]> code.delx.au - gnu-emacs/blobdiff - lisp/org/ob-exp.el
Update copyright year to 2016
[gnu-emacs] / lisp / org / ob-exp.el
index c62a6a8211d6fcd1053c5ca148fd04a023048575..c04e1307314824bc0f05ef8501d4f6f8bd4ad4c4 100644 (file)
@@ -1,6 +1,6 @@
 ;;; ob-exp.el --- Exportation of org-babel source blocks
 
-;; Copyright (C) 2009-2013 Free Software Foundation, Inc.
+;; Copyright (C) 2009-2016 Free Software Foundation, Inc.
 
 ;; Authors: Eric Schulte
 ;;     Dan Davison
 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
 ;;; Code:
-(require 'ob)
-(require 'org-exp-blocks)
+(require 'ob-core)
+(require 'org-src)
 (eval-when-compile
   (require 'cl))
 
-(defvar obe-marker nil)
 (defvar org-current-export-file)
 (defvar org-babel-lob-one-liner-regexp)
 (defvar org-babel-ref-split-regexp)
 
 (declare-function org-babel-lob-get-info "ob-lob" ())
 (declare-function org-babel-eval-wipe-error-buffer "ob-eval" ())
+(declare-function org-between-regexps-p "org"
+                 (start-re end-re &optional lim-up lim-down))
+(declare-function org-get-indentation "org" (&optional line))
 (declare-function org-heading-components "org" ())
+(declare-function org-in-block-p "org" (names))
+(declare-function org-in-verbatim-emphasis "org" ())
 (declare-function org-link-search "org" (s &optional type avoid-pos stealth))
 (declare-function org-fill-template "org" (template alist))
-(declare-function org-in-verbatim-emphasis "org" ())
-(declare-function org-in-block-p "org" (names))
-(declare-function org-between-regexps-p "org" (start-re end-re &optional lim-up lim-down))
-
-(add-to-list 'org-export-interblocks '(src org-babel-exp-non-block-elements))
-(org-export-blocks-add-block '(src org-babel-exp-src-block nil))
+(declare-function org-split-string "org" (string &optional separators))
+(declare-function org-element-at-point "org-element" (&optional keep-trail))
+(declare-function org-element-context "org-element" ())
+(declare-function org-element-property "org-element" (property element))
+(declare-function org-element-type "org-element" (element))
+(declare-function org-escape-code-in-string "org-src" (s))
 
 (defcustom org-export-babel-evaluate t
   "Switch controlling code evaluation during export.
 When set to nil no code will be evaluated as part of the export
-process."
+process.  When set to `inline-only', only inline code blocks will
+be executed."
   :group 'org-babel
   :version "24.1"
-  :type 'boolean)
+  :type '(choice (const :tag "Never" nil)
+                (const :tag "Only inline code" inline-only)
+                (const :tag "Always" t)))
 (put 'org-export-babel-evaluate 'safe-local-variable (lambda (x) (eq x nil)))
 
 (defun org-babel-exp-get-export-buffer ()
@@ -63,6 +70,8 @@ process."
    ('otherwise
     (error "Requested export buffer when `org-current-export-file' is nil"))))
 
+(defvar org-link-search-inhibit-query)
+
 (defmacro org-babel-exp-in-export-file (lang &rest body)
   (declare (indent 1))
   `(let* ((lang-headers (intern (concat "org-babel-default-header-args:" ,lang)))
@@ -87,10 +96,10 @@ process."
        results)))
 (def-edebug-spec org-babel-exp-in-export-file (form body))
 
-(defun org-babel-exp-src-block (body &rest headers)
+(defun org-babel-exp-src-block (&rest headers)
   "Process source block for export.
-Depending on the 'export' headers argument in replace the source
-code block with...
+Depending on the `export' headers argument, replace the source
+code block like this:
 
 both ---- display the code and the results
 
@@ -100,11 +109,12 @@ code ---- the default, display the code inside the block but do
 results - just like none only the block is run on export ensuring
           that it's results are present in the org-mode buffer
 
