source: gli/trunk/src/org/greenstone/gatherer/remote/ZipCollectionConfigurations.java@ 19207

package org.greenstone.gatherer.remote;

import java.io.*;
import java.util.zip.*;


/**
 */
public class ZipCollectionConfigurations
{
    static public void main(String[] args)
    {
    if (args.length != 4) {
        System.err.println("Usage: ZipCollectionConfigurations <zip-file> <collect-directory-path> <user-name> <user-groups>");
        return;
    }

    String zip_file_path = args[0];
    String collect_directory_path = args[1];
    String user_name = args[2];
    String user_groups = args[3];

    if (!collect_directory_path.endsWith(File.separator)) {
        collect_directory_path += File.separator;
    }
    File collect_directory = new File(collect_directory_path);

    try {
        ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zip_file_path));
        ZipTools.ZipFilter collection_etc_zip_filter = new CollectionEtcZipFilter();
        ZipTools.ZipFilter collection_metadata_zip_filter = new CollectionMetadataZipFilter();

        addUserAccessibleCollections(collect_directory_path, "", collect_directory, zos, 
                     collection_etc_zip_filter, collection_metadata_zip_filter,
                     user_name, user_groups);

        

        zos.putNextEntry(new ZipEntry(".gli"));
        zos.close();
    }
    catch (Exception exception) {
        exception.printStackTrace();
    }
    }

    static private void addUserAccessibleCollections(String toplevel_path,        // remains unchanged
                             String relative_path,        // grows with each level of recursion
                             File collect_directory,      // current collection (group) directory being considered
                             ZipOutputStream zos, 
                             ZipTools.ZipFilter collection_etc_zip_filter,
                             ZipTools.ZipFilter collection_metadata_zip_filter,
                             String user_name,
                             String user_groups) 
    {
    
    if(!relative_path.equals("")) {
        relative_path += File.separator;
    }
    
    // Add the etc and metadata directories from each of the collections the user has access to
    File[] collection_directories = collect_directory.listFiles();
    for (int i = 0; i < collection_directories.length; i++) {
        if (collection_directories[i].isDirectory()) {
        String collection_name = collection_directories[i].getName();
        if (checkAccess(collection_name, user_name, user_groups)) {
            
            String etc_relative_path = relative_path + collection_directories[i].getName() + File.separator + "etc";
            ZipTools.addFileToZip(zos, toplevel_path, etc_relative_path, collection_etc_zip_filter);
            
            // The "metadata" directory may not exist (non-GLI collections)
            String metadata_relative_path = relative_path + collection_directories[i].getName() + File.separator + "metadata";
            File metadata_directory = new File(collect_directory.getAbsolutePath() + File.separator + metadata_relative_path);
            if (metadata_directory.exists()) {
            ZipTools.addFileToZip(zos, toplevel_path, metadata_relative_path, collection_metadata_zip_filter);
            } 
            else { // if a collection contains no metadata directory, then check if it is a collectgroup
            
            // read from collection config file in etc folder
            File config_file = new File(collection_directories[i], "etc"+File.separator+"collect.cfg");
            if(config_file.exists()) {
                try {
                BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(config_file)));
                String line = null;
                while((line = reader.readLine()) != null) { // read lines and look for: collectgroup true
                    line = line.trim(); // need to ignore surrounding whitespace
                    if(line.startsWith("collectgroup") && line.endsWith("true")) {
                    // if collectgroup, then recurse on current folder
                    addUserAccessibleCollections(toplevel_path, relative_path+collection_directories[i].getName(), collection_directories[i],
                                     zos, collection_etc_zip_filter, collection_metadata_zip_filter,
                                     user_name, user_groups);
                    }
                }
                
                reader.close();
                } catch(Exception e) {
                System.err.println("Exception reading from file " + config_file + ": " + e);
                e.printStackTrace();
                }
            }               
            }
        }
        }
    }
    }


    static private boolean checkAccess(String collection_name, String user_name, String user_groups)
    {
    String[] user_groups_array = user_groups.split(",");
    for (int i = 0; i < user_groups_array.length; i++) {
        if (user_groups_array[i].equals("all-collections-editor")) {
        return true;
        }
        if (user_groups_array[i].equals("personal-collections-editor") && collection_name.startsWith(user_name + "-")) {
        return true;
        }
        if (user_groups_array[i].equals(collection_name + "-collection-editor")) {
        return true;
        }
    }

    return false;
    }


    static private class CollectionEtcZipFilter
    extends ZipTools.NullZipFilter
    {
    public boolean shouldIncludeFile(String relative_file_path)
    {
        // Only collect.cfg files are included
        if (relative_file_path.endsWith("collect.cfg")){
        return (relative_file_path.equals("collect.cfg") || relative_file_path.endsWith(File.separator + "collect.cfg"));
        }

        // Only collectConfig.xml files are included
        if (relative_file_path.endsWith("collectionConfig.xml")){
        return (relative_file_path.equals("collectionConfig.xml") || relative_file_path.endsWith(File.separator + "collectionConfig.xml"));
        }
        return false;
    }
    }


    static private class CollectionMetadataZipFilter
    extends ZipTools.NullZipFilter
    {
    public boolean shouldIncludeFileContent(String relative_file_path)
    {
        // We don't include content for any of the metadata set files
        return false;
    }
    }
}