/**
* Returns whether a backup exists in the same folder as the specified resource entry or a biffed
* file has been overriden.
*/
static boolean isBackupAvailable(ResourceEntry entry) {
if (entry != null) {
return (getBackupFile(entry) != null
|| (entry instanceof BIFFResourceEntry && entry.hasOverride()));
}
return false;
}
// Returns the actual physical file of the given resource entry or null.
private static Path getCurrentFile(ResourceEntry entry) {
if (entry instanceof FileResourceEntry
|| (entry instanceof BIFFResourceEntry && entry.hasOverride())) {
return entry.getActualPath();
} else {
return null;
}
}
@Override
public void show(Component invoker, int x, int y) {
super.show(invoker, x, y);
mi_rename.setEnabled(tree.getLastSelectedPathComponent() instanceof FileResourceEntry);
if (tree.getLastSelectedPathComponent() instanceof ResourceEntry) {
ResourceEntry entry = (ResourceEntry) tree.getLastSelectedPathComponent();
mi_delete.setEnabled(
entry != null && entry.hasOverride() || entry instanceof FileResourceEntry);
mi_restore.setEnabled(isBackupAvailable(entry));
} else {
mi_delete.setEnabled(false);
mi_restore.setEnabled(false);
}
}
// Returns the backup file of the specified resource entry if available or null.
// A backup file is either a *.bak file or a biffed file which has been overridden.
private static Path getBackupFile(ResourceEntry entry) {
Path file = getCurrentFile(entry);
if (entry instanceof FileResourceEntry
|| (entry instanceof BIFFResourceEntry && entry.hasOverride())) {
if (file != null) {
Path bakFile = file.getParent().resolve(file.getFileName().toString() + ".bak");
if (Files.isRegularFile(bakFile)) {
return bakFile;
}
}
} else if (entry instanceof BIFFResourceEntry) {
return file;
}
return null;
}
/**
* Attempts to restore the specified resource entry if it's backed up by an associated "*.bak"
* file.
*/
static void restoreResource(ResourceEntry entry) {
if (entry != null) {
final String[] options = {"Restore", "Cancel"};
final String msgBackup =
"Are you sure you want to restore " + entry + " with a previous version?";
final String msgBiffed =
"Are you sure you want to restore the biffed version of " + entry + "?";
Path bakFile = getBackupFile(entry);
boolean isBackedUp =
(bakFile != null)
&& (bakFile.getFileName().toString().toLowerCase(Locale.ENGLISH).endsWith(".bak"));
if (JOptionPane.showOptionDialog(
NearInfinity.getInstance(),
isBackedUp ? msgBackup : msgBiffed,
"Restore backup",
JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE,
null,
options,
options[0])
== JOptionPane.YES_OPTION) {
NearInfinity.getInstance().removeViewable();
if (bakFile != null
&& (bakFile.getFileName().toString().toLowerCase(Locale.ENGLISH).endsWith(".bak"))) {
// .bak available -> restore .bak version
Path curFile = getCurrentFile(entry);
Path tmpFile = getTempFile(curFile);
if (curFile != null
&& Files.isRegularFile(curFile)
&& bakFile != null
&& Files.isRegularFile(bakFile)) {
try {
Files.move(curFile, tmpFile);
try {
Files.move(bakFile, curFile);
try {
Files.delete(tmpFile);
} catch (IOException e) {
e.printStackTrace();
}
JOptionPane.showMessageDialog(
NearInfinity.getInstance(),
"Backup has been restored successfully.",
"Restore backup",
JOptionPane.INFORMATION_MESSAGE);
return;
} catch (IOException e) {
// Worst possible scenario: failed restore operation can't restore original resource
String path = tmpFile.getParent().toString();
String tmpName = tmpFile.getFileName().toString();
String curName = curFile.getFileName().toString();
JOptionPane.showMessageDialog(
NearInfinity.getInstance(),
"Error while restoring resource.\n"
+ "Near Infinity is unable to recover from the restore operation.\n"
+ String.format(
"Please manually rename the file \"%1$s\" into \"%2$s\", located in \n + \"%3$s\"",
tmpName, curName, path),
"Critical Error",
JOptionPane.ERROR_MESSAGE);
e.printStackTrace();
return;
}
} catch (IOException e) {
e.printStackTrace();
}
}
JOptionPane.showMessageDialog(
NearInfinity.getInstance(),
"Error while restoring resource.\nRestore operation has been cancelled.",
"Error",
JOptionPane.ERROR_MESSAGE);
} else if (entry instanceof BIFFResourceEntry && entry.hasOverride()) {
// Biffed and no .bak available -> delete overridden copy
try {
((BIFFResourceEntry) entry).deleteOverride();
JOptionPane.showMessageDialog(
NearInfinity.getInstance(),
"Backup has been restored successfully.",
"Restore backup",
JOptionPane.INFORMATION_MESSAGE);
} catch (IOException e) {
JOptionPane.showMessageDialog(
NearInfinity.getInstance(),
"Error removing file \"" + entry + "\" from override folder!",
"Error",
JOptionPane.ERROR_MESSAGE);
e.printStackTrace();
}
}
}
}
}