clrghouz/app/Casts/CompressedString.php
Deon George d036c7e704
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When decompressing compressed messages, dont barf if we try to decompress the same attribute twice
2024-05-13 15:29:29 +10:00

53 lines
1.2 KiB
PHP

<?php
namespace App\Casts;
use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
use Illuminate\Database\Eloquent\Model;
class CompressedString implements CastsAttributes
{
/**
* Cast the given value.
*
* For postgresl bytea columns the value is a resource stream
*
* @param Model $model
* @param string $key
* @param mixed $value
* @param array $attributes
* @return string
*/
public function get($model,string $key,mixed $value,array $attributes): string
{
// For stream resources, we to fseek in case we've already read it.
if (is_resource($value))
fseek($value,0);
$value = is_resource($value)
? stream_get_contents($value)
: $value;
// If we get an error decompressing, it might not be zstd (or its already been done)
try {
return $value ? zstd_uncompress(base64_decode($value)) : '';
} catch (\ErrorException $e) {
return $value;
}
}
/**
* Prepare the given value for storage.
*
* @param Model $model
* @param string $key
* @param mixed $value
* @param array $attributes
* @return string
*/
public function set($model,string $key,$value,array $attributes): string
{
return $value ? base64_encode(zstd_compress($value)) : '';
}
}