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<?php
namespace PhpOffice\PhpSpreadsheet\Reader;
use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\Reader\Exception as ReaderException;
use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Style\Border;
use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
class Slk extends BaseReader
{
/**
* Input encoding.
*
* @var string
*/
private $inputEncoding = 'ANSI';
/**
* Sheet index to read.
*
* @var int
*/
private $sheetIndex = 0;
/**
* Formats.
*
* @var array
*/
private $formats = [];
/**
* Format Count.
*
* @var int
*/
private $format = 0;
/**
* Fonts.
*
* @var array
*/
private $fonts = [];
/**
* Font Count.
*
* @var int
*/
private $fontcount = 0;
/**
* Create a new SYLK Reader instance.
*/
public function __construct()
{
parent::__construct();
}
/**
* Validate that the current file is a SYLK file.
*/
public function canRead(string $filename): bool
{
try {
$this->openFile($filename);
} catch (ReaderException $e) {
return false;
}
// Read sample data (first 2 KB will do)
$data = (string) fread($this->fileHandle, 2048);
// Count delimiters in file
$delimiterCount = substr_count($data, ';');
$hasDelimiter = $delimiterCount > 0;
// Analyze first line looking for ID; signature
$lines = explode("\n", $data);
$hasId = substr($lines[0], 0, 4) === 'ID;P';
fclose($this->fileHandle);
return $hasDelimiter && $hasId;
}
private function canReadOrBust(string $filename): void
{
if (!$this->canRead($filename)) {
throw new ReaderException($filename . ' is an Invalid SYLK file.');
}
$this->openFile($filename);
}
/**
* Set input encoding.
*
* @deprecated no use is made of this property
*
* @param string $inputEncoding Input encoding, eg: 'ANSI'
*
* @return $this
*
* @codeCoverageIgnore
*/
public function setInputEncoding($inputEncoding)
{
$this->inputEncoding = $inputEncoding;
return $this;
}
/**
* Get input encoding.
*
* @deprecated no use is made of this property
*
* @return string
*
* @codeCoverageIgnore
*/
public function getInputEncoding()
{
return $this->inputEncoding;
}
/**
* Return worksheet info (Name, Last Column Letter, Last Column Index, Total Rows, Total Columns).
*
* @param string $filename
*
* @return array
*/
public function listWorksheetInfo($filename)
{
// Open file
$this->canReadOrBust($filename);
$fileHandle = $this->fileHandle;
rewind($fileHandle);
$worksheetInfo = [];
$worksheetInfo[0]['worksheetName'] = basename($filename, '.slk');
// loop through one row (line) at a time in the file
$rowIndex = 0;
$columnIndex = 0;
while (($rowData = fgets($fileHandle)) !== false) {
$columnIndex = 0;
// convert SYLK encoded $rowData to UTF-8
$rowData = StringHelper::SYLKtoUTF8($rowData);
// explode each row at semicolons while taking into account that literal semicolon (;)
// is escaped like this (;;)
$rowData = explode("\t", str_replace('¤', ';', str_replace(';', "\t", str_replace(';;', '¤', rtrim($rowData)))));
$dataType = array_shift($rowData);
if ($dataType == 'B') {
foreach ($rowData as $rowDatum) {
switch ($rowDatum[0]) {
case 'X':
$columnIndex = (int) substr($rowDatum, 1) - 1;
break;
case 'Y':
$rowIndex = substr($rowDatum, 1);
break;
}
}
break;
}
}
$worksheetInfo[0]['lastColumnIndex'] = $columnIndex;
$worksheetInfo[0]['totalRows'] = $rowIndex;
$worksheetInfo[0]['lastColumnLetter'] = Coordinate::stringFromColumnIndex($worksheetInfo[0]['lastColumnIndex'] + 1);
$worksheetInfo[0]['totalColumns'] = $worksheetInfo[0]['lastColumnIndex'] + 1;
// Close file
fclose($fileHandle);
return $worksheetInfo;
}
/**
* Loads PhpSpreadsheet from file.
