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eae7eecde0
keywords. (idlwave-help-assistant-command): Include ".exe" for ms-dos etc. Assistant command.
1358 lines
48 KiB
EmacsLisp
1358 lines
48 KiB
EmacsLisp
;;; idlw-help.el --- HTML Help code for IDLWAVE
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;; Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
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;; Free Software Foundation, Inc.
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;;
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;; Authors: J.D. Smith <jdsmith@as.arizona.edu>
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;; Carsten Dominik <dominik@science.uva.nl>
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;; Maintainer: J.D. Smith <jdsmith@as.arizona.edu>
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;; Version: 6.1_em22
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;; This file is part of GNU Emacs.
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;; This file is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; This file is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; The help link information for IDLWAVE's online help feature for
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;; system routines is extracted automatically from the IDL
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;; documentation, and is available, along with general routine
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;; information, in the file idlw-rinfo.el. The HTML help file
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;; themselves are not distributable with Emacs, but are available,
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;; along with new versions of IDLWAVE, documentation, and more
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;; information, at:
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;;
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;; http://idlwave.org
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;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;; Code:
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(defvar idlwave-help-browse-url-available nil
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"Whether browse-url is available")
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(setq idlwave-help-browse-url-available
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(condition-case nil
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(require 'browse-url)
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(error nil)))
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(defgroup idlwave-online-help nil
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"Online Help options for IDLWAVE mode."
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:group 'idlwave)
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(defcustom idlwave-html-help-pre-v6 nil
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"Whether pre or post-v6.0 IDL help documents are being used."
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:group 'idlwave-online-help
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:type 'boolean)
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(defvar idlwave-html-link-sep
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(if idlwave-html-help-pre-v6 "#" "#wp"))
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(defcustom idlwave-html-system-help-location "help/online_help/"
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"The directory, relative to idlwave-system-directory, where the idl
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HTML help files live, for IDL 6.2 and later. This location, if found,
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is used in preference to the old idlwave-html-help-location."
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:group 'idlwave-online-help
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:type 'directory)
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(defcustom idlwave-html-help-location
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(if (memq system-type '(ms-dos windows-nt))
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nil
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"/usr/local/etc/")
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"The directory where the idl_html_help/ dir lives. Obsolete for IDL
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6.2 or later (see idlwave-html-system-help-location)."
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:group 'idlwave-online-help
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:type 'directory)
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(defvar idlwave-help-use-hh nil
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"Obsolete variable.")
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(defcustom idlwave-help-use-assistant t
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"Whether to use the IDL Assistant as the help browser."
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:group 'idlwave-online-help
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:type 'boolean)
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(defcustom idlwave-help-browser-function browse-url-browser-function
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"Function to use to display html help.
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Defaults to `browse-url-browser-function', which see."
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:group 'idlwave-online-help
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:type 'function)
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(defcustom idlwave-help-browser-generic-program browse-url-generic-program
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"Program to run if using browse-url-generic-program."
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:group 'idlwave-online-help
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:type 'string)
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(defvar browse-url-generic-args)
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(defcustom idlwave-help-browser-generic-args
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(if (boundp 'browse-url-generic-args)
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browse-url-generic-args "")
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"Program args to use if using browse-url-generic-program."
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:group 'idlwave-online-help
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:type 'string)
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(defcustom idlwave-help-browser-is-local nil
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"Whether the browser will display locally in an Emacs window.
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Several browsers run and/or display inside Emacs windows, but most are
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external programs. If the browser name contains \"-w3\", it is
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assumed to be local to Emacs. For other local browsers, this variable
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must be explicitly set non-nil in order for the variable
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`idlwave-help-use-dedicated-frame' to function."
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:group 'idlwave-online-help
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:type 'boolean)
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(defvar idlwave-help-directory ""
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"Obsolete variable. See idlwave-html-help-location.")
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(defcustom idlwave-help-use-dedicated-frame t
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"*Non-nil means, use a separate frame for Online Help if possible."
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:group 'idlwave-online-help
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:type 'boolean)
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(defcustom idlwave-help-frame-parameters
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'((height . 32) (unsplittable . t))
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"The frame parameters for the special Online Help frame.
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See also `idlwave-help-use-dedicated-frame'.
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If you do not set the frame width here, the value specified in
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`idlw-help.el' will be used."
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:group 'idlwave-online-help
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:type '(repeat
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(cons symbol sexp)))
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(defcustom idlwave-max-popup-menu-items 20
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"Maximum number of items per pane in popup menus.
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Currently only used for class selection during completion help."
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:group 'idlwave-online-help
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:type 'integer)
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(defcustom idlwave-extra-help-function 'idlwave-help-with-source
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"The function to call for online help if the normal help fails.
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Online help works only for system routines which are described in the
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IDL manuals. A function may be specified to access help from other sources.
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The function must accept four arguments: NAME, TYPE, CLASS, KEYWORD.
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The Help buffer is current when this function is called, and the help
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text should be loaded into this buffer. If help is found, the
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function should return the buffer position which should be used as
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`window-start' in the help window. Also, the variable
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`idlwave-help-mode-line-indicator' should be set to a useful string,
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which will be displayed in the mode line of the help window. If
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should also set the variable `idlwave-help-min-frame-width' to a
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positive integer. IDLWAVE will ensure that the help frame is at least
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that many columns wide. Failure to find help should be indicated by
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throwing an error.
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When this variable is non-nil, IDLWAVE will allow the mouse-3 help click
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for every routine and keyword, even though the item may not be highlighted
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in blue (indicating the availability of system documentation).
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The default value for this function is `idlwave-help-with-source' which
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loads the routine source file into the help buffer. If you try to write
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a different function which accesses a special help file or so, it is
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probably a good idea to still call this function as a fallback."
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:group 'idlwave-online-help
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:type 'symbol)
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(defcustom idlwave-help-fontify-source-code nil
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"*Non-nil means, fontify source code displayed as help like normal code."
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:group 'idlwave-online-help
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:type 'boolean)
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(defcustom idlwave-help-source-try-header t
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"*Non-nil means, try to find help in routine header when displaying source.
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Routines which are not documented in the system manual use their source as
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help text. When this variable is non-nil, we try to find a description of
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the help item in the first routine doclib header above the routine definition.
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If the variable is nil, or if we cannot find/parse the header, the routine
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definition is displayed instead."
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:group 'idlwave-online-help
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:type 'boolean)
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(defcustom idlwave-help-doclib-name "name"
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"*A regexp for the heading word to search for in doclib headers
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which specifies the `name' section. Can be used for localization
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support."
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:group 'idlwave-online-help
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:type 'string)
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(defcustom idlwave-help-doclib-keyword "KEYWORD"
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"*A regexp for the heading word to search for in doclib headers
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which specifies the `keywords' section. Can be used for localization
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support."
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:group 'idlwave-online-help
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:type 'string)
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(defface idlwave-help-link
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'((((class color)) (:foreground "Blue"))
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(t (:weight bold)))
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"Face for highlighting links into IDLWAVE online help."
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:group 'idlwave-online-help)
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(defvar idlwave-help-activate-links-aggressively nil
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"Obsolete variable.")
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(defvar idlwave-completion-help-info)
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(defvar idlwave-help-frame nil
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"The frame for display of IDL online help.")
