;;; ox-latex-emoji.el --- Generated package (no.83) from my config -*- lexical-binding: t; -*- ;; ;; Copyright (C) 2024 TEC ;; ;; Author: TEC <https://code.tecosaur.net/tec> ;; Maintainer: TEC <contact@tecosaur.net> ;; Created: April 20, 2024 ;; Modified: April 20, 2024 ;; Version: 2024.04.20 ;; Homepage: https://code.tecosaur.net/tec/emacs-config ;; Package-Requires: ((emacs "29.1")) ;; ;; This file is not part of GNU Emacs. ;; ;;; Commentary: ;; ;; Generated package (no.83) from my config. ;; ;; During generation, dependency on other aspects of my configuration and ;; packages is inferred via (regexp-based) static analysis. While this seems ;; to do a good job, this method is imperfect. This code likely depends on ;; utilities provided by Doom, and if you try to run it in isolation you may ;; discover the code makes more assumptions. ;; ;; That said, I've found pretty good results so far. ;; ;;; Code: (require 'ox-latex) (defvar org-latex-emoji--rx (let (emojis) (map-char-table (lambda (char set) (when (eq set 'emoji) (push (copy-tree char) emojis))) char-script-table) (rx-to-string `(any ,@emojis))) "A regexp to find all emoji-script characters.") (defconst org-latex-emoji-base-dir (expand-file-name "emojis/" doom-cache-dir) "Directory where emojis should be saved and look for.") (defvar org-latex-emoji-sets '(("twemoji" :url "https://github.com/twitter/twemoji/archive/refs/tags/v14.0.2.zip" :folder "twemoji-14.0.2/assets/svg" :height "1.8ex" :offset "-0.3ex") ("twemoji-bw" :url "https://github.com/youdly/twemoji-color-font/archive/refs/heads/v11-release.zip" :folder "twemoji-color-font-11-release/assets/builds/svg-bw" :height "1.8ex" :offset "-0.3ex") ("openmoji" :url "https://github.com/hfg-gmuend/openmoji/releases/latest/download/openmoji-svg-color.zip" :height "2.2ex" :offset "-0.45ex") ("openmoji-bw" :url "https://github.com/hfg-gmuend/openmoji/releases/latest/download/openmoji-svg-black.zip" :height "2.2ex" :offset "-0.45ex") ("emojione" :url "https://github.com/joypixels/emojione/archive/refs/tags/v2.2.7.zip" :folder "emojione-2.2.7/assets/svg") ; Warning, poor coverage ("noto" :url "https://github.com/googlefonts/noto-emoji/archive/refs/tags/v2.038.zip" :folder "noto-emoji-2.038/svg" :file-regexp "^emoji_u\\([0-9a-f_]+\\)" :height "2.0ex" :offset "-0.3ex")) "An alist of plistst of emoji sets. Specified with the minimal form: (\"SET-NAME\" :url \"URL\") The following optional parameters are supported: :folder (defaults to \"\") The folder within the archive where the emojis exist. :file-regexp (defaults to nil) Pattern with the emoji code point as the first capture group. :height (defaults to \"1.8ex\") Height of the emojis to be used. :offset (defaults to \"-0.3ex\") Baseline offset of the emojis.") (defconst org-latex-emoji-keyword "LATEX_EMOJI_SET" "Keyword used to set the emoji set from `org-latex-emoji-sets'.") (defvar org-latex-emoji-preamble "\\usepackage{accsupp} % The transparent package is also needed, but will be loaded later. \\newsavebox\\emojibox \\NewDocumentCommand\\DeclareEmoji{m m}{% UTF-8 codepoint, UTF-16 codepoint \\DeclareUnicodeCharacter{#1}{% \\sbox\\emojibox{\\raisebox{OFFSET}{% \\includegraphics[height=HEIGHT]{EMOJI-FOLDER/#1}}}% \\usebox\\emojibox \\llap{% \\resizebox{\\wd\\emojibox}{\\height}{% \\BeginAccSupp{method=hex,unicode,ActualText=#2}% \\texttransparent{0}{X}% \\EndAccSupp{}}}}}" "LaTeX preamble snippet that will allow for emojis to be declared. Contains the string \"EMOJI-FOLDER\" which should be replaced with the path to the emoji folder.") (defun org-latex-emoji-utf16 (char) "Return the pair of UTF-16 surrogates