com.github.jy2.commandline.picocli.param.completion.ParameterNameCompletionCandidates Maven / Gradle / Ivy

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package com.github.jy2.commandline.picocli.param.completion;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;

import com.github.jy2.commandline.picocli.Main;

import picocli.AutoComplete;
import picocli.CommandLine.Model.CommandSpec;
import picocli.CommandLine.Model.OptionSpec;
import picocli.CommandLine.Model.PositionalParamSpec;

public class ParameterNameCompletionCandidates implements Iterable {

	@Override
	public Iterator iterator() {
		if (AutoComplete.argIndex != getParameterNameIndex()) {
			return new ArrayList().iterator();
		}
		
		ArrayList list;
		try {
			list = Main.di.getParameterClient().getParameterNames();
		} catch (IOException e) {
			e.printStackTrace();
			return new ArrayList().iterator();
		}
		list.sort(String::compareToIgnoreCase);
		return list.iterator();
	}

	private int getParameterNameIndex() {
		if (AutoComplete.tentativeMatch == null) {
			return -1;
		}
		int i = 0;
		for (Object obj : AutoComplete.tentativeMatch) {
			if (obj instanceof CommandSpec) { // subcommand
			} else if (obj instanceof OptionSpec) { // option
			} else if (obj instanceof PositionalParamSpec) { // positional
				PositionalParamSpec pos = (PositionalParamSpec) obj;
				if (pos.index().min == 0) {
					return i;
				}
			}
			i++;
		}
		return -1;
	}
}