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Fast(3) User Contributed Perl Documentation Fast(3)

MIME::Fast - Parsing MIME messages (wrapper for C gmime library)

  use MIME::Fast;

  open (FH,"<test.eml") || die "Can not open test.eml: $!";
  
  # create a stream
  my $str = new MIME::Fast::Stream (\*FH);
  # do not use/close FH now
  # with gmime 2.0.8 close(FH) would even fail
  # after $str destruction
  
  # construct message object
  my $msg = MIME::Fast::Parser::construct_message ($str);

  $msg->set_subject ( 'Re: ' . $msg->get_subject () );

  print 'Content-Type of message is ' .
    $msg->get_mime_part->get_content_type->to_string . "\n";

  my $part = $msg->get_mime_part;
  print "Part=$part\n";
  
  if (ref $part eq 'MIME::Fast::MultiPart') {
    $part = $part->get_part(0,0);
    print "Subpart=$part\n";
  }

  my %header;
  tie %header, 'MIME::Fast::Hash::Header', $msg;
  
  $header{'From'} = 'John Doe <john@domain>';
  $header{'X-Info'} = 'Normal one arbitrary header';
  $header{'X-Info'} = ['This is','Multiline X-Info header'];
  
  print "X-Info: " . $header{'X-Info'};
  print "\n";
  print "X-Info header array: (" . join("; ", @{$header{'X-Info'}}) . ")\n";
  
  my $old_header = $header{'X-Info'};
  $header{'X-Info'} = [ 'First header', @{$old_header}, 'Last header'];

  print "X-Info header array: (" . join("; ", @{$header{'X-Info'}}) . ")\n";
  print "\n";
  print "-- NEW HEADERS:\n";
  print $msg->get_headers();

MIME::Fast is a perl module for creating, editing and parsing MIME messages. This module is based on the very good C library called gmime. MIME::Fast outght to be faster and should use less memory and CPU resources than standard MIME (perl module), because MIME::Fast is the wrapper for C functions (calling C function is much, much less expensive than calling perl function).

This is a reformatted snipped from the official GMime documentation:

  Not a real objects:

  MIME::Fast::ContentType
  MIME::Fast::Disposition
  MIME::Fast::Header
  MIME::Fast::Param
  MIME::Fast::Hash::Header    (only in perl module)

  Glib objects:

  MIME::Fast::DataWrapper
  MIME::Fast::Object
    MIME::Fast::Message
    MIME::Fast::MessagePartial
    MIME::Fast::Multipart
      MIME::Fast::MultipartEncrypted (not implemented yet)
      MIME::Fast::MultipartSigned    (not implemented yet)
    MIME::Fast::Part
      MIME::Fast::MessagePart
  MIME::Fast::Parser
  MIME::Fast::Stream
    MIME::Fast::StreamBuffer  (used internally)
    MIME::Fast::StreamCat     (not implemented)
    MIME::Fast::StreamFile    (used internally)
    MIME::Fast::StreamFilter  (used internally)
    MIME::Fast::StreamFs      (used internally)
    MIME::Fast::StreamMem     (not implemented)
    MIME::Fast::StreamMmap    (not implemented)
    MIME::Fast::StreamNull    (not implemented)
  MIME::Fast::Filter
    MIME::Fast::FilterBasic
    MIME::Fast::FilterBest
    MIME::Fast::FilterCharset
    MIME::Fast::FilterCRLF
    MIME::Fast::FilterEnriched
    MIME::Fast::FilterFrom
    MIME::Fast::FilterHTML
    MIME::Fast::FilterMd5
    MIME::Fast::FilterStrip
    MIME::Fast::FilterYenc
  MIME::Fast::CipherContext   (not implemented yet)
    MIME::Fast::GpgContext    (not implemented yet)
  MIME::Fast::Session         (not implemented yet)
    MIME::Fast::SessionSimple (not implemented yet)
  InternetAddress

new()
new(FILE)
new($mime_stream)
new($mime_datawrapper)
Class method. Create a new MIME::Fast::Message object. Such object have no headers or any mime parts. If you need to parse any message data use construct_message() method from the MIME::Fast::Parser submodule. The object is destroyed during the perl garbage collection. E.g.:

    my $msg = new MIME::Fast::Message;
    
construct_message(text)
construct_message(FILE)
construct_message($mime_stream)
new($mime_datawrapper)
Returns a MIME::Fast::Message class based on the given text, file handle, or MIME::Fast::Stream object.
construct_part(text)
construct_part(FILE)
construct_part(mime_stream)
Returns a MIME::Fast object (part, multipart, message part, etc.) class based on the given text, file handle, MIME::Fast::Stream or MIME::Fast::DataWrapper object.

