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<?php |
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namespace libphonenumber\prefixmapper; |
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use libphonenumber\PhoneNumber; |
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/** |
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* A helper class doing file handling and lookup of phone number prefix mappings. |
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* |
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* @package libphonenumber\prefixmapper |
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*/ |
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class PrefixFileReader |
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{ |
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protected $phonePrefixDataDirectory; |
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/** |
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* The mappingFileProvider knows for which combination of countryCallingCode and language a phone |
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* prefix mapping file is available in the file system, so that a file can be loaded when needed. |
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* @var MappingFileProvider |
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*/ |
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protected $mappingFileProvider; |
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/** |
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* A mapping from countryCallingCode_lang to the corresponding phone prefix map that has been |
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* loaded. |
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* @var array |
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*/ |
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protected $availablePhonePrefixMaps = array(); |
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public function __construct($phonePrefixDataDirectory) |
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{ |
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$this->phonePrefixDataDirectory = $phonePrefixDataDirectory; |
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$this->loadMappingFileProvider(); |
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} |
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253 |
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protected function loadMappingFileProvider() |
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{ |
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$mapPath = $this->phonePrefixDataDirectory . DIRECTORY_SEPARATOR . "Map.php"; |
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if (!file_exists($mapPath)) { |
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throw new \InvalidArgumentException("Invalid data directory"); |
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} |
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$map = require $mapPath; |
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$this->mappingFileProvider = new MappingFileProvider($map); |
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} |
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/** |
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* @param $prefixMapKey |
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* @param $language |
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* @param $script |
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* @param $region |
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* @return PhonePrefixMap|null |
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*/ |
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public function getPhonePrefixDescriptions($prefixMapKey, $language, $script, $region) |
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{ |
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$fileName = $this->mappingFileProvider->getFileName($prefixMapKey, $language, $script, $region); |
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if (strlen($fileName) == 0) { |
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return null; |
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} |
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if (!isset($this->availablePhonePrefixMaps[$fileName])) { |
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$this->loadPhonePrefixMapFromFile($fileName); |
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} |
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return $this->availablePhonePrefixMaps[$fileName]; |
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} |
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protected function loadPhonePrefixMapFromFile($fileName) |
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{ |
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$path = $this->phonePrefixDataDirectory . DIRECTORY_SEPARATOR . $fileName; |
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if (!file_exists($path)) { |
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throw new \InvalidArgumentException("Data does not exist"); |
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} |
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$map = require $path; |
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$areaCodeMap = new PhonePrefixMap($map); |
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$this->availablePhonePrefixMaps[$fileName] = $areaCodeMap; |
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} |
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public function mayFallBackToEnglish($language) |
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{ |
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// Don't fall back to English if the requested language is among the following: |
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// - Chinese |
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// - Japanese |
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// - Korean |
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return ($language != 'zh' && $language != 'ja' && $language != 'ko'); |
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} |
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/** |
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* Returns a text description in the given language for the given phone number. |
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* |
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* @param PhoneNumber $number the phone number for which we want to get a text description |
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* @param string $language two-letter lowercase ISO language codes as defined by ISO 639-1 |
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* @param string $script four-letter titlecase (the first letter is uppercase and the rest of the letters |
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* are lowercase) ISO script codes as defined in ISO 15924 |
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* @param string $region two-letter uppercase ISO country codes as defined by ISO 3166-1 |
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* @return string a text description in the given language for the given phone number, or an empty |
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* string if a description is not available |
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*/ |
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public function getDescriptionForNumber(PhoneNumber $number, $language, $script, $region) |
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{ |
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$countryCallingCode = $number->getCountryCode(); |
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// As the NANPA data is split into multiple files covering 3-digit areas, use a phone number |
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// prefix of 4 digits for NANPA instead, e.g. 1650. |
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if ($countryCallingCode === 1) { |
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$phonePrefix = (1000 + intval($number->getNationalNumber() / 10000000)); |
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} elseif ($countryCallingCode === 86) { |
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// Split China into multiple files to reduce PHP memory usage |
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// @see https://github.com/giggsey/libphonenumber-for-php/issues/44 |
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$phonePrefix = '86' . substr($number->getNationalNumber(), 0, 3); |
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} else { |
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$phonePrefix = $countryCallingCode; |
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} |
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$phonePrefixDescriptions = $this->getPhonePrefixDescriptions($phonePrefix, $language, $script, $region); |
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$description = ($phonePrefixDescriptions !== null) ? $phonePrefixDescriptions->lookup($number) : null; |
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// When a location is not available in the requested language, fall back to English. |
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if (($description === null || strlen($description) === 0) && $this->mayFallBackToEnglish($language)) { |
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$defaultMap = $this->getPhonePrefixDescriptions($phonePrefix, "en", "", ""); |
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if ($defaultMap === null) { |
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return ""; |
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} |
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$description = $defaultMap->lookup($number); |
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} |
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return ($description !== null) ? $description : ""; |
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} |
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} |
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giggsey /
libphonenumber-for-php
