net.oneandone.stool.cli.Select Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of main Show documentation
Stool's main component. Java Library, cli, setup code.
There is a newer version: 4.0.3
/*
 * Copyright 1&1 Internet AG, https://github.com/1and1/
 *
 * 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 net.oneandone.stool.cli;

import net.oneandone.stool.locking.Mode;
import net.oneandone.stool.util.Session;
import net.oneandone.sushi.fs.file.FileNode;

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

public class Select extends SessionCommand {
    private final boolean fuzzy;
    private final String stageName;

    public Select(Session session, boolean fuzzy, String stageName) {
        super(session, Mode.NONE);
        this.fuzzy = fuzzy;
        this.stageName = stageName;
    }

    @Override
    public void doRun() throws Exception {
        FileNode dir;

        if (stageName == null) {
            console.info.println("currently selected: "
                    + (session.getSelectedStageId() == null ? "none" : session.getSelectedStageId()));
            return;
        }
        if ("none".equals(stageName)) {
            if (session.getSelectedStageId() == null) {
                console.info.println("already selected: none");
            } else {
                console.verbose.println("selecting none");
                session.cd(world.getWorking().getParent());
            }
            return;
        }
        dir = session.lookup(stageName);
        if (dir == null) {
            List candidates;

            candidates = candidates(session.stageNames(), stageName);
            switch (candidates.size()) {
                case 0:
                    throw new IOException("No such stage: " + stageName);
                case 1:
                    if (fuzzy) {
                        dir = session.lookup(candidates.get(0));
                        console.info.println("assuming you mean " + candidates.get(0));
                        break;
                    } else {
                        throw new IOException("No such stage: " + stageName + "\nDid you mean " + candidates.get(0) + "?");
                    }
                default:
                    throw new IOException("No such stage: " + stageName + "\nDid you mean one of " + candidates + "?");
            }
        }
        session.cd(dir);
    }

    public static List candidates(List names, String search) {
        String reduced;
        List result;

        result = new ArrayList<>();
        reduced = reduce(search);
        for (String name : names) {
            if (reduce(name).contains(reduced)) {
                result.add(name);
            }
        }
        return result;
    }

    private static String reduce(String name) {
        StringBuilder builder;
        char c;

        builder = new StringBuilder();
        for (int i = 0, max = name.length(); i < max; i++) {
            c = name.charAt(i);
            if (c >= '0' && c <= '9') {
                builder.append(c);
            } else if (c >= 'a' && c <= 'z') {
                builder.append(c);
            } else if (c >= 'A' && c <= 'Z') {
                builder.append(Character.toLowerCase(c));
            }
        }
        return builder.toString();
    }
}