factor/library/httpd/file-responder.factor

! :folding=indent:collapseFolds=1:

! $Id$
!
! Copyright (C) 2004 Slava Pestov.
! 
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! modification, are permitted provided that the following conditions are met:
! 
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!    this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright notice,
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IN: file-responder
USE: combinators
USE: errors
USE: files
USE: html
USE: httpd
USE: httpd-responder
USE: kernel
USE: lists
USE: logging
USE: namespaces
USE: parser
USE: stack
USE: stdio
USE: streams
USE: strings
USE: unparser

: serving-path ( filename -- filename )
    f>"" "doc-root" get swap cat2 ;

: file-response ( mime-type length -- )
    [,
        unparse "Content-Length" swons ,
        "Content-Type" swons ,
    ,] "200 OK" response terpri ;

: serve-static ( filename mime-type -- )
    over file-length file-response  "method" get "head" = [
        drop
    ] [
        <filebr> "stdio" get fcopy
    ] ifte ;

: serve-file ( filename -- )
    dup mime-type dup "application/x-factor-server-page" = [
        drop run-file
    ] [
        serve-static
    ] ifte ;

: list-directory ( directory -- )
    serving-html
     "method" get "head" = [
        drop
    ] [
        dup [ directory. ] simple-html-document
    ] ifte ;

: serve-directory ( filename -- )
    "/" ?str-tail [
        dup "index.html" cat2 dup exists? [
            serve-file
        ] [
            drop list-directory
        ] ifte
    ] [
        drop directory-no/
    ] ifte ;

: serve-object ( filename -- )
    dup directory? [ serve-directory ] [ serve-file ] ifte ;

: file-responder ( filename -- )
    "doc-root" get [
        serving-path dup exists? [
            serve-object
        ] [
            drop "404 not found" httpd-error
        ] ifte
    ] [
        drop "404 doc-root not set" httpd-error
    ] ifte ;