qrmask::makeMaskNo() - Code Metrics - aepnat/simpuskesmas - Measure and Improve Code Quality continuously with Scrutinizer

qrmask::makeMaskNo() B
last analyzed 2019-02-14 14:22 UTC

↳ Parent: qrmask

Complexity

Conditions	8
Paths	20

Size

Total Lines	37
Code Lines	22

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	8
eloc	22
nc	20
nop	5
dl	0
loc	37
rs	8.4444
c	1
b	0
f	0

<?php
/*
 * PHP QR Code encoder
 *
 * Masking
 *
 * Based on libqrencode C library distributed under LGPL 2.1
 * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <[email protected]>
 *
 * PHP QR Code is distributed under LGPL 3
 * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

    define('N1', 3);
    define('N2', 3);
    define('N3', 40);
    define('N4', 10);

    class qrmask
    {
        public $runLength = [];

        //----------------------------------------------------------------------
        public function __construct()
        {
            $this->runLength = array_fill(0, QRSPEC_WIDTH_MAX + 1, 0);
        }

        //----------------------------------------------------------------------
        public function writeFormatInformation($width, &$frame, $mask, $level)
        {
            $blacks = 0;
            $format = QRspec::getFormatInfo($mask, $level);

            for ($i = 0; $i < 8; $i++) {
                if ($format & 1) {
                    $blacks += 2;
                    $v = 0x85;
                } else {
                    $v = 0x84;
                }

                $frame[8][$width - 1 - $i] = chr($v);
                if ($i < 6) {
                    $frame[$i][8] = chr($v);
                } else {
                    $frame[$i + 1][8] = chr($v);
                }
                $format = $format >> 1;
            }

            for ($i = 0; $i < 7; $i++) {
                if ($format & 1) {
                    $blacks += 2;
                    $v = 0x85;
                } else {
                    $v = 0x84;
                }

                $frame[$width - 7 + $i][8] = chr($v);
                if ($i == 0) {
                    $frame[8][7] = chr($v);
                } else {
                    $frame[8][6 - $i] = chr($v);
                }

                $format = $format >> 1;
            }

            return $blacks;
        }

        //----------------------------------------------------------------------
        public function mask0($x, $y)
        {
            return ($x + $y) & 1;
        }

        public function mask1($x, $y)
        {
            return $y & 1;
        }

        public function mask2($x, $y)
        {
            return $x % 3;
        }

        public function mask3($x, $y)
        {
            return ($x + $y) % 3;
        }

        public function mask4($x, $y)
        {
            return (((int) ($y / 2)) + ((int) ($x / 3))) & 1;
        }

        public function mask5($x, $y)
        {
            return (($x * $y) & 1) + ($x * $y) % 3;
        }

        public function mask6($x, $y)
        {
            return ((($x * $y) & 1) + ($x * $y) % 3) & 1;
        }

        public function mask7($x, $y)
        {
            return ((($x * $y) % 3) + (($x + $y) & 1)) & 1;
        }

        //----------------------------------------------------------------------
        private function generateMaskNo($maskNo, $width, $frame)
        {
            $bitMask = array_fill(0, $width, array_fill(0, $width, 0));

            for ($y = 0; $y < $width; $y++) {
                for ($x = 0; $x < $width; $x++) {
                    if (ord($frame[$y][$x]) & 0x80) {
                        $bitMask[$y][$x] = 0;
                    } else {
                        $maskFunc = call_user_func([$this, 'mask'.$maskNo], $x, $y);
                        $bitMask[$y][$x] = ($maskFunc == 0) ? 1 : 0;
                    }
                }
            }

            return $bitMask;
        }

        //----------------------------------------------------------------------
        public static function serial($bitFrame)
        {
            $codeArr = [];

            foreach ($bitFrame as $line) {
                $codeArr[] = implode('', $line);
            }

            return gzcompress(implode("\n", $codeArr), 9);
        }

        //----------------------------------------------------------------------
        public static function unserial($code)
        {
            $codeArr = [];

