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- ;;!emacs
- ;;
- ;; LCD-ENTRY: hyperbole|Bob Weiner|hyperbole@hub.ucsb.edu|Everyday Info Manager|29-Aug-95|3.19.07|ftp.cs.uiuc.edu:/pub/xemacs/infodock/
- ;;
- ;; FILE: hversion.el
- ;; SUMMARY: Hyperbole version, system and load path information.
- ;; USAGE: GNU Emacs Lisp Library
- ;; KEYWORDS: hypermedia
- ;;
- ;; AUTHOR: Bob Weiner
- ;; ORG: Brown U.
- ;;
- ;; ORIG-DATE: 1-Jan-94
- ;; LAST-MOD: 29-Aug-95 at 11:08:34 by Bob Weiner
- ;;
- ;; This file is part of Hyperbole.
- ;; Available for use and distribution under the same terms as GNU Emacs.
- ;;
- ;; Copyright (C) 1994-1995, Free Software Foundation, Inc.
- ;; Developed with support from Motorola Inc.
- ;;
- ;; DESCRIPTION:
- ;; DESCRIP-END.
-
- ;;; ************************************************************************
- ;;; Public variables
- ;;; ************************************************************************
-
- (defconst hyperb:version "03.19.07" "Hyperbole revision number.")
-
- ;;; Support button highlighting and flashing under XEmacs.
- ;;;
- (defvar hyperb:xemacs-p
- (let ((case-fold-search t))
- (if (string-match "XEmacs" emacs-version)
- emacs-version))
- "Version string under XEmacs (not Lucid Emacs) or nil")
-
- ;;; Support button highlighting and flashing under obsolete Lucid Emacs.
- ;;;
- (defvar hyperb:lemacs-p
- (let ((case-fold-search t))
- (if (string-match "XEmacs\\|Lucid" emacs-version)
- emacs-version))
- "Version string under XEmacs or Lucid Emacs or nil")
-
- ;;; Support mouse handling under GNU Emacs V19.
- ;;;
- (defvar hyperb:emacs19-p
- (and (not hyperb:lemacs-p)
- (string-match "^19\\." emacs-version)
- emacs-version)
- "Version string under GNU Emacs 19 or nil")
-
- ;;; Support button highlighting and flashing under obsolete Epoch.
- ;;;
- (defvar hyperb:epoch-p
- (if (and (boundp 'epoch::version)
- (stringp epoch::version))
- (if (string< epoch::version "Epoch 4") "V3" "V4"))
- "Simplified version string under Epoch, e.g. \"V4\", or nil")
-
- ;; Koutlines work only with specific versions of Emacs 19 and XEmacs.
- (defconst hyperb:kotl-p
- (if hyperb:lemacs-p
- ;; Only works for XEmacs 19.9 and above.
- (string-match "^19\\.9 \\|^19\\.[1-9][0-9]" emacs-version)
- hyperb:emacs19-p)
- "Non-nil iff this Emacs version supports the Hyperbole outliner.")
-
- (defun sm-window-sys-term ()
- "Returns the first part of the term-type if running under a window system, else nil.
- Where a part in the term-type is delimited by a '-' or an '_'."
- (let ((term (cond ((memq window-system '(x ns dps pm))
- ;; X11, NEXTSTEP (DPS), or OS/2 Presentation Manager (PM)
- (cond (hyperb:emacs19-p "emacs19")
- (hyperb:lemacs-p "lemacs")
- (hyperb:epoch-p "epoch")
- (t "xterm")))
- ((or (featurep 'eterm-fns)
- (equal (getenv "TERM") "NeXT")
- (equal (getenv "TERM") "eterm"))
- ;; NEXTSTEP add-on support to Emacs
- "next")
- ((or window-system
- (featurep 'sun-mouse) (featurep 'apollo))
- (getenv "TERM")))))
- (and term
- (substring term 0 (string-match "[-_]" term)))))
-
- (defconst hyperb:window-system (sm-window-sys-term)
- "String name for window system or term type under which Emacs was run.
- If nil, no window system or mouse support is available.")
-
- ;;; ************************************************************************
- ;;; Public functions to dynamically compute Hyperbole directory.
- ;;; ************************************************************************
-
- (defvar hyperb:automount-prefixes
- (if (and (boundp 'automount-dir-prefix) (stringp automount-dir-prefix))
- automount-dir-prefix
- "^/tmp_mnt/"
- "*Regexp to match any automounter prefix in a pathname."))
-
- (defun hyperb:stack-frame (function-list &optional debug-flag)
- "Return the nearest Emacs Lisp stack frame which called any function symbol from FUNCTION-LIST or nil if no match.
- If FUNCTION-LIST contains 'load, 'autoload or 'require, detect
- autoloads not visible within the Lisp level stack frames.
