test-coverage.php ➔ get_path_transformation_map() - Code Metrics - Inspection of "Merge branch 'master' into update/phpcs-carousel" - Automattic/jetpack - Measure and Improve Code Quality continuously with Scrutinizer

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created 2021-03-09 22:53 UTC

test-coverage.php ➔ get_path_transformation_map() C

↳ Parent: Project

Complexity

Conditions	11
Paths	50

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	11
nc	50
nop	1
dl	0
loc	70
rs	6.5077
c	0
b	0
f	0

How to fix Long Method Complexity

<?php
/**
 * A utility for transforming a raw code coverage
 * report into a clover.xml file for consumption.
 *
 * @package automattic/jetpack-autoloader
 */

use SebastianBergmann\CodeCoverage\Report\Clover;
use SebastianBergmann\CodeCoverage\Version;

// phpcs:disabled WordPress.Security.EscapeOutput.OutputNotEscaped

define( 'ROOT_DIR', dirname( dirname( dirname( __DIR__ ) ) ) );

require_once ROOT_DIR . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';

/**
 * Returns the path to the clover.xml output file.
 *
 * @return string The path to the output file.
 */
function get_output_file() {
	global $argc;
	global $argv;

	if ( $argc < 2 ) {
		echo "Usage: test-coverage [clover.xml file]\n";
		exit( -1 );
	}

	return $argv[1];
}

/**
 * Attempts to load the report from the tmp file we should have generated.
 *
 * @return SebastianBergmann\CodeCoverage\CodeCoverage The unserialized code coverage object.
 */
function load_report() {
	$coverage_report = implode( DIRECTORY_SEPARATOR, array( ROOT_DIR, 'tests', 'php', 'tmp', 'coverage-report.php' ) );
	if ( ! file_exists( $coverage_report ) ) {
		echo "There is no coverage report to process.\n";
		exit( -1 );
	}

	return require_once $coverage_report;
}

/**
 * Evaluates the version of sebastianbergmann/php-code-coverage that we've generated the coverage report using.
 *
 * @return string The version for the code coverage package.
 */
function get_coverage_version() {
	return Version::id();
}

/**
 * Counts the number of lines in a file before the `class` keyword.
 *
 * @param string $file The file to check.
 * @return int|null The number of lines or null if there is no class keyword.
 */
function count_lines_before_class_keyword( $file ) {
	// Find the line that the `class` keyword occurs on so that we can use it to calculate an offset from the header.
	$content = file_get_contents( $file ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents

	// Find the class keyword and capture the number of characters in the string before this point.
	if ( 0 === preg_match_all( '/^class /m', $content, $matches, PREG_OFFSET_CAPTURE ) ) {
		return null;
	}

	// Count the line endings leading up to the `class` keyword.
	$newlines = substr_count( $content, "\n", 0, $matches[0][0][1] );
	if ( $newlines > 0 ) {
		return $newlines + 1;
	}

	return null;
}

/**
 * Creates a map for converting file paths to src paths.
 *
 * @param string[] $report_file_paths An array containing all of the paths for the report.
 * @return array A map describing how to transform built files into src coverage.
 */
function get_path_transformation_map( $report_file_paths ) {
	// We're going to create a map describing how to transform files to src files.
	// We're also going to store any metadata needed to perform the merge safetly.
	$transformation_map = array();

	// Scan the src directory so that we can create the map to convert between files.
	$raw_src_files = scandir( ROOT_DIR . DIRECTORY_SEPARATOR . 'src' );
	$src_file_map  = array();
	foreach ( $raw_src_files as $file ) {
		// Only PHP files will be copied.
		if ( substr( $file, -4 ) !== '.php' ) {
			continue;
		}

		$file = ROOT_DIR . DIRECTORY_SEPARATOR . 'src' . DIRECTORY_SEPARATOR . $file;
		if ( ! file_exists( $file ) ) {
			continue;
		}

		// We need to use the class keyword to address the line offset from injecting the header.
		$class_line = count_lines_before_class_keyword( $file );
		if ( null === $class_line ) {
			// The autoloader only has class files and so this is fine.
			continue;
		}

		$src_file_map[ $file ] = array(
			'file'       => $file,
			'class_line' => $class_line,
		);
	}

