jars/icu4j-52_1/tools/misc/src/com/ibm/icu/dev/tool/translit/Trans.java

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