (args[pos].equals("-o")) {\r
  34                 if (++pos == args.length) usage();\r
  35                 outName = args[pos];\r
  36             } else if (transName == null) {\r
  37                 transName = args[pos];\r
  38             } else {\r
  39                 if (inText == null) {\r
  40                     inText = args[pos];\r
  41                 } else {\r
  42                     inText = inText + " " + args[pos];\r
  43                 }\r
  44             }\r
  45             ++pos;\r
  46         }\r
  47 \r
  48         if (inText != null && inName != null) {\r
  49             usage();\r
  50         }\r
  51 \r
  52         Transliterator trans = Transliterator.getInstance(transName);\r
  53         BufferedReader in = null;\r
  54         if (inName != null) {\r
  55             in = new BufferedReader(new InputStreamReader(new FileInputStream(inName), "UTF8"));\r
  56         }\r
  57         PrintWriter out = null;\r
  58         if (outName != null) {\r
  59             out = new PrintWriter(new OutputStreamWriter(new FileOutputStream(outName), "UTF8"));\r
  60         } else {\r
  61             out = new PrintWriter(System.out);\r
  62         }\r
  63         trans(trans, inText, in, out, isHTML);\r
  64         out.close();\r
  65     }\r
  66 \r
  67     static void trans(Transliterator trans, String inText,\r
  68                       BufferedReader in, PrintWriter out, boolean isHTML) throws IOException {\r
  69         boolean inTag = false; // If true, we are within a <tag>\r
  70         for (;;) {\r
  71             String line = null;\r
  72             if (inText != null) {\r
  73                 line = inText;\r
  74                 inText = null;\r
  75             } else if (in != null) {\r
  76                 line = in.readLine();\r
  77             }\r
  78             if (line == null) {\r
  79                 break;\r
  80             }\r
  81             if (isHTML) {\r
  82                 // Pass tags between < and > unchanged\r
  83                 StringBuffer buf = new StringBuffer();\r
  84                 int right = -1;\r
  85                 if (inTag) {\r
  86                     right = line.indexOf('>');\r
  87                     if (right < 0) {\r
  88                         right = line.length()-1;\r
  89                     }\r
  90                     buf.append(line.substring(0, right+1));\r
  91                     if (DEBUG) System.out.println("*S:" + line.substring(0, right+1));\r
  92                     inTag = false;\r
  93                 }\r
  94                 for (;;) {\r
  95                     int left = line.indexOf('<', right+1);\r
  96                     if (left < 0) {\r
  97                         if (right < line.length()-1) {\r
  98                             buf.append(trans.transliterate(line.substring(right+1)));\r
  99                             if (DEBUG) System.out.println("T:" + line.substring(right+1));\r
 100                         }\r
 101                         break;\r
 102                     }\r
 103                     // Append transliterated segment right+1..left-1\r
 104                     buf.append(trans.transliterate(line.substring(right+1, left)));\r
 105                     if (DEBUG) System.out.println("T:" + line.substring(right+1, left));\r
 106                     right = line.indexOf('>', left+1);\r
 107                     if (right < 0) {\r
 108                         inTag = true;\r
 109                         buf.append(line.substring(left));\r
 110                         if (DEBUG) System.out.println("S:" + line.substring(left));\r
 111                         break;\r
 112                     }\r
 113                     buf.append(line.substring(left, right+1));\r
 114                     if (DEBUG) System.out.println("S:" + line.substring(left, right+1));\r
 115                 }\r
 116                 line = buf.toString();\r
 117             } else {\r
 118                 line = trans.transliterate(line);\r
 119             }\r
 120             out.println(line);\r
 121         }\r
 122     }\r
 123 \r
 124     static final boolean DEBUG = false;\r
 125 \r
 126     /**\r
 127      * Emit usage and die.\r
 128      */\r
 129     static void usage() {\r
 130         System.out.println("Usage: java com.ibm.icu.dev.tool.translit.Trans [-html] <trans> ( <input> | -i <infile>) [ -o <outfile> ]");\r
 131         System.out.println("<trans>   Name of transliterator");\r
 132         System.out.println("<input>   Text to transliterate");\r
 133         System.out.println("<infile>  Name of input file");\r
 134         System.out.println("<outfile> Name of output file");\r
 135         System.out.println("-html     Only transliterate text outside of <tags>");\r
 136         System.out.println("Input may come from the command line or a file.\n");\r
 137         System.out.println("Ouput may go to stdout or a file.\n");\r
 138         System.exit(0);\r
 139     }\r
 140 }\r