-
- With optional DEBUG-FLAG non-nil, if no matching frame is found, return list
- of stack frames (from innermost to outermost)."
- (let ((count 0)
- (frame-list)
- (load-flag (or (memq 'load function-list)
- (memq 'autoload function-list)
- (memq 'require function-list)))
- fsymbol
- fbody
- frame)
- (or (catch 'hyperb:stack-frame
- (while (setq frame (backtrace-frame count))
- (if debug-flag (setq frame-list (cons frame frame-list)))
- (setq count (1+ count)
- fsymbol (nth 1 frame))
- (and (eq fsymbol 'command-execute)
- (not (memq 'command-execute function-list))
- ;; Use command being executed instead because it might not
- ;; show up in the stack anywhere else, e.g. if it is an
- ;; autoload under Emacs 19.
- (setq fsymbol (nth 2 frame)))
- (cond ((and load-flag (symbolp fsymbol)
- (fboundp fsymbol)
- (listp (setq fbody (symbol-function fsymbol)))
- (eq (car fbody) 'autoload))
- (setq frame (list (car frame) 'load
- (car (cdr fbody))
- nil noninteractive nil))
- (throw 'hyperb:stack-frame frame))
- ((memq fsymbol function-list)
- (throw 'hyperb:stack-frame frame))))
- nil)
- (if debug-flag (nreverse frame-list)))))
-
- (defun hyperb:path-being-loaded ()
- "Return the full pathname used by the innermost `load' or 'require' call.
- Removes any matches for `hyperb:automount-prefixes' before returning
- the pathname."
- (let* ((frame (hyperb:stack-frame '(load require)))
- (function (nth 1 frame))
- file nosuffix)
- (cond ((eq function 'load)
- (setq file (nth 2 frame)
- nosuffix (nth 5 frame)))
- ((eq function 'require)
- (setq file (or (nth 3 frame) (symbol-name (nth 2 frame))))))
- (if (stringp file)
- (setq nosuffix (or nosuffix
- (string-match
- "\\.\\(elc?\\|elc?\\.gz\\|elc?\\.Z\\)$"
- file))
- file (substitute-in-file-name file)
- file (locate-file file load-path
- (if nosuffix "" ".elc:.el:.el.gz:.el.Z:")
- ;; accept any existing file
- 0)
- file (if (and (stringp file)
- (string-match hyperb:automount-prefixes file))
- (substring file (1- (match-end 0)))
- file)))))
-
- (if (fboundp 'locate-file)
- nil
- (defun locate-file (file dir-list &optional suffix-string unused)
- "Search for FILE in DIR-LIST.
- If optional SUFFIX-STRING is provided, allow file to be followed by one of the
- colon separated suffixes."
- (let ((suffix-list))
- (cond ((null suffix-string) (setq suffix-list '("")))
- ((stringp suffix-string)
- (let ((start 0)
- (len (length suffix-string)))
- (while (and (< start len)
- (string-match "[^:]+" suffix-string start))
- (setq suffix-list
- (cons (substring suffix-string
- (match-beginning 0)
- (match-end 0))
- suffix-list)
- start (1+ (match-end 0))))
- (setq suffix-list (nconc (nreverse suffix-list) '("")))))
- (t (error "(locate-file): Invalid third arg, '%s', use a colon separated string of file suffixes"
- suffix-string)))
- (if (and (file-name-absolute-p file) (file-readable-p file))
- file;; file exists without suffix addition, so return it
- (if (file-name-absolute-p file) (setq dir-list '(nil)))
- (if (equal file "") (error "(locate-file): Empty file argument"))
- (let (suffixes pathname)
- ;; Search dir-list for a matching, readable file.
- (catch 'found
- (while dir-list
- (setq suffixes suffix-list)
- (while suffixes
- (setq pathname (expand-file-name
- (concat file (car suffixes))
- (car dir-list)))
- (if (file-readable-p pathname)
- (throw 'found pathname))
- (setq suffixes (cdr suffixes)))
- (setq dir-list (cdr dir-list)))))))))
-
- ;;; ************************************************************************
- ;;; Public functions used by pulldown and popup menus
- ;;; ************************************************************************
-
- (if (not (fboundp 'id-browse-file))
- (fset 'id-browse-file 'find-file-read-only))
-
- (if (not (fboundp 'id-info))
- (defun id-info (node)
- (if (br-in-browser) (br-to-view-window))
- (Info-goto-node node)))
-
- (if (not (fboundp 'id-tool-quit)) (fset 'id-tool-quit 'eval))
-
- (if (not (fboundp 'id-tool-invoke))
- (defun id-tool-invoke (sexp)
- (if (commandp sexp)
- (call-interactively sexp)
- (funcall sexp))))
-
- (provide 'hversion)
-