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* [PATCH] New feature: Use dvisvgm to preview latex formular
@ 2016-05-14  6:30 Feng Shu
  2016-05-14  8:47 ` numbchild
  2016-05-14 14:56 ` Feng Shu
  0 siblings, 2 replies; 25+ messages in thread
From: Feng Shu @ 2016-05-14  6:30 UTC (permalink / raw)
  To: orgmode-devel; +Cc: Feng Shu

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From 4e40deddfb342135b78df83fc5a05ddbce965300 Mon Sep 17 00:00:00 2001
From: Feng Shu <tumashu@163.com>
Date: Fri, 13 May 2016 20:12:22 +0800
Subject: [PATCH] New feature: Use dvisvgm to preview latex formular

Tester should set like below:

    (setq org-latex-create-formula-image-program 'dvisvgm)
    (setq org-latex-pdf-process
          '(:fetcher my-org-latex-pdf-process-format))
    (defun my-org-latex-pdf-process-format (&optional texfile snippet caller-info)
      (cond
       (snippet '("latex -interaction nonstopmode -output-directory %o %f"))
       (t '("%latex -interaction nonstopmode -output-directory %o %f"
            "%latex -interaction nonstopmode -output-directory %o %f"
            "%latex -interaction nonstopmode -output-directory %o %f"))))

* ox-latex.el (org-latex-pdf-process): Add a new config method, :fetcher.
(org-latex-compile): Add a new optional argument: caller-info,
                     which used to record the caller's info

* ox-html.el (org-html-with-latex): Add dvisvgm support.
(org-html-with-latex): Add dvisvgm support.
(org-html-format-latex): "ltxpng" -> "ltximg".
(org-html-latex-environment): Add dvisvgm support.
(org-html-latex-fragment): Add dvisvgm support.

* org.el (org-latex-create-formula-image-program): Add dvisvgm.
(org-latex-preview-ltximg-directory): Rename from `org-latex-preview-ltximg-directory'.
(org--format-latex-make-overlay): Add optional image-type, which used to deal with svg.
(org-toggle-latex-fragment): "org-ltxpng" -> "org-ltximg".
(org-format-latex): Add dvisvgm support.
(org-create-formula-image): Add dvisvgm case.
(org-create-formula-image-with-dvisvgm): New function, deal with latex formula with dvisvgm command.

* org.texi (@LaTeX{} fragments): Add dvisvgm information.
(Previewing @LaTeX{} fragments): Add dvisvgm information.
(Math formatting in HTML export): Add dvisvgm information.
(Working with @LaTeX{} math snippets): Add dvisvgm information.
---
 doc/org.texi     |  39 ++++++++-----
 lisp/org.el      | 110 ++++++++++++++++++++++++++++-------
 lisp/ox-html.el  |  23 ++++----
 lisp/ox-latex.el | 171 +++++++++++++++++++++++++++++++++++--------------------
 4 files changed, 237 insertions(+), 106 deletions(-)

diff --git a/doc/org.texi b/doc/org.texi
index 17b01c2..286fabb 100644
--- a/doc/org.texi
+++ b/doc/org.texi
@@ -10393,10 +10393,10 @@ snippets will be identified as @LaTeX{} source code:
 @item
 Environments of any kind@footnote{When MathJax is used, only the
 environments recognized by MathJax will be processed.  When
-@file{dvipng} program or @file{imagemagick} suite is used to create images,
-any @LaTeX{} environment will be handled.}.  The only requirement is that the
-@code{\begin} statement appears on a new line, at the beginning of the line
-or after whitespaces only.
+@file{dvipng} program, @file{dvisvgm} program or @file{imagemagick} suite is
+used to create images, any @LaTeX{} environment will be handled.}.  The only
+requirement is that the @code{\begin} statement appears on a new line, at the
+beginning of the line or after whitespaces only.
 @item
 Text within the usual @LaTeX{} math delimiters.  To avoid conflicts with
 currency specifications, single @samp{$} characters are only recognized as
@@ -10444,10 +10444,10 @@ lines:
 @cindex @LaTeX{} fragments, preview
 