	// Create a map describing the file transformations.
	foreach ( $report_file_paths as $report_file_path ) {
		// We will use the class line from the report file to calculate the offset from the src file to apply to coverage lines.
		$class_line = count_lines_before_class_keyword( $report_file_path );
		if ( ! isset( $class_line ) ) {
			continue;
		}

		// Attempt to find the original file.
		// Note: This does not support nested directories!
		$src_file_path = null;
		foreach ( $src_file_map as $src_file ) {
			// We don't need to perform any transformations if the file path is the same.
			if ( $src_file['file'] === $report_file_path ) {
				continue;
			}

			if ( basename( $src_file['file'] ) === basename( $report_file_path ) ) {
				$src_file_path = $src_file['file'];
				break;
			}
		}
		if ( ! $src_file_path ) {
			continue;
		}

		// We can finally calculate the line offset since we have the class line for both.
		$line_offset = $class_line - $src_file_map[ $src_file_path ]['class_line'];

		// Record the file in the transformation map.
		$transformation_map[ $report_file_path ] = array(
			'src'         => $src_file_path,
			'line_offset' => $line_offset,
		);
	}

	return $transformation_map;
}

/**
 * Processes a v9 CodeCoverage report.
 *
 * @param SebastianBergmann\CodeCoverage\CodeCoverage $report The report to process.
 * @return SebastianBergmann\CodeCoverage\CodeCoverage The processed report.
 */
function process_coverage_9( $report ) {
	$data = $report->getData( true );

	// We're going to merge the line coverage from compiled files into the src files.
	$line_coverage   = $data->lineCoverage();
	$transformations = get_path_transformation_map( array_keys( $line_coverage ) );

	$removed_files = array();
	foreach ( $line_coverage as $file => $lines ) {
		if ( ! isset( $transformations[ $file ] ) ) {
			continue;
		}

		// Prepare the transformations we are going to make.
		$src_file    = $transformations[ $file ]['src'];
		$line_offset = $transformations[ $file ]['line_offset'];

		// Create a new line coverage mapped to the src file.
		$new_coverage = array();
		foreach ( $lines as $line => $coverage ) {
			$new_coverage[ $src_file ][ $line - $line_offset ] = $coverage;
		}

		// Merge the coverage since multiple compiled files may map to a single src file.
		$merge = new SebastianBergmann\CodeCoverage\ProcessedCodeCoverageData();
		$merge->setLineCoverage( $new_coverage );
		$data->merge( $merge );

		// Mark the file for removal from the original coverage.
		$removed_files[] = $file;
	}

	// Remove all of the files that we've transformed from the coverage.
	$line_coverage = $data->lineCoverage();
	foreach ( $removed_files as $file ) {
		// Make sure the uncovered file does not show up in the report.
		$report->filter()->excludeFile( $file );
		unset( $line_coverage[ $file ] );
	}
	$data->setLineCoverage( $line_coverage );

	return $report;
}

/**
 * Processes the code coverage report and outputs a clover.xml file.
 */
function process_coverage() {
	echo "Aggregating compiled coverage into unified code coverage report\n";

	// We're going to transform the code coverage object into a Clover XML report.
	$output_file = get_output_file();

	// Since there is no backwards compatibility guarantee in place for the code coverage
	// object we need to handle it according to each major version independently.
	$coverage_version = get_coverage_version();
	$major_version    = substr( $coverage_version, 0, strpos( $coverage_version, '.' ) );

	$function = 'process_coverage_' . $major_version;
	if ( ! function_exists( $function ) ) {
		echo "No handler defined for major version $major_version\n";
		die( -1 );
	}

	// We can finally load the report that we're wanting to process.
	$report = load_report();

	// Process the report using the handler.
	$report = call_user_func( $function, $report );

	// Generate the XML file for the report.
	$clover = new Clover();
	$clover->process( $report, $output_file );
	echo "Generated code coverage report in Clover format\n";
}

// Process the coverage report into the new output.
process_coverage();


