96 lines
2.5 KiB
Factor
Executable File
96 lines
2.5 KiB
Factor
Executable File
! Copyright (C) 2005 Alex Chapman
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! Copyright (C) 2006, 2007 Slava Pestov
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! See http://factorcode.org/license.txt for BSD license.
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USING: continuations sequences kernel parser namespaces io
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io.files io.streams.lines io.streams.string html html.elements
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source-files debugger combinators math quotations generic
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strings splitting ;
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IN: http.server.templating
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: templating-vocab ( -- vocab-name ) "http.server.templating" ;
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! See apps/http-server/test/ or libs/furnace/ for template usage
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! examples
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! We use a custom lexer so that %> ends a token even if not
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! followed by whitespace
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TUPLE: template-lexer ;
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: <template-lexer> ( lines -- lexer )
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<lexer> template-lexer construct-delegate ;
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M: template-lexer skip-word
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[
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{
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{ [ 2dup nth CHAR: " = ] [ drop 1+ ] }
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{ [ 2dup swap tail-slice "%>" head? ] [ drop 2 + ] }
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{ [ t ] [ f skip ] }
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} cond
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] change-column ;
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DEFER: <% delimiter
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: check-<% ( lexer -- col )
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"<%" over line-text rot lexer-column start* ;
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: found-<% ( accum lexer col -- accum )
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[
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over line-text >r >r lexer-column r> r> subseq parsed
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\ write-html parsed
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] 2keep 2 + swap set-lexer-column ;
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: still-looking ( accum lexer -- accum )
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[
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dup line-text swap lexer-column tail
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parsed \ print-html parsed
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] keep next-line ;
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: parse-%> ( accum lexer -- accum )
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dup still-parsing? [
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dup check-<%
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[ found-<% ] [ [ still-looking ] keep parse-%> ] if*
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] [
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drop
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] if ;
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: %> lexer get parse-%> ; parsing
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: parse-template-lines ( lines -- quot )
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<template-lexer> [
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V{ } clone lexer get parse-%> f (parse-until)
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] with-parser ;
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: parse-template ( string -- quot )
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[
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use [ clone ] change
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templating-vocab use+
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string-lines parse-template-lines
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] with-scope ;
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: eval-template ( string -- ) parse-template call ;
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: html-error. ( error -- )
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<pre> error. </pre> ;
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: run-template-file ( filename -- )
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[
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[
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"quiet" on
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parser-notes off
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templating-vocab use+
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dup source-file file set ! so that reload works properly
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[
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?resource-path file-contents
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[ eval-template ] [ html-error. drop ] recover
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] keep
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] with-file-vocabs
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] assert-depth drop ;
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: run-relative-template-file ( filename -- )
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file get source-file-path parent-directory
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swap path+ run-template-file ;
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: template-convert ( infile outfile -- )
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<file-writer> [ run-template-file ] with-stream ;
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