 @vindex org-latex-create-formula-image-program
-If you have a working @LaTeX{} installation and either @file{dvipng} or
-@file{convert} installed@footnote{These are respectively available at
-@url{http://sourceforge.net/projects/dvipng/} and from the @file{imagemagick}
-suite. Choose the converter by setting the variable
+If you have a working @LaTeX{} installation and @file{dvipng}, @file{dvisvgm}
+or @file{convert} installed@footnote{These are respectively available at
+@url{http://sourceforge.net/projects/dvipng/}, @url{http://dvisvgm.bplaced.net/}
+and from the @file{imagemagick} suite. Choose the converter by setting the variable
 @code{org-latex-create-formula-image-program} accordingly.}, @LaTeX{}
 fragments can be processed to produce images of the typeset expressions to be
 used for inclusion while exporting to HTML (see @pxref{@LaTeX{} fragments}),
@@ -11713,6 +11713,7 @@ You could use @code{http} addresses just as well.
 @subsection Math formatting in HTML export
 @cindex MathJax
 @cindex dvipng
+@cindex dvisvgm
 @cindex imagemagick
 
 @LaTeX{} math snippets (@pxref{@LaTeX{} fragments}) can be displayed in two
@@ -11737,13 +11738,18 @@ template can be configure via @code{org-html-mathjax-template}.
 If you prefer, you can also request that @LaTeX{} fragments are processed
 into small images that will be inserted into the browser page.  Before the
 availability of MathJax, this was the default method for Org files.  This
-method requires that the @file{dvipng} program or @file{imagemagick} suite is
-available on your system.  You can still get this processing with
+method requires that the @file{dvipng} program, @file{dvisvgm} or
+@file{imagemagick} suite is available on your system.  You can still get
+this processing with
 
 @example
 #+OPTIONS: tex:dvipng
 @end example
 
+@example
+#+OPTIONS: tex:dvisvgm
+@end example
+
 or:
 
 @example
@@ -12908,6 +12914,7 @@ and open the formula file with the system-registered application.
 @end table
 
 @cindex dvipng
+@cindex dvisvgm
 @cindex imagemagick
 @item PNG images
 
@@ -12917,16 +12924,20 @@ This option is activated on a per-file basis with
 #+OPTIONS: tex:dvipng
 @end example
 
+@example
+#+OPTIONS: tex:dvisvgm
+@end example
+
 or:
 
 @example
 #+OPTIONS: tex:imagemagick
 @end example
 
-With this option, @LaTeX{} fragments are processed into PNG images and the
-resulting images are embedded in the exported document.  This method requires
-that the @file{dvipng} program or @file{imagemagick} suite be available on
-your system.
+With this option, @LaTeX{} fragments are processed into PNG or SVG images and
+the resulting images are embedded in the exported document.  This method requires
+that the @file{dvipng} program, @file{dvisvgm} or @file{imagemagick} suite be
+available on your system.
 @end enumerate
 
 @node Working with MathML or OpenDocument formula files
diff --git a/lisp/org.el b/lisp/org.el
index f45d5d0..87f8d3a 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -3983,17 +3983,24 @@ When using LaTeXML set this option to
   "Program to convert LaTeX fragments with.
 
 dvipng          Process the LaTeX fragments to dvi file, then convert
-                dvi files to png files using dvipng.
-                This will also include processing of non-math environments.
+		dvi files to png files using dvipng.
+		This will also include processing of non-math environments.
+dvisvgm         Process the LaTeX fragments to dvi/xdv file, then convert
+		dvi/xdv files to svg files using dvipng.
+		This will also include processing of non-math environments.
 imagemagick     Convert the LaTeX fragments to pdf files and use imagemagick
-                to convert pdf files to png files"
+		to convert pdf files to png files."
   :group 'org-latex
   :version "24.1"
   :type '(choice
 	  (const :tag "dvipng" dvipng)
+	  (const :tag "dvisvgm" dvisvgm)
 	  (const :tag "imagemagick" imagemagick)))
 
