PHP's i18n_loc_get_default in TypeScript

How to use

Install via yarn add locutus and import: import { i18n_loc_get_default } from 'locutus/php/i18n/i18n_loc_get_default'.

Or with CommonJS: const { i18n_loc_get_default } = require('locutus/php/i18n/i18n_loc_get_default')

Use a bundler that supports tree-shaking so you only ship the functions you actually use. Vite, webpack, Rollup, and Parcel all handle this. For server-side use this is less of a concern.

Examples

These examples are extracted from test cases that automatically verify our functions against their native counterparts.

#	code	expected result
1	i18n_loc_get_default()	'en_US_POSIX'
2	i18n_loc_set_default('pt_PT') i18n_loc_get_default()	'pt_PT'

Notes

• Renamed in PHP6 from locale_get_default(). Not listed yet at php.net. List of locales at https://demo.icu-project.org/icu-bin/locexp To be usable with sort() if it is passed the SORT_LOCALE_STRING sorting flag: https://php.net/manual/en/function.sort.php

Dependencies

This function uses the following Locutus functions:

• _phpRuntimeState (php/_helpers)

Here's what our current TypeScript equivalent to PHP's i18n_loc_get_default looks like.

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import { ensurePhpRuntimeState } from '../_helpers/_phpRuntimeState.ts'

export function i18n_loc_get_default(): string {
  //  discuss at: https://locutus.io/php/i18n_loc_get_default/
  // original by: Brett Zamir (https://brett-zamir.me)
  //      note 1: Renamed in PHP6 from locale_get_default(). Not listed yet at php.net.
  //      note 1: List of locales at <https://demo.icu-project.org/icu-bin/locexp>
  //      note 1: To be usable with sort() if it is passed the `SORT_LOCALE_STRING`
  //      note 1: sorting flag: https://php.net/manual/en/function.sort.php
  //   example 1: i18n_loc_get_default()
  //   returns 1: 'en_US_POSIX'
  //   example 2: i18n_loc_set_default('pt_PT')
  //   example 2: i18n_loc_get_default()
  //   returns 2: 'pt_PT'

  const runtime = ensurePhpRuntimeState()
  return runtime.locale_default ?? 'en_US_POSIX'
}

import { ensurePhpRuntimeState } from '../_helpers/_phpRuntimeState.ts'

export function i18n_loc_get_default() {
  //  discuss at: https://locutus.io/php/i18n_loc_get_default/
  // original by: Brett Zamir (https://brett-zamir.me)
  //      note 1: Renamed in PHP6 from locale_get_default(). Not listed yet at php.net.
  //      note 1: List of locales at <https://demo.icu-project.org/icu-bin/locexp>
  //      note 1: To be usable with sort() if it is passed the `SORT_LOCALE_STRING`
  //      note 1: sorting flag: https://php.net/manual/en/function.sort.php
  //   example 1: i18n_loc_get_default()
  //   returns 1: 'en_US_POSIX'
  //   example 2: i18n_loc_set_default('pt_PT')
  //   example 2: i18n_loc_get_default()
  //   returns 2: 'pt_PT'

  const runtime = ensurePhpRuntimeState()
  return runtime.locale_default ?? 'en_US_POSIX'
}

// php/_helpers/_phpTypes (Locutus helper dependency)
type PhpNullish = null | undefined

type PhpInput = {} | PhpNullish

type PhpList<T = PhpInput> = T[]

type PhpAssoc<T = PhpInput> = { [key: string]: T }

type PhpArrayLike<T = PhpInput> = PhpList<T> | PhpAssoc<T>

function isPhpList<T = PhpInput>(value: PhpInput): value is PhpList<T> {
  return Array.isArray(value)
}

function isObjectLike(value: PhpInput): value is PhpArrayLike<PhpInput> {
  return typeof value === 'object' && value !== null
}

function isPhpAssocObject<T = PhpInput>(value: PhpInput): value is PhpAssoc<T> {
  return isObjectLike(value) && !isPhpList(value)
}

// php/_helpers/_phpRuntimeState (Locutus helper dependency)
interface IniEntry {
  local_value?: PhpInput
}

type LocaleEntry = PhpAssoc<PhpInput> & {
  sorting?: (left: PhpInput, right: PhpInput) => number
}

type LocaleCategoryMap = PhpAssoc<string | undefined>

interface LocutusRuntimeContainer {
  php?: PhpAssoc<PhpInput>
}

type GlobalWithLocutus = {
  $locutus?: LocutusRuntimeContainer
  [key: string]: PhpInput
}

interface PhpRuntimeState {
  ini: PhpAssoc<IniEntry | undefined>
  locales: PhpAssoc<LocaleEntry | undefined>
  localeCategories: LocaleCategoryMap
  pointers: PhpList<PhpInput>
  locale_default: string | undefined
}

const isIniBag = (value: PhpInput): value is PhpAssoc<IniEntry | undefined> =>
  isPhpAssocObject<IniEntry | undefined>(value)

const isLocaleBag = (value: PhpInput): value is PhpAssoc<LocaleEntry | undefined> =>
  isPhpAssocObject<LocaleEntry | undefined>(value)

const isLocaleCategoryBag = (value: PhpInput): value is LocaleCategoryMap => isPhpAssocObject<string | undefined>(value)

const globalContext: GlobalWithLocutus =
  typeof window === 'object' && window !== null ? window : typeof global === 'object' && global !== null ? global : {}

