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- ;;!emacs
- ;;
- ;; FILE: info-brows.el
- ;; SUMMARY: Support routines for Info inheritance browsing and error parsing.
- ;; USAGE: GNU Emacs Lisp Library
- ;; KEYWORDS: docs, help, hypermedia
- ;;
- ;; AUTHOR: Bob Weiner
- ;; ORG: Motorola Inc.
- ;;
- ;; ORIG-DATE: 7-Dec-89
- ;; LAST-MOD: 26-Apr-95 at 09:50:04 by Bob Weiner
- ;;
- ;; Copyright (C) 1989-1995 Free Software Foundation, Inc.
- ;; See the file BR-COPY for license information.
- ;;
- ;; This file is part of the OO-Browser.
- ;;
- ;; DESCRIPTION:
- ;;
- ;; Use 'info-browse' to invoke the Info OO-Browser. Prefix arg prompts for
- ;; name of Environment file.
- ;;
- ;; DESCRIP-END.
-
- ;;; ************************************************************************
- ;;; Other required Elisp libraries
- ;;; ************************************************************************
-
- (mapcar 'require '(info br-start br br-info))
-
- ;;; ************************************************************************
- ;;; Public functions
- ;;; ************************************************************************
-
- ;;;###autoload
- (defun info-browse (&optional env-file no-ui)
- "Invoke the Info OO-Browser.
- This allows browsing through Info library and system class hierarchies. With
- an optional non-nil prefix argument ENV-FILE, prompt for Environment file to
- use. Alternatively, a string value of ENV-FILE is used as the Environment
- file name. See also the file \"br-help\"."
- (interactive "P")
- (let ((same-lang (equal br-lang-prefix info-lang-prefix)))
- (if same-lang
- nil
- (if br-lang-prefix
- (br-env-copy nil)) ;; Save other language Environment in memory
- (setq br-lang-prefix info-lang-prefix
- *br-save-wconfig* nil))
- (let ((same-env (or (equal info-env-file env-file)
- (and (null env-file)
- (or info-lib-search-dirs info-sys-search-dirs)))))
- (cond
- ;; Continue browsing an Environment
- ((and same-env same-lang))
- ((and same-env (not same-lang))
- (progn (info-browse-setup) (br-env-copy t)))
- ;;
- ;; Create default Environment file specification if needed and none
- ;; exists.
- ;;
- (t (progn (or env-file (file-exists-p info-env-file)
- (br-env-create info-env-file info-lang-prefix))
- (or env-file (setq env-file info-env-file))
- ;;
- ;; Start browsing a new Environment.
- ;;
- (info-browse-setup)
- (setq *br-save-wconfig* nil
- info-env-file (br-env-init env-file same-lang nil)
- info-sys-search-dirs br-sys-search-dirs
- info-lib-search-dirs br-lib-search-dirs))))))
- (or no-ui (br-browse)))
-
- ;; Don't filter Environment classes when listed.
- (fset 'info-class-list-filter 'identity)
-
- (defun info-class-definition-regexp (class)
- "Return regexp to uniquely match the definition of CLASS name."
- (concat info-class-name-before (regexp-quote class)
- info-class-name-after))
-
- ;;; ************************************************************************
- ;;; Internal functions
- ;;; ************************************************************************
-
- (defun info-find-nd-name ()
- (let ((end))
- (save-excursion
- (skip-chars-forward info-identifier-chars)
- (setq end (point))
- (skip-chars-backward info-identifier-chars)
- (skip-chars-forward " \n")
- (buffer-substring (point) end))))
-
- (defun info-browse-setup ()
- "Setup language-dependent functions for OO-Browser."
- (br-setup-functions)
- ;; Use this until an info function is implemented for the language.
- (fmakunbound 'br-insert-class-info)
- (fset 'br-store-class-info 'info-store-class-info)
- (fset 'br-lang-mode 'Info-mode)
- (fset 'br-find-class-name 'info-find-nd-name)
- (br-setup-constants))
-
- (provide 'info-browse)
-