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(defvar idlwave-help-frame-width 102
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"The default width of the help frame.")
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(defvar idlwave-html-help-is-available nil
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"Is the system online help text avaiable?")
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(defvar idlwave-help-mode-line-indicator ""
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"Used for the special mode line in the idlwave-help-mode.")
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(defvar idlwave-help-window-configuration nil)
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(defvar idlwave-help-special-topic-words nil) ; defined by get_rinfo
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;; Define the key bindings for the Help application
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(defvar idlwave-help-mode-map (make-sparse-keymap)
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"The keymap used in idlwave-help-mode.")
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(define-key idlwave-help-mode-map "q" 'idlwave-help-quit)
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(define-key idlwave-help-mode-map "w" 'widen)
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(define-key idlwave-help-mode-map "\C-m" (lambda (arg)
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(interactive "p")
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(scroll-up arg)))
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(define-key idlwave-help-mode-map " " 'scroll-up)
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(define-key idlwave-help-mode-map [delete] 'scroll-down)
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(define-key idlwave-help-mode-map "h" 'idlwave-help-find-header)
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(define-key idlwave-help-mode-map "H" 'idlwave-help-find-first-header)
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(define-key idlwave-help-mode-map "." 'idlwave-help-toggle-header-match-and-def)
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(define-key idlwave-help-mode-map "F" 'idlwave-help-fontify)
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(define-key idlwave-help-mode-map "\M-?" 'idlwave-help-return-to-calling-frame)
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(define-key idlwave-help-mode-map "x" 'idlwave-help-return-to-calling-frame)
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;; Define the menu for the Help application
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(easy-menu-define
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idlwave-help-menu idlwave-help-mode-map
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"Menu for Help IDLWAVE system"
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'("IDLHelp"
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["Definition <-> Help Text" idlwave-help-toggle-header-match-and-def t]
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["Find DocLib Header" idlwave-help-find-header t]
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["Find First DocLib Header" idlwave-help-find-first-header t]
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["Fontify help buffer" idlwave-help-fontify t]
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"--"
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["Quit" idlwave-help-quit t]))
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(defvar idlwave-help-def-pos)
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(defvar idlwave-help-args)
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(defvar idlwave-help-in-header)
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(defun idlwave-help-mode ()
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"Major mode for displaying IDL Help.
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This is a VIEW mode for the ASCII version of IDL Help files,
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with some extras. Its main purpose is speed - so don't
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expect a fully hyper-linked help.
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Scrolling: SPC DEL RET
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Text Searches: Inside Topic: Use Emacs search functions
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Exit: [q]uit or mouse button 3 will kill the frame
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When the hep text is a source file, the following commands are available
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Fontification: [F]ontify the buffer like source code
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Jump: [h] to function doclib header
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[H] to file doclib header
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[.] back and forward between header and definition
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Here are all keybindings.
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\\{idlwave-help-mode-map}"
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(kill-all-local-variables)
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(buffer-disable-undo)
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(setq major-mode 'idlwave-help-mode
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mode-name "IDLWAVE Help")
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(use-local-map idlwave-help-mode-map)
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(easy-menu-add idlwave-help-menu idlwave-help-mode-map)
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(setq truncate-lines t)
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(setq case-fold-search t)
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(setq mode-line-format
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(list ""
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'mode-line-modified
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'mode-line-buffer-identification
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": " 'idlwave-help-mode-line-indicator
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" -%-"))
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(setq buffer-read-only t)
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(set (make-local-variable 'idlwave-help-def-pos) nil)
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(set (make-local-variable 'idlwave-help-args) nil)
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(set (make-local-variable 'idlwave-help-in-header) nil)
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(run-hooks 'idlwave-help-mode-hook))
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(defun idlwave-html-help-location ()
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"Return the help directory where HTML files are, or nil if that is unknown."
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(let ((syshelp-dir (expand-file-name
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idlwave-html-system-help-location (idlwave-sys-dir)))
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(help-dir (or (and (stringp idlwave-html-help-location)
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(> (length idlwave-html-help-location) 0)
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idlwave-html-help-location)
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(getenv "IDLWAVE_HELP_LOCATION"))))
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(if (and syshelp-dir (file-directory-p syshelp-dir))
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syshelp-dir
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(if help-dir
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(progn
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(setq help-dir (expand-file-name "idl_html_help" help-dir))
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(if (file-directory-p help-dir) help-dir))))))
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(defvar idlwave-help-assistant-available nil)
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(defun idlwave-help-check-locations ()
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;; Check help locations and assistant.
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(let ((sys-dir (idlwave-sys-dir))
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(help-loc (idlwave-html-help-location)))
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(if (or (not (file-directory-p sys-dir))
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(not help-loc)
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(not (file-directory-p help-loc)))
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(message
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"HTML help location not found: try setting `idlwave-system-directory' and/or `idlwave-html-help-location'."))
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;; see if we have the assistant
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(when (and idlwave-help-use-assistant
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(not (eq (idlwave-help-assistant-available) t)))
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(message "Cannot locate IDL Assistant, enabling default browser.")
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(setq idlwave-help-use-assistant nil)
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(unless idlwave-help-browse-url-available
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(error "browse-url is not available; install it or IDL Assistant to use HTML help.")))))
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(defvar idlwave-current-obj_new-class)
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(defvar idlwave-help-diagnostics)
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(defvar idlwave-experimental)
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(defvar idlwave-last-context-help-pos)
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(defun idlwave-do-context-help (&optional arg)
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"Wrapper around the call to idlwave-context-help1.
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It collects and prints the diagnostics messages."
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(let ((marker (list (current-buffer) (point)))
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(idlwave-help-diagnostics nil))
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;; Check for frame switching. When the command is invoked twice
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;; at the same position, we try to switch to the help frame
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;; FIXME: Frame switching works only on XEmacs
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(if (and idlwave-experimental
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(equal last-command this-command)
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(equal idlwave-last-context-help-pos marker))
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(idlwave-help-select-help-frame)
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;; Do the real thing.
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(setq idlwave-last-context-help-pos marker)
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(idlwave-do-context-help1 arg)
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(if idlwave-help-diagnostics
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(message "%s" (mapconcat 'identity
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(nreverse idlwave-help-diagnostics)
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"; "))))))
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(defvar idlwave-help-do-class-struct-tag nil)
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(defvar idlwave-structtag-struct-location)
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(defvar idlwave-help-do-struct-tag nil)
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(defvar idlwave-system-variables-alist)
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(defvar idlwave-executive-commands-alist)
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(defvar idlwave-system-class-info)
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(defun idlwave-do-context-help1 (&optional arg)
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"The work-horse version of `idlwave-context-help', which see."
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(save-excursion
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(if (equal (char-after) ?/)
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(forward-char 1)
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(if (equal (char-before) ?=)
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(backward-char 1)))
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(let* ((idlwave-query-class nil)
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(idlwave-force-class-query (equal arg '(4)))
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(chars "a-zA-Z0-9_$.!")
