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org-exp.el: Allow easy plugging in of new backends
PATCH-2/5: org-odt compatibility From 2bc4854fb86a96b69e53db00603e0b2f8f47fe08 Mon Sep 17 00:00:00 2001 From: Jambunathan K <kjambunathan@gmail.com> Date: Thu, 23 Jun 2011 02:16:30 +0530 Subject: [PATCH 2/5] org-exp.el: Allow easy plugging in of new backends. * lisp/org-exp.el (org-export-backends): New variable. (org-export-select-backend-specific-text): Use above variable. Also mark text between #+BACKEND and #+BEGIN_BACKEND...#+END_BACKEND with org-native-text property. This text property is currently used only by the new line-oriented generic exporter (which is not yet part of the repo).
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@ -1661,52 +1661,53 @@ from the buffer."
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(add-text-properties beg (if (bolp) (1- (point)) (point))
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'(org-protected t)))))
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(defvar org-export-backends
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'(docbook html beamer ascii latex)
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"List of Org supported export backends.")
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(defun org-export-select-backend-specific-text ()
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(let ((formatters
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'((docbook "DOCBOOK" "BEGIN_DOCBOOK" "END_DOCBOOK")
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(html "HTML" "BEGIN_HTML" "END_HTML")
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(beamer "BEAMER" "BEGIN_BEAMER" "END_BEAMER")
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(ascii "ASCII" "BEGIN_ASCII" "END_ASCII")
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(latex "LaTeX" "BEGIN_LaTeX" "END_LaTeX")))
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(let ((formatters org-export-backends)
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(case-fold-search t)
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fmt beg beg-content end end-content ind)
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backend backend-name beg beg-content end end-content ind)
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(while formatters
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(setq fmt (pop formatters))
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;; Handle #+backend: stuff
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(setq backend (pop formatters)
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backend-name (symbol-name backend))
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;; Handle #+BACKEND: stuff
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(goto-char (point-min))
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(while (re-search-forward (concat "^\\([ \t]*\\)#\\+" (cadr fmt)
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(while (re-search-forward (concat "^\\([ \t]*\\)#\\+" backend-name
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":[ \t]*\\(.*\\)") nil t)
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(if (not (eq (car fmt) org-export-current-backend))
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(if (not (eq backend org-export-current-backend))
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(delete-region (point-at-bol) (min (1+ (point-at-eol)) (point-max)))
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(replace-match "\\1\\2" t)
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(add-text-properties
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(point-at-bol) (min (1+ (point-at-eol)) (point-max))
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`(org-protected t original-indentation ,ind))))
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;; Delete #+attr_Backend: stuff of another backend. Those
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`(org-protected t original-indentation ,ind org-native-text t))))
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;; Delete #+ATTR_BACKEND: stuff of another backend. Those
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;; matching the current backend will be taken care of by
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;; `org-export-attach-captions-and-attributes'
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(goto-char (point-min))
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(while (re-search-forward (concat "^\\([ \t]*\\)#\\+attr_" (cadr fmt)
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(while (re-search-forward (concat "^\\([ \t]*\\)#\\+ATTR_" backend-name
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":[ \t]*\\(.*\\)") nil t)
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(setq ind (org-get-indentation))
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(when (not (eq (car fmt) org-export-current-backend))
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(when (not (eq backend org-export-current-backend))
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(delete-region (point-at-bol) (min (1+ (point-at-eol)) (point-max)))))
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;; Handle #+begin_backend and #+end_backend stuff
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;; Handle #+BEGIN_BACKEND and #+END_BACKEND stuff
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(goto-char (point-min))
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(while (re-search-forward (concat "^[ \t]*#\\+" (caddr fmt) "\\>.*\n?")
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(while (re-search-forward (concat "^[ \t]*#\\+BEGIN_" backend-name "\\>.*\n?")
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nil t)
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(setq beg (match-beginning 0) beg-content (match-end 0))
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(setq ind (save-excursion (goto-char beg) (org-get-indentation)))
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(when (re-search-forward (concat "^[ \t]*#\\+" (cadddr fmt) "\\>.*\n?")
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(when (re-search-forward (concat "^[ \t]*#\\+END_" backend-name "\\>.*\n?")
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nil t)
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(setq end (match-end 0) end-content (match-beginning 0))
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(if (eq (car fmt) org-export-current-backend)
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(if (eq backend org-export-current-backend)
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;; yes, keep this
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(progn
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(add-text-properties
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beg-content end-content
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`(org-protected t original-indentation ,ind))
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`(org-protected t original-indentation ,ind org-native-text t))
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(delete-region (match-beginning 0) (match-end 0))
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(save-excursion
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(goto-char beg)
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