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contrib/lisp/org-export: New function to export to a file 

* contrib/lisp/org-export.el (org-export-to-buffer): Slight change to
  doc-string.
(org-export-to-file): New function.
This commit is contained in:
Nicolas Goaziou 2011-12-20 13:49:06 +01:00
parent 0c09a9e768
commit 69505ed062
1 changed files with 42 additions and 9 deletions
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51
contrib/lisp/org-export.el
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@ -1908,8 +1908,8 @@ developer-specified filters, if any, are called first."
;;; Core functions
;; This is the room for the main function, `org-export-as', along with
;; its derivative, `org-export-to-buffer'. They differ only by the
;; way they output the resulting code.
;; its derivatives, `org-export-to-buffer' and `org-export-to-file'.
;; They differ only by the way they output the resulting code.
;; Note that `org-export-as' doesn't really parse the current buffer,
;; but a copy of it (with the same buffer-local variables and
@ -1986,7 +1986,8 @@ Return code as a string."
(org-export-filter-apply-functions
org-export-filter-final-output-functions body backend)))))))
(defun org-export-to-buffer (backend buffer &optional subtreep visible-only body-only ext-plist)
(defun org-export-to-buffer (backend buffer &optional subtreep visible-only
body-only ext-plist)
"Call `org-export-as' with output to a specified buffer.
BACKEND is the back-end used for transcoding, as a symbol.
@ -1994,12 +1995,8 @@ BACKEND is the back-end used for transcoding, as a symbol.
BUFFER is the output buffer. If it already exists, it will be
erased first, otherwise, it will be created.
Arguments SUBTREEP, VISIBLE-ONLY and BODY-ONLY are similar to
those used in `org-export-as'.
EXT-PLIST, when provided, is a property list with external
parameters overriding Org default settings, but still inferior to
file-local settings.
Arguments SUBTREEP, VISIBLE-ONLY, BODY-ONLY and EXT-PLIST are
similar to those used in `org-export-as', which see.
Return buffer."
(let ((out (org-export-as backend subtreep visible-only body-only ext-plist))
@ -2010,6 +2007,42 @@ Return buffer."
(goto-char (point-min)))
buffer))
(defun org-export-to-file (backend filename &optional post-process subtreep
visible-only body-only ext-plist)
"Call `org-export-as' with output to a specified file.
BACKEND is the back-end used for transcoding, as a symbol.
FILENAME is the output file name. If it already exists, it will
be erased first, unless it isn't writable, in which case an error
will be returned. Otherwise, the file will be created.
Optional argument POST-PROCESS, when non-nil, is a function
applied to the output file. It expects one argument: the file
name, as a string. It can be used to call shell commands on that
file, display a specific buffer, etc.
Optional arguments SUBTREEP, VISIBLE-ONLY, BODY-ONLY and
EXT-PLIST are similar to those used in `org-export-as', which
see.
Return file name."
;; Checks for file and directory permissions.
(cond
((not (file-exists-p filename))
(let ((dir (or (file-name-directory filename) default-directory)))
(unless (file-writable-p dir) (error "Output directory not writable"))))
((not (file-writable-p filename)) (error "Output file not writable")))
;; All checks passed: insert contents to a temporary buffer and
;; write it to the specified file.
(let ((out (org-export-as backend subtreep visible-only body-only ext-plist)))
(with-temp-buffer
(insert out)
(write-file filename)))
(when post-process (funcall post-process filename))
;; Return value.
filename)
(defmacro org-export-with-current-buffer-copy (&rest body)
"Apply BODY in a copy of the current buffer.