159 lines
4.4 KiB
PHP
159 lines
4.4 KiB
PHP
<?php
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namespace Zxing\Common;
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/**
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* Encapsulates a Character Set ECI, according to "Extended Channel
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* Interpretations" 5.3.1.1 of ISO 18004.
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*/
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final class CharacterSetECI
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{
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/**#@+
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* Character set constants.
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*/
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const CP437 = 0;
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const ISO8859_1 = 1;
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const ISO8859_2 = 4;
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const ISO8859_3 = 5;
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const ISO8859_4 = 6;
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const ISO8859_5 = 7;
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const ISO8859_6 = 8;
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const ISO8859_7 = 9;
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const ISO8859_8 = 10;
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const ISO8859_9 = 11;
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const ISO8859_10 = 12;
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const ISO8859_11 = 13;
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const ISO8859_12 = 14;
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const ISO8859_13 = 15;
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const ISO8859_14 = 16;
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const ISO8859_15 = 17;
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const ISO8859_16 = 18;
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const SJIS = 20;
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const CP1250 = 21;
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const CP1251 = 22;
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const CP1252 = 23;
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const CP1256 = 24;
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const UNICODE_BIG_UNMARKED = 25;
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const UTF8 = 26;
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const ASCII = 27;
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const BIG5 = 28;
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const GB18030 = 29;
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const EUC_KR = 30;
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/**
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* Map between character names and their ECI values.
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*
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* @var array
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*/
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protected static $nameToEci = [
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'ISO-8859-1' => self::ISO8859_1,
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'ISO-8859-2' => self::ISO8859_2,
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'ISO-8859-3' => self::ISO8859_3,
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'ISO-8859-4' => self::ISO8859_4,
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'ISO-8859-5' => self::ISO8859_5,
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'ISO-8859-6' => self::ISO8859_6,
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'ISO-8859-7' => self::ISO8859_7,
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'ISO-8859-8' => self::ISO8859_8,
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'ISO-8859-9' => self::ISO8859_9,
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'ISO-8859-10' => self::ISO8859_10,
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'ISO-8859-11' => self::ISO8859_11,
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'ISO-8859-12' => self::ISO8859_12,
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'ISO-8859-13' => self::ISO8859_13,
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'ISO-8859-14' => self::ISO8859_14,
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'ISO-8859-15' => self::ISO8859_15,
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'ISO-8859-16' => self::ISO8859_16,
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'SHIFT-JIS' => self::SJIS,
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'WINDOWS-1250' => self::CP1250,
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'WINDOWS-1251' => self::CP1251,
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'WINDOWS-1252' => self::CP1252,
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'WINDOWS-1256' => self::CP1256,
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'UTF-16BE' => self::UNICODE_BIG_UNMARKED,
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'UTF-8' => self::UTF8,
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'ASCII' => self::ASCII,
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'GBK' => self::GB18030,
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'EUC-KR' => self::EUC_KR,
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];
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/**#@-*/
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/**
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* Additional possible values for character sets.
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*
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* @var array
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*/
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protected static $additionalValues = [
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self::CP437 => 2,
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self::ASCII => 170,
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];
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private static $name = null;
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/**
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* Gets character set ECI by value.
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*
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* @param string $name
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*
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* @return CharacterSetEci|null
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*/
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public static function getCharacterSetECIByValue($value)
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{
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if ($value < 0 || $value >= 900) {
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throw new \InvalidArgumentException('Value must be between 0 and 900');
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}
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if (false !== ($key = array_search($value, self::$additionalValues))) {
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$value = $key;
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}
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array_search($value, self::$nameToEci);
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try {
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self::setName($value);
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return new self($value);
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} catch (\UnexpectedValueException $e) {
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return null;
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}
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}
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private static function setName($value)
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{
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foreach (self::$nameToEci as $name => $key) {
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if ($key == $value) {
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self::$name = $name;
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return true;
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}
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}
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if (self::$name == null) {
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foreach (self::$additionalValues as $name => $key) {
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if ($key == $value) {
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self::$name = $name;
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return true;
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}
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}
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}
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}
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/**
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* Gets character set ECI name.
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*
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* @return character set ECI name|null
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*/
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public static function name()
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{
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return self::$name;
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}
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/**
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* Gets character set ECI by name.
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*
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* @param string $name
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*
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* @return CharacterSetEci|null
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*/
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public static function getCharacterSetECIByName($name)
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{
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$name = strtoupper($name);
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if (isset(self::$nameToEci[$name])) {
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return new self(self::$nameToEci[$name]);
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}
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return null;
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}
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}
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