rcube_enriched.php
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<?php
/**
+-----------------------------------------------------------------------+
| This file is part of the Roundcube Webmail client |
| |
| Copyright (C) The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
| PURPOSE: |
| Helper class to convert Enriched to HTML format (RFC 1523, 1896) |
+-----------------------------------------------------------------------+
| Author: Aleksander Machniak <alec@alec.pl> |
| Author: Ryo Chijiiwa (IlohaMail) |
+-----------------------------------------------------------------------+
*/
/**
* Class for Enriched to HTML conversion
*
* @package Framework
* @subpackage Utils
*/
class rcube_enriched
{
protected static function convert_newlines($body)
{
// remove single newlines, convert N newlines to N-1
$body = str_replace("\r\n", "\n", $body);
$len = strlen($body);
$nl = 0;
$out = '';
for ($i=0; $i<$len; $i++) {
$c = $body[$i];
if (ord($c) == 10) {
$nl++;
}
if ($nl && ord($c) != 10) {
$nl = 0;
}
if ($nl != 1) {
$out .= $c;
}
else {
$out .= ' ';
}
}
return $out;
}
protected static function convert_formatting($body)
{
$replace = [
'<bold>' => '<b>', '</bold>' => '</b>',
'<italic>' => '<i>', '</italic>' => '</i>',
'<fixed>' => '<tt>', '</fixed>' => '</tt>',
'<smaller>' => '<font size=-1>', '</smaller>'=> '</font>',
'<bigger>' => '<font size=+1>', '</bigger>' => '</font>',
'<underline>' => '<span style="text-decoration: underline">', '</underline>' => '</span>',
'<flushleft>' => '<span style="text-align: left">', '</flushleft>' => '</span>',
'<flushright>' => '<span style="text-align: right">', '</flushright>' => '</span>',
'<flushboth>' => '<span style="text-align: justified">', '</flushboth>' => '</span>',
'<indent>' => '<span style="padding-left: 20px">', '</indent>' => '</span>',
'<indentright>' => '<span style="padding-right: 20px">', '</indentright>' => '</span>',
];
return str_ireplace(array_keys($replace), array_values($replace), $body);
}
protected static function convert_font($body)
{
$pattern = '/(.*)\<fontfamily\>\<param\>(.*)\<\/param\>(.*)\<\/fontfamily\>(.*)/ims';
while (preg_match($pattern, $body, $a)) {
if (count($a) != 5) {
continue;
}
$body = $a[1].'<span style="font-family: '.$a[2].'">'.$a[3].'</span>'.$a[4];
}
return $body;
}
protected static function convert_color($body)
{
$pattern = '/(.*)\<color\>\<param\>(.*)\<\/param\>(.*)\<\/color\>(.*)/ims';
while (preg_match($pattern, $body, $a)) {
if (count($a) != 5) {
continue;
}
// extract color (either by name, or ####,####,####)
if (strpos($a[2],',')) {
$rgb = explode(',', $a[2]);
$color = '#';
for ($i=0; $i<3; $i++) {
$color .= substr($rgb[$i], 0, 2); // just take first 2 bytes
}
}
else {
$color = $a[2];
}
// put it all together
$body = $a[1].'<span style="color: '.$color.'">'.$a[3].'</span>'.$a[4];
}
return $body;
}
protected static function convert_excerpt($body)
{
$pattern = '/(.*)\<excerpt\>(.*)\<\/excerpt\>(.*)/i';
while (preg_match($pattern, $body, $a)) {
if (count($a) != 4) {
continue;
}
$quoted = '';
$lines = explode('<br>', $a[2]);
foreach ($lines as $line) {
$quoted .= '>'.$line.'<br>';
}
$body = $a[1].'<span class="quotes">'.$quoted.'</span>'.$a[3];
}
return $body;
}
/**
* Converts Enriched text into HTML format
*
* @param string $body Enriched text
*
* @return string HTML text
*/
public static function to_html($body)
{
$body = str_replace('<<','<',$body);
$body = self::convert_newlines($body);
$body = str_replace("\n", '<br>', $body);
$body = self::convert_formatting($body);
$body = self::convert_color($body);
$body = self::convert_font($body);
$body = self::convert_excerpt($body);
//$body = nl2br($body);
return $body;
}
}