            $codeLines = explode("\n", gzuncompress($code));
            foreach ($codeLines as $line) {
                $codeArr[] = str_split($line);
            }

            return $codeArr;
        }

        //----------------------------------------------------------------------
        public function makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly = false)
        {
            $b = 0;
            $bitMask = [];

            $fileName = QR_CACHE_DIR.'mask_'.$maskNo.DIRECTORY_SEPARATOR.'mask_'.$width.'_'.$maskNo.'.dat';

            if (QR_CACHEABLE) {
                if (file_exists($fileName)) {
                    $bitMask = self::unserial(file_get_contents($fileName));
                } else {
                    $bitMask = $this->generateMaskNo($maskNo, $width, $s);
                    if (!file_exists(QR_CACHE_DIR.'mask_'.$maskNo)) {
                        mkdir(QR_CACHE_DIR.'mask_'.$maskNo);
                    }
                    file_put_contents($fileName, self::serial($bitMask));
                }
            } else {
                $bitMask = $this->generateMaskNo($maskNo, $width, $s);
            }

            if ($maskGenOnly) {
                return;
            }

            $d = $s;

            for ($y = 0; $y < $width; $y++) {
                for ($x = 0; $x < $width; $x++) {
                    if ($bitMask[$y][$x] == 1) {
                        $d[$y][$x] = chr(ord($s[$y][$x]) ^ (int) $bitMask[$y][$x]);
                    }
                    $b += (int) (ord($d[$y][$x]) & 1);
                }
            }

            return $b;
        }

        //----------------------------------------------------------------------
        public function makeMask($width, $frame, $maskNo, $level)
        {
            $masked = array_fill(0, $width, str_repeat("\0", $width));
            $this->makeMaskNo($maskNo, $width, $frame, $masked);
            $this->writeFormatInformation($width, $masked, $maskNo, $level);

            return $masked;
        }

        //----------------------------------------------------------------------
        public function calcN1N3($length)
        {
            $demerit = 0;

            for ($i = 0; $i < $length; $i++) {
                if ($this->runLength[$i] >= 5) {
                    $demerit += (N1 + ($this->runLength[$i] - 5));
                }
                if ($i & 1) {
                    if (($i >= 3) && ($i < ($length - 2)) && ($this->runLength[$i] % 3 == 0)) {
                        $fact = (int) ($this->runLength[$i] / 3);
                        if (($this->runLength[$i - 2] == $fact) &&
                           ($this->runLength[$i - 1] == $fact) &&
                           ($this->runLength[$i + 1] == $fact) &&
                           ($this->runLength[$i + 2] == $fact)) {
                            if (($this->runLength[$i - 3] < 0) || ($this->runLength[$i - 3] >= (4 * $fact))) {
                                $demerit += N3;
                            } elseif ((($i + 3) >= $length) || ($this->runLength[$i + 3] >= (4 * $fact))) {
                                $demerit += N3;
                            }
                        }
                    }
                }
            }

            return $demerit;
        }

        //----------------------------------------------------------------------
        public function evaluateSymbol($width, $frame)
        {
            $head = 0;
            $demerit = 0;

            for ($y = 0; $y < $width; $y++) {
                $head = 0;
                $this->runLength[0] = 1;

                $frameY = $frame[$y];

                if ($y > 0) {
                    $frameYM = $frame[$y - 1];
                }

                for ($x = 0; $x < $width; $x++) {
                    if (($x > 0) && ($y > 0)) {
                        $b22 = ord($frameY[$x]) & ord($frameY[$x - 1]) & ord($frameYM[$x]) & ord($frameYM[$x - 1]);

                        $w22 = ord($frameY[$x]) | ord($frameY[$x - 1]) | ord($frameYM[$x]) | ord($frameYM[$x - 1]);

