PhpPsdReader::_getPackedBitsDecoded() - Code Metrics - Inspection of "escape single/double quotes" - mambax7/xoopseditors - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 02f2d8...e7d60a )

by Michael

created 2020-01-01 00:41 UTC

PhpPsdReader::_getPackedBitsDecoded() B

↳ Parent: PhpPsdReader

Complexity

Conditions	7
Paths	6

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	7
nc	6
nop	1
dl	0
loc	45
rs	8.2666
c	0
b	0
f	0

<?php
/* This file is released under the GPL, any version you like
*
*	PHP PSD reader class, v1.3
*
*	By Tim de Koning
*
*	Kingsquare Information Services, 22 jan 2007
*
*	example use:
*	------------
*	<?php
*	include_once('classPhpPsdReader.php')
*	header("Content-type: image/jpeg");
*	print imagejpeg(imagecreatefrompsd('test.psd'));
*	?>
*
*	More info, bugs or requests, contact [email protected]
*
*	Latest version and demo: http://www.kingsquare.nl/phppsdreader
*
*	TODO
*	----
*	- read color values for "multichannel data" PSD files
*	- find and implement (hunter)lab to RGB algorithm
*	- fix 32 bit colors... has something to do with gamma and exposure available since CS2, but dunno how to read them...
*/

class PhpPsdReader
{
    public $infoArray;
    public $fp;
    public $fileName;
    public $tempFileName;
    public $colorBytesLength;

    public function __construct($fileName)
    {
        set_time_limit(0);
        $this->infoArray = [];
        $this->fileName  = $fileName;
        $this->fp        = fopen($this->fileName, 'rb');

        if ('8BPS' === fread($this->fp, 4)) {
            $this->infoArray['version id'] = $this->_getInteger(2);
            fseek($this->fp, 6, SEEK_CUR); // 6 bytes of 0's
            $this->infoArray['channels']   = $this->_getInteger(2);
            $this->infoArray['rows']       = $this->_getInteger(4);
            $this->infoArray['columns']    = $this->_getInteger(4);
            $this->infoArray['colorDepth'] = $this->_getInteger(2);
            $this->infoArray['colorMode']  = $this->_getInteger(2);

            /* COLOR MODE DATA SECTION */ //4bytes Length The length of the following color data.
            $this->infoArray['colorModeDataSectionLength'] = $this->_getInteger(4);
            fseek($this->fp, $this->infoArray['colorModeDataSectionLength'], SEEK_CUR); // ignore this snizzle

            /*  IMAGE RESOURCES */
            $this->infoArray['imageResourcesSectionLength'] = $this->_getInteger(4);
            fseek($this->fp, $this->infoArray['imageResourcesSectionLength'], SEEK_CUR); // ignore this snizzle

            /*  LAYER AND MASK */
            $this->infoArray['layerMaskDataSectionLength'] = $this->_getInteger(4);
            fseek($this->fp, $this->infoArray['layerMaskDataSectionLength'], SEEK_CUR); // ignore this snizzle

            /*  IMAGE DATA */
            $this->infoArray['compressionType']           = $this->_getInteger(2);
            $this->infoArray['oneColorChannelPixelBytes'] = $this->infoArray['colorDepth'] / 8;
            $this->colorBytesLength                       = $this->infoArray['rows'] * $this->infoArray['columns'] * $this->infoArray['oneColorChannelPixelBytes'];

            if (2 == $this->infoArray['colorMode']) {
                $this->infoArray['error'] = 'images with indexed colours are not supported yet';
                return false;

            }
        } else {
            $this->infoArray['error'] = 'invalid or unsupported psd';
            return false;

