FileDirectory::isThis() - Code Metrics - indy2kro/php-iso - Measure and Improve Code Quality continuously with Scrutinizer

FileDirectory::isThis() A
last analyzed 2025-05-17 06:32 UTC

↳ Parent: FileDirectory

Complexity

Conditions	2
Paths	2

Size

Total Lines	7
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	2.0625

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	3
c	1
b	0
f	0
dl	0
loc	7
ccs	3
cts	4
cp	0.75
rs	10
cc	2
nc	2
nop	0
crap	2.0625

<?php

declare(strict_types=1);

namespace PhpIso;

use Carbon\Carbon;
use PhpIso\Util\Buffer;
use PhpIso\Util\IsoDate;

class FileDirectory
{
    /**
     * If set to ZERO, shall mean that the existence of the file shall be made known to the
     * user upon an inquiry by the user.
     * If set to ONE, shall mean that the existence of the file need not be made known to
     * the user.
     */
    public const FILE_MODE_HIDDEN = 0x01;

    /**
     * If set to ZERO, shall mean that the Directory Record does not identify a directory.
     * If set to ONE, shall mean that the Directory Record identifies a directory.
     */
    public const FILE_MODE_DIRECTORY = 0x02;

    /**
     * If set to ZERO, shall mean that the file is not an Associated File.
     * If set to ONE, shall mean that the file is an Associated File.
     */
    public const FILE_MODE_ASSOCIATED = 0x04;

    /**
     * If set to ZERO, shall mean that the structure of the information in the file is not
     * specified by the Record Format field of any associated Extended Attribute Record (see 9.5.8).
     * If set to ONE, shall mean that the structure of the information in the file has a
     * record format specified by a number other than zero in the Record Format Field of
     * the Extended Attribute Record (see 9.5.8).
     */
    public const FILE_MODE_RECORD = 0x08;
    /**
     * If set to ZERO, shall mean that
     * - an Owner Identification and a Group Identification are not specified for the file (see 9.5.1 and 9.5.2);
     * - any user may read or execute the file (see 9.5.3). If set to ONE, shall mean that
     * - an Owner Identification and a Group Identification are specified for the file (see 9.5.1 and 9.5.2);
     * - at least one of the even-numbered bits or bit 0 in the Permissions field of the associated Extended Attribute Record is set to ONE (see 9.5.3).
     */
    public const FILE_MODE_PROTECTED = 0x10;
    /**
     * If set to ZERO, shall mean that this is the final Directory Record for the file.
     * If set to ONE, shall mean that this is not the final Directory Record for the file.
     */
    public const FILE_MODE_MULTI_EXTENT = 0x80;

    /**
     * The length of the "Directory Record"
     */
    public int $dirRecLength = 0;

    /**
     * The length of the "Directory Record" extended attribute record
     */
    public int $extendedAttrRecordLength;

    /**
     * Location of extents
     */
    public int $location;

    /**
     * The length of the data (the content for a file, the "child file & folder for a directory...
     */
    public int $dataLength;

    /**
     * The recording date
     */
    public ?Carbon $recordingDate = null;

    /**
     * File (or folder) flags.
     */
    public int $flags;

    /**
     * The File Unit Size
     */
    public int $fileUnitSize;

    /**
     * The Interleave Gap Size
     */
    public int $interleaveGapSize;

    /**
     * The ordinal number of the volume in the Volume Set
     */
    public int $volumeSeqNum;

    /**
     * The length of the file identifier
     */
    public int $fileIdLength;

    /**
     * The file identifier
     */
    public string $fileId;

    public int $jolietLevel = 0;

    /**
     * Load the "Directory Record" from buffer
     *
     * @param array<int, int> $buffer
     */
    public function init(array &$buffer, int &$offset, bool $supplementary = false): bool
    {
        $tmp = $offset;

        $this->dirRecLength = $buffer[$tmp];
        $tmp++;
        if ($this->dirRecLength === 0) {
            return false;
        }

        $this->extendedAttrRecordLength = $buffer[$tmp];
        $tmp++;

        $this->location = Buffer::readBBO($buffer, 8, $tmp);
        $this->dataLength = Buffer::readBBO($buffer, 8, $tmp);

        $this->recordingDate = IsoDate::init7($buffer, $tmp);

        $this->flags = $buffer[$tmp];
        $tmp++;
        $this->fileUnitSize = $buffer[$tmp];
        $tmp++;
        $this->interleaveGapSize = $buffer[$tmp];
        $tmp++;

        $this->volumeSeqNum = Buffer::readBBO($buffer, 4, $tmp);

