mirror of https://codeberg.org/cage/tinmop/
347 lines
14 KiB
Common Lisp
347 lines
14 KiB
Common Lisp
;; tinmop module for utility move command in thread window
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;; Copyright © 2022 cage
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;; This program 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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;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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(defpackage :generate-gemlog
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(:use :cl
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:misc
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:fs
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:html-utils
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:gemini-parser
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:text-utils)
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(:local-nicknames (:a :alexandria)))
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(in-package :generate-gemlog)
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(a:define-constant +meta-node-attribute+ "META" :test #'string=)
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(a:define-constant +meta-topic-key+ :topic :test #'eq)
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(a:define-constant +meta-topic-values-delimiters+ "," :test #'string=)
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(a:define-constant +meta-date-key+ :date :test #'eq)
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(a:define-constant +meta-key-value-delimiter+ ": *" :test #'string=)
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(a:define-constant +archive-dir+ "archive" :test #'string=)
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(a:define-constant +archive-gemlog-file+ "gemlog.gmi" :test #'string=)
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(a:define-constant +archive-topic-file+ "topics.gmi" :test #'string=)
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(a:define-constant +post-valid-file-extension+ "gmi$" :test #'string=)
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(defparameter *gemlog-header* (format nil "# Posts~2%## Il gemlog di cage~2%"))
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(defparameter *topic-index-header* (format nil "# Topics archive~2%"))
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(defparameter *uri-prefix-path* "/")
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(defparameter *post-home-backlink* "../index.gmi")
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(defparameter *post-home-backlink-name* "home")
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(defparameter *indices-home-backlink* "./index.gmi")
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(defparameter *indices-home-backlink-name* "home")
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(defun parse-date (timestring)
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(local-time:parse-timestring timestring))
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(defun format-date-to-string (date)
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(with-output-to-string (stream)
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(local-time:format-timestring stream date
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:format '((:year 2) "-" (:month 2) "-" (:day 2)))))
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(defun meta-node-p (node)
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(a:when-let ((attribute (find-attribute :alt node)))
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(string= (trim-blanks (attribute-value attribute))
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"META")))
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(defun extract-meta (parsed)
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(let ((lines (mapcar (lambda (node)
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(trim-blanks (first (children node))))
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(remove-if-not #'meta-node-p parsed))))
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(loop for line in (rest lines)
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when line
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collect
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(let* ((key-value (mapcar #'trim-blanks
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(cl-ppcre:split +meta-key-value-delimiter+ line)))
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(key (a:make-keyword (string-upcase (first key-value))))
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(raw-value (second key-value)))
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(cons key
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(ecase key
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(:topic
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(list (mapcar #'trim-blanks
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(cl-ppcre:split +meta-topic-values-delimiters+
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raw-value))))
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(:date
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(parse-date raw-value))))))))
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(defun extract-non-meta (parsed)
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(remove-if #'meta-node-p parsed))
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(defclass post ()
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((meta
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:initform nil
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:initarg :meta
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:accessor meta)
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(content
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:initform nil
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:initarg :content
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:accessor content)
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(original-file-path
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:initform nil
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:initarg :original-file-path
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:accessor original-file-path)
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(archive-file-path
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:initform nil
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:initarg :archive-file-path
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:accessor archive-file-path)))
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(defmethod print-object ((object post) stream)
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(with-accessors ((meta meta)
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(content content)
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(original-file-path original-file-path)) object
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(print-unreadable-object (object stream :type t)
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(format stream
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"~a ~a ~a~%"
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meta
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content
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original-file-path))))
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(defun notify (control &rest args)
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(if (ui:tui-active-p)
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(ui:info-message (apply #'format nil control args))
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(apply #'format t control args)))
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(defun bulk->posts (capsule-bulk-dir)
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(let* ((original-post-files (remove-if-not (lambda (a)
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(and (fs:regular-file-p a)
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(cl-ppcre:scan +post-valid-file-extension+ a)))
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(fs:collect-children capsule-bulk-dir)))
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(parsed-posts (mapcar (lambda (a)
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(handler-case
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(parse-gemini-file (fs:slurp-file a))
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(error (e)
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(notify
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"Unable to parse ~a: ~a~%"
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a e)
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nil)))
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original-post-files))
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(all-meta (mapcar (lambda (a file)
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(handler-case
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(let ((meta (extract-meta a)))
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(if meta
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meta
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(progn
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(notify "Unable to find metadata for ~a~%"
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file)
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nil)))
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(error (e)
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(notify
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"Unable to parse metadata ~a: ~a~%"
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file e)
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nil)))
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parsed-posts
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original-post-files)))
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(loop for original-post-file in original-post-files
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for parsed-post in parsed-posts
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for meta in all-meta
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when (and parsed-post meta)
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collect
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(make-instance 'post
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:original-file-path original-post-file
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:content (extract-non-meta parsed-post)
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:meta meta))))
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(defun post-topics (post)
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(with-accessors ((meta meta)) post
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(cadr (assoc +meta-topic-key+ meta))))
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(defun collect-topics (posts)
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(let ((results '()))
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(loop for post in posts do
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(with-accessors ((meta meta)) post
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(a:when-let ((topics (post-topics post)))
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(loop for topic in topics do
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(pushnew topic results :test #'string-equal)))))
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results))
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(defun post-date (post)
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(with-accessors ((meta meta)) post
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(cdr (assoc +meta-date-key+ meta))))
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(defun sexp->gmi (parsed stream)
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(loop for node in parsed do
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(let ((line (cond
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((tag= :h1 node)
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(geminize-h1 (first (children node))))
