browsercommandlexer.java

Gmail API for Java 一个gmail信箱的客户端

/* The following code was generated by JFlex 1.4 on 14.10.04 17:20 */

/* BrowserCommandLexer.java is a generated file.  You probably want to
 * edit BrowserCommandLexer to make changes.  Use JFlex to generate it.
 * JFlex may be obtained from
 * <a href="http://www.jflex.de">the JFlex website</a>.
 * Jflex 1.4 or later is required.
 * Run:<br>
 * jflex BrowserCommandLexer<br>
 * You will then have a file called BrowserCommandLexer.java
 */

/*
 * Tokenize a command line into application and arguments.
 * Copyright (C) 2001-2004 Stephen Ostermiller
 * http://ostermiller.org/contact.pl?regarding=Java+Utilities
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * See COPYING.TXT for details.
 */

package com.Ostermiller.util;
import java.io.*;

/**
 * Tokenize a command line into application and arguments.
 *
 * @author Stephen Ostermiller http://ostermiller.org/contact.pl?regarding=Java+Utilities
 * @since ostermillerutils 1.00.00
 */

class BrowserCommandLexer {

  /** This character denotes the end of file */
  private static final int YYEOF = -1;

  /** initial size of the lookahead buffer */
  private static final int ZZ_BUFFERSIZE = 16384;

  /** lexical states */
  private static final int YYINITIAL = 0;

  /** 
   * Translates characters to character classes
   */
  private static final String ZZ_CMAP_PACKED = 
    "\11\0\2\2\1\0\2\2\22\0\1\2\1\0\1\3\36\0\1\0"+
    "\32\0\1\1\uffa3\0";

  /** 
   * Translates characters to character classes
   */
  private static final char [] ZZ_CMAP = zzUnpackCMap(ZZ_CMAP_PACKED);

  /** 
   * Translates DFA states to action switch labels.
   */
  private static final int [] ZZ_ACTION = zzUnpackAction();

  private static final String ZZ_ACTION_PACKED_0 =
    "\2\1\2\2\1\1\3\0\1\3\1\1\1\3\1\0"+
    "\2\3";

  private static int [] zzUnpackAction() {
    int [] result = new int[14];
    int offset = 0;
    offset = zzUnpackAction(ZZ_ACTION_PACKED_0, offset, result);
    return result;
  }

  private static int zzUnpackAction(String packed, int offset, int [] result) {
    int i = 0;       /* index in packed string  */
    int j = offset;  /* index in unpacked array */
    int l = packed.length();
    while (i < l) {
      int count = packed.charAt(i++);
      int value = packed.charAt(i++);
      do result[j++] = value; while (--count > 0);
    }
    return j;
  }


  /** 
   * Translates a state to a row index in the transition table
   */
  private static final int [] ZZ_ROWMAP = zzUnpackRowMap();

  private static final String ZZ_ROWMAP_PACKED_0 =
    "\0\0\0\4\0\10\0\14\0\20\0\10\0\24\0\30"+
    "\0\4\0\34\0\20\0\40\0\14\0\30";

  private static int [] zzUnpackRowMap() {
    int [] result = new int[14];
    int offset = 0;
    offset = zzUnpackRowMap(ZZ_ROWMAP_PACKED_0, offset, result);
    return result;
  }

  private static int zzUnpackRowMap(String packed, int offset, int [] result) {
    int i = 0;  /* index in packed string  */
    int j = offset;  /* index in unpacked array */
    int l = packed.length();
    while (i < l) {
      int high = packed.charAt(i++) << 16;
      result[j++] = high | packed.charAt(i++);
    }
    return j;
  }

  /** 
   * The transition table of the DFA
   */
  private static final int [] ZZ_TRANS = zzUnpackTrans();

  private static final String ZZ_TRANS_PACKED_0 =
    "\1\2\1\3\1\4\1\5\1\2\1\6\1\0\5\2"+
    "\4\0\1\5\1\7\1\10\1\11\1\5\1\12\1\5"+
    "\1\13\1\10\1\14\1\10\1\15\1\5\1\7\1\10"+
    "\1\13\1\10\1\14\1\10\1\16";

  private static int [] zzUnpackTrans() {
    int [] result = new int[36];
    int offset = 0;
    offset = zzUnpackTrans(ZZ_TRANS_PACKED_0, offset, result);
    return result;
  }

  private static int zzUnpackTrans(String packed, int offset, int [] result) {
    int i = 0;       /* index in packed string  */
    int j = offset;  /* index in unpacked array */
    int l = packed.length();
    while (i < l) {
      int count = packed.charAt(i++);
      int value = packed.charAt(i++);
      value--;
      do result[j++] = value; while (--count > 0);
    }
    return j;
  }


