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Diffstat (limited to 'lisp/org/ob.el')
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diff --git a/lisp/org/ob.el b/lisp/org/ob.el new file mode 100644 index 00000000000..1c9f9fdbc12 --- /dev/null +++ b/lisp/org/ob.el @@ -0,0 +1,1968 @@ +;;; ob.el --- working with code blocks in org-mode + +;; Copyright (C) 2009, 2010 Free Software Foundation, Inc. + +;; Author: Eric Schulte, Dan Davison +;; Keywords: literate programming, reproducible research +;; Homepage: http://orgmode.org +;; Version: 7.4 + +;; This file is part of GNU Emacs. + +;; GNU Emacs 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. + +;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>. + +;;; Commentary: + +;; See the online documentation for more information +;; +;; http://orgmode.org/worg/org-contrib/babel/ + +;;; Code: +(eval-when-compile + (require 'org-list) + (require 'cl)) +(require 'ob-eval) +(require 'org-macs) + +(defvar org-babel-call-process-region-original) +(declare-function show-all "outline" ()) +(declare-function tramp-compat-make-temp-file "tramp-compat" + (filename &optional dir-flag)) +(declare-function tramp-dissect-file-name "tramp" (name &optional nodefault)) +(declare-function tramp-file-name-user "tramp" (vec)) +(declare-function tramp-file-name-host "tramp" (vec)) +(declare-function with-parsed-tramp-file-name "tramp" (filename var &rest body)) +(declare-function org-icompleting-read "org" (&rest args)) +(declare-function org-edit-src-code "org-src" + (&optional context code edit-buffer-name quietp)) +(declare-function org-edit-src-exit "org-src" (&optional context)) +(declare-function org-open-at-point "org" (&optional in-emacs reference-buffer)) +(declare-function org-save-outline-visibility "org" (use-markers &rest body)) +(declare-function org-outline-overlay-data "org" (&optional use-markers)) +(declare-function org-set-outline-overlay-data "org" (data)) +(declare-function org-narrow-to-subtree "org" ()) +(declare-function org-entry-get "org" + (pom property &optional inherit literal-nil)) +(declare-function org-make-options-regexp "org" (kwds &optional extra)) +(declare-function org-do-remove-indentation "org" (&optional n)) +(declare-function org-show-context "org" (&optional key)) +(declare-function org-at-table-p "org" (&optional table-type)) +(declare-function org-cycle "org" (&optional arg)) +(declare-function org-uniquify "org" (list)) +(declare-function org-current-level "org" ()) +(declare-function org-table-import "org-table" (file arg)) +(declare-function org-add-hook "org-compat" + (hook function &optional append local)) +(declare-function org-table-align "org-table" ()) +(declare-function org-table-end "org-table" (&optional table-type)) +(declare-function orgtbl-to-generic "org-table" (table params)) +(declare-function orgtbl-to-orgtbl "org-table" (table params)) +(declare-function org-babel-lob-get-info "ob-lob" nil) +(declare-function org-babel-ref-split-args "ob-ref" (arg-string)) +(declare-function org-babel-ref-parse "ob-ref" (assignment)) +(declare-function org-babel-ref-resolve "ob-ref" (ref)) +(declare-function org-babel-lob-execute-maybe "ob-lob" ()) +(declare-function org-number-sequence "org-compat" (from &optional to inc)) +(declare-function org-in-item-p "org-list" ()) +(declare-function org-list-parse-list "org-list" (&optional delete)) +(declare-function org-list-to-generic "org-list" (LIST PARAMS)) +(declare-function org-list-bottom-point "org-list" ()) + +(defgroup org-babel nil + "Code block evaluation and management in `org-mode' documents." + :tag "Babel" + :group 'org) + +(defcustom org-confirm-babel-evaluate t + "Confirm before evaluation. +Require confirmation before interactively evaluating code +blocks in Org-mode buffers. The default value of this variable +is t, meaning confirmation is required for any code block +evaluation. This variable can be set to nil to inhibit any +future confirmation requests. This variable can also be set to a +function which takes two arguments the language of the code block +and the body of the code block. Such a function should then +return a non-nil value if the user should be prompted for +execution or nil if no prompt is required. + +Warning: Disabling confirmation may result in accidental +evaluation of potentially harmful code. It may be advisable +remove code block execution from C-c C-c as further protection +against accidental code block evaluation. The +`org-babel-no-eval-on-ctrl-c-ctrl-c' variable can be used to +remove code block execution from the C-c C-c keybinding." + :group 'org-babel + :type '(choice boolean function)) +;; don't allow this variable to be changed through file settings +(put 'org-confirm-babel-evaluate 'safe-local-variable (lambda (x) (eq x t))) + +(defcustom org-babel-no-eval-on-ctrl-c-ctrl-c nil + "Remove code block evaluation from the C-c C-c key binding." + :group 'org-babel + :type 'boolean) + +(defvar org-babel-src-name-regexp + "^[ \t]*#\\+\\(srcname\\|source\\|function\\):[ \t]*" + "Regular expression used to match a source name line.") + +(defvar org-babel-multi-line-header-regexp + "^[ \t]*#\\+headers?:[ \t]*\\([^\n]*\\)$" + "Regular expression used to match multi-line header arguments.") + +(defvar org-babel-src-name-w-name-regexp + (concat org-babel-src-name-regexp + "\\(" + org-babel-multi-line-header-regexp + "\\)*" + "\\([^ ()\f\t\n\r\v]+\\)\\(\(\\(.