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(beg (save-excursion (skip-chars-backward chars) (point)))
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(end (save-excursion (skip-chars-forward chars) (point)))
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(this-word (buffer-substring-no-properties beg end))
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(st-ass (assoc-string this-word
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idlwave-help-special-topic-words t))
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(classtag (and (string-match "self\\." this-word)
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(< beg (- end 4))))
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(structtag (and (fboundp 'idlwave-complete-structure-tag)
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(string-match "\\`\\([^.]+\\)\\." this-word)
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(< beg (- end 4))))
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module keyword cw mod1 mod2 mod3)
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(if (or arg
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(and (not classtag)
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(not structtag)
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(not (member (string-to-char this-word) '(?! ?.)))))
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;; Need the module information
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(progn
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;; MODULE is (name type class), for this or any inheriting class
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(setq module (idlwave-what-module-find-class)
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cw (nth 2 (idlwave-where))) ;what would we complete here?
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;; Correct for OBJ_NEW, we may need an INIT method instead.
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(if (equal (idlwave-downcase-safe (car module)) "obj_new")
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(let* ((bos (save-excursion (idlwave-beginning-of-statement)
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(point)))
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(str (buffer-substring bos (point))))
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(if (string-match "OBJ_NEW([ \t]*['\"]\\([a-zA-Z][a-zA-Z0-9$_]+\\)['\"]" str)
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(setq module (list "init" 'fun (match-string 1 str))
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idlwave-current-obj_new-class (match-string 1 str))
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)))))
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(cond
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(arg (setq mod1 module))
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;; A special topic -- only system help
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||
((and st-ass (not (memq cw '(function-keyword procedure-keyword))))
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(setq mod1 (list (cdr st-ass))))
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;; A system variable -- only system help
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((string-match
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"\\`!\\([a-zA-Z0-9_]+\\)\\(\.\\([A-Za-z0-9_]+\\)\\)?"
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this-word)
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(let* ((word (match-string-no-properties 1 this-word))
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(entry (assq (idlwave-sintern-sysvar word)
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idlwave-system-variables-alist))
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||
(tag (match-string-no-properties 3 this-word))
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||
(tag-target (if tag
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||
(cdr
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(assq (idlwave-sintern-sysvartag tag)
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(cdr (assq 'tags entry))))))
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||
(link (nth 1 (assq 'link entry))))
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||
(if tag-target
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||
(setq link (idlwave-substitute-link-target link
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tag-target)))
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||
(setq mod1 (list link))))
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||
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;; An executive command -- only system help
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||
((string-match "^\\.\\([A-Z_]+\\)" this-word)
|
||
(let* ((word (match-string 1 this-word))
|
||
(link (cdr (assoc-string
|
||
word
|
||
idlwave-executive-commands-alist t))))
|
||
(setq mod1 (list link))))
|
||
|
||
;; A class -- system OR in-text help (via class__define).
|
||
((and (eq cw 'class)
|
||
(or (idlwave-in-quote) ; e.g. obj_new
|
||
(re-search-backward "\\<inherits[ \t]+[A-Za-z0-9_]*\\="
|
||
(max (point-min) (- (point) 40)) t)))
|
||
;; Class completion inside string delimiters must be
|
||
;; the class inside OBJ_NEW.
|
||
(let* ((entry (assq
|
||
(idlwave-sintern-class this-word)
|
||
idlwave-system-class-info))
|
||
(name (concat (downcase this-word) "__define"))
|
||
(link (nth 1 (assq 'link entry))))
|
||
(setq mod1 (list link name 'pro))))
|
||
|
||
;; A class structure tag (self.BLAH) -- only in-text help available
|
||
(classtag
|
||
(let ((tag (substring this-word (match-end 0)))
|
||
class-with found-in)
|
||
(when (setq class-with
|
||
(idlwave-class-or-superclass-with-tag
|
||
(nth 2 (idlwave-current-routine))
|
||
tag))
|
||
(setq found-in (idlwave-class-found-in class-with))
|
||
(if (assq (idlwave-sintern-class class-with)
|
||
idlwave-system-class-info)
|
||
(error "No help available for system class tags"))
|
||
(setq idlwave-help-do-class-struct-tag t)
|
||
(setq mod1 (list nil
|
||
(if found-in
|
||
(cons (concat found-in "__define") class-with)
|
||
(concat class-with "__define"))
|
||
'pro
|
||
nil ; no class.... it's a procedure!
|
||
tag)))))
|
||
|
||
;; A regular structure tag -- only in text, and if
|
||
;; optional `complete-structtag' loaded.
|
||
(structtag
|
||
(let ((var (match-string 1 this-word))
|
||
(tag (substring this-word (match-end 0))))
|
||
;; Check if we need to update the "current" structure
|
||
(idlwave-prepare-structure-tag-completion var)
|
||
(setq idlwave-help-do-struct-tag
|
||
idlwave-structtag-struct-location
|
||
mod1 (list nil nil nil nil tag))))
|
||
|
||
;; A routine keyword -- in text or system help
|
||
((and (memq cw '(function-keyword procedure-keyword))
|
||
(stringp this-word)
|
||
(string-match "\\S-" this-word)
|
||
(not (string-match "!" this-word)))
|
||
(cond ((or (= (char-before beg) ?/)
|
||
(save-excursion (goto-char end)
|
||
(looking-at "[ \t]*=")))
|
||
;; Certainly a keyword. Check for abbreviation etc.
|
||
(setq keyword (idlwave-expand-keyword this-word module))
|
||
(cond
|
||
((null keyword)
|
||
(idlwave-help-diagnostics
|
||
(format "%s does not accept `%s' kwd"
|
||
(idlwave-make-full-name (nth 2 module)
|
||
(car module))
|
||
(upcase this-word))
|
||
'ding))
|
||
((consp keyword)
|
||
(idlwave-help-diagnostics
|
||
(format "%d matches for kwd abbrev `%s'"
|
||
(length keyword) this-word)
|
||
'ding)
|
||
;; We continue anyway with the first match...
|
||
(setq keyword (car keyword))))
|
||
;; Keyword, or just module
|
||
(setq mod1 (append (list t) module (list keyword)))
|
||
(setq mod2 (append (list t) module)))
|
||
((equal (char-after end) ?\()
|
||
;; A function - what-module will have caught this
|
||
(setq mod1 (append (list t) module)))
|
||
(t
|
||
;; undecided - try function, keyword, then enclosing mod.
|
||
;; Check for keyword abbreviations, but do not report
|
||
;; errors, because it might be something else.
|
||
;; FIXME: is this a good way to handle this?
|
||
(setq keyword (idlwave-expand-keyword this-word module))
|
||
(if (consp keyword) (setq keyword (car keyword)))
|
||
(setq mod1 (append (list t) module (list keyword))
|
||
mod2 (list t this-word 'fun nil)
|
||
mod3 (append (list t) module)))))
|
||
|
||
;; Everything else
|
||
(t
|
||
(setq mod1 (append (list t) module))))
|
||
(if mod3
|
||
(condition-case nil
|
||
(apply 'idlwave-online-help mod1)
|
||
(error (condition-case nil
|
||
(apply 'idlwave-online-help mod2)
|
||
(error (apply 'idlwave-online-help mod3)))))
|
||
(if mod2
|
||
(condition-case nil
|
||
(apply 'idlwave-online-help mod1)
|
||
(error (apply 'idlwave-online-help mod2)))
|
||
(if mod1
|
||
(apply 'idlwave-online-help mod1)
|
||
(error "Don't know which item to show help for")))))))
|
||
|
||
(defun idlwave-do-mouse-completion-help (ev)
|
||
"Display online help on an item in the *Completions* buffer.
