1 files changed, 165 insertions, 0 deletions
diff --git a/vendor/chillerlan/php-qrcode/src/Data/ECI.php b/vendor/chillerlan/php-qrcode/src/Data/ECI.php
new file mode 100644
index 000000000..1aacd0b71
--- /dev/null
+++ b/vendor/chillerlan/php-qrcode/src/Data/ECI.php
@@ -0,0 +1,165 @@
+<?php
+/**
+ * Class ECI
+ *
+ * @created      20.11.2020
+ * @author       smiley <smiley@chillerlan.net>
+ * @copyright    2020 smiley
+ * @license      MIT
+ */
+
+namespace chillerlan\QRCode\Data;
+
+use chillerlan\QRCode\Common\{BitBuffer, ECICharset, Mode};
+use function mb_convert_encoding, mb_detect_encoding, mb_internal_encoding, sprintf;
+
+/**
+ * Adds an ECI Designator
+ *
+ * ISO/IEC 18004:2000 8.4.1.1
+ *
+ * Please note that you have to take care for the correct data encoding when adding with QRCode::add*Segment()
+ */
+final class ECI extends QRDataModeAbstract{
+
+	/**
+	 * @inheritDoc
+	 */
+	public const DATAMODE = Mode::ECI;
+
+	/**
+	 * The current ECI encoding id
+	 */
+	private int $encoding;
+
+	/**
+	 * @inheritDoc
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 * @noinspection PhpMissingParentConstructorInspection
+	 */
+	public function __construct(int $encoding){
+
+		if($encoding < 0 || $encoding > 999999){
+			throw new QRCodeDataException(sprintf('invalid encoding id: "%s"', $encoding));
+		}
+
+		$this->encoding = $encoding;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getLengthInBits():int{
+
+		if($this->encoding < 128){
+			return 8;
+		}
+
+		if($this->encoding < 16384){
+			return 16;
+		}
+
+		return 24;
+	}
+
+	/**
+	 * Writes an ECI designator to the bitbuffer
+	 *
+	 * @inheritDoc
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 */
+	public function write(BitBuffer $bitBuffer, int $versionNumber):QRDataModeInterface{
+		$bitBuffer->put(self::DATAMODE, 4);
+
+		if($this->encoding < 128){
+			$bitBuffer->put($this->encoding, 8);
+		}
+		elseif($this->encoding < 16384){
+			$bitBuffer->put(($this->encoding | 0x8000), 16);
+		}
+		elseif($this->encoding < 1000000){
+			$bitBuffer->put(($this->encoding | 0xC00000), 24);
+		}
+		else{
+			throw new QRCodeDataException('invalid ECI ID');
+		}
+
+		return $this;
+	}
+
+	/**
+	 * Reads and parses the value of an ECI designator
+	 *
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 */
+	public static function parseValue(BitBuffer $bitBuffer):ECICharset{
+		$firstByte = $bitBuffer->read(8);
+
+		// just one byte
+		if(($firstByte & 0b10000000) === 0){
+			$id = ($firstByte & 0b01111111);
+		}
+		// two bytes
+		elseif(($firstByte & 0b11000000) === 0b10000000){
+			$id = ((($firstByte & 0b00111111) << 8) | $bitBuffer->read(8));
+		}
+		// three bytes
+		elseif(($firstByte & 0b11100000) === 0b11000000){
+			$id = ((($firstByte & 0b00011111) << 16) | $bitBuffer->read(16));
+		}
+		else{
+			throw new QRCodeDataException(sprintf('error decoding ECI value first byte: %08b', $firstByte));// @codeCoverageIgnore
+		}
+
+		return new ECICharset($id);
+	}
+
+	/**
+	 * @codeCoverageIgnore Unused, but required as per interface
+	 */
+	public static function validateString(string $string):bool{
+		return true;
+	}
+
+	/**
+	 * Reads and decodes the ECI designator including the following byte sequence
+	 *
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 */
+	public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):string{
+		$eciCharset = self::parseValue($bitBuffer);
+		$nextMode   = $bitBuffer->read(4);
+		$data       = self::decodeModeSegment($nextMode, $bitBuffer, $versionNumber);
+		$encoding   = $eciCharset->getName();
+
+		if($encoding === null){
+			// The spec isn't clear on this mode; see
+			// section 6.4.5: it does not say which encoding to assuming
+			// upon decoding. I have seen ISO-8859-1 used as well as
+			// Shift_JIS -- without anything like an ECI designator to
+			// give a hint.
+			$encoding = mb_detect_encoding($data, ['ISO-8859-1', 'Windows-1252', 'SJIS', 'UTF-8'], true);
+
+			if($encoding === false){
+				throw new QRCodeDataException('could not determine encoding in ECI mode'); // @codeCoverageIgnore
+			}
+		}
+
+		return mb_convert_encoding($data, mb_internal_encoding(), $encoding);
+	}
+
+	/**
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 */
+	private static function decodeModeSegment(int $mode, BitBuffer $bitBuffer, int $versionNumber):string{
+
+		switch(true){
+			case $mode === Mode::NUMBER:   return Number::decodeSegment($bitBuffer, $versionNumber);
+			case $mode === Mode::ALPHANUM: return AlphaNum::decodeSegment($bitBuffer, $versionNumber);
+			case $mode === Mode::BYTE:     return Byte::decodeSegment($bitBuffer, $versionNumber);
+		}
+
+		throw new QRCodeDataException(sprintf('ECI designator followed by invalid mode: "%04b"', $mode));
+	}
+
+}