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ego-template.el
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ego-template.el
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;;; ego-template.el --- templating system based on mustache, required by ego
;; Copyright (C) 2015 Feng Shu, Kuangdash
;; 2012, 2013, 2014, 2015 Kelvin Hu
;; Author: Kelvin Hu <ini DOT kelvin AT gmail DOT com>
;; Feng Shu <tumashu AT 163.com>
;; Kuangdash <kuangdash AT 163.com>
;; Keywords: org-mode, convenience, beautify
;; Homepage: https://github.com/emacs-china/EGO
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; templating system based on mustache.el, to replace `format-spec'.
;;; Code:
(require 'ox)
;; (require 'mustache)
(autoload 'mustache-render "mustache")
(require 'ego-util)
(require 'ego-config)
(require 'ego-git)
(defun ego--get-template-file (template-file-name)
"Get path of template file which name is `template-file-name'."
(car (remove nil (mapcar
(lambda (dir)
(let ((file (concat (file-name-as-directory dir)
template-file-name)))
(when (file-exists-p file)
file)))
(ego--get-theme-dirs nil nil 'templates)))))
(defun ego--get-title ()
"Get the title of org file."
(or (ego--read-org-option "TITLE")
(file-name-sans-extension (buffer-name))))
(defun ego--get-category (&optional org-file)
"Get org file category presented by ORG-FILE, return all categories if
ORG-FILE is nil. "
(let ((func (ego--get-config-option :retrieve-category-function)))
(if (functionp func)
(funcall func org-file)
(funcall 'ego--get-file-category org-file))))
(defun ego--get-cache-item (key)
"Get the item associated with KEY in `ego--item-cache', if `ego--item-cache' is
nil or there is no item associated with KEY in it, return nil."
(and ego--item-cache
(plist-get ego--item-cache key)))
(defun ego--update-cache-item (key value)
"Update the item associated with KEY in `ego--item-cache', if `ego--item-cache' is
nil, initialize it."
(if ego--item-cache
(plist-put ego--item-cache key value)
(setq ego--item-cache `(,key ,value)))
value)
(defmacro ego--get-cache-create (key &rest body)
"Firstly get item from `ego--item-cache' with KEY, if item not found, evaluate
BODY and push the result into cache and return it."
`(or (ego--get-cache-item ,key)
(ego--update-cache-item ,key (funcall (lambda () ,@body)))))
(defun ego--render-header (&optional param-table)
"Render the header on each page. PARAM-TABLE is the hash table from mustache
to render the template. If it is not set or nil, this function will try to build
a hash table accordint to current buffer."
(mustache-render
(ego--get-cache-create
:header-template
(message "EGO: Read header.mustache from file")
(ego--file-to-string (ego--get-template-file "header.mustache")))
(or param-table
(ht ("page-title" (concat (funcall (ego--get-config-option :get-title-function))
" - " (ego--get-config-option :site-main-title)))
("author" (or (ego--read-org-option "AUTHOR")
user-full-name "Unknown Author"))
("description" (ego--read-org-option "DESCRIPTION"))
("keywords" (ego--read-org-option "TAGS"))))))
(defun ego-get-category-show-list ()
(or ego--category-show-list
(setq ego--category-show-list
(sort (cl-remove-if
(lambda (cat)
(or (string= cat "index")
(string= cat "about")
(not (plist-get (cdr (or (assoc cat ego--category-config-alist)
(ego--get-category-setting (ego--get-config-option :default-category))))
:category-index))))
(ego--get-category nil))
'string-lessp))))
(defun ego--render-navigation-bar (&optional param-table)
"Render the navigation bar on each page. it will be read firstly from
`ego--item-cache', if there is no cached content, it will be rendered
and pushed into cache from template. PARAM-TABLE is the hash table for mustache
to render the template. If it is not set or nil, this function will try to
render from a default hash table."
