149 lines
5.4 KiB
EmacsLisp
149 lines
5.4 KiB
EmacsLisp
(defun vulpea-project-p ()
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"Return non-nil if current buffer has any todo entry.
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TODO entries marked as done are ignored, meaning the this
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function returns nil if current buffer contains only completed
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tasks."
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(seq-find ; (3)
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(lambda (type)
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(eq type 'todo))
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(org-element-map ; (2)
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(org-element-parse-buffer 'headline) ; (1)
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'headline
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(lambda (h)
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(org-element-property :todo-type h)))))
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(defun vulpea-project-update-tag ()
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"Update PROJECT tag in the current buffer."
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(when (and (not (active-minibuffer-window))
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(vulpea-buffer-p))
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(save-excursion
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(goto-char (point-min))
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(let* ((tags (vulpea-buffer-tags-get))
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(original-tags tags))
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(if (vulpea-project-p)
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(setq tags (cons "project" tags))
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(setq tags (remove "project" tags)))
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;; cleanup duplicates
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(setq tags (seq-uniq tags))
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;; update tags if changed
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(when (or (seq-difference tags original-tags)
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(seq-difference original-tags tags))
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(apply #'vulpea-buffer-tags-set tags))))))
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(defun vulpea-buffer-p ()
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"Return non-nil if the currently visited buffer is a note."
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(and buffer-file-name
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(string-prefix-p
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(expand-file-name (file-name-as-directory org-roam-directory))
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(file-name-directory buffer-file-name))))
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(defun vulpea-project-files ()
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"Return a list of note files containing 'project' tag." ;
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(seq-uniq
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(seq-map
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#'car
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(org-roam-db-query
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[:select [nodes:file]
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:from tags
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:left-join nodes
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:on (= tags:node-id nodes:id)
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:where (like tag (quote "%\"project\"%"))]))))
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(defun vulpea-agenda-files-update (&rest _)
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"Update the value of `org-agenda-files'."
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(setq org-agenda-files (vulpea-project-files)))
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(add-hook 'find-file-hook #'vulpea-project-update-tag)
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(add-hook 'before-save-hook #'vulpea-project-update-tag)
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(advice-add 'org-agenda :before #'vulpea-agenda-files-update)
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(advice-add 'org-todo-list :before #'vulpea-agenda-files-update)
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;; functions borrowed from `vulpea' library
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;; https://github.com/d12frosted/vulpea/blob/6a735c34f1f64e1f70da77989e9ce8da7864e5ff/vulpea-buffer.el
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(defun vulpea-buffer-tags-get ()
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"Return filetags value in current buffer."
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(vulpea-buffer-prop-get-list "filetags" "[ :]"))
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(defun vulpea-buffer-tags-set (&rest tags)
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"Set TAGS in current buffer.
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If filetags value is already set, replace it."
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(if tags
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(vulpea-buffer-prop-set
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"filetags" (concat ":" (string-join tags ":") ":"))
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(vulpea-buffer-prop-remove "filetags")))
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(defun vulpea-buffer-tags-add (tag)
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"Add a TAG to filetags in current buffer."
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(let* ((tags (vulpea-buffer-tags-get))
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(tags (append tags (list tag))))
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(apply #'vulpea-buffer-tags-set tags)))
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(defun vulpea-buffer-tags-remove (tag)
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"Remove a TAG from filetags in current buffer."
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(let* ((tags (vulpea-buffer-tags-get))
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(tags (delete tag tags)))
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(apply #'vulpea-buffer-tags-set tags)))
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(defun vulpea-buffer-prop-set (name value)
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"Set a file property called NAME to VALUE in buffer file.
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If the property is already set, replace its value."
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(setq name (downcase name))
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(org-with-point-at 1
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(let ((case-fold-search t))
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(if (re-search-forward (concat "^#\\+" name ":\\(.*\\)")
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(point-max) t)
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(replace-match (concat "#+" name ": " value) 'fixedcase)
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(while (and (not (eobp))
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(looking-at "^[#:]"))
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(if (save-excursion (end-of-line) (eobp))
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(progn
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(end-of-line)
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(insert "\n"))
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(forward-line)
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(beginning-of-line)))
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(insert "#+" name ": " value "\n")))))
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(defun vulpea-buffer-prop-set-list (name values &optional separators)
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"Set a file property called NAME to VALUES in current buffer.
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VALUES are quoted and combined into single string using
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`combine-and-quote-strings'.
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If SEPARATORS is non-nil, it should be a regular expression
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matching text that separates, but is not part of, the substrings.
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If nil it defaults to `split-string-default-separators', normally
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\"[ \f\t\n\r\v]+\", and OMIT-NULLS is forced to t.
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If the property is already set, replace its value."
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(vulpea-buffer-prop-set
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name (combine-and-quote-strings values separators)))
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(defun vulpea-buffer-prop-get (name)
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"Get a buffer property called NAME as a string."
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(org-with-point-at 1
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(when (re-search-forward (concat "^#\\+" name ": \\(.*\\)")
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(point-max) t)
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(buffer-substring-no-properties
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(match-beginning 1)
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(match-end 1)))))
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(defun vulpea-buffer-prop-get-list (name &optional separators)
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"Get a buffer property NAME as a list using SEPARATORS.
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If SEPARATORS is non-nil, it should be a regular expression
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matching text that separates, but is not part of, the substrings.
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If nil it defaults to `split-string-default-separators', normally
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\"[ \f\t\n\r\v]+\", and OMIT-NULLS is forced to t."
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(let ((value (vulpea-buffer-prop-get name)))
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(when (and value (not (string-empty-p value)))
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(split-string-and-unquote value separators))))
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(defun vulpea-buffer-prop-remove (name)
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"Remove a buffer property called NAME."
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(org-with-point-at 1
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(when (re-search-forward (concat "\\(^#\\+" name ":.*\n?\\)")
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(point-max) t)
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(replace-match ""))))
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