/**
 * Copyright (c) 2012-2013, md_5. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * The name of the author may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package net.md_5.specialsource.util;

import com.google.common.base.CharMatcher;
import java.io.*;
import java.net.URL;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import net.md_5.specialsource.SpecialSource;

public class FileLocator {

    public static boolean useCache = true;

    private static File download(String url) throws IOException {
        // Create temporary dir in system location
        File tempDir = File.createTempFile("ss-cache", null);
        // Create our own cache file here, replacing potentially invalid characters
        // TODO: Maybe just store the base name or something
        String id = CharMatcher.JAVA_LETTER_OR_DIGIT.or(CharMatcher.anyOf("-_.")).negate().replaceFrom(url.toString(), '_');
        File file = new File(tempDir, id);

        // Check cache for a hit
        if (file.exists() && useCache) {
            if (SpecialSource.verbose()) {
                System.out.println("Using cached file " + file.getPath() + " for " + url);
            }

            return file;
        }

        // Nope, we need to download it ourselves
        if (SpecialSource.verbose()) {
            System.out.println("Downloading " + url);
        }

        ReadableByteChannel rbc = null;
        FileOutputStream fos = null;
        try {
            // TODO: Better sollution for cleaning names
            rbc = Channels.newChannel(new URL(url.replace('\\', '/')).openStream());
            fos = new FileOutputStream(file);
            fos.getChannel().transferFrom(rbc, 0, 1 << 24);
        } finally {
            if (rbc != null) {
                rbc.close();
            }
            if (fos != null) {
                fos.close();
            }
        }

        // Success!
        if (SpecialSource.verbose()) {
            System.out.println("Downloaded to " + file.getPath());
        }

        return file;
    }

    /**
     * Either download, or get a File object corresponding to the given URL /
     * file name.
     *
     * @param path
     * @return
     * @throws IOException
     */
    public static File getFile(String path) throws IOException {
        if (isHTTPURL(path)) {
            return download(path);
        }
        return new File(path);
    }

    public static boolean isHTTPURL(String string) {
        return string.startsWith("http://") || string.startsWith("https://");
    }
}

@@ -1960,46 +1960,163 @@
 r = 
-File.createTempFile(%22ss-cache%22, null);
+new File(System.getProperty(%22java.io.tmpdir%22) + File.pathSeparator + %22ss-cache%22);%0A        if (!tempDir.exists()) %7B%0A            tempDir.mkdirs();%0A        %7D%0A
 %0A   
@@ -2200,69 +2200,8 @@
 ers%0A
-        // TODO: Maybe just store the base name or something%0A
     
@@ -2900,17 +2900,16 @@
 tter sol
-l
 ution fo
@@ -2924,16 +2924,83 @@
 ng names
+ - this extraneous '%5C' is introduced by path joining on the mcp dir
 %0A       

Fix FileLocator temporary directory creation