/*
* ShellScriptTokenMarker.java - Shell script token marker
* Copyright (C) 1998, 1999 Slava Pestov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
package textarea.syntax;
import javax.swing.text.Segment;
/**
* Shell script token marker.
*
* @author Slava Pestov
* @version $Id$
*/
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;
}
}
/*
* ChangeLog:
* $Log$
* Revision 1.1 2001/09/07 02:47:50 davidmartinez
* Initial revision
*
* Revision 1.1.1.1 1999/10/20 00:09:23 david
* Initial Import
*
* Revision 1.2 1999/10/20 00:09:23 david
* Ran Dos2Unix on all the .java files within the textarea package.
*
* Revision 1.1.1.1 1999/10/18 15:00:24 david
* Initial Check-in
*
* Revision 1.17 1999/06/20 02:15:45 sp
* Syntax coloring optimizations
*
* Revision 1.16 1999/06/06 05:05:25 sp
* Search and replace tweaks, Perl/Shell Script mode updates
*
* Revision 1.15 1999/06/05 00:22:58 sp
* LGPL'd syntax package
*
* Revision 1.14 1999/06/03 08:24:14 sp
* Fixing broken CVS
*
* Revision 1.15 1999/05/31 08:11:10 sp
* Syntax coloring updates, expand abbrev bug fix
*
* Revision 1.14 1999/05/31 04:38:51 sp
* Syntax optimizations, HyperSearch for Selection added (Mike Dillon)
*
* Revision 1.13 1999/05/30 04:57:15 sp
* Perl mode started
*
* Revision 1.12 1999/05/03 04:28:01 sp
* Syntax colorizing bug fixing, console bug fix for Swing 1.1.1
*
* Revision 1.11 1999/04/27 06:53:38 sp
* JARClassLoader updates, shell script token marker update, token marker compiles
* now
*
* Revision 1.10 1999/04/22 06:03:26 sp
* Syntax colorizing change
*
* Revision 1.9 1999/04/19 05:38:20 sp
* Syntax API changes
*
* Revision 1.8 1999/03/12 23:51:00 sp
* Console updates, uncomment removed cos it's too buggy, cvs log tags added
*
*/