        }
    }

    public function getImage()
    {
        // decompress image data if required
        switch ($this->infoArray['compressionType']) {
            // case 2:, case 3: zip not supported yet..
            case 1:
                // packed bits
                $this->infoArray['scanLinesByteCounts'] = [];
                for ($i = 0; $i < ($this->infoArray['rows'] * $this->infoArray['channels']); $i++) {
                    $this->infoArray['scanLinesByteCounts'][] = $this->_getInteger(2);
                }
                $this->tempFileName = tempnam(realpath('/tmp'), 'decompressedImageData');
                $tfp                = fopen($this->tempFileName, 'wb');
                foreach ($this->infoArray['scanLinesByteCounts'] as $scanLinesByteCount) {
                    fwrite($tfp, $this->_getPackedBitsDecoded(fread($this->fp, $scanLinesByteCount)));
                }
                fclose($tfp);
                fclose($this->fp);
                $this->fp = fopen($this->tempFileName, 'rb');
            default:
                // continue with current file handle;
                break;
        }

        // let's write pixel by pixel....
        $image = imagecreatetruecolor($this->infoArray['columns'], $this->infoArray['rows']);

        for ($rowPointer = 0; ($rowPointer < $this->infoArray['rows']); $rowPointer++) {
            for ($columnPointer = 0; ($columnPointer < $this->infoArray['columns']); $columnPointer++) {
                /* 	The color mode of the file. Supported values are: Bitmap=0;
                    Grayscale=1; Indexed=2; RGB=3; CMYK=4; Multichannel=7;
                    Duotone=8; Lab=9.
                */
                switch ($this->infoArray['colorMode']) {
                    case 2: // indexed... info should be able to extract from color mode data section. not implemented yet, so is grayscale
                        exit;
                        break;
function fx() {
    try {
        doSomething();
        return true;
    }
    catch (\Exception $e) {
        return false;
    }

    return false;
}
                    case 0:
                        // bit by bit
                        if (0 == $columnPointer) {
                            $bitPointer = 0;
                        }
                        if (0 == $bitPointer) {
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}
                            $currentByteBits = str_pad(base_convert(bin2hex(fread($this->fp, 1)), 16, 2), 8, '0', STR_PAD_LEFT);
                        }
                        $r = $g = $b = (('1' == $currentByteBits[$bitPointer]) ? 0 : 255);
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}
                        $bitPointer++;
                        if (8 == $bitPointer) {
                            $bitPointer = 0;
                        }
                        break;

                    case 1:
                    case 8: // 8 is indexed with 1 color..., so grayscale
                        $r = $g = $b = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        break;

                    case 4: // CMYK
                        $c                 = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        $currentPointerPos = ftell($this->fp);
                        fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
                        $m = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
                        $y = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
                        $k = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        fseek($this->fp, $currentPointerPos);
                        $r = round(($c * $k) / (pow(2, $this->infoArray['colorDepth']) - 1));
                        $g = round(($m * $k) / (pow(2, $this->infoArray['colorDepth']) - 1));
                        $b = round(($y * $k) / (pow(2, $this->infoArray['colorDepth']) - 1));

                        break;

                    case 9: // hunter Lab
                        // i still need an understandable lab2rgb convert algorithm... if you have one, please let me know!
                        $l                 = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        $currentPointerPos = ftell($this->fp);
                        fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
                        $a = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
                        $b = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        fseek($this->fp, $currentPointerPos);

                        $r = $l;
                        $g = $a;
                        $b = $b;


                        break;
                    default:
                        $r                 = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        $currentPointerPos = ftell($this->fp);
                        fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
                        $g = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
                        $b = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
                        fseek($this->fp, $currentPointerPos);
                        break;
                }

                if ((2 == $this->infoArray['oneColorChannelPixelBytes'])) {
                    $r = $r >> 8;
                    $g = $g >> 8;
                    $b = $b >> 8;
                } elseif ((4 == $this->infoArray['oneColorChannelPixelBytes'])) {
                    $r = $r >> 24;
                    $g = $g >> 24;
                    $b = $b >> 24;
                }

                $pixelColor = imagecolorallocate($image, $r, $g, $b);
                imagesetpixel($image, $columnPointer, $rowPointer, $pixelColor);
            }
        }
        fclose($this->fp);
        if (isset($this->tempFileName)) {
            unlink($this->tempFileName);
        }
        return $image;
    }

