Copy folder hierarchies between different Stores
/*
* @(#)populate.java 1.12 06/02/28
*
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* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
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import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.URLName;
import javax.mail.internet.MimeMessage;
/*
* Copy folder hierarchies between different Stores. This is a useful utility to
* populate new (and possibly empty) mail stores. Specify both the source and
* destination folders as URLs.
*
* @author John Mani @author Bill Shannon
*/
public class populate {
static boolean force = false;
static boolean skipSpecial = false;
static boolean clear = false;
static boolean dontPreserveFlags = false;
public static void main(String argv[]) {
String srcURL = null;
String dstURL = null;
boolean debug = false;
int optind;
for (optind = 0; optind < argv.length; optind++) {
if (argv[optind].equals("-s")) {
srcURL = argv[++optind];
} else if (argv[optind].equals("-d")) {
dstURL = argv[++optind];
} else if (argv[optind].equals("-D")) {
debug = true;
} else if (argv[optind].equals("-f")) {
force = true;
} else if (argv[optind].equals("-S")) {
skipSpecial = true;
} else if (argv[optind].equals("-c")) {
clear = true;
} else if (argv[optind].equals("-P")) {
dontPreserveFlags = true;
} else if (argv[optind].equals("--")) {
optind++;
break;
} else if (argv[optind].startsWith("-")) {
printUsage();
System.exit(1);
} else {
break;
}
}
try {
if (srcURL == null || dstURL == null) {
printUsage();
System.exit(1);
}
Session session = Session.getInstance(System.getProperties(), null);
session.setDebug(debug);
// Get source folder
URLName srcURLName = new URLName(srcURL);
Folder srcFolder;
// Check if the source URL has a folder specified. If
// not, we use the default folder
if (srcURLName.getFile() == null) {
Store s = session.getStore(srcURLName);
s.connect();
srcFolder = s.getDefaultFolder();
} else {
srcFolder = session.getFolder(new URLName(srcURL));
if (!srcFolder.exists()) {
System.out.println("source folder does not exist");
srcFolder.getStore().close();
System.exit(1);
}
}
// Set up destination folder
URLName dstURLName = new URLName(dstURL);
Folder dstFolder;
// Check if the destination URL has a folder specified. If
// not, we use the source folder name
if (dstURLName.getFile() == null) {
Store s = session.getStore(dstURLName);
s.connect();
dstFolder = s.getFolder(srcFolder.getName());
} else
dstFolder = session.getFolder(dstURLName);
if (clear && dstFolder.exists()) {
if (!dstFolder.delete(true)) {
System.out.println("couldn't delete " + dstFolder.getFullName());
return;
}
}
copy(srcFolder, dstFolder);
// Close the respective stores.
srcFolder.getStore().close();
dstFolder.getStore().close();
} catch (MessagingException mex) {
System.out.println(mex.getMessage());
mex.printStackTrace();
}
}
private static void copy(Folder src, Folder dst) throws MessagingException {
System.out.println("Populating " + dst.getFullName());
Folder ddst = dst;
Folder[] srcFolders = null;
if ((src.getType() & Folder.HOLDS_FOLDERS) != 0)
srcFolders = src.list();
boolean srcHasChildren = srcFolders != null && srcFolders.length > 0;
if (!dst.exists()) {
// Create it.
boolean dstHoldsOnlyFolders = false;
try {
if (!dst.create(src.getType())) {
System.out.println("couldn't create " + dst.getFullName());
return;
}
} catch (MessagingException mex) {
// might not be able to create a folder that holds both
if (src.getType() != (Folder.HOLDS_MESSAGES | Folder.HOLDS_FOLDERS))
throw mex;
if (!dst.create(srcHasChildren ? Folder.HOLDS_FOLDERS : Folder.HOLDS_MESSAGES)) {
System.out.println("couldn't create " + dst.getFullName());
return;
}
dstHoldsOnlyFolders = srcHasChildren;
}
// Copy over any messges from src to dst
if ((src.getType() & Folder.HOLDS_MESSAGES) != 0) {
src.open(Folder.READ_ONLY);
if (dstHoldsOnlyFolders) {
if (src.getMessageCount() > 0) {
System.out.println("Unable to copy messages from " + src.getFullName() + " to "
+ dst.getFullName() + " because destination holds only folders");
}
} else
copyMessages(src, dst);
src.close(false);
}
} else {
System.out.println(dst.getFullName() + " already exists");
// Copy over any messges from src to dst
if (force && (src.getType() & Folder.HOLDS_MESSAGES) != 0) {
src.open(Folder.READ_ONLY);
copyMessages(src, dst);
src.close(false);
}
}
// Copy over subfolders
if (srcHasChildren) {
for (int i = 0; i < srcFolders.length; i++) {
// skip special directories?
if (skipSpecial) {
if (srcFolders[i].getName().equals("SCCS") || srcFolders[i].getName().equals("Drafts")
|| srcFolders[i].getName().equals("Trash")
|| srcFolders[i].getName().equals("Shared Folders"))
continue;
}
copy(srcFolders[i], dst.getFolder(srcFolders[i].getName()));
}
}
}
/**
* Copy message from src to dst. If dontPreserveFlags is set we first copy the
* messages to memory, clear all the flags, and then copy to the destination.
*/
private static void copyMessages(Folder src, Folder dst) throws MessagingException {
Message[] msgs = src.getMessages();
if (dontPreserveFlags) {
for (int i = 0; i < msgs.length; i++) {
MimeMessage m = new MimeMessage((MimeMessage) msgs[i]);
m.setFlags(m.getFlags(), false);
msgs[i] = m;
}
}
src.copyMessages(msgs, dst);
}
private static void printUsage() {
System.out.println("populate [-D] [-f] [-S] [-c] " + "-s source_url -d dest_url");
System.out.println("URLs are of the form: "
+ "protocol://username:password@hostname/foldername");
System.out.println("The destination URL does not need a foldername,"
+ " in which case, the source foldername is used");
}
}
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