/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cn.hadcn.davinci.image.base;

import android.widget.ImageView;

import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.io.Reader;
import java.io.StringWriter;
import java.nio.charset.Charset;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import cn.hadcn.davinci.log.VinciLog;
import pl.droidsonroids.gif.GifDrawable;

public final class Util {
    public static final Charset US_ASCII = Charset.forName("US-ASCII");
    public static final Charset UTF_8 = Charset.forName("UTF-8");

    private Util() {
    }

    public static String readFully(Reader reader) throws IOException {
        try {
            StringWriter writer = new StringWriter();
            char[] buffer = new char[1024];
            int count;
            while ((count = reader.read(buffer)) != -1) {
                writer.write(buffer, 0, count);
            }
            return writer.toString();
        } finally {
            reader.close();
        }
    }

    /**
    * Deletes the contents of {@code dir}. Throws an IOException if any file
    * could not be deleted, or if {@code dir} is not a readable directory.
    */
    public static void deleteContents(File dir) throws IOException {
        File[] files = dir.listFiles();
        if (files == null) {
            throw new IOException("not a readable directory: " + dir);
        }
        for (File file : files) {
            if (file.isDirectory()) {
                deleteContents(file);
            }
            if (!file.delete()) {
                throw new IOException("failed to delete file: " + file);
            }
        }
    }

    public static void closeQuietly(/*Auto*/Closeable closeable) {
        if (closeable != null) {
            try {
                closeable.close();
            } catch (RuntimeException rethrown) {
                throw rethrown;
            } catch (Exception ignored) {
            }
        }
    }

    /**
    * Creates a unique cache key based on a url value
    * because file name in linux is limited
    * @param uri
    * 		uri to be used in key creation
    * @return
    * 		cache key value
    */
    public static String generateKey(String uri) {
        String regEx = "[^a-z0-9_-]";
        Pattern p = Pattern.compile(regEx);
        Matcher m = p.matcher(uri);
        String key = m.replaceAll("").trim();
        int length = key.length();
        if ( length <= 120 ) {  //limited by DisLruCache
            return key;
        } else {
            return key.substring(0, 120);
        }
    }

    public static boolean doGif(ImageView imageView, byte[] data) {
        if ( data[0] == 'G' && data[1] == 'I' && data[2] == 'F') {
            try {
                GifDrawable gifDrawable = new GifDrawable(data);
                imageView.setImageDrawable(gifDrawable);
                return true;
            } catch (Throwable e) {
                VinciLog.w("pl.droidsonroids.gif.GifDrawable not found");
            }
        }
        return false;
    }
}

@@ -2856,16 +2856,19 @@
 = %22%5B%5Ea-z
+A-Z
 0-9_-%5D%22;

change key generated rule