-none ----- do not display either code or results upon export"
+none ---- do not display either code or results upon export
+
+Assume point is at the beginning of block's starting line."
   (interactive)
   (unless noninteractive (message "org-babel-exp processing..."))
   (save-excursion
-    (goto-char (match-beginning 0))
     (let* ((info (org-babel-get-src-block-info 'light))
           (lang (nth 0 info))
           (raw-params (nth 2 info)) hash)
@@ -115,11 +125,11 @@ none ----- do not display either code or results upon export"
          (org-babel-exp-in-export-file lang
            (setf (nth 2 info)
                  (org-babel-process-params
-                  (org-babel-merge-params
-                   org-babel-default-header-args
-                   (org-babel-params-from-properties lang)
-                   (if (boundp lang-headers) (eval lang-headers) nil)
-                   raw-params))))
+                  (apply #'org-babel-merge-params
+                         org-babel-default-header-args
+                         (if (boundp lang-headers) (eval lang-headers) nil)
+                         (append (org-babel-params-from-properties lang)
+                                 (list raw-params))))))
          (setf hash (org-babel-sha1-hash info)))
        (org-babel-exp-do-export info 'block hash)))))
 
@@ -141,75 +151,138 @@ this template."
   :type 'string)
 
 (defvar org-babel-default-lob-header-args)
-(defun org-babel-exp-non-block-elements (start end)
-  "Process inline source and call lines between START and END for export."
+(defun org-babel-exp-process-buffer ()
+  "Execute all Babel blocks in current buffer."
   (interactive)
-  (save-excursion
-    (goto-char start)
-    (unless (markerp end)
-      (let ((m (make-marker)))
-       (set-marker m end (current-buffer))
-       (setq end m)))
-    (let ((rx (concat "\\("  org-babel-inline-src-block-regexp
-                     "\\|" org-babel-lob-one-liner-regexp "\\)")))
-      (while (and (< (point) (marker-position end))
-                 (re-search-forward rx end t))
-       (if (save-excursion
-             (goto-char (match-beginning 0))
-             (looking-at org-babel-inline-src-block-regexp))
-           (progn
-             (forward-char 1)
-             (let* ((info (save-match-data
-                            (org-babel-parse-inline-src-block-match)))
-                    (params (nth 2 info)))
-               (save-match-data
-                 (goto-char (match-beginning 2))
-                 (unless (org-babel-in-example-or-verbatim)
-                   ;; expand noweb references in the original file
-                   (setf (nth 1 info)
-                         (if (and (cdr (assoc :noweb params))
-                                  (string= "yes" (cdr (assoc :noweb params))))
-                             (org-babel-expand-noweb-references
-                              info (org-babel-exp-get-export-buffer))
-                           (nth 1 info)))
-                   (let ((code-replacement (save-match-data
-                                             (org-babel-exp-do-export
-                                              info 'inline))))
-                     (if code-replacement
-                         (progn (replace-match code-replacement nil nil nil 1)
-                                (delete-char 1))
-                       (org-babel-examplize-region (match-beginning 1)
-                                                   (match-end 1))
-                       (forward-char 2)))))))
-         (unless (org-babel-in-example-or-verbatim)
-           (let* ((lob-info (org-babel-lob-get-info))
-                  (inlinep (match-string 11))
-                  (inline-start (match-end 11))
-                  (inline-end (match-end 0))
-                  (results (save-match-data
-                             (org-babel-exp-do-export
-                              (list "emacs-lisp" "results"
-                                    (org-babel-merge-params
-                                     org-babel-default-header-args
-                                     org-babel-default-lob-header-args
+  (save-window-excursion
+    (save-excursion
+      (let ((case-fold-search t)
+           (regexp (concat org-babel-inline-src-block-regexp "\\|"
+                           org-babel-lob-one-liner-regexp "\\|"
+                           "^[ \t]*#\\+BEGIN_SRC")))
+       (goto-char (point-min))
+       (while (re-search-forward regexp nil t)
+         (let* ((element (save-excursion
+                           ;; If match is inline, point is at its
+                           ;; end.  Move backward so
+                           ;; `org-element-context' can get the
+                           ;; object, not the following one.
+                           (backward-char)
+                           (save-match-data (org-element-context))))
+                (type (org-element-type element))
+                (begin (copy-marker (org-element-property :begin element)))
+                (end (copy-marker
+                      (save-excursion
+                        (goto-char (org-element-property :end element))
+                        (skip-chars-backward " \r\t\n")
+                        (point)))))
+           (case type
+             (inline-src-block
+              (let* ((info (org-babel-parse-inline-src-block-match))
+                     (params (nth 2 info)))
+                (setf (nth 1 info)
+                      (if (and (cdr (assoc :noweb params))
+                               (string= "yes" (cdr (assoc :noweb params))))
+                          (org-babel-expand-noweb-references
+                           info (org-babel-exp-get-export-buffer))
+                        (nth 1 info)))
+                (goto-char begin)
+                (let ((replacement (org-babel-exp-do-export info 'inline)))
+                  (if (equal replacement "")
+                      ;; Replacement code is empty: remove inline src
+                      ;; block, including extra white space that
