FullDiffList::parseCodeLine() - Code Metrics - Inspection of "Fix phpunit path" - sebastianfeldmann/git - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 751a3d...b7ca33 )

by Sebastian

created 2018-08-14 06:36 UTC

FullDiffList::parseCodeLine() A

↳ Parent: FullDiffList

Complexity

Conditions	2
Paths	2

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	11
ccs	6
cts	6
cp	1
rs	9.9
c	0
b	0
f	0
cc	2
nc	2
nop	1
crap	2

<?php
/**
 * This file is part of SebastianFeldmann\Git.
 *
 * (c) Sebastian Feldmann <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace SebastianFeldmann\Git\Command\Diff\Compare;

use SebastianFeldmann\Cli\Command\OutputFormatter;
use SebastianFeldmann\Git\Diff\Change;
use SebastianFeldmann\Git\Diff\File;
use SebastianFeldmann\Git\Diff\Line;

/**
 * FullDiffList output formatter.
 *
 * Returns a list of SebastianFeldmann\Git\Diff\File objects. Each containing
 * the list of changes that happened in that file.
 *
 * @author  Sebastian Feldmann <[email protected]>
 * @link    https://github.com/sebastianfeldmann/git
 * @since   Class available since Release 1.2.0
 */
class FullDiffList implements OutputFormatter
{
    /**
     * Available line types of git diff output.
     */
    const LINE_TYPE_START      = 'Start';
    const LINE_TYPE_HEADER     = 'Header';
    const LINE_TYPE_SIMILARITY = 'HeaderSimilarity';
    const LINE_TYPE_OP         = 'HeaderOp';
    const LINE_TYPE_INDEX      = 'HeaderIndex';
    const LINE_TYPE_FORMAT     = 'HeaderFormat';
    const LINE_TYPE_POSITION   = 'ChangePosition';
    const LINE_TYPE_CODE       = 'ChangeCode';

    /**
     * Search and parse strategy.
     *
     * Define possible follow up lines for each line type to minimize search effort.
     *
     * @var array
     */
    private static $lineTypesToCheck = [
        self::LINE_TYPE_START => [
            self::LINE_TYPE_HEADER
        ],
        self::LINE_TYPE_HEADER => [
            self::LINE_TYPE_SIMILARITY,
            self::LINE_TYPE_OP,
            self::LINE_TYPE_INDEX,
        ],
        self::LINE_TYPE_SIMILARITY => [
            self::LINE_TYPE_OP,
            self::LINE_TYPE_INDEX,
        ],
        self::LINE_TYPE_OP => [
            self::LINE_TYPE_OP,
            self::LINE_TYPE_INDEX
        ],
        self::LINE_TYPE_INDEX => [
            self::LINE_TYPE_FORMAT
        ],
        self::LINE_TYPE_FORMAT => [
            self::LINE_TYPE_FORMAT,
            self::LINE_TYPE_POSITION
        ],
        self::LINE_TYPE_POSITION => [
            self::LINE_TYPE_CODE
        ],
        self::LINE_TYPE_CODE => [
            self::LINE_TYPE_HEADER,
            self::LINE_TYPE_POSITION,
            self::LINE_TYPE_CODE
        ]
    ];

    /**
     * Maps git diff output to file operations.
     *
     * @var array
     */
    private static $opsMap = [
        'old'     => File::OP_MODIFIED,
        'new'     => File::OP_CREATED,
        'deleted' => File::OP_DELETED,
        'rename'  => File::OP_RENAMED,
        'copy'    => File::OP_COPIED,
    ];

    /**
     * List of diff File objects.
     *
     * @var \SebastianFeldmann\Git\Diff\File[]
     */
    private $files = [];

    /**
     * The currently processed file.
     *
     * @var \SebastianFeldmann\Git\Diff\File
     */
    private $currentFile;

    /**
     * The file name of the currently processed file.
     *
     * @var string
     */
    private $currentFileName;

