90 lines
2.5 KiB
PHP
90 lines
2.5 KiB
PHP
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<?php
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declare(strict_types = 1);
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namespace LanguageServer;
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use LanguageServer\Protocol\ {
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TextEdit,
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Range,
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Position
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};
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use PHP_CodeSniffer;
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use Exception;
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abstract class Formatter
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{
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/**
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* Generate array of TextEdit changes for content formatting.
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*
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* @param string $content source code to format
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* @param string $uri URI of document
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*
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* @return \LanguageServer\Protocol\TextEdit[]
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* @throws \Exception
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*/
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public static function format(string $content, string $uri)
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{
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$path = uriToPath($uri);
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$cs = new PHP_CodeSniffer();
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$cs->initStandard(self::findConfiguration($path));
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$file = $cs->processFile(null, $content);
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$fixed = $file->fixer->fixFile();
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if (!$fixed && $file->getErrorCount() > 0) {
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throw new Exception('Unable to format file');
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}
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$new = $file->fixer->getContents();
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if ($content === $new) {
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return [];
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}
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return [new TextEdit(new Range(new Position(0, 0), self::calculateEndPosition($content)), $new)];
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}
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/**
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* Calculate position of last character.
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*
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* @param string $content document as string
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*
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* @return \LanguageServer\Protocol\Position
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*/
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private static function calculateEndPosition(string $content): Position
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{
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$lines = explode("\n", $content);
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return new Position(count($lines) - 1, strlen(end($lines)));
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}
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/**
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* Search for PHP_CodeSniffer configuration file at given directory or its parents.
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* If no configuration found then PSR2 standard is loaded by default.
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*
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* @param string $path path to file or directory
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* @return string[]
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*/
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private static function findConfiguration(string $path)
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{
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if (is_dir($path)) {
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$currentDir = $path;
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} else {
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$currentDir = dirname($path);
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}
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do {
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$default = $currentDir . DIRECTORY_SEPARATOR . 'phpcs.xml';
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if (is_file($default)) {
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return [$default];
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}
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$default = $currentDir . DIRECTORY_SEPARATOR . 'phpcs.xml.dist';
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if (is_file($default)) {
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return [$default];
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}
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$lastDir = $currentDir;
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$currentDir = dirname($currentDir);
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} while ($currentDir !== '.' && $currentDir !== $lastDir);
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$standard = PHP_CodeSniffer::getConfigData('default_standard') ?? 'PSR2';
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return explode(',', $standard);
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}
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}
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