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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\TestFramework\Utility;
/**
* Check if one or more functions are used in the file
*/
class FunctionDetector
{
/**
* Detect functions in given file
*
* return result in this format:
* [
* line_number => [
* function_name_1,
* function_name_2,
* function_name_3,
* ],
* line_number => [
* function_name_1,
* function_name_2,
* function_name_3,
* ],
* ]
*
* @param string $filePath
* @param string[] $functions
* @return array
*/
public function detect($filePath, $functions)
{
$result = [];
$regexp = $this->composeRegexp($functions);
if (!$regexp) {
return $result;
}
$fileContent = \Magento\TestFramework\Utility\ChangedFiles::getChangedContent($filePath);
$file = file($filePath);
return $fileContent
? $this->grepChangedContent($file, $regexp, $functions, $fileContent)
: $this->grepFile($file, $regexp);
}
/**
* Grep only changed content.
*
* @param array $file
* @param string $regexp
* @param string[] $functions
* @param string $fileContent
* @return array
*/
public function grepChangedContent(array $file, $regexp, $functions, $fileContent)
{
$result = [];
$matches = preg_grep($regexp, explode("\n", $fileContent));
if (!empty($matches)) {
foreach ($matches as $line) {
$actualFunctions = [];
foreach ($functions as $function) {
if (false !== strpos($line, $function)) {
$actualFunctions[] = $function;
}
}
$result[array_search($line . "\n", $file) + 1] = $actualFunctions;
}
}
return $result;
}
/**
* Grep File.
*
* @param array $file
* @param string $regexp
* @return array
*/
public function grepFile(array $file, $regexp)
{
$result = [];
array_unshift($file, '');
$lines = preg_grep($regexp, $file);
foreach ($lines as $lineNumber => $line) {
if (preg_match_all($regexp, $line, $matches)) {
$result[$lineNumber] = $matches[1];
}
}
return $result;
}
/**
* Compose regular expression
*
* @param array $functions
* @return string
*/
private function composeRegexp(array $functions)
{
if (empty($functions)) {
return '';
}
return '/(?<!function |->|::)\b(' . join('|', $functions) . ')\s*\(/i';
}
}