Started a port of Skribe to Guile.

* src/guile:  New directory.  Contains the beginning of a Guile implementation
  that borrows most of its code to the STkLos implementation of Skribe.



git-archimport-id: lcourtes@laas.fr--2004-libre/skribilo--devel--1.2--patch-4

1 files changed, 162 insertions, 0 deletions

diff --git a/src/guile/skribe/output.scm b/src/guile/skribe/output.scm
new file mode 100644
index 0000000..03c251c
--- /dev/null
+++ b/src/guile/skribe/output.scm
@@ -0,0 +1,162 @@
+;;;;
+;;;; output.stk	-- Skribe Output Stage
+;;;; 
+;;;; Copyright © 2003-2004 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
+;;;; 
+;;;; 
+;;;; This program is free software; you can redistribute it and/or modify
+;;;; it under the terms of the GNU General Public License as published by
+;;;; the Free Software Foundation; either version 2 of the License, or
+;;;; (at your option) any later version.
+;;;; 
+;;;; This program is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;;; GNU General Public License for more details.
+;;;; 
+;;;; You should have received a copy of the GNU General Public License
+;;;; along with this program; if not, write to the Free Software
+;;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
+;;;; USA.
+;;;; 
+;;;;           Author: Erick Gallesio [eg@essi.fr]
+;;;;    Creation date: 13-Aug-2003 18:42 (eg)
+;;;; Last file update:  5-Mar-2004 10:32 (eg)
+;;;;
+
+(define-module (skribe output)
+   :export (output))
+
+(use-modules (skribe debug)
+	     (skribe types)
+;	     (skribe engine)
+;	     (skribe writer)
+	     (oop goops))
+
+
+(define-generic out)
+
+(define (%out/writer n e w)
+  (with-debug 5 'out/writer
+      (debug-item "n=" n " " (if (markup? n) (markup-markup n) ""))
+      (debug-item "e=" (engine-ident e))
+      (debug-item "w=" (writer-ident w))
+
+      (when (writer? w)
+	(invoke (slot-ref w 'before) n e)
+	(invoke (slot-ref w 'action) n e)
+	(invoke (slot-ref w 'after)  n e))))
+
+   
+
+(define (output node e . writer)
+  (with-debug 3 'output
+    (debug-item "node=" node " " (if (markup? node) (markup-markup node) ""))
+    (debug-item "writer=" writer)
+    (if (null? writer)
+	(out node e)
+	(cond
+	  ((is-a? (car writer) <writer>)
+	   (%out/writer node e (car writer)))
+	  ((not (car writer))
+	   (skribe-error 'output
+			 (format "Illegal ~A user writer" (engine-ident e))
+			 (if (markup? node) (markup-markup node) node)))
+	  (else
+	   (skribe-error 'output "Illegal user writer" (car writer)))))))
+
+
+;;;
+;;; OUT implementations
+;;;
+(define-method (out node e)
+  #f)
+
+
+(define-method (out (node <pair>) e)
+  (let Loop ((n* node))
+    (cond
+      ((pair? n*)
+       (out (car n*) e)
+       (loop (cdr n*)))
+      ((not (null? n*))
+       (skribe-error 'out "Illegal argument" n*)))))
+
+
+(define-method (out (node <string>) e)
+  (let ((f (slot-ref e 'filter)))
+    (if (procedure? f)
+	(display (f node))
+	(display node))))
+
+
+(define-method (out (node <number>) e)
+  (out (number->string node) e))
+
+
+(define-method (out (n <processor>) e)
+  (let ((combinator (slot-ref n 'combinator))
+	(engine     (slot-ref n 'engine))
+	(body	    (slot-ref n 'body))
+	(procedure  (slot-ref n 'procedure)))
+    (let ((newe (processor-get-engine combinator engine e)))
+      (out (procedure body newe) newe))))
+
+
+(define-method (out (n <command>) e)
+  (let* ((fmt  (slot-ref n 'fmt))
+	 (body (slot-ref n 'body))
+	 (lb   (length body))
+	 (lf   (string-length fmt)))
+    (define (loops i n)
+      (if (= i lf)
+	  (begin
+	    (if (> n 0)
+		(if (<= n lb)
+		    (output (list-ref body (- n 1)) e)
+		    (skribe-error '! "Too few arguments provided" n)))
+	    lf)
+	  (let ((c (string-ref fmt i)))
+	    (cond
+	      ((char=? c #\$)
+	       (display "$")
+	       (+ 1 i))
+	      ((not (char-numeric? c))
+	       (cond
+		 ((= n 0)
+		    i)
+		 ((<= n lb)
+		    (output (list-ref body (- n 1)) e)
+		    i)
+		 (else
+		    (skribe-error '! "Too few arguments provided" n))))
+	      (else
+	       (loops (+ i 1)
+		      (+ (- (char->integer c)
+			    (char->integer #\0))
+			 (* 10 n))))))))
+    
+    (let loop ((i 0))
+      (cond
+	((= i lf)
+	 #f)
+	((not (char=? (string-ref fmt i) #\$))
+	 (display (string-ref fmt i))
+	 (loop (+ i 1)))
+	(else
+	 (loop (loops (+ i 1) 0)))))))
+
+
+(define-method (out (n <handle>) e)
+  'unspecified)
+
+
+(define-method (out (n <unresolved>) e)
+  (skribe-error 'output "Orphan unresolved" n))
+
+
+(define-method (out (node <markup>) e)
+  (let ((w (lookup-markup-writer node e)))
+    (if (writer? w)
+	(%out/writer node e w)
+	(output (slot-ref node 'body) e))))