FileLoader::buildJSLoadingSequence()

Complexity

Conditions	17
Paths	975

Size

Total Lines	106
Code Lines	56

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

<?php
	private function buildJSLoadingSequence($files, $coreFiles = [], $libFiles = []) {
		// Create a lookup table to easily get the classes which are defined in the library files
		$libFileLookup = [];
		// Create a lookup table to easily get the name of the file the class is defined in
		$classFileLookup = [];

		$fileDataLookup = [];
		$fileDependencies = [];

		// Read all library files to determine the classes which are defined
		for ($i = 0, $len = count($libFiles); $i < $len; ++$i) {
			$filename = $libFiles[$i];
			$content = $this->getFileContents($filename);

			$class = [];
			preg_match_all('(@class\W([^\n\r]*))', $content, $class);

			$libFileLookup[$filename] = [
				'class' => $class[1],
			];

			for ($j = 0, $lenJ = count($class[1]); $j < $lenJ; ++$j) {
				$libFileLookup[$class[1][$j]] = true;
			}
		}

		for ($i = 0, $len = count($files); $i < $len; ++$i) {
			$content = $this->getFileContents($files[$i]);
			$filename = $files[$i];

			$extends = [];
			$dependsFile = [];
			$class = [];

			preg_match_all('(@extends\W([^\n\r]*))', $content, $extends);
			preg_match_all('(@class\W([^\n\r]*))', $content, $class);
			preg_match_all('(#dependsFile\W([^\n\r\*]+))', $content, $dependsFile);
			$core = (str_contains($content, '#core')) ? true : false;

			for ($j = 0, $lenJ = count($coreFiles); $j < $lenJ; ++$j) {
				if (str_starts_with((string) $filename, (string) $coreFiles[$j])) {
					$core = true;
					break;
				}
			}

			$fileDataLookup[$filename] = [
				'class' => $class[1],
				'extends' => $extends[1],
				'dependsFile' => $dependsFile[1],
			];
			$fileDependencies[$filename] = [
				'depends' => [],
				'core' => $core,		// Based on tag or on class or on file path?
			];

			for ($j = 0, $lenJ = count($class[1]); $j < $lenJ; ++$j) {
				$classFileLookup[$class[1][$j]] = $filename;
			}
		}

		// Convert dependencies found by searching for @extends to a filename.
		foreach ($fileDataLookup as $filename => &$fileData) {
			// First get the extended class dependencies. We also have to convert them into files names using the $classFileLookup.
			for ($i = 0, $len = count($fileData['extends']); $i < $len; ++$i) {
				// The check if it extends the Zarafa namespace is needed because we do not index other namespaces.
				if (str_starts_with($fileData['extends'][$i], 'Zarafa')) {
					if (isset($libFileLookup[$fileData['extends'][$i]])) {
						// The @extends is found in the library file.
						// No need to update the dependencies
					}
					elseif (isset($classFileLookup[$fileData['extends'][$i]])) {
						// The @extends is found as @class in another file
						// Convert the class dependency into a filename
						$dependencyFilename = $classFileLookup[$fileData['extends'][$i]];
						// Make sure the file does not depend on itself
						if ($dependencyFilename != $filename) {
							$fileDependencies[$filename]['depends'][] = $dependencyFilename;
						}
					}
					else {
						trigger_error('Unable to find @extends dependency "' . $fileData['extends'][$i] . '" for file "' . $filename . '"');
					}
				}
			}

			// Add the file dependencies that have been added by using #dependsFile in the file.
			for ($i = 0, $len = count($fileData['dependsFile']); $i < $len; ++$i) {
				$dependencyFilename = $fileData['dependsFile'][$i];
				// Check if the file exists to prevent non-existent dependencies
				if (isset($fileDataLookup[$dependencyFilename])) {
					// Make sure the file does not depend on itself
					if ($dependencyFilename != $filename) {
						$fileDependencies[$filename]['depends'][] = $dependencyFilename;
					}
				}
				else {
					trigger_error('Unable to find file #dependsFile dependency "' . $fileData['dependsFile'][$i] . '" for file "' . $filename . '"');
				}
			}
		}
		unset($fileData);

		$fileSequence = $this->generateDependencyBasedFileSeq($fileDependencies);

		return $fileSequence;
	}