case_class_server/vendor/khanamiryan/qrcode-detector-decoder/lib/Common/BitMatrix.php

<?php

namespace Zxing\Common;

final class BitMatrix
{
	private $width;
	private $height;
	private $rowSize;
	/**
  * @var mixed|int[]
  */
 private $bits;

	public function __construct($width, $height = false, $rowSize = false, $bits = false)
	{
		if (!$height) {
			$height = $width;
		}
		if (!$rowSize) {
			$rowSize = (int)(($width + 31) / 32);
		}
		if (!$bits) {
			$bits = fill_array(0, $rowSize * $height, 0);
			//            [];//new int[rowSize * height];
		}
		$this->width = $width;
		$this->height = $height;
		$this->rowSize = $rowSize;
		$this->bits = $bits;
	}

	public static function parse($stringRepresentation, $setString, $unsetString)
	{
		if (!$stringRepresentation) {
			throw new \InvalidArgumentException();
		}
		$bits = [];
		$bitsPos = 0;
		$rowStartPos = 0;
		$rowLength = -1;
		$nRows = 0;
		$pos = 0;
		while ($pos < strlen((string) $stringRepresentation)) {
			if ($stringRepresentation[$pos] == '\n' ||
				$stringRepresentation->{$pos} == '\r') {
				if ($bitsPos > $rowStartPos) {
					if ($rowLength == -1) {
						$rowLength = $bitsPos - $rowStartPos;
					} elseif ($bitsPos - $rowStartPos != $rowLength) {
						throw new \InvalidArgumentException("row lengths do not match");
					}
					$rowStartPos = $bitsPos;
					$nRows++;
				}
				$pos++;
			} elseif (substr((string) $stringRepresentation, $pos, strlen((string) $setString)) == $setString) {
				$pos += strlen((string) $setString);
				$bits[$bitsPos] = true;
				$bitsPos++;
			} elseif (substr((string) $stringRepresentation, $pos + strlen((string) $unsetString)) == $unsetString) {
				$pos += strlen((string) $unsetString);
				$bits[$bitsPos] = false;
				$bitsPos++;
			} else {
				throw new \InvalidArgumentException(
					"illegal character encountered: " . substr((string) $stringRepresentation, $pos)
				);
			}
		}

		// no EOL at end?
		if ($bitsPos > $rowStartPos) {
			if ($rowLength == -1) {
				$rowLength = $bitsPos - $rowStartPos;
			} elseif ($bitsPos - $rowStartPos != $rowLength) {
				throw new \InvalidArgumentException("row lengths do not match");
			}
			$nRows++;
		}

		$matrix = new BitMatrix($rowLength, $nRows);
		for ($i = 0; $i < $bitsPos; $i++) {
			if ($bits[$i]) {
				$matrix->set($i % $rowLength, $i / $rowLength);
			}
		}

		return $matrix;
	}

	/**
	 * <p>Sets the given bit to true.</p>
	 *
	 * @param $x ;  The horizontal component (i.e. which column)
	 * @param $y ;   The vertical component (i.e. which row)
	 */
	public function set($x, $y): void
	{
		$offset = (int)($y * $this->rowSize + ($x / 32));
		if (!isset($this->bits[$offset])) {
			$this->bits[$offset] = 0;
		}
		//$this->bits[$offset] = $this->bits[$offset];

		//  if($this->bits[$offset]>200748364){
		//$this->bits= 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|= intval32bits(1 << ($x & 0x1f));
		$bob = $this->bits[$offset];
		$bob |= 1 << ($x & 0x1f);
		$this->bits[$offset] |= ($bob);
		//$this->bits[$offset] = intval32bits($this->bits[$offset]);

		//}
//16777216
	}

	public function _unset($x, $y): void
	{//было unset, php не позволяет использовать unset
		$offset = (int)($y * $this->rowSize + ($x / 32));
		$this->bits[$offset] &= ~(1 << ($x & 0x1f));
	}

	/**1 << (249 & 0x1f)
	 * <p>Flips the given bit.</p>
	 *
	 * @param $x ;  The horizontal component (i.e. which column)
	 * @param $y ;  The vertical component (i.e. which row)
	 */
	public function flip($x, $y): void
	{
		$offset = $y * $this->rowSize + (int)($x / 32);

