53 lines
1.5 KiB
Go
53 lines
1.5 KiB
Go
/*
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* Amsterdam Web Communities System
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* Copyright (c) 2025 Erbosoft Metaverse Design Solutions, All Rights Reserved
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* SPDX-License-Identifier: MPL-2.0
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*/
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// Package util contains utility definitions.
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package util
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import (
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"slices"
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"strings"
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"sync"
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"github.com/biter777/countries"
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)
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// cachedCountryList is the cached country list after sorting.
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var cachedCountryList []countries.CountryCode = nil
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// countryListMutex control access to internalGetCountryList.
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var countryListMutex sync.Mutex
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// AmCountryList is a wrapper around countries.All() that sorts it by country name.
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func AmCountryList(prioritize string) []countries.CountryCode {
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countryListMutex.Lock()
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defer countryListMutex.Unlock()
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if cachedCountryList == nil {
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countryList := countries.All()
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slices.SortFunc(countryList, func(a countries.CountryCode, b countries.CountryCode) int {
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return strings.Compare(a.Info().Name, b.Info().Name)
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})
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if prioritize != "" {
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for i, c := range countryList {
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if c.Info().Alpha2 == prioritize {
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newList := make([]countries.CountryCode, len(countryList))
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newList[0] = c
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copy(newList[1:], countryList[:i])
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copy(newList[i+1:], countryList[i+1:])
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countryList = newList
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}
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}
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}
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cachedCountryList = countryList
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}
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return cachedCountryList
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}
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