Can #2 be used to set directionality of message display?

A.L.E.C wrote:
> There're problems with attachment names in parts without charset 
> specification. Example message can be found here 
> http://trac.roundcube.net/ticket/1484969
> 
> I think we have two solutions:
> 1. Check charset of first (all) part(s) of message and convert filename 
> according to it, but what when there's no charset data?
> 2. Detect charset using ie. mb_detect_encoding().
> 
> Here's a patch for 2.
> 
> diff -ruN rc-beta3/program/include/rcube_imap.php 
> rc-beta2/program/include/rcube_imap.php
> --- rc-beta3/program/include/rcube_imap.php   2008-06-06 10:20:39.672800689 
> +0200
> +++ rc-beta2/program/include/rcube_imap.php   2008-06-06 09:39:49.031952834 
> +0200
> @@ -1159,10 +1159,13 @@
>        if (is_array($part[8]) && empty($struct->parts))
>          $struct->parts[] = $this->_structure_part($part[8], ++$count, 
> $struct->mime_id);
>        }
> -      
> +
>      // normalize filename property
>      if ($filename_mime = $struct->d_parameters['filename'] ? 
> $struct->d_parameters['filename'] : $struct->ctype_parameters['name'])
> -      $struct->filename = rcube_imap::decode_mime_string($filename_mime, 
> $this->default_charset);
> +    {
> +      $struct->filename = rcube_imap::decode_mime_string($filename_mime, 
> +         $struct->charset ? $struct->charset : 
> rc_detect_encoding($filename_mime, $this->default_charset));
> +    }
>      else if ($filename_encoded = $struct->d_parameters['filename*'] ? 
> $struct->d_parameters['filename*'] : $struct->ctype_parameters['name*'])
>      {
>        // decode filename according to RFC 2231, Section 4
> @@ -1170,7 +1173,8 @@
>        $struct->filename = 
> rcube_charset_convert(urldecode($filename_urlencoded), $filename_charset);
>      }
>      else if (!empty($struct->headers['content-description']))
> -      $struct->filename = 
> rcube_imap::decode_mime_string($struct->headers['content-description'], 
> $this->default_charset);
> +      $struct->filename = 
> rcube_imap::decode_mime_string($struct->headers['content-description'],
> +         $struct->charset ? $struct->charset : 
> rc_detect_encoding($struct->headers['content-description'],$this->default_charset));
>        
>      return $struct;
>      }
> diff -ruN rc-beta3/program/include/rcube_shared.inc 
> rc-beta2/program/include/rcube_shared.inc
> --- rc-beta3/program/include/rcube_shared.inc 2008-06-06 10:20:39.416799300 
> +0200
> +++ rc-beta2/program/include/rcube_shared.inc 2008-06-06 10:07:39.177963387 
> +0200
> @@ -581,4 +581,33 @@
>      return $mime_type;
>  }
>  
> -?>
> \ Brak znaku nowej linii na ko�cu pliku
> +
> +/**
> + * A method to guess encoding of a string.
> + *
> + * @param string $string             String.
> + * @param string $failover   Default result for failover.
> + *
> + * @return string
> + */
> +function rc_detect_encoding($string, $failover='')
> +{
> +    if (!function_exists('mb_detect_encoding')) {
> +        return $failover;
> +    }
> +
> +    // FIXME: the order is important, because sometimes 
> +    // iso string is detected as euc-jp and etc.
> +    $enc = array(
> +     'UTF-8', 'ISO-8859-1', 'ISO-8859-2', 'ISO-8859-3', 'ISO-8859-4',
> +     'ISO-8859-5', 'ISO-8859-6', 'ISO-8859-7', 'ISO-8859-8', 'ISO-8859-9',
> +     'ISO-8859-10', 'ISO-8859-13', 'ISO-8859-14', 'ISO-8859-15', 
> 'ISO-8859-16',
> +     'WINDOWS-1252', 'WINDOWS-1251', 'EUC-JP', 'EUC-TW', 'KOI8-R'
> +    );
> +
> +    $result = mb_detect_encoding($string, join(',', $enc));
> +
> +    return $result ? $result : $failover;
> +}
> +
> +?>
> 

-- 
Moshe Leibovitch
CEO
MLN Computerized Systems Ltd.
Email:  [EMAIL PROTECTED]
Skype:  Moshe.Leibovitch
Mobile: +972-546-484411
Phone:  +972-3-5407371
Fax:    +972-1533-5407371

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