NOTE: If the stream is seekable and persist_stream Parser parameter is TRUE (the default) then message is not loaded into memory.

init_with_stream($mime_stream)
Initializes parser to use $mime_stream.

NOTE: Anything that change state of the stream (offset etc.) is prohibited. To test the stream offset you should use MIME::Fast::Parser::tell() instead of MIME::Fast::Stream::tell().

set_persist_stream(TRUE | FALSE)
get_persist_stream()
Sets or gets whether or not the underlying stream is persistant. Persistent means that stream content would not be loaded into memory if the stream is seekable.
set_scan_from(TRUE | FALSE)
get_scan_from()
Sets or gets whether or not parser should scan mbox-style From-lines.
set_header_regex($regex, $header_cb, $user_data)
Sets the regular expression pattern $regex on parser. Whenever a header matching the pattern $regex is parsed, function $header_cb is called with $user_data as the user_data argument.

NOTE: Regular expression used here is NOT a Perl regex. It is internally used with regexec() function.

tell
Gets the current stream offset from the parser's internal stream.
eos
Tests the end-of-stream indicator for parser's internal stream.
get_from
Gets the mbox-style From-line of the most recently parsed message (gotten from MIME::Fast::Parser::construct_message()).
get_from_offset
Gets the offset of the most recently parsed mbox-style From-line (gotten from MIME::Fast::Parser::construct_message()).

new()
new(pretty_headers)
Class method. Create a new MIME::Fast::Message object. Such object have no headers or any mime parts. If you need to parse any message data use construct_message() method from the MIME::Fast::Parser submodule. Optional parameter pretty_headers (default 0) if set to 1, initializes friendly order of the header items. The object is destroyed during the perl garbage collection. E.g.:

    my $msg = new MIME::Fast::Message;
    
set_sender(address)
get_sender()
Set and get the sender's name and address on the MIME::Fast::Message object. E.g.

    $msg->set_sender("\"Joe Sixpack\" <joe\@sixpack.org>");
    $sender = $msg->get_sender;
    
set_reply_to(address)
get_reply_to(address)
Set and get the sender's Reply-To address of the MIME message.
add_recipient(type, name, email)
Add a recipient of a chosen type to the MIME Message. Available recipient types include: GMIME_RECIPIENT_TYPE_TO, GMIME_RECIPIENT_TYPE_CC and GMIME_RECIPIENT_TYPE_BCC.
add_recipients_from_string(type, string)
Add recipients of a chosen type to the MIME Message. E.g.:

    $msg->add_recipients_from_string(GMIME_RECIPIENT_TYPE_TO,
        "\"Mickey Mouse\" <mickey\@example>," .
        "\"John Doe\" <john\@home>");
    
get_recipients(type)
Returns a list of recipients of a chosen type from the MIME Message. The type parameter is the same as in the add_recipient() method.
set_subject(subject)
get_subject()
Set and get the subject of the MIME message.
set_date(date, gmt_offset)
set_date_from_string(str)
Set the sent-date on the MIME message. You can give a date string or the numbers (time in seconds and offset in hours and minutes). E.g.

