/**
* Removes comments from the specified string and returns the first characters of a query.
*
* @param qu query string
* @param max maximum length of string to return
* @return result
*/
public static String removeComments(final String qu, final int max) {
final StringBuilder sb = new StringBuilder();
int m = 0;
boolean s = false;
final int cl = qu.length();
for (int c = 0; c < cl && sb.length() < max; ++c) {
final char ch = qu.charAt(c);
if (ch == 0x0d) continue;
if (ch == '(' && c + 1 < cl && qu.charAt(c + 1) == ':') {
if (m == 0 && !s) {
sb.append(' ');
s = true;
}
++m;
++c;
} else if (m != 0 && ch == ':' && c + 1 < cl && qu.charAt(c + 1) == ')') {
--m;
++c;
} else if (m == 0) {
if (ch > ' ') sb.append(ch);
else if (!s) sb.append(' ');
s = ch <= ' ';
}
}
if (sb.length() >= max) sb.append("...");
return sb.toString().trim();
}
/**
* Returns a map with variable bindings.
*
* @param opts main options
* @return bindings
*/
public static HashMap<String, String> bindings(final MainOptions opts) {
final HashMap<String, String> bindings = new HashMap<>();
final String bind = opts.get(MainOptions.BINDINGS).trim();
final StringBuilder key = new StringBuilder();
final StringBuilder val = new StringBuilder();
boolean first = true;
final int sl = bind.length();
for (int s = 0; s < sl; s++) {
final char ch = bind.charAt(s);
if (first) {
if (ch == '=') {
first = false;
} else {
key.append(ch);
}
} else {
if (ch == ',') {
if (s + 1 == sl || bind.charAt(s + 1) != ',') {
bindings.put(key.toString().trim(), val.toString());
key.setLength(0);
val.setLength(0);
first = true;
continue;
}
// literal commas are escaped by a second comma
s++;
}
val.append(ch);
}
}
if (key.length() != 0) bindings.put(key.toString().trim(), val.toString());
return bindings;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder(COPY + ' ');
for (final Let t : copies)
sb.append(t.var).append(' ').append(ASSIGN).append(' ').append(t.expr).append(' ');
return sb.append(MODIFY + ' ' + expr[0] + ' ' + RETURN + ' ' + expr[1]).toString();
}
/**
* Returns an extended error message.
*
* @param err error message
* @return result of check
*/
private boolean extError(final String err) {
// will only be evaluated when an error has occurred
final StringBuilder sb = new StringBuilder();
if (options.get(MainOptions.QUERYINFO)) {
sb.append(info()).append(qp.info()).append(NL).append(ERROR).append(COL).append(NL);
}
sb.append(err);
return error(sb.toString());
}
/**
* Returns a string representation of all found arguments.
*
* @param args array with arguments
* @return string representation
*/
static String foundArgs(final Value[] args) {
// compose found arguments
final StringBuilder sb = new StringBuilder();
for (final Value v : args) {
if (sb.length() != 0) sb.append(", ");
sb.append(v instanceof Jav ? Util.className(((Jav) v).toJava()) : v.seqType());
}
return sb.toString();
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
final boolean str = query instanceof AStr;
if (!str) sb.append("{ ");
sb.append(query);
if (!str) sb.append(" }");
switch (mode) {
case ALL:
sb.append(' ' + ALL);
break;
case ALL_WORDS:
sb.append(' ' + ALL + ' ' + WORDS);
break;
case ANY_WORD:
sb.append(' ' + ANY + ' ' + WORD);
break;
case PHRASE:
sb.append(' ' + PHRASE);
break;
default:
}
if (occ != null) sb.append(OCCURS + ' ' + occ[0] + ' ' + TO + ' ' + occ[1] + ' ' + TIMES);
if (ftt != null) sb.append(ftt.opt);
return sb.toString();
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("try { " + expr + " }");
for (final Catch c : catches) sb.append(' ').append(c);
return sb.toString();
}
/**
* Prints the array with the specified separator.
*
* @param sep separator
* @return string representation
*/
final String toString(final Object sep) {
final StringBuilder sb = new StringBuilder();
final int es = exprs.length;
for (int e = 0; e < es; e++) sb.append(e == 0 ? "" : sep.toString()).append(exprs[e]);
return sb.toString();
}