+                      ;; might have been created when inserting
+                      ;; results.
+                      (delete-region begin
+                                     (progn (goto-char end)
+                                            (skip-chars-forward " \t")
+                                            (point)))
+                    ;; Otherwise: remove inline src block but
+                    ;; preserve following white spaces.  Then insert
+                    ;; value.
+                    (delete-region begin end)
+                    (insert replacement)))))
+             ((babel-call inline-babel-call)
+              (let* ((lob-info (org-babel-lob-get-info))
+                     (results
+                      (org-babel-exp-do-export
+                       (list "emacs-lisp" "results"
+                             (apply #'org-babel-merge-params
+                                    org-babel-default-header-args
+                                    org-babel-default-lob-header-args
+                                    (append
                                      (org-babel-params-from-properties)
-                                     (org-babel-parse-header-arguments
-                                      (org-no-properties
-                                       (concat ":var results="
-                                               (mapconcat #'identity
-                                                          (butlast lob-info)
-                                                          " ")))))
-                                    "" nil (car (last lob-info)))
-                              'lob)))
-                  (rep (org-fill-template
-                        org-babel-exp-call-line-template
-                        `(("line"  . ,(nth 0 lob-info))))))
-             (if inlinep
-                 (save-excursion
-                   (goto-char inline-start)
-                   (delete-region inline-start inline-end)
-                   (insert rep))
-               (replace-match rep t t)))))))))
+                                     (list
+                                      (org-babel-parse-header-arguments
+                                       (org-no-properties
+                                        (concat
+                                         ":var results="
+                                         (mapconcat 'identity
+                                                    (butlast lob-info 2)
+                                                    " ")))))))
+                             "" (nth 3 lob-info) (nth 2 lob-info))
+                       'lob))
+                     (rep (org-fill-template
+                           org-babel-exp-call-line-template
+                           `(("line"  . ,(nth 0 lob-info))))))
+                ;; If replacement is empty, completely remove the
+                ;; object/element, including any extra white space
+                ;; that might have been created when including
+                ;; results.
+                (if (equal rep "")
+                    (delete-region
+                     begin
+                     (progn (goto-char end)
+                            (if (not (eq type 'babel-call))
+                                (progn (skip-chars-forward " \t") (point))
+                              (skip-chars-forward " \r\t\n")
+                              (line-beginning-position))))
+                  ;; Otherwise, preserve following white
+                  ;; spaces/newlines and then, insert replacement
+                  ;; string.
+                  (goto-char begin)
+                  (delete-region begin end)
+                  (insert rep))))
+             (src-block
+              (let* ((match-start (copy-marker (match-beginning 0)))
+                     (ind (org-get-indentation))
+                     (headers
+                      (cons
+                       (org-element-property :language element)
+                       (let ((params (org-element-property :parameters
+                                                           element)))
+                         (and params (org-split-string params "[ \t]+"))))))
+                ;; Take care of matched block: compute replacement
+                ;; string.  In particular, a nil REPLACEMENT means
+                ;; the block should be left as-is while an empty
+                ;; string should remove the block.
+                (let ((replacement (progn (goto-char match-start)
+                                          (org-babel-exp-src-block headers))))
+                  (cond ((not replacement) (goto-char end))
+                        ((equal replacement "")
+                         (goto-char end)
+                         (skip-chars-forward " \r\t\n")
+                         (beginning-of-line)
+                         (delete-region begin (point)))
+                        (t
+                         (goto-char match-start)
+                         (delete-region (point)
+                                        (save-excursion (goto-char end)
+                                                        (line-end-position)))
+                         (insert replacement)
+                         (if (or org-src-preserve-indentation
+                                 (org-element-property :preserve-indent
+                                                       element))
+                             ;; Indent only the code block markers.
+                             (save-excursion (skip-chars-backward " \r\t\n")
+                                             (indent-line-to ind)
+                                             (goto-char match-start)
+                                             (indent-line-to ind))
+                           ;; Indent everything.
+                           (indent-rigidly match-start (point) ind)))))
+                (set-marker match-start nil))))
+           (set-marker begin nil)
+           (set-marker end nil)))))))
 
