107 lines
3.8 KiB
Scheme
107 lines
3.8 KiB
Scheme
#| -*-Scheme-*-
|
||
|
||
Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
|
||
1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
|
||
2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
|
||
2017, 2018, 2019, 2020 Massachusetts Institute of Technology
|
||
|
||
This file is part of MIT/GNU Scheme.
|
||
|
||
MIT/GNU Scheme 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.
|
||
|
||
MIT/GNU Scheme 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 MIT/GNU Scheme; if not, write to the Free Software
|
||
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
|
||
USA.
|
||
|
||
|#
|
||
|
||
;;;; Buffer Set Abstraction
|
||
|
||
|
||
|
||
(define-structure (bufferset (constructor %make-bufferset))
|
||
buffer-list
|
||
(names #f read-only #t))
|
||
|
||
(define (make-bufferset initial-buffer)
|
||
(%make-bufferset (list initial-buffer)
|
||
(let ((names (make-string-table 16 false)))
|
||
(string-table-put! names
|
||
(buffer-name initial-buffer)
|
||
initial-buffer)
|
||
names)))
|
||
|
||
(define (bufferset-select-buffer! bufferset buffer)
|
||
(if (memq buffer (bufferset-buffer-list bufferset))
|
||
(set-bufferset-buffer-list!
|
||
bufferset
|
||
(cons buffer (delq! buffer (bufferset-buffer-list bufferset)))))
|
||
unspecific)
|
||
|
||
(define (bufferset-bury-buffer! bufferset buffer)
|
||
(if (memq buffer (bufferset-buffer-list bufferset))
|
||
(set-bufferset-buffer-list!
|
||
bufferset
|
||
(append! (delq! buffer (bufferset-buffer-list bufferset))
|
||
(list buffer))))
|
||
unspecific)
|
||
|
||
(define (bufferset-guarantee-buffer! bufferset buffer)
|
||
(if (not (memq buffer (bufferset-buffer-list bufferset)))
|
||
(begin
|
||
(string-table-put! (bufferset-names bufferset)
|
||
(buffer-name buffer)
|
||
buffer)
|
||
(set-bufferset-buffer-list! bufferset
|
||
(append! (bufferset-buffer-list bufferset)
|
||
(list buffer)))))
|
||
unspecific)
|
||
|
||
(define (bufferset-find-buffer bufferset name)
|
||
(string-table-get (bufferset-names bufferset) name))
|
||
|
||
(define (bufferset-create-buffer bufferset name)
|
||
(if (bufferset-find-buffer bufferset name)
|
||
(error "Attempt to re-create buffer" name))
|
||
(let ((buffer
|
||
(make-buffer name
|
||
(ref-variable editor-default-mode)
|
||
(if within-editor?
|
||
(buffer-default-directory (current-buffer))
|
||
(working-directory-pathname)))))
|
||
(string-table-put! (bufferset-names bufferset) name buffer)
|
||
(set-bufferset-buffer-list!
|
||
bufferset
|
||
(append! (bufferset-buffer-list bufferset) (list buffer)))
|
||
buffer))
|
||
|
||
(define (bufferset-find-or-create-buffer bufferset name)
|
||
(or (bufferset-find-buffer bufferset name)
|
||
(bufferset-create-buffer bufferset name)))
|
||
|
||
(define (bufferset-kill-buffer! bufferset buffer)
|
||
(if (not (memq buffer (bufferset-buffer-list bufferset)))
|
||
(error "Attempt to kill unknown buffer" buffer))
|
||
(set-bufferset-buffer-list! bufferset
|
||
(delq! buffer (bufferset-buffer-list bufferset)))
|
||
(string-table-remove! (bufferset-names bufferset) (buffer-name buffer)))
|
||
|
||
(define (bufferset-rename-buffer bufferset buffer new-name)
|
||
(if (not (memq buffer (bufferset-buffer-list bufferset)))
|
||
(error "Attempt to rename unknown buffer" buffer))
|
||
(if (bufferset-find-buffer bufferset new-name)
|
||
(error "Attempt to rename buffer to existing buffer name" new-name))
|
||
(let ((names (bufferset-names bufferset)))
|
||
(string-table-remove! names (buffer-name buffer))
|
||
(set-buffer-name! buffer new-name)
|
||
(string-table-put! names new-name buffer)))
|