    /**
     * The change position of the currently processed file.
     *
     * @var string
     */
    private $currentPosition;

    /**
     * The operation of the currently processed file.
     *
     * @var string
     */
    private $currentOperation;

    /**
     * List of collected changes.
     *
     * @var \SebastianFeldmann\Git\Diff\Change[]
     */
    private $currentChanges = [];

    /**
     * Format the output.
     *
     * @param  array $output
     * @return iterable
     */
    public function format(array $output)
    {
        $previousLineType = self::LINE_TYPE_START;
        // for each line of the output
        for ($i = 0, $length = count($output); $i < $length; $i++) {
            $line = $output[$i];
            // depending on the previous line type
            // check for all possible following line types and handle it
            foreach (self::$lineTypesToCheck[$previousLineType] as $typeToCheck) {
                $call = 'is' . $typeToCheck . 'Line';
                // if the line type could be matched
                if ($this->$call($line)) {
                    // remember the line type
                    $previousLineType = $typeToCheck;
                    break;
                }
            }
        }
        $this->appendCollectedFileAndChanges();

        return $this->files;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    /**
     * Is the given line a diff header line.
     *
     * diff --git a/some/file b/some/file
     *
     * @param  string $line
     * @return bool
     */
    private function isHeaderLine(string $line): bool

    {
        $matches = [];
        if (preg_match('#^diff --git [a|b|c|i|w|o]/(.*) [a|b|c|i|w|o]/(.*)#', $line, $matches)) {
            $this->appendCollectedFileAndChanges();
            $this->currentOperation = File::OP_MODIFIED;
            $this->currentFileName  = $matches[2];
            return true;
        }
        return false;
    }

    /**
     * Is the given line a diff header similarity line.
     *
     * similarity index 96%
     *
     * @param  string $line
     * @return bool
     */
    private function isHeaderSimilarityLine(string $line): bool
    {
        $matches = [];
        return (bool)preg_match('#^(similarity|dissimilarity) index [0-9]+%$#', $line, $matches);
    }

    /**
     * Is the given line a diff header operation line.
     *
     * new file mode 100644
     * delete file
     * rename from some/file
     * rename to some/other/file
     *
     * @param  string $line
     * @return bool
     */
    private function isHeaderOpLine(string $line): bool
    {
        $matches = [];
        if (preg_match('#^(old|new|deleted|rename|copy) (file mode|from|to) (.+)#', $line, $matches)) {
            $this->currentOperation = self::$opsMap[$matches[1]];
            return true;
        }
        return false;
    }

    /**
     * Is the given line a diff header index line.
     *
     * index f7fc435..7b5bd26 100644
     *
     * @param  string $line
     * @return bool
     */
    private function isHeaderIndexLine(string $line): bool

    {
        $matches = [];
        if (preg_match('#^index\s([a-z0-9]+)\.\.([a-z0-9]+)(.*)$#i', $line, $matches)) {
            $this->currentFile = new File($this->currentFileName, $this->currentOperation);
            return true;
        }
        return false;
    }

    /**
     * Is the given line a diff header format line.
     *
     * --- a/some/file
     * +++ b/some/file
     *
     * @param  string $line
     * @return bool
     */
    private function isHeaderFormatLine(string $line): bool
    {
        $matches = [];
        return (bool)preg_match('#^[\-\+]{3} [a|b|c|i|w|o]?/.*#', $line, $matches);
    }

    /**
     * Is the given line a diff change position line.
     *
     * @@ -4,3 +4,10 @@ some file hint
     *
     * @param  string $line
     * @return bool
     */
    private function isChangePositionLine(string $line): bool
    {
        $matches = [];
        if (preg_match('#^@@ (\-[0-9,]{3,} \+[0-9,]{3,}) @@ ?(.*)$#', $line, $matches)) {
            $this->currentPosition                        = $matches[1];
            $this->currentChanges[$this->currentPosition] = new Change($matches[1], $matches[2]);
            return true;
        }
        return false;
    }