    /**
     *
     * PRIVATE FUNCTIONS
     * @param $string
     * @return string
     */


    public function _getPackedBitsDecoded($string)
    {
        /*
        The PackBits algorithm will precede a block of data with a one byte header n, where n is interpreted as follows:
        n Meaning
        0 to 127 Copy the next n + 1 symbols verbatim
        -127 to -1 Repeat the next symbol 1 - n times
        -128 Do nothing

        Decoding:
        Step 1. Read the block header (n).
        Step 2. If the header is an EOF exit.
        Step 3. If n is non-negative, copy the next n + 1 symbols to the output stream and go to step 1.
        Step 4. If n is negative, write 1 - n copies of the next symbol to the output stream and go to step 1.

        */

        $stringPointer = 0;
        $returnString  = '';

        while (1) {
            if (isset($string[$stringPointer])) {
                $headerByteValue = $this->_unsignedToSigned(hexdec(bin2hex($string[$stringPointer])), 1);
            } else {
                return $returnString;
            }
            $stringPointer++;

            if ($headerByteValue >= 0) {
                for ($i = 0; $i <= $headerByteValue; $i++) {
                    $returnString .= $string[$stringPointer];
                    $stringPointer++;
                }
            } else {
                if (-128 != $headerByteValue) {
                    $copyByte = $string[$stringPointer];
                    $stringPointer++;

                    for ($i = 0; $i < (1 - $headerByteValue); $i++) {
                        $returnString .= $copyByte;
                    }
                }
            }
        }
    }

    public function _unsignedToSigned($int, $byteSize = 1)

    {
        switch ($byteSize) {
            case 1:
                if ($int < 128) {
                    return $int;
                } else {
                    return -256 + $int;
                }
                break;
function fx() {
    try {
        doSomething();
        return true;
    }
    catch (\Exception $e) {
        return false;
    }

    return false;
}

            case 2:
                if ($int < 32768) {
                    return $int;
                } else {
                    return -65536 + $int;
                }

            case 4:
                if ($int < 2147483648) {
                    return $int;
                } else {
                    return -4294967296 + $int;
                }

            default:
                return $int;
        }
    }

    public function _hexReverse($hex)
    {
        $output = '';
        if (strlen($hex) % 2) {
            return false;
        }
        for ($pointer = strlen($hex); $pointer >= 0; $pointer -= 2) {
            $output .= substr($hex, $pointer, 2);
        }
        return $output;
    }

    public function _getInteger($byteCount = 1)

    {
        switch ($byteCount) {
            case 4:
                // for some strange reason this is still broken...
                return @reset(unpack('N', fread($this->fp, 4)));

                break;
switch ($x) {
    case 1:
        return 'foo';
        break; // This break is not necessary and can be left off.
}

            case 2:
                return @reset(unpack('n', fread($this->fp, 2)));

                break;
switch ($x) {
    case 1:
        return 'foo';
        break; // This break is not necessary and can be left off.
}

            default:
                return hexdec($this->_hexReverse(bin2hex(fread($this->fp, $byteCount))));
        }
    }
}

/**
 * Returns an image identifier representing the image obtained from the given filename, using only GD, returns an empty string on failure
 *
 * @param string $fileName
 * @return image identifier
 */


function imagecreatefrompsd($fileName)
{
    $psdReader = new PhpPsdReader($fileName);
    if (isset($psdReader->infoArray['error'])) {
        return '';
    } else {
        return $psdReader->getImage();
    }
}


Push — master ( 02f2d8...e7d60a )

