1 ! Copyright (C) 2005 Alex Chapman
2 ! Copyright (C) 2006, 2007 Slava Pestov
3 ! See http://factorcode.org/license.txt for BSD license.
4 USING: sequences kernel parser namespaces io io.files
5 io.streams.lines io.streams.string html html.elements
6 source-files debugger combinators math quotations generic
9 IN: http.server.templating
11 : templating-vocab ( -- vocab-name ) "http.server.templating" ;
13 ! See apps/http-server/test/ or libs/furnace/ for template usage
16 ! We use a custom lexer so that %> ends a token even if not
17 ! followed by whitespace
18 TUPLE: template-lexer ;
20 : <template-lexer> ( lines -- lexer )
21 <lexer> template-lexer construct-delegate ;
23 M: template-lexer skip-word
26 { [ 2dup nth CHAR: " = ] [ drop 1+ ] }
27 { [ 2dup swap tail-slice "%>" head? ] [ drop 2 + ] }
28 { [ t ] [ [ blank? ] skip ] }
34 : check-<% ( lexer -- col )
35 "<%" over line-text rot lexer-column start* ;
37 : found-<% ( accum lexer col -- accum )
39 over line-text >r >r lexer-column r> r> subseq parsed
41 ] 2keep 2 + swap set-lexer-column ;
43 : still-looking ( accum lexer -- accum )
45 dup line-text swap lexer-column tail
46 parsed \ print-html parsed
49 : parse-%> ( accum lexer -- accum )
52 [ found-<% ] [ [ still-looking ] keep parse-%> ] if*
57 : %> lexer get parse-%> ; parsing
59 : parse-template-lines ( lines -- quot )
61 V{ } clone lexer get parse-%> f (parse-until)
64 : parse-template ( string -- quot )
68 string-lines parse-template-lines
71 : eval-template ( string -- ) parse-template call ;
73 : run-template-file ( filename -- )
79 dup source-file file set ! so that reload works properly
80 [ <file-reader> contents eval-template ] keep
84 : template-convert ( infile outfile -- )
85 <file-writer> [ run-template-file ] with-stream ;