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/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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;

import org.codehaus.groovy.tools.shell.util.Preferences;
import org.fusesource.jansi.AnsiRenderWriter;

import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Reader;

/**
 * Container for input/output handles.
 *
 * @author Jason Dillon
 */
public class IO implements Closeable
{
    /** Raw input stream. */
    public final InputStream inputStream;

    /** Raw output stream. */
    public final OutputStream outputStream;

    /** Raw error output stream. */
    public final OutputStream errorStream;

    /** Prefered input reader. */
    public final Reader in;

    /** Prefered output writer. */
    public final PrintWriter out;

    /** Prefered error output writer. */
    public final PrintWriter err;

    /**
     * Construct a new IO container.
     */
    public IO(final InputStream inputStream, final OutputStream outputStream, final OutputStream errorStream) {
        assert inputStream != null;
        assert outputStream != null;
        assert errorStream != null;

        this.inputStream = inputStream;
        this.outputStream = outputStream;
        this.errorStream = errorStream;

        this.in = new InputStreamReader(inputStream);
        this.out = new AnsiRenderWriter(outputStream, true);
        this.err = new AnsiRenderWriter(errorStream, true);
    }

    /**
     * Construct a new IO container using system streams.
     */
    public IO() {
        this(System.in, System.out, System.err);
    }

    /**
     * Set the verbosity level.
     *
     * @param verbosity
     */
    public void setVerbosity(final Verbosity verbosity) {
        assert verbosity != null;

        Preferences.verbosity = verbosity;
    }

    /**
     * Returns the verbosity level.
     */
    public Verbosity getVerbosity() {
        return Preferences.verbosity;
    }

    /**
     * Check if the verbosity level is set to {@link Verbosity#QUIET}.
     */
    public boolean isQuiet() {
        return getVerbosity() == Verbosity.QUIET;
    }

    /**
     * Check if the verbosity level is set to {@link Verbosity#INFO}.
     */
    public boolean isInfo() {
        return getVerbosity() == Verbosity.INFO;
    }

    /**
     * Check if the verbosity level is set to {@link Verbosity#VERBOSE}.
     */
    public boolean isVerbose() {
        return getVerbosity() == Verbosity.VERBOSE;
    }

    /**
     * Check if the verbosity level is set to {@link Verbosity#DEBUG}.
     *
     * 

For general usage, when debug output is required, it is better * to use the logging facility instead. */ public boolean isDebug() { return getVerbosity() == Verbosity.DEBUG; } /** * Flush both output streams. */ public void flush() { out.flush(); err.flush(); } /** * Close all streams. */ public void close() throws IOException { in.close(); out.close(); err.close(); } // // Verbosity // public static final class Verbosity { public static final Verbosity QUIET = new Verbosity("QUIET"); public static final Verbosity INFO = new Verbosity("INFO"); public static final Verbosity VERBOSE = new Verbosity("VERBOSE"); public static final Verbosity DEBUG = new Verbosity("DEBUG"); public final String name; private Verbosity(final String name) { this.name = name; } public String toString() { return name; } public static Verbosity forName(final String name) { assert name != null; if (QUIET.name.equalsIgnoreCase(name)) { return QUIET; } if (INFO.name.equalsIgnoreCase(name)) { return INFO; } if (VERBOSE.name.equalsIgnoreCase(name)) { return VERBOSE; } if (DEBUG.name.equalsIgnoreCase(name)) { return DEBUG; } throw new IllegalArgumentException("Invalid verbosity name: " + name); } } }





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