/**
* Performs a wildcard search for the specified token.
*
* @param token token to look for
* @return iterator
*/
private synchronized IndexIterator wc(final byte[] token) {
final FTIndexIterator it = FTIndexIterator.FTEMPTY;
final FTWildcard wc = new FTWildcard(token);
if (!wc.parse()) return it;
final IntList pr = new IntList();
final IntList ps = new IntList();
final byte[] pref = wc.prefix();
final int pl = pref.length, tl = tp.length;
final int l = Math.min(tl - 1, wc.max());
for (int ti = pl; ti <= l; ti++) {
int i = tp[ti];
if (i == -1) continue;
int c = ti + 1;
int e = -1;
while (c < tl && e == -1) e = tp[c++];
i = find(pref, i, e, ti);
while (i < e) {
final byte[] t = inY.readBytes(i, ti);
if (!startsWith(t, pref)) break;
if (wc.match(t)) {
inZ.cursor(pointer(i, ti));
final int s = size(i, ti);
for (int d = 0; d < s; d++) {
pr.add(inZ.readNum());
ps.add(inZ.readNum());
}
}
i += ti + ENTRY;
}
}
return iter(new FTCache(pr, ps), token);
}
/**
* Returns an iterator for an index entry.
*
* @param off offset on entries
* @param size number of id/pos entries
* @param da data source
* @param token index token
* @return iterator
*/
private static FTIndexIterator iter(
final long off, final int size, final DataAccess da, final byte[] token) {
da.cursor(off);
final IntList pr = new IntList(size);
final IntList ps = new IntList(size);
for (int c = 0; c < size; c++) {
pr.add(da.readNum());
ps.add(da.readNum());
}
return iter(new FTCache(pr, ps), token);
}
@Override
public IndexIterator iter(final IndexToken token) {
final int id = values.id(token.get());
if (id == 0) return IndexIterator.EMPTY;
final int len = lenList.get(id);
final int[] ids = idsList.get(id), pres;
if (data.meta.updindex) {
final IntList tmp = new IntList();
for (int i = 0; i < len; ++i) tmp.add(data.pre(ids[i]));
pres = tmp.sort().finish();
} else {
pres = ids;
}
return new IndexIterator() {
int p;
@Override
public boolean more() {
return p < len;
}
@Override
public int pre() {
return pres[p++];
}
@Override
public int size() {
return len;
}
};
}
@Override
protected final void parseArgs() throws IOException {
ops = new IntList();
vals = new StringList();
final MainParser arg = new MainParser(this);
while (arg.more()) {
final char c;
String v = null;
if (arg.dash()) {
c = arg.next();
if (c == 'd') {
// activate debug mode
Prop.debug = true;
} else if (c == 'b'
|| c == 'c'
|| c == 'C'
|| c == 'i'
|| c == 'I'
|| c == 'o'
|| c == 'q'
|| c == 'r'
|| c == 's'
|| c == 't' && local()) {
// options followed by a string
v = arg.string();
} else if (c == 'D' && local()
|| c == 'u' && local()
|| c == 'R'
|| c == 'v'
|| c == 'V'
|| c == 'w'
|| c == 'x'
|| c == 'X'
|| c == 'z') {
// options to be toggled
v = "";
} else if (!local()) {
// client options: need to be set before other options
if (c == 'n') {
// set server name
context.soptions.set(StaticOptions.HOST, arg.string());
} else if (c == 'p') {
// set server port
context.soptions.set(StaticOptions.PORT, arg.number());
} else if (c == 'P') {
// specify password
context.soptions.set(StaticOptions.PASSWORD, arg.string());
} else if (c == 'U') {
// specify user name
context.soptions.set(StaticOptions.USER, arg.string());
} else {
throw arg.usage();
}
} else {
throw arg.usage();
}
} else {
v = arg.string().trim();
// interpret as command file if input string ends with command script suffix
c = v.endsWith(IO.BXSSUFFIX) ? 'c' : 'Q';
}
if (v != null) {
ops.add(c);
vals.add(v);
}
}
}