-(defcustom org-latex-preview-ltxpng-directory "ltxpng/"
+(defalias 'org-latex-preview-ltxpng-directory 'org-latex-preview-ltximg-directory)
+(make-obsolete 'org-latex-preview-ltxpng-directory 'org-latex-preview-ltximg-directory
+	       "Org mode version 9.0")
+(defcustom org-latex-preview-ltximg-directory "ltximg/"
   "Path to store latex preview images.
 A relative path here creates many directories relative to the
 processed org files paths.  An absolute path puts all preview
@@ -18996,9 +19003,10 @@ looks only before point, not after."
     (org-in-regexp
      "\\\\[a-zA-Z]+\\*?\\(\\(\\[[^][\n{}]*\\]\\)\\|\\({[^{}\n]*}\\)\\)*")))
 
-(defun org--format-latex-make-overlay (beg end image)
+(defun org--format-latex-make-overlay (beg end image &optional image-type)
   "Build an overlay between BEG and END using IMAGE file."
-  (let ((ov (make-overlay beg end)))
+  (let ((ov (make-overlay beg end))
+	(image-type (or image-type 'png)))
     (overlay-put ov 'org-overlay-type 'org-latex-overlay)
     (overlay-put ov 'evaporate t)
     (overlay-put ov
@@ -19008,10 +19016,10 @@ looks only before point, not after."
     (if (featurep 'xemacs)
 	(progn
 	  (overlay-put ov 'invisible t)
-	  (overlay-put ov 'end-glyph (make-glyph (vector 'png :file image))))
+	  (overlay-put ov 'end-glyph (make-glyph (vector image-type :file image))))
       (overlay-put ov
 		   'display
-		   (list 'image :type 'png :file image :ascent 'center)))))
+		   (list 'image :type image-type :file image :ascent 'center)))))
 
 (defun org--list-latex-overlays (&optional beg end)
   "List all Org LaTeX overlays in current buffer.
@@ -19092,7 +19100,7 @@ for all fragments in the buffer."
 		   (narrow-to-region beg end))))))
 	    (let ((file (buffer-file-name (buffer-base-buffer))))
 	      (org-format-latex
-	       (concat org-latex-preview-ltxpng-directory "org-ltxpng")
+	       (concat org-latex-preview-ltximg-directory "org-ltximg")
 	       ;; Emacs cannot overlay images from remote hosts.
 	       ;; Create it in `temporary-file-directory' instead.
 	       (if (or (not file) (file-remote-p file))
@@ -19123,7 +19131,7 @@ Some of the options can be changed using the variable
 	   checkdir-flag)
       (goto-char (point-min))
       ;; Optimize overlay creation: (info "(elisp) Managing Overlays").
-      (when (and overlays (memq processing-type '(dvipng imagemagick)))
+      (when (and overlays (memq processing-type '(dvipng dvisvgm imagemagick)))
 	(overlay-recenter (point-max)))
       (while (re-search-forward math-regexp nil t)
 	(unless (and overlays
@@ -19148,7 +19156,7 @@ Some of the options can be changed using the variable
 		     (if (string= (match-string 0 value) "$$")
 			 (insert "\\[" (substring value 2 -2) "\\]")
 		       (insert "\\(" (substring value 1 -1) "\\)"))))
-		  ((dvipng imagemagick)
+		  ((dvipng dvisvgm imagemagick)
 		   ;; Process to an image.
 		   (cl-incf cnt)
 		   (goto-char beg)
@@ -19172,9 +19180,11 @@ Some of the options can be changed using the variable
 					     org-latex-packages-alist
 					     org-format-latex-options
 					     forbuffer value fg bg))))
+			  (imagetype (if (eq processing-type 'dvisvgm)
+					 'svg 'png))
 			  (absprefix (expand-file-name prefix dir))
-			  (linkfile (format "%s_%s.png" prefix hash))
-			  (movefile (format "%s_%s.png" absprefix hash))
+			  (linkfile (format "%s_%s.%s" prefix hash imagetype))
+			  (movefile (format "%s_%s.%s" absprefix hash imagetype))
 			  (sep (and block-type "\n\n"))
 			  (link (concat sep "[[file:" linkfile "]]" sep))
 			  (options
@@ -19196,7 +19206,7 @@ Some of the options can be changed using the variable
 			     (when (eq (overlay-get o 'org-overlay-type)
 				       'org-latex-overlay)
 			       (delete-overlay o)))
-			   (org--format-latex-make-overlay beg end movefile)
+			   (org--format-latex-make-overlay beg end movefile imagetype)
 			   (goto-char end))
 		       (delete-region beg end)
 		       (insert
@@ -19315,10 +19325,10 @@ inspection."
 
