private PartialFileHistory guessLastFileHistoryForFileWithMatchingChecksum(
FileProperties fileProperties,
Collection<PartialFileHistory> fileHistoriesWithSameChecksum) {
PartialFileHistory lastFileHistory = null;
// Check if they do not exist anymore --> assume it has moved!
// We choose the best fileHistory to base on as follows:
// 1. Ensure that it was modified at the same time and is the same size
// 2. Check the fileHistory was deleted and the file does not actually exists
// 3. Choose the one with the longest matching tail of the path to the new path
for (PartialFileHistory fileHistoryWithSameChecksum : fileHistoriesWithSameChecksum) {
FileVersion lastVersion = fileHistoryWithSameChecksum.getLastVersion();
if (fileProperties.getLastModified() != lastVersion.getLastModified().getTime()
|| fileProperties.getSize() != lastVersion.getSize()) {
continue;
}
File lastVersionOnLocalDisk =
new File(config.getLocalDir() + File.separator + lastVersion.getPath());
if (lastVersion.getStatus() != FileStatus.DELETED
&& !FileUtil.exists(lastVersionOnLocalDisk)) {
if (lastFileHistory == null) {
lastFileHistory = fileHistoryWithSameChecksum;
} else {
String filePath = fileProperties.getRelativePath();
String currentPreviousPath = lastFileHistory.getLastVersion().getPath();
String candidatePreviousPath = fileHistoryWithSameChecksum.getLastVersion().getPath();
for (int i = 0; i < filePath.length(); i++) {
if (!filePath.regionMatches(
filePath.length() - i,
candidatePreviousPath,
candidatePreviousPath.length() - i,
i)) {
// The candidate no longer matches, take the current path.
break;
}
if (!filePath.regionMatches(
filePath.length() - i,
currentPreviousPath,
currentPreviousPath.length() - i,
i)) {
// The current previous path no longer matches, take the new candidate
lastFileHistory = fileHistoryWithSameChecksum;
break;
}
}
}
}
}
return lastFileHistory;
}
private PartialFileHistory getFileHistoryByPathFromDatabaseVersion(
DatabaseVersion databaseVersion, String path) {
// TODO [medium] Extremely performance intensive, because this is called inside a loop above.
// Implement better caching for database version!!!
for (PartialFileHistory fileHistory : databaseVersion.getFileHistories()) {
FileVersion lastVersion = fileHistory.getLastVersion();
if (lastVersion.getStatus() != FileStatus.DELETED && lastVersion.getPath().equals(path)) {
return fileHistory;
}
}
return null;
}
private void removeDeletedFiles(
DatabaseVersion newDatabaseVersion, List<PartialFileHistory> fileHistoriesWithLastVersion) {
logger.log(Level.FINER, "- Looking for deleted files ...");
for (PartialFileHistory fileHistory : fileHistoriesWithLastVersion) {
// Ignore this file history if it has been updated in this database version before (file
// probably renamed!)
if (newDatabaseVersion.getFileHistory(fileHistory.getFileHistoryId()) != null) {
continue;
}
// Check if file exists, remove if it doesn't
FileVersion lastLocalVersion = fileHistory.getLastVersion();
File lastLocalVersionOnDisk =
new File(config.getLocalDir() + File.separator + lastLocalVersion.getPath());
// Ignore this file history if the last version is marked "DELETED"
if (lastLocalVersion.getStatus() == FileStatus.DELETED) {
continue;
}
// Add this file history if a new file with this name has been added (file type change)
PartialFileHistory newFileWithSameName =
getFileHistoryByPathFromDatabaseVersion(
newDatabaseVersion, fileHistory.getLastVersion().getPath());
// If file has VANISHED, mark as DELETED
if (!FileUtil.exists(lastLocalVersionOnDisk) || newFileWithSameName != null) {
PartialFileHistory deletedFileHistory =
new PartialFileHistory(fileHistory.getFileHistoryId());
FileVersion deletedVersion = lastLocalVersion.clone();
deletedVersion.setStatus(FileStatus.DELETED);
deletedVersion.setVersion(fileHistory.getLastVersion().getVersion() + 1);
deletedVersion.setUpdated(new Date());
logger.log(Level.FINER, " + Deleted: Adding DELETED version: {0}", deletedVersion);
logger.log(Level.FINER, " based on: {0}", lastLocalVersion);
deletedFileHistory.addFileVersion(deletedVersion);
newDatabaseVersion.addFileHistory(deletedFileHistory);
}
}
}
private PartialFileHistory guessLastFileHistoryForFolderOrSymlink(
FileProperties fileProperties) {
PartialFileHistory lastFileHistory = filePathCache.get(fileProperties.getRelativePath());
if (lastFileHistory == null) {
logger.log(
Level.FINER,
" * No old file history found, starting new history (path: "
+ fileProperties.getRelativePath()
+ ", "
+ fileProperties.getType()
+ ")");
return null;
} else {
FileVersion lastFileVersion = lastFileHistory.getLastVersion();
if (lastFileVersion.getStatus() != FileStatus.DELETED
&& lastFileVersion.getType() == fileProperties.getType()) {
logger.log(
Level.FINER,
" * Found old file history "
+ lastFileHistory.getFileHistoryId()
+ " (by path: "
+ fileProperties.getRelativePath()
+ "), "
+ fileProperties.getType()
+ ", appending new version.");
return lastFileHistory;
} else {
logger.log(
Level.FINER,
" * No old file history found, starting new history (path: "
+ fileProperties.getRelativePath()
+ ", "
+ fileProperties.getType()
+ ")");
return null;
}
}
}
private void updateTable(LsFolderRequest lsRequest, LsFolderResponse lsResponse) {
logger.log(
Level.INFO,
"Detail panel: Updating table with "
+ lsResponse.getResult().getFileVersions().size()
+ " file versions ...");
// Add new file version items
List<PartialFileHistory> fileVersions =
new ArrayList<>(lsResponse.getResult().getFileVersions().values());
selectedFileHistory = fileVersions.get(0);
for (FileVersion fileVersion : selectedFileHistory.getFileVersions().values()) {
String checksumStr =
(fileVersion.getChecksum() != null) ? fileVersion.getChecksum().toString() : "";
TableItem tableItem = new TableItem(historyTable, SWT.NONE);
tableItem.setData(fileVersion);
tableItem.setImage(COLUMN_INDEX_STATUS, getStatusImage(fileVersion.getStatus()));
tableItem.setText(COLUMN_INDEX_PATH, fileVersion.getPath());
tableItem.setText(COLUMN_INDEX_VERSION, Long.toString(fileVersion.getVersion()));
tableItem.setText(COLUMN_INDEX_TYPE, fileVersion.getType().toString());
tableItem.setText(COLUMN_INDEX_SIZE, FileUtil.formatFileSize(fileVersion.getSize()));
tableItem.setText(COLUMN_INDEX_POSIX_PERMS, fileVersion.getPosixPermissions());
tableItem.setText(COLUMN_INDEX_DOS_ATTRS, fileVersion.getDosAttributes());
tableItem.setText(COLUMN_INDEX_CHECKSUM, checksumStr);
tableItem.setText(COLUMN_INDEX_LAST_MODIFIED, "" + fileVersion.getLastModified());
tableItem.setText(COLUMN_INDEX_UPDATED, "" + fileVersion.getUpdated());
}
if (historyTable.getItemCount() > 0) {
restoreButton.setEnabled(false);
historyTable.select(historyTable.getItemCount() - 1);
}
resizeColumns();
}