|
||
Needs additional info stored in global `idlwave-completion-help-info'."
|
||
(let* ((cw (selected-window))
|
||
(info idlwave-completion-help-info) ; global passed in
|
||
(what (nth 0 info))
|
||
(name (nth 1 info))
|
||
(type (nth 2 info))
|
||
(class (nth 3 info))
|
||
(need-class class)
|
||
(kwd (nth 4 info))
|
||
(sclasses (nth 5 info))
|
||
word link)
|
||
(mouse-set-point ev)
|
||
|
||
|
||
;; See if we can also find help somewhere, e.g. for multiple classes
|
||
(setq word (idlwave-this-word))
|
||
(if (string= word "")
|
||
(error "No help item selected"))
|
||
(setq link (get-text-property 0 'link word))
|
||
(select-window cw)
|
||
(cond
|
||
;; Routine name
|
||
((memq what '(procedure function routine))
|
||
(setq name word)
|
||
(if (or (eq class t)
|
||
(and (stringp class) sclasses))
|
||
(let* ((classes (idlwave-all-method-classes
|
||
(idlwave-sintern-method name)
|
||
type)))
|
||
(setq link t) ; No specific link valid yet
|
||
(if sclasses
|
||
(setq classes (idlwave-members-only
|
||
classes (cons class sclasses))))
|
||
(setq class (idlwave-popup-select ev classes
|
||
"Select Class" 'sort))))
|
||
|
||
;; XXX is this necessary, given all-method-classes?
|
||
(if (stringp class)
|
||
(setq class (idlwave-find-inherited-class
|
||
(idlwave-sintern-routine-or-method name class)
|
||
type (idlwave-sintern-class class)))))
|
||
|
||
;; Keyword
|
||
((eq what 'keyword)
|
||
(setq kwd word)
|
||
(if (or (eq class t)
|
||
(and (stringp class) sclasses))
|
||
(let ((classes (idlwave-all-method-keyword-classes
|
||
(idlwave-sintern-method name)
|
||
(idlwave-sintern-keyword kwd)
|
||
type)))
|
||
(setq link t) ; Link can't be correct yet
|
||
(if sclasses
|
||
(setq classes (idlwave-members-only
|
||
classes (cons class sclasses))))
|
||
(setq class (idlwave-popup-select ev classes
|
||
"Select Class" 'sort))
|
||
;; XXX is this necessary, given all-method-keyword-classes?
|
||
(if (stringp class)
|
||
(setq class (idlwave-find-inherited-class
|
||
(idlwave-sintern-routine-or-method name class)
|
||
type (idlwave-sintern-class class)))))
|
||
(if (string= (downcase name) "obj_new")
|
||
(setq class idlwave-current-obj_new-class
|
||
name "Init"))))
|
||
|
||
;; Class name
|
||
((eq what 'class)
|
||
(setq class word
|
||
word nil))
|
||
|
||
;; A special named function to call which sets some of our variables
|
||
((and (symbolp what)
|
||
(fboundp what))
|
||
(funcall what 'set word))
|
||
|
||
(t (error "Cannot help with this item")))
|
||
(if (and need-class (not class) (not (and link (not (eq link t)))))
|
||
(error "Cannot help with this item"))
|
||
(idlwave-online-help link (or name word) type class kwd)))
|
||
|
||
(defvar idlwave-highlight-help-links-in-completion)
|
||
(defvar idlwave-completion-help-links)
|
||
(defun idlwave-highlight-linked-completions ()
|
||
"Highlight all completions for which help is available and attach link.
|
||
Those words in `idlwave-completion-help-links' have links. The
|
||
`idlwave-help-link' face is used for this."
|
||
(if idlwave-highlight-help-links-in-completion
|
||
(with-current-buffer (get-buffer "*Completions*")
|
||
(save-excursion
|
||
(let* ((case-fold-search t)
|
||
(props (list 'face 'idlwave-help-link))
|
||
(info idlwave-completion-help-info) ; global passed in
|
||
(what (nth 0 info)) ; what was completed, or a func
|
||
(class (nth 3 info)) ; any class
|
||
word beg end doit)
|
||
(goto-char (point-min))
|
||
(re-search-forward "possible completions are:" nil t)
|
||
(while (re-search-forward "\\s-\\([A-Za-z0-9_.]+\\)\\(\\s-\\|\\'\\)"
|
||
nil t)
|
||
(setq beg (match-beginning 1) end (match-end 1)
|
||
word (match-string 1) doit nil)
|
||
;; Call special completion function test
|
||
(if (and (symbolp what)
|
||
(fboundp what))
|
||
(setq doit (funcall what 'test word))
|
||
;; Look for special link property passed in help-links
|
||
(if idlwave-completion-help-links
|
||
(setq doit (assoc-string
|
||
word idlwave-completion-help-links t))))
|
||
(when doit
|
||
(if (consp doit)
|
||
(setq props (append props `(link ,(cdr doit)))))
|
||
(let ((buffer-read-only nil))
|
||
(add-text-properties beg end props)))
|
||
(goto-char end)))))))
|
||
|
||
;; Arrange for this function to be called after completion
|
||
(add-hook 'idlwave-completion-setup-hook
|
||
'idlwave-highlight-linked-completions)
|
||
|
||
(defvar idlwave-help-return-frame nil
|
||
"The frame to return to from the help frame.")
|
||
|
||
(defun idlwave-help-quit ()
|
||
"Exit IDLWAVE Help buffer. Kill the dedicated frame if any."
|
||
(interactive)
|
||
(cond ((and idlwave-help-use-dedicated-frame
|
||
(eq (selected-frame) idlwave-help-frame))
|
||
(if (and idlwave-experimental
|
||
(frame-live-p idlwave-help-return-frame))
|
||
;; Try to select the return frame.
|
||
;; This can crash on slow network connections, obviously when
|
||
;; we kill the help frame before the return-frame is selected.
|
||
;; To protect the workings, we wait for up to one second
|
||
;; and check if the return-frame *is* now selected.
|
||
;; This is marked "eperimental" since we are not sure when its OK.
|
||
(let ((maxtime 1.0) (time 0.) (step 0.1))
|
||
(select-frame idlwave-help-return-frame)
|
||
(while (and (sit-for step)
|
||
(not (eq (selected-frame)
|
||
idlwave-help-return-frame))
|
||
(< (setq time (+ time step)) maxtime)))))
|
||
(delete-frame idlwave-help-frame))
|
||
((window-configuration-p idlwave-help-window-configuration)
|
||
(set-window-configuration idlwave-help-window-configuration)
|
||
(select-window (previous-window)))
|
||
(t (kill-buffer (idlwave-help-get-help-buffer)))))
|
||
|
||
|
||
(defvar default-toolbar-visible-p)
|
||
|
||
(defun idlwave-help-display-help-window (&optional pos-or-func)
|
||
"Display the help window.
|
||
Move window start to POS-OR-FUNC, if passed as a position, or call it
|
||
if passed as a function. See `idlwave-help-use-dedicated-frame'."