 (defun org-create-formula-image (string tofile options buffer &optional type)
   "Create an image from LaTeX source using dvipng or convert.
-This function calls either `org-create-formula-image-with-dvipng'
-or `org-create-formula-image-with-imagemagick' depending on the
-value of `org-latex-create-formula-image-program' or on the value
-of the optional TYPE variable.
+This function calls `org-create-formula-image-with-dvipng'
+`org-create-formula-image-with-dvisvgm' or `org-create-formula-image-with-imagemagick'
+depending on the value of `org-latex-create-formula-image-program' or
+on the value of the optional TYPE variable.
 
 Note: ultimately these two function should be combined as they
 share a good deal of logic."
@@ -19330,12 +19340,16 @@ share a good deal of logic."
       (org-check-external-command
        "dvipng" "needed to convert LaTeX fragments to images")
       #'org-create-formula-image-with-dvipng)
+     (dvisvgm
+      (org-check-external-command
+       "dvisvgm" "needed to convert LaTeX fragments to images")
+      #'org-create-formula-image-with-dvisvgm)
      (imagemagick
       (org-check-external-command
        "convert" "you need to install imagemagick")
       #'org-create-formula-image-with-imagemagick)
      (t (error
-         "Invalid value of `org-latex-create-formula-image-program'")))
+	 "Invalid value of `org-latex-create-formula-image-program'")))
    string tofile options buffer))
 
 (declare-function org-export-get-backend "ox" (name))
@@ -19429,6 +19443,64 @@ horizontal and vertical directions."
 	    (delete-file (concat texfilebase e))))
 	pngfile))))
 
+(defun org-create-formula-image-with-dvisvgm (string tofile options buffer)
+  "This calls dvisvgm."
+  (require 'ox-latex)
+  (let* ((tmpdir (if (featurep 'xemacs)
+		     (temp-directory)
+		   temporary-file-directory))
+	 (texfilebase (make-temp-name
+		       (expand-file-name "orgtex" tmpdir)))
+	 (texfile (concat texfilebase ".tex"))
+	 (dvifile (concat texfilebase ".dvi"))
+	 (xdvfile (concat texfilebase ".xdv"))
+	 (svgfile (concat texfilebase ".svg"))
+	 (scale (number-to-string (or (plist-get options (if buffer :scale :html-scale)) 2.0)))
+	 (fg (or (plist-get options (if buffer :foreground :html-foreground))
+		 "Black"))
+	 (bg (or (plist-get options (if buffer :background :html-background))
+		 "Transparent")))
+    (if (eq fg 'default) (setq fg (org-latex-color :foreground))
+      (setq fg (org-latex-color-format fg)))
+    (if (eq bg 'default) (setq bg (org-latex-color :background))
+      (setq bg (org-latex-color-format
+		(if (string= bg "Transparent") "white" bg))))
+    (let ((latex-header (org-create-formula--latex-header)))
+      (with-temp-file texfile
+	(insert latex-header)
+	(insert "\n\\begin{document}\n"
+		"\\definecolor{fg}{rgb}{" fg "}\n"
+		"\\definecolor{bg}{rgb}{" bg "}\n"
+		"\n\\pagecolor{bg}\n"
+		"\n{\\color{fg}\n"
+		string
+		"\n}\n"
+		"\n\\end{document}\n")))
+    (org-latex-compile texfile t '(:name dvisvgm :need dvi))
+    (if (not (or (file-exists-p dvifile)
+		 (file-exists-p xdvfile)))
+	(progn (message "Failed to create dvi or xdv file from %s" texfile) nil)
+      (ignore-errors
+	(call-process "dvisvgm" nil nil nil
+		      (if (file-exists-p dvifile)
+			  dvifile
+			xdvfile)
+		      "-n"
+		      "-b" "min"
+		      "-c" scale
+		      "-o" svgfile))
+      (if (not (file-exists-p svgfile))
+	  (if org-format-latex-signal-error
+	      (error "Failed to create svg file from %s" texfile)
+	    (message "Failed to create svg file from %s" texfile)
+	    nil)
+	;; Use the requested file name and clean up
+	(copy-file svgfile tofile 'replace)
+	(dolist (e '(".dvi" ".xdv" ".tex" ".aux" ".log" ".svg" ".out"))
+	  (when (file-exists-p (concat texfilebase e))
+	    (delete-file (concat texfilebase e))))
+	svgfile))))
+
 (declare-function org-latex-compile "ox-latex" (texfile &optional snippet))
 (defun org-create-formula-image-with-imagemagick (string tofile options buffer)
   "This calls convert, which is included into imagemagick."
diff --git a/lisp/ox-html.el b/lisp/ox-html.el
index b188c38..182b729 100644
--- a/lisp/ox-html.el
+++ b/lisp/ox-html.el
@@ -818,19 +818,22 @@ e.g. \"tex:mathjax\".  Allowed values are:
 