        $this->fileIdLength = $buffer[$tmp];
        $tmp++;

        if ($this->fileIdLength === 1 && $buffer[$tmp] === 0) {
            $this->fileId = '.';
            $tmp++;
        } elseif ($this->fileIdLength === 1 && $buffer[$tmp] === 1) {
            $this->fileId = '..';
            $tmp++;
        } else {
            if ($this->jolietLevel === 3) {
                $this->fileId = Buffer::readDString($buffer, $this->fileIdLength, $tmp, $supplementary);
            } else {
                $this->fileId = Buffer::readAString($buffer, $this->fileIdLength, $tmp, $supplementary);
            }

            $pos = strpos($this->fileId, ';1');
            if ($pos !== false && $pos === strlen($this->fileId) - 2) {
                $this->fileId = substr($this->fileId, 0, strlen($this->fileId) - 2);
            }

            $this->fileId = trim($this->fileId);
        }

        $offset += $this->dirRecLength;
        return true;
    }

    /**
     * Test if the "Directory Record" is hidden
     */
    public function isHidden(): bool
    {
        return ($this->flags & self::FILE_MODE_HIDDEN) === self::FILE_MODE_HIDDEN;
    }

    /**
     * Test if the "Directory Record" is directory
     */
    public function isDirectory(): bool
    {
        return ($this->flags & self::FILE_MODE_DIRECTORY) === self::FILE_MODE_DIRECTORY;
    }

    /**
     * Test if the "Directory Record" is associated
     */
    public function isAssociated(): bool
    {
        return ($this->flags & self::FILE_MODE_ASSOCIATED) === self::FILE_MODE_ASSOCIATED;
    }

    /**
     * Test if the "Directory Record" is record
     */
    public function isRecord(): bool
    {
        return ($this->flags & self::FILE_MODE_RECORD) === self::FILE_MODE_RECORD;
    }

    /**
     * Test if the "Directory Record" is protected
     */
    public function isProtected(): bool
    {
        return ($this->flags & self::FILE_MODE_PROTECTED) === self::FILE_MODE_PROTECTED;
    }

    /**
     * Test if the "Directory Record" is a multi-extent
     */
    public function isMultiExtent(): bool
    {
        return ($this->flags & self::FILE_MODE_MULTI_EXTENT) === self::FILE_MODE_MULTI_EXTENT;
    }

    /**
     * Test if the "Directory Record" is a "node" to itself
     */
    public function isThis(): bool
    {
        if ($this->fileIdLength > 1) {
            return false;
        }

        return $this->fileId === '.';
    }

    /**
     * Test if the "Directory Record" is a "node" to its parent
     */
    public function isParent(): bool
    {
        if ($this->fileIdLength > 1) {
            return false;
        }

        return $this->fileId === '..';
    }

    /**
     * Load the "File Directory Descriptors" (extents) from ISO file
     *
     * @return array<int, FileDirectory>|false
     */
    public function loadExtents(IsoFile $isoFile, int $blockSize, bool $supplementary = false, int $jolietLevel = 0): array|false
    {
        return self::loadExtentsSt($isoFile, $blockSize, $this->location, $supplementary, $jolietLevel);
    }

    /**
     * Load the "File Directory Descriptors"(extents) from ISO file
     *
     * @return array<int, FileDirectory>|false
     */
    public static function loadExtentsSt(IsoFile $isoFile, int $blockSize, int $location, bool $supplementary = false, int $jolietLevel = 0): array|false
    {
        if ($isoFile->seek($location * $blockSize, SEEK_SET) === -1) {
            return false;
        }

        $string = $isoFile->read(4096);
        if ($string === false) {
            return false;
        }

        /** @var array<int, int>|false $bytes */
        $bytes = unpack('C*', $string);

        if ($bytes === false) {
            return false;
        }

        $offset = 1;
        $fdDesc = new self();
        $fdDesc->jolietLevel = $jolietLevel;
        $extents = [];

        while ($fdDesc->init($bytes, $offset, $supplementary) !== false) {
            $extents[] = $fdDesc;
            $fdDesc = new self();
            $fdDesc->jolietLevel = $jolietLevel;
        }

