/
Indent.php
95 lines (79 loc) 路 2.08 KB
/
Indent.php
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<?php
declare(strict_types=1);
/**
* Copyright (c) 2018-2022 Andreas M枚ller
*
* For the full copyright and license information, please view
* the LICENSE.md file that was distributed with this source code.
*
* @see https://github.com/ergebnis/json-normalizer
*/
namespace Ergebnis\Json\Normalizer\Format;
use Ergebnis\Json\Normalizer\Exception;
use Ergebnis\Json\Normalizer\Json;
/**
* @psalm-immutable
*/
final class Indent
{
public const CHARACTERS = [
'space' => ' ',
'tab' => "\t",
];
private string $value;
private function __construct(string $value)
{
$this->value = $value;
}
/**
* @throws Exception\InvalidIndentString
*/
public static function fromString(string $value): self
{
if (1 !== \preg_match('/^( *|\t+)$/', $value)) {
throw Exception\InvalidIndentString::fromString($value);
}
return new self($value);
}
/**
* @throws Exception\InvalidIndentSize
* @throws Exception\InvalidIndentStyle
*/
public static function fromSizeAndStyle(
int $size,
string $style
): self {
$minimumSize = 1;
if ($minimumSize > $size) {
throw Exception\InvalidIndentSize::fromSizeAndMinimumSize(
$size,
$minimumSize,
);
}
if (!\array_key_exists($style, self::CHARACTERS)) {
throw Exception\InvalidIndentStyle::fromStyleAndAllowedStyles(
$style,
...\array_keys(self::CHARACTERS),
);
}
$value = \str_repeat(
self::CHARACTERS[$style],
$size,
);
return new self($value);
}
public static function fromJson(Json $json): self
{
if (1 === \preg_match('/^(?P<indent>( +|\t+)).*/m', $json->encoded(), $match)) {
return self::fromString($match['indent']);
}
return self::fromSizeAndStyle(
4,
'space',
);
}
public function toString(): string
{
return $this->value;
}
}