(let ((site-domain (ego--get-site-domain))
(cat-real nil))
(ego--get-cache-create
:nav-bar-html
(message "EGO: Render navigation bar from template")
(mustache-render
(ego--get-cache-create
:nav-bar-template
(message "EGO: Read nav.mustache from file")
(ego--file-to-string (ego--get-template-file "nav.mustache")))
(or param-table
(ht ("site-main-title" (ego--get-config-option :site-main-title))
("site-sub-title" (ego--get-config-option :site-sub-title))
("nav-categories"
(mapcar
(lambda (cat)
(ht ("category-uri"
(concat "/" (ego--encode-string-to-url cat) "/"))
("category-name" (capitalize cat))))
(ego-get-category-show-list)))
("nav-summary"
(mapcar
(lambda (cat)
(if (equal cat (caar (-filter (lambda (element) (equal :tags (cadr element)))
(ego--get-config-option :summary))))
(setq cat-real "tags")
(setq cat-real cat))
(ht ("summary-item-uri"
(concat "/" (ego--encode-string-to-url cat-real) "/"))
("summary-item-name" (capitalize cat))))
(mapcar #'car (ego--get-config-option :summary))))
("nav-source-browse"
(let ((list (ego--get-config-option :source-browse-url)))
(when list
(ht ("source-browse-name" (car list))
("source-browse-uri" (car (cdr list)))))))
("nav-about"
(let ((list (ego--get-config-option :about)))
(when list
(ht ("about-name" (car list))
("about-uri" (car (cdr list)))))))
("nav-rss"
(let ((list (ego--get-config-option :rss)))
(when list
(ht ("rss-name" (car list))
("rss-uri" (car (cdr list)))))))
("avatar" (ego--get-config-option :personal-avatar))
("site-domain" (if (string-match
"\\`https?://\\(.*[a-zA-Z]\\)/?\\'"
site-domain)
(match-string 1 site-domain)
site-domain))))))))
(defun ego--render-content (&optional template param-table)
"Render the content on each page. TEMPLATE is the template name for rendering,
if it is not set of nil, will use default post.mustache instead. PARAM-TABLE is
similar to `ego--render-header'."
(mustache-render
(ego--get-cache-create
(if template
(intern (replace-regexp-in-string "\\.mustache$" "-template" template))
:post-template)
(message (concat "Read " (or template "post.mustache") " from file"))
(ego--file-to-string (ego--get-template-file
(or template "post.mustache"))))
(or param-table
(ht ("title" (funcall (ego--get-config-option :get-title-function)))
("content" (cl-flet ((org-html-fontify-code
(code lang)
(when code (org-html-encode-plain-text code))))
(let ((org-export-function (ego--get-config-option :org-export-function)))
(when (functionp org-export-function)
(funcall org-export-function)))))))))
(defun ego--default-org-export ()
"A function with can export org file to html."
(org-export-as 'html nil nil t nil))
(defun ego--render-footer (&optional param-table)
"Render the footer on each page. PARAM-TABLE is similar to
`ego--render-header'."
(mustache-render
(ego--get-cache-create
:footer-template
(message "EGO: Read footer.mustache from file")
(ego--file-to-string (ego--get-template-file "footer.mustache")))
(or param-table
(let* ((filename (buffer-file-name))
(title (funcall (ego--get-config-option :get-title-function)))
(default-category (ego--get-config-option :default-category))
(date (ego--fix-timestamp-string
(or (ego--read-org-option "DATE")
(format-time-string "%Y-%m-%d"))))
(tags (ego--read-org-option "TAGS"))
(tags (if tags
(mapcar
(lambda (tag-name)
(ht ("link" (ego--generate-summary-uri "tags" tag-name))
("name" tag-name)))
(delete "" (mapcar 'string-trim (split-string tags "[:,]+" t))))))
(category (ego--get-category filename))
(config (cdr (or (assoc category ego--category-config-alist)
(ego--get-category-setting default-category))))
(uri (funcall (plist-get config :uri-generator)
(plist-get config :uri-template) date title)))
(ht ("show-meta" (plist-get config :show-meta))
("show-comment" (plist-get config :show-comment))
("date" date)
("mod-date" (if (not filename)
(format-time-string "%Y-%m-%d")
(or (ego-git-last-change-date
(ego--get-repository-directory)
filename)
(format-time-string
"%Y-%m-%d"
(nth 5 (file-attributes filename))))))
("tags" tags)
("tag-links" (if (not tags) "N/A"
(mapconcat
(lambda (tag)
(mustache-render
"<a href=\"{{link}}\">{{name}}</a>" tag))
tags " : ")))
("author" (or (ego--read-org-option "AUTHOR")
user-full-name
"Unknown Author"))
("disqus-id" uri)
("disqus-url" (ego--get-full-url uri))
("disqus-comment" (ego--get-config-option :personal-disqus-shortname))
("disqus-shortname" (ego--get-config-option :personal-disqus-shortname))
("duoshuo-comment" (ego--get-config-option :personal-duoshuo-shortname))
("duoshuo-shortname" (ego--get-config-option :personal-duoshuo-shortname))
("google-analytics" (ego--get-config-option :personal-google-analytics-id))
("google-analytics-id" (ego--get-config-option :personal-google-analytics-id))
("creator-info" (ego--get-html-creator-string))
("email" (ego--confound-email-address (or (ego--read-org-option "EMAIL")
user-mail-address
"Unknown Email"))))))))
(provide 'ego-template)
;;; ego-template.el ends here