that represent CHAR." (list (+ #xD7C0 (ash char -10)) (+ #xDC00 (logand char #x03FF)))) (defun org-latex-emoji-declaration (char) "Construct the LaTeX command declaring CHAR as an emoji." (format "\\DeclareEmoji{%X}{%s} %% %s" char (if (< char #xFFFF) (format "%X" char) (apply #'format "%X%X" (org-latex-emoji-utf16 char))) (capitalize (get-char-code-property char 'name)))) (defun org-latex-emoji-fill-preamble (emoji-folder &optional height offset svg-p) "Fill in `org-latex-emoji-preamble' with EMOJI-FOLDER, HEIGHT, and OFFSET. If SVG-P is set \"includegraphics\" will be replaced with \"includesvg\"." (let* (case-fold-search (filled-preamble (replace-regexp-in-string "HEIGHT" (or height "1.8ex") (replace-regexp-in-string "OFFSET" (or offset "-0.3ex") (replace-regexp-in-string "EMOJI-FOLDER" (directory-file-name (if (getenv "HOME") (replace-regexp-in-string (regexp-quote (getenv "HOME")) "\\string~" emoji-folder t t) emoji-folder)) org-latex-emoji-preamble t t) t t) t t))) (if svg-p (replace-regexp-in-string "includegraphics" "includesvg" filled-preamble t t) filled-preamble))) (defun org-latex-emoji-setup (&optional info) "Construct a preamble snippet to set up emojis based on INFO." (let* ((emoji-set (or (org-element-map (plist-get info :parse-tree) 'keyword (lambda (keyword) (and (string= (org-element-property :key keyword) org-latex-emoji-keyword) (org-element-property :value keyword))) info t) (caar org-latex-emoji-sets))) (emoji-spec (cdr (assoc emoji-set org-latex-emoji-sets))) (emoji-folder (expand-file-name emoji-set org-latex-emoji-base-dir)) (emoji-svg-only (and (file-exists-p emoji-folder) (not (cl-some (lambda (path) (not (string= (file-name-extension path) "svg"))) (directory-files emoji-folder nil "\\....$")))))) (cond ((not emoji-spec) (error "Emoji set `%s' is unknown. Try one of: %s" emoji-set (string-join (mapcar #'car org-latex-emoji-sets) ", "))) ((not (file-exists-p emoji-folder)) (if (and (not noninteractive) (yes-or-no-p (format "Emoji set `%s' is not installed, would you like to install it?" emoji-set))) (org-latex-emoji-install emoji-set (or (executable-find "cairosvg") (executable-find "inkscape"))) (error "Emoji set `%s' is not installed" emoji-set)))) (org-latex-emoji-fill-preamble emoji-folder (plist-get emoji-spec :height) (plist-get emoji-spec :offset) emoji-svg-only))) (org-export-update-features 'latex (emoji-setup ; The precompilable bit :condition (save-excursion (goto-char (point-min)) (re-search-forward org-latex-emoji--rx nil t)) :requires (image pkg-transparent) :snippet org-latex-emoji-setup :order 3) (pkg-transparent ; Part of emoji setup, but non-precompilable. :snippet "\\usepackage{transparent}" :order 84) (emoji-declarations :condition t :when emoji-setup :snippet (mapconcat #'org-latex-emoji-declaration (let (unicode-cars) (save-excursion (goto-char (point-min)) (while (re-search-forward org-latex-emoji--rx nil t) (push (aref (match-string 0) 0) unicode-cars))) (cl-delete-duplicates unicode-cars)) "\n") :order 85)) (org-export-update-features 'latex (emoji-lualatex-hack :condition t :when (emoji julia-code) ; LuaLaTeX is used with julia-code. :snippet "\\usepackage{newunicodechar} \\newcommand{\\DeclareUnicodeCharacter}[2]{% \\begingroup\\lccode`|=\\string\"#1\\relax \\lowercase{\\endgroup\\newunicodechar{|}}{#2}}" :before emoji)) (defun org-latex-emoji-install (set &optional convert) "Dowload, convert, and install emojis for use with LaTeX." (interactive (list (completing-read "Emoji set to install: " (mapcar (lambda (set-spec) (if (file-exists-p (expand-file-name (car set-spec) org-latex-emoji-base-dir)) (propertize (car set-spec) 'face 'font-lock-doc-face) (car set-spec))) org-latex-emoji-sets) nil t) (if (or (executable-find "cairosvg") (executable-find "inkscape")) (yes-or-no-p "Would you like to create .pdf forms of the Emojis (strongly recommended)?") (message "Install `cairosvg' (recommended) or `inkscape' to convert to PDF forms") nil))) (let ((emoji-folder (expand-file-name set org-latex-emoji-base-dir))) (when (or (not (file-exists-p emoji-folder)) (and (not noninteractive) (yes-or-no-p "Emoji folder already present, would you like to re-download?") (progn (delete-directory emoji-folder) t))) (let* ((spec (cdr (assoc set org-latex-emoji-sets))) (dir (org-latex-emoji-install--download set (plist-get spec :url))) (svg-dir (expand-file-name (or (plist-get spec :folder) "") dir))) (org-latex-emoji-install--install set svg-dir (plist-get spec :file-regexp)))) (when convert (org-latex-emoji-install--convert (file-name-as-directory emoji-folder)))) (message "Emojis set `%s' installed." set)) (defun org-latex-emoji-install--download (name url) "Download the emoji archive URL for the set NAME." (let* ((dest-folder (make-temp-file (format "%s-" name) t))) (message "Downloading %s..." name) (let ((default-directory dest-folder)) (call-process "curl" nil nil nil "-sL" url "--output" "emojis.zip") (message "Unzipping") (call-process "unzip" nil nil nil "emojis.zip") dest-folder))) (defun org-latex-emoji-install--install (name dir &optional filename-regexp) "Install the emoji files in DIR to the NAME set folder. If a FILENAME-REGEXP, only files matching this regexp will be moved, and they will be renamed to the first capture group of the regexp." (message "Installing %s emojis into emoji directory" name) (let ((images (append (directory-files dir t ".*.svg") (directory-files dir t ".*.pdf"))) (emoji-dir (file-name-as-directory (expand-file-name name org-latex-emoji-base-dir)))) (unless (file-exists-p emoji-dir) (make-directory emoji-dir t)) (mapc (lambda (image) (if filename-regexp (when (string-match filename-regexp (file-name-nondirectory image)) (rename-file image (expand-file-name (file-name-with-extension (upcase (match-string 1 (file-name-nondirectory image))) (file-name-extension image)) emoji-dir) t)) (rename-file image (expand-file-name (file-name-with-extension (upcase (file-name-nondirectory image)) (file-name-extension image)) emoji-dir) t))) images) (message "%d emojis installed" (length images)))) (defun org-latex-emoji-install--convert (dir) "Convert all .svg files in DIR to .pdf forms. Uses cairosvg if possible, falling back to inkscape." (let ((default-directory dir)) (if (executable-find "cairosvg") ; cairo's PDFs are ~10% smaller (let* ((images (directory-files dir nil ".*.svg")) (num-images (length images)) (index 0) (max-threads (1- (string-to-number (shell-command-to-string "nproc")))) (threads 0)) (while (< index num-images) (setf threads (1+ threads)) (let (message-log-max) (message "Converting emoji %d/%d (%s)" (1+ index) num-images (nth index images))) (make-process :name "cairosvg" :command (list "cairosvg" (nth index images) "-o" (concat (file-name-sans-extension (nth index images)) ".pdf")) :sentinel (lambda (proc msg) (when (memq (process-status proc) '(exit signal)) (setf threads (1- threads))))) (setq index (1+ index)) (while (> threads max-threads) (sleep-for 0.01))) (while (> threads 0) (sleep-for 0.01))) (message "Cairosvg not found. Proceeding with inkscape as a fallback.") (shell-command "inkscape --batch-process --export-type='pdf' *.svg")) (message "Finished conversion!"))) (provide 'ox-latex-emoji) ;;; ox-latex-emoji.el ends here