add ftp so i can work on it on another computer

extra/ftp/client/authors.txt

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+Doug Coleman

extra/ftp/client/client.factor

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+! Copyright (C) 2008 Doug Coleman.
+! See http://factorcode.org/license.txt for BSD license.
+USING: accessors combinators continuations io io.encodings.binary
+io.encodings.ascii io.files io.sockets kernel math
+math.parser sequences splitting namespaces ;
+IN: ftp.client
+
+TUPLE: ftp-client host port stream user password ;
+TUPLE: ftp-response n strings ;
+
+: <ftp-response> ( -- ftp-response )
+    ftp-response new
+        V{ } clone >>strings ;
+
+: <ftp-client> ( host -- ftp-client )
+    ftp-client new
+        swap >>host
+        21 >>port
+        "anonymous" >>user
+        "lol@test.com" >>password ;
+
+: read-epsv ( stream -- port )
+    dup stream-readln dup print
+    "|" split 2 tail* first string>number ;
+
+: read-until-command ( stream ftp-response -- n )
+    over stream-readln
+    " " split1 drop string>number dup number? [
+        nip
+    ] [
+        drop read-until-command
+    ] if ;
+
+: ftp-read ( ftp-client -- ftp-response )
+    stream>> <ftp-response> [ read-until-command ] keep
+    dup strings>> peek " " split1 ;
+
+: ftp-send ( str ftp-client -- )
+    stream>>
+    [ stream-write ]
+    [ "\r\n" swap stream-write ]
+    [ stream-flush ] tri ;
+
+: ftp-command ( ftp-client string -- n )
+    swap
+    [ ftp-send ] [ ftp-read ] bi ;
+
+: ftp-user ( ftp-client -- n ) dup user>> "USER " prepend ftp-command ;
+: ftp-password ( ftp-client -- n ) dup password>> "PASS " prepend ftp-command ;
+: ftp-set-binary ( ftp-client -- n ) "TYPE I" ftp-command ;
+: ftp-set-ascii ( ftp-client -- n ) "TYPE A" ftp-command ;
+: ftp-system ( ftp-client -- n ) "SYST" ftp-command ;
+: ftp-features ( ftp-client -- n ) "FEAT" ftp-command ;
+: ftp-pwd ( ftp-client -- n ) "PWD" ftp-command ;
+: ftp-list ( ftp-client -- n ) "LIST" ftp-command ;
+: ftp-quit ( ftp-client -- n ) "QUIT" ftp-command ;
+: ftp-epsv ( ftp-client -- n str ) "EPSV" ftp-command ;
+: ftp-cwd ( ftp-client directory -- n ) "CWD " prepend ftp-command ;
+: ftp-retr ( ftp-client filename -- n ) "RETR " prepend ftp-command ;
+
+M: ftp-client dispose ( ftp-client -- )
+    [ "QUIT" ftp-command ] [ stream>> dispose ] bi ;
+
+ERROR: ftp-error got expected ;
+: ftp-assert ( m n -- )
+    2dup = [ 2drop ] [ ftp-error ] if ;
+
+: ftp-connect ( ftp-client -- stream )
+    dup
+    [ host>> ] [ port>> ] bi <inet> ascii <client>
+    >>stream drop ;
+
+: ftp-login ( ftp-client -- )
+    {
+        [ ftp-connect ]
+        [ ftp-read 220 ftp-assert ]
+        [ ftp-user 331 ftp-assert ]
+        [ ftp-password 230 ftp-assert ]
+        [ ftp-set-binary 200 ftp-assert ]
+    } cleave ;
+
+: list ( stream -- )
+    dup ftp-epsv
+    dup read-epsv
+    ! host get swap <inet> binary <client>
+    over ftp-list
+    over read-until-command drop
+    contents write
+    read-until-command drop ;
+
+: ftp-get ( ftp-client filename -- )
+    over ftp-epsv 229 ftp-assert
+    
+    ;
+
+! : ftp-get ( path stream -- )
+    ! dup ftp-epsv
+    ! dup read-epsv
+    ! ! host get swap <inet> binary <client>
+    ! >r [ ftp-retr ] 2keep dup read-until-command drop r>
+    ! rot binary <file-writer> stream-copy
+    ! read-until-command drop ;
+
+
+
+: ftp-interact ( stream -- )
+    readln over ftp-send read-until-command drop ;