 nil            Ignore math snippets.
 `verbatim'     Keep everything in verbatim
-`dvipng'       Process the LaTeX fragments to images.  This will also
-               include processing of non-math environments.
+`dvipng'       Process the LaTeX fragments to png images.  This will also
+	       include processing of non-math environments.
+`dvisvgm'      Process the LaTeX fragments to svg images.  This will also
+	       include processing of non-math environments.
 `imagemagick'  Convert the LaTeX fragments to pdf files and use
-               imagemagick to convert pdf files to png files.
+	       imagemagick to convert pdf files to png files.
 `mathjax'      Do MathJax preprocessing and arrange for MathJax.js to
-               be loaded.
+	       be loaded.
 t              Synonym for `mathjax'."
   :group 'org-export-html
   :version "24.4"
   :package-version '(Org . "8.0")
   :type '(choice
 	  (const :tag "Do not process math in any way" nil)
-	  (const :tag "Use dvipng to make images" dvipng)
+	  (const :tag "Use dvipng to make png images" dvipng)
+	  (const :tag "Use dvisvgm to make svg images" dvisvgm)
 	  (const :tag "Use imagemagick to make images" imagemagick)
 	  (const :tag "Use MathJax to display math" mathjax)
 	  (const :tag "Leave math verbatim" verbatim)))
@@ -2760,8 +2763,8 @@ CONTENTS is nil.  INFO is a plist holding contextual information."
 (defun org-html-format-latex (latex-frag processing-type info)
   "Format a LaTeX fragment LATEX-FRAG into HTML.
 PROCESSING-TYPE designates the tool used for conversion.  It is
-a symbol among `mathjax', `dvipng', `imagemagick', `verbatim' nil
-and t.  See `org-html-with-latex' for more information.  INFO is
+a symbol among `mathjax', `dvipng', `dvisvgm', `imagemagick', `verbatim'
+nil and t.  See `org-html-with-latex' for more information.  INFO is
 a plist containing export properties."
   (let ((cache-relpath "") (cache-dir ""))
     (unless (eq processing-type 'mathjax)
@@ -2777,7 +2780,7 @@ a plist containing export properties."
 			     "\n")
 			    "\n")))))
 	(setq cache-relpath
-	      (concat "ltxpng/"
+	      (concat "ltximg/"
 		      (file-name-sans-extension
 		       (file-name-nondirectory bfn)))
 	      cache-dir (file-name-directory bfn))
@@ -2801,7 +2804,7 @@ CONTENTS is nil.  INFO is a plist holding contextual information."
     (case processing-type
       ((t mathjax)
        (org-html-format-latex latex-frag 'mathjax info))
-      ((dvipng imagemagick)
+      ((dvipng dvisvgm imagemagick)
        (let ((formula-link
 	      (org-html-format-latex latex-frag processing-type info)))
 	 (when (and formula-link (string-match "file:\\([^]]*\\)" formula-link))
@@ -2822,7 +2825,7 @@ CONTENTS is nil.  INFO is a plist holding contextual information."
     (case processing-type
       ((t mathjax)
        (org-html-format-latex latex-frag 'mathjax info))
-      ((dvipng imagemagick)
+      ((dvipng dvisvgm imagemagick)
        (let ((formula-link
 	      (org-html-format-latex latex-frag processing-type info)))
 	 (when (and formula-link (string-match "file:\\([^]]*\\)" formula-link))
diff --git a/lisp/ox-latex.el b/lisp/ox-latex.el
index 7fa68c5..6599721 100644
--- a/lisp/ox-latex.el
+++ b/lisp/ox-latex.el
@@ -1143,7 +1143,32 @@ which calls the \"correct\" combinations of auxiliary programs.
 Alternatively, this may be a Lisp function that does the
 processing, so you could use this to apply the machinery of
 AUCTeX or the Emacs LaTeX mode.  This function should accept the
-file name as its single argument."
+file name as its single argument.
+
+User can set this variable to a plist, the first element of the
+plist is :fetcher and the second is a function, for example:
+
+   (setq org-latex-pdf-process
+	   '(:fetcher my-org-latex-pdf-process-format))
+
+   (defun my-org-late-pdf-process-formt (&optional texfile snippet caller-info)
+     (cond
+	(snippet '(\"latex -interaction nonstopmode -output-directory %o %f\"))
+	(t '(\"%latex -interaction nonstopmode -output-directory %o %f\"
+	     \"%latex -interaction nonstopmode -output-directory %o %f\"
+	     \"%latex -interaction nonstopmode -output-directory %o %f\"))))
+
+`org-latex-compile' will call the second function, then use the
+returned command list.
+
+the function has three optional arguments: texfile, snippet and
+caller-info, when `org-latex-compile' compile a tex snippet for
+previewing, snippet will set to t and client-info argument will
+record the infomation of org-latex-compile's caller, for example:
+
+    (:name dvisvgm :need dvi)
+
+This information can be used to select tex command."
   :group 'org-export-pdf
   :type '(choice
 	  (repeat :tag "Shell command sequence"
@@ -2300,11 +2325,11 @@ used as a communication channel."
       (when (org-string-nw-p height)
 	(setq options (concat options ",height=" height)))
       (let ((search-option (org-element-property :search-option link)))
-        (when (and search-option
-                   (equal filetype "pdf")
-                   (org-string-match-p "\\`[0-9]+\\'" search-option)
-                   (not (org-string-match-p "page=" options)))
-          (setq options (concat options ",page=" search-option))))
+	(when (and search-option
+		   (equal filetype "pdf")
+		   (org-string-match-p "\\`[0-9]+\\'" search-option)
+		   (not (org-string-match-p "page=" options)))
+	  (setq options (concat options ",page=" search-option))))
       (setq image-code
 	    (format "\\includegraphics%s{%s}"
 		    (cond ((not (org-string-nw-p options)) "")
@@ -3515,7 +3540,7 @@ Return PDF file's name."
       async subtreep visible-only body-only ext-plist
       (lambda (file) (org-latex-compile file)))))
 