    $msg->set_date(991697409, '+0100');
    $msg->set_date("Wed, 7 Mar 2001 03:00:01 +0100 (CET)");
    
get_date()
Get the sent-date of the MIME message. In scalar context returns date as a string value, otherwise two element array - time in seconds and gmt_offset.
set_message_id(message_id)
get_message_id()
Set and get the Message-Id of the message.
set_header(field, value)
Set a message header to the MIME Message. This can be such headers as X-Mailer, X-Priority, or In-Reply-To as well as From etc. If you want to delete any header - use remove_header() method.
add_header(field, value)
Add a header to the message header.
remove_header(field)
Removes the given field from the message header.
get_header(field)
Get the header from the MIME message. This is the only (besides the tied header hash) way you can retrieve any arbitrary header (as X-Mailer etc.). Other headers can be accessed also with e.g. get_sender (From header), get_content_type (MIME::Fast::Part method), etc.
set_mime_part(mime_part)
get_mime_part()
Set and get the root-level MIME part of the message. Parameter mime_part should be valid MIME::Fast::Object object.

NOTE: get_mime_part() does not exists in C gmime library.

get_body(want_plain = 1, is_html = 0)
Returns the body of the message. Parameters are optional. If want_plain is 1 (default) plain text is returned. If HTML is in the return string, is_html is set to 1. Binary parts are omitted.
get_headers()
Returns an allocated string containing the raw message headers.
foreach_part(function, data)
Calls callback on each of the mime parts in the mime message. Parameters: function is the reference to the callback function, and data is a scalar (or any reference) that would be passed to each callback function call. E.g.:

    $msg->foreach_part(\&parse,$data);
    

MIME::Fast::Header is a private structure. This structure contains all the headers except special ones (Content-* MIME-Version). Look for "Header tied hash" for easy maintaining for header. Use also the MIME::Fast::Message::get_header() and set_header() methods.

new ()
new (type = "text", subtype = "plain")
Class method. Create a new MIME::Fast::Part object (MIME part). It supports a few special headers (Content-* and MIME-Version), and has contents of specified type. If you do not issue any parameter to the new function, "text/plain" would be the default type for the new MIME::Fast::Part object.
set_content_header ($header)
get_content_header ()
Sets or gets an arbitrary MIME content header.
set_content_description (description)
get_content_description ()
Set and get content description (Content-Description) on the MIME part.
set_content_md5 (content_md5)
verify_content_md5 ()
get_content_md5 ()
Set, get and verify content MD5 hash (Content-MD5) on the MIME part contents.
set_content_location (location)
get_content_location ()
Set and get content location (Content-Location) on the MIME part.
set_encoding (encoding)
encoding_from_string (encoding_string)
get_encoding ()
encoding_to_string ()
Set and get encoding on the MIME part. Encoding could be one of these constants (or strings):

    GMIME_PART_ENCODING_DEFAULT # string '8 bit'
    GMIME_PART_ENCODING_7BIT # string '7 bit'
    GMIME_PART_ENCODING_8BIT # '8 bit'
    GMIME_PART_ENCODING_BASE64 # 'base64'
    GMIME_PART_ENCODING_QUOTEDPRINTABLE # 'quoted-printable'
    

E.g. MIME::Fast::Part::encoding_to_string("GMIME_PART_ENCODING_BASE64");

set_content_disposition (disposition)
set_content_disposition_object (MIME::Fast::Disposition)
get_content_disposition ()
get_content_disposition ()
Set and get content disposition (Content-Disposition) on the MIME part. As the parameter one can issue usualy 'inline' or 'attachment'. Function get_content_disposition() returns only the main part of this header (no parameters).
add_content_disposition_parameter (name, value)
get_content_disposition_parameter (name)
Add and get content disposition parameter.
set_filename (filename)
Add the 'filename' content disposition parameter to the Content-Disposition header, and 'name' parameter to the Content-Type header.
get_filename ()
Get filename suggested by the MIME part headers (either from the Content-Disposition or Content-Type header).
set_content (content_object)
Set content of the MIME part based on the supplied argument (text MIME::Fast::Stream object, MIME::Fast::DataWrapper object or FILEHANDLE).
get_content ()
Get text content of the MIME part (readonly).
get_content_object ()
Get MIME::Fast::DataWrapper object of the MIME part.
set_pre_encoded_content (content, encoding)
Set pre-encoded content on the MIME part. The 'encoding' parameter can have values described in encoding_to_string() function above. These function are used by the parser. You can write your own.