    /**
     * In our case we treat every line as code line if no other line type matched before.
     *
     * @param  string $line
     * @return bool
     */
    private function isChangeCodeLine(string $line): bool
    {
        $line = $this->parseCodeLine($line);
        $this->currentChanges[$this->currentPosition]->addLine($line);
        return true;
    }

    /**
     * Determines the line type and cleans up the line.
     *
     * @param  string $line
     * @return \SebastianFeldmann\Git\Diff\Line
     */
    private function parseCodeLine(string $line): Line
    {
        if (strlen($line) == 0) {
            return new Line(Line::EXISTED, '');
        }

        $firstChar = $line[0];
        $cleanLine = rtrim(substr($line, 1));

        return new Line(Line::$opsMap[$firstChar], $cleanLine);
    }

    /**
     * Add all collected changes to its file.
     */
    private function appendCollectedFileAndChanges()
    {
        if (!empty($this->currentFile)) {
            foreach ($this->currentChanges as $change) {
                $this->currentFile->addChange($change);
            }
            $this->files[] = $this->currentFile;
        }
        $this->currentChanges = [];
    }
}


1			<?php
2			/**
3			* This file is part of SebastianFeldmann\Git.
4			*
5			* (c) Sebastian Feldmann <[email protected]>
6			*
7			* For the full copyright and license information, please view the LICENSE
8			* file that was distributed with this source code.
9			*/
10			namespace SebastianFeldmann\Git\Command\Diff\Compare;
11
12			use SebastianFeldmann\Cli\Command\OutputFormatter;
13			use SebastianFeldmann\Git\Diff\Change;
14			use SebastianFeldmann\Git\Diff\File;
15			use SebastianFeldmann\Git\Diff\Line;
16
17			/**
18			* FullDiffList output formatter.
19			*
20			* Returns a list of SebastianFeldmann\Git\Diff\File objects. Each containing
21			* the list of changes that happened in that file.
22			*
23			* @author Sebastian Feldmann <[email protected]>
24			* @link https://github.com/sebastianfeldmann/git
25			* @since Class available since Release 1.2.0
26			*/
27			class FullDiffList implements OutputFormatter
28			{
29			/**
30			* Available line types of git diff output.
31			*/
32			const LINE_TYPE_START = 'Start';
33			const LINE_TYPE_HEADER = 'Header';
34			const LINE_TYPE_SIMILARITY = 'HeaderSimilarity';
35			const LINE_TYPE_OP = 'HeaderOp';
36			const LINE_TYPE_INDEX = 'HeaderIndex';
37			const LINE_TYPE_FORMAT = 'HeaderFormat';
38			const LINE_TYPE_POSITION = 'ChangePosition';
39			const LINE_TYPE_CODE = 'ChangeCode';
40
41			/**
42			* Search and parse strategy.
43			*
44			* Define possible follow up lines for each line type to minimize search effort.
45			*
46			* @var array
47			*/
48			private static $lineTypesToCheck = [
49			self::LINE_TYPE_START => [
50			self::LINE_TYPE_HEADER
51			],
52			self::LINE_TYPE_HEADER => [
53			self::LINE_TYPE_SIMILARITY,
54			self::LINE_TYPE_OP,
55			self::LINE_TYPE_INDEX,
56			],
57			self::LINE_TYPE_SIMILARITY => [
58			self::LINE_TYPE_OP,
59			self::LINE_TYPE_INDEX,
60			],
61			self::LINE_TYPE_OP => [
62			self::LINE_TYPE_OP,
63			self::LINE_TYPE_INDEX
64			],
65			self::LINE_TYPE_INDEX => [
66			self::LINE_TYPE_FORMAT
67			],
68			self::LINE_TYPE_FORMAT => [
69			self::LINE_TYPE_FORMAT,
70			self::LINE_TYPE_POSITION
71			],
72			self::LINE_TYPE_POSITION => [
73			self::LINE_TYPE_CODE
74			],
75			self::LINE_TYPE_CODE => [
76			self::LINE_TYPE_HEADER,
77			self::LINE_TYPE_POSITION,
78			self::LINE_TYPE_CODE