        return $extents;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace PhpIso;
6
7		use Carbon\Carbon;
8		use PhpIso\Util\Buffer;
9		use PhpIso\Util\IsoDate;
10
11		class FileDirectory
12		{
13		/**
14		* If set to ZERO, shall mean that the existence of the file shall be made known to the
15		* user upon an inquiry by the user.
16		* If set to ONE, shall mean that the existence of the file need not be made known to
17		* the user.
18		*/
19		public const FILE_MODE_HIDDEN = 0x01;
20
21		/**
22		* If set to ZERO, shall mean that the Directory Record does not identify a directory.
23		* If set to ONE, shall mean that the Directory Record identifies a directory.
24		*/
25		public const FILE_MODE_DIRECTORY = 0x02;
26
27		/**
28		* If set to ZERO, shall mean that the file is not an Associated File.
29		* If set to ONE, shall mean that the file is an Associated File.
30		*/
31		public const FILE_MODE_ASSOCIATED = 0x04;
32
33		/**
34		* If set to ZERO, shall mean that the structure of the information in the file is not
35		* specified by the Record Format field of any associated Extended Attribute Record (see 9.5.8).
36		* If set to ONE, shall mean that the structure of the information in the file has a
37		* record format specified by a number other than zero in the Record Format Field of
38		* the Extended Attribute Record (see 9.5.8).
39		*/
40		public const FILE_MODE_RECORD = 0x08;
41		/**
42		* If set to ZERO, shall mean that
43		* - an Owner Identification and a Group Identification are not specified for the file (see 9.5.1 and 9.5.2);
44		* - any user may read or execute the file (see 9.5.3). If set to ONE, shall mean that
45		* - an Owner Identification and a Group Identification are specified for the file (see 9.5.1 and 9.5.2);
46		* - at least one of the even-numbered bits or bit 0 in the Permissions field of the associated Extended Attribute Record is set to ONE (see 9.5.3).
47		*/
48		public const FILE_MODE_PROTECTED = 0x10;
49		/**
50		* If set to ZERO, shall mean that this is the final Directory Record for the file.
51		* If set to ONE, shall mean that this is not the final Directory Record for the file.
52		*/
53		public const FILE_MODE_MULTI_EXTENT = 0x80;
54
55		/**
56		* The length of the "Directory Record"
57		*/
58		public int $dirRecLength = 0;
59
60		/**
61		* The length of the "Directory Record" extended attribute record
62		*/
63		public int $extendedAttrRecordLength;
64
65		/**
66		* Location of extents
67		*/
68		public int $location;
69
70		/**
71		* The length of the data (the content for a file, the "child file & folder for a directory...
72		*/
73		public int $dataLength;
74
75		/**
76		* The recording date
77		*/
78		public ?Carbon $recordingDate = null;
79
80		/**
81		* File (or folder) flags.
82		*/
83		public int $flags;
84
85		/**
86		* The File Unit Size
87		*/
88		public int $fileUnitSize;
89
90		/**
91		* The Interleave Gap Size
92		*/
93		public int $interleaveGapSize;
94
95		/**
96		* The ordinal number of the volume in the Volume Set
97		*/
98		public int $volumeSeqNum;
99
100		/**
101		* The length of the file identifier
102		*/
103		public int $fileIdLength;
104
105		/**
106		* The file identifier
107		*/
108		public string $fileId;
109
110		public int $jolietLevel = 0;
111
112		/**
113		* Load the "Directory Record" from buffer
114		*
115		* @param array<int, int> $buffer
116		*/
117	19	public function init(array &$buffer, int &$offset, bool $supplementary = false): bool
118		{
119	19	$tmp = $offset;
120
121	19	$this->dirRecLength = $buffer[$tmp];
122	19	$tmp++;
123	19	if ($this->dirRecLength === 0) {
124	7	return false;
125		}
126
127	15	$this->extendedAttrRecordLength = $buffer[$tmp];
128	15	$tmp++;
129
130	15	$this->location = Buffer::readBBO($buffer, 8, $tmp);
131	15	$this->dataLength = Buffer::readBBO($buffer, 8, $tmp);
132
133	15	$this->recordingDate = IsoDate::init7($buffer, $tmp);
134
135	15	$this->flags = $buffer[$tmp];
136	15	$tmp++;
137	15	$this->fileUnitSize = $buffer[$tmp];
138	15	$tmp++;
139	15	$this->interleaveGapSize = $buffer[$tmp];
140	15	$tmp++;
141
142	15	$this->volumeSeqNum = Buffer::readBBO($buffer, 4, $tmp);
143
144	15	$this->fileIdLength = $buffer[$tmp];