-(defun org-latex-compile (texfile &optional snippet)
+(defun org-latex-compile (texfile &optional snippet caller-info)
   "Compile a TeX file.
 
 TEXFILE is the name of the file being compiled.  Processing is
@@ -3525,6 +3550,16 @@ When optional argument SNIPPET is non-nil, TEXFILE is a temporary
 file used to preview a LaTeX snippet.  In this case, do not
 create a log buffer and do not bother removing log files.
 
+By default, `org-latex-compile' will compile `texfile' to a pdf
+file, but when we compile a tex snippet, the desired output may
+dvi or xdv file instead of pdf file, snippet-generate-function
+can tell `org-latex-compile' the infomation with the argument
+CALLER-INFO, then org-latex-compile can find proper commands
+with this infomation, this argument is a property list, for
+example:
+
+    (:caller dvisvgm :need dvi)
+
 Return PDF file name or an error if it couldn't be produced."
   (let* ((base-name (file-name-sans-extension (file-name-nondirectory texfile)))
 	 (full-name (file-truename texfile))
@@ -3544,62 +3579,72 @@ Return PDF file name or an error if it couldn't be produced."
 	 (time (current-time))
 	 warnings)
     (unless snippet (message "Processing LaTeX file %s..." texfile))
-    (save-window-excursion
-      (cond
-       ;; A function is provided: Apply it.
-       ((functionp org-latex-pdf-process)
-	(funcall org-latex-pdf-process (shell-quote-argument texfile)))
-       ;; A list is provided: Replace %b, %f and %o with appropriate
-       ;; values in each command before applying it.  Note that while
-       ;; "%latex" and "%bibtex" is used in `org-latex-pdf-process',
-       ;; they are replaced with "%L" and "%B" to adhere to
-       ;; format-spec.  Output is redirected to "*Org PDF LaTeX
-       ;; Output*" buffer.
-       ((consp org-latex-pdf-process)
-	(let ((outbuf (and (not snippet)
-			   (get-buffer-create "*Org PDF LaTeX Output*")))
-	      (spec (list (cons ?B  (shell-quote-argument org-latex-bib-compiler))
-			  (cons ?L (shell-quote-argument compiler))
-			  (cons ?b (shell-quote-argument base-name))
-			  (cons ?f (shell-quote-argument full-name))
-			  (cons ?o (shell-quote-argument out-dir)))))
-	  (dolist (command org-latex-pdf-process)
-	    (let ((c (replace-regexp-in-string
-		      "%\\(latex\\|bibtex\\)\\>"
-		      (lambda (str) (upcase (substring str 0 2)))
-		      command)))
-	      (shell-command (format-spec c spec) outbuf)))
-	  ;; Collect standard errors from output buffer.
-	  (setq warnings (and (not snippet)
-			      (org-latex--collect-warnings outbuf)))))
-       (t (error "No valid command to process to PDF")))
-      (let ((pdffile (concat out-dir base-name ".pdf")))
-	;; Check for process failure.  Provide collected errors if
-	;; possible.
-	(if (or (not (file-exists-p pdffile))
-		;; Only compare times up to whole seconds as some filesystems
-		;; (e.g. HFS+) do not retain any finer granularity.
-		(time-less-p (cl-subseq (nth 5 (file-attributes pdffile)) 0 2)
-			     (cl-subseq time 0 2)))
-	    (error (format "PDF file %s wasn't produced" pdffile))
-	  ;; Else remove log files, when specified, and signal end of
-	  ;; process to user, along with any error encountered.
-	  (unless snippet
-	    (when org-latex-remove-logfiles
-	      (dolist (file (directory-files
