com.twosigma.beaker.core.module.elfinder.impl.AbstractCommand.java Source code

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Here is the source code for com.twosigma.beaker.core.module.elfinder.impl.AbstractCommand.java

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/*
 *  Copyright 2014 TWO SIGMA OPEN SOURCE, LLC
 *
 *  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 com.twosigma.beaker.core.module.elfinder.impl;

import com.twosigma.beaker.core.module.elfinder.service.CommandExecutionContext;
import com.twosigma.beaker.core.module.elfinder.service.Command;
import com.twosigma.beaker.core.module.elfinder.service.FsItem;
import com.twosigma.beaker.core.module.elfinder.service.FsItemFilter;
import com.twosigma.beaker.core.module.elfinder.service.FsService;
import com.twosigma.beaker.core.module.elfinder.util.FsItemFilterUtils;
import com.twosigma.beaker.core.module.elfinder.util.FsServiceUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public abstract class AbstractCommand implements Command {
    public static Logger LOGGER = LoggerFactory.getLogger(AbstractCommand.class.getName());

    protected void addChildren(Map<String, FsItemEx> map, FsItemEx fsi, FsItemFilter filter) throws IOException {
        for (FsItemEx f : fsi.listChildren(filter)) {
            map.put(f.getHash(), f);
        }
    }

    protected void createAndCopy(FsItemEx src, FsItemEx dst) throws IOException {
        if (src.isFolder()) {
            createAndCopyFolder(src, dst);
        } else {
            createAndCopyFile(src, dst);
        }
    }

    protected void createAndCopyFile(FsItemEx src, FsItemEx dst) throws IOException {
        dst.createFile();
        InputStream is = src.openInputStream();
        dst.writeStream(is);
    }

    protected void createAndCopyFolder(FsItemEx src, FsItemEx dst) throws IOException {
        dst.createFolder();

        for (FsItemEx c : src.listChildren()) {
            if (c.isFolder()) {
                createAndCopyFolder(c, new FsItemEx(dst, c.getName()));
            } else {
                createAndCopyFile(c, new FsItemEx(dst, c.getName()));
            }
        }
    }

    @Override
    public void execute(CommandExecutionContext ctx) throws Exception {
        FsService fileService = ctx.getFsServiceFactory().getFileService(ctx.getRequest(), ctx.getServletContext());
        execute(fileService, ctx.getRequest(), ctx.getResponse(), ctx.getServletContext());
    }

    public abstract void execute(FsService fsService, HttpServletRequest request, HttpServletResponse response,
            ServletContext servletContext) throws Exception;

    protected Object[] files2JsonArray(HttpServletRequest request, Collection<FsItemEx> list) throws IOException {
        return files2JsonArray(request, list.toArray(new FsItemEx[list.size()]));
    }

    protected Object[] files2JsonArray(HttpServletRequest request, FsItemEx[] list) throws IOException {
        List<Map<String, Object>> los = new ArrayList<Map<String, Object>>();
        for (FsItemEx fi : list) {
            los.add(getFsItemInfo(request, fi));
        }

        return los.toArray();
    }

    protected FsItemEx findCwd(FsService fsService, String target) throws IOException {
        // current selected directory
        FsItemEx cwd = null;
        if (target != null) {
            cwd = findItem(fsService, target);
        }

        if (cwd == null)
            cwd = new FsItemEx(fsService.getVolumes()[0].getRoot(), fsService);

        return cwd;
    }

    protected FsItemEx findItem(FsService fsService, String hash) throws IOException {
        return FsServiceUtils.findItem(fsService, hash);
    }

    protected Map<String, Object> getFsItemInfo(HttpServletRequest request, FsItemEx fsi) throws IOException {
        Map<String, Object> info = new HashMap<String, Object>();
        info.put("hash", fsi.getHash());
        info.put("mime", fsi.getMimeType());
        info.put("ts", fsi.getLastModified() / 1000); // client will multiply this value by 1000, so we have to divide it now
        info.put("size", fsi.getSize());
        info.put("read", fsi.isReadable(fsi) ? 1 : 0);
        info.put("write", fsi.isWritable(fsi) ? 1 : 0);
        info.put("locked", fsi.isLocked(fsi) ? 1 : 0);
        info.put("fullpath", fsi.getFullPath());

        if (fsi.isRoot()) {
            info.put("name", fsi.getVolumnName());
            info.put("volumeid", fsi.getVolumeId());
        } else {
            info.put("name", fsi.getName());
            info.put("phash", fsi.getParent().getHash());
        }
        if (fsi.isFolder()) {
            info.put("dirs", 1);
        }
        String url = fsi.getURL();
        if (url != null) {
            info.put("url", url);
        }
        if (!StringUtils.isEmpty(fsi.getCssCls())) {
            info.put("csscls", fsi.getCssCls());
        }

        return info;
    }

    protected String getMimeDisposition(String mime) {
        String[] parts = mime.split("/");
        return ("image".equals(parts[0]) || "text".equals(parts[0]) ? "inline" : "attachments");
    }

    protected Map<String, Object> getOptions(HttpServletRequest request, FsItemEx cwd) throws IOException {
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("path", cwd.getPath());
        map.put("disabled", new String[0]);
        map.put("separator", "/");
        map.put("copyOverwrite", 1);
        map.put("archivers", new Object[0]);
        String url = cwd.getURL();
        if (url != null) {
            map.put("url", url);
        }

        return map;
    }
}