<?php
/**
  * @file spreadsheet-reader.lnk.php
  * @date 2018-09-20
  * @author Go Namhyeon <gnh1201@gmail.com>
  * @brief Excel file parser
***/

// load spreadsheet reader library
loadVendor(array(
	"spreadsheet-reader/php-excel-reader/excel_reader2",
	"spreadsheet-reader/SpreadsheetReader",
	"spreadsheet-reader/SpreadsheetReader_CSV",
	"spreadsheet-reader/SpreadsheetReader_XLSX",
	"spreadsheet-reader/SpreadsheetReader_XLS",
	"spreadsheet-reader/SpreadsheetReader_ODS"
));

if(!function_exists("parse_excel_file")) {
	function parse_excel_file($filepath, $format="xlsx", $setColumnName=false) {
		$rows = array();
		
		$spreadsheet = false;
		$columnNames = array();
		$fileFormat = strtolower($format);
		
		if($fileFormat == "xlsx") {
			$spreadsheet = new SpreadsheetReader_XLSX($filepath);
		} elseif($fileFormat == "xls") {
			$spreadsheet = new SpreadsheetReader_XLS($filepath);
		} elseif($fileFormat == "csv") {
			$spreadsheet = new SpreadsheetReader_CSV($filepath);
		} elseif($fileFormat == "ods") {
			$spreadsheet = new SpreadsheetReader_ODS($filepath);
		} else {
			$spreadsheet = new SpreadsheetReader($filepath);
		}
		
		foreach($spreadsheet as $index=>$row) {
			if(!$setColumnName) {
				$rows[] = $row;
			} else {
				if($index > 0) {
					$i = 0;
					$cols = array();
					foreach($row as $col) {
						if((count($columnNames) - 1) > $i) {
							$cols[$columnNames[$i]] = $col;
						} else {
							$cols[] = $col;	
						}
						$i++;
					}
					$rows[] = $cols;
				} else {
					$columnNames = array_merge($columnNames, $row);
				}
			}
		}

		return $rows;
	}
}