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by Changwan
05:50
created

CaseMapper::fromPascalCase()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 4
Code Lines 2

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 0
CRAP Score 2

Importance

Changes 0
Metric Value
cc 1
eloc 2
nc 1
nop 1
dl 0
loc 4
ccs 0
cts 4
cp 0
crap 2
rs 10
c 0
b 0
f 0
1
<?php
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namespace Wandu\Support\Mapper;
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use InvalidArgumentException;
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use Wandu\Support\Contracts\MapperInterface;
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class CaseMapper implements MapperInterface
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{
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    const SNAKECASE = 1; // snake_case
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    const PASCALCASE = 2; // PascalCase
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    const CAMELCASE = 3; // camelCase
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    const KEBABCASE = 4; // kebab-case 
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    /** @var int */
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    private $from;
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    /** @var int */
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    private $to;
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    /**
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     * @param int $from
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     * @param int $to
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     */
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    public function __construct($from, $to)
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    {
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        $this->from = $from;
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        $this->to = $to;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function map($name)
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    {
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        // 4 cases, [SNAKECASE, SNAKECASE], [PASCALCASE, PASCALCASE], [CAMELCASE, CAMELCASE], [KEBABCASE, KEBABCASE]
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        if ($this->from === $this->to) return $name;
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        switch ($this->from) {
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            case static::PASCALCASE:
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                if ($this->to === static::CAMELCASE) return lcfirst($name);
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                $tokens = $this->fromPascalCase($name);
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                break;
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            case static::CAMELCASE:
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                if ($this->to === static::PASCALCASE) return ucfirst($name);
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                $tokens = $this->fromPascalCase($name);
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                break;
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            case static::KEBABCASE:
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                $tokens = $this->fromKebabCase($name);
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                break;
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            case static::SNAKECASE:
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                $tokens = $this->fromSnakeCase($name);
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                break;
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            default:
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                throw new InvalidArgumentException("Argument 1 passed to " . __METHOD__ . "() must be in [1, 2, 3, 4]");
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        }
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        switch ($this->to) {
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            case static::PASCALCASE:
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                return str_replace(' ', '', ucwords($tokens));
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            case static::CAMELCASE:
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                return lcfirst(str_replace(' ', '', ucwords($tokens)));
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            case static::KEBABCASE:
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                return str_replace(' ', '-', strtolower($tokens));
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            case static::SNAKECASE:
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                return str_replace(' ', '_', strtolower($tokens));
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            default:
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                throw new InvalidArgumentException("Argument 1 passed to " . __METHOD__ . "() must be in [1, 2, 3, 4]");
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        }
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    }
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    private function fromSnakeCase($name)
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    {
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        return str_replace('_', ' ', $name);
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    }
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    private function fromKebabCase($name)
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    {
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        return str_replace('-', ' ', $name);
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    }
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    private function fromPascalCase($name)
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    {
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        return preg_replace('/((?<=[^$])[A-Z0-9])/', ' $1', $name);
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    }
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}
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