MysqlUuid\Formats\ReorderedString

Complexity

Total Complexity

2

Size/Duplication

Total Lines	43
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	1

Test Coverage

Coverage

100%

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	toFields()	0	17	1
A	fromFields()	0	16	1

<?php

namespace MysqlUuid\Formats;

/**
 * A 'standard' UUID that has had the node and time_mid/time_low fields swapped
 *
 * To retain the 4,2,2,2,6 byte separators, we have to split the node field when
 * we move it, and combine the time_mid and time_low fields.
 */
class ReorderedString extends PlainString
{
    /**
     * @inheritDoc
     */
    public function toFields($value)
    {
        $fields = parent::toFields($value);

        // Node identifier is split into time_low and time_mid
        $node = $fields['time_low'] . $fields['time_mid'];

        // Time mid and low are multiplexed into node
        $time_mid = substr($fields['node'], 0, 4);
        $time_low = substr($fields['node'], 4, 8);

        $fields['node']     = $node;
        $fields['time_low'] = $time_low;
        $fields['time_mid'] = $time_mid;

        return $fields;
    }

    /**
     * @inheritDoc
     */
    public function fromFields(array $fields)
    {
        $node_high = substr($fields['node'], 0, 8);
        $node_low  = substr($fields['node'], 8, 4);

        $time_midlow = $fields['time_mid'] . $fields['time_low'];

        return sprintf(
            '%s-%s-%s-%s-%s',
            $node_high,
            $node_low,
            $fields['time_high'],
            $fields['clock_seq'],
            $time_midlow
        );
    }
}