| /* |
| * Copyright 2003-2007 the original author or 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 org.codehaus.groovy.tools.shell.util; |
| |
| import java.util.List; |
| import java.util.Iterator; |
| import java.util.SortedSet; |
| |
| import groovy.lang.Closure; |
| |
| /** |
| * Support for simple completors. |
| * |
| * @version $Id$ |
| * @author <a href="mailto:jason@planet57.com">Jason Dillon</a> |
| */ |
| public class SimpleCompletor |
| extends jline.SimpleCompletor |
| { |
| public SimpleCompletor(final String[] candidates) { |
| super(candidates); |
| } |
| |
| public SimpleCompletor() { |
| this(new String[0]); |
| } |
| |
| public SimpleCompletor(final Closure loader) { |
| this(); |
| |
| assert loader != null; |
| |
| Object obj = loader.call(); |
| |
| List list = null; |
| |
| if (obj instanceof List) { |
| list = (List)obj; |
| } |
| |
| // |
| // TODO: Maybe handle arrays too? |
| // |
| |
| if (list == null) { |
| throw new IllegalStateException("The loader closure did not return a list of candicates; found: " + obj); |
| } |
| |
| Iterator iter = list.iterator(); |
| |
| while (iter.hasNext()) { |
| add(String.valueOf(iter.next())); |
| } |
| } |
| |
| public void add(final String candidate) { |
| addCandidateString(candidate); |
| } |
| |
| public Object leftShift(final String s) { |
| add(s); |
| |
| return null; |
| } |
| |
| // |
| // NOTE: Duplicated (and augumented) from JLine sources to make it call getCandidates() to make the list more dynamic |
| // |
| |
| public int complete(final String buffer, final int cursor, final List clist) { |
| String start = (buffer == null) ? "" : buffer; |
| |
| SortedSet matches = getCandidates().tailSet(start); |
| |
| for (Iterator i = matches.iterator(); i.hasNext();) { |
| String can = (String) i.next(); |
| |
| if (!(can.startsWith(start))) { |
| break; |
| } |
| |
| String delim = getDelimiter(); |
| |
| if (delim != null) { |
| int index = can.indexOf(delim, cursor); |
| |
| if (index != -1) { |
| can = can.substring(0, index + 1); |
| } |
| } |
| |
| clist.add(can); |
| } |
| |
| if (clist.size() == 1) { |
| clist.set(0, ((String) clist.get(0)) + " "); |
| } |
| |
| // the index of the completion is always from the beginning of the buffer. |
| return (clist.size() == 0) ? (-1) : 0; |
| } |
| } |