new ()
new (subtype = "mixed")
Class method. Creates a new MIME::Fast::MultiPart object with a default content-type of multipart/mixed.
set_preface (text)
get_preface ()
Sets or gets the preface on the multipart.
set_postface (text)
get_postface ()
Sets or gets the postface on the multipart.
set_boundary (boundary)
get_boundary ()
Set and get boundary on the MIME part.
get_number ()
Gets the number of mime parts contained within the multipart.
add_part (MIME::Fast::Object, $index = 0)
Adds a mime part to the multipart at the position $index.
remove_part (MIME::Fast::Object | $index = 0)
Remove child part from the MIME part or remove child part at the position $index.
get_subpart_from_content_id (content_id)
Get subpart (MIME::Fast::Part object) for the given Content-Id header value.
children
children (index)
parts
parts (index)
(Alias functions - do the same) Returns the number of children parts (just like get_number() ) in the MIME::Fast::MultiPart in scalar contents. In array context returns the array of subparts. If the index number argument is given, method returns subpart of that index. Numbers are counted from 0 to number of parts minus one.
get_part (index, ...)
Instance method. Returns the subpart from the multipart mime part based on the given index number/s. E.g.

    mime_part->get_part(0,2,1)
    

would return the "X" part:

  message
  +--- mime_part
    |
    +--- part "0" (multipart/*)
    | |
    | +--- part "0,0"
    | +--- part "0,1"
    | +--- part "0,2"
    | | |
    | | +--- part "0,2,0"
    | | +--- part "0,2,1" ("X")
    | | +--- part "0,2,2"
    | +--- part "0,3"
    +--- part "1" (message/rfc822)
      +--- part "1,0"
      +--- part "1,1"
    +--- part "2"
    

The function can return MIME::Fast::Part, MIME::Fast::MultiPart, MIME::Fast::MessagePartial, MIME::Fast::MessagePart or any other MIME::Fast::Object object.

foreach_part (callback, data)
Call the given subroutine for the MIME part and its subparts (if any). The 'data' parameter would be forwarded to the called function. E.g.

    sub mime_sub {
      my ($mime, $data) = @_;
      my $type = $mime->get_content_type;
      $type = $type->to_string;
      print "mime_sub($mime): type $type\n";
    };

    $part->foreach_part(\&mime_sub, "none");
    

This is the base class for MIME::Fast objects (messages, parts, multiparts, filters, streams etc.).

set_content_type ($type)

get_content_type ()

Set and get content type on the MIME::Fast::Object. The 'type' parameter should be a MIME::Fast::ContentType object. E.g.

    $type = $part->get_content_type;
    print "Type of $part is " . $type->to_string;

set_content_type_parameter ($name, $value)

get_content_type_parameter ($name)

Sets or gets the value of the content-type param $name set on the MIME part object.

set_content_id (content_id)

get_content_id ()

Set and get content id (Content-Id) on the MIME part object.

set_header(field, value)

Set a message header to the MIME object.

add_header(field, value)

Add a header field to the MIME object header.

remove_header(field)

Removes the given field from the header.

get_header(field)

Gets the value of the requested header.

get_content_length ($method = 0)

Get content length of the MIME object. You can affect the return value with the 'method' parameter:

    1 (or GMIME_LENGTH_ENCODED) - encoded content length;
    2 (or GMIME_LENGTH_CUMULATIVE) - length of all the children
       parts (if any);

You can combine the above two constants. By default the return value is only the length of the current parsed (already decoded) content. E.g.:

    $len = $part->get_content_length();
    $len = $part->get_content_length(GMIME_LENGTH_ENCODED);
    $len = $part->get_content_length(3); # same as below
    $len = $part->get_content_length(GMIME_LENGTH_ENCODED |
        GMIME_LENGTH_CUMULATIVE);

NOTE: This methoid does not exists in the C gmime.

NOTE: Encoded content length is only prediction, not the exact number of bytes you would get after final encoding. Predicted encoded length is greater or equal to size of the encoded parts, though. The length of the part/message headers is not counted.

is_multipart ()

Returns 1 if the MIME object is of type multipart, 0 otherwise.

NOTE: This methoid does not exists in the C gmime.

effective_type ()

Returns content type of the given object as a lowercase text string.