*/
protected function loadSpreadsheetFromFile(string $filename): Spreadsheet
{
// Create new Spreadsheet
$spreadsheet = new Spreadsheet();
// Load into this instance
return $this->loadIntoExisting($filename, $spreadsheet);
}
private const COLOR_ARRAY = [
'FF00FFFF', // 0 - cyan
'FF000000', // 1 - black
'FFFFFFFF', // 2 - white
'FFFF0000', // 3 - red
'FF00FF00', // 4 - green
'FF0000FF', // 5 - blue
'FFFFFF00', // 6 - yellow
'FFFF00FF', // 7 - magenta
];
private const FONT_STYLE_MAPPINGS = [
'B' => 'bold',
'I' => 'italic',
'U' => 'underline',
];
private function processFormula(string $rowDatum, bool &$hasCalculatedValue, string &$cellDataFormula, string $row, string $column): void
{
$cellDataFormula = '=' . substr($rowDatum, 1);
// Convert R1C1 style references to A1 style references (but only when not quoted)
$temp = explode('"', $cellDataFormula);
$key = false;
foreach ($temp as &$value) {
// Only count/replace in alternate array entries
$key = !$key;
if ($key) {
preg_match_all('/(R(\[?-?\d*\]?))(C(\[?-?\d*\]?))/', $value, $cellReferences, PREG_SET_ORDER + PREG_OFFSET_CAPTURE);
// Reverse the matches array, otherwise all our offsets will become incorrect if we modify our way
// through the formula from left to right. Reversing means that we work right to left.through
// the formula
$cellReferences = array_reverse($cellReferences);
// Loop through each R1C1 style reference in turn, converting it to its A1 style equivalent,
// then modify the formula to use that new reference
foreach ($cellReferences as $cellReference) {
$rowReference = $cellReference[2][0];
// Empty R reference is the current row
if ($rowReference == '') {
$rowReference = $row;
}
// Bracketed R references are relative to the current row
if ($rowReference[0] == '[') {
$rowReference = (int) $row + (int) trim($rowReference, '[]');
}
$columnReference = $cellReference[4][0];
// Empty C reference is the current column
if ($columnReference == '') {
$columnReference = $column;
}
// Bracketed C references are relative to the current column
if ($columnReference[0] == '[') {
$columnReference = (int) $column + (int) trim($columnReference, '[]');
}
$A1CellReference = Coordinate::stringFromColumnIndex($columnReference) . $rowReference;
$value = substr_replace($value, $A1CellReference, $cellReference[0][1], strlen($cellReference[0][0]));
}
}
}
unset($value);
// Then rebuild the formula string
$cellDataFormula = implode('"', $temp);
$hasCalculatedValue = true;
}
private function processCRecord(array $rowData, Spreadsheet &$spreadsheet, string &$row, string &$column): void
{
// Read cell value data
$hasCalculatedValue = false;
$cellDataFormula = $cellData = '';
foreach ($rowData as $rowDatum) {
switch ($rowDatum[0]) {
case 'C':
case 'X':
$column = substr($rowDatum, 1);
break;
case 'R':
case 'Y':
$row = substr($rowDatum, 1);
break;
case 'K':
$cellData = substr($rowDatum, 1);
break;
case 'E':
$this->processFormula($rowDatum, $hasCalculatedValue, $cellDataFormula, $row, $column);
break;
case 'A':
$comment = substr($rowDatum, 1);
$columnLetter = Coordinate::stringFromColumnIndex((int) $column);
$spreadsheet->getActiveSheet()
->getComment("$columnLetter$row")
->getText()
->createText($comment);
break;
}
}
$columnLetter = Coordinate::stringFromColumnIndex((int) $column);
$cellData = Calculation::unwrapResult($cellData);
// Set cell value
$this->processCFinal($spreadsheet, $hasCalculatedValue, $cellDataFormula, $cellData, "$columnLetter$row");
}
private function processCFinal(Spreadsheet &$spreadsheet, bool $hasCalculatedValue, string $cellDataFormula, string $cellData, string $coordinate): void
{
// Set cell value
$spreadsheet->getActiveSheet()->getCell($coordinate)->setValue(($hasCalculatedValue) ? $cellDataFormula : $cellData);
if ($hasCalculatedValue) {