|
||
(let ((cw (selected-window))
|
||
(buf (idlwave-help-get-help-buffer)))
|
||
(if (and window-system idlwave-help-use-dedicated-frame)
|
||
(progn
|
||
(idlwave-help-show-help-frame)
|
||
(switch-to-buffer buf))
|
||
;; Do it in this frame and save the window configuration
|
||
(if (not (get-buffer-window buf nil))
|
||
(setq idlwave-help-window-configuration
|
||
(current-window-configuration)))
|
||
(display-buffer buf nil (selected-frame))
|
||
(select-window (get-buffer-window buf)))
|
||
(raise-frame)
|
||
(if pos-or-func
|
||
(if (functionp pos-or-func)
|
||
(funcall pos-or-func)
|
||
(goto-char pos-or-func)
|
||
(recenter 0)))
|
||
(select-window cw)))
|
||
|
||
(defun idlwave-help-select-help-frame ()
|
||
"Select the help frame."
|
||
(if (and (frame-live-p idlwave-help-frame)
|
||
(not (eq (selected-frame) idlwave-help-frame)))
|
||
(progn
|
||
(setq idlwave-help-return-frame (selected-frame))
|
||
(select-frame idlwave-help-frame))))
|
||
|
||
(defun idlwave-help-return-to-calling-frame ()
|
||
"Select the frame from which the help frame was selected."
|
||
(interactive)
|
||
(if (and (frame-live-p idlwave-help-return-frame)
|
||
(not (eq (selected-frame) idlwave-help-return-frame)))
|
||
(select-frame idlwave-help-return-frame)))
|
||
|
||
(defun idlwave-online-help (link &optional name type class keyword)
|
||
"Display HTML or other special help on a certain topic.
|
||
Either loads an HTML link, if LINK is non-nil, or gets special-help on
|
||
the optional arguments, if any special help is defined. If LINK is
|
||
`t', first look up the optional arguments in the routine info list to
|
||
see if a link is set for it. Try extra help functions if necessary."
|
||
;; Lookup link
|
||
(if (eq link t)
|
||
(let ((entry (idlwave-best-rinfo-assoc name type class
|
||
(idlwave-routines) nil t)))
|
||
(if entry
|
||
(cond
|
||
;; Try keyword link
|
||
((and keyword
|
||
(setq link (cdr
|
||
(idlwave-entry-find-keyword entry keyword)))))
|
||
;; Default, regular entry link
|
||
(t (setq link (idlwave-entry-has-help entry))))
|
||
(if (and
|
||
class
|
||
;; Check for system class help
|
||
(setq entry (assq (idlwave-sintern-class class)
|
||
idlwave-system-class-info)
|
||
link (nth 1 (assq 'link entry))))
|
||
(message
|
||
(concat "No routine info for %s"
|
||
", falling back on class help.")
|
||
(idlwave-make-full-name class name))))))
|
||
|
||
(cond
|
||
;; An explicit link
|
||
((stringp link)
|
||
(idlwave-help-html-link link))
|
||
|
||
;; Any extra help
|
||
(idlwave-extra-help-function
|
||
(idlwave-help-get-special-help name type class keyword))
|
||
|
||
;; Nothing worked
|
||
(t (idlwave-help-error name type class keyword))))
|
||
|
||
|
||
(defun idlwave-help-get-special-help (name type class keyword)
|
||
"Call the function given by `idlwave-extra-help-function'."
|
||
(let* ((cw (selected-window))
|
||
(help-pos (save-excursion
|
||
(set-buffer (idlwave-help-get-help-buffer))
|
||
(let ((buffer-read-only nil))
|
||
(funcall idlwave-extra-help-function
|
||
name type class keyword)))))
|
||
(if help-pos
|
||
(idlwave-help-display-help-window help-pos)
|
||
(idlwave-help-error name type class keyword))
|
||
(select-window cw)))
|
||
|
||
(defun idlwave-help-html-link (link)
|
||
"Get html help on a given LINK."
|
||
(let ((browse-url-browser-function idlwave-help-browser-function)
|
||
(help-loc (idlwave-html-help-location))
|
||
(browse-url-generic-program idlwave-help-browser-generic-program)
|
||
;(browse-url-generic-args idlwave-help-browser-generic-args)
|
||
full-link)
|
||
|
||
;; Just a regular file name (+ anchor name)
|
||
(unless (and (stringp help-loc)
|
||
(file-directory-p help-loc))
|
||
(error "Invalid help location."))
|
||
(setq full-link (browse-url-file-url (expand-file-name link help-loc)))
|
||
|
||
;; Select the browser
|
||
(cond
|
||
(idlwave-help-use-assistant
|
||
(idlwave-help-assistant-open-link link))
|
||
|
||
((or idlwave-help-browser-is-local
|
||
(string-match "w3" (symbol-name idlwave-help-browser-function)))
|
||
(idlwave-help-display-help-window '(lambda () (browse-url full-link))))
|
||
|
||
(t (browse-url full-link)))))
|
||
|
||
;; A special help routine for source-level syntax help in files.
|
||
(defvar idlwave-help-fontify-source-code)
|
||
(defvar idlwave-help-source-try-header)
|
||
(defvar idlwave-current-tags-buffer)
|
||
(defvar idlwave-current-tags-class)
|
||
(defun idlwave-help-with-source (name type class keyword)
|
||
"Provide help for routines not documented in the IDL manuals. Works
|
||
by loading the routine source file into the help buffer. Depending on
|
||
the value of `idlwave-help-source-try-header', it attempts to show the
|
||
routine definition or the header description. If
|
||
`idlwave-help-do-class-struct-tag' is non-nil, keyword is a tag to
|
||
show help on from the class definition structure. If
|
||
`idlwave-help-do-struct-tag' is non-nil, show help from the matching
|
||
structure tag definition.
|
||
|
||
This function can be used as `idlwave-extra-help-function'."
|
||
(let* ((class-struct-tag idlwave-help-do-class-struct-tag)
|
||
(struct-tag idlwave-help-do-struct-tag)
|
||
(case-fold-search t)
|
||
(real-class (if (consp name) (cdr name)))
|
||
(name (if (consp name) (car name) name))
|
||
(class-only (and (stringp class) (not (stringp name))))
|
||
file header-pos def-pos in-buf)
|
||
(if class-only ;Help with class? Using "Init" as source.