1			<?php
2			/**
3			* A utility for transforming a raw code coverage
4			* report into a clover.xml file for consumption.
5			*
6			* @package automattic/jetpack-autoloader
7			*/
8
9			use SebastianBergmann\CodeCoverage\Report\Clover;
10			use SebastianBergmann\CodeCoverage\Version;
11
12			// phpcs:disabled WordPress.Security.EscapeOutput.OutputNotEscaped
13
14			define( 'ROOT_DIR', dirname( dirname( dirname( __DIR__ ) ) ) );
15
16			require_once ROOT_DIR . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';
17
18			/**
19			* Returns the path to the clover.xml output file.
20			*
21			* @return string The path to the output file.
22			*/
23			function get_output_file() {
24			global $argc;
25			global $argv;
26
27			if ( $argc < 2 ) {
28			echo "Usage: test-coverage [clover.xml file]\n";
29			exit( -1 );
30			}
31
32			return $argv[1];
33			}
34
35			/**
36			* Attempts to load the report from the tmp file we should have generated.
37			*
38			* @return SebastianBergmann\CodeCoverage\CodeCoverage The unserialized code coverage object.
39			*/
40			function load_report() {
41			$coverage_report = implode( DIRECTORY_SEPARATOR, array( ROOT_DIR, 'tests', 'php', 'tmp', 'coverage-report.php' ) );
42			if ( ! file_exists( $coverage_report ) ) {
43			echo "There is no coverage report to process.\n";
44			exit( -1 );
45			}
46
47			return require_once $coverage_report;
48			}
49
50			/**
51			* Evaluates the version of sebastianbergmann/php-code-coverage that we've generated the coverage report using.
52			*
53			* @return string The version for the code coverage package.
54			*/
55			function get_coverage_version() {
56			return Version::id();
57			}
58
59			/**
60			* Counts the number of lines in a file before the `class` keyword.
61			*
62			* @param string $file The file to check.
63			* @return int\|null The number of lines or null if there is no class keyword.
64			*/
65			function count_lines_before_class_keyword( $file ) {
66			// Find the line that the `class` keyword occurs on so that we can use it to calculate an offset from the header.
67			$content = file_get_contents( $file ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents
68
69			// Find the class keyword and capture the number of characters in the string before this point.
70			if ( 0 === preg_match_all( '/^class /m', $content, $matches, PREG_OFFSET_CAPTURE ) ) {
71			return null;
72			}
73
74			// Count the line endings leading up to the `class` keyword.
75			$newlines = substr_count( $content, "\n", 0, $matches[0][0][1] );
76			if ( $newlines > 0 ) {
77			return $newlines + 1;
78			}
79
80			return null;
81			}
82
83			/**
84			* Creates a map for converting file paths to src paths.
85			*
86			* @param string[] $report_file_paths An array containing all of the paths for the report.
87			* @return array A map describing how to transform built files into src coverage.
88			*/
89			function get_path_transformation_map( $report_file_paths ) {
90			// We're going to create a map describing how to transform files to src files.
91			// We're also going to store any metadata needed to perform the merge safetly.
92			$transformation_map = array();
93
94			// Scan the src directory so that we can create the map to convert between files.
95			$raw_src_files = scandir( ROOT_DIR . DIRECTORY_SEPARATOR . 'src' );
96			$src_file_map = array();
97			foreach ( $raw_src_files as $file ) {
98			// Only PHP files will be copied.
99			if ( substr( $file, -4 ) !== '.php' ) {
100			continue;
101			}
102
103			$file = ROOT_DIR . DIRECTORY_SEPARATOR . 'src' . DIRECTORY_SEPARATOR . $file;
104			if ( ! file_exists( $file ) ) {
105			continue;
106			}
107
108			// We need to use the class keyword to address the line offset from injecting the header.
109			$class_line = count_lines_before_class_keyword( $file );
110			if ( null === $class_line ) {
111			// The autoloader only has class files and so this is fine.
112			continue;
113			}
114
115			$src_file_map[ $file ] = array(
116			'file' => $file,
117			'class_line' => $class_line,
118			);
119			}
120
121			// Create a map describing the file transformations.
122			foreach ( $report_file_paths as $report_file_path ) {
123			// We will use the class line from the report file to calculate the offset from the src file to apply to coverage lines.
124			$class_line = count_lines_before_class_keyword( $report_file_path );
125			if ( ! isset( $class_line ) ) {
126			continue;