PhpPsdReader::_getPackedBitsDecoded() B

Complexity

Size

Duplication

Importance

Available Fixes

Available Fixes

1			<?php
2			/* This file is released under the GPL, any version you like
3			*
4			* PHP PSD reader class, v1.3
5			*
6			* By Tim de Koning
7			*
8			* Kingsquare Information Services, 22 jan 2007
9			*
10			* example use:
11			* ------------
12			* <?php
13			* include_once('classPhpPsdReader.php')
14			* header("Content-type: image/jpeg");
15			* print imagejpeg(imagecreatefrompsd('test.psd'));
16			* ?>
17			*
18			* More info, bugs or requests, contact [email protected]
19			*
20			* Latest version and demo: http://www.kingsquare.nl/phppsdreader
21			*
22			* TODO
23			* ----
24			* - read color values for "multichannel data" PSD files
25			* - find and implement (hunter)lab to RGB algorithm
26			* - fix 32 bit colors... has something to do with gamma and exposure available since CS2, but dunno how to read them...
27			*/
28
29			class PhpPsdReader
30			{
31			public $infoArray;
32			public $fp;
33			public $fileName;
34			public $tempFileName;
35			public $colorBytesLength;
36
37			public function __construct($fileName)
38			{
39			set_time_limit(0);
40			$this->infoArray = [];
41			$this->fileName = $fileName;
42			$this->fp = fopen($this->fileName, 'rb');
43
44			if ('8BPS' === fread($this->fp, 4)) {
45			$this->infoArray['version id'] = $this->_getInteger(2);
46			fseek($this->fp, 6, SEEK_CUR); // 6 bytes of 0's
47			$this->infoArray['channels'] = $this->_getInteger(2);
48			$this->infoArray['rows'] = $this->_getInteger(4);
49			$this->infoArray['columns'] = $this->_getInteger(4);
50			$this->infoArray['colorDepth'] = $this->_getInteger(2);
51			$this->infoArray['colorMode'] = $this->_getInteger(2);
52
53			/* COLOR MODE DATA SECTION */ //4bytes Length The length of the following color data.
54			$this->infoArray['colorModeDataSectionLength'] = $this->_getInteger(4);
55			fseek($this->fp, $this->infoArray['colorModeDataSectionLength'], SEEK_CUR); // ignore this snizzle
56
57			/* IMAGE RESOURCES */
58			$this->infoArray['imageResourcesSectionLength'] = $this->_getInteger(4);
59			fseek($this->fp, $this->infoArray['imageResourcesSectionLength'], SEEK_CUR); // ignore this snizzle
60
61			/* LAYER AND MASK */
62			$this->infoArray['layerMaskDataSectionLength'] = $this->_getInteger(4);
63			fseek($this->fp, $this->infoArray['layerMaskDataSectionLength'], SEEK_CUR); // ignore this snizzle
64
65			/* IMAGE DATA */
66			$this->infoArray['compressionType'] = $this->_getInteger(2);
67			$this->infoArray['oneColorChannelPixelBytes'] = $this->infoArray['colorDepth'] / 8;
68			$this->colorBytesLength = $this->infoArray['rows'] * $this->infoArray['columns'] * $this->infoArray['oneColorChannelPixelBytes'];
69
70			if (2 == $this->infoArray['colorMode']) {
71			$this->infoArray['error'] = 'images with indexed colours are not supported yet';
72			return false;
			0 ignored issues – show Bug introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report Constructors do not have meaningful return values, anything that is returned from here is discarded. Are you sure this is correct? Loading history...
73			}
74			} else {
75			$this->infoArray['error'] = 'invalid or unsupported psd';
76			return false;
			0 ignored issues – show Bug introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report Constructors do not have meaningful return values, anything that is returned from here is discarded. Are you sure this is correct? Loading history...
77			}
78			}
79
80			public function getImage()
81			{
82			// decompress image data if required
83			switch ($this->infoArray['compressionType']) {
84			// case 2:, case 3: zip not supported yet..
85			case 1:
86			// packed bits
87			$this->infoArray['scanLinesByteCounts'] = [];
88			for ($i = 0; $i < ($this->infoArray['rows'] * $this->infoArray['channels']); $i++) {
89			$this->infoArray['scanLinesByteCounts'][] = $this->_getInteger(2);
90			}
91			$this->tempFileName = tempnam(realpath('/tmp'), 'decompressedImageData');
92			$tfp = fopen($this->tempFileName, 'wb');
93			foreach ($this->infoArray['scanLinesByteCounts'] as $scanLinesByteCount) {
94			fwrite($tfp, $this->_getPackedBitsDecoded(fread($this->fp, $scanLinesByteCount)));
95			}
96			fclose($tfp);
97			fclose($this->fp);
98			$this->fp = fopen($this->tempFileName, 'rb');
99			default:
100			// continue with current file handle;
101			break;
102			}
103
104			// let's write pixel by pixel....
105			$image = imagecreatetruecolor($this->infoArray['columns'], $this->infoArray['rows']);