*\\)\)\\|\\)") + "Regular expression matching source name lines with a name.") + +(defvar org-babel-src-block-regexp + (concat + ;; (1) indentation (2) lang + "^\\([ \t]*\\)#\\+begin_src[ \t]+\\([^ \f\t\n\r\v]+\\)[ \t]*" + ;; (3) switches + "\\([^\":\n]*\"[^\"\n*]*\"[^\":\n]*\\|[^\":\n]*\\)" + ;; (4) header arguments + "\\([^\n]*\\)\n" + ;; (5) body + "\\([^\000]+?\n\\)[ \t]*#\\+end_src") + "Regexp used to identify code blocks.") + +(defvar org-babel-inline-src-block-regexp + (concat + ;; (1) replacement target (2) lang + "[ \f\t\n\r\v]\\(src_\\([^ \f\t\n\r\v]+\\)" + ;; (3,4) (unused, headers) + "\\(\\|\\[\\(.*?\\)\\]\\)" + ;; (5) body + "{\\([^\f\n\r\v]+?\\)}\\)") + "Regexp used to identify inline src-blocks.") + +(defun org-babel-get-header (params key &optional others) + "Select only header argument of type KEY from a list. +Optional argument OTHERS indicates that only the header that do +not match KEY should be returned." + (delq nil + (mapcar + (lambda (p) (when (funcall (if others #'not #'identity) (eq (car p) key)) p)) + params))) + +(defun org-babel-get-src-block-info (&optional light) + "Get information on the current source block. + +Optional argument LIGHT does not resolve remote variable +references; a process which could likely result in the execution +of other code blocks. + +Returns a list + (language body header-arguments-alist switches name indent)." + (let ((case-fold-search t) head info name indent) + ;; full code block + (if (setq head (org-babel-where-is-src-block-head)) + (save-excursion + (goto-char head) + (setq info (org-babel-parse-src-block-match)) + (setq indent (car (last info))) + (setq info (butlast info)) + (while (and (forward-line -1) + (looking-at org-babel-multi-line-header-regexp)) + (setf (nth 2 info) + (org-babel-merge-params + (org-babel-parse-header-arguments (match-string 1)) + (nth 2 info)))) + (when (looking-at org-babel-src-name-w-name-regexp) + (setq name (org-babel-clean-text-properties (match-string 4))) + (when (match-string 6) + (setf (nth 2 info) ;; merge functional-syntax vars and header-args + (org-babel-merge-params + (mapcar (lambda (ref) (cons :var ref)) + (org-babel-ref-split-args (match-string 6))) + (nth 2 info)))))) + ;; inline source block + (when (save-excursion (re-search-backward "[ \f\t\n\r\v]" nil t) + (looking-at org-babel-inline-src-block-regexp)) + (setq info (org-babel-parse-inline-src-block-match)))) + ;; resolve variable references and add summary parameters + (when (and info (not light)) + (setf (nth 2 info) (org-babel-process-params (nth 2 info)))) + (when info (append info (list name indent))))) + +(defun org-babel-confirm-evaluate (info) + "Confirm evaluation of the code block INFO. +This behavior can be suppressed by setting the value of +`org-confirm-babel-evaluate' to nil, in which case all future +interactive code block evaluations will proceed without any +confirmation from the user. + +Note disabling confirmation may result in accidental evaluation +of potentially harmful code." + (let* ((eval (or (cdr (assoc :eval (nth 2 info))) + (when (assoc :noeval (nth 2 info)) "no"))) + (query (or (equal eval "query") + (if (functionp org-confirm-babel-evaluate) + (funcall org-confirm-babel-evaluate + (nth 0 info) (nth 1 info)) + org-confirm-babel-evaluate)))) + (if (or (equal eval "never") (equal eval "no") + (and query + (not (yes-or-no-p + (format "Evaluate this%scode block%son your system? " + (if info (format " %s " (nth 0 info)) " ") + (if (nth 4 info) + (format " (%s) " (nth 4 info)) " ")))))) + (prog1 nil (message "Evaluation %s" + (if (or (equal eval "never") (equal eval "no")) + "Disabled" "Aborted"))) + t))) + +;;;###autoload +(defun org-babel-execute-safely-maybe () + (unless org-babel-no-eval-on-ctrl-c-ctrl-c + (org-babel-execute-maybe))) + +(add-hook 'org-ctrl-c-ctrl-c-hook 'org-babel-execute-safely-maybe) + +;;;###autoload +(defun org-babel-execute-maybe () + (interactive) + (or (org-babel-execute-src-block-maybe) + (org-babel-lob-execute-maybe))) + +(defun org-babel-execute-src-block-maybe () + "Conditionally execute a source block. +Detect if this is context for a Babel src-block and if so +then run `org-babel-execute-src-block'." + (interactive) + (let ((info (org-babel-get-src-block-info))) + (if info + (progn (org-babel-eval-wipe-error-buffer) + (org-babel-execute-src-block current-prefix-arg info) t) nil))) + +;;;###autoload +(defun org-babel-expand-src-block-maybe () + "Conditionally expand a source block. +Detect if this is context for a org-babel src-block and if so +then run `org-babel-expand-src-block'." + (interactive) + (let ((info (org-babel-get-src-block-info))) + (if info + (progn (org-babel-expand-src-block current-prefix-arg info) t) + nil))) + +;;;###autoload +(defun org-babel-load-in-session-maybe () + "Conditionally load a source block in a session. +Detect if this is context for a org-babel src-block and if so +then run `org-babel-load-in-session'." + (interactive) + (let ((info (org-babel-get-src-block-info))) + (if info + (progn (org-babel-load-in-session current-prefix-arg info) t) + nil))) + +(add-hook 'org-metaup-hook 'org-babel-load-in-session-maybe) + +;;;###autoload +(defun org-babel-pop-to-session-maybe () + "Conditionally pop to a session. +Detect if this is context for a org-babel src-block and if so +then run `org-babel-pop-to-session'." + (interactive) + (let ((info (org-babel-get-src-block-info))) + (if info (progn (org-babel-pop-to-session current-prefix-arg info) t) nil))) + +(add-hook 'org-metadown-hook 'org-babel-pop-to-session-maybe) + +(defconst org-babel-header-arg-names + '(cache cmdline colnames dir