NOTE: This methoid does not exists in the C gmime.

write_to_stream ($mime_stream_dst)

Writes the contents of the MIME object to a MIME stream.

to_string()

Returns the contents of the MIME object as a string.

new (type, subtype)
new (str)
Create new MIME::Fast::ContentType object with type of 'type/subtype' or type read from the string 'str'.
type ()
Get the 'type' part (string) of the MIME::Fast::ContentType object. NOTE: this method is not in gmime C library.
subtype ()
Get the 'subtype' part (string) of the MIME::Fast::ContentType object. NOTE: this method is not in gmime C library.
to_string ()
Get the string representation for the MIME::Fast::ContentType object.
is_type (type, subtype)
Returns 1 if content type match the given type and subtype, 0 otherwise. You can use '*' in place of type or subtype as a wildcard. This function is case insensitive. E.g.

    $is_multipart = $content_type->is_type('multipart','*');
    $is_text = $content_type->is_type('text','*');
    
add_parameter (attribute, value)
get_parameter ()
Add and get parameter to/of the content type header. E.g.

    $content_type->add_parameter('name', 'test.gif');
    

new (name, value)
new (str)
Create new MIME::Fast::Param object with the given pair 'name' and 'value', or from the given string. E.g. $param = new MIME::Fast::Param('name="test.gif"');
append (name, value)
Appends a new parameter with name $name and value $value to the parameter list.
append_param (MIME::Fast::Param)
Appends $param object to the param list.
write_to_string ($fold, $string)
Assumes the output string $string contains only the Content-* header and it's immediate value. Argument $fold specifies whether or not to fold headers.

header_decode_date (date, offset)
For the given string 'data', the number of seconds is returned (since 1.1.1970). If offset is defined the zone offset is stored in the $offset variable. E.g.

    $t = MIME::Fast::Utils::header_decode_date(
        "Mon, 14 May 2001 22:20 -0400", $off);
    print "Time = $t offset = $off\n";
    Time = 989893200 offset = -400
    
header_format_date (time, offset)
Returns a valid string representation of the date.
generate_message_id (fqdn)
Generates a unique string in an addr-spec format suitable for use as a Message-Id.
decode_message_id (message_id)
Decodes a msg-id as defined by rfc822.
header_fold (headers)
Return the text of folded headers.
quote_string (str)
Returns the quoted and escaped string. The decision to quote the string is based on whether or not the input string contains any 'tspecials' as defined by rfc2045.
unquote_string (str)
Unquotes and unescapes string (no value is returned).
text_is_8bit (str)
Returns 1 (TRUE) is the string has any 8bit characters, 0 otherwise.
best_encoding (str)
Returns best (in means of compression size) encoding type for the given string. Look into description of MIME::Fast::Part::get_encoding() for possible return values.
header_decode_text (header)
Decodes an rfc2047 encoded 'text' header. Returns the decoded header (which will be in UTF-8 if at all possible).
header_decode_phrase (header)
Decodes an rfc2047 encoded 'phrase' header. Returns the decoded header (which will be in UTF-8 if at all possible).
header_encode_text (header)
Encodes a 'text' header according to the rules in rfc2047. Useful for encoding headers like "Subject".
header_encode_phrase (header)
Encodes a 'phrase' header according to the rules in rfc2047. Useful for encoding internet addresses.

new ()
new (mime_stream, encoding)
Creates new MIME::Fast::DataWrapper object. Optional arguments are MIME stream object and encoding type.
set_stream (mime_stream)
Replaces the wrapper's internal stream.
get_stream ()
Returns a reference to the internal MIME stream.
set_encoding (encoding)
Set the content encoding for the MIME data wrapper object. Encoding type is the same as listed in encoding_to_string() function.
get_encoding (encoding)
Get the content encoding.

new ()
new (text | FILEHANDLE)
new (text | FILEHANDLE, start, end)
Creates new MIME::Fast::Stream object either for string or FILEHANDLE.
substream (mime_stream, start, end)
Creates new MIME stream object as a substream with given start and end offsets.
set_bounds (start, end)
Set bounds on the MIME stream.
write_string (str)
Writes a string str to the MIME stream.
write_to_stream (mime_stream_dst)
Writes the contents of the source MIME stream to the destination MIME stream.

