/**
* Build a list of commands matching the given string.
*
* @param caller the {@link MessageReceiver}
* @param command the command name
* @return nullchar separated stringbuilder
*/
public StringBuilder matchCommand(
MessageReceiver caller, String command, boolean onlySubcommands) {
int matches = 0;
int maxMatches = 4;
StringBuilder matching = new StringBuilder();
command = command.toLowerCase();
// Match base commands
for (String key : commands.keySet()) {
if (!onlySubcommands) {
if (key.toLowerCase().equals(command)) {
// Perfect match
if (matching.indexOf("/".concat(key)) == -1) {
if (commands.get(key).canUse(caller) && matches <= maxMatches) {
++matches;
matching.append("/").append(key).append("\u0000");
}
}
} else if (key.toLowerCase().startsWith(command)) {
// Partial match
if (matching.indexOf("/".concat(key)) == -1) {
if (commands.get(key).canUse(caller) && matches <= maxMatches) {
++matches;
matching.append("/").append(key).append("\u0000");
}
}
}
}
// Match sub commands
for (CanaryCommand cmd : commands.get(key).getSubCommands(new ArrayList<CanaryCommand>())) {
for (String alias : cmd.meta.aliases()) {
if (alias.toLowerCase().equals(command)) {
// full match
if (matching.indexOf(alias) == -1) {
if (cmd.canUse(caller) && matches <= maxMatches) {
++matches;
matching.append(alias).append("\u0000");
}
}
} else if (alias.toLowerCase().startsWith(command)) {
// partial match
if (matching.indexOf(alias) == -1) {
if (cmd.canUse(caller) && matches <= maxMatches) {
++matches;
matching.append(alias).append("\u0000");
}
}
}
}
}
}
return matching;
}
public boolean canUseCommand(MessageReceiver user, String command) {
CanaryCommand cmd = commands.get(command);
return cmd != null && cmd.canUse(user);
}
