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;;;; editor.scm --
;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
;;;; (c) 2005--2006 Jan Nieuwenhuizen <janneke@gnu.org>
(define-module (scm editor))
;; Also for standalone use, so cannot include any lily modules.
(use-modules
(ice-9 regex)
(srfi srfi-13)
(srfi srfi-14))
(define PLATFORM
(string->symbol
(string-downcase
(car (string-tokenize (vector-ref (uname) 0) char-set:letter)))))
(define (get-editor)
(or (getenv "LYEDITOR")
(getenv "XEDITOR")
(getenv "EDITOR")
;; FIXME: how are default/preferred editors specified on
;; different platforms?
(case PLATFORM
((windows) "lilypad")
(else
"emacs"))))
(define editor-command-template-alist
'(("emacs" . "emacsclient --no-wait +%(line)s:%(column)s %(file)s || (emacs +%(line)s:%(column)s %(file)s&)")
("gvim" . "gvim --remote +:%(line)s:norm%(char)s %(file)s")
("uedit32" . "uedit32 %(file)s -l%(line)s -c%(char)s")
("nedit" . "nc -noask +%(line)s %(file)s")
("gedit" . "gedit +%(line)s %(file)s")
("jedit" . "jedit -reuseview %(file)s +line:%(line)s")
("syn" . "syn -line %(line)s -col %(char)s %(file)s")
("lilypad" . "lilypad +%(line)s:%(char)s %(file)s")))
(define (get-command-template alist editor)
(define (get-command-template-helper)
(if (null? alist)
(if (string-match "%\\(file\\)s" editor)
editor
(string-append editor " %(file)s"))
(if (string-match (caar alist) editor)
(cdar alist)
(get-command-template (cdr alist) editor))))
(if (string-match "%\\(file\\)s" editor)
editor
(get-command-template-helper)))
(define (re-sub re sub string)
(regexp-substitute/global #f re string 'pre sub 'post))
(define (slashify x)
(if (string-index x #\/)
x
(re-sub "\\\\" "/" x)))
(define-public (get-editor-command file-name line char column)
(let* ((editor (get-editor))
(template (get-command-template editor-command-template-alist editor))
(command
(re-sub "%\\(file\\)s" (format #f "~S" file-name)
(re-sub "%\\(line\\)s" (format #f "~a" line)
(re-sub "%\\(char\\)s" (format #f "~a" char)
(re-sub
"%\\(column\\)s" (format #f "~a" column)
(slashify template)))))))
command))
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