/*
* Copyright 2004-2014 SmartBear Software
*
* Licensed under the EUPL, Version 1.1 or - as soon as they will be approved by the European Commission - subsequent
* versions of the EUPL (the "Licence");
* You may not use this work except in compliance with the Licence.
* You may obtain a copy of the Licence at:
*
* http://ec.europa.eu/idabc/eupl
*
* Unless required by applicable law or agreed to in writing, software distributed under the Licence is
* distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the Licence for the specific language governing permissions and limitations
* under the Licence.
*/
package org.syntax.jedit.tokenmarker;
import javax.swing.text.Segment;
import org.syntax.jedit.SyntaxUtilities;
/**
* 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;
}
}