exports file noweb results + session tangle var eval noeval comments) + "Common header arguments used by org-babel. +Note that individual languages may define their own language +specific header arguments as well.") + +(defvar org-babel-default-header-args + '((:session . "none") (:results . "replace") (:exports . "code") + (:cache . "no") (:noweb . "no") (:hlines . "no") (:tangle . "no")) + "Default arguments to use when evaluating a source block.") + +(defvar org-babel-default-inline-header-args + '((:session . "none") (:results . "silent") (:exports . "results")) + "Default arguments to use when evaluating an inline source block.") + +(defvar org-babel-current-buffer-properties nil + "Local cache for buffer properties.") +(make-variable-buffer-local 'org-babel-current-buffer-properties) + +(defvar org-babel-result-regexp + "^[ \t]*#\\+res\\(ults\\|name\\)\\(\\[\\([[:alnum:]]+\\)\\]\\)?\\:[ \t]*" + "Regular expression used to match result lines. +If the results are associated with a hash key then the hash will +be saved in the second match data.") + +(defvar org-babel-result-w-name-regexp + (concat org-babel-result-regexp + "\\([^ ()\f\t\n\r\v]+\\)\\(\(\\(.*\\)\)\\|\\)")) + +(defvar org-babel-min-lines-for-block-output 10 + "The minimum number of lines for block output. +If number of lines of output is equal to or exceeds this +value, the output is placed in a #+begin_example...#+end_example +block. Otherwise the output is marked as literal by inserting +colons at the starts of the lines. This variable only takes +effect if the :results output option is in effect.") + +(defvar org-babel-noweb-error-langs nil + "Languages for which Babel will raise literate programming errors. +List of languages for which errors should be raised when the +source code block satisfying a noweb reference in this language +can not be resolved.") + +(defvar org-babel-hash-show 4 + "Number of initial characters to show of a hidden results hash.") + +(defvar org-babel-after-execute-hook nil + "Hook for functions to be called after `org-babel-execute-src-block'") +(defun org-babel-named-src-block-regexp-for-name (name) + "This generates a regexp used to match a src block named NAME." + (concat org-babel-src-name-regexp (regexp-quote name) "[ \t\n]*" + (substring org-babel-src-block-regexp 1))) + +;;; functions +(defvar call-process-region) +;;;###autoload + +(defun org-babel-execute-src-block (&optional arg info params) + "Execute the current source code block. +Insert the results of execution into the buffer. Source code +execution and the collection and formatting of results can be +controlled through a variety of header arguments. + +With prefix argument ARG, force re-execution even if a an +existing result cached in the buffer would otherwise have been +returned. + +Optionally supply a value for INFO in the form returned by +`org-babel-get-src-block-info'. + +Optionally supply a value for PARAMS which will be merged with +the header arguments specified at the front of the source code +block." + (interactive) + (let ((info (or info (org-babel-get-src-block-info)))) + (when (org-babel-confirm-evaluate info) + (let* ((lang (nth 0 info)) + (params (if params + (org-babel-process-params + (org-babel-merge-params (nth 2 info) params)) + (nth 2 info))) + (cache? (and (not arg) (cdr (assoc :cache params)) + (string= "yes" (cdr (assoc :cache params))))) + (result-params (cdr (assoc :result-params params))) + (new-hash (when cache? (org-babel-sha1-hash info))) + (old-hash (when cache? (org-babel-result-hash info))) + (body (setf (nth 1 info) + (let ((noweb (cdr (assoc :noweb params)))) + (if (and noweb + (or (string= "yes" noweb) + (string= "tangle" noweb))) + (org-babel-expand-noweb-references info) + (nth 1 info))))) + (cmd (intern (concat "org-babel-execute:" lang))) + (dir (cdr (assoc :dir params))) + (default-directory + (or (and dir (file-name-as-directory dir)) default-directory)) + (org-babel-call-process-region-original + (if (boundp 'org-babel-call-process-region-original) + org-babel-call-process-region-original + (symbol-function 'call-process-region))) + (indent (car (last info))) + result) + (unwind-protect + (flet ((call-process-region (&rest args) + (apply 'org-babel-tramp-handle-call-process-region args))) + (unless (fboundp cmd) + (error "No org-babel-execute function for %s!" lang)) + (if (and (not arg) new-hash (equal new-hash old-hash)) + (save-excursion ;; return cached result + (goto-char (org-babel-where-is-src-block-result nil info)) + (end-of-line 1) (forward-char 1) + (setq result (org-babel-read-result)) + (message (replace-regexp-in-string + "%" "%%" (format "%S" result))) result) + (message "executing %s code block%s..." + (capitalize lang) + (if (nth 4 info) (format " (%s)" (nth 4 info)) "")) + (setq result + ((lambda (result) + (cond + ((member "file" result-params) + (cdr (assoc :file params))) + ((and (eq (cdr (assoc :result-type params)) 'value) + (or (member "vector" result-params) + (member "table" result-params)) + (not (listp result))) + (list (list result))) + (t result))) + (funcall cmd body params))) + (org-babel-insert-result + result result-params info new-hash indent lang) + (run-hooks 'org-babel-after-execute-hook) + result)) + (setq call-process-region 'org-babel-call-process-region-original)))))) + +(defun org-babel-expand-body:generic (body params &optional var-lines) + "Expand BODY with PARAMS. +Expand a block of code with org-babel according to it's header +arguments. This generic implementation of body