79			]
80			];
81
82			/**
83			* Maps git diff output to file operations.
84			*
85			* @var array
86			*/
87			private static $opsMap = [
88			'old' => File::OP_MODIFIED,
89			'new' => File::OP_CREATED,
90			'deleted' => File::OP_DELETED,
91			'rename' => File::OP_RENAMED,
92			'copy' => File::OP_COPIED,
93			];
94
95			/**
96			* List of diff File objects.
97			*
98			* @var \SebastianFeldmann\Git\Diff\File[]
99			*/
100			private $files = [];
101
102			/**
103			* The currently processed file.
104			*
105			* @var \SebastianFeldmann\Git\Diff\File
106			*/
107			private $currentFile;
108
109			/**
110			* The file name of the currently processed file.
111			*
112			* @var string
113			*/
114			private $currentFileName;
115
116			/**
117			* The change position of the currently processed file.
118			*
119			* @var string
120			*/
121			private $currentPosition;
122
123			/**
124			* The operation of the currently processed file.
125			*
126			* @var string
127			*/
128			private $currentOperation;
129
130			/**
131			* List of collected changes.
132			*
133			* @var \SebastianFeldmann\Git\Diff\Change[]
134			*/
135			private $currentChanges = [];
136
137			/**
138			* Format the output.
139			*
140			* @param array $output
141			* @return iterable
142			*/
143	7		public function format(array $output)
144			{
145	7		$previousLineType = self::LINE_TYPE_START;
146			// for each line of the output
147	7		for ($i = 0, $length = count($output); $i < $length; $i++) {
148	7		$line = $output[$i];
149			// depending on the previous line type
150			// check for all possible following line types and handle it
151	7		foreach (self::$lineTypesToCheck[$previousLineType] as $typeToCheck) {
152	7		$call = 'is' . $typeToCheck . 'Line';
153			// if the line type could be matched
154	7		if ($this->$call($line)) {
155			// remember the line type
156	7		$previousLineType = $typeToCheck;
157	7		break;
158			}
159			}
160			}
161	7		$this->appendCollectedFileAndChanges();
162
163	7		return $this->files;
			0 ignored issues – show Bug Best Practice introduced 2018-08-14 06:54 UTC by Report Bug Copy Issue Report The return type of `return $this->files;` (`SebastianFeldmann\Git\Diff\File[]`) is incompatible with the return type declared by the interface `SebastianFeldmann\Cli\Co...OutputFormatter::format` of type `SebastianFeldmann\Cli\Command\iterable`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
164			}
165
166			/**
167			* Is the given line a diff header line.
168			*
169			* diff --git a/some/file b/some/file
170			*
171			* @param string $line
172			* @return bool
173			*/
174	7	View Code Duplication	private function isHeaderLine(string $line): bool
			0 ignored issues – show Duplication introduced 2018-08-14 06:54 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
175			{
176	7		$matches = [];
177	7		if (preg_match('#^diff --git [a\|b\|c\|i\|w\|o]/(.) [a\|b\|c\|i\|w\|o]/(.)#', $line, $matches)) {
178	7		$this->appendCollectedFileAndChanges();
179	7		$this->currentOperation = File::OP_MODIFIED;
180	7		$this->currentFileName = $matches[2];
181	7		return true;
182			}
183	7		return false;
184			}
185
186			/**
187			* Is the given line a diff header similarity line.
188			*
189			* similarity index 96%
190			*
191			* @param string $line
192			* @return bool
193			*/
194	7		private function isHeaderSimilarityLine(string $line): bool
195			{
196	7		$matches = [];
197	7		return (bool)preg_match('#^(similarity\|dissimilarity) index [0-9]+%$#', $line, $matches);
198			}
199
200			/**