  /* error codes */
  private static final int ZZ_UNKNOWN_ERROR = 0;
  private static final int ZZ_NO_MATCH = 1;
  private static final int ZZ_PUSHBACK_2BIG = 2;

  /* error messages for the codes above */
  private static final String ZZ_ERROR_MSG[] = {
    "Unkown internal scanner error",
    "Error: could not match input",
    "Error: pushback value was too large"
  };

  /**
   * ZZ_ATTRIBUTE[aState] contains the attributes of state <code>aState</code>
   */
  private static final int [] ZZ_ATTRIBUTE = zzUnpackAttribute();

  private static final String ZZ_ATTRIBUTE_PACKED_0 =
    "\3\1\1\11\1\1\3\0\3\1\1\0\1\11\1\1";

  private static int [] zzUnpackAttribute() {
    int [] result = new int[14];
    int offset = 0;
    offset = zzUnpackAttribute(ZZ_ATTRIBUTE_PACKED_0, offset, result);
    return result;
  }

  private static int zzUnpackAttribute(String packed, int offset, int [] result) {
    int i = 0;       /* index in packed string  */
    int j = offset;  /* index in unpacked array */
    int l = packed.length();
    while (i < l) {
      int count = packed.charAt(i++);
      int value = packed.charAt(i++);
      do result[j++] = value; while (--count > 0);
    }
    return j;
  }

  /** the input device */
  private java.io.Reader zzReader;

  /** the current state of the DFA */
  private int zzState;

  /** the current lexical state */
  private int zzLexicalState = YYINITIAL;

  /** this buffer contains the current text to be matched and is
      the source of the yytext() string */
  private char zzBuffer[] = new char[ZZ_BUFFERSIZE];

  /** the textposition at the last accepting state */
  private int zzMarkedPos;

  /** the textposition at the last state to be included in yytext */
  private int zzPushbackPos;

  /** the current text position in the buffer */
  private int zzCurrentPos;

  /** startRead marks the beginning of the yytext() string in the buffer */
  private int zzStartRead;

  /** endRead marks the last character in the buffer, that has been read
      from input */
  private int zzEndRead;

  /** number of newlines encountered up to the start of the matched text */
  private int yyline;

  /** the number of characters up to the start of the matched text */
  private int yychar;

  /**
   * the number of characters from the last newline up to the start of the 
   * matched text
   */
  private int yycolumn;

  /** 
   * zzAtBOL == true <=> the scanner is currently at the beginning of a line
   */
  private boolean zzAtBOL = true;

  /** zzAtEOF == true <=> the scanner is at the EOF */
  private boolean zzAtEOF;

  /* user code: */
	/**
	 * Prints out tokens and line numbers from a file or System.in.
	 * If no arguments are given, System.in will be used for input.
	 * If more arguments are given, the first argument will be used as
	 * the name of the file to use as input
	 *
	 * @param args program arguments, of which the first is a filename
	 *
	 * @since ostermillerutils 1.00.00
	 */
	private static void main(String[] args) {
		InputStream in;
		try {
			if (args.length > 0){
				File f = new File(args[0]);
				if (f.exists()){
					if (f.canRead()){
						in = new FileInputStream(f);
					} else {
						throw new IOException("Could not open " + args[0]);
					}
				} else {
					throw new IOException("Could not find " + args[0]);
				}
			} else {
				in = System.in;
			}
			BrowserCommandLexer shredder = new BrowserCommandLexer(in);
			String t;
			while ((t = shredder.getNextToken()) != null) {
				System.out.println(t);
			}
		} catch (IOException e){
			System.out.println(e.getMessage());
		}
	}
    
    /**
     * Return the next token from the browser command.
     *
     * @return the next token
     * @throws IOException if an error occurs while reading the command.
     */
    public String getNextToken() throws IOException {
        return getToken();
    }

	private static String unescape(String s){
		StringBuffer sb = new StringBuffer(s.length());
		for (int i=0; i<s.length(); i++){
			if (s.charAt(i) == '\\' && i<s.length()){
				i++;
			}
			sb.append(s.charAt(i));
		}
		return sb.toString();
	}


  /**
   * Creates a new scanner
   * There is also a java.io.InputStream version of this constructor.
   *
   * @param   in  the java.io.Reader to read input from.
   */
  BrowserCommandLexer(java.io.Reader in) {
    this.zzReader = in;