Low level MIME::Stream manipulation:

eos (mime_stream)
Tests the end-of-stream indicator for strem.
reset (mime_stream)
Resets the stream.
seek (mime_stream, offset, whence)
Repositions the offset of the stream to the argument $offset to the directive $whence as follows:

    GMIME_STREAM_SEEK_SET: The offset is set to $offset bytes.
    GMIME_STREAM_SEEK_CUR: The offset is set to its current
      location plus $offset bytes.
    GMIME_STREAM_SEEK_END: The offset is set to the size of the
      stream plus $offset bytes.
    

Returns the resultant position on success or -1 on fail.

tell (mime_stream)
Gets the current offset within the stream.
length (mime_stream)
Returns length of the MIME stream.
read (mime_stream, buf, len)
Attempts to read up to $len bytes from stream into $buf. Returns number of bytes read.
write (mime_stream, buf, len)
Attempts to write up to $len bytes of $buf to stream. Returns number of bytes written.
flush (mime_stream)
Sync's the stream to disk. Returns 0 on success or -1 on fail.
close (mime_stream)
Closes the stream. Returns 0 on success or -1 on fail.

new (name, address)
new (group)
new (group)
Creates new MIME::Fast::InternetAddress object either for the given group name (group address) or for the given name and address. You can also create empty object and add addresses later with set_* methods.
parse_string (str)
Parse string and return an array of MIME::Fast::InternetAddress objects.
to_string (encode = 1)
Return string representation for the MIME::Fast::InternetAddress object If the boolean 'encode' parameter is 1, high bit characters are encoded with BASE64 or Q-P (as iso-8859-1). If you want other charsets use MIME::Fast::Charset::init() method.
set_name (name)
set_addr (addr)
Set name or address portion of the MIME::Fast::InternetAddress object.
set_group (IA object array)
Set the addresses for the group MIME::Fast::InternetAddress object. As the parameters there should be used an array of MIME::Fast::InternetAddress objects.
add_member (IA object)
Add a member to the group MIME::Fast::InternetAddress object.
type ()
Returns the type of MIME::Fast::InternetAddress object - INTERNET_ADDRESS_NAME or INTERNET_ADDRESS_GROUP (group object), or INTERNET_ADDRESS_NONE.

init ()
Initializes the locale charset variable for later calls to gmime_charset_locale_name. Only really needs to be called for non- iso-8859-1 locales. If you need iso-8859-2 charset, set LC_ALL locale variable to e.g. "pl_PL.iso-8859-2" string before calling this function.
MIME::Fast::locale_charset ()
Returns the user's locale charset (iso-8859-1 is default).
MIME::Fast::locale_language ()
Returns the user's locale language code.
language (charset)
Attempts to find a specific language code that is specific to charset. Currently only handles CJK and Russian/Ukranian charset->lang mapping. Everything else will return undef.
map_init ()
Initializes the locale charset variable for later calls. Only really needs to be called for non-iso-8859-1 locales.
best_name ()
Gets the best charset name based on the charset mask. Returns string containing the best charset name that can represent the charset mask.
best ()
Computes the best charset to use to encode this text buffer. Returns the charset name best suited for the input text or undef if it is US-ASCII safe.

new (subtype = "rfc822" [, message])
Creates a new MIME message part object with a default content-type of message/$subtype (optionally containing $message object).
set_message (message)
get_message ()
Sets or gets the MIME::Fast::Message object on the message part object.

new ()
Creates a new MIME message/partial object.
get_id ()
Gets the message/partial id parameter value (or undef on fail).
get_number ()
Gets the message/partial part number (or -1 on fail).
get_total ()
Gets the total number of message/partial parts needed to reconstruct the original message (or -1 on fail).
reconstruct_message (@partials)
Reconstructs the MIME::Fast::Message object from the given message/partial parts (the array of MIME::Fast::MessagePartial or MIME::Fast::Message objects).
split_message (message, max_size)
Splits message into an array of MIME::Fast::Message objects each containing a single MIME::Fast::MessagePartial object containing $max_size bytes or fewer.