                        if (($b22 | ($w22 ^ 1)) & 1) {
                            $demerit += N2;
                        }
                    }
                    if (($x == 0) && (ord($frameY[$x]) & 1)) {
                        $this->runLength[0] = -1;
                        $head = 1;
                        $this->runLength[$head] = 1;
                    } elseif ($x > 0) {
                        if ((ord($frameY[$x]) ^ ord($frameY[$x - 1])) & 1) {
                            $head++;
                            $this->runLength[$head] = 1;
                        } else {
                            $this->runLength[$head]++;
                        }
                    }
                }

                $demerit += $this->calcN1N3($head + 1);
            }

            for ($x = 0; $x < $width; $x++) {
                $head = 0;
                $this->runLength[0] = 1;

                for ($y = 0; $y < $width; $y++) {
                    if ($y == 0 && (ord($frame[$y][$x]) & 1)) {
                        $this->runLength[0] = -1;
                        $head = 1;
                        $this->runLength[$head] = 1;
                    } elseif ($y > 0) {
                        if ((ord($frame[$y][$x]) ^ ord($frame[$y - 1][$x])) & 1) {
                            $head++;
                            $this->runLength[$head] = 1;
                        } else {
                            $this->runLength[$head]++;
                        }
                    }
                }

                $demerit += $this->calcN1N3($head + 1);
            }

            return $demerit;
        }

        //----------------------------------------------------------------------
        public function mask($width, $frame, $level)
        {
            $minDemerit = PHP_INT_MAX;
            $bestMaskNum = 0;

            $bestMask = [];


            $checked_masks = [0, 1, 2, 3, 4, 5, 6, 7];

            if (QR_FIND_FROM_RANDOM !== false) {

                $howManuOut = 8 - (QR_FIND_FROM_RANDOM % 9);
                for ($i = 0; $i < $howManuOut; $i++) {
                    $remPos = rand(0, count($checked_masks) - 1);
                    unset($checked_masks[$remPos]);
                    $checked_masks = array_values($checked_masks);
                }
            }

            $bestMask = $frame;

            foreach ($checked_masks as $i) {
                $mask = array_fill(0, $width, str_repeat("\0", $width));

                $demerit = 0;

                $blacks = 0;

                $blacks = $this->makeMaskNo($i, $width, $frame, $mask);
                $blacks += $this->writeFormatInformation($width, $mask, $i, $level);
                $blacks = (int) (100 * $blacks / ($width * $width));
                $demerit = (int) ((int) (abs($blacks - 50) / 5) * N4);
                $demerit += $this->evaluateSymbol($width, $mask);

                if ($demerit < $minDemerit) {
                    $minDemerit = $demerit;
                    $bestMask = $mask;
                    $bestMaskNum = $i;
                }
            }