expansion is +called for languages which have not defined their own specific +org-babel-expand-body:lang function." + (mapconcat #'identity (append var-lines (list body)) "\n")) + +;;;###autoload +(defun org-babel-expand-src-block (&optional arg info params) + "Expand the current source code block. +Expand according to the source code block's header +arguments and pop open the results in a preview buffer." + (interactive) + (let* ((info (or info (org-babel-get-src-block-info))) + (lang (nth 0 info)) + (params (setf (nth 2 info) + (sort (org-babel-merge-params (nth 2 info) params) + (lambda (el1 el2) (string< (symbol-name (car el1)) + (symbol-name (car el2))))))) + (body (setf (nth 1 info) + (if (and (cdr (assoc :noweb params)) + (string= "yes" (cdr (assoc :noweb params)))) + (org-babel-expand-noweb-references info) (nth 1 info)))) + (expand-cmd (intern (concat "org-babel-expand-body:" lang))) + (assignments-cmd (intern (concat "org-babel-variable-assignments:" lang))) + (expanded + (if (fboundp expand-cmd) (funcall expand-cmd body params) + (org-babel-expand-body:generic + body params (and (fboundp assignments-cmd) (funcall assignments-cmd params)))))) + (org-edit-src-code + nil expanded (concat "*Org-Babel Preview " (buffer-name) "[ " lang " ]*")))) + +;;;###autoload +(defun org-babel-load-in-session (&optional arg info) + "Load the body of the current source-code block. +Evaluate the header arguments for the source block before +entering the session. After loading the body this pops open the +session." + (interactive) + (let* ((info (or info (org-babel-get-src-block-info))) + (lang (nth 0 info)) + (params (nth 2 info)) + (body (setf (nth 1 info) + (if (and (cdr (assoc :noweb params)) + (string= "yes" (cdr (assoc :noweb params)))) + (org-babel-expand-noweb-references info) + (nth 1 info)))) + (session (cdr (assoc :session params))) + (dir (cdr (assoc :dir params))) + (default-directory + (or (and dir (file-name-as-directory dir)) default-directory)) + (cmd (intern (concat "org-babel-load-session:" lang)))) + (unless (fboundp cmd) + (error "No org-babel-load-session function for %s!" lang)) + (pop-to-buffer (funcall cmd session body params)) + (end-of-line 1))) + +;;;###autoload +(defun org-babel-initiate-session (&optional arg info) + "Initiate session for current code block. +If called with a prefix argument then resolve any variable +references in the header arguments and assign these variables in +the session. Copy the body of the code block to the kill ring." + (interactive "P") + (let* ((info (or info (org-babel-get-src-block-info (not arg)))) + (lang (nth 0 info)) + (body (nth 1 info)) + (params (nth 2 info)) + (session (cdr (assoc :session params))) + (dir (cdr (assoc :dir params))) + (default-directory + (or (and dir (file-name-as-directory dir)) default-directory)) + (init-cmd (intern (format "org-babel-%s-initiate-session" lang))) + (prep-cmd (intern (concat "org-babel-prep-session:" lang)))) + (if (and (stringp session) (string= session "none")) + (error "This block is not using a session!")) + (unless (fboundp init-cmd) + (error "No org-babel-initiate-session function for %s!" lang)) + (with-temp-buffer (insert (org-babel-trim body)) + (copy-region-as-kill (point-min) (point-max))) + (when arg + (unless (fboundp prep-cmd) + (error "No org-babel-prep-session function for %s!" lang)) + (funcall prep-cmd session params)) + (funcall init-cmd session params))) + +;;;###autoload +(defun org-babel-switch-to-session (&optional arg info) + "Switch to the session of the current code block. +Uses `org-babel-initiate-session' to start the session. If called +with a prefix argument then this is passed on to +`org-babel-initiate-session'." + (interactive "P") + (pop-to-buffer (org-babel-initiate-session arg info)) + (end-of-line 1)) + +(defalias 'org-babel-pop-to-session 'org-babel-switch-to-session) + +;;;###autoload +(defun org-babel-switch-to-session-with-code (&optional arg info) + "Switch to code buffer and display session." + (interactive "P") + (flet ((swap-windows + () + (let ((other-window-buffer (window-buffer (next-window)))) + (set-window-buffer (next-window) (current-buffer)) + (set-window-buffer (selected-window) other-window-buffer)) + (other-window 1))) + (let ((info (org-babel-get-src-block-info)) + (org-src-window-setup 'reorganize-frame)) + (save-excursion + (org-babel-switch-to-session arg info)) + (org-edit-src-code)) + (swap-windows))) + +(defmacro org-babel-do-in-edit-buffer (&rest body) + "Evaluate BODY in edit buffer if there is a code block at point. +Return t if a code block was found at point, nil otherwise." + `(let ((org-src-window-setup 'switch-invisibly)) + (when (and (org-babel-where-is-src-block-head) + (org-edit-src-code nil nil nil 'quietly)) + (unwind-protect (progn ,@body) + (if (org-bound-and-true-p org-edit-src-from-org-mode) + (org-edit-src-exit))) + t))) + +(defun org-babel-do-key-sequence-in-edit-buffer (key) + "Read key sequence and execute the command in edit buffer. +Enter a key sequence to be executed in the language major-mode +edit buffer. For example, TAB will alter the contents of the +Org-mode code block according to the effect of TAB in the +language major-mode buffer. For languages that support +interactive sessions, this can be used to send code from the Org +buffer to the session for evaluation using the native major-mode +evaluation mechanisms." + (interactive "kEnter key-sequence to execute in edit buffer: ") + (org-babel-do-in-edit-buffer + (call-interactively + (key-binding (or key (read-key-sequence nil)))))) + +(defvar org-bracket-link-regexp) +;;;###autoload +(defun org-babel-open-src-block-result (&optional re-run) + "If `point' is on a src block then open the results of the +source code block, otherwise return nil. With optional prefix +argument RE-RUN the source-code block is evaluated even if +results already exist." + (interactive "P") + (when (org-babel-get-src-block-info) + (save-excursion + ;; go to the results, if there aren't any then run the block + (goto-char (or (and (not re-run) (org-babel-where-is-src-block-result)) + (progn (org-babel-execute-src-block) + (org-babel-where-is-src-block-result)))) + (end-of-line 1) + (while (looking-at "[\n\r\t\f ]") (forward-char 1)) + ;; open the results + (if (looking-at org-bracket-link-regexp) + ;; file results + (org-open-at-point) + (let ((results (org-babel-read-result))) + (flet ((echo-res (result) + (if (stringp result) result (format "%S" result)))) + (pop-to-buffer (get-buffer-create "org-babel-results")) + (delete-region (point-min) (point-max)) + (if (listp results) + ;; table result + (insert (orgtbl-to-generic results '(:sep "\t" :fmt echo-res))) + ;; scalar result + (insert (echo-res results)))))) + t))) + +;;;###autoload +(defmacro org-babel-map-src-blocks (file &rest body) + "Evaluate BODY forms on each source-block in FILE. +If FILE is nil evaluate BODY forms on source blocks in current +buffer. During evaluation of BODY the following local variables +are set relative to the currently matched code block. + +full-block ------- string holding the entirety of the code block +beg-block -------- point at the beginning of the code block +end-block -------- point at the end of the matched code block +lang ------------- string holding the language of the code block +beg-lang --------- point at the beginning of the lang +end-lang --------- point at the end of the lang +switches --------- string holding the switches +beg-switches ----- point at the beginning of the switches +end-switches ----- point at the end of the switches +header-args ------ string holding the header-args +beg-header-args -- point at the beginning of the header-args +end-header-args -- point at the end of the header-args +body ------------- string holding the body of the code block +beg-body --------- point at the beginning of the body +end-body --------- point at the end of the body" + (declare (indent 1)) + (let ((tempvar (make-symbol "file"))) + `(let* ((,tempvar ,file) + (visited-p (or (null ,tempvar) + (get-file-buffer (expand-file-name ,tempvar)))) + (point (point)) to-be-removed) + (save-window-excursion + (when ,tempvar (find-file ,tempvar)) + (setq to-be-removed (current-buffer)) + (goto-char (point-min)) + (while (re-search-forward org-babel-src-block-regexp nil t) + (goto-char (match-beginning 0)) + (let ((full-block (match-string 0)) + (beg-block (match-beginning 0)) + (end-block (match-end 0)) + (lang (match-string 2)) + (beg-lang (match-beginning 2)) + (end-lang (match-end 2)) + (switches (match-string 3)) + (beg-switches (match-beginning 3)) + (end-switches (match-end 3)) + (header-args (match-string 4)) + (beg-header-args (match-beginning 4)) + (end-header-args (match-end 4)) + (body (match-string 5)) + (beg-body (match-beginning 5)) + (end-body (match-end 5))) + ,@body + (goto-char end-block)))) + (unless visited-p (kill-buffer to-be-removed)) + (goto-char point)))) + +;;;###autoload +(defun org-babel-execute-buffer (&optional arg) + "Execute source code blocks in a buffer. +Call `org-babel-execute-src-block' on every source block in +the current buffer." + (interactive "P") + (org-save-outline-visibility t + (org-babel-map-src-blocks nil + (org-babel-execute-src-block arg)))) + +;;;###autoload +(defun org-babel-execute-subtree (&optional arg) + "Execute source code blocks in a subtree. +Call `org-babel-execute-src-block' on every source block in +the current subtree." + (interactive "P") + (save-restriction + (save-excursion + (org-narrow-to-subtree) + (org-babel-execute-buffer arg) + (widen)))) + +;;;###autoload +(defun org-babel-sha1-hash (&optional info) + "Generate an sha1 hash based on the value of info." + (interactive) + (let ((print-level nil) + (info (or info (org-babel-get-src-block-info)))) + (setf (nth 2 info) + (sort (copy-sequence (nth 2 info)) + (lambda (a b) (string< (car a) (car b))))) + (let ((hash (sha1 + (format "%s-%s" + (mapconcat + #'identity + (delq nil + (mapcar + (lambda (arg) + (let ((v (cdr arg))) + (when (and v (not (and (sequencep v) + (not (consp v)) + (= (length v) 0)))) + (format "%S" v)))) + (nth 2 info))) ":") + (nth 1 info))))) + (when (interactive-p) (message hash)) + hash))) + +(defun org-babel-result-hash (&optional info) + "Return the in-buffer hash associated with INFO." + (org-babel-where-is-src-block-result nil info) + (org-babel-clean-text-properties (match-string 3))) + +(defun org-babel-hide-hash () + "Hide the hash in the current results line. +Only the initial `org-babel-hash-show' characters of the hash +will remain visible." + (add-to-invisibility-spec '(org-babel-hide-hash . t)) + (save-excursion + (when (and (re-search-forward org-babel-result-regexp nil t) + (match-string 3)) + (let* ((start (match-beginning 3)) + (hide-start (+ org-babel-hash-show start)) + (end (match-end 3)) + (hash (match-string 3)) + ov1 ov2) + (setq ov1 (make-overlay start hide-start)) + (setq ov2 (make-overlay hide-start end)) + (overlay-put ov2 'invisible 'org-babel-hide-hash) + (overlay-put ov1 'babel-hash