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lib/SimpleExcel/Parser/CSVParser.php

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+<?php
+ 
+namespace SimpleExcel\Parser;
+
+use SimpleExcel\Exception\SimpleExcelException;
+
+/**
+ * SimpleExcel class for parsing Microsoft Excel CSV Spreadsheet
+ *  
+ * @author  Faisalman
+ * @package SimpleExcel
+ */
+class CSVParser extends BaseParser implements IParser
+{    
+ /**
+	* Defines delimiter character
+	* 
+	* @access   protected
+	* @var      string
+	*/
+	protected $delimiter;
+	
+	/**
+	* Defines valid file extension
+	* 
+	* @access   protected
+	* @var      string
+	*/
+	protected $file_extension = 'csv';
+
+	/**
+	* Load the CSV file to be parsed
+	* 
+	* @param    string  $file_path  Path to CSV file
+	*/
+	public function loadFile($file_path){
+	
+		if (!$this->isFileReady($file_path)) {
+			return;
+		}
+
+		$this->loadString(file_get_contents($file_path));
+	}
+	
+	/**
+	* Load the string to be parsed
+	* 
+	* @param    string  $str    String with CSV format
+	*/
+	public function loadString($str){
+		$this->table_arr = array();
+		
+	// 1. Split into lines by newline http://stackoverflow.com/questions/3997336/explode-php-string-by-new-line 
+		$pattern = "/\r\n|\n|\r/";
+		$lines   = preg_split($pattern, $str, -1, PREG_SPLIT_NO_EMPTY);
+		$total   = count($lines);
+		
+		// There are no lines to parse
+		if ($total == 0) {
+			return;
+		}
+		
+		// 2. Guess delimiter if none set
+		$line = $lines[0];
+		if (!isset($this->delimiter)) {
+			// do guess work
+			$separators = array(';' => 0, ',' => 0);
+			foreach ($separators as $sep => $count) {
+				$args  = str_getcsv($sep, $line);
+				$count = count($args);
+				
+				$separators[$sep] = $count;
+			}
+			
+			$sep = ',';
+			if (($separators[';'] > $separators[','])) {
+				$sep = ';';
+			}
+			
+			$this->delimiter = $sep;
+		}
+		
+		// 3. Parse the lines into rows,cols
+		$max  = 0;
+		$min  = PHP_INT_MAX;
+		$cols = 0;
+		$sep  = $this->delimiter;
+		$rows = array(); 
+		foreach ($lines as $line) {
+			$args   = str_getcsv($line, $sep);
+			$rows[] = $args;
+			
+			$cols = count($args);
+			if ($cols > $max) {
+				$max = $cols;
+			}
+			if ($cols < $min) {
+				$min = $cols;
+			}
+		}
+		
+		// 4. Expand those rows which have less cols than max cols found
+		if ($min != $max) {
+			foreach ($rows as $i => $row) {
+				$c = count($row);
+				while ($c < $max) {
+					$row[] = ""; // fill with empty strings
+					$c += 1;
+				}
+				$rows[$i] = $row;
+			}
+		}
+		$this->table_arr = $rows;
+	}
+	
+	/**
+	* Set delimiter that should be used to parse CSV document
+	* 
+	* @param    string  $delimiter   Delimiter character
+	*/
+	public function setDelimiter($delimiter){
+		$this->delimiter = $delimiter;
+	}
+}