/**
* Convert all special tags in a string to local URL (e.g [sprite: NameOfPony] =>
* file://path/to/local/sprite.png); allowed special tags are: sprite, type, movetype
*
* @return The converted string
*/
public static String toLocalURL(final String msg) {
StringBuilder converted = new StringBuilder();
boolean parsingTag = false;
boolean inTagName = true;
StringBuilder tagName = new StringBuilder(10);
StringBuilder tagArg = new StringBuilder(30);
for (int i = 0; i < msg.length(); ++i) {
char c = msg.charAt(i);
switch (c) {
case '[':
if (!parsingTag) {
parsingTag = true;
} else {
if (inTagName) tagName.append(c);
else tagArg.append(c);
}
break;
case ']':
if (parsingTag) {
parsingTag = false;
converted.append(
convertLocalURLTag(tagName.toString().trim(), tagArg.toString().trim()));
tagName.setLength(0);
tagArg.setLength(0);
inTagName = true;
} else {
converted.append(c);
}
break;
case ':':
if (parsingTag) {
if (inTagName) inTagName = false;
else tagArg.append(c);
} else {
converted.append(c);
}
break;
default:
if (parsingTag) {
if (inTagName) tagName.append(c);
else tagArg.append(c);
} else {
converted.append(c);
}
}
}
return converted.toString();
}
/**
* Joins array elements to string.
*
* @param arr Array.
* @return String.
*/
@Nullable
public static String compactArray(Object[] arr) {
if (arr == null || arr.length == 0) return null;
String sep = ", ";
StringBuilder sb = new StringBuilder();
for (Object s : arr) sb.append(s).append(sep);
if (sb.length() > 0) sb.setLength(sb.length() - sep.length());
return U.compact(sb.toString());
}