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Refactor embedded.factor

darcs
slava 2006-12-18 07:25:17 +00:00
parent e8e4cb37fb
commit 7327255050
1 changed files with 13 additions and 46 deletions
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59
libs/httpd/embedded.factor
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@ -1,57 +1,24 @@
! Copyright (C) 2005 Alex Chapman.
! Copyright (C) 2005 Alex Chapman
! Copyright (C) 2006 Slava Pestov
! See http://factorcode.org/license.txt for BSD license.
IN: embedded
USING: sequences kernel parser math namespaces io html test errors ;
USING: sequences kernel parser namespaces io html errors ;
! if example.fhtml contains:
! <html>
! <head><title>Simple Embedded Factor Example</title></head>
! <body>
! <% 5 [ %><p>I like repetition</p>
! <% drop ] each %>
! </body>
! </html>
!
! then "example.fhtml" run-embedded-file prints to stdout:
! <html>
! <head><title>Simple Embedded Factor Example</title></head>
! <body>
! <p>I like repetition</p>
! <p>I like repetition</p>
! <p>I like repetition</p>
! <p>I like repetition</p>
! <p>I like repetition</p>
!
! </body>
! </html>
! See libs/httpd/test/ or libs/furnace/ for embedded usage
! examples!
: get-text ( string -- remainder chunk )
"<%" over start dup -1 = [
drop "" swap
] [
2dup head >r tail r>
] if ;
: process-html ( parse-tree string -- parse-tree )
dup empty? [ drop ] [ parsed \ write-html parsed ] if ;
: get-embedded ( string -- string code-string )
! regexps where art thou?
"%>" over 2 start* 2dup swap 2 -rot subseq >r 2 + tail r> ;
: process-embedded ( parse-tree string -- string parse-tree )
"<%" split1 >r process-html r> "%>" split1 >r (parse) r> ;
: get-first-chunk ( string -- string )
dup "<%" head? [
get-embedded parse %
] [
get-text , \ write-html ,
] if ;
: embedded>factor ( string -- )
dup length 0 > [
get-first-chunk embedded>factor
] [ drop ] if ;
: (parse-embedded) ( parse-tree string -- parse-tree )
dup empty?
[ drop ] [ process-embedded (parse-embedded) ] if ;
: parse-embedded ( string -- quot )
#! simple example: "numbers: <% 3 [ 1 + pprint ] each %>"
#! => "\"numbers: \" write 3 [ 1 + pprint ] each"
[ embedded>factor ] [ ] make ;
[ f swap (parse-embedded) >quotation ] with-parser ;
: eval-embedded ( string -- ) parse-embedded call ;