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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** @license For full copyright and license information, please see the LICENSE.md file. */ |
| 6 | |
| 7 | namespace App\Core\DataExchange\Infrastructure\Writer; |
| 8 | |
| 9 | defined('AMMONLY_APP') || exit('Direct script access is forbidden.'); |
| 10 | |
| 11 | use App\Core\DataExchange\Domain\Exception\DataExchangeException; |
| 12 | use ZipArchive; |
| 13 | |
| 14 | /** |
| 15 | * Memory-efficient streaming writer producing standard OpenXML (.xlsx) workbooks. |
| 16 | * Uses inlineStr XML elements to avoid in-memory string tables. |
| 17 | * |
| 18 | * @package App\Core\DataExchange\Infrastructure\Writer |
| 19 | */ |
| 20 | final class XlsxTabularStreamWriter implements TabularStreamWriterInterface |
| 21 | { |
| 22 | private const string XML_DECLARATION = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>'; |
| 23 | |
| 24 | /** @var resource */ |
| 25 | private $tempSheetHandle; |
| 26 | |
| 27 | private string $tempSheetPath; |
| 28 | private int $currentRowIndex = 0; |
| 29 | private bool $isClosed = false; |
| 30 | |
| 31 | /** |
| 32 | * @param string $outputPath Destination XLSX file path. |
| 33 | */ |
| 34 | public function __construct(private readonly string $outputPath) |
| 35 | { |
| 36 | $tempPath = tempnam(sys_get_temp_dir(), 'ammonly_xlsx_'); |
| 37 | if ($tempPath === false) { |
| 38 | throw new DataExchangeException('Failed to allocate temporary file for XLSX streaming.'); |
| 39 | } |
| 40 | |
| 41 | $this->tempSheetPath = $tempPath; |
| 42 | $handle = fopen($this->tempSheetPath, 'w+'); |
| 43 | if ($handle === false) { |
| 44 | throw new DataExchangeException("Failed to open temporary file for writing: {$this->tempSheetPath}"); |
| 45 | } |
| 46 | |
| 47 | $this->tempSheetHandle = $handle; |
| 48 | |
| 49 | fwrite( |
| 50 | $this->tempSheetHandle, |
| 51 | self::XML_DECLARATION . "\n" . |
| 52 | '<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">' . "\n" . |
| 53 | ' <sheetData>' . "\n" |
| 54 | ); |
| 55 | } |
| 56 | |
| 57 | /** {@inheritdoc} */ |
| 58 | public function writeHeaders(array $headers): void |
| 59 | { |
| 60 | $this->writeRow($headers); |
| 61 | } |
| 62 | |
| 63 | /** {@inheritdoc} */ |
| 64 | public function writeRow(array $row): void |
| 65 | { |
| 66 | $this->currentRowIndex++; |
| 67 | $rowXml = ' <row r="' . $this->currentRowIndex . '">' . "\n"; |
| 68 | |
| 69 | $colIdx = 0; |
| 70 | foreach ($row as $cellValue) { |
| 71 | $coord = $this->getCellCoordinate($colIdx, $this->currentRowIndex); |
| 72 | $rowXml .= $this->buildCellXml($coord, $cellValue); |
| 73 | $colIdx++; |
| 74 | } |
| 75 | |
| 76 | $rowXml .= ' </row>' . "\n"; |
| 77 | fwrite($this->tempSheetHandle, $rowXml); |
| 78 | } |
| 79 | |
| 80 | /** {@inheritdoc} */ |
| 81 | public function close(): void |
| 82 | { |
| 83 | if ($this->isClosed) { |
| 84 | return; |
| 85 | } |
| 86 | |
| 87 | fwrite($this->tempSheetHandle, " </sheetData>\n</worksheet>\n"); |
| 88 | fflush($this->tempSheetHandle); |
| 89 | fclose($this->tempSheetHandle); |
| 90 | |
| 91 | $this->buildZipPackage(); |
| 92 | |
| 93 | if (file_exists($this->tempSheetPath)) { |
| 94 | @unlink($this->tempSheetPath); |
| 95 | } |
| 96 | |
| 97 | $this->isClosed = true; |
| 98 | } |
| 99 | |
| 100 | /** {@inheritdoc} */ |
| 101 | public function getMimeType(): string |
| 102 | { |
| 103 | return 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'; |
| 104 | } |
| 105 | |
| 106 | /** {@inheritdoc} */ |
| 107 | public function getFileExtension(): string |
| 108 | { |
| 109 | return 'xlsx'; |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Assembles the full OpenXML ZIP container package. |
| 114 | */ |