|
||
(setq name "Init"
|
||
type 'fun))
|
||
(if (not struct-tag)
|
||
(setq file
|
||
(idlwave-routine-source-file
|
||
(nth 3 (idlwave-best-rinfo-assoc
|
||
name (or type t) class (idlwave-routines))))))
|
||
(setq idlwave-help-def-pos nil
|
||
idlwave-help-args (list name type class keyword)
|
||
idlwave-help-in-header nil
|
||
idlwave-help-do-struct-tag nil
|
||
idlwave-help-do-class-struct-tag nil)
|
||
(if (or struct-tag (stringp file))
|
||
(progn
|
||
(setq in-buf ; structure-tag completion is always in current buffer
|
||
(if struct-tag
|
||
idlwave-current-tags-buffer
|
||
(idlwave-get-buffer-visiting file)))
|
||
;; see if file is in a visited buffer, insert those contents
|
||
(if in-buf
|
||
(progn
|
||
(setq file (buffer-file-name in-buf))
|
||
(erase-buffer)
|
||
(insert-buffer-substring in-buf))
|
||
(if (file-exists-p file) ;; otherwise just load the file
|
||
(progn
|
||
(erase-buffer)
|
||
(insert-file-contents file nil nil nil 'replace))
|
||
(idlwave-help-error name type class keyword)))
|
||
(goto-char (point-min))
|
||
(if (and idlwave-help-fontify-source-code (not in-buf))
|
||
(idlwave-help-fontify)))
|
||
(idlwave-help-error name type class keyword))
|
||
(setq idlwave-help-mode-line-indicator file)
|
||
|
||
;; Try to find a good place to display
|
||
(setq def-pos
|
||
;; Find the class structure tag if that's what we're after
|
||
(cond
|
||
;; Class structure tags: find the class or named structure
|
||
;; definition
|
||
(class-struct-tag
|
||
(save-excursion
|
||
(setq class
|
||
(if (string-match "[a-zA-Z0-9]\\(__\\)" name)
|
||
(substring name 0 (match-beginning 1))
|
||
idlwave-current-tags-class))
|
||
(and
|
||
(idlwave-find-class-definition class nil real-class)
|
||
(idlwave-find-struct-tag keyword))))
|
||
|
||
;; Generic structure tags: the structure definition
|
||
;; location within the file has been recorded in
|
||
;; `struct-tag'
|
||
(struct-tag
|
||
(save-excursion
|
||
(and
|
||
(integerp struct-tag)
|
||
(goto-char struct-tag)
|
||
(idlwave-find-struct-tag keyword))))
|
||
|
||
;; Just find the routine definition
|
||
(t
|
||
(if class-only (point-min)
|
||
(idlwave-help-find-routine-definition name type class keyword))))
|
||
idlwave-help-def-pos def-pos)
|
||
|
||
(if (and idlwave-help-source-try-header
|
||
(not (or struct-tag class-struct-tag)))
|
||
;; Check if we can find the header
|
||
(save-excursion
|
||
(goto-char (or def-pos (point-max)))
|
||
(setq header-pos (idlwave-help-find-in-doc-header
|
||
name type class keyword 'exact)
|
||
idlwave-help-in-header header-pos)))
|
||
|
||
(if (or header-pos def-pos)
|
||
(progn
|
||
(if (boundp 'idlwave-help-min-frame-width)
|
||
(setq idlwave-help-min-frame-width 80))
|
||
(goto-char (or header-pos def-pos)))
|
||
(idlwave-help-error name type class keyword))
|
||
|
||
(point)))
|
||
|
||
|
||
(defun idlwave-help-find-routine-definition (name type class keyword)
|
||
"Find the definition of routine CLASS::NAME in current buffer.
|
||
KEYWORD is ignored. Returns the point of match if successful, nil otherwise."
|
||
(save-excursion
|
||
(goto-char (point-max))
|
||
(if (re-search-backward
|
||
(concat "^[ \t]*"
|
||
(if (eq type 'pro) "pro"
|
||
(if (eq type 'fun) "function"
|
||
"\\(pro\\|function\\)"))
|
||
"[ \t]+"
|
||
(regexp-quote (downcase (idlwave-make-full-name class name)))
|
||
"[, \t\r\n]")
|
||
nil t)
|
||
(match-beginning 0)
|
||
nil)))
|
||
|
||
(defvar idlwave-doclib-start)
|
||
(defvar idlwave-doclib-end)
|
||
(defun idlwave-help-find-in-doc-header (name type class keyword
|
||
&optional exact)
|
||
"Find the requested help in the doc-header above point.
|
||
|
||
First checks if there is a doc-lib header which describes the correct
|
||
routine. Then tries to find the KEYWORDS section and the KEYWORD, if
|
||
given. Returns the point which should be window start of the help
|
||
window. If EXACT is non-nil, the full help position must be found -
|
||
down to the keyword requested. This setting is for context help, if
|
||
the exact spot is needed.
|
||
|
||
If EXACT is nil, the position of the header is returned if it
|
||
describes the correct routine - even if the keyword description cannot
|
||
be found. TYPE is ignored.
|
||
|
||
This function expects a more or less standard routine header. In
|
||
particlar it looks for the `NAME:' tag, either with a colon, or alone
|
||
on a line. Then `NAME:' must be followed by the routine name on the
|
||
same or the next line. When KEYWORD is non-nil, looks first for a
|
||
`KEYWORDS' section. It is amazing how inconsisten this is through
|
||
some IDL libraries I have seen. We settle for a line containing an
|
||
upper case \"KEYWORD\" string. If this line is not fould we search
|
||
for the keyword anyway to increase the hit-rate
|
||
|
||
When one of these sections exists we check for a line starting with any of
|
||
|
||
/KEYWORD KEYWORD- KEYWORD= KEYWORD
|
||
|
||
with spaces allowed between the keyword and the following dash or equal sign.
|
||
If there is a match, we assume it is the keyword description."
|
||
(let* ((case-fold-search t)
|
||
(rname (if (stringp class)
|
||
(concat
|
||
"\\("
|
||
;; Traditional name or class::name
|
||
"\\("
|
||
"\\(" (regexp-quote (downcase class)) "::\\)?"
|
||
(regexp-quote (downcase name))
|
||
"\\>\\)"
|
||
(concat
|
||
"\\|"
|
||
;; class__define or just class
|
||
(regexp-quote (downcase class)) "\\(__define\\)?")
|
||
"\\)")
|
||
(regexp-quote (downcase name))))
|
||
|
||
;; NAME tag plus the routine name. The new version is from JD.
|
||
(name-re (concat
|
||
"\\(^;+\\*?[ \t]*"
|
||
idlwave-help-doclib-name
|
||
"\\([ \t]*:\\|[ \t]*$\\)[ \t]*\\(\n;+[ \t]*\\)*"
|
||
rname
|
||
"\\|"
|
||
"^;+[ \t]*"
|
||
rname
|
||
":[ \t]*$\\)"))
|
||
|
||
;; Header start plus name
|
||
(header-re (concat "\\(" idlwave-doclib-start "\\).*\n"
|
||
"\\(^;+.*\n\\)*"
|
||
"\\(" name-re "\\)"))
|
||
;; A keywords section
|
||
(kwds-re (concat ; forgiving
|
||
"^;+\\*?[ \t]*"
|
||
"\\([-A-Z_ ]*"
|
||
idlwave-help-doclib-keyword
|
||
"[-A-Z_ ]*\\)"
|
||
"\\(:\\|[ \t]*\n\\)"))
|
||
|
||
;; The individual keyword description line.
|
||
(kwd-re (if keyword ; hard (well...)
|
||
(concat
|
||
"^;+[ \t]+"
|
||
"\\(/" (regexp-quote (upcase keyword))
|
||
"\\|" (regexp-quote (upcase keyword)) "[ \t]*[-=:\n]"
|
||
"\\)")))
|
||
(kwd-re2 (if keyword ; forgiving
|
||
(concat
|
||
"^;+[ \t]+"
|
||
(regexp-quote (upcase keyword))
|
||
"\\>")))
|
||
dstart dend name-pos kwds-pos kwd-pos)
|
||
(catch 'exit
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(while (and (setq dstart (re-search-forward idlwave-doclib-start nil t))
|
||
(setq dend (re-search-forward idlwave-doclib-end nil t)))
|
||
;; found a routine header
|
||
(goto-char dstart)
|
||
(if (setq name-pos (re-search-forward name-re dend t))
|
||
(progn
|
||
(if keyword
|
||
;; We do need a keyword
|
||
(progn
|
||
;; Try to find a keyword section, but don't force it.
