<?php

/**
 * Hoa
 *
 *
 * @license
 *
 * New BSD License
 *
 * Copyright © 2007-2017, Hoa community. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Hoa nor the names of its contributors may be
 *       used to endorse or promote products derived from this software without
 *       specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

namespace Psy\Readline\Hoa;

/**
 * Interface \Hoa\Console\Input.
 *
 * This interface represents the input of a program. Most of the time, this is
 * going to be `php://stdin` but it can be `/dev/tty` if the former has been
 * closed.
 */
class ConsoleInput implements StreamIn
{
    /**
     * Real input stream.
     */
    protected $_input = null;

    /**
     * Wraps an `Hoa\Stream\IStream\In` stream.
     */
    public function __construct(?StreamIn $input = null)
    {
        if (null === $input) {
            if (\defined('STDIN') &&
                false !== @\stream_get_meta_data(\STDIN)) {
                $input = new FileRead('php://stdin');
            } else {
                $input = new FileRead('/dev/tty');
            }
        }

        $this->_input = $input;

        return;
    }

    /**
     * Get underlying stream.
     */
    public function getStream(): StreamIn
    {
        return $this->_input;
    }

    /**
     * Test for end-of-file.
     */
    public function eof(): bool
    {
        return $this->_input->eof();
    }

    /**
     * Read n characters.
     */
    public function read(int $length)
    {
        return $this->_input->read($length);
    }

    /**
     * Alias of $this->read().
     */
    public function readString(int $length)
    {
        return $this->_input->readString($length);
    }

    /**
     * Read a character.
     */
    public function readCharacter()
    {
        return $this->_input->readCharacter();
    }

    /**
     * Read a boolean.
     */
    public function readBoolean()
    {
        return $this->_input->readBoolean();
    }

    /**
     * Read an integer.
     */
    public function readInteger(int $length = 1)
    {
        return $this->_input->readInteger($length);
    }

    /**
     * Read a float.
     */
    public function readFloat(int $length = 1)
    {
        return $this->_input->readFloat($length);
    }

    /**
     * Read an array.
     * Alias of the $this->scanf() method.
     */
    public function readArray($argument = null)
    {
        return $this->_input->readArray($argument);
    }

    /**
     * Read a line.
     */
    public function readLine()
    {
        return $this->_input->readLine();
    }

    /**
     * Read all, i.e. read as much as possible.
     */
    public function readAll(int $offset = 0)
    {
        return $this->_input->readAll($offset);
    }

    /**
     * Parse input from a stream according to a format.
     */
    public function scanf(string $format): array
    {
        return $this->_input->scanf($format);
    }
}

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