/* * ShellScriptTokenMarker.java - Shell script token marker * Copyright (C) 1998, 1999 Slava Pestov * * You may use and modify this package for any purpose. Redistribution is * permitted, in both source and binary form, provided that this notice * remains intact in all source distributions of this package. */package org.syntax.jedit.tokenmarker;import org.syntax.jedit.*;import javax.swing.text.Segment;/** * Shell script token marker. * * @author Slava Pestov * @version $Id: ShellScriptTokenMarker.java,v 1.18 1999/12/13 03:40:30 sp Exp $ */public class ShellScriptTokenMarker extends TokenMarker{	// public members	public static final byte LVARIABLE = Token.INTERNAL_FIRST;	public byte markTokensImpl(byte token, Segment line, int lineIndex)	{		char[] array = line.array;		byte cmdState = 0; // 0 = space before command, 1 = inside				// command, 2 = after command		int offset = line.offset;		int lastOffset = offset;		int length = line.count + offset;		if(token == Token.LITERAL1 && lineIndex != 0			&& lineInfo[lineIndex - 1].obj != null)		{			String str = (String)lineInfo[lineIndex - 1].obj;			if(str != null && str.length() == line.count				&& SyntaxUtilities.regionMatches(false,line,				offset,str))			{				addToken(line.count,Token.LITERAL1);				return Token.NULL;			}			else			{				addToken(line.count,Token.LITERAL1);				lineInfo[lineIndex].obj = str;				return Token.LITERAL1;			}		}		boolean backslash = false;loop:		for(int i = offset; i < length; i++)		{			int i1 = (i+1);			char c = array[i];			if(c == '\\')			{				backslash = !backslash;				continue;			}			switch(token)			{			case Token.NULL:				switch(c)				{				case ' ': case '\t': case '(': case ')':					backslash = false;					if(cmdState == 1/*insideCmd*/)					{						addToken(i - lastOffset,Token.KEYWORD1);						lastOffset = i;						cmdState = 2; /*afterCmd*/					}					break;				case '=':					backslash = false;					if(cmdState == 1/*insideCmd*/)					{						addToken(i - lastOffset,token);						lastOffset = i;						cmdState = 2; /*afterCmd*/					}					break;				case '&': case '|': case ';':					if(backslash)						backslash = false;					else						cmdState = 0; /*beforeCmd*/					break;				case '#':					if(backslash)						backslash = false;					else					{						addToken(i - lastOffset,token);						addToken(length - i,Token.COMMENT1);						lastOffset = length;						break loop;					}					break;				case '$':					if(backslash)						backslash = false;					else					{						addToken(i - lastOffset,token);						cmdState = 2; /*afterCmd*/						lastOffset = i;						if(length - i >= 2)						{							switch(array[i1])							{							case '(':								continue;							case '{':								token = LVARIABLE;								break;							default:								token = Token.KEYWORD2;								break;							}						}						else							token = Token.KEYWORD2;					}					break;				case '"':					if(backslash)						backslash = false;					else					{						addToken(i - lastOffset,token);						token = Token.LITERAL1;						lineInfo[lineIndex].obj = null;						cmdState = 2; /*afterCmd*/						lastOffset = i;					}					break;				case '\'':					if(backslash)						backslash = false;					else					{						addToken(i - lastOffset,token);						token = Token.LITERAL2;						cmdState = 2; /*afterCmd*/						lastOffset = i;					}					break;				case '<':					if(backslash)						backslash = false;					else					{						if(length - i > 1 && array[i1] == '<')						{							addToken(i - lastOffset,								token);							token = Token.LITERAL1;							lastOffset = i;							lineInfo[lineIndex].obj =								new String(array,i + 2,									length - (i+2));						}					}					break;				default:					backslash = false;					if(Character.isLetter(c))					{						if(cmdState == 0 /*beforeCmd*/)						{							addToken(i - lastOffset,token);							lastOffset = i;							cmdState++; /*insideCmd*/						}					}					break;				}				break;			case Token.KEYWORD2:				backslash = false;				if(!Character.isLetterOrDigit(c) && c != '_')				{					if(i != offset && array[i-1] == '$')					{						addToken(i1 - lastOffset,token);						lastOffset = i1;						token = Token.NULL;						continue;					}					else					{						addToken(i - lastOffset,token);						lastOffset = i;						token = Token.NULL;					}				}				break;			case Token.LITERAL1:				if(backslash)					backslash = false;				else if(c == '"')				{					addToken(i1 - lastOffset,token);					cmdState = 2; /*afterCmd*/					lastOffset = i1;					token = Token.NULL;				}				else					backslash = false;				break;			case Token.LITERAL2:				if(backslash)					backslash = false;				else if(c == '\'')				{					addToken(i1 - lastOffset,Token.LITERAL1);					cmdState = 2; /*afterCmd*/					lastOffset = i1;					token = Token.NULL;				}				else					backslash = false;				break;			case LVARIABLE:				backslash = false;				if(c == '}')				{					addToken(i1 - lastOffset,Token.KEYWORD2);					lastOffset = i1;					token = Token.NULL;				}				break;			default:				throw new InternalError("Invalid state: " + token);			}		}		switch(token)		{		case Token.NULL:			if(cmdState == 1)				addToken(length - lastOffset,Token.KEYWORD1);			else				addToken(length - lastOffset,token);			break;		case Token.LITERAL2:			addToken(length - lastOffset,Token.LITERAL1);			break;		case Token.KEYWORD2:			addToken(length - lastOffset,token);			token = Token.NULL;			break;		case LVARIABLE:			addToken(length - lastOffset,Token.INVALID);			token = Token.NULL;			break;		default:			addToken(length - lastOffset,token);			break;		}		return token;	}}