new (disposition)
Creates a new MIME::Fast::Disposition object from the $disposition string.
set (value)
Sets the disposition to $value which may be one of GMIME_DISPOSITION_ATTACHMENT or GMIME_DISPOSITION_INLINE or, by your choice, any other string which would indicate how the MIME part should be displayed by the MUA.
get ()
Returns the disposition string which is probably one of GMIME_DISPOSITION_ATTACHMENT or GMIME_DISPOSITION_INLINE.
add_parameter (name, value)
Adds a new parameter of name $name and value $value to the disposition.
get_parameter (name)
Gets the value of the parameter $name.
header (fold)
Returns a string containing the disposition header (if $fold is TRUE, then header is optionally folded).

new (mime_stream)
Creates a new MIME::Fast::Stream::Filter object using stream as the source stream.
add (filter)
Adds a MIME::Fast::Filter to stream. Returns an id for the filter.
remove (filter)
Removed a filter from the stream based on the id (as returned from $streamfilter->add).

Base class for the other filter classes.
copy ()
Returns a duplicate of the filter.
reset ()
Resets a filter.
set_size (size, keep)
Ensure this much size available for filter output (if required). If $keep is 1 then current buffered data is preserved.

($type)
Creates a new filter of $type: GMIME_FILTER_BASIC_BASE64_ENC, GMIME_FILTER_BASIC_BASE64_DEC, GMIME_FILTER_BASIC_QP_ENC, GMIME_FILTER_BASIC_QP_DEC, GMIME_FILTER_BASIC_UU_ENC, GMIME_FILTER_BASIC_UU_DEC.

new (flags)
Creates a new MIME::Fast::Filter::Best filter. $flags are used to determine which information to keep statistics of. If the GMIME_FILTER_BEST_CHARSET bit is set, the filter will be able to compute the best charset for encoding the stream of data filtered. If the GMIME_FILTER_BEST_ENCODING bit is set, the filter will be able to compute the best Content-Transfer-Encoding for use with the stream being filtered.

Note: In order for the MIME::Fast::Filter::Best::charset() function to work, the stream being filtered MUST already be encoded in UTF-8.

charset ()
Calculates the best charset for encoding the stream.
encoding (required)
Calculates the best Content-Transfer-Encoding for the stream filtered through $best that fits within the $required encoding. $required arguments can have the following values: GMIME_BEST_ENCODING_7BIT, GMIME_BEST_ENCODING_8BIT, GMIME_BEST_ENCODING_BINARY.

new (from_charset, to_charset)
Creates a new MIME::Fast::Filter::Charset filter.

new (direction, mode)
$direction argument can have the following values: GMIME_FILTER_CRLF_ENCODE, GMIME_FILTER_CRLF_DECODE. $mode argument can have the following values: GMIME_FILTER_CRLF_MODE_CRLF_DOTS, GMIME_FILTER_CRLF_MODE_CRLF_ONLY. Returns a new crlf(/dot) filter.

new (flags = 0)
Creates a new MIME::Fast::Filter::Enriched filter. This filter can be used to convert text/enriched and text/rtf to text/html. optional $flags argument can have the following values: GMIME_FILTER_ENRICHED_IS_RICHTEXT (if the content is already enriched).

new (mode)
Creates a new GMimeFilterFrom filter. If $mode is GMIME_FILTER_FROM_MODE_ARMOR, the from-filter will encode from lines using the quoted-printable encoding resulting in "=46rom ". Using the GMIME_FILTER_FROM_MODE_DEFAULT or GMIME_FILTER_FROM_MODE_ESCAPE mode (they are the same), from lines will be escaped to ">From ".