-			     out-dir t
-			     (concat (regexp-quote base-name)
-				     "\\(?:\\.[0-9]+\\)?"
-				     "\\."
-				     (regexp-opt org-latex-logfiles-extensions))))
-		(delete-file file)))
-	    (message (concat "PDF file produced"
-			     (cond
-			      ((eq warnings 'error) " with errors.")
-			      (warnings (concat " with warnings: " warnings))
-			      (t "."))))))
-	;; Return output file name.
-	pdffile))))
+    (let* ((fetcher-function (plist-get org-latex-pdf-process :fetcher))
+	   (latex-pdf-process
+	    (if fetcher-function
+		(if (functionp fetcher-function)
+		    (funcall fetcher-function
+			     (shell-quote-argument texfile) snippet caller-info)
+		  (error "`org-latex-pdf-process' set an invalid fetcher function."))
+	      org-latex-pdf-process)))
+      (save-window-excursion
+	(cond
+	 ;; A function is provided: Apply it.
+	 ((functionp latex-pdf-process)
+	  (funcall latex-pdf-process (shell-quote-argument texfile)))
+	 ;; A list is provided: Replace %b, %f and %o with appropriate
+	 ;; values in each command before applying it.  Note that while
+	 ;; "%latex" and "%bibtex" is used in `org-latex-pdf-process',
+	 ;; they are replaced with "%L" and "%B" to adhere to
+	 ;; format-spec.  Output is redirected to "*Org PDF LaTeX
+	 ;; Output*" buffer.
+	 ((consp latex-pdf-process)
+	  (let ((outbuf (and (not snippet)
+			     (get-buffer-create "*Org PDF LaTeX Output*")))
+		(spec (list (cons ?B  (shell-quote-argument org-latex-bib-compiler))
+			    (cons ?L (shell-quote-argument compiler))
+			    (cons ?b (shell-quote-argument base-name))
+			    (cons ?f (shell-quote-argument full-name))
+			    (cons ?o (shell-quote-argument out-dir)))))
+	    (dolist (command latex-pdf-process)
+	      (let ((c (replace-regexp-in-string
+			"%\\(latex\\|bibtex\\)\\>"
+			(lambda (str) (upcase (substring str 0 2)))
+			command)))
+		(shell-command (format-spec c spec) outbuf)))
+	    ;; Collect standard errors from output buffer.
+	    (setq warnings (and (not snippet)
+				(org-latex--collect-warnings outbuf)))))
+	 (t (error "No valid command to process to PDF")))
+	(let ((pdffile (concat out-dir base-name ".pdf")))
+	  ;; Check for process failure.  Provide collected errors if
+	  ;; possible.
+	  (if (or (not (file-exists-p pdffile))
+		  ;; Only compare times up to whole seconds as some filesystems
+		  ;; (e.g. HFS+) do not retain any finer granularity.
+		  (time-less-p (cl-subseq (nth 5 (file-attributes pdffile)) 0 2)
+			       (cl-subseq time 0 2)))
+	      ;; When compile a tex snippet, we may only need dvi file
+	      (unless snippet
+		(error (format "PDF file %s wasn't produced" pdffile)))
+	    ;; Else remove log files, when specified, and signal end of
+	    ;; process to user, along with any error encountered.
+	    (unless snippet
+	      (when org-latex-remove-logfiles
+		(dolist (file (directory-files
+			       out-dir t
+			       (concat (regexp-quote base-name)
+				       "\\(?:\\.[0-9]+\\)?"
+				       "\\."
+				       (regexp-opt org-latex-logfiles-extensions))))
+		  (delete-file file)))
+	      (message (concat "PDF file produced"
+			       (cond
+				((eq warnings 'error) " with errors.")
+				(warnings (concat " with warnings: " warnings))
+				(t "."))))))
+	  ;; Return output file name.
+	  pdffile)))))
 
