3 namespace Org\Mxchange\CoreFramework\Filesystem\Input\Csv;
5 // Import framework stuff
6 use Org\Mxchange\CoreFramework\Filesystem\Text\BaseInputTextFile;
7 use Org\Mxchange\CoreFramework\Stream\Filesystem\CsvInputStreamer;
13 * A CSV file input class for writing CSV files
15 * @author Roland Haeder <webmaster@ship-simu.org>
17 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2020 Core Developer Team
18 * @license GNU GPL 3.0 or any newer version
19 * @link http://www.ship-simu.org
21 * This program is free software: you can redistribute it and/or modify
22 * it under the terms of the GNU General Public License as published by
23 * the Free Software Foundation, either version 3 of the License, or
24 * (at your option) any later version.
26 * This program is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
31 * You should have received a copy of the GNU General Public License
32 * along with this program. If not, see <http://www.gnu.org/licenses/>.
34 class CsvInputFile extends BaseInputTextFile implements CsvInputStreamer {
36 * Protected constructor
40 protected function __construct () {
41 // Call parent constructor
42 parent::__construct(__CLASS__);
46 * Creates an instance of this File class and prepares it for usage
48 * @param $infoInstance An instance of a SplFileInfo class
49 * @return $fileInstance An instance of this File class
51 public final static function createCsvInputFile (SplFileInfo $infoInstance) {
53 $fileInstance = new CsvInputFile();
55 // Init this abstract file
56 $fileInstance->initFile($infoInstance);
58 // Return the prepared instance
63 * Reads a line from CSV file and returns it as an indexed array. Please
64 * note that strings *must* be always in double-quotes, else any found
65 * column separators will be parsed or they may be interpreted incorrectly.
67 * @param $columnSeparator Character to use separting columns
68 * @return $lineArray An indexed array with the read line
70 public function readCsvFileLine (string $columnSeparator) {
72 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] columnSeparator=%s - CALLED!', __METHOD__, __LINE__, $columnSeparator));
73 $data = $this->getPointerInstance()->readLine();
76 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] data()=%d', __METHOD__, __LINE__, strlen($data)));
77 $lineArray = $this->parseDataToIndexedArray($data, $columnSeparator);
80 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] lineArray()=%d - EXIT!', __METHOD__, __LINE__, count($lineArray)));
85 * Parses given data into an array
87 * @param $data Raw data e.g. returned from readLine()
88 * @param $columnSeparator Character to use separting columns
89 * @return $lineArray An indexed array with the read line
91 private function parseDataToIndexedArray (string $data, string $columnSeparator) {
93 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] data()=%d,columnSeparator=%s - CALLED!', __METHOD__, __LINE__, strlen($data), $columnSeparator));
96 // Whether the parser reads a quoted string (which may contain the column separator again)
102 // Now parse the line
103 for ($idx = 0; $idx < strlen($data); $idx++) {
105 $char = substr($data, $idx, 1);
107 // Is the column separator found and not within quotes?
108 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] idx=%d,char=%s ...', __METHOD__, __LINE__, $idx, $char));
109 if (($isInQuotes === false) && ($char == $columnSeparator)) {
110 // Add this line to the array
111 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] Adding column=%s ...', __METHOD__, __LINE__, $column));
112 array_push($lineArray, $column);
114 // Clear variable ...
115 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] line[]=%d - After add!', __METHOD__, __LINE__, count($lineArray)));
120 } elseif ($char == chr(34)) {
121 // $column must be empty at this point if we are at starting quote
122 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] column=%s ...', __METHOD__, __LINE__, $column));
123 assert(($isInQuotes === true) || (empty($column)));
125 // Double-quote found, so flip variable
126 $isInQuotes = (!$isInQuotes);
128 // Skip double-quote (escaping of them is not yet supported)
129 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] isInQuotes=%d ...', __METHOD__, __LINE__, intval($isInQuotes)));
133 // Add char to column
134 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] Adding char=%s ...', __METHOD__, __LINE__, $idx, $char));
138 // Is there something outstanding?
139 if (!empty($column)) {
140 // Then don't forget this. :-)
141 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] Adding column=%s ...', __METHOD__, __LINE__, $column));
142 array_push($lineArray, $column);
145 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] line[]=%d - After add!', __METHOD__, __LINE__, count($lineArray)));
149 //* NOISY-DEBUG: */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('[%s:%d:] line[]=%d - EXIT!', __METHOD__, __LINE__, count($lineArray)));