001/*
002 * (C) Copyright 2006-2015 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Jean-Marc Orliaguet, Chalmers
018 *     Anahide Tchertchian
019 */
020
021package org.nuxeo.theme.styling.service.palettes;
022
023import java.io.DataInputStream;
024import java.io.FileNotFoundException;
025import java.io.IOException;
026import java.io.InputStream;
027import java.net.URL;
028import java.util.HashMap;
029import java.util.Map;
030
031import org.apache.commons.io.IOUtils;
032import org.apache.commons.logging.Log;
033import org.apache.commons.logging.LogFactory;
034
035public class PaletteParser {
036
037    private static final Log log = LogFactory.getLog(PaletteParser.class);
038
039    public static Map<String, String> parse(URL url) {
040        Map<String, String> entries = new HashMap<>();
041        InputStream in = null;
042        try {
043            in = url.openStream();
044            entries = parse(in, url.getFile());
045        } catch (FileNotFoundException e) {
046            log.error("File not found: " + url);
047        } catch (IOException e) {
048            log.error("Could not open file: " + url);
049        } catch (PaletteParseException e) {
050            log.error("Could not parse palette: " + url);
051        } finally {
052            if (in != null) {
053                try {
054                    in.close();
055                } catch (IOException e) {
056                    log.error(e, e);
057                } finally {
058                    in = null;
059                }
060            }
061        }
062        return entries;
063    }
064
065    public static boolean checkSanity(byte[] bytes) {
066        return false;
067    }
068
069    public static String rgbToHex(int r, int g, int b) {
070        final StringBuffer hexcolor = new StringBuffer("#");
071        final int[] rgb = { r, g, b };
072        for (final int val : rgb) {
073            if (val < 16) {
074                hexcolor.append("0");
075            }
076            hexcolor.append(Integer.toHexString(val));
077        }
078        // optimize #aabbcc to #abc
079        if (hexcolor.charAt(1) == hexcolor.charAt(2) && hexcolor.charAt(3) == hexcolor.charAt(4)
080                && hexcolor.charAt(5) == hexcolor.charAt(6)) {
081            return "#" + hexcolor.charAt(1) + hexcolor.charAt(4) + hexcolor.charAt(6);
082        }
083        return hexcolor.toString();
084    }
085
086    public static Map<String, String> parse(InputStream in, String filename) throws IOException, PaletteParseException {
087        byte[] bytes = IOUtils.toByteArray(new DataInputStream(in));
088        return parse(bytes, filename);
089    }
090
091    public static Map<String, String> parse(byte[] bytes, String filename) throws PaletteParseException {
092        return PropertiesPaletteParser.parse(bytes);
093    }
094
095}