 (defun org-latex--collect-warnings (buffer)
   "Collect some warnings from \"pdflatex\" command output.
-- 
2.1.4


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-- 

^ permalink raw reply related	[flat|nested] 25+ messages in thread
end of thread, other threads:[~2016-05-21 13:35 UTC | newest]

Thread overview: 25+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-05-14  6:30 [PATCH] New feature: Use dvisvgm to preview latex formular Feng Shu
2016-05-14  8:47 ` numbchild
2016-05-14 14:56 ` Feng Shu
2016-05-15  2:27   ` Feng Shu
2016-05-15  6:02   ` (version 3) " Feng Shu
2016-05-15 12:14     ` Feng Shu
2016-05-15 22:32       ` Nicolas Goaziou
2016-05-16  5:32         ` Feng Shu
2016-05-16 13:18           ` Nicolas Goaziou
2016-05-16 15:06             ` tumashu
2016-05-16  5:33         ` Feng Shu
2016-05-16 13:19           ` Nicolas Goaziou
2016-05-16 12:05         ` (v6) " Feng Shu
2016-05-16 21:17           ` Nicolas Goaziou
2016-05-16 22:17             ` tumashu
2016-05-17  1:15             ` tumashu
2016-05-18  6:30             ` (V8) " Feng Shu
2016-05-19  8:22               ` Nicolas Goaziou
2016-05-19  9:18                 ` tumashu
2016-05-19 10:32                   ` Nicolas Goaziou
2016-05-19 14:01                     ` (V9) " Feng Shu
2016-05-21  9:38                       ` Nicolas Goaziou
2016-05-21 12:22                         ` Feng Shu
2016-05-21 13:35                           ` Rasmus
2016-05-15 12:16     ` (version 4) " Feng Shu

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