/**
* Performs the test-libraries function (still experimental).
*
* @param ctx query context
* @return resulting value
* @throws QueryException query exception
*/
private Item testLibraries(final QueryContext ctx) throws QueryException {
checkCreate(ctx);
final TokenList tl = new TokenList();
final Iter ir = ctx.iter(expr[0]);
for (Item it; (it = ir.next()) != null; ) tl.add(checkStr(it));
return new Suite(ctx, info).test(tl);
}
/**
* Returns a formatted number.
*
* @param info input info
* @param number number to be formatted
* @param picture picture
* @return string representation
* @throws QueryException query exception
*/
public byte[] format(final InputInfo info, final ANum number, final byte[] picture)
throws QueryException {
// find pattern separator and sub-patterns
final TokenList tl = new TokenList();
byte[] pic = picture;
// "A picture-string consists either of a sub-picture, or of two sub-pictures separated by
// a pattern-separator-sign"
final int i = indexOf(pic, pattern);
if (i == -1) {
tl.add(pic);
} else {
tl.add(substring(pic, 0, i));
pic = substring(pic, i + cl(pic, i));
// "A picture-string must not contain more than one pattern-separator-sign"
if (contains(pic, pattern)) throw PICNUM_X.get(info, picture);
tl.add(pic);
}
final byte[][] patterns = tl.finish();
// check and analyze patterns
if (!checkSyntax(patterns)) throw PICNUM_X.get(info, picture);
final Picture[] pics = analyze(patterns);
// return formatted string
return format(number, pics, info);
}
/**
* Extracts entries from the archive.
*
* @param ctx query context
* @return text entries
* @throws QueryException query exception
*/
private TokenList extract(final QueryContext ctx) throws QueryException {
final B64 archive = (B64) checkType(checkItem(expr[0], ctx), AtomType.B64);
TokenSet hs = null;
if (expr.length > 1) {
// filter result to specified entries
hs = new TokenSet();
final Iter names = ctx.iter(expr[1]);
for (Item en; (en = names.next()) != null; ) {
hs.add(checkElmStr(en).string(info));
}
}
final TokenList tl = new TokenList();
final ArchiveIn in = ArchiveIn.get(archive.input(info), info);
try {
while (in.more()) {
final ZipEntry ze = in.entry();
if (ze.isDirectory()) continue;
if (hs == null || hs.delete(token(ze.getName())) != 0) tl.add(in.read());
}
} catch (final IOException ex) {
Util.debug(ex);
ARCH_FAIL.thrw(info, ex);
} finally {
in.close();
}
return tl;
}
/**
* Returns all tokens of the query.
*
* @param qc query context
* @return token list
* @throws QueryException query exception
*/
private TokenList tokens(final QueryContext qc) throws QueryException {
final TokenList tl = new TokenList();
final Iter ir = qc.iter(query);
for (byte[] qu; (qu = nextToken(ir)) != null; ) {
// skip empty tokens if not all results are needed
if (qu.length != 0 || mode == FTMode.ALL || mode == FTMode.ALL_WORDS) tl.add(qu);
}
return tl;
}
/**
* Evaluates the tokenize function.
*
* @param ctx query context
* @return function result
* @throws QueryException query exception
*/
private Value tokenize(final QueryContext ctx) throws QueryException {
final byte[] val = checkEStr(expr[0], ctx);
final Pattern p = pattern(expr[1], expr.length == 3 ? expr[2] : null, ctx);
if (p.matcher("").matches()) REGROUP.thrw(info);
final TokenList tl = new TokenList();
final String str = string(val);
if (!str.isEmpty()) {
final Matcher m = p.matcher(str);
int s = 0;
while (m.find()) {
tl.add(str.substring(s, m.start()));
s = m.end();
}
tl.add(str.substring(s, str.length()));
}
return StrSeq.get(tl);
}