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((tag= :h2 node)
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(geminize-h2 (first (children node))))
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((tag= :h3 node)
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(geminize-h3 (first (children node))))
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((tag= :li node)
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(geminize-list (first (children node))))
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((tag= :quote node)
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(geminize-quote (first (children node))))
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((tag= :a node)
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(geminize-link (strcat " "
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(attribute-value (find-attribute :href node))
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" "
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(first (children node)))))
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((or (tag= :pre node)
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(tag= :pre-end node))
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"```")
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((null (first (children node)))
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(format nil "~%"))
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(t
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(first (children node))))))
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(format stream "~a~%" line))))
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(defun create-archive (bulk-posts-dir output-directory)
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(let* ((posts (sort (bulk->posts bulk-posts-dir)
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(lambda (a b)
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(local-time:timestamp> (post-date a)
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(post-date b)))))
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(all-topics (collect-topics posts))
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(archive-dir-path (strcat output-directory "/" +archive-dir+)))
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(fs:make-directory archive-dir-path)
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(loop for post in posts do
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(let* ((file-name (fs:strip-dirs-from-path (original-file-path post)))
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(file-path (fs:cat-parent-dir archive-dir-path file-name)))
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(setf (archive-file-path post) file-path)
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(handler-case
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(with-open-file (stream file-path
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:direction :output
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:if-does-not-exist :create
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:if-exists :supersede)
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(sexp->gmi (content post) stream)
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(write-sequence (geminize-link (strcat *post-home-backlink*
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" "
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*post-home-backlink-name*))
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stream)
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(notify "Processed ~a~%" (original-file-path post)))
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(error (e)
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(format *error-output*
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"skipping ~a, reasons: ~a.~%"
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file-path
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e)))))
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(values posts all-topics)))
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(defun write-links (posts stream)
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(loop for post in posts do
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(let* ((filename (strip-dirs-from-path (archive-file-path post)))
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(relative-archive-path (strcat *uri-prefix-path*
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(cat-parent-dir +archive-dir+
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(percent-encode filename))))
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(link-text (strcat (format-date-to-string (post-date post))
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" "
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(cl-ppcre:regex-replace-all "-"
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filename
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" ")))
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(link (geminize-link (format nil
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" ~a ~a~%"
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relative-archive-path
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link-text))))
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(write-sequence link stream))))
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(defun make-gemlog-index (all-posts output-directory)
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(let ((gemlog-index-path (cat-parent-dir output-directory +archive-gemlog-file+)))
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(with-open-file (gemlog-stream
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gemlog-index-path
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:direction :output
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:if-does-not-exist :create
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:if-exists :supersede)
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(format gemlog-stream *gemlog-header*)
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(write-links all-posts gemlog-stream)
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(format gemlog-stream "~%")
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(write-sequence (geminize-link (strcat *indices-home-backlink*
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" "
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*indices-home-backlink-name*))
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gemlog-stream))))
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(defun make-topic-index (all-posts output-directory all-topics)
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(let ((topics-index-path (cat-parent-dir output-directory +archive-topic-file+)))
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(with-open-file (stream
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topics-index-path
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:direction :output
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:if-does-not-exist :create
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:if-exists :supersede)
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(write-sequence *topic-index-header* stream)
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(loop for topic in all-topics do
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(format stream "~a~2%" (geminize-h2 topic))
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(let ((in-topic-posts (remove-if-not (lambda (post)
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(let ((post-topics (post-topics post)))
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(find topic
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post-topics
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:test #'string-equal)))
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all-posts)))
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(write-links in-topic-posts stream)
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(format stream "~%")))
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(write-sequence (geminize-link (strcat *indices-home-backlink*
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" "
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*indices-home-backlink-name*))
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stream))))
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(defun generate-gemlog (bulk-posts-dir output-directory)
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(multiple-value-bind (all-posts all-topics)
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(create-archive bulk-posts-dir output-directory)
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(make-topic-index all-posts output-directory all-topics)
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(make-gemlog-index all-posts output-directory)))
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(a:define-constant +bulk-dir-prompt+ "Original posts directory? " :test #'string=)
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(a:define-constant +output-dir-prompt+ "Output directory? " :test #'string=)
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(a:define-constant +root-dir-prompt+ "Type the root of the path for the gemlog (e.g: \"gemini://foo.net/cage/\" → \"/cage/\") " :test #'string=)
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(defun generate-on-tui ()
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(let ((bulk-posts-dir nil)
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(output-directory nil))
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(format t "Starting processing~%")
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(labels ((on-bulk-complete (input-text)
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(ui::with-enqueued-process ()
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(setf bulk-posts-dir input-text)
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(ui:ask-string-input #'on-out-complete
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:prompt +output-dir-prompt+
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:complete-fn #'complete:directory-complete)))
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(on-out-complete (out-directory)
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(ui::with-enqueued-process ()
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(setf output-directory out-directory)
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(ui:ask-string-input #'on-root-completed
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:prompt +root-dir-prompt+)))
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(on-root-completed (root)
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(ui::with-enqueued-process ()
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(setf *uri-prefix-path* root)
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(generate-gemlog bulk-posts-dir output-directory)
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(notify "Gemlog generated~%")
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(ui:open-gemini-address output-directory))))
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(ui:ask-string-input #'on-bulk-complete
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:prompt +bulk-dir-prompt+
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:complete-fn #'complete:directory-complete))))
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(defun ask-input-cli (prompt)
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(notify "~a~%" prompt)
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(finish-output)
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(read-line))
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(if (ui:tui-active-p)
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(generate-on-tui)
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(let* ((bulk-posts-dir (ask-input-cli +bulk-dir-prompt+))
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(output-directory (ask-input-cli +output-dir-prompt+)))
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(setf *uri-prefix-path* (ask-input-cli +root-dir-prompt+))
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(generate-gemlog bulk-posts-dir output-directory)))
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