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import mergeArrays from './mergeArrays.js'
export default function checkNumberLength(nationalNumber, metadata) {
return checkNumberLengthForType(nationalNumber, undefined, metadata)
}
// Checks whether a number is possible for the country based on its length.
// Should only be called for the "new" metadata which has "possible lengths".
export function checkNumberLengthForType(nationalNumber, type, metadata) {
const type_info = metadata.type(type)
// There should always be "<possiblePengths/>" set for every type element.
// This is declared in the XML schema.
// For size efficiency, where a sub-description (e.g. fixed-line)
// has the same "<possiblePengths/>" as the "general description", this is missing,
// so we fall back to the "general description". Where no numbers of the type
// exist at all, there is one possible length (-1) which is guaranteed
// not to match the length of any real phone number.
let possible_lengths = type_info && type_info.possibleLengths() || metadata.possibleLengths()
// let local_lengths = type_info && type.possibleLengthsLocal() || metadata.possibleLengthsLocal()
// Metadata before version `1.0.18` didn't contain `possible_lengths`.
if (!possible_lengths) {
return 'IS_POSSIBLE'
}
if (type === 'FIXED_LINE_OR_MOBILE') {
// No such country in metadata.
/* istanbul ignore next */
if (!metadata.type('FIXED_LINE')) {
// The rare case has been encountered where no fixedLine data is available
// (true for some non-geographic entities), so we just check mobile.
return checkNumberLengthForType(nationalNumber, 'MOBILE', metadata)
}
const mobile_type = metadata.type('MOBILE')
if (mobile_type) {
// Merge the mobile data in if there was any. "Concat" creates a new
// array, it doesn't edit possible_lengths in place, so we don't need a copy.
// Note that when adding the possible lengths from mobile, we have
// to again check they aren't empty since if they are this indicates
// they are the same as the general desc and should be obtained from there.
possible_lengths = mergeArrays(possible_lengths, mobile_type.possibleLengths())
// The current list is sorted; we need to merge in the new list and
// re-sort (duplicates are okay). Sorting isn't so expensive because
// the lists are very small.
// if (local_lengths) {
// local_lengths = mergeArrays(local_lengths, mobile_type.possibleLengthsLocal())
// } else {
// local_lengths = mobile_type.possibleLengthsLocal()
// }
}
}
// If the type doesn't exist then return 'INVALID_LENGTH'.
else if (type && !type_info) {
return 'INVALID_LENGTH'
}
const actual_length = nationalNumber.length
// In `libphonenumber-js` all "local-only" formats are dropped for simplicity.
// // This is safe because there is never an overlap beween the possible lengths
// // and the local-only lengths; this is checked at build time.
// if (local_lengths && local_lengths.indexOf(nationalNumber.length) >= 0)
// {
// return 'IS_POSSIBLE_LOCAL_ONLY'
// }
const minimum_length = possible_lengths[0]
if (minimum_length === actual_length) {
return 'IS_POSSIBLE'
}
if (minimum_length > actual_length) {
return 'TOO_SHORT'
}
if (possible_lengths[possible_lengths.length - 1] < actual_length) {
return 'TOO_LONG'
}
// We skip the first element since we've already checked it.
return possible_lengths.indexOf(actual_length, 1) >= 0 ? 'IS_POSSIBLE' : 'INVALID_LENGTH'
}
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