Swaggest\JsonDiff\JsonPointer

Complexity

Total Complexity

34

Size/Duplication

Total Lines	159
Duplicated Lines	0 %

Importance

Changes

0

7 Methods

Rating	Name	Duplication	Size	Complexity
B	splitPath()	0	20	5
C	remove()	0	29	8
B	get()	0	22	6
B	add()	0	18	6
A	escapeSegment()	0	6	2
A	arrayKeyExists()	0	12	4
A	arrayGet()	0	9	3

<?php

namespace Swaggest\JsonDiff;


class JsonPointer
{
    /**
     * @param string $key
     * @param bool $isURIFragmentId
     * @return string
     */
    public static function escapeSegment($key, $isURIFragmentId = false)
    {
        if ($isURIFragmentId) {
            return str_replace(array('%2F', '%7E'), array('~0', '~1'), urlencode($key));
        } else {
            return str_replace(array('~', '/'), array('~0', '~1'), $key);
        }
    }

    /**
     * @param string $path
     * @return string[]
     * @throws Exception
     */
    public static function splitPath($path)
    {
        $pathItems = explode('/', $path);
        $first = array_shift($pathItems);
        $result = array();
        if ($first === '#') {
            foreach ($pathItems as $key) {
                $key = str_replace(array('~0', '~1'), array('~', '/'), urldecode($key));
                $result[] = $key;
            }
        } else {
            if ($first !== '') {
                throw new Exception('Path must start with "/": ' . $path);
            }
            foreach ($pathItems as $key) {
                $key = str_replace(array('~0', '~1'), array('~', '/'), $key);
                $result[] = $key;
            }
        }
        return $result;
    }

    /**
     * @param mixed $holder
     * @param string[] $pathItems
     * @param mixed $value
     */
    public static function add(&$holder, $pathItems, $value)
    {
        $ref = &$holder;
        while (null !== $key = array_shift($pathItems)) {
            if ($ref instanceof \stdClass) {
                $ref = &$ref->$key;
            } elseif ($ref === null
                && !is_int($key)
                && false === filter_var($key, FILTER_VALIDATE_INT)
            ) {
                $key = (string)$key;
                $ref = new \stdClass();
                $ref = &$ref->{$key};
            } else {
                $ref = &$ref[$key];
            }
        }
        $ref = $value;
    }

    private static function arrayKeyExists($key, array $a)
    {
        if (array_key_exists($key, $a)) {
            return true;
        }
        $key = (string)$key;
        foreach ($a as $k => $v) {
            if ((string)$k === $key) {
                return true;
            }
        }
        return false;
    }

    private static function arrayGet($key, array $a)
    {
        $key = (string)$key;
        foreach ($a as $k => $v) {
            if ((string)$k === $key) {
                return $v;
            }
        }
        return false;
    }


    /**
     * @param mixed $holder
     * @param string[] $pathItems
     * @return bool|mixed
     * @throws Exception
     */
    public static function get($holder, $pathItems)
    {
        $ref = $holder;
        while (null !== $key = array_shift($pathItems)) {
            if ($ref instanceof \stdClass) {
                $vars = (array)$ref;
                if (self::arrayKeyExists($key, $vars)) {
                    $ref = self::arrayGet($key, $vars);
                } else {
                    throw new Exception('Key not found: ' . $key);
                }
            } elseif (is_array($ref)) {
                if (self::arrayKeyExists($key, $ref)) {
                    $ref = $ref[$key];
                } else {
                    throw new Exception('Key not found: ' . $key);
                }
            } else {
                throw new Exception('Key not found: ' . $key);
            }
        }
        return $ref;
    }

    /**
     * @param mixed $holder
     * @param string[] $pathItems
     * @return mixed
     * @throws Exception
     */
    public static function remove(&$holder, $pathItems)
    {
        $ref = &$holder;
        while (null !== $key = array_shift($pathItems)) {
            $parent = &$ref;
            $refKey = $key;
            if ($ref instanceof \stdClass) {
                if (property_exists($ref, $key)) {
                    $ref = &$ref->$key;
                } else {
                    throw new Exception('Key not found: ' . $key);
                }
            } else {
                if (array_key_exists($key, $ref)) {
                    $ref = &$ref[$key];
                } else {
                    throw new Exception('Key not found: ' . $key);
                }
            }
        }

        if (isset($parent) && isset($refKey)) {
            if ($parent instanceof \stdClass) {
                unset($parent->$refKey);
            } else {
                unset($parent[$refKey]);
            }
        }
        return $ref;
    }
}