const ensurePhpRuntimeObject = (): PhpAssoc<PhpInput> => {
  let locutus = globalContext.$locutus
  if (typeof locutus !== 'object' || locutus === null) {
    locutus = {}
    globalContext.$locutus = locutus
  }

  let php = locutus.php
  if (typeof php !== 'object' || php === null) {
    php = {}
    locutus.php = php
  }

  return php
}

function ensurePhpRuntimeState(): PhpRuntimeState {
  const php = ensurePhpRuntimeObject()
  const iniValue = php.ini
  const localesValue = php.locales
  const localeCategoriesValue = php.localeCategories
  const pointersValue = php.pointers

  const ini = isIniBag(iniValue) ? iniValue : {}
  const locales = isLocaleBag(localesValue) ? localesValue : {}
  const localeCategories = isLocaleCategoryBag(localeCategoriesValue) ? localeCategoriesValue : {}
  const pointers: PhpList<PhpInput> = Array.isArray(pointersValue) ? pointersValue : []

  if (iniValue !== ini) {
    php.ini = ini
  }
  if (localesValue !== locales) {
    php.locales = locales
  }
  if (localeCategoriesValue !== localeCategories) {
    php.localeCategories = localeCategories
  }
  if (pointersValue !== pointers) {
    php.pointers = pointers
  }

  const localeDefaultValue = php.locale_default
  const localeDefault = typeof localeDefaultValue === 'string' ? localeDefaultValue : undefined

  return {
    ini,
    locales,
    localeCategories,
    pointers,
    locale_default: localeDefault,
  }
}

// php/i18n/i18n_loc_get_default (target function module)
function i18n_loc_get_default(): string {
  //  discuss at: https://locutus.io/php/i18n_loc_get_default/
  // original by: Brett Zamir (https://brett-zamir.me)
  //      note 1: Renamed in PHP6 from locale_get_default(). Not listed yet at php.net.
  //      note 1: List of locales at <https://demo.icu-project.org/icu-bin/locexp>
  //      note 1: To be usable with sort() if it is passed the `SORT_LOCALE_STRING`
  //      note 1: sorting flag: https://php.net/manual/en/function.sort.php
  //   example 1: i18n_loc_get_default()
  //   returns 1: 'en_US_POSIX'
  //   example 2: i18n_loc_set_default('pt_PT')
  //   example 2: i18n_loc_get_default()
  //   returns 2: 'pt_PT'

  const runtime = ensurePhpRuntimeState()
  return runtime.locale_default ?? 'en_US_POSIX'
}

// php/_helpers/_phpTypes (Locutus helper dependency)

function isObjectLike(value) {
  return typeof value === 'object' && value !== null
}

function isPhpAssocObject(value) {
  return isObjectLike(value) && !Array.isArray(value)
}

// php/_helpers/_phpRuntimeState (Locutus helper dependency)

const globalContext =
  typeof window === 'object' && window !== null ? window : typeof global === 'object' && global !== null ? global : {}

const ensurePhpRuntimeObject = () => {
  let locutus = globalContext.$locutus
  if (typeof locutus !== 'object' || locutus === null) {
    locutus = {}
    globalContext.$locutus = locutus
  }

  let php = locutus.php
  if (typeof php !== 'object' || php === null) {
    php = {}
    locutus.php = php
  }

  return php
}

function ensurePhpRuntimeState() {
  const php = ensurePhpRuntimeObject()
  const iniValue = php.ini
  const localesValue = php.locales
  const localeCategoriesValue = php.localeCategories
  const pointersValue = php.pointers

  const ini = isPhpAssocObject(iniValue) ? iniValue : {}
  const locales = isPhpAssocObject(localesValue) ? localesValue : {}
  const localeCategories = isPhpAssocObject(localeCategoriesValue) ? localeCategoriesValue : {}
  const pointers = Array.isArray(pointersValue) ? pointersValue : []

  if (iniValue !== ini) {
    php.ini = ini
  }
  if (localesValue !== locales) {
    php.locales = locales
  }
  if (localeCategoriesValue !== localeCategories) {
    php.localeCategories = localeCategories
  }
  if (pointersValue !== pointers) {
    php.pointers = pointers
  }

  const localeDefaultValue = php.locale_default
  const localeDefault = typeof localeDefaultValue === 'string' ? localeDefaultValue : undefined

  return {
    ini,
    locales,
    localeCategories,
    pointers,
    locale_default: localeDefault,
  }
}

// php/i18n/i18n_loc_get_default (target function module)
function i18n_loc_get_default() {
  //  discuss at: https://locutus.io/php/i18n_loc_get_default/
  // original by: Brett Zamir (https://brett-zamir.me)
  //      note 1: Renamed in PHP6 from locale_get_default(). Not listed yet at php.net.
  //      note 1: List of locales at <https://demo.icu-project.org/icu-bin/locexp>
  //      note 1: To be usable with sort() if it is passed the `SORT_LOCALE_STRING`
  //      note 1: sorting flag: https://php.net/manual/en/function.sort.php
  //   example 1: i18n_loc_get_default()
  //   returns 1: 'en_US_POSIX'
  //   example 2: i18n_loc_set_default('pt_PT')
  //   example 2: i18n_loc_get_default()
  //   returns 2: 'pt_PT'

  const runtime = ensurePhpRuntimeState()
  return runtime.locale_default ?? 'en_US_POSIX'
}

Improve this function

Locutus is a community effort following The McDonald's Theory: we ship first iterations, hoping others will improve them. If you see something that could be better, we'd love your contribution.

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