Same name in other branches

1. 9 core/lib/Drupal/Core/Mail/MailFormatHelper.php \Drupal\Core\Mail\MailFormatHelper::wrapMail()
2. 8.9.x core/lib/Drupal/Core/Mail/MailFormatHelper.php \Drupal\Core\Mail\MailFormatHelper::wrapMail()
3. 11.x core/lib/Drupal/Core/Mail/MailFormatHelper.php \Drupal\Core\Mail\MailFormatHelper::wrapMail()

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.

9 calls to MailFormatHelper::wrapMail()

HtmlToTextTest::testRemoveTrailingWhitespace in core/modules/system/tests/src/Unit/Mail/HtmlToTextTest.php

Tests that trailing whitespace is removed before newlines.

HtmlToTextTest::testUsenetSignature in core/modules/system/tests/src/Unit/Mail/HtmlToTextTest.php

Tests that trailing whitespace from Usenet style signatures is not removed.

MailFormatHelper::htmlToText in core/lib/Drupal/Core/Mail/MailFormatHelper.php

Transforms an HTML string into plain text, preserving its structure.

MailFormatHelperTest::testWrapMail in core/tests/Drupal/Tests/Core/Mail/MailFormatHelperTest.php

@covers ::wrapMail

MailTest::testConvertRelativeUrlsIntoAbsolute in core/modules/system/tests/src/Kernel/Mail/MailTest.php

Checks that relative paths in mails are converted into absolute URLs.

... See full list

File

core/lib/Drupal/Core/Mail/MailFormatHelper.php, line 54

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);
    $soft = !str_contains($clean_indent, ' ');
    // Check if the string has line breaks.
    if (str_contains($text, "\n")) {
        // 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', [
            'soft' => $soft,
            'length' => strlen($indent),
        ]);
        $text = implode("\n", $lines);
    }
    else {
        // Wrap this line.
        static::wrapMailLine($text, 0, [
            '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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