69 lines
2.3 KiB
Kotlin
69 lines
2.3 KiB
Kotlin
package org.mariotaku.ktextension
|
|
|
|
import android.os.Build
|
|
import java.util.*
|
|
|
|
/**
|
|
* Created by mariotaku on 16/8/15.
|
|
*/
|
|
|
|
/**
|
|
* Modified from:
|
|
* https://github.com/apache/cordova-plugin-globalization/blob/master/src/android/Globalization.java
|
|
|
|
* Returns a well-formed ITEF BCP 47 language tag representing this locale string
|
|
* identifier for the client's current locale
|
|
|
|
* @return String: The BCP 47 language tag for the current locale
|
|
*/
|
|
val Locale.bcp47Tag: String
|
|
get() {
|
|
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
|
|
return toLanguageTag()
|
|
}
|
|
|
|
// we will use a dash as per BCP 47
|
|
val SEP = '-'
|
|
var language = language
|
|
var country = country
|
|
var variant = variant
|
|
|
|
// special case for Norwegian Nynorsk since "NY" cannot be a variant as per BCP 47
|
|
// this goes before the string matching since "NY" wont pass the variant checks
|
|
if (language == "no" && country == "NO" && variant == "NY") {
|
|
language = "nn"
|
|
country = "NO"
|
|
variant = ""
|
|
}
|
|
|
|
if (language.isEmpty() || !language.matches("\\p{Alpha}{2,8}".toRegex())) {
|
|
language = "und" // Follow the Locale#toLanguageTag() implementation
|
|
// which says to return "und" for Undetermined
|
|
} else if (language == "iw") {
|
|
language = "he" // correct deprecated "Hebrew"
|
|
} else if (language == "in") {
|
|
language = "id" // correct deprecated "Indonesian"
|
|
} else if (language == "ji") {
|
|
language = "yi" // correct deprecated "Yiddish"
|
|
}
|
|
|
|
// ensure valid country code, if not well formed, it's omitted
|
|
if (!country.matches("\\p{Alpha}{2}|\\p{Digit}{3}".toRegex())) {
|
|
country = ""
|
|
}
|
|
|
|
// variant subtags that begin with a letter must be at least 5 characters long
|
|
if (!variant.matches("\\p{Alnum}{5,8}|\\p{Digit}\\p{Alnum}{3}".toRegex())) {
|
|
variant = ""
|
|
}
|
|
|
|
val bcp47Tag = StringBuilder(language)
|
|
if (country.isNotEmpty()) {
|
|
bcp47Tag.append(SEP).append(country)
|
|
}
|
|
if (variant.isNotEmpty()) {
|
|
bcp47Tag.append(SEP).append(variant)
|
|
}
|
|
|
|
return bcp47Tag.toString()
|
|
} |