118 lines
3.8 KiB
PHP
Executable File
118 lines
3.8 KiB
PHP
Executable File
<?php
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/*
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* Copyright 2007 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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namespace Zxing\Qrcode\Decoder;
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/**
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* <p>See ISO 18004:2006, 6.4.1, Tables 2 and 3. This enum encapsulates the various modes in which
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* data can be encoded to bits in the QR code standard.</p>
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*
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* @author Sean Owen
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*/
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class Mode {
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static $TERMINATOR;
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static $NUMERIC;
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static $ALPHANUMERIC;
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static $STRUCTURED_APPEND;
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static $BYTE;
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static $ECI;
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static $KANJI;
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static $FNC1_FIRST_POSITION;
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static $FNC1_SECOND_POSITION;
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static $HANZI;
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private $characterCountBitsForVersions;
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private $bits;
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function __construct($characterCountBitsForVersions, $bits) {
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$this->characterCountBitsForVersions = $characterCountBitsForVersions;
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$this->bits = $bits;
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}
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static function Init()
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{
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self::$TERMINATOR = new Mode(array(0, 0, 0), 0x00); // Not really a mode...
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self::$NUMERIC = new Mode(array(10, 12, 14), 0x01);
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self::$ALPHANUMERIC = new Mode(array(9, 11, 13), 0x02);
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self::$STRUCTURED_APPEND = new Mode(array(0, 0, 0), 0x03); // Not supported
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self::$BYTE = new Mode(array(8, 16, 16), 0x04);
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self::$ECI = new Mode(array(0, 0, 0), 0x07); // character counts don't apply
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self::$KANJI = new Mode(array(8, 10, 12), 0x08);
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self::$FNC1_FIRST_POSITION = new Mode(array(0, 0, 0), 0x05);
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self::$FNC1_SECOND_POSITION =new Mode(array(0, 0, 0), 0x09);
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/** See GBT 18284-2000; "Hanzi" is a transliteration of this mode name. */
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self::$HANZI = new Mode(array(8, 10, 12), 0x0D);
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}
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/**
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* @param bits four bits encoding a QR Code data mode
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* @return Mode encoded by these bits
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* @throws IllegalArgumentException if bits do not correspond to a known mode
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*/
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public static function forBits($bits) {
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switch ($bits) {
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case 0x0:
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return self::$TERMINATOR;
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case 0x1:
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return self::$NUMERIC;
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case 0x2:
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return self::$ALPHANUMERIC;
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case 0x3:
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return self::$STRUCTURED_APPEND;
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case 0x4:
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return self::$BYTE;
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case 0x5:
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return self::$FNC1_FIRST_POSITION;
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case 0x7:
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return self::$ECI;
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case 0x8:
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return self::$KANJI;
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case 0x9:
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return self::$FNC1_SECOND_POSITION;
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case 0xD:
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// 0xD is defined in GBT 18284-2000, may not be supported in foreign country
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return self::$HANZI;
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default:
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throw new \InvalidArgumentException();
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}
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}
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/**
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* @param version version in question
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* @return number of bits used, in this QR Code symbol {@link Version}, to encode the
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* count of characters that will follow encoded in this Mode
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*/
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public function getCharacterCountBits($version) {
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$number = $version->getVersionNumber();
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$offset = 0;
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if ($number <= 9) {
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$offset = 0;
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} else if ($number <= 26) {
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$offset = 1;
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} else {
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$offset = 2;
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}
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return $this->characterCountBitsForVersions[$offset];
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}
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public function getBits() {
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return $this->bits;
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}
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}
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Mode::Init(); |