            return $bestMask;
        }

        //----------------------------------------------------------------------
    }


1			<?php
2			/*
3			* PHP QR Code encoder
4			*
5			* Masking
6			*
7			* Based on libqrencode C library distributed under LGPL 2.1
8			* Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <[email protected]>
9			*
10			* PHP QR Code is distributed under LGPL 3
11			* Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
12			*
13			* This library is free software; you can redistribute it and/or
14			* modify it under the terms of the GNU Lesser General Public
15			* License as published by the Free Software Foundation; either
16			* version 3 of the License, or any later version.
17			*
18			* This library is distributed in the hope that it will be useful,
19			* but WITHOUT ANY WARRANTY; without even the implied warranty of
20			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21			* Lesser General Public License for more details.
22			*
23			* You should have received a copy of the GNU Lesser General Public
24			* License along with this library; if not, write to the Free Software
25			* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
26			*/
27
28			define('N1', 3);
29			define('N2', 3);
30			define('N3', 40);
31			define('N4', 10);
32
33			class qrmask
34			{
35			public $runLength = [];
36
37			//----------------------------------------------------------------------
38			public function __construct()
39			{
40			$this->runLength = array_fill(0, QRSPEC_WIDTH_MAX + 1, 0);
41			}
42
43			//----------------------------------------------------------------------
44			public function writeFormatInformation($width, &$frame, $mask, $level)
45			{
46			$blacks = 0;
47			$format = QRspec::getFormatInfo($mask, $level);
48
49			for ($i = 0; $i < 8; $i++) {
50			if ($format & 1) {
51			$blacks += 2;
52			$v = 0x85;
53			} else {
54			$v = 0x84;
55			}
56
57			$frame[8][$width - 1 - $i] = chr($v);
58			if ($i < 6) {
59			$frame[$i][8] = chr($v);
60			} else {
61			$frame[$i + 1][8] = chr($v);
62			}
63			$format = $format >> 1;
64			}
65
66			for ($i = 0; $i < 7; $i++) {
67			if ($format & 1) {
68			$blacks += 2;
69			$v = 0x85;
70			} else {
71			$v = 0x84;
72			}
73
74			$frame[$width - 7 + $i][8] = chr($v);
75			if ($i == 0) {
76			$frame[8][7] = chr($v);
77			} else {
78			$frame[8][6 - $i] = chr($v);
79			}
80
81			$format = $format >> 1;
82			}
83
84			return $blacks;
85			}
86
87			//----------------------------------------------------------------------
88			public function mask0($x, $y)
89			{
90			return ($x + $y) & 1;
91			}
92
93			public function mask1($x, $y)
94			{
95			return $y & 1;
96			}
97
98			public function mask2($x, $y)
99			{
100			return $x % 3;
101			}
102
103			public function mask3($x, $y)
104			{
105			return ($x + $y) % 3;
106			}
107
108			public function mask4($x, $y)
109			{
110			return (((int) ($y / 2)) + ((int) ($x / 3))) & 1;
111			}
112
113			public function mask5($x, $y)
114			{
115			return (($x * $y) & 1) + ($x * $y) % 3;
116			}
117
118			public function mask6($x, $y)
119			{
120			return ((($x * $y) & 1) + ($x * $y) % 3) & 1;
121			}
122
123			public function mask7($x, $y)
124			{
125			return ((($x * $y) % 3) + (($x + $y) & 1)) & 1;
126			}
127
128			//----------------------------------------------------------------------
129			private function generateMaskNo($maskNo, $width, $frame)
130			{
131			$bitMask = array_fill(0, $width, array_fill(0, $width, 0));
132
133			for ($y = 0; $y < $width; $y++) {
134			for ($x = 0; $x < $width; $x++) {
135			if (ord($frame[$y][$x]) & 0x80) {
136			$bitMask[$y][$x] = 0;
137			} else {
138			$maskFunc = call_user_func([$this, 'mask'.$maskNo], $x, $y);
139			$bitMask[$y][$x] = ($maskFunc == 0) ? 1 : 0;