 (defun org-babel-in-example-or-verbatim ()
   "Return true if point is in example or verbatim code.
@@ -239,7 +312,7 @@ The function respects the value of the :exports header argument."
             (org-babel-exp-code info)))))
 
 (defcustom org-babel-exp-code-template
-  "#+BEGIN_SRC %lang%flags\n%body\n#+END_SRC"
+  "#+BEGIN_SRC %lang%switches%flags\n%body\n#+END_SRC"
   "Template used to export the body of code blocks.
 This template may be customized to include additional information
 such as the code block name, or the values of particular header
@@ -249,6 +322,7 @@ and the following %keys may be used.
  lang ------ the language of the code block
  name ------ the name of the code block
  body ------ the body of the code block
+ switches -- the switches associated to the code block
  flags ----- the flags passed to the code block
 
 In addition to the keys mentioned above, every header argument
@@ -270,14 +344,15 @@ replaced with its value."
   (org-fill-template
    org-babel-exp-code-template
    `(("lang"  . ,(nth 0 info))
-     ("body"  . ,(if (string= (nth 0 info) "org")
-                    (replace-regexp-in-string "^" "," (nth 1 info))
-                  (nth 1 info)))
+     ("body"  . ,(org-escape-code-in-string (nth 1 info)))
+     ("switches" . ,(let ((f (nth 3 info)))
+                     (and (org-string-nw-p f) (concat " " f))))
+     ("flags" . ,(let ((f (assq :flags (nth 2 info))))
+                  (and f (concat " " (cdr f)))))
      ,@(mapcar (lambda (pair)
                 (cons (substring (symbol-name (car pair)) 1)
                       (format "%S" (cdr pair))))
               (nth 2 info))
-     ("flags" . ,((lambda (f) (when f (concat " " f))) (nth 3 info)))
      ("name"  . ,(or (nth 4 info) "")))))
 
 (defun org-babel-exp-results (info type &optional silent hash)
@@ -286,14 +361,17 @@ Results are prepared in a manner suitable for export by org-mode.
 This function is called by `org-babel-exp-do-export'.  The code
 block will be evaluated.  Optional argument SILENT can be used to
 inhibit insertion of results into the buffer."
-  (when (and org-export-babel-evaluate
+  (when (and (or (eq org-export-babel-evaluate t)
+                (and (eq type 'inline)
+                     (eq org-export-babel-evaluate 'inline-only)))
             (not (and hash (equal hash (org-babel-current-result-hash)))))
     (let ((lang (nth 0 info))
          (body (if (org-babel-noweb-p (nth 2 info) :eval)
                    (org-babel-expand-noweb-references
                     info (org-babel-exp-get-export-buffer))
                  (nth 1 info)))
-         (info (copy-sequence info)))
+         (info (copy-sequence info))
+         (org-babel-current-src-block-location (point-marker)))
       ;; skip code blocks which we can't evaluate
       (when (fboundp (intern (concat "org-babel-execute:" lang)))
        (org-babel-eval-wipe-error-buffer)
@@ -319,10 +397,10 @@ inhibit insertion of results into the buffer."
           ((equal type 'lob)
            (save-excursion
              (re-search-backward org-babel-lob-one-liner-regexp nil t)
-             (org-babel-execute-src-block nil info)))))))))
-
-(provide 'ob-exp)
+             (let (org-confirm-babel-evaluate)
+               (org-babel-execute-src-block nil info))))))))))
 
 
+(provide 'ob-exp)
 
 ;;; ob-exp.el ends here