$cellData = Calculation::unwrapResult($cellData);
$spreadsheet->getActiveSheet()->getCell($coordinate)->setCalculatedValue($cellData);
}
}
private function processFRecord(array $rowData, Spreadsheet &$spreadsheet, string &$row, string &$column): void
{
// Read cell formatting
$formatStyle = $columnWidth = '';
$startCol = $endCol = '';
$fontStyle = '';
$styleData = [];
foreach ($rowData as $rowDatum) {
switch ($rowDatum[0]) {
case 'C':
case 'X':
$column = substr($rowDatum, 1);
break;
case 'R':
case 'Y':
$row = substr($rowDatum, 1);
break;
case 'P':
$formatStyle = $rowDatum;
break;
case 'W':
[$startCol, $endCol, $columnWidth] = explode(' ', substr($rowDatum, 1));
break;
case 'S':
$this->styleSettings($rowDatum, $styleData, $fontStyle);
break;
}
}
$this->addFormats($spreadsheet, $formatStyle, $row, $column);
$this->addFonts($spreadsheet, $fontStyle, $row, $column);
$this->addStyle($spreadsheet, $styleData, $row, $column);
$this->addWidth($spreadsheet, $columnWidth, $startCol, $endCol);
}
private const STYLE_SETTINGS_FONT = ['D' => 'bold', 'I' => 'italic'];
private const STYLE_SETTINGS_BORDER = [
'B' => 'bottom',
'L' => 'left',
'R' => 'right',
'T' => 'top',
];
private function styleSettings(string $rowDatum, array &$styleData, string &$fontStyle): void
{
$styleSettings = substr($rowDatum, 1);
$iMax = strlen($styleSettings);
for ($i = 0; $i < $iMax; ++$i) {
$char = $styleSettings[$i];
if (array_key_exists($char, self::STYLE_SETTINGS_FONT)) {
$styleData['font'][self::STYLE_SETTINGS_FONT[$char]] = true;
} elseif (array_key_exists($char, self::STYLE_SETTINGS_BORDER)) {
$styleData['borders'][self::STYLE_SETTINGS_BORDER[$char]]['borderStyle'] = Border::BORDER_THIN;
} elseif ($char == 'S') {
$styleData['fill']['fillType'] = \PhpOffice\PhpSpreadsheet\Style\Fill::FILL_PATTERN_GRAY125;
} elseif ($char == 'M') {
if (preg_match('/M([1-9]\\d*)/', $styleSettings, $matches)) {
$fontStyle = $matches[1];
}
}
}
}
private function addFormats(Spreadsheet &$spreadsheet, string $formatStyle, string $row, string $column): void
{
if ($formatStyle && $column > '' && $row > '') {
$columnLetter = Coordinate::stringFromColumnIndex((int) $column);
if (isset($this->formats[$formatStyle])) {
$spreadsheet->getActiveSheet()->getStyle($columnLetter . $row)->applyFromArray($this->formats[$formatStyle]);
}
}
}
private function addFonts(Spreadsheet &$spreadsheet, string $fontStyle, string $row, string $column): void
{
if ($fontStyle && $column > '' && $row > '') {
$columnLetter = Coordinate::stringFromColumnIndex((int) $column);
if (isset($this->fonts[$fontStyle])) {
$spreadsheet->getActiveSheet()->getStyle($columnLetter . $row)->applyFromArray($this->fonts[$fontStyle]);
}
}
}
private function addStyle(Spreadsheet &$spreadsheet, array $styleData, string $row, string $column): void
{
if ((!empty($styleData)) && $column > '' && $row > '') {
$columnLetter = Coordinate::stringFromColumnIndex((int) $column);
$spreadsheet->getActiveSheet()->getStyle($columnLetter . $row)->applyFromArray($styleData);
}
}
private function addWidth(Spreadsheet $spreadsheet, string $columnWidth, string $startCol, string $endCol): void
{
if ($columnWidth > '') {
if ($startCol == $endCol) {
$startCol = Coordinate::stringFromColumnIndex((int) $startCol);
$spreadsheet->getActiveSheet()->getColumnDimension($startCol)->setWidth((float) $columnWidth);
} else {
$startCol = Coordinate::stringFromColumnIndex((int) $startCol);
$endCol = Coordinate::stringFromColumnIndex((int) $endCol);
$spreadsheet->getActiveSheet()->getColumnDimension($startCol)->setWidth((float) $columnWidth);
do {
$spreadsheet->getActiveSheet()->getColumnDimension(++$startCol)->setWidth((float) $columnWidth);
} while ($startCol !== $endCol);
}
}
}
private function processPRecord(array $rowData, Spreadsheet &$spreadsheet): void