| 115 | private function buildZipPackage(): void |
| 116 | { |
| 117 | $zip = new ZipArchive(); |
| 118 | if ($zip->open($this->outputPath, ZipArchive::CREATE | ZipArchive::OVERWRITE) !== true) { |
| 119 | throw new DataExchangeException("Failed to create ZIP package: {$this->outputPath}"); |
| 120 | } |
| 121 | |
| 122 | $contentTypes = self::XML_DECLARATION . "\n" . |
| 123 | '<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">' . "\n" . |
| 124 | ' <Default Extension="rels" ' . |
| 125 | 'ContentType="application/vnd.openxmlformats-package.relationships+xml"/>' . "\n" . |
| 126 | ' <Default Extension="xml" ContentType="application/xml"/>' . "\n" . |
| 127 | ' <Override PartName="/xl/workbook.xml" ' . |
| 128 | 'ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml"/>' . "\n" . |
| 129 | ' <Override PartName="/xl/worksheets/sheet1.xml" ' . |
| 130 | 'ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml"/>' . "\n" . |
| 131 | '</Types>'; |
| 132 | |
| 133 | $rootRels = self::XML_DECLARATION . "\n" . |
| 134 | '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">' . "\n" . |
| 135 | ' <Relationship Id="rId1" ' . |
| 136 | 'Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" ' . |
| 137 | 'Target="xl/workbook.xml"/>' . "\n" . |
| 138 | '</Relationships>'; |
| 139 | |
| 140 | $workbookRels = self::XML_DECLARATION . "\n" . |
| 141 | '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">' . "\n" . |
| 142 | ' <Relationship Id="rId1" ' . |
| 143 | 'Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" ' . |
| 144 | 'Target="worksheets/sheet1.xml"/>' . "\n" . |
| 145 | '</Relationships>'; |
| 146 | |
| 147 | $workbookXml = self::XML_DECLARATION . "\n" . |
| 148 | '<workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" ' . |
| 149 | 'xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">' . "\n" . |
| 150 | ' <sheets>' . "\n" . |
| 151 | ' <sheet name="Sheet1" sheetId="1" r:id="rId1"/>' . "\n" . |
| 152 | ' </sheets>' . "\n" . |
| 153 | '</workbook>'; |
| 154 | |
| 155 | $zip->addFromString('[Content_Types].xml', $contentTypes); |
| 156 | $zip->addFromString('_rels/.rels', $rootRels); |
| 157 | $zip->addFromString('xl/_rels/workbook.xml.rels', $workbookRels); |
| 158 | $zip->addFromString('xl/workbook.xml', $workbookXml); |
| 159 | $zip->addFile($this->tempSheetPath, 'xl/worksheets/sheet1.xml'); |
| 160 | |
| 161 | $zip->close(); |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Converts a zero-based column and 1-based row index to an A1 cell reference. |
| 166 | */ |
| 167 | private function getCellCoordinate(int $colIndex, int $rowIndex): string |
| 168 | { |
| 169 | $letter = ''; |
| 170 | $temp = $colIndex; |
| 171 | while ($temp >= 0) { |
| 172 | $letter = chr($temp % 26 + 65) . $letter; |
| 173 | $temp = intdiv($temp, 26) - 1; |
| 174 | } |
| 175 | |
| 176 | return $letter . $rowIndex; |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Formats cell XML node with proper typing and formula injection mitigation. |
| 181 | */ |
| 182 | private function buildCellXml(string $coord, mixed $value): string |
| 183 | { |
| 184 | if ($value === null || $value === '') { |
| 185 | return ' <c r="' . $coord . '"/>' . "\n"; |
| 186 | } |
| 187 | |
| 188 | if (is_int($value) || (is_numeric($value) && !preg_match('/^0\d+/', (string) $value))) { |
| 189 | return ' <c r="' . $coord . '" t="n"><v>' . (string) $value . '</v></c>' . "\n"; |
| 190 | } |
| 191 | |
| 192 | $str = (string) $value; |
| 193 | if (in_array($str[0], ['=', '+', '-', '@', "\t", "\r"], true)) { |
| 194 | $str = "'" . $str; |
| 195 | } |
| 196 | |
| 197 | $escaped = htmlspecialchars($str, ENT_XML1, 'UTF-8'); |
| 198 | |
| 199 | return ' <c r="' . $coord . '" t="inlineStr"><is><t>' . $escaped . '</t></is></c>' . "\n"; |
| 200 | } |
| 201 | } |