factor/extra/imap/imap.factor

194 lines
5.8 KiB
Factor

USING: accessors arrays assocs calendar calendar.english
calendar.format calendar.parser formatting fry grouping io
io.crlf io.encodings.ascii io.encodings.binary
io.encodings.string io.encodings.utf7 io.encodings.utf8
io.sockets io.sockets.secure io.streams.duplex io.streams.string
kernel math math.parser multiline pcre sequences
sequences.extras strings ;
QUALIFIED: pcre
IN: imap
ERROR: imap4-error ind data ;
CONSTANT: IMAP4_PORT 143
CONSTANT: IMAP4_SSL_PORT 993
! Converts a timestamp to the format imap4 expects.
: timestamp>internal-date ( timestamp -- str )
[
{
DD "-" MONTH "-" YYYY " "
hh ":" mm ":" ss " "
[ gmt-offset>> write-gmt-offset ]
} formatted
] with-string-writer ;
: internal-date>timestamp ( str -- timestamp )
[
! Date, month, year.
"-" read-token checked-number
"-" read-token month-abbreviations index 1 +
read-sp checked-number spin
! Hour, minute second and gmt offset.
read-hms " " expect readln parse-rfc822-gmt-offset <timestamp>
] with-string-reader ;
<PRIVATE
: >utf7imap4 ( str -- str' )
utf7imap4 encode >string ;
: comma-list ( numbers -- str )
[ number>string ] map "," join ;
: check-status ( ind data -- )
over "OK" = not [ imap4-error ] [ 2drop ] if ;
: read-response-chunk ( stop-expr -- item ? )
read-?crlf ascii decode swap dupd pcre:findall
[
dup [[ ^.*{(\d+)}$]] pcre:findall
[
dup [[ ^\* (\d+) [A-Z-]+ (.*)$]] pcre:findall
[ ] [ nip first third second ] if-empty
]
[
! Literal item to read, such as message body.
nip first second second string>number read ascii decode
read-?crlf drop
] if-empty t
]
[ nip first rest values f ] if-empty ;
: read-response ( tag -- lines )
"^%s (BAD|NO|OK) (.*)$" sprintf
'[ _ read-response-chunk ] loop>array*
unclip-last first2 [ check-status ] keep suffix ;
: write-command ( command literal tag -- )
-rot [
[ "%s %s\r\n" sprintf ] [ length "%s %s {%d}\r\n" sprintf ] if-empty
ascii encode write flush
] keep [
read-?crlf drop "\r\n" append write flush
] unless-empty ;
: command-response ( command literal -- obj )
"ABCD" [ write-command ] [ read-response ] bi ;
! Special parsing
: parse-items ( seq -- items )
first " " split 2 tail ;
: parse-list-folders ( str -- folder )
[[ \* LIST \(([^\)]+)\) "([^"]+)" "?([^"]+)"?]] pcre:findall
first rest values [ utf7imap4 decode ] map ;
: parse-select-folder ( seq -- count )
[ [[ \* (\d+) EXISTS]] pcre:findall ] map harvest
[ f ] [ first first last last string>number ] if-empty ;
! Returns uid if the server supports the UIDPLUS extension.
: parse-append-mail ( seq -- uid/f )
[ [=[ \[APPENDUID (\d+) \d+\]]=] pcre:findall ] map harvest
[ f ] [ first first last last string>number ] if-empty ;
: parse-status ( seq -- assoc )
first [[ \* STATUS "[^"]+" \(([^\)]+)\)]] pcre:findall first last last
" " split 2 group [ string>number ] assoc-map ;
: parse-store-mail-line ( str -- pair/f )
[[ \(FLAGS \(([^\)]+)\) UID (\d+)\)]] pcre:findall [ f ] [
first rest values first2 [ " " split ] dip string>number swap 2array
] if-empty ;
: parse-store-mail ( seq -- assoc )
but-last [ parse-store-mail-line ] map sift ;
PRIVATE>
! Constructor
: <imap4ssl> ( host -- imap4 )
IMAP4_SSL_PORT <inet> f <secure> binary <client> drop
! Read the useless welcome message.
dup [ "\\*" read-response drop ] with-stream* ;
! IMAP commands
: capabilities ( -- caps )
"CAPABILITY" "" command-response parse-items ;
: login ( username password -- caps )
"LOGIN %s \"%s\"" sprintf "" command-response parse-items ;
! Folder management
: list-folders ( directory -- folders )
"LIST \"%s\" *" sprintf "" command-response
but-last [ parse-list-folders ] map ;
: list-all-folders ( -- folders ) "" list-folders ;
: select-folder ( mailbox -- count )
>utf7imap4 "SELECT \"%s\"" sprintf "" command-response
parse-select-folder ;
: create-folder ( mailbox -- )
>utf7imap4 "CREATE \"%s\"" sprintf "" command-response
drop ;
: delete-folder ( mailbox -- )
>utf7imap4 "DELETE \"%s\"" sprintf "" command-response
drop ;
: rename-folder ( old-name new-name -- )
[ >utf7imap4 ] bi@ "RENAME \"%s\" \"%s\"" sprintf "" command-response
drop ;
: status-folder ( mailbox keys -- assoc )
[ >utf7imap4 ] dip " " join "STATUS \"%s\" (%s)" sprintf
"" command-response parse-status ;
: close-folder ( -- )
"CLOSE" "" command-response drop ;
! Mail management
: search-mails ( data-spec str -- uids )
[ "UID SEARCH CHARSET UTF-8 %s" sprintf ] dip utf8 encode
command-response parse-items [ string>number ] map ;
: fetch-mails ( uids data-spec -- texts )
[ comma-list ] dip "UID FETCH %s %s" sprintf "" command-response but-last ;
: copy-mails ( uids mailbox -- )
[ comma-list ] dip >utf7imap4 "UID COPY %s \"%s\"" sprintf ""
command-response drop ;
: append-mail ( mailbox flags date-time mail -- uid/f )
[
[ >utf7imap4 ]
[ [ "" ] [ " " append ] if-empty ]
[ timestamp>internal-date ] tri*
"APPEND \"%s\" %s\"%s\"" sprintf
] dip utf8 encode command-response parse-append-mail ;
: store-mail ( uids command flags -- mail-flags )
[ comma-list ] 2dip "UID STORE %s %s %s" sprintf
"" command-response
parse-store-mail ;
! High level API
: with-imap ( host email password quot -- )
[ <imap4ssl> ] 3dip '[ _ _ login drop @ ] with-stream ; inline
TUPLE: imap-settings host email password ;
: <imap-settings> ( host email password -- obj )
imap-settings new
swap >>password
swap >>email
swap >>host ; inline
: with-imap-settings ( imap-settings quot -- )
[ [ host>> ] [ email>> ] [ password>> ] tri ] dip with-imap ; inline