		$this->bits[$offset] = ($this->bits[$offset] ^ (1 << ($x & 0x1f)));
	}

	/**
	 * Exclusive-or (XOR): Flip the bit in this {@code BitMatrix} if the corresponding
	 * mask bit is set.
	 *
	 * @param $mask ;  XOR mask
	 */
	public function _xor($mask)
	{//было xor, php не позволяет использовать xor
		if ($this->width != $mask->getWidth() || $this->height != $mask->getHeight()
			|| $this->rowSize != $mask->getRowSize()) {
			throw new \InvalidArgumentException("input matrix dimensions do not match");
		}
		$rowArray = new BitArray($this->width / 32 + 1);
		for ($y = 0; $y < $this->height; $y++) {
			$offset = $y * $this->rowSize;
			$row = $mask->getRow($y, $rowArray)->getBitArray();
			for ($x = 0; $x < $this->rowSize; $x++) {
				$this->bits[$offset + $x] ^= $row[$x];
			}
		}
	}

	/**
	 * Clears all bits (sets to false).
	 */
	public function clear(): void
	{
		$max = is_countable($this->bits) ? count($this->bits) : 0;
		for ($i = 0; $i < $max; $i++) {
			$this->bits[$i] = 0;
		}
	}

	/**
	 * <p>Sets a square region of the bit matrix to true.</p>
	 *
	 * @param $left   ;  The horizontal position to begin at (inclusive)
	 * @param $top    ;  The vertical position to begin at (inclusive)
	 * @param $width  ;  The width of the region
	 * @param $height ;  The height of the region
	 */
	public function setRegion($left, $top, $width, $height)
	{
		if ($top < 0 || $left < 0) {
			throw new \InvalidArgumentException("Left and top must be nonnegative");
		}
		if ($height < 1 || $width < 1) {
			throw new \InvalidArgumentException("Height and width must be at least 1");
		}
		$right = $left + $width;
		$bottom = $top + $height;
		if ($bottom > $this->height || $right > $this->width) { //> this.height || right > this.width
			throw new \InvalidArgumentException("The region must fit inside the matrix");
		}
		for ($y = $top; $y < $bottom; $y++) {
			$offset = $y * $this->rowSize;
			for ($x = $left; $x < $right; $x++) {
				$this->bits[$offset + (int)($x / 32)] = ($this->bits[$offset + (int)($x / 32)] |= 1 << ($x & 0x1f));
			}
		}
	}

	/**
	 * Modifies this {@code BitMatrix} to represent the same but rotated 180 degrees
	 */
	public function rotate180(): void
	{
		$width = $this->getWidth();
		$height = $this->getHeight();
		$topRow = new BitArray($width);
		$bottomRow = new BitArray($width);
		for ($i = 0; $i < ($height + 1) / 2; $i++) {
			$topRow = $this->getRow($i, $topRow);
			$bottomRow = $this->getRow($height - 1 - $i, $bottomRow);
			$topRow->reverse();
			$bottomRow->reverse();
			$this->setRow($i, $bottomRow);
			$this->setRow($height - 1 - $i, $topRow);
		}
	}

	/**
	 * @return float The width of the matrix
	 */
	public function getWidth()
	{
		return $this->width;
	}

	/**
	 * A fast method to retrieve one row of data from the matrix as a BitArray.
	 *
	 * @param $y   ;  The row to retrieve
	 * @param $row ;  An optional caller-allocated BitArray, will be allocated if null or too small
	 *
	 * @return BitArray The resulting BitArray - this reference should always be used even when passing
	 *         your own row
	 */
	public function getRow($y, $row)
	{
		if ($row == null || $row->getSize() < $this->width) {
			$row = new BitArray($this->width);
		} else {
			$row->clear();
		}
		$offset = $y * $this->rowSize;
		for ($x = 0; $x < $this->rowSize; $x++) {
			$row->setBulk($x * 32, $this->bits[$offset + $x]);
		}

		return $row;
	}

	/**
	 * @param $y   ;  row to set
	 * @param $row ;  {@link BitArray} to copy from
	 */
	public function setRow($y, $row): void
	{
		$this->bits = arraycopy($row->getBitArray(), 0, $this->bits, $y * $this->rowSize, $this->rowSize);
	}

	/**
	 * This is useful in detecting the enclosing rectangle of a 'pure' barcode.
	 *
	 * @return {@code left,top,width,height} enclosing rectangle of all 1 bits, or null if it is all white
	 */
	public function getEnclosingRectangle()
	{
		$left = $this->width;
		$top = $this->height;
		$right = -1;
		$bottom = -1;

		for ($y = 0; $y < $this->height; $y++) {
			for ($x32 = 0; $x32 < $this->rowSize; $x32++) {
				$theBits = $this->bits[$y * $this->rowSize + $x32];
				if ($theBits != 0) {
					if ($y < $top) {
						$top = $y;
					}
					if ($y > $bottom) {
						$bottom = $y;
					}
					if ($x32 * 32 < $left) {
						$bit = 0;
						while (($theBits << (31 - $bit)) == 0) {
							$bit++;
						}
						if (($x32 * 32 + $bit) < $left) {
							$left = $x32 * 32 + $bit;
						}
					}
					if ($x32 * 32 + 31 > $right) {
						$bit = 31;
						while ((sdvig3($theBits, $bit)) == 0) {//>>>
							$bit--;
						}
						if (($x32 * 32 + $bit) > $right) {
							$right = $x32 * 32 + $bit;
						}
					}
				}
			}
		}

