public static MailFormatHelper::wrapMail($text, $indent = '')
Performs format=flowed soft wrapping for mail (RFC 3676).
We use delsp=yes wrapping, but only break non-spaced languages when absolutely necessary to avoid compatibility issues.
We deliberately use LF rather than CRLF, see MailManagerInterface::mail().
Parameters
string $text: The plain text to process.
string $indent: (optional) A string to indent the text with. Only '>' characters are repeated on subsequent wrapped lines. Others are replaced by spaces.
Return value
string The content of the email as a string with formatting applied.
File
- core/lib/Drupal/Core/Mail/MailFormatHelper.php, line 53
Class
- MailFormatHelper
- Defines a class containing utility methods for formatting mail messages.
Namespace
Drupal\Core\Mail
Code
public static function wrapMail($text, $indent = '') {
// Convert CRLF into LF.
$text = str_replace("\r", '', $text);
// See if soft-wrapping is allowed.
$clean_indent = static::htmlToTextClean($indent);
$soft = strpos($clean_indent, ' ') === FALSE;
// Check if the string has line breaks.
if (strpos($text, "\n") !== FALSE) {
// Remove trailing spaces to make existing breaks hard, but leave
// signature marker untouched (RFC 3676, Section 4.3).
$text = preg_replace('/(?(?<!^--) +\n| +\n)/m', "\n", $text);
// Wrap each line at the needed width.
$lines = explode("\n", $text);
array_walk($lines, '\Drupal\Core\Mail\MailFormatHelper::wrapMailLine', array('soft' => $soft, 'length' => strlen($indent)));
$text = implode("\n", $lines);
}
else {
// Wrap this line.
static::wrapMailLine($text, 0, array('soft' => $soft, 'length' => strlen($indent)));
}
// Empty lines with nothing but spaces.
$text = preg_replace('/^ +\n/m', "\n", $text);
// Space-stuff special lines.
$text = preg_replace('/^(>| |From)/m', ' $1', $text);
// Apply indentation. We only include non-'>' indentation on the first line.
$text = $indent . substr(preg_replace('/^/m', $clean_indent, $text), strlen($indent));
return $text;
}
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