140			}
141			}
142			}
143
144			return $bitMask;
145			}
146
147			//----------------------------------------------------------------------
148			public static function serial($bitFrame)
149			{
150			$codeArr = [];
151
152			foreach ($bitFrame as $line) {
153			$codeArr[] = implode('', $line);
154			}
155
156			return gzcompress(implode("\n", $codeArr), 9);
157			}
158
159			//----------------------------------------------------------------------
160			public static function unserial($code)
161			{
162			$codeArr = [];
163
164			$codeLines = explode("\n", gzuncompress($code));
165			foreach ($codeLines as $line) {
166			$codeArr[] = str_split($line);
167			}
168
169			return $codeArr;
170			}
171
172			//----------------------------------------------------------------------
173			public function makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly = false)
174			{
175			$b = 0;
176			$bitMask = [];
177
178			$fileName = QR_CACHE_DIR.'mask_'.$maskNo.DIRECTORY_SEPARATOR.'mask_'.$width.'_'.$maskNo.'.dat';
179
180			if (QR_CACHEABLE) {
181			if (file_exists($fileName)) {
182			$bitMask = self::unserial(file_get_contents($fileName));
183			} else {
184			$bitMask = $this->generateMaskNo($maskNo, $width, $s);
185			if (!file_exists(QR_CACHE_DIR.'mask_'.$maskNo)) {
186			mkdir(QR_CACHE_DIR.'mask_'.$maskNo);
187			}
188			file_put_contents($fileName, self::serial($bitMask));
189			}
190			} else {
191			$bitMask = $this->generateMaskNo($maskNo, $width, $s);
192			}
193
194			if ($maskGenOnly) {
195			return;
196			}
197
198			$d = $s;
199
200			for ($y = 0; $y < $width; $y++) {
201			for ($x = 0; $x < $width; $x++) {
202			if ($bitMask[$y][$x] == 1) {
203			$d[$y][$x] = chr(ord($s[$y][$x]) ^ (int) $bitMask[$y][$x]);
204			}
205			$b += (int) (ord($d[$y][$x]) & 1);
206			}
207			}
208
209			return $b;
210			}
211
212			//----------------------------------------------------------------------
213			public function makeMask($width, $frame, $maskNo, $level)
214			{
215			$masked = array_fill(0, $width, str_repeat("\0", $width));
216			$this->makeMaskNo($maskNo, $width, $frame, $masked);
217			$this->writeFormatInformation($width, $masked, $maskNo, $level);
218
219			return $masked;
220			}
221
222			//----------------------------------------------------------------------
223			public function calcN1N3($length)
224			{
225			$demerit = 0;
226
227			for ($i = 0; $i < $length; $i++) {
228			if ($this->runLength[$i] >= 5) {
229			$demerit += (N1 + ($this->runLength[$i] - 5));
230			}
231			if ($i & 1) {
232			if (($i >= 3) && ($i < ($length - 2)) && ($this->runLength[$i] % 3 == 0)) {
233			$fact = (int) ($this->runLength[$i] / 3);
234			if (($this->runLength[$i - 2] == $fact) &&
235			($this->runLength[$i - 1] == $fact) &&
236			($this->runLength[$i + 1] == $fact) &&
237			($this->runLength[$i + 2] == $fact)) {
238			if (($this->runLength[$i - 3] < 0) \|\| ($this->runLength[$i - 3] >= (4 * $fact))) {
239			$demerit += N3;
240			} elseif ((($i + 3) >= $length) \|\| ($this->runLength[$i + 3] >= (4 * $fact))) {
241			$demerit += N3;
242			}
243			}
244			}
245			}
246			}
247
248			return $demerit;
249			}
250
251			//----------------------------------------------------------------------
252			public function evaluateSymbol($width, $frame)
253			{
254			$head = 0;
255			$demerit = 0;
256
257			for ($y = 0; $y < $width; $y++) {
258			$head = 0;
259			$this->runLength[0] = 1;
260
261			$frameY = $frame[$y];
262
263			if ($y > 0) {
264			$frameYM = $frame[$y - 1];
265			}
266
267			for ($x = 0; $x < $width; $x++) {
268			if (($x > 0) && ($y > 0)) {
269			$b22 = ord($frameY[$x]) & ord($frameY[$x - 1]) & ord($frameYM[$x]) & ord($frameYM[$x - 1]);