Note: If you plan on using a from-filter in mode ARMOR, you should remember to also use a MIME::Fast::Filter::Basic filter with mode GMIME_FILTER_BASIC_QP_ENC.

new (flags, colour)
Creates a new MIME::Fast::Filter::HTML filter which can be used to convert a plain UTF-8 text stream into an html stream. $flags argument can have the following values:

  GMIME_FILTER_HTML_PRE          Wrap stream in <pre> tags
  GMIME_FILTER_HTML_CONVERT_NL   Convert new-lines ('\n') into <br> tags.
  GMIME_FILTER_HTML_CONVERT_SPACES Preserve whitespace by converting spaces
    into their appropriate html entities.
  GMIME_FILTER_HTML_CONVERT_URLS Wrap detected URLs in <a href=...> tags.
  GMIME_FILTER_HTML_MARK_CITATION Change the colour of citation text.
  GMIME_FILTER_HTML_CONVERT_ADDRESSES Wrap email addresses in "mailto:" href tags.
  GMIME_FILTER_HTML_ESCAPE_8BIT Converts 8bit characters to '?'.
  GMIME_FILTER_HTML_CITE        Cites text by prepending "> " to each cited line.
    

Gmime supports only one colour for citation text (as of version 2.0.8).

new ()
Creates a new Md5 filter.
get_digest ()
Returns MD5 digest.

new ()
Returns a new strip filter (for stripping whitespaces from the beggining and end of the lines).

NOTE: MIME::Fast::Filter::Windows is available since gmime version 2.1.0.
new (claimed_charset)
Creates a new MIME::Fast::Filter::Windows filter. When a stream of text has been filtered, it can be determined whether or not said text stream was in claimed_charset or the equivalent Windows-CP125# charset.
is_windows_charset ()
Determines whether or not a Windows-CP125# charset has been detected so far. Returns: true if the filtered stream has been detected to contain Windows-CP125# charset.
real_charset ()
Figures out the real charset that the text is encoded in based on whether or not Windows-CP125# characters were found.

Returns a const string pointer to the claimed charset if filtered text stream was found not to contain any Windows-CP125# characters or the proper Windows-CP125# charset.

new (direction)
Creates a new yEnc filter. $direction argument can have the following values: GMIME_FILTER_YENC_DIRECTION_ENCODE, GMIME_FILTER_YENC_DIRECTION_DECODE.

Instead of get_header() and set_header() methods of MIME::Fast::Message object you can use tied hash array for message header access (i.e. all the normal headers except Content-* and MIME-Version).

This class is used only for tied header hash. You should not call any method directly, that is why I would not describe that methods here. All that you should know is that this class is constructed exactly as suggested in perltie. Then you can use tied hash as if it is normal hash variable.

E.g.

    $msg = MIME::Fast::Parser->construct_message($stream);
    tie %header, 'MIME::Fast::Hash::Header', $msg;
    $header{'From'} = 'John Doe <john@domain>';
    undef $header{'From'}; # delete From header from the message
    %header = (); # clear all the headers
    undef %header; # headers are not lost, just the hash

    GMIME_LENGTH_ENCODED
    GMIME_LENGTH_CUMULATIVE

    GMIME_PART_ENCODING_DEFAULT
    GMIME_PART_ENCODING_7BIT
    GMIME_PART_ENCODING_8BIT
    GMIME_PART_ENCODING_BASE64
    GMIME_PART_ENCODING_QUOTEDPRINTABLE
    GMIME_PART_NUM_ENCODINGS

    GMIME_RECIPIENT_TYPE_TO
    GMIME_RECIPIENT_TYPE_CC
    GMIME_RECIPIENT_TYPE_BCC

    INTERNET_ADDRESS_NONE
    INTERNET_ADDRESS_NAME
    INTERNET_ADDRESS_GROUP

This module MIME::Fast requires perl 5.8.x and gmime 2.0.9 or higher.

If something goes wrong, you can edit Fast.xs file, and recompile gmime_debug static variable set to 1, to see some debug messages during object creation, destruction etc.

Quoted-printable binary parts could be wrongly decoded (when the new line is "\n" instead of "\r\n", and there is no equal sign at the end of line. RFC says that binary parts should be encoded with BASE64 not Q-P (it is also best compression for such parts). Then there is no harm.

Piotr Klaban, post@klaban.torun.pl

perl(1).

The homepage of gmime C library at http://spruce.sourceforge.net/gmime/ The homepage of MIME::Fast perl module is available at http://search.cpan.org/dist/MIME-Fast/

Hey! The above document had some coding errors, which are explained below:
Around line 591:
You can't have =items (as at line 596) unless the first thing after the =over is an =item
2004-12-16 perl v5.32.1

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