0fd89727e9
Fixed phpunit test runs with encoding test run and not resetting the subsitute character back to default Note: There are mime encoding failures for php 7.4 and 8.0 and one ACL login failure test for php 7.4
72 lines
2.2 KiB
PHP
72 lines
2.2 KiB
PHP
<?php
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/*
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* alternate for header mime encode to void problems with long strings and
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* spaces/strange encoding problems.
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* Orignal issues during PHP5/7
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*/
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declare(strict_types=1);
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namespace CoreLibs\Convert;
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class MimeEncode
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{
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/**
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* wrapper function for mb mime convert
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* for correct conversion with long strings
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*
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* @param string $string string to encode
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* @param string $encoding target encoding
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* @param string $line_break default line break is \r\n
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* @return string encoded string
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*/
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public static function __mbMimeEncode(
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string $string,
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string $encoding,
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string $line_break = "\r\n"
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): string {
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$current_internal_encoding = mb_internal_encoding();
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// set internal encoding, so the mimeheader encode works correctly
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mb_internal_encoding($encoding);
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// if a subject, make a work around for the broken mb_mimencode
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$pos = 0;
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// after 36 single bytes characters,
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// if then comes MB, it is broken
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// has to 2 x 36 < 74 so the mb_encode_mimeheader
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// 74 hardcoded split does not get triggered
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$split = 36;
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$_string = '';
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while ($pos < mb_strlen($string, $encoding)) {
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$output = mb_strimwidth($string, $pos, $split, "", $encoding);
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$pos += mb_strlen($output, $encoding);
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// if the strinlen is 0 here, get out of the loop
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if (!mb_strlen($output, $encoding)) {
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$pos += mb_strlen($string, $encoding);
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}
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$_string_encoded = mb_encode_mimeheader($output, $encoding);
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// only make linebreaks if we have mime encoded code inside
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// the space only belongs in the second line
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if ($_string && preg_match("/^=\?/", $_string_encoded)) {
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$_string .= $line_break . " ";
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} elseif (
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// hack for plain text with space at the end
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mb_strlen($output, $encoding) == $split &&
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mb_substr($output, -1, 1, $encoding) == " "
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) {
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// if output ends with space, add one more
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$_string_encoded .= " ";
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}
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$_string .= $_string_encoded;
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}
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// strip out any spaces BEFORE a line break
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$string = str_replace(" " . $line_break, $line_break, $_string);
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// before we end, reset internal encoding
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mb_internal_encoding($current_internal_encoding);
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// return mime encoded string
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return $string;
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}
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}
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// __END__
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