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, 190 insertions, 0 deletions

diff --git a/src/guile/skribe/source.scm b/src/guile/skribe/source.scm
new file mode 100644
index 0000000..6ec0963
--- /dev/null
+++ b/src/guile/skribe/source.scm
@@ -0,0 +1,190 @@
+;;;;
+;;;; source.stk	-- Skibe SOURCE implementation stuff
+;;;; 
+;;;; Copyright © 2003-2004 Erick Gallesio - I3S-CNRS/ESSI <eg@essi.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:  3-Sep-2003 12:22 (eg)
+;;;; Last file update: 27-Oct-2004 20:09 (eg)
+;;;;
+
+
+
+(define-module (skribe source)
+   :export (source-read-lines source-read-definition source-fontify))
+
+
+;; Temporary solution
+(define (language-extractor lang)
+  (slot-ref lang 'extractor))
+
+(define (language-fontifier lang)
+  (slot-ref lang 'fontifier))
+
+
+;*---------------------------------------------------------------------*/
+;*    source-read-lines ...                                            */
+;*---------------------------------------------------------------------*/
+(define (source-read-lines file start stop tab)
+   (let ((p (find-path file (skribe-source-path))))
+     (if (or (not (string? p)) (not (file-exists? p)))
+	  (skribe-error 'source
+			(format "Can't find `~a' source file in path" file)
+			(skribe-source-path))
+	  (with-input-from-file p
+	     (lambda ()
+		(if (> *skribe-verbose* 0)
+		    (format (current-error-port) "  [source file: ~S]\n" p))
+		(let ((startl (if (string? start) (string-length start) -1))
+		      (stopl  (if (string? stop)  (string-length stop)  -1)))
+		   (let loop ((l      1)
+			      (armedp (not (or (integer? start) (string? start))))
+			      (s      (read-line))
+			      (r      '()))
+		      (cond
+			 ((or (eof-object? s)
+			      (and (integer? stop) (> l stop))
+			      (and (string? stop) (substring=? stop s stopl)))
+			  (apply string-append (reverse! r)))
+			 (armedp
+			  (loop (+ l 1)
+				#t
+				(read-line)
+				(cons* "\n" (untabify s tab) r)))
+			 ((and (integer? start) (>= l start))
+			  (loop (+ l 1)
+				#t
+				(read-line)
+				(cons* "\n" (untabify s tab) r)))
+			 ((and (string? start) (substring=? start s startl))
+			  (loop (+ l 1) #t (read-line) r))
+			 (else
+			  (loop (+ l 1) #f (read-line) r))))))))))
+
+;*---------------------------------------------------------------------*/
+;*    untabify ...                                                     */
+;*---------------------------------------------------------------------*/
+(define (untabify obj tab)
+   (if (not tab)
+       obj
+       (let ((len (string-length obj))
+	     (tabl tab))
+	  (let loop ((i 0)
+		     (col 1))
+	     (cond
+		((= i len)
+		 (let ((nlen (- col 1)))
+		    (if (= len nlen)
+			obj
+			(let ((new (make-string col #\space)))
+			   (let liip ((i 0)
+				      (j 0)
+				      (col 1))
+			      (cond
+				 ((= i len)
+				  new)
+				 ((char=? (string-ref obj i) #\tab)
+				  (let ((next-tab (* (/ (+ col tabl)
+							    tabl)
+						       tabl)))
+				     (liip (+ i 1)
+					   next-tab
+					   next-tab)))
+				 (else
+				  (string-set! new j (string-ref obj i))
+				  (liip (+ i 1) (+ j 1) (+ col 1)))))))))
+		((char=? (string-ref obj i) #\tab)
+		 (loop (+ i 1)
+		       (* (/ (+ col tabl) tabl) tabl)))
+		(else
+		 (loop (+ i 1) (+ col 1))))))))
+
+;*---------------------------------------------------------------------*/
+;*    source-read-definition ...                                       */
+;*---------------------------------------------------------------------*/
+(define (source-read-definition file definition tab lang)
+   (let ((p (find-path file (skribe-source-path))))
+      (cond
+	 ((not (language-extractor lang))
+	  (skribe-error 'source
+			"The specified language has not defined extractor"
+			(slot-ref lang 'name)))
+	 ((or (not p) (not (file-exists? p)))
+	  (skribe-error 'source
+			(format "Can't find `~a' program file in path" file)
+			(skribe-source-path)))
+	 (else
+	  (let ((ip (open-input-file p)))
+	     (if (> *skribe-verbose* 0)
+		 (format (current-error-port) "  [source file: ~S]\n" p))
+	     (if (not (input-port? ip))
+		 (skribe-error 'source "Can't open file for input" p)
+		 (unwind-protect
+		    (let ((s ((language-extractor lang) ip definition tab)))
+		       (if (not (string? s))
+			   (skribe-error 'source
+					 "Can't find definition"
+					 definition)
+			   s))
+		    (close-input-port ip))))))))
+
+;*---------------------------------------------------------------------*/
+;*    source-fontify ...                                               */
+;*---------------------------------------------------------------------*/
+(define (source-fontify o language)
+   (define (fontify f o)
+      (cond
+	 ((string? o) (f o))
+	 ((pair? o) (map (lambda (s) (if (string? s) (f s) (fontify f s))) o))
+	 (else o)))
+   (let ((f (language-fontifier language)))
+      (if (procedure? f)
+	  (fontify f o)
+	  o)))
+
+;*---------------------------------------------------------------------*/
+;*    split-string-newline ...                                         */
+;*---------------------------------------------------------------------*/
+(define (split-string-newline str)
+   (let ((l (string-length str)))
+      (let loop ((i 0)
+		 (j 0)
+		 (r '()))
+	 (cond
+	    ((= i l)
+	     (if (= i j)
+		 (reverse! r)
+		 (reverse! (cons (substring str j i) r))))
+	    ((char=? (string-ref str i) #\Newline)
+	     (loop (+ i 1)
+		   (+ i 1)
+		   (if (= i j)
+		       (cons 'eol r)
+		       (cons* 'eol (substring str j i) r))))
+	    ((and (char=? (string-ref str i) #\cr)
+		  (< (+ i 1) l)
+		  (char=? (string-ref str (+ i 1)) #\Newline))
+	     (loop (+ i 2)
+		   (+ i 2)
+		   (if (= i j)
+		       (cons 'eol r)
+		       (cons* 'eol (substring str j i) r))))
+	    (else
+	     (loop (+ i 1) j r))))))
+