106
107			for ($rowPointer = 0; ($rowPointer < $this->infoArray['rows']); $rowPointer++) {
108			for ($columnPointer = 0; ($columnPointer < $this->infoArray['columns']); $columnPointer++) {
109			/* The color mode of the file. Supported values are: Bitmap=0;
110			Grayscale=1; Indexed=2; RGB=3; CMYK=4; Multichannel=7;
111			Duotone=8; Lab=9.
112			*/
113			switch ($this->infoArray['colorMode']) {
114			case 2: // indexed... info should be able to extract from color mode data section. not implemented yet, so is grayscale
115			exit;
116			break;
			0 ignored issues – show Unused Code introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report `break;` does not seem to be reachable. This check looks for unreachable code. It uses sophisticated control flow analysis techniques to find statements which will never be executed. Unreachable code is most often the result of `return`, `die` or `exit` statements that have been added for debug purposes. function fx() { try { doSomething(); return true; } catch (\Exception $e) { return false; } return false; } In the above example, the last `return false` will never be executed, because a return statement has already been met in every possible execution path. Loading history...
117			case 0:
118			// bit by bit
119			if (0 == $columnPointer) {
120			$bitPointer = 0;
121			}
122			if (0 == $bitPointer) {
			0 ignored issues – show Bug introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report The variable `$bitPointer` does not seem to be defined for all execution paths leading up to this point. If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } // $x is potentially undefined here. echo $x; } In the above example, the variable `$x` is defined if you pass “foo” or “bar” as argument for `$a`. However, since the `switch` statement has no default case statement, if you pass any other value, the variable `$x` would be undefined. Available Fixes Check for existence of the variable explicitly: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } if (isset($x)) { // Make sure it's always set. echo $x; } } Define a default value for the variable: function myFunction($a) { $x = ''; // Set a default which gets overridden for certain paths. switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } echo $x; } Add a value for the missing path: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; // We add support for the missing case. default: $x = ''; break; } echo $x; } Loading history...
123			$currentByteBits = str_pad(base_convert(bin2hex(fread($this->fp, 1)), 16, 2), 8, '0', STR_PAD_LEFT);
124			}
125			$r = $g = $b = (('1' == $currentByteBits[$bitPointer]) ? 0 : 255);
			0 ignored issues – show Bug introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report The variable `$currentByteBits` does not seem to be defined for all execution paths leading up to this point. If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } // $x is potentially undefined here. echo $x; } In the above example, the variable `$x` is defined if you pass “foo” or “bar” as argument for `$a`. However, since the `switch` statement has no default case statement, if you pass any other value, the variable `$x` would be undefined. Available Fixes Check for existence of the variable explicitly: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } if (isset($x)) { // Make sure it's always set. echo $x; } } Define a default value for the variable: function myFunction($a) { $x = ''; // Set a default which gets overridden for certain paths. switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } echo $x; } Add a value for the missing path: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; // We add support for the missing case. default: $x = ''; break; } echo $x; } Loading history...
126			$bitPointer++;
127			if (8 == $bitPointer) {
128			$bitPointer = 0;
129			}
130			break;
131
132			case 1:
133			case 8: // 8 is indexed with 1 color..., so grayscale
134			$r = $g = $b = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
135			break;
136
137			case 4: // CMYK
138			$c = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
139			$currentPointerPos = ftell($this->fp);
140			fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
141			$m = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
142			fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
143			$y = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
144			fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
145			$k = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