		$width = $right - $left;
		$height = $bottom - $top;

		if ($width < 0 || $height < 0) {
			return null;
		}

		return [$left, $top, $width, $height];
	}

	/**
	 * This is useful in detecting a corner of a 'pure' barcode.
	 *
	 * @return {@code x,y} coordinate of top-left-most 1 bit, or null if it is all white
	 */
	public function getTopLeftOnBit()
	{
		$bitsOffset = 0;
		while ($bitsOffset < (is_countable($this->bits) ? count($this->bits) : 0) && $this->bits[$bitsOffset] == 0) {
			$bitsOffset++;
		}
		if ($bitsOffset == (is_countable($this->bits) ? count($this->bits) : 0)) {
			return null;
		}
		$y = $bitsOffset / $this->rowSize;
		$x = ($bitsOffset % $this->rowSize) * 32;

		$theBits = $this->bits[$bitsOffset];
		$bit = 0;
		while (($theBits << (31 - $bit)) == 0) {
			$bit++;
		}
		$x += $bit;

		return [$x, $y];
	}

	public function getBottomRightOnBit()
	{
		$bitsOffset = (is_countable($this->bits) ? count($this->bits) : 0) - 1;
		while ($bitsOffset >= 0 && $this->bits[$bitsOffset] == 0) {
			$bitsOffset--;
		}
		if ($bitsOffset < 0) {
			return null;
		}

		$y = $bitsOffset / $this->rowSize;
		$x = ($bitsOffset % $this->rowSize) * 32;

		$theBits = $this->bits[$bitsOffset];
		$bit = 31;
		while ((sdvig3($theBits, $bit)) == 0) {//>>>
			$bit--;
		}
		$x += $bit;

		return [$x, $y];
	}

	/**
	 * @return float The height of the matrix
	 */
	public function getHeight()
	{
		return $this->height;
	}

	/**
	 * @return int The row size of the matrix
	 */
	public function getRowSize()
	{
		return $this->rowSize;
	}

	public function equals($o)
	{
		if (!($o instanceof BitMatrix)) {
			return false;
		}
		$other = $o;

		return $this->width == $other->width
			&& $this->height == $other->height
			&& $this->rowSize == $other->rowSize
			&& $this->bits === $other->bits;
	}

	//@Override

	public function hashCode()
	{
		$hash = $this->width;
		$hash = 31 * $hash + $this->width;
		$hash = 31 * $hash + $this->height;
		$hash = 31 * $hash + $this->rowSize;
		$hash = 31 * $hash + hashCode($this->bits);

		return $hash;
	}

	//@Override

	public function toString($setString = '', $unsetString = '', $lineSeparator = '')
	{
		if (!$setString || !$unsetString) {
			return (string)'X ' . '  ';
		}
		if ($lineSeparator && $lineSeparator !== "\n") {
			return $this->toString_($setString, $unsetString, $lineSeparator);
		}

		return (string)($setString . $unsetString . "\n");
	}

	public function toString_($setString, $unsetString, $lineSeparator)
	{
		//$result = new StringBuilder(height * (width + 1));
		$result = '';
		for ($y = 0; $y < $this->height; $y++) {
			for ($x = 0; $x < $this->width; $x++) {
				$result .= ($this->get($x, $y) ? $setString : $unsetString);
			}
			$result .= ($lineSeparator);
		}

		return (string)$result;
	}

	/**
	 * @deprecated call {@link #toString(String,String)} only, which uses \n line separator always
	 */
	// @Deprecated
	/**
	 * <p>Gets the requested bit, where true means black.</p>
	 *
	 * @param $x ;  The horizontal component (i.e. which column)
	 * @param $y ;  The vertical component (i.e. which row)
	 *
	 * @return value of given bit in matrix
	 */
	public function get($x, $y)
	{
		$offset = (int)($y * $this->rowSize + ($x / 32));
		if (!isset($this->bits[$offset])) {
			$this->bits[$offset] = 0;
		}

		// return (($this->bits[$offset] >> ($x & 0x1f)) & 1) != 0;
		return (uRShift($this->bits[$offset], ($x & 0x1f)) & 1) != 0;//было >>> вместо >>, не знаю как эмулировать беззнаковый сдвиг
	}

	//  @Override

	public function _clone(): \Zxing\Common\BitMatrix
	{
		return new BitMatrix($this->width, $this->height, $this->rowSize, $this->bits);
	}
}