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<?php |
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namespace Kodus\Mail; |
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use InvalidArgumentException; |
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/** |
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* Internal helper component - writes data to a stream using various filters. |
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* |
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* @internal |
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*/ |
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class Writer |
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{ |
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/** |
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* @var int |
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*/ |
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public $line_length = 76; |
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/** |
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* @var string end-of-line characters |
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*/ |
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public $eol = "\r\n"; |
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/** |
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* @var resource |
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*/ |
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protected $output; |
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/** |
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* @param resource $output output stream handle |
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*/ |
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public function __construct($output) |
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{ |
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$this->output = $output; |
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} |
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/** |
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* Writes raw data from a string, or the raw contents of a given resource, to the output stream |
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* |
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* @param string|resource $input |
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*/ |
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public function write($input): void |
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{ |
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if (is_string($input)) { |
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fwrite($this->output, $input); |
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} elseif (is_resource($input)) { |
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rewind($input); |
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stream_copy_to_stream($input, $this->output); |
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} else { |
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throw new InvalidArgumentException("unsupported data-type; expected string or resource handle"); |
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} |
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} |
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/** |
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* Writes the given raw string data, plus an EOL character, to the output stream |
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* |
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* @param string $string |
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*/ |
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public function writeLine($string = ""): void |
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{ |
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fwrite($this->output, $string); |
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fwrite($this->output, $this->eol); |
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} |
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/** |
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* Writes data from a string, or the raw contents of a given resource, as quoted-printable, to the output stream |
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* |
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* @param string|resource $input |
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*/ |
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public function writeQuotedPrintable($input): void |
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{ |
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$this->writeFiltered( |
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$input, |
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'convert.quoted-printable-encode', |
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[ |
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"line-length" => $this->line_length, |
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"line-break-chars" => $this->eol, |
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] |
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); |
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} |
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/** |
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* Writes data from a string, or the raw contents of a given resource, base-64 encoded, to the output stream |
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* |
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* @param string|resource $input |
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*/ |
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public function writeBase64($input): void |
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{ |
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$this->writeFiltered( |
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$input, |
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'convert.base64-encode', |
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[ |
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"line-length" => $this->line_length, |
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"line-break-chars" => $this->eol, |
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"force-encode-first" => true, |
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] |
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); |
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} |
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/** |
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* Write data from a string, or the contents of a given resource, to the output string, while applying a filter |
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* |
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* @param string|resource $input |
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* @param string $filter |
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* @param array $options |
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*/ |
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protected function writeFiltered($input, string $filter, array $options = []): void |
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{ |
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$filter = stream_filter_prepend($this->output, $filter, STREAM_FILTER_WRITE, $options); |
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$this->write($input); |
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stream_filter_remove($filter); |
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} |
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} |
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kodus /
mail
