112 lines
3.2 KiB
PHP
112 lines
3.2 KiB
PHP
<?php
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/**
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* Customized implementation of the Zend/Laminas Config XML Writer object.
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*/
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declare(strict_types=1);
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namespace App\Xml;
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use RuntimeException;
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use XMLWriter;
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class Writer
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{
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public static function toString(
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array $config,
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string $baseElement = 'xml-config'
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): string {
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return self::processConfig($config, $baseElement);
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}
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protected static function processConfig(
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array $config,
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string $baseElement = 'xml-config'
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): string {
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$writer = new XMLWriter();
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$writer->openMemory();
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$writer->setIndent(true);
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$writer->setIndentString(str_repeat(' ', 4));
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$writer->startDocument('1.0', 'UTF-8');
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$writer->startElement($baseElement);
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// Make sure attributes come first
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uksort($config, [self::class, 'attributesFirst']);
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foreach ($config as $sectionName => $data) {
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if (!is_array($data)) {
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if (str_starts_with($sectionName, '@')) {
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$writer->writeAttribute(substr($sectionName, 1), (string)$data);
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} else {
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$writer->writeElement($sectionName, (string)$data);
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}
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} else {
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self::addBranch($sectionName, $data, $writer);
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}
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}
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$writer->endElement();
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$writer->endDocument();
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return $writer->outputMemory();
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}
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protected static function addBranch(
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mixed $branchName,
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array $config,
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XMLWriter $writer
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): void {
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$branchType = null;
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// Ensure attributes come first.
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uksort($config, [self::class, 'attributesFirst']);
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foreach ($config as $key => $value) {
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if ($branchType === null) {
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if (is_numeric($key)) {
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$branchType = 'numeric';
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} else {
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$writer->startElement($branchName);
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$branchType = 'string';
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}
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} elseif ($branchType !== (is_numeric($key) ? 'numeric' : 'string')) {
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throw new RuntimeException('Mixing of string and numeric keys is not allowed');
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}
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if ($branchType === 'numeric') {
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if (is_array($value)) {
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self::addBranch($branchName, $value, $writer);
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} else {
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$writer->writeElement($branchName, (string)$value);
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}
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} else {
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/** @var string $key */
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if (is_array($value)) {
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self::addBranch($key, $value, $writer);
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} elseif (str_starts_with($key, '@')) {
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$writer->writeAttribute(substr($key, 1), (string)$value);
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} else {
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$writer->writeElement($key, (string)$value);
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}
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}
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}
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if ($branchType === 'string') {
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$writer->endElement();
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}
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}
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protected static function attributesFirst(mixed $a, mixed $b): int
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{
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if (str_starts_with((string)$a, '@')) {
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return -1;
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}
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if (str_starts_with((string)$b, '@')) {
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return 1;
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}
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return 0;
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}
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}
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