hash))))) + +(defun org-babel-hide-all-hashes () + "Hide the hash in the current buffer. +Only the initial `org-babel-hash-show' characters of each hash +will remain visible. This function should be called as part of +the `org-mode-hook'." + (save-excursion + (while (re-search-forward org-babel-result-regexp nil t) + (goto-char (match-beginning 0)) + (org-babel-hide-hash) + (goto-char (match-end 0))))) +(add-hook 'org-mode-hook 'org-babel-hide-all-hashes) + +(defun org-babel-hash-at-point (&optional point) + "Return the value of the hash at POINT. +The hash is also added as the last element of the kill ring. +This can be called with C-c C-c." + (interactive) + (let ((hash (car (delq nil (mapcar + (lambda (ol) (overlay-get ol 'babel-hash)) + (overlays-at (or point (point)))))))) + (when hash (kill-new hash) (message hash)))) +(add-hook 'org-ctrl-c-ctrl-c-hook 'org-babel-hash-at-point) + +(defun org-babel-result-hide-spec () + "Hide portions of results lines. +Add `org-babel-hide-result' as an invisibility spec for hiding +portions of results lines." + (add-to-invisibility-spec '(org-babel-hide-result . t))) +(add-hook 'org-mode-hook 'org-babel-result-hide-spec) + +(defvar org-babel-hide-result-overlays nil + "Overlays hiding results.") + +(defun org-babel-result-hide-all () + "Fold all results in the current buffer." + (interactive) + (org-babel-show-result-all) + (save-excursion + (while (re-search-forward org-babel-result-regexp nil t) + (save-excursion (goto-char (match-beginning 0)) + (org-babel-hide-result-toggle-maybe))))) + +(defun org-babel-show-result-all () + "Unfold all results in the current buffer." + (mapc 'delete-overlay org-babel-hide-result-overlays) + (setq org-babel-hide-result-overlays nil)) + +;;;###autoload +(defun org-babel-hide-result-toggle-maybe () + "Toggle visibility of result at point." + (interactive) + (let ((case-fold-search t)) + (if (save-excursion + (beginning-of-line 1) + (looking-at org-babel-result-regexp)) + (progn (org-babel-hide-result-toggle) + t) ;; to signal that we took action + nil))) ;; to signal that we did not + +(defun org-babel-hide-result-toggle (&optional force) + "Toggle the visibility of the current result." + (interactive) + (save-excursion + (beginning-of-line) + (if (re-search-forward org-babel-result-regexp nil t) + (let ((start (progn (beginning-of-line 2) (- (point) 1))) + (end (progn (goto-char (- (org-babel-result-end) 1)) (point))) + ov) + (if (memq t (mapcar (lambda (overlay) + (eq (overlay-get overlay 'invisible) + 'org-babel-hide-result)) + (overlays-at start))) + (if (or (not force) (eq force 'off)) + (mapc (lambda (ov) + (when (member ov org-babel-hide-result-overlays) + (setq org-babel-hide-result-overlays + (delq ov org-babel-hide-result-overlays))) + (when (eq (overlay-get ov 'invisible) + 'org-babel-hide-result) + (delete-overlay ov))) + (overlays-at start))) + (setq ov (make-overlay start end)) + (overlay-put ov 'invisible 'org-babel-hide-result) + ;; make the block accessible to isearch + (overlay-put + ov 'isearch-open-invisible + (lambda (ov) + (when (member ov org-babel-hide-result-overlays) + (setq org-babel-hide-result-overlays + (delq ov org-babel-hide-result-overlays))) + (when (eq (overlay-get ov 'invisible) + 'org-babel-hide-result) + (delete-overlay ov)))) + (push ov org-babel-hide-result-overlays))) + (error "Not looking at a result line")))) + +;; org-tab-after-check-for-cycling-hook +(add-hook 'org-tab-first-hook 'org-babel-hide-result-toggle-maybe) +;; Remove overlays when changing major mode +(add-hook 'org-mode-hook + (lambda () (org-add-hook 'change-major-mode-hook + 'org-babel-show-result-all 'append 'local))) + +(defvar org-file-properties) +(defun org-babel-params-from-properties (&optional lang) + "Retrieve parameters specified as properties. +Return an association list of any source block params which +may be specified in the properties of the current outline entry." + (save-match-data + (let (val sym) + (delq nil + (mapcar + (lambda (header-arg) + (and (setq val + (or (condition-case nil + (org-entry-get (point) header-arg t) + (error nil)) + (cdr (assoc header-arg org-file-properties)))) + (cons (intern (concat ":" header-arg)) + (org-babel-read val)))) + (mapcar + 'symbol-name + (append + org-babel-header-arg-names + (progn + (setq sym (intern (concat "org-babel-header-arg-names:" lang))) + (and (boundp sym) (eval sym)))))))))) + +(defun org-babel-params-from-buffer () + "Retrieve per-buffer parameters. + Return an association list of any source block params which +may be specified at the top of the current buffer." + (or org-babel-current-buffer-properties + (setq org-babel-current-buffer-properties + (save-match-data + (save-excursion + (save-restriction + (widen) + (goto-char (point-min)) + (when (re-search-forward + (org-make-options-regexp (list "BABEL")) nil t) + (org-babel-parse-header-arguments + (org-match-string-no-properties 2))))))))) + +(defvar org-src-preserve-indentation) +(defun org-babel-parse-src-block-match () + "Parse the results from a match of the `org-babel-src-block-regexp'." + (let* ((block-indentation (length (match-string 1))) + (lang (org-babel-clean-text-properties (match-string 2))) + (lang-headers (intern (concat "org-babel-default-header-args:" lang))) + (switches (match-string 3)) + (body (org-babel-clean-text-properties (match-string 5))) + (preserve-indentation (or org-src-preserve-indentation + (string-match "-i\\>" switches)))) + (list lang + ;; get block body less properties, protective commas, and