			0 ignored issues – show Comprehensibility Best Practice introduced 2018-11-30 16:26 UTC by Report Bug Copy Issue Report The variable `$frameYM` does not seem to be defined for all execution paths leading up to this point. Loading history...
270			$w22 = ord($frameY[$x]) \| ord($frameY[$x - 1]) \| ord($frameYM[$x]) \| ord($frameYM[$x - 1]);
271
272			if (($b22 \| ($w22 ^ 1)) & 1) {
273			$demerit += N2;
274			}
275			}
276			if (($x == 0) && (ord($frameY[$x]) & 1)) {
277			$this->runLength[0] = -1;
278			$head = 1;
279			$this->runLength[$head] = 1;
280			} elseif ($x > 0) {
281			if ((ord($frameY[$x]) ^ ord($frameY[$x - 1])) & 1) {
282			$head++;
283			$this->runLength[$head] = 1;
284			} else {
285			$this->runLength[$head]++;
286			}
287			}
288			}
289
290			$demerit += $this->calcN1N3($head + 1);
291			}
292
293			for ($x = 0; $x < $width; $x++) {
294			$head = 0;
295			$this->runLength[0] = 1;
296
297			for ($y = 0; $y < $width; $y++) {
298			if ($y == 0 && (ord($frame[$y][$x]) & 1)) {
299			$this->runLength[0] = -1;
300			$head = 1;
301			$this->runLength[$head] = 1;
302			} elseif ($y > 0) {
303			if ((ord($frame[$y][$x]) ^ ord($frame[$y - 1][$x])) & 1) {
304			$head++;
305			$this->runLength[$head] = 1;
306			} else {
307			$this->runLength[$head]++;
308			}
309			}
310			}
311
312			$demerit += $this->calcN1N3($head + 1);
313			}
314
315			return $demerit;
316			}
317
318			//----------------------------------------------------------------------
319			public function mask($width, $frame, $level)
320			{
321			$minDemerit = PHP_INT_MAX;
322			$bestMaskNum = 0;
			0 ignored issues – show Unused Code introduced 2018-11-30 16:26 UTC by Report Bug Copy Issue Report The assignment to `$bestMaskNum` is dead and can be removed. Loading history...
323			$bestMask = [];
			0 ignored issues – show Unused Code introduced 2018-11-30 16:41 UTC by Report Bug Copy Issue Report The assignment to `$bestMask` is dead and can be removed. Loading history...
324
325			$checked_masks = [0, 1, 2, 3, 4, 5, 6, 7];
326
327			if (QR_FIND_FROM_RANDOM !== false) {
			0 ignored issues – show introduced 2018-11-30 16:26 UTC by Report Bug Copy Issue Report The condition `QR_FIND_FROM_RANDOM !== false` is always `false`. Loading history...
328			$howManuOut = 8 - (QR_FIND_FROM_RANDOM % 9);
329			for ($i = 0; $i < $howManuOut; $i++) {
330			$remPos = rand(0, count($checked_masks) - 1);
331			unset($checked_masks[$remPos]);
332			$checked_masks = array_values($checked_masks);
333			}
334			}
335
336			$bestMask = $frame;
337
338			foreach ($checked_masks as $i) {
339			$mask = array_fill(0, $width, str_repeat("\0", $width));
340
341			$demerit = 0;
			0 ignored issues – show Unused Code introduced 2018-11-30 16:26 UTC by Report Bug Copy Issue Report The assignment to `$demerit` is dead and can be removed. Loading history...
342			$blacks = 0;
			0 ignored issues – show Unused Code introduced 2018-11-30 16:26 UTC by Report Bug Copy Issue Report The assignment to `$blacks` is dead and can be removed. Loading history...
343			$blacks = $this->makeMaskNo($i, $width, $frame, $mask);
344			$blacks += $this->writeFormatInformation($width, $mask, $i, $level);
345			$blacks = (int) (100 * $blacks / ($width * $width));
346			$demerit = (int) ((int) (abs($blacks - 50) / 5) * N4);
347			$demerit += $this->evaluateSymbol($width, $mask);
348
349			if ($demerit < $minDemerit) {
350			$minDemerit = $demerit;
351			$bestMask = $mask;
352			$bestMaskNum = $i;
353			}
354			}
355
356			return $bestMask;
357			}
358
359			//----------------------------------------------------------------------
360			}
361

aepnat / simpuskesmas

qrmask::makeMaskNo() B last analyzed 2019-02-14 14:22 UTC

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qrmask::makeMaskNo() B
last analyzed 2019-02-14 14:22 UTC