69 lines
1.8 KiB
PHP
69 lines
1.8 KiB
PHP
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<?php namespace RainLab\Builder\Classes;
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/**
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* Parses migrations source files.
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*
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* @package rainlab\builder
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* @author Alexey Bobkov, Samuel Georges
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*/
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class MigrationFileParser
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{
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/**
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* Returns the migration namespace and class name.
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* @param string $fileContents Specifies the file contents.
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* @return array|null Returns an array with keys 'class', 'namespace'.
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* Returns null if the parsing fails.
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*/
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public function extractMigrationInfoFromSource($fileContents)
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{
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$stream = new PhpSourceStream($fileContents);
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$result = [];
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while ($stream->forward()) {
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$tokenCode = $stream->getCurrentCode();
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if ($tokenCode == T_NAMESPACE) {
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$namespace = $this->extractNamespace($stream);
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if ($namespace === null) {
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return null;
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}
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$result['namespace'] = $namespace;
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}
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if ($tokenCode == T_CLASS) {
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$className = $this->extractClassName($stream);
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if ($className === null) {
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return null;
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}
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$result['class'] = $className;
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}
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}
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if (!$result) {
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return null;
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}
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return $result;
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}
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protected function extractClassName($stream)
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{
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if ($stream->getNextExpected(T_WHITESPACE) === null) {
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return null;
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}
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return $stream->getNextExpectedTerminated([T_STRING], [T_WHITESPACE, ';']);
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}
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protected function extractNamespace($stream)
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{
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if ($stream->getNextExpected(T_WHITESPACE) === null) {
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return null;
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}
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return $stream->getNextExpectedTerminated([T_STRING, T_NS_SEPARATOR], [T_WHITESPACE, ';']);
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}
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}
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