{
// Read shared styles
$formatArray = [];
$fromFormats = ['\-', '\ '];
$toFormats = ['-', ' '];
foreach ($rowData as $rowDatum) {
switch ($rowDatum[0]) {
case 'P':
$formatArray['numberFormat']['formatCode'] = str_replace($fromFormats, $toFormats, substr($rowDatum, 1));
break;
case 'E':
case 'F':
$formatArray['font']['name'] = substr($rowDatum, 1);
break;
case 'M':
$formatArray['font']['size'] = substr($rowDatum, 1) / 20;
break;
case 'L':
$this->processPColors($rowDatum, $formatArray);
break;
case 'S':
$this->processPFontStyles($rowDatum, $formatArray);
break;
}
}
$this->processPFinal($spreadsheet, $formatArray);
}
private function processPColors(string $rowDatum, array &$formatArray): void
{
if (preg_match('/L([1-9]\\d*)/', $rowDatum, $matches)) {
$fontColor = $matches[1] % 8;
$formatArray['font']['color']['argb'] = self::COLOR_ARRAY[$fontColor];
}
}
private function processPFontStyles(string $rowDatum, array &$formatArray): void
{
$styleSettings = substr($rowDatum, 1);
$iMax = strlen($styleSettings);
for ($i = 0; $i < $iMax; ++$i) {
if (array_key_exists($styleSettings[$i], self::FONT_STYLE_MAPPINGS)) {
$formatArray['font'][self::FONT_STYLE_MAPPINGS[$styleSettings[$i]]] = true;
}
}
}
private function processPFinal(Spreadsheet &$spreadsheet, array $formatArray): void
{
if (array_key_exists('numberFormat', $formatArray)) {
$this->formats['P' . $this->format] = $formatArray;
++$this->format;
} elseif (array_key_exists('font', $formatArray)) {
++$this->fontcount;
$this->fonts[$this->fontcount] = $formatArray;
if ($this->fontcount === 1) {
$spreadsheet->getDefaultStyle()->applyFromArray($formatArray);
}
}
}
/**
* Loads PhpSpreadsheet from file into PhpSpreadsheet instance.
*
* @param string $filename
*
* @return Spreadsheet
*/
public function loadIntoExisting($filename, Spreadsheet $spreadsheet)
{
// Open file
$this->canReadOrBust($filename);
$fileHandle = $this->fileHandle;
rewind($fileHandle);
// Create new Worksheets
while ($spreadsheet->getSheetCount() <= $this->sheetIndex) {
$spreadsheet->createSheet();
}
$spreadsheet->setActiveSheetIndex($this->sheetIndex);
$spreadsheet->getActiveSheet()->setTitle(substr(basename($filename, '.slk'), 0, Worksheet::SHEET_TITLE_MAXIMUM_LENGTH));
// Loop through file
$column = $row = '';
// loop through one row (line) at a time in the file
while (($rowDataTxt = fgets($fileHandle)) !== false) {
// convert SYLK encoded $rowData to UTF-8
$rowDataTxt = StringHelper::SYLKtoUTF8($rowDataTxt);
// explode each row at semicolons while taking into account that literal semicolon (;)
// is escaped like this (;;)
$rowData = explode("\t", str_replace('¤', ';', str_replace(';', "\t", str_replace(';;', '¤', rtrim($rowDataTxt)))));
$dataType = array_shift($rowData);
if ($dataType == 'P') {
// Read shared styles
$this->processPRecord($rowData, $spreadsheet);
} elseif ($dataType == 'C') {
// Read cell value data
$this->processCRecord($rowData, $spreadsheet, $row, $column);
} elseif ($dataType == 'F') {
// Read cell formatting
$this->processFRecord($rowData, $spreadsheet, $row, $column);
} else {
$this->columnRowFromRowData($rowData, $column, $row);
}
}
// Close file
fclose($fileHandle);
// Return
return $spreadsheet;
}
private function columnRowFromRowData(array $rowData, string &$column, string &$row): void
{
foreach ($rowData as $rowDatum) {
$char0 = $rowDatum[0];
if ($char0 === 'X' || $char0 == 'C') {
$column = substr($rowDatum, 1);
} elseif ($char0 === 'Y' || $char0 == 'R') {
$row = substr($rowDatum, 1);
}
}
}
/**
* Get sheet index.
*
* @return int
*/
public function getSheetIndex()
{
return $this->sheetIndex;
}
/**
* Set sheet index.
*
* @param int $sheetIndex Sheet index
*
* @return $this
*/
public function setSheetIndex($sheetIndex)
{
$this->sheetIndex = $sheetIndex;
return $this;
}
}