io.micronaut.cli.profile.commands.CommandCompleter.groovy Maven / Gradle / Ivy

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/*
 * Copyright 2017-2019 original authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.micronaut.cli.profile.commands

import io.micronaut.cli.profile.Command
import jline.console.completer.Completer

/**
 * A completer for commands
 *
 * @author Graeme Rocher
 * @since 1.0
 */
class CommandCompleter implements Completer {

    Collection commands

    CommandCompleter(Collection commands) {
        this.commands = commands
    }

    @Override
    int complete(String buffer, int cursor, List candidates) {
        def cmd = commands.find() {
            def trimmed = buffer.trim()
            if (trimmed.split(/\s/).size() > 1) {
                return trimmed.startsWith(it.name)
            } else {
                return trimmed == it.name
            }
        }
        if (cmd instanceof Completer) {
            return ((Completer) cmd).complete(buffer, cursor, candidates)
        }
        return cursor
    }
}