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/* -*- mode: java; 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) 2004-06 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 cc.arduino.contributions.libraries.ContributedLibrary;

import org.apache.commons.compress.utils.IOUtils;

import org.fife.ui.rsyntaxtextarea.TokenMap;

import org.fife.ui.rsyntaxtextarea.TokenTypes;

import processing.app.Base;

import processing.app.BaseNoGui;

import processing.app.legacy.PApplet;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.InputStreamReader;

import java.util.HashMap;

import java.util.Map;

import java.util.regex.Pattern;

public class PdeKeywords {

private static final Map<String, Integer> KNOWN_TOKEN_TYPES = new HashMap<String, Integer>();

private static final Pattern ALPHA = Pattern.compile("\\w");

static {

KNOWN_TOKEN_TYPES.put("RESERVED_WORD", TokenTypes.RESERVED_WORD);

KNOWN_TOKEN_TYPES.put("RESERVED_WORD_2", TokenTypes.RESERVED_WORD_2);

KNOWN_TOKEN_TYPES.put("VARIABLE", TokenTypes.VARIABLE);

KNOWN_TOKEN_TYPES.put("OPERATOR", TokenTypes.OPERATOR);

KNOWN_TOKEN_TYPES.put("DATA_TYPE", TokenTypes.DATA_TYPE);

KNOWN_TOKEN_TYPES.put("LITERAL_BOOLEAN", TokenTypes.LITERAL_BOOLEAN);

KNOWN_TOKEN_TYPES.put("LITERAL_CHAR", TokenTypes.LITERAL_CHAR);

}

// lookup table for the TokenMarker subclass, handles coloring

private final TokenMap keywordTokenType;

private final Map<String, String> keywordOldToken;

private final Map<String, String> keywordTokenTypeAsString;

// lookup table that maps keywords to their html reference pages

private final Map<String, String> keywordToReference;

public PdeKeywords() {

this.keywordTokenType = new TokenMap();

this.keywordOldToken = new HashMap<String, String>();

this.keywordTokenTypeAsString = new HashMap<String, String>();

this.keywordToReference = new HashMap<String, String>();

}

/**

* 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.

*/

public void reload() {

try {

parseKeywordsTxt(new File(BaseNoGui.getContentFile("lib"), "keywords.txt"));

for (ContributedLibrary lib : Base.getLibraries()) {

File keywords = new File(lib.getInstalledFolder(), "keywords.txt");

if (keywords.exists()) {

parseKeywordsTxt(keywords);

}

}

} catch (Exception e) {

Base.showError("Problem loading keywords", "Could not load keywords.txt,\nplease re-install Arduino.", e);

System.exit(1);

}

}

private void parseKeywordsTxt(File input) throws Exception {

BufferedReader reader = null;

try {

reader = new BufferedReader(new InputStreamReader(new FileInputStream(input)));

String line;

while ((line = reader.readLine()) != null) {

//System.out.println("line is " + line);

// in case there's any garbage on the line

line = line.trim();

if (line.length() == 0 || line.startsWith("#")) {

continue;

}

String pieces[] = PApplet.split(line, '\t');

String keyword = pieces[0].trim();

if (pieces.length >= 2) {

keywordOldToken.put(keyword, pieces[1]);

}

if (pieces.length >= 3) {

parseHTMLReferenceFileName(pieces[2], keyword);

}

if (pieces.length >= 4) {

parseRSyntaxTextAreaTokenType(pieces[3], keyword);

}

}

fillMissingTokenType();

} finally {

IOUtils.closeQuietly(reader);

}

}

private void fillMissingTokenType() {

for (Map.Entry<String, String> oldTokenEntry : keywordOldToken.entrySet()) {

String keyword = oldTokenEntry.getKey();

if (!keywordTokenTypeAsString.containsKey(keyword)) {

if ("KEYWORD1".equals(oldTokenEntry.getValue())) {

parseRSyntaxTextAreaTokenType("DATA_TYPE", keyword);

} else {

parseRSyntaxTextAreaTokenType("FUNCTION", keyword);

}

}

}

}

private void parseRSyntaxTextAreaTokenType(String tokenTypeAsString, String keyword) {

if (!ALPHA.matcher(keyword).find()) {

return;

}

if (KNOWN_TOKEN_TYPES.containsKey(tokenTypeAsString)) {

keywordTokenType.put(keyword, KNOWN_TOKEN_TYPES.get(tokenTypeAsString));

keywordTokenTypeAsString.put(keyword, tokenTypeAsString);

} else {

keywordTokenType.put(keyword, TokenTypes.FUNCTION);

keywordTokenTypeAsString.put(keyword, "FUNCTION");

}

}

private void parseHTMLReferenceFileName(String piece, String keyword) {

String htmlFilename = piece.trim();

if (htmlFilename.length() > 0) {

keywordToReference.put(keyword, htmlFilename);

}

}

public String getReference(String keyword) {

return keywordToReference.get(keyword);

}

public String getTokenTypeAsString(String keyword) {

return keywordTokenTypeAsString.get(keyword);

}

public int getTokenType(char[] array, int start, int end) {

return keywordTokenType.get(array, start, end);

}

}