private void GetAvailableFormats(string leadingDigits)
{
// First decide whether we should use international or national number rules.
var isInternationalNumber = isCompleteNumber && extractedNationalPrefix.Length == 0;
var formatList =
isInternationalNumber && currentMetadata.IntlNumberFormatCount > 0
? currentMetadata.IntlNumberFormatList
: currentMetadata.NumberFormatList;
foreach (var format in formatList)
{
// Discard a few formats that we know are not relevant based on the presence of the national
// prefix.
if (extractedNationalPrefix.Length > 0 &&
PhoneNumberUtil.FormattingRuleHasFirstGroupOnly(
format.NationalPrefixFormattingRule) &&
!format.NationalPrefixOptionalWhenFormatting &&
!format.HasDomesticCarrierCodeFormattingRule)
{
// If it is a national number that had a national prefix, any rules that aren't valid with a
// national prefix should be excluded. A rule that has a carrier-code formatting rule is
// kept since the national prefix might actually be an extracted carrier code - we don't
// distinguish between these when extracting it in the AYTF.
continue;
}
else if (extractedNationalPrefix.Length == 0 &&
!isCompleteNumber &&
!PhoneNumberUtil.FormattingRuleHasFirstGroupOnly(
format.NationalPrefixFormattingRule) &&
!format.NationalPrefixOptionalWhenFormatting)
{
// This number was entered without a national prefix, and this formatting rule requires one,
// so we discard it.
continue;
}
if (EligibleFormatPattern.IsMatchAll(format.Format))
{
possibleFormats.Add(format);
}
}
NarrowDownPossibleFormats(leadingDigits);
}
private void GetAvailableFormats(string leadingDigits)
{
var formatList =
isCompleteNumber && currentMetadata.IntlNumberFormatCount > 0
? currentMetadata.IntlNumberFormatList
: currentMetadata.NumberFormatList;
var nationalPrefixIsUsedByCountry = currentMetadata.HasNationalPrefix;
foreach (var format in formatList)
{
if (!nationalPrefixIsUsedByCountry ||
isCompleteNumber ||
format.NationalPrefixOptionalWhenFormatting ||
PhoneNumberUtil.FormattingRuleHasFirstGroupOnly(
format.NationalPrefixFormattingRule))
{
if (IsFormatEligible(format.Format))
{
possibleFormats.Add(format);
}
}
}
NarrowDownPossibleFormats(leadingDigits);
}