factor/extra/http/server/server.factor

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Factor
Executable File

! Copyright (C) 2003, 2008 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: kernel accessors sequences arrays namespaces splitting
vocabs.loader http http.server.responses logging calendar
destructors html.elements html.streams io.server
io.encodings.8-bit io.timeouts io assocs debugger continuations
fry tools.vocabs math ;
IN: http.server
SYMBOL: responder-nesting
SYMBOL: main-responder
SYMBOL: development-mode
! path is a sequence of path component strings
GENERIC: call-responder* ( path responder -- response )
TUPLE: trivial-responder response ;
C: <trivial-responder> trivial-responder
M: trivial-responder call-responder* nip response>> clone ;
main-responder global [ <404> <trivial-responder> or ] change-at
: invert-slice ( slice -- slice' )
dup slice? [ [ seq>> ] [ from>> ] bi head-slice ] [ drop { } ] if ;
: add-responder-nesting ( path responder -- )
[ invert-slice ] dip 2array responder-nesting get push ;
: call-responder ( path responder -- response )
[ add-responder-nesting ] [ call-responder* ] 2bi ;
: http-error. ( error -- )
"Internal server error" [
[ print-error nl :c ] with-html-stream
] simple-page ;
: <500> ( error -- response )
500 "Internal server error" <trivial-response>
development-mode get [ swap '[ , http-error. ] >>body ] [ drop ] if ;
: do-response ( response -- )
dup write-response
request get method>> "HEAD" =
[ drop ] [ '[ , write-response-body ] [ http-error. ] recover ] if ;
LOG: httpd-hit NOTICE
: log-request ( request -- )
[ method>> ] [ url>> [ host>> ] [ path>> ] bi ] bi 3array httpd-hit ;
: split-path ( string -- path )
"/" split harvest ;
: init-request ( request -- )
request set
V{ } clone responder-nesting set ;
: dispatch-request ( request -- response )
url>> path>> split-path main-responder get call-responder ;
: do-request ( request -- response )
'[
,
[ init-request ]
[ log-request ]
[ dispatch-request ] tri
] [ [ \ do-request log-error ] [ <500> ] bi ] recover ;
: ?refresh-all ( -- )
development-mode get-global
[ global [ refresh-all ] bind ] when ;
: handle-client ( -- )
[
1 minutes timeouts
?refresh-all
read-request
do-request
do-response
] with-destructors ;
: httpd ( port -- )
dup integer? [ internet-server ] when
"http.server" latin1 [ handle-client ] with-server ;
: httpd-main ( -- )
8888 httpd ;
MAIN: httpd-main