<?php

namespace Sepia;

/**
 *    Copyright (c) 2012 Raúl Ferràs raul.ferras@gmail.com
 *    All rights reserved.
 *
 *    Redistribution and use in source and binary forms, with or without
 *    modification, are permitted provided that the following conditions
 *    are met:
 *    1. Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *    2. 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.
 *    3. Neither the name of copyright holders 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 COPYRIGHT HOLDERS OR 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.
 *
 * https://github.com/raulferras/PHP-po-parser
 */
class FileHandler implements InterfaceHandler
{
    protected $fileHandle;
    protected $encoding;

    public function __construct($filepath)
    {
        if (file_exists($filepath) === false) {
            throw new \Exception('PoParser: Input File does not exists: "' . htmlspecialchars($filepath) . '"');
        } elseif (is_readable($filepath) === false) {
            throw new \Exception('PoParser: File is not readable: "' . htmlspecialchars($filepath) . '"');
        }

        $this->fileHandle = @fopen($filepath, "r");
        if ($this->fileHandle===false) {
            throw new \Exception('PoParser: Could not open file: "' . htmlspecialchars($filepath) . '"');
        }


        // Guess encoding
        $wholefile = file_get_contents($filepath, false, null, 0, 1000);
        $encoding  = mb_detect_encoding($wholefile);
        if ($encoding===false) {

        } else {
            $this->encoding = $encoding;
        }
    }


    public function getNextLine()
    {
        return fgets($this->fileHandle);
    }

    public function ended()
    {
        return feof($this->fileHandle);
    }

    public function close()
    {
        return @fclose($this->fileHandle);
    }


    public function save($outputFile)
    {

    }
}