201			* Is the given line a diff header operation line.
202			*
203			* new file mode 100644
204			* delete file
205			* rename from some/file
206			* rename to some/other/file
207			*
208			* @param string $line
209			* @return bool
210			*/
211	7		private function isHeaderOpLine(string $line): bool
212			{
213	7		$matches = [];
214	7		if (preg_match('#^(old\|new\|deleted\|rename\|copy) (file mode\|from\|to) (.+)#', $line, $matches)) {
215	5		$this->currentOperation = self::$opsMap[$matches[1]];
216	5		return true;
217			}
218	7		return false;
219			}
220
221			/**
222			* Is the given line a diff header index line.
223			*
224			* index f7fc435..7b5bd26 100644
225			*
226			* @param string $line
227			* @return bool
228			*/
229	7	View Code Duplication	private function isHeaderIndexLine(string $line): bool
			0 ignored issues – show Duplication introduced 2018-08-14 06:54 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
230			{
231	7		$matches = [];
232	7		if (preg_match('#^index\s([a-z0-9]+)\.\.([a-z0-9]+)(.*)$#i', $line, $matches)) {
233	7		$this->currentFile = new File($this->currentFileName, $this->currentOperation);
234	7		return true;
235			}
236	1		return false;
237			}
238
239			/**
240			* Is the given line a diff header format line.
241			*
242			* --- a/some/file
243			* +++ b/some/file
244			*
245			* @param string $line
246			* @return bool
247			*/
248	7		private function isHeaderFormatLine(string $line): bool
249			{
250	7		$matches = [];
251	7		return (bool)preg_match('#^[\-\+]{3} [a\|b\|c\|i\|w\|o]?/.*#', $line, $matches);
252			}
253
254			/**
255			* Is the given line a diff change position line.
256			*
257			* @@ -4,3 +4,10 @@ some file hint
258			*
259			* @param string $line
260			* @return bool
261			*/
262	7		private function isChangePositionLine(string $line): bool
263			{
264	7		$matches = [];
265	7		if (preg_match('#^@@ (\-[0-9,]{3,} \+[0-9,]{3,}) @@ ?(.*)$#', $line, $matches)) {
266	7		$this->currentPosition = $matches[1];
267	7		$this->currentChanges[$this->currentPosition] = new Change($matches[1], $matches[2]);
268	7		return true;
269			}
270	7		return false;
271			}
272
273			/**
274			* In our case we treat every line as code line if no other line type matched before.
275			*
276			* @param string $line
277			* @return bool
278			*/
279	7		private function isChangeCodeLine(string $line): bool
280			{
281	7		$line = $this->parseCodeLine($line);
282	7		$this->currentChanges[$this->currentPosition]->addLine($line);
283	7		return true;
284			}
285
286			/**
287			* Determines the line type and cleans up the line.
288			*
289			* @param string $line
290			* @return \SebastianFeldmann\Git\Diff\Line
291			*/
292	7		private function parseCodeLine(string $line): Line
293			{
294	7		if (strlen($line) == 0) {
295	1		return new Line(Line::EXISTED, '');
296			}
297
298	7		$firstChar = $line[0];
299	7		$cleanLine = rtrim(substr($line, 1));
300
301	7		return new Line(Line::$opsMap[$firstChar], $cleanLine);
302			}
303
304			/**
305			* Add all collected changes to its file.
306			*/
307	7		private function appendCollectedFileAndChanges()
308			{
309	7		if (!empty($this->currentFile)) {
310	7		foreach ($this->currentChanges as $change) {
311	7		$this->currentFile->addChange($change);
312			}
313	7		$this->files[] = $this->currentFile;
314			}
315	7		$this->currentChanges = [];
316	7		}
317			}
318

sebastianfeldmann / git

Push — master ( 751a3d...b7ca33 )

FullDiffList::parseCodeLine() A

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