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Arduino/app/syntax/PdeKeywords.java
2005-08-25 21:06:28 +00:00

123 lines
4.1 KiB
Java

/* -*- mode: jde; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
PdeKeywords - handles text coloring and links to html reference
Part of the Processing project - http://processing.org
Copyright (c) 2004-05 Ben Fry and Casey Reas
Copyright (c) 2001-04 Massachusetts Institute of Technology
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package processing.app.syntax;
import processing.app.*;
import java.io.*;
import java.util.*;
public class PdeKeywords extends CTokenMarker {
// lookup table for the TokenMarker subclass, handles coloring
static KeywordMap keywordColoring;
// lookup table that maps keywords to their html reference pages
static Hashtable keywordToReference;
public PdeKeywords() {
super(false, getKeywords());
}
/**
* Handles loading of keywords file.
* <P>
* Uses getKeywords() method because that's part of the
* TokenMarker classes.
* <P>
* It is recommended that a # sign be used for comments
* inside keywords.txt.
*/
static public KeywordMap getKeywords() {
if (keywordColoring == null) {
try {
keywordColoring = new KeywordMap(false);
keywordToReference = new Hashtable();
InputStream input = Base.getStream("keywords.txt");
InputStreamReader isr = new InputStreamReader(input);
BufferedReader reader = new BufferedReader(isr);
String line = null;
while ((line = reader.readLine()) != null) {
//System.out.println("line is " + line);
// in case there's any garbage on the line
//if (line.trim().length() == 0) continue;
String pieces[] = Base.split(line, '\t');
if (pieces.length >= 2) {
//int tab = line.indexOf('\t');
// any line with no tab is ignored
// meaning that a comment is any line without a tab
//if (tab == -1) continue;
String keyword = pieces[0].trim();
//String keyword = line.substring(0, tab).trim();
//String second = line.substring(tab + 1);
//tab = second.indexOf('\t');
//String coloring = second.substring(0, tab).trim();
//String htmlFilename = second.substring(tab + 1).trim();
String coloring = pieces[1].trim();
if (coloring.length() > 0) {
// text will be KEYWORD or LITERAL
boolean isKey = (coloring.charAt(0) == 'K');
// KEYWORD1 -> 0, KEYWORD2 -> 1, etc
int num = coloring.charAt(coloring.length() - 1) - '1';
byte id = (byte)
((isKey ? Token.KEYWORD1 : Token.LITERAL1) + num);
//System.out.println("got " + (isKey ? "keyword" : "literal") +
// (num+1) + " for " + keyword);
keywordColoring.add(keyword, id);
}
if (pieces.length >= 3) {
String htmlFilename = pieces[2].trim();
if (htmlFilename.length() > 0) {
keywordToReference.put(keyword, htmlFilename);
}
}
}
}
reader.close();
} catch (Exception e) {
Base.showError("Problem loading keywords",
"Could not load keywords.txt,\n" +
"please re-install Arduino.", e);
System.exit(1);
}
}
return keywordColoring;
}
static public String getReference(String keyword) {
return (String) keywordToReference.get(keyword);
}
}