/**
* Returns the sorted names of all available databases and, optionally, backups. Filters for
* {@code name} if not {@code null} with glob support.
*
* @param db return databases?
* @param backup return backups?
* @param name name filter (may be {@code null})
* @return database and backups list
*/
private StringList list(final boolean db, final boolean backup, final String name) {
final Pattern pt;
if (name != null) {
final String nm =
REGEX.matcher(name).matches()
? IOFile.regex(name)
: name.replaceAll("([" + REGEXCHARS + "])", "\\\\$1");
pt = Pattern.compile(nm, Prop.CASE ? 0 : Pattern.CASE_INSENSITIVE);
} else {
pt = null;
}
final IOFile[] children = soptions.dbpath().children();
final StringList list = new StringList(children.length);
final HashSet<String> map = new HashSet<>(children.length);
for (final IOFile f : children) {
final String fn = f.name();
String add = null;
if (backup && fn.endsWith(IO.ZIPSUFFIX)) {
final String nn = ZIPPATTERN.split(fn)[0];
if (!nn.equals(fn)) add = nn;
} else if (db && f.isDir() && fn.indexOf('.') == -1) {
add = fn;
}
// add entry if it matches the pattern, and has not already been added
if (add != null && (pt == null || pt.matcher(add).matches()) && map.add(add)) {
list.add(add);
}
}
return list.sort(false);
}
/**
* Returns the name of a specific backup, or all backups found for a specific database, in a
* descending order.
*
* @param db database
* @return names of specified backups
*/
public StringList backups(final String db) {
final StringList backups = new StringList();
final IOFile file = soptions.dbpath(db + IO.ZIPSUFFIX);
if (file.exists()) {
backups.add(db);
} else {
final String regex =
db.replaceAll("([" + REGEXCHARS + "])", "\\\\$1") + DateTime.PATTERN + IO.ZIPSUFFIX;
for (final IOFile f : soptions.dbpath().children()) {
final String n = f.name();
if (n.matches(regex)) backups.add(n.substring(0, n.lastIndexOf('.')));
}
}
return backups.sort(Prop.CASE, false);
}