|
||
(goto-char name-pos)
|
||
(if (let ((case-fold-search nil))
|
||
(re-search-forward kwds-re dend t))
|
||
(setq kwds-pos (match-beginning 0)))
|
||
;; Find the keyword description
|
||
(if (or (let ((case-fold-search nil))
|
||
(re-search-forward kwd-re dend t))
|
||
(re-search-forward kwd-re dend t)
|
||
(let ((case-fold-search nil))
|
||
(re-search-forward kwd-re2 dend t))
|
||
(re-search-forward kwd-re2 dend t))
|
||
(setq kwd-pos (match-beginning 0))
|
||
(if exact
|
||
(progn
|
||
(idlwave-help-diagnostics
|
||
(format "Could not find description of kwd %s"
|
||
(upcase keyword)))
|
||
(throw 'exit nil))))))
|
||
;; Return the best position we got
|
||
(throw 'exit (or kwd-pos kwds-pos name-pos dstart)))
|
||
(goto-char dend))))
|
||
(idlwave-help-diagnostics "Could not find doclib header")
|
||
(throw 'exit nil))))
|
||
|
||
(defun idlwave-help-diagnostics (string &optional ding)
|
||
"Add a diagnostics string to the list.
|
||
When DING is non-nil, ring the bell as well."
|
||
(if (boundp 'idlwave-help-diagnostics)
|
||
(progn
|
||
(setq idlwave-help-diagnostics
|
||
(cons string idlwave-help-diagnostics))
|
||
(if ding (ding)))))
|
||
|
||
(defun idlwave-help-toggle-header-top-and-def (arg)
|
||
(interactive "P")
|
||
(let (pos)
|
||
(if idlwave-help-in-header
|
||
;; Header was the last thing displayed
|
||
(progn
|
||
(setq idlwave-help-in-header nil)
|
||
(setq pos idlwave-help-def-pos))
|
||
;; Try to display header
|
||
(setq pos (idlwave-help-find-in-doc-header
|
||
(nth 0 idlwave-help-args)
|
||
(nth 1 idlwave-help-args)
|
||
(nth 2 idlwave-help-args)
|
||
nil))
|
||
(if pos
|
||
(setq idlwave-help-in-header t)
|
||
(error "Cannot find doclib header for routine %s"
|
||
(idlwave-make-full-name (nth 2 idlwave-help-args)
|
||
(nth 0 idlwave-help-args)))))
|
||
(if pos
|
||
(progn
|
||
(goto-char pos)
|
||
(recenter 0)))))
|
||
|
||
(defun idlwave-help-find-first-header (arg)
|
||
(interactive "P")
|
||
(let (pos)
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(if (re-search-forward idlwave-doclib-start nil t)
|
||
(setq pos (match-beginning 0))))
|
||
(if pos
|
||
(progn
|
||
(goto-char pos)
|
||
(recenter 0))
|
||
(error "No DocLib Header in current file"))))
|
||
|
||
(defun idlwave-help-find-header (arg)
|
||
"Jump to the DocLib Header."
|
||
(interactive "P")
|
||
(if arg
|
||
(idlwave-help-find-first-header nil)
|
||
(setq idlwave-help-in-header nil)
|
||
(idlwave-help-toggle-header-match-and-def arg 'top)))
|
||
|
||
(defun idlwave-help-toggle-header-match-and-def (arg &optional top)
|
||
(interactive "P")
|
||
(let ((args idlwave-help-args)
|
||
pos)
|
||
(if idlwave-help-in-header
|
||
;; Header was the last thing displayed
|
||
(progn
|
||
(setq idlwave-help-in-header nil)
|
||
(setq pos idlwave-help-def-pos))
|
||
;; Try to display header
|
||
(setq pos (apply 'idlwave-help-find-in-doc-header
|
||
(if top
|
||
(list (car args) (nth 1 args) (nth 2 args) nil)
|
||
args)))
|
||
(if pos
|
||
(setq idlwave-help-in-header t)
|
||
(error "Cannot find doclib header for routine %s"
|
||
(idlwave-make-full-name (nth 2 idlwave-help-args)
|
||
(nth 0 idlwave-help-args)))))
|
||
(if pos
|
||
(progn
|
||
(goto-char pos)
|
||
(recenter 0)))))
|
||
|
||
(defvar font-lock-verbose)
|
||
(defvar idlwave-mode-syntax-table)
|
||
(defvar idlwave-font-lock-defaults)
|
||
(defun idlwave-help-fontify ()
|
||
"Fontify the Help buffer as source code.
|
||
Useful when source code is displayed as help. See the option
|
||
`idlwave-help-fontify-source-code'."
|
||
(interactive)
|
||
(if (featurep 'font-lock)
|
||
(let ((major-mode 'idlwave-mode)
|
||
(font-lock-verbose
|
||
(if (interactive-p) font-lock-verbose nil))
|
||
(syntax-table (syntax-table)))
|
||
(unwind-protect
|
||
(progn
|
||
(set-syntax-table idlwave-mode-syntax-table)
|
||
(set (make-local-variable 'font-lock-defaults)
|
||
idlwave-font-lock-defaults)
|
||
(font-lock-fontify-buffer))
|
||
(set-syntax-table syntax-table)))))
|
||
|
||
|
||
(defun idlwave-help-error (name type class keyword)
|
||
(error "Can't find help on %s%s %s"
|
||
(or (and (or class name) (idlwave-make-full-name class name))
|
||
"<unknown>")
|
||
(if keyword (format ", keyword %s" (upcase keyword)) "")
|
||
(if idlwave-html-help-location
|
||
""
|
||
"(help location unknown)")))
|
||
|
||
(defun idlwave-help-show-help-frame ()
|
||
"Show the help frame, creating it if necessary"
|
||
;; Use a special frame for this
|
||
(unless (frame-live-p idlwave-help-frame)
|
||
(setq idlwave-help-frame
|
||
(make-frame idlwave-help-frame-parameters))
|
||
;; Strip menubar (?) and toolbar from the Help frame.
|
||
(if (fboundp 'set-specifier)
|
||
(progn
|
||
;; XEmacs
|
||
(let ((sval (cons idlwave-help-frame nil)))
|
||
;; (set-specifier menubar-visible-p sval)
|
||
(set-specifier default-toolbar-visible-p sval)))
|
||
;; Emacs
|
||
(modify-frame-parameters idlwave-help-frame
|
||
'(;;(menu-bar-lines . 0)
|
||
(tool-bar-lines . 0)))))
|
||
(select-frame idlwave-help-frame))
|
||
|
||
(defun idlwave-help-get-help-buffer ()
|
||
"Return the IDLWAVE Help buffer. Make it first if necessary."
