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Refactoring command registers, step III
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110 changes: 110 additions & 0 deletions
110
builtins/src/main/java/org/jline/builtins/JlineCommandRegistry.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| /* | ||
| * Copyright (c) 2002-2020, the original author or authors. | ||
| * | ||
| * This software is distributable under the BSD license. See the terms of the | ||
| * BSD license in the documentation provided with this software. | ||
| * | ||
| * https://opensource.org/licenses/BSD-3-Clause | ||
| */ | ||
| package org.jline.builtins; | ||
|
|
||
| import java.util.*; | ||
| import java.util.stream.Collectors; | ||
|
|
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| import org.jline.console.ArgDesc; | ||
| import org.jline.console.CmdDesc; | ||
| import org.jline.console.CommandRegistry; | ||
| import org.jline.utils.AttributedString; | ||
|
|
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| import org.jline.builtins.Options; | ||
| import org.jline.builtins.Completers.OptDesc; | ||
| import org.jline.builtins.Completers.OptionCompleter; | ||
| import org.jline.builtins.Options.HelpException; | ||
| import org.jline.console.AbstractCommandRegistry; | ||
| import org.jline.console.CommandRegistry.CommandSession; | ||
| import org.jline.reader.Completer; | ||
| import org.jline.reader.impl.completer.ArgumentCompleter; | ||
| import org.jline.reader.impl.completer.NullCompleter; | ||
| import org.jline.reader.impl.completer.SystemCompleter; | ||
|
|
||
| /** | ||
| * CommandRegistry common methods for JLine commands that are using HelpException. | ||
| * | ||
| * @author <a href="mailto:matti.rintanikkola@gmail.com">Matti Rinta-Nikkola</a> | ||
| */ | ||
| public abstract class JlineCommandRegistry extends AbstractCommandRegistry { | ||
|
|
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| public JlineCommandRegistry() { | ||
| super(); | ||
| } | ||
|
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| public List<String> commandInfo(String command) { | ||
| try { | ||
| Object[] args = {"--help"}; | ||
| if (command.equals("help")) { | ||
| args = new Object[] {}; | ||
| } | ||
| invoke(new CommandSession(), command, args); | ||
| } catch (HelpException e) { | ||
| return Builtins.compileCommandInfo(e.getMessage()); | ||
| } catch (Exception e) { | ||
|
|
||
| } | ||
| throw new IllegalArgumentException("JlineCommandRegistry.commandInfo() method must be overridden in class " | ||
| + this.getClass().getCanonicalName()); | ||
| } | ||
|
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| public CmdDesc commandDescription(String command) { | ||
| try { | ||
| if (command != null && !command.isEmpty()) { | ||
| invoke(new CommandSession(), command, new Object[] {"--help"}); | ||
| } else { | ||
| List<AttributedString> main = new ArrayList<>(); | ||
| Map<String, List<AttributedString>> options = new HashMap<>(); | ||
| for (String c : new TreeSet<String>(commandNames())) { | ||
| for (String info : commandInfo(c)) { | ||
| main.add(HelpException.highlightSyntax(c + " - " + info, HelpException.defaultStyle(), true)); | ||
| break; | ||
| } | ||
| } | ||
| return new CmdDesc(main, ArgDesc.doArgNames(Arrays.asList("")), options); | ||
| } | ||
| } catch (HelpException e) { | ||
| return Builtins.compileCommandDescription(e.getMessage()); | ||
| } catch (Exception e) { | ||
|
|
||
| } | ||
| throw new IllegalArgumentException("JlineCommandRegistry.commandDescription() method must be overridden in class " | ||
| + this.getClass().getCanonicalName()); | ||
| } | ||
|
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| public List<OptDesc> commandOptions(String command) { | ||
| try { | ||
| invoke(new CommandSession(), command, "--help"); | ||
| } catch (HelpException e) { | ||
| return Builtins.compileCommandOptions(e.getMessage()); | ||
| } catch (Exception e) { | ||
|
|
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| } | ||
| return null; | ||
| } | ||
|
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| public List<Completer> defaultCompleter(String command) { | ||
| List<Completer> completers = new ArrayList<>(); | ||
| completers.add(new ArgumentCompleter(NullCompleter.INSTANCE | ||
| , new OptionCompleter(NullCompleter.INSTANCE | ||
| , this::commandOptions | ||
| , 1) | ||
| )); | ||
| return completers; | ||
| } | ||
|
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| public Options parseOptions(String[] usage, Object[] args) throws HelpException { | ||
| Options opt = Options.compile(usage).parse(args); | ||
| if (opt.isSet("help")) { | ||
| throw new HelpException(opt.usage()); | ||
| } | ||
| return opt; | ||
| } | ||
|
|
||
| } |
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