127			}
128
129			// Attempt to find the original file.
130			// Note: This does not support nested directories!
131			$src_file_path = null;
132			foreach ( $src_file_map as $src_file ) {
133			// We don't need to perform any transformations if the file path is the same.
134			if ( $src_file['file'] === $report_file_path ) {
135			continue;
136			}
137
138			if ( basename( $src_file['file'] ) === basename( $report_file_path ) ) {
139			$src_file_path = $src_file['file'];
140			break;
141			}
142			}
143			if ( ! $src_file_path ) {
144			continue;
145			}
146
147			// We can finally calculate the line offset since we have the class line for both.
148			$line_offset = $class_line - $src_file_map[ $src_file_path ]['class_line'];
149
150			// Record the file in the transformation map.
151			$transformation_map[ $report_file_path ] = array(
152			'src' => $src_file_path,
153			'line_offset' => $line_offset,
154			);
155			}
156
157			return $transformation_map;
158			}
159
160			/**
161			* Processes a v9 CodeCoverage report.
162			*
163			* @param SebastianBergmann\CodeCoverage\CodeCoverage $report The report to process.
164			* @return SebastianBergmann\CodeCoverage\CodeCoverage The processed report.
165			*/
166			function process_coverage_9( $report ) {
167			$data = $report->getData( true );
168
169			// We're going to merge the line coverage from compiled files into the src files.
170			$line_coverage = $data->lineCoverage();
171			$transformations = get_path_transformation_map( array_keys( $line_coverage ) );
172
173			$removed_files = array();
174			foreach ( $line_coverage as $file => $lines ) {
175			if ( ! isset( $transformations[ $file ] ) ) {
176			continue;
177			}
178
179			// Prepare the transformations we are going to make.
180			$src_file = $transformations[ $file ]['src'];
181			$line_offset = $transformations[ $file ]['line_offset'];
182
183			// Create a new line coverage mapped to the src file.
184			$new_coverage = array();
185			foreach ( $lines as $line => $coverage ) {
186			$new_coverage[ $src_file ][ $line - $line_offset ] = $coverage;
187			}
188
189			// Merge the coverage since multiple compiled files may map to a single src file.
190			$merge = new SebastianBergmann\CodeCoverage\ProcessedCodeCoverageData();
191			$merge->setLineCoverage( $new_coverage );
192			$data->merge( $merge );
193
194			// Mark the file for removal from the original coverage.
195			$removed_files[] = $file;
196			}
197
198			// Remove all of the files that we've transformed from the coverage.
199			$line_coverage = $data->lineCoverage();
200			foreach ( $removed_files as $file ) {
201			// Make sure the uncovered file does not show up in the report.
202			$report->filter()->excludeFile( $file );
203			unset( $line_coverage[ $file ] );
204			}
205			$data->setLineCoverage( $line_coverage );
206
207			return $report;
208			}
209
210			/**
211			* Processes the code coverage report and outputs a clover.xml file.
212			*/
213			function process_coverage() {
214			echo "Aggregating compiled coverage into unified code coverage report\n";
215
216			// We're going to transform the code coverage object into a Clover XML report.
217			$output_file = get_output_file();
218
219			// Since there is no backwards compatibility guarantee in place for the code coverage
220			// object we need to handle it according to each major version independently.
221			$coverage_version = get_coverage_version();
222			$major_version = substr( $coverage_version, 0, strpos( $coverage_version, '.' ) );
223
224			$function = 'process_coverage_' . $major_version;
225			if ( ! function_exists( $function ) ) {
226			echo "No handler defined for major version $major_version\n";
227			die( -1 );
228			}
229
230			// We can finally load the report that we're wanting to process.
231			$report = load_report();
232
233			// Process the report using the handler.
234			$report = call_user_func( $function, $report );
235
236			// Generate the XML file for the report.
237			$clover = new Clover();
238			$clover->process( $report, $output_file );
239			echo "Generated code coverage report in Clover format\n";
240			}
241
242			// Process the coverage report into the new output.
243			process_coverage();
244

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Push — update/phpcs-carousel ( 656e8c...b232d2 )

test-coverage.php ➔ get_path_transformation_map() C

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