145	15	$tmp++;
146
147	15	if ($this->fileIdLength === 1 && $buffer[$tmp] === 0) {
148	15	$this->fileId = '.';
149	15	$tmp++;
150	3	} elseif ($this->fileIdLength === 1 && $buffer[$tmp] === 1) {
151	3	$this->fileId = '..';
152	3	$tmp++;
153		} else {
154	3	if ($this->jolietLevel === 3) {
155		$this->fileId = Buffer::readDString($buffer, $this->fileIdLength, $tmp, $supplementary);
156		} else {
157	3	$this->fileId = Buffer::readAString($buffer, $this->fileIdLength, $tmp, $supplementary);
158		}
159
160	3	$pos = strpos($this->fileId, ';1');
161	3	if ($pos !== false && $pos === strlen($this->fileId) - 2) {
162	3	$this->fileId = substr($this->fileId, 0, strlen($this->fileId) - 2);
163		}
164
165	3	$this->fileId = trim($this->fileId);
166		}
167
168	15	$offset += $this->dirRecLength;
169	15	return true;
170		}
171
172		/**
173		* Test if the "Directory Record" is hidden
174		*/
175	2	public function isHidden(): bool
176		{
177	2	return ($this->flags & self::FILE_MODE_HIDDEN) === self::FILE_MODE_HIDDEN;
178		}
179
180		/**
181		* Test if the "Directory Record" is directory
182		*/
183	4	public function isDirectory(): bool
184		{
185	4	return ($this->flags & self::FILE_MODE_DIRECTORY) === self::FILE_MODE_DIRECTORY;
186		}
187
188		/**
189		* Test if the "Directory Record" is associated
190		*/
191	2	public function isAssociated(): bool
192		{
193	2	return ($this->flags & self::FILE_MODE_ASSOCIATED) === self::FILE_MODE_ASSOCIATED;
194		}
195
196		/**
197		* Test if the "Directory Record" is record
198		*/
199	2	public function isRecord(): bool
200		{
201	2	return ($this->flags & self::FILE_MODE_RECORD) === self::FILE_MODE_RECORD;
202		}
203
204		/**
205		* Test if the "Directory Record" is protected
206		*/
207	2	public function isProtected(): bool
208		{
209	2	return ($this->flags & self::FILE_MODE_PROTECTED) === self::FILE_MODE_PROTECTED;
210		}
211
212		/**
213		* Test if the "Directory Record" is a multi-extent
214		*/
215	2	public function isMultiExtent(): bool
216		{
217	2	return ($this->flags & self::FILE_MODE_MULTI_EXTENT) === self::FILE_MODE_MULTI_EXTENT;
218		}
219
220		/**
221		* Test if the "Directory Record" is a "node" to itself
222		*/
223	2	public function isThis(): bool
224		{
225	2	if ($this->fileIdLength > 1) {
226		return false;
227		}
228
229	2	return $this->fileId === '.';
230		}
231
232		/**
233		* Test if the "Directory Record" is a "node" to its parent
234		*/
235	2	public function isParent(): bool
236		{
237	2	if ($this->fileIdLength > 1) {
238		return false;
239		}
240
241	2	return $this->fileId === '..';
242		}
243
244		/**
245		* Load the "File Directory Descriptors" (extents) from ISO file
246		*
247		* @return array<int, FileDirectory>\|false
248		*/
249		public function loadExtents(IsoFile $isoFile, int $blockSize, bool $supplementary = false, int $jolietLevel = 0): array\|false
250		{
251		return self::loadExtentsSt($isoFile, $blockSize, $this->location, $supplementary, $jolietLevel);
252		}
253
254		/**
255		* Load the "File Directory Descriptors"(extents) from ISO file
256		*
257		* @return array<int, FileDirectory>\|false
258		*/
259	4	public static function loadExtentsSt(IsoFile $isoFile, int $blockSize, int $location, bool $supplementary = false, int $jolietLevel = 0): array\|false
260		{
261	4	if ($isoFile->seek($location * $blockSize, SEEK_SET) === -1) {
262		return false;
263		}
264
265	4	$string = $isoFile->read(4096);
266	4	if ($string === false) {
267		return false;
268		}
269
270		/** @var array<int, int>\|false $bytes */
271	4	$bytes = unpack('C*', $string);
272
273	4	if ($bytes === false) {
274		return false;
275		}
276
277	4	$offset = 1;
278	4	$fdDesc = new self();
279	4	$fdDesc->jolietLevel = $jolietLevel;
280	4	$extents = [];
281
282	4	while ($fdDesc->init($bytes, $offset, $supplementary) !== false) {
283	3	$extents[] = $fdDesc;
284	3	$fdDesc = new self();
285	3	$fdDesc->jolietLevel = $jolietLevel;
286		}
287
288	4	return $extents;
289		}
290		}
291

indy2kro / php-iso

FileDirectory::isThis() A last analyzed 2025-05-17 06:32 UTC

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FileDirectory::isThis() A
last analyzed 2025-05-17 06:32 UTC