Encode a file.

use Jstewmc\EncodeFile\Encode;

// set the filename
$filename = '/path/to/foo.txt';

// create an ASCII encoded string
$contents = mb_convert_encoding('foo', 'ASCII');

// put the contents into the file
file_put_contents($filename, $contents);

// is the file UTF-32 encoded?
mb_check_encoding(file_get_contents($filename), 'UTF-32');  // returns false

// create the service
// keep in mind, you'll need to implement the Read and Write interfaces
//
$service = new Encode(new Read(), new Write());

// convert the file to UTF-32
$service($filename, 'UTF-32');

// is the file UTF-32 encoded?
mb_check_encoding(file_get_contents($filename), 'UTF-32');  // returns true

This library requires PHP's non-default mbstring extension. If the service is instantiated without the mbstring extension loaded, a BadMethodCallException will be thrown.

This library depends on (and provides) two interfaces for a read-file service and a write-file service. The former must implement a __invoke(string $filename): string method, and the latter must implement a __invoke(string $filename, string $contents): int method.

The read-file and write-file interfaces MAY be implemented by the jstewmc/read-file and jstewmc/write-file libraries, respectively. For example, in your application, extend Jstewmc\ReadFile\Read and implement Jstewmc\EncodeFile\Read:

namespace My\App;

use Jstewmc\EncodeFile\Read as ReadInterface;
use Jstewmc\ReadFile\Read as ReadParent;

class Read extends ReadParent implements ReadInterface
{
    // nothing yet   
}

Keep in mind, it's difficult to detect a string's character encoding. Even PHP's mb_detect_encoding() function is not perfect. For example, mb_detect_encoding() will almost never detect Windows-1252 encoding, even if the string actually is Windows-1252 encoded (see Bug #64667 for details).

To prevent erroneously detecting the file's from encoding, you MAY include it as the service's third argument. If the "from" encoding is not given, the library will attempt to detect it.

use Jstewmc\EncodeFile\Encode;

$service = new Encode(new Read(), new Write());

// encode file as UTF-8 from Windows-1252
$service('/path/to/file.txt', 'UTF-8', 'Windows-1252');

Jack Clayton

MIT

• Add Read and Write interfaces.
• Delete dependency on jstewmc/read-file and jstewmc/write-file.

• Rename repository to encode-file.
• Refactor library to use jstewmc/read-file and jstewmc/write-file

• Initial release