# mime(n) 1.3.2 mime "Mime"

## NAME

mime - Manipulation of MIME body parts

## SYNOPSIS

package require Tcl
package require mime ?1.3.2?

::mime::initialize ?-canonical type/subtype ?-param {key value}...? ?-encoding value? ?-header {key value}...?? (-file name | -string value | -parse {token1 ... tokenN})
::mime::finalize token ?-subordinates all | dynamic | none?
::mime::getproperty token ?property | -names?
::mime::getheader token ?key | -names?
::mime::setheader token key value ?-mode write | append | delete?
::mime::getbody token ?-command callback ?-blocksize octets??
::mime::copymessage token channel
::mime::buildmessage token
::mime::parseaddress string
::mime::parsedatetime (string | -now) property
::mime::mapencoding encoding_name
::mime::reversemapencoding charset_type

## DESCRIPTION

The mime library package provides the commands to create and manipulate MIME body parts.

::mime::initialize ?-canonical type/subtype ?-param {key value}...? ?-encoding value? ?-header {key value}...?? (-file name | -string value | -parse {token1 ... tokenN})
  This command creates a MIME part and returns a token representing it.
  - If the -canonical option is present, then the body is in canonical (raw) form and is found by consulting either the -file, -string, or -part option.
    In addition, both the -param and -header options may occur zero or more times to specify Content-Type parameters (e.g., charset) and header keyword/values (e.g., Content-Disposition), respectively.
    Also, -encoding, if present, specifies the Content-Transfer-Encoding when copying the body.
  - If the -canonical option is not present, then the MIME part contained in either the -file or the -string option is parsed, dynamically generating subordinates as appropriate.
::mime::finalize token ?-subordinates all | dynamic | none?
  This command destroys the MIME part represented by token. It returns an empty string.
  If the -subordinates option is present, it specifies which subordinates should also be destroyed. The default value is dynamic, destroying all subordinates which were created by ::mime::initialize together with the containing body part.
::mime::getproperty token ?property | -names?
  This command returns a string or a list of strings containing the properties of a MIME part. If the command is invoked with the name of a specific property, then the corresponding value is returned; instead, if -names is specified, a list of all properties is returned; otherwise, a serialized array of properties and values is returned.
  The possible properties are:
  content
    The type/subtype describing the content
  encoding
    The &quot;Content-Transfer-Encoding&quot;
  params
    A list of &quot;Content-Type&quot; parameters
  parts
    A list of tokens for the part's subordinates. This property is present only if the MIME part has subordinates.
  size
    The approximate size of the content (unencoded)
::mime::getheader token ?key | -names?
  This command returns the header of a MIME part, as a list of strings.
  A header consists of zero or more key/value pairs. Each value is a list containing one or more strings.
  If this command is invoked with the name of a specific key, then a list containing the corresponding value(s) is returned; instead, if -names is specified, a list of all keys is returned; otherwise, a serialized array of keys and values is returned. Note that when a key is specified (e.g., &quot;Subject&quot;), the list returned usually contains exactly one string; however, some keys (e.g., &quot;Received&quot;) often occur more than once in the header, accordingly the list returned usually contains more than one string.
::mime::setheader token key value ?-mode write | append | delete?
  This command writes, appends to, or deletes the value associated with a key in the header. It returns a list of strings containing the previous value associated with the key.
  The value for -mode is one of:
  write
    The key/value is either created or overwritten (the default).
  append
    A new value is appended for the key (creating it as necessary).
  delete
    All values associated with the key are removed (the value parameter is ignored).
::mime::getbody token ?-command callback ?-blocksize octets??
  This command returns a string containing the body of the leaf MIME part represented by token in canonical form.
  If the -command option is present, then it is repeatedly invoked with a fragment of the body as this:

        uplevel #0 $callback [list "data" $fragment]

  (The -blocksize option, if present, specifies the maximum size of each fragment passed to the callback.)
  When the end of the body is reached, the callback is invoked as:

        uplevel #0 $callback "end"

  Alternatively, if an error occurs, the callback is invoked as:

        uplevel #0 $callback [list "error" reason]

  Regardless, the return value of the final invocation of the callback is propagated upwards by mime::getbody.
  If the -command option is absent, then the return value of ::mime::getbody is a string containing the MIME part's entire body.
::mime::copymessage token channel
  This command copies the MIME represented by token part to the specified channel. The command operates synchronously, and uses fileevent to allow asynchronous operations to proceed independently. It returns an empty string.
::mime::buildmessage token
  This command returns the MIME part represented by token as a string. It is similar to ::mime::copymessage, only it returns the data as a return string instead of writing to a channel.
::mime::parseaddress string
  This command takes a string containing one or more 822-style address specifications and returns a list of serialized arrays, one element for each address specified in the argument. If the string contains more than one address they will be separated by commas.
  Each serialized array contains the properties below. Note that one or more of these properties may be empty.
  address
    local@domain
  comment
    822-style comment
  domain
    the domain part (rhs)
  error
    non-empty on a parse error
  group
    this address begins a group
  friendly
    user-friendly rendering
  local
    the local part (lhs)
  memberP
    this address belongs to a group
  phrase
    the phrase part
  proper
    822-style address specification
  route
    822-style route specification (obsolete)
::mime::parsedatetime (string | -now) property
  This command takes a string containing an 822-style date-time specification and returns the specified property as a serialized array.
  The list of properties and their ranges are:
  hour
    0 .. 23
  lmonth
    January, February, ..., December
  lweekday
    Sunday, Monday, ... Saturday
  mday
    1 .. 31
  min
    0 .. 59
  mon
    1 .. 12
  month
    Jan, Feb, ..., Dec
  proper
    822-style date-time specification
  rclock
    elapsed seconds between then and now
  sec
    0 .. 59
  wday
    0 .. 6 (Sun .. Mon)
  weekday
    Sun, Mon, ..., Sat
  yday
    1 .. 366
  year
    1900 ...
  zone
    -720 .. 720 (minutes east of GMT)
::mime::mapencoding encoding_name
  This commansd maps tcl encodings onto the proper names for their MIME charset type. This is only done for encodings whose charset types were known. The remaining encodings return &quot;&quot; for now.
::mime::reversemapencoding charset_type
  This command maps MIME charset types onto tcl encoding names. Those that are unknown return &quot;&quot;.

## SEE ALSO

smtp, pop3, ftp, http

## KEYWORDS

mail, email, smtp, mime, rfc821, rfc822, internet, net