44 lines
934 B
JavaScript
44 lines
934 B
JavaScript
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'use strict'
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module.exports = stringify
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// Compile a language schema to a BCP 47 language tag.
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function stringify(schema) {
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var fields = schema || {}
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var result = []
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var values
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var index
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var value
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if (fields.irregular || fields.regular) {
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return fields.irregular || fields.regular
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}
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if (fields.language) {
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result = result.concat(
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fields.language,
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fields.extendedLanguageSubtags || [],
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fields.script || [],
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fields.region || [],
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fields.variants || []
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)
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values = fields.extensions || []
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index = -1
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while (++index < values.length) {
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value = values[index]
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if (value.singleton && value.extensions && value.extensions.length) {
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result = result.concat(value.singleton, value.extensions)
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}
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}
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}
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if (fields.privateuse && fields.privateuse.length) {
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result = result.concat('x', fields.privateuse)
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}
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return result.join('-')
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}
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