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* lisp/ol.el (org-store-link): Refactor org-id links to use standard `org-store-link-functions'. (org-link-search): Create new headings at appropriate level. (org-link-precise-link-target): New function extracting logic to identify a precise link target, e.g. a heading, named object, or text search. (org-link-try-link-store-functions): Extract logic to call external link store functions. Pass them a new `interactive?' argument. * lisp/ol-bbdb.el (org-bbdb-store-link): * lisp/ol-bibtex.el (org-bibtex-store-link): * lisp/ol-docview.el (org-docview-store-link): * lisp/ol-eshell.el (org-eshell-store-link): * lisp/ol-eww.el (org-eww-store-link): * lisp/ol-gnus.el (org-gnus-store-link): * lisp/ol-info.el (org-info-store-link): * lisp/ol-irc.el (org-irc-store-link): * lisp/ol-man.el (org-man-store-link): * lisp/ol-mhe.el (org-mhe-store-link): * lisp/ol-rmail.el (org-rmail-store-link): Accept optional arg. * lisp/org-id.el (org-id-link-consider-parent-id): New option to allow a parent heading with an id to be considered as a link target. (org-id-link-use-context): New option to add context to org-id links. (org-id-get): Add optional `inherit' argument which considers parents' IDs if the current entry does not have one. (org-id-store-link): Consider IDs of parent headings as link targets when current heading has no ID and `org-id-link-consider-parent-id' is set. Add a search string to the link when enabled. (org-id-store-link-maybe): Function set as :store option for custom id link property. Move logic from `org-store-link' here to determine when an org-id link should be stored using `org-id-store-link'. (org-id-open): Recognise search strings after "::" in org-id links. * lisp/org-lint.el: Add checker for "::" in ID properties. * testing/lisp/test-ol.el: Add tests for `org-link-precise-link-target' and `org-id-store-link' functions, testing new options. * doc/org-manual.org: Update documentation about links. * etc/ORG-NEWS: Document changes and new options. These feature allows for more precise links when using org-id to link to org headings, without requiring every single headline to have an id. Link: https://list.orgmode.org/118435e8-0b20-46fd-af6a-88de8e19fac6@app.fastmail.com/
109 lines
3.7 KiB
EmacsLisp
109 lines
3.7 KiB
EmacsLisp
;;; ol-docview.el --- Links to Docview mode buffers -*- lexical-binding: t; -*-
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;; Copyright (C) 2009-2024 Free Software Foundation, Inc.
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;; Author: Jan Böcker <jan.boecker at jboecker dot de>
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;; Keywords: outlines, hypermedia, calendar, wp
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;; URL: https://orgmode.org
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;;
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;; This file is part of GNU Emacs.
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;;
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;; GNU Emacs 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 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs 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. If not, see <https://www.gnu.org/licenses/>.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;;; Commentary:
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;; This file implements links to open files in doc-view-mode.
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;; Org mode loads this module by default - if this is not what you want,
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;; configure the variable `org-modules'.
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;; The links take the form
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;;
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;; docview:<file path>::<page number>
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;;
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;; for example: [[docview:~/.elisp/org/doc/org.pdf::1][Org-Mode Manual]]
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;;
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;; Autocompletion for inserting links is supported; you will be
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;; prompted for a file and a page number.
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;;
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;; If you use org-store-link in a doc-view mode buffer, the stored
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;; link will point to the current page.
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;;; Code:
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(require 'org-macs)
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(org-assert-version)
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(require 'doc-view)
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(require 'ol)
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(declare-function doc-view-goto-page "doc-view" (page))
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(declare-function image-mode-window-get "image-mode" (prop &optional winprops))
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(declare-function org-open-file "org" (path &optional in-emacs line search))
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(org-link-set-parameters "docview"
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:follow #'org-docview-open
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:export #'org-docview-export
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:store #'org-docview-store-link)
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(defun org-docview-export (link description backend _info)
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"Export a docview LINK with DESCRIPTION for BACKEND."
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(let ((path (if (string-match "\\(.+\\)::.+" link) (match-string 1 link)
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link))
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(desc (or description link)))
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(when (stringp path)
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(setq path (expand-file-name path))
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(cond
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((eq backend 'html) (format "<a href=\"%s\">%s</a>" path desc))
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((eq backend 'latex) (format "\\href{%s}{%s}" path desc))
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((eq backend 'ascii) (format "[%s] (<%s>)" desc path))
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(t path)))))
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(defun org-docview-open (link _)
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"Open docview: LINK."
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(string-match "\\(.*?\\)\\(?:::\\([0-9]+\\)\\)?$" link)
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(let ((path (match-string 1 link))
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(page (and (match-beginning 2)
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(string-to-number (match-string 2 link)))))
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;; Let Org mode open the file (in-emacs = 1) to ensure
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;; org-link-frame-setup is respected.
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(if (file-exists-p path)
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(org-open-file path 1)
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(error "No such file: %s" path))
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(when page (doc-view-goto-page page))))
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(defun org-docview-store-link (&optional _interactive?)
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"Store a link to a docview buffer."
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(when (eq major-mode 'doc-view-mode)
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;; This buffer is in doc-view-mode
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(let* ((path buffer-file-name)
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(page (image-mode-window-get 'page))
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(link (concat "docview:" path "::" (number-to-string page))))
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(org-link-store-props
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:type "docview"
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:link link
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:description path))))
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(defun org-docview-complete-link ()
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"Use the existing file name completion for file.
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Links to get the file name, then ask the user for the page number
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and append it."
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(concat (replace-regexp-in-string "^file:" "docview:" (org-link-complete-file))
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"::"
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(read-from-minibuffer "Page:" "1")))
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(provide 'ol-docview)
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;;; ol-docview.el ends here
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