|
||
(let ((buf (get-buffer "*IDLWAVE Help*")))
|
||
(if buf
|
||
nil
|
||
(setq buf (get-buffer-create "*IDLWAVE Help*"))
|
||
(save-excursion
|
||
(set-buffer buf)
|
||
(idlwave-help-mode)))
|
||
buf))
|
||
|
||
(defun idlwave-grep (regexp list)
|
||
(let (rtn)
|
||
(while list
|
||
(if (string-match regexp (car list))
|
||
(setq rtn (cons (car list) rtn)))
|
||
(setq list (cdr list)))
|
||
(nreverse rtn)))
|
||
|
||
(defun idlwave-entry-has-help (entry)
|
||
(and entry (car (nth 5 entry))))
|
||
|
||
(defun idlwave-has-help (name type class)
|
||
"Does this have help associated with it?"
|
||
(let ((entry (idlwave-best-rinfo-assoc name type class (idlwave-routines))))
|
||
(idlwave-entry-has-help entry)))
|
||
|
||
;;----- Control the IDL Assistant, which shipped with IDL v6.2
|
||
(defvar idlwave-help-assistant-process nil)
|
||
(defvar idlwave-help-assistant-socket nil)
|
||
|
||
;; The Windows version does not have a !DIR/bin/* set of front-end
|
||
;; scripts, but instead only links directly to bin.x86. As a result,
|
||
;; we must pass the -profile argument as well.
|
||
(defvar idlwave-help-assistant-command
|
||
(if (memq system-type '(ms-dos windows-nt))
|
||
"bin/bin.x86/idl_assistant.exe"
|
||
"bin/idl_assistant")
|
||
"The command, rooted at idlwave-system-directory, which invokes the
|
||
IDL assistant.")
|
||
|
||
(defun idlwave-help-assistant-available ()
|
||
(if idlwave-help-assistant-available
|
||
(eq idlwave-help-assistant-available t)
|
||
(setq idlwave-help-assistant-available
|
||
(if (file-executable-p (idlwave-help-assistant-command))
|
||
t
|
||
'not-available))))
|
||
|
||
(defun idlwave-help-assistant-command ()
|
||
(expand-file-name idlwave-help-assistant-command (idlwave-sys-dir)))
|
||
|
||
(defun idlwave-help-assistant-start (&optional full-link)
|
||
"Start the IDL Assistant, loading link FULL-LINK, if passed."
|
||
(when (or (not idlwave-help-assistant-socket)
|
||
(not (eq (process-status idlwave-help-assistant-socket) 'open)))
|
||
(let* ((help-loc (idlwave-html-help-location))
|
||
(command (idlwave-help-assistant-command))
|
||
(extra-args
|
||
(nconc
|
||
(if (memq system-type '(ms-dos windows-nt))
|
||
`("-profile" ,(expand-file-name "idl.adp" help-loc)))
|
||
(if full-link `("-file" ,full-link))))
|
||
port)
|
||
(if idlwave-help-assistant-socket
|
||
(delete-process idlwave-help-assistant-socket))
|
||
|
||
(setq idlwave-help-assistant-process
|
||
(apply 'start-process
|
||
"IDL_ASSISTANT_PROC" nil command "-server" extra-args))
|
||
|
||
(set-process-filter idlwave-help-assistant-process
|
||
(lambda (proc string)
|
||
(setq port (string-to-number string))))
|
||
(unless (accept-process-output idlwave-help-assistant-process 15)
|
||
(error "Failed binding IDL_ASSISTANT socket"))
|
||
(if (not port)
|
||
(error "Unable to open IDL_ASSISTANT.")
|
||
(set-process-filter idlwave-help-assistant-process nil)
|
||
(setq idlwave-help-assistant-socket
|
||
(open-network-stream "IDL_ASSISTANT_SOCK"
|
||
nil "localhost" port))
|
||
(if (eq (process-status idlwave-help-assistant-socket) 'open)
|
||
(progn
|
||
(process-send-string idlwave-help-assistant-socket
|
||
(concat "setHelpPath " help-loc "\n"))
|
||
t)
|
||
(idlwave-help-assistant-close)
|
||
(error "Cannot communicate with IDL_ASSISTANT"))))))
|
||
|
||
(defun idlwave-help-assistant-raise ()
|
||
(idlwave-help-assistant-start)
|
||
(process-send-string idlwave-help-assistant-socket "raise\n"))
|
||
|
||
(defun idlwave-help-assistant-open-link (&optional link)
|
||
;; Open a link (file name with anchor, no leading path) in the assistant.
|
||
(let ((help-loc (idlwave-html-help-location))
|
||
topic anchor file just-started exists full-link)
|
||
|
||
(if (string-match "\.html" link)
|
||
(setq topic (substring link 0 (match-beginning 0))
|
||
anchor (substring link (match-end 0)))
|
||
(error "Malformed help link."))
|
||
|
||
(setq file (expand-file-name (concat topic ".html") help-loc))
|
||
(if (file-exists-p file)
|
||
(setq exists t)
|
||
(setq file (expand-file-name
|
||
(concat (upcase topic) ".html") help-loc))
|
||
(setq exists (file-exists-p file)))
|
||
|
||
(setq full-link (concat file anchor)
|
||
just-started (idlwave-help-assistant-start (if exists full-link)))
|
||
(if exists
|
||
(progn
|
||
(if (not just-started)
|
||
(process-send-string idlwave-help-assistant-socket
|
||
(concat "openLink " full-link "\n")))
|
||
(process-send-string idlwave-help-assistant-socket
|
||
(concat "searchIndexNoOpen " topic "\n")))
|
||
(process-send-string idlwave-help-assistant-socket
|
||
(concat "searchIndexAndOpen " topic "\n"))))
|
||
(idlwave-help-assistant-raise))
|
||
|
||
(defvar idlwave-help-assistant-help-with-topic-history nil
|
||
"The history of help topics selected with the minibuffer.")
|
||
|
||
(defun idlwave-help-assistant-help-with-topic (&optional topic)
|
||
"Prompt for and provide help with TOPIC."
|
||
(interactive)
|
||
(let (list)
|
||
(unless topic
|
||
(idlwave-routines)
|
||
(setq list (append (mapcar (lambda (x)
|
||
(concat (nth 2 x) (car x)))
|
||
idlwave-system-routines)
|
||
(mapcar (lambda (x)
|
||
(concat "." (car x)))
|
||
idlwave-executive-commands-alist)
|
||
idlwave-system-class-info))
|
||
(setq topic
|
||
(idlwave-completing-read
|
||
"Help Topic: " list
|
||
nil nil nil
|
||
'idlwave-help-assistant-help-with-topic-history)))
|
||
(if (and topic (not (string= topic "")))
|
||
(idlwave-help-assistant-open-link (concat topic ".html")))))
|
||
|
||
(defun idlwave-help-assistant-close ()
|
||
(when (and idlwave-help-assistant-process
|
||
(eq (process-status idlwave-help-assistant-process) 'run))
|
||
(when idlwave-help-assistant-socket
|
||
(process-send-string idlwave-help-assistant-socket "quit\n")
|
||
(delete-process idlwave-help-assistant-socket))
|
||
(stop-process idlwave-help-assistant-process)
|
||
(delete-process idlwave-help-assistant-process)
|
||
(setq idlwave-help-assistant-socket nil
|
||
idlwave-help-assistant-process nil)))
|
||
|
||
|
||
(provide 'idlw-help)
|
||
(provide 'idlwave-help)
|
||
|
||
;; arch-tag: d27b5505-59de-497f-ba3f-f199fd4fb911
|
||
;;; idlw-help.el ends here
|