146			fseek($this->fp, $currentPointerPos);
147			$r = round(($c * $k) / (pow(2, $this->infoArray['colorDepth']) - 1));
148			$g = round(($m * $k) / (pow(2, $this->infoArray['colorDepth']) - 1));
149			$b = round(($y * $k) / (pow(2, $this->infoArray['colorDepth']) - 1));
150
151			break;
152
153			case 9: // hunter Lab
154			// i still need an understandable lab2rgb convert algorithm... if you have one, please let me know!
155			$l = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
156			$currentPointerPos = ftell($this->fp);
157			fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
158			$a = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
159			fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
160			$b = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
161			fseek($this->fp, $currentPointerPos);
162
163			$r = $l;
164			$g = $a;
165			$b = $b;
			0 ignored issues – show Bug introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report Why assign `$b` to itself? This checks looks for cases where a variable has been assigned to itself. This assignement can be removed without consequences. Loading history...
166
167			break;
168			default:
169			$r = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
170			$currentPointerPos = ftell($this->fp);
171			fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
172			$g = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
173			fseek($this->fp, $this->colorBytesLength - 1, SEEK_CUR);
174			$b = $this->_getInteger($this->infoArray['oneColorChannelPixelBytes']);
175			fseek($this->fp, $currentPointerPos);
176			break;
177			}
178
179			if ((2 == $this->infoArray['oneColorChannelPixelBytes'])) {
180			$r = $r >> 8;
181			$g = $g >> 8;
182			$b = $b >> 8;
183			} elseif ((4 == $this->infoArray['oneColorChannelPixelBytes'])) {
184			$r = $r >> 24;
185			$g = $g >> 24;
186			$b = $b >> 24;
187			}
188
189			$pixelColor = imagecolorallocate($image, $r, $g, $b);
190			imagesetpixel($image, $columnPointer, $rowPointer, $pixelColor);
191			}
192			}
193			fclose($this->fp);
194			if (isset($this->tempFileName)) {
195			unlink($this->tempFileName);
196			}
197			return $image;
198			}
199
200			/**
201			*
202			* PRIVATE FUNCTIONS
203			* @param $string
204			* @return string
205			*/
			0 ignored issues – show Documentation introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report Should the return type not be `string\|null`? This check compares the return type specified in the `@return` annotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch. Loading history...
206
207			public function _getPackedBitsDecoded($string)
208			{
209			/*
210			The PackBits algorithm will precede a block of data with a one byte header n, where n is interpreted as follows:
211			n Meaning
212			0 to 127 Copy the next n + 1 symbols verbatim
213			-127 to -1 Repeat the next symbol 1 - n times
214			-128 Do nothing
215
216			Decoding:
217			Step 1. Read the block header (n).
218			Step 2. If the header is an EOF exit.
219			Step 3. If n is non-negative, copy the next n + 1 symbols to the output stream and go to step 1.
220			Step 4. If n is negative, write 1 - n copies of the next symbol to the output stream and go to step 1.
221
222			*/
223
224			$stringPointer = 0;
225			$returnString = '';
226
227			while (1) {
228			if (isset($string[$stringPointer])) {
229			$headerByteValue = $this->_unsignedToSigned(hexdec(bin2hex($string[$stringPointer])), 1);
230			} else {
231			return $returnString;
232			}
233			$stringPointer++;
234
235			if ($headerByteValue >= 0) {
236			for ($i = 0; $i <= $headerByteValue; $i++) {
237			$returnString .= $string[$stringPointer];
238			$stringPointer++;
239			}
240			} else {
241			if (-128 != $headerByteValue) {
242			$copyByte = $string[$stringPointer];
243			$stringPointer++;
244
245			for ($i = 0; $i < (1 - $headerByteValue); $i++) {
246			$returnString .= $copyByte;
247			}
248			}
249			}
250			}
251			}
252
253			public function _unsignedToSigned($int, $byteSize = 1)
			0 ignored issues – show Documentation introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report The return type could not be reliably inferred; please add a `@return` annotation. Our type inference engine in quite powerful, but sometimes the code does not provide enough clues to go by. In these cases we request you to add a `@return` annotation as described here. Loading history...
254			{
255			switch ($byteSize) {
256			case 1:
257			if ($int < 128) {
258			return $int;
259			} else {
