backend/components/parsers/CsvParser.php

<?php
/**
 * Created by PhpStorm.
 * User: Cibermag
 * Date: 26.08.2015
 * Time: 17:00
 */
namespace backend\components\parsers;
use Yii;
use yii\base\ErrorException;
class CsvParser implements \IteratorAggregate {
    /** @var bool */
    private $hasHeaderRow;
    /** @var resource */
    private $file;
    /** @var out encoding charset */
    private $out_charset = 'UTF-8';
    /** @var out encoding charset */
    private $in_charset;
    /** @var int - first line for parsing */
    private $first_line;
    /** @var int - first column for parsing */
    private $first_column;
    public function setup( $file, $first_line, $first_column, $hasHeaderRow = TRUE, $delimiter = ';')
    {
        $this->first_line = $first_line;
        $this->first_column = $first_column;
        $this->file = $file;
        $this->file->setCsvControl($delimiter);
        $this->file->setFlags(\SplFileObject::READ_CSV);
        $this->file->seek( $this->first_line );
        $this->in_charset = 'windows-1251';
        $this->hasHeaderRow = $hasHeaderRow;
    }
    public function getIterator()
    {
        return new \ArrayIterator($this->read());
    }
    /**
     * @return array
     * @throws InvalidFileException
     * @deprecated Use ::read instead.
     */
    public function parseAll()
    {
        return $this->read();
    }
    /**
     * @return array
     * @throws InvalidFileException
     */
    public function read()
    {
        // @todo add comments
        $return = [];
        $line = 0;
        $keys = NULL;
        while (($row = $this->readRow()) !== FALSE) {
            $line++;
            if ($this->hasHeaderRow) {
                if ($keys === NULL) {
                    $keys = array_values($row);
                } else {
                    if (count($keys) !== count($row)) {
//
                        Yii::warning("Invalid columns detected on line #$line .");
                        return $return;
                    }
                    $return[] = array_combine($keys, $row);
                }
            } else {
                $return[] = $row;
            }
        }
        $this->closeHandler();
        return $return;
    }
    private function closeHandler()
    {
        $this->file = NULL;
    }
    private function readRow()
        // @todo add comments
    {
        $dirt_value_arr = $this->file->fgetcsv(  );
        $dirt_value_arr = array_slice( $dirt_value_arr, $this->first_column );
        $clear_arr = Encoder::encodeArray( $this->in_charset, $this->out_charset, $dirt_value_arr );
        return $clear_arr;
    }
//    private function encodeArray( $array_to_encode )
//    {
//        return array_map(function($array_to_encode) {
//            return iconv( $this->in_charset, $this->out_charset, $array_to_encode );
//        }, $array_to_encode);
//
//    }
}