libphonenumber\PhoneNumberMatcher::allNumberGroupsRemainGrouped()

Complexity

Conditions	9
Paths	16

Size

Total Lines	56
Code Lines	22

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	22
CRAP Score	9.5145

Importance

Changes	1
Bugs	0	Features	0

<?php
    public static function allNumberGroupsRemainGrouped(
        PhoneNumberUtil $util,
        PhoneNumber $number,
        $normalizedCandidate,
        $formattedNumberGroups
    ) {
        $fromIndex = 0;
        if ($number->getCountryCodeSource() !== CountryCodeSource::FROM_DEFAULT_COUNTRY) {
            // First skip the country code if the normalized candidate contained it.
            $countryCode = $number->getCountryCode();
            $fromIndex = \mb_strpos($normalizedCandidate, $countryCode) + \mb_strlen($countryCode);
        }

        // Check each group of consecutive digits are not broken into separate groupings in the
        // $normalizedCandidate string.
        $formattedNumberGroupsLength = \count($formattedNumberGroups);
        for ($i = 0; $i < $formattedNumberGroupsLength; $i++) {
            // Fails if the substring of $normalizedCandidate starting from $fromIndex
            // doesn't contain the consecutive digits in $formattedNumberGroups[$i].
            $fromIndex = \mb_strpos($normalizedCandidate, $formattedNumberGroups[$i], $fromIndex);
            if ($fromIndex === false) {
                return false;
            }

            // Moves $fromIndex forward.
            $fromIndex += \mb_strlen($formattedNumberGroups[$i]);
            if ($i === 0 && $fromIndex < \mb_strlen($normalizedCandidate)) {
                // We are at the position right after the NDC. We get the region used for formatting
                // information based on the country code in the phone number, rather than the number itself,
                // as we do not need to distinguish between different countries with the same country
                // calling code and this is faster.
                $region = $util->getRegionCodeForCountryCode($number->getCountryCode());

                if ($util->getNddPrefixForRegion($region, true) !== null
                    && \is_int(\mb_substr($normalizedCandidate, $fromIndex, 1))
                ) {
                    // This means there is no formatting symbol after the NDC. In this case, we only
                    // accept the number if there is no formatting symbol at all in the number, except
                    // for extensions. This is only important for countries with national prefixes.
                    $nationalSignificantNumber = $util->getNationalSignificantNumber($number);
                    return \mb_substr(
                        \mb_substr($normalizedCandidate, $fromIndex - \mb_strlen($formattedNumberGroups[$i])),
                        \mb_strlen($nationalSignificantNumber)
                    ) === $nationalSignificantNumber;
                }
            }
        }
        // The check here makes sure that we haven't mistakenly already used the extension to
        // match the last group of the subscriber number. Note the extension cannot have
        // formatting in-between digits

        if ($number->hasExtension()) {
            return \mb_strpos(\mb_substr($normalizedCandidate, $fromIndex), $number->getExtension()) !== false;
        }

        return true;
    }