260			return -256 + $int;
261			}
262			break;
			0 ignored issues – show Unused Code introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report `break;` does not seem to be reachable. This check looks for unreachable code. It uses sophisticated control flow analysis techniques to find statements which will never be executed. Unreachable code is most often the result of `return`, `die` or `exit` statements that have been added for debug purposes. function fx() { try { doSomething(); return true; } catch (\Exception $e) { return false; } return false; } In the above example, the last `return false` will never be executed, because a return statement has already been met in every possible execution path. Loading history...
263
264			case 2:
265			if ($int < 32768) {
266			return $int;
267			} else {
268			return -65536 + $int;
269			}
270
271			case 4:
272			if ($int < 2147483648) {
273			return $int;
274			} else {
275			return -4294967296 + $int;
276			}
277
278			default:
279			return $int;
280			}
281			}
282
283			public function _hexReverse($hex)
284			{
285			$output = '';
286			if (strlen($hex) % 2) {
287			return false;
288			}
289			for ($pointer = strlen($hex); $pointer >= 0; $pointer -= 2) {
290			$output .= substr($hex, $pointer, 2);
291			}
292			return $output;
293			}
294
295			public function _getInteger($byteCount = 1)
			0 ignored issues – show Documentation introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report The return type could not be reliably inferred; please add a `@return` annotation. Our type inference engine in quite powerful, but sometimes the code does not provide enough clues to go by. In these cases we request you to add a `@return` annotation as described here. Loading history...
296			{
297			switch ($byteCount) {
298			case 4:
299			// for some strange reason this is still broken...
300			return @reset(unpack('N', fread($this->fp, 4)));
			0 ignored issues – show Bug introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report `unpack('N', fread($this->fp, 4))` cannot be passed to `reset()` as the parameter `$array` expects a reference. Loading history...
301			break;
			0 ignored issues – show Unused Code introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report `break` is not strictly necessary here and could be removed. The `break` statement is not necessary if it is preceded for example by a `return` statement: switch ($x) { case 1: return 'foo'; break; // This break is not necessary and can be left off. } If you would like to keep this construct to be consistent with other `case` statements, you can safely mark this issue as a false-positive. Loading history...
302
303			case 2:
304			return @reset(unpack('n', fread($this->fp, 2)));
			0 ignored issues – show Bug introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report `unpack('n', fread($this->fp, 2))` cannot be passed to `reset()` as the parameter `$array` expects a reference. Loading history...
305			break;
			0 ignored issues – show Unused Code introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report `break` is not strictly necessary here and could be removed. The `break` statement is not necessary if it is preceded for example by a `return` statement: switch ($x) { case 1: return 'foo'; break; // This break is not necessary and can be left off. } If you would like to keep this construct to be consistent with other `case` statements, you can safely mark this issue as a false-positive. Loading history...
306
307			default:
308			return hexdec($this->_hexReverse(bin2hex(fread($this->fp, $byteCount))));
309			}
310			}
311			}
312
313			/**
314			* Returns an image identifier representing the image obtained from the given filename, using only GD, returns an empty string on failure
315			*
316			* @param string $fileName
317			* @return image identifier
318			*/
			0 ignored issues – show Documentation introduced 2020-01-01 00:43 UTC by Report Bug Copy Issue Report Should the return type not be `string\|null\|resource`? This check compares the return type specified in the `@return` annotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch. Loading history...
319
320			function imagecreatefrompsd($fileName)
321			{
322			$psdReader = new PhpPsdReader($fileName);
323			if (isset($psdReader->infoArray['error'])) {
324			return '';
325			} else {
326			return $psdReader->getImage();
327			}
328			}
329

mambax7 / xoopseditors

Push — master ( 02f2d8...e7d60a )

PhpPsdReader::_getPackedBitsDecoded() B

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