indentation + (with-temp-buffer + (save-match-data + (insert (org-babel-strip-protective-commas body)) + (unless preserve-indentation (org-do-remove-indentation)) + (buffer-string))) + (org-babel-merge-params + org-babel-default-header-args + (org-babel-params-from-buffer) + (org-babel-params-from-properties lang) + (if (boundp lang-headers) (eval lang-headers) nil) + (org-babel-parse-header-arguments + (org-babel-clean-text-properties (or (match-string 4) "")))) + switches + block-indentation))) + +(defun org-babel-parse-inline-src-block-match () + "Parse the results from a match of the `org-babel-inline-src-block-regexp'." + (let* ((lang (org-babel-clean-text-properties (match-string 2))) + (lang-headers (intern (concat "org-babel-default-header-args:" lang)))) + (list lang + (org-babel-strip-protective-commas + (org-babel-clean-text-properties (match-string 5))) + (org-babel-merge-params + org-babel-default-inline-header-args + (org-babel-params-from-buffer) + (org-babel-params-from-properties lang) + (if (boundp lang-headers) (eval lang-headers) nil) + (org-babel-parse-header-arguments + (org-babel-clean-text-properties (or (match-string 4) ""))))))) + +(defun org-babel-parse-header-arguments (arg-string) + "Parse a string of header arguments returning an alist." + (when (> (length arg-string) 0) + (delq nil + (mapcar + (lambda (arg) + (if (string-match + "\\([^ \f\t\n\r\v]+\\)[ \f\t\n\r\v]+\\([^ \f\t\n\r\v]+.*\\)" + arg) + (cons (intern (match-string 1 arg)) + (org-babel-read (org-babel-chomp (match-string 2 arg)))) + (cons (intern (org-babel-chomp arg)) nil))) + (let ((balance 0) (partial nil) (lst nil) (last 0)) + (mapc (lambda (ch) ; split on [] balanced instances of [ \t]: + (setq balance (+ balance + (cond ((equal 91 ch) 1) + ((equal 93 ch) -1) + (t 0)))) + (setq partial (cons ch partial)) + (when (and (= ch 58) (= balance 0) + (or (= last 32) (= last 9))) + (setq lst (cons (apply #'string (nreverse (cddr partial))) + lst)) + (setq partial (list ch))) + (setq last ch)) + (string-to-list arg-string)) + (nreverse (cons (apply #'string (nreverse partial)) lst))))))) + +(defun org-babel-process-params (params) + "Expand variables in PARAMS and add summary parameters." + (let* ((vars-and-names (org-babel-disassemble-tables + (mapcar (lambda (el) + (if (consp (cdr el)) + (cdr el) (org-babel-ref-parse (cdr el)))) + (org-babel-get-header params :var)) + (cdr (assoc :hlines params)) + (cdr (assoc :colnames params)) + (cdr (assoc :rownames params)))) + (result-params (append + (split-string (or (cdr (assoc :results params)) "")) + (cdr (assoc :result-params params))))) + (append + (mapcar (lambda (var) (cons :var var)) (car vars-and-names)) + (list + (cons :colname-names (cadr vars-and-names)) + (cons :rowname-names (caddr vars-and-names)) + (cons :result-params result-params) + (cons :result-type (cond ((member "output" result-params) 'output) + ((member "value" result-params) 'value) + (t 'value)))) + (org-babel-get-header params :var 'other)))) + +;; row and column names +(defun org-babel-del-hlines (table) + "Remove all 'hlines from TABLE." + (remove 'hline table)) + +(defun org-babel-get-colnames (table) + "Return the column names of TABLE. +Return a cons cell, the `car' of which contains the TABLE less +colnames, and the `cdr' of which contains a list of the column +names." + (if (equal 'hline (nth 1 table)) + (cons (cddr table) (car table)) + (cons (cdr table) (car table)))) + +(defun org-babel-get-rownames (table) + "Return the row names of TABLE. +Return a cons cell, the `car' of which contains the TABLE less +colnames, and the `cdr' of which contains a list of the column +names. Note: this function removes any hlines in TABLE." + (flet ((trans (table) (apply #'mapcar* #'list table))) + (let* ((width (apply 'max + (mapcar (lambda (el) (if (listp el) (length el) 0)) table))) + (table (trans (mapcar (lambda (row) + (if (not (equal row 'hline)) + row + (setq row '()) + (dotimes (n width) + (setq row (cons 'hline row))) + row)) + table)))) + (cons (mapcar (lambda (row) (if (equal (car row) 'hline) 'hline row)) + (trans (cdr table))) + (remove 'hline (car table)))))) + +(defun org-babel-put-colnames (table colnames) + "Add COLNAMES to TABLE if they exist." + (if colnames (apply 'list colnames 'hline table) table)) + +(defun org-babel-put-rownames (table rownames) + "Add ROWNAMES to TABLE if they exist." + (if rownames + (mapcar (lambda (row) + (if (listp row) + (cons (or (pop rownames) "") row) + row)) table) + table)) + +(defun org-babel-pick-name (names selector) + "Select one out of an alist of row or column names. +SELECTOR can be either a list of names in which case those names +will be returned directly, or an index into the list NAMES in +which case the indexed names will be return." + (if (listp selector) + selector + (when names + (if (and selector (symbolp selector) (not (equal t selector))) + (cdr (assoc selector names)) + (if (integerp selector) + (nth (- selector 1) names) + (cdr (car (last names)))))))) + +(defun org-babel-disassemble-tables (vars hlines colnames rownames) + "Parse tables for further processing. +Process the variables in VARS according to the HLINES, +ROWNAMES and COLNAMES header arguments. Return a list consisting +of the vars, cnames and rnames." + (let (cnames rnames) + (list + (mapcar + (lambda (var) + (when (listp (cdr var)) + (when (and (not (equal colnames "no")) + (or colnames (and (equal (nth 1 (cdr var)) 'hline) + (not (member 'hline (cddr (cdr var))))))) + (let ((both (org-babel-get-colnames (cdr var)))) + (setq cnames (cons (cons (car var) (cdr both)) + cnames)) + (setq var (cons (car var) (car both))))) + (when (and rownames (not (equal rownames "no"))) + (let ((both (org-babel-get-rownames (cdr var)))) + (setq rnames (cons (cons (car var) (cdr both)) + rnames)) + (setq var (cons (car var) (car both))))) + (when (and hlines (not (equal hlines "yes"))) + (setq var (cons (car var) (org-babel-del-hlines (cdr var)))))) + var) + vars) + cnames rnames))) + +(defun org-babel-reassemble-table (table colnames rownames) + "Add column and row names to a table. +Given a TABLE and set of COLNAMES and ROWNAMES add the names +to the table for reinsertion to org-mode." + (if (listp table) + ((lambda (table) + (if (and colnames (listp (car table)) (= (length (car table)) + (length colnames))) + (org-babel-put-colnames table colnames) table)) + (if (and rownames (= (length table) (length rownames))) + (org-babel-put-rownames table rownames) table)) + table)) + +(defun org-babel-where-is-src-block-head () + "Find where the current source block begins. +Return the point at the beginning of the current source +block. Specifically at the beginning of the #+BEGIN_SRC line. +If the point is not on a source block then return nil." + (let ((initial (point)) top bottom) + (or + (save-excursion ;; on a source name line + (beginning-of-line 1) + (and (looking-at org-babel-src-name-regexp) (forward-line 1) + (looking-at org-babel-src-block-regexp) + (point))) + (save-excursion ;; on a #+begin_src line + (beginning-of-line 1) + (and (looking-at org-babel-src-block-regexp) + (point))) + (save-excursion ;; inside a src block + (and + (re-search-backward "^[ \t]*#\\+begin_src" nil t) (setq top (point)) + (re-search-forward "^[ \t]*#\\+end_src" nil t) (setq bottom (point)) + (< top initial) (< initial bottom) + (progn (goto-char top) (beginning-of-line 1) + (looking-at org-babel-src-block-regexp)) + (point)))))) + +;;;###autoload +(defun org-babel-goto-src-block-head () + "Go to the beginning of the current code block." + (interactive) + ((lambda (head) + (if head (goto-char head) (error "not currently in a code block"))) + (org-babel-where-is-src-block-head))) + +;;;###autoload +(defun org-babel-goto-named-src-block (name) + "Go to a named source-code block." + (interactive + (let ((completion-ignore-case t)) + (list (org-icompleting-read "source-block name: " + (org-babel-src-block-names) nil t)))) + (let ((point (org-babel-find-named-block name))) + (if point + ;; taken from `org-open-at-point' + (progn (goto-char point) (org-show-context)) + (message "source-code block '%s' not found in this buffer" name)))) + +(defun org-babel-find-named-block (name) + "Find a named source-code block. +Return the location of the source block identified by source +NAME, or nil if no such block exists. Set match data according to +org-babel-named-src-block-regexp." + (save-excursion + (let ((case-fold-search t) + (regexp (org-babel-named-src-block-regexp-for-name name)) msg) + (goto-char (point-min)) + (when (or (re-search-forward regexp nil t) + (re-search-backward regexp nil t)) + (match-beginning 0))))) + +(defun org-babel-src-block-names (&optional file) + "Returns the names of source blocks in FILE or the current buffer." + (save-excursion + (when file (find-file file)) (goto-char (point-min)) + (let (names) + (while (re-search-forward org-babel-src-name-w-name-regexp nil t) + (setq names (cons (org-babel-clean-text-properties (match-string 3)) + names))) + names))) + +;;;###autoload +(defun org-babel-goto-named-result (name) + "Go to a named result." + (interactive + (let ((completion-ignore-case t)) + (list (org-icompleting-read "source-block name: " + (org-babel-result-names) nil t)))) + (let ((point (org-babel-find-named-result name))) + (if point + ;; taken from `org-open-at-point' + (progn (goto-char point) (org-show-context)) + (message "result '%s' not found in this buffer" name)))) + +(defun org-babel-find-named-result (name) + "Find a named result. +Return the location of the result named NAME in the current +buffer or nil if no such result exists." + (save-excursion + (goto-char (point-min)) + (when (re-search-forward + (concat org-babel-result-regexp + "[ \t]" (regexp-quote name) "[ \t\n\f\v\r]") nil t) + (beginning-of-line 0) (point)))) + +(defun org-babel-result-names (&optional file) + "Returns the names of results in FILE or the current buffer." + (save-excursion + (when file (find-file file)) (goto-char (point-min)) + (let (names) + (while (re-search-forward org-babel-result-w-name-regexp nil t) + (setq names (cons (org-babel-clean-text-properties (match-string 4)) + names))) + names))) + +;;;###autoload +(defun org-babel-next-src-block (&optional arg) + "Jump to the next source block. +With optional prefix argument ARG, jump forward ARG many source blocks." + (interactive "P") + (when (looking-at org-babel-src-block-regexp) (forward-char 1)) + (condition-case nil + (re-search-forward org-babel-src-block-regexp nil nil (or arg 1)) + (error (error "No further code blocks"))) + (goto-char (match-beginning 0)) (org-show-context)) + +;;;###autoload +(defun org-babel-previous-src-block (&optional arg) + "Jump to the previous source block. +With optional prefix argument ARG, jump backward ARG many source blocks." + (interactive "P") + (condition-case nil + (re-search-backward org-babel-src-block-regexp nil nil (or arg 1)) + (error (error "No previous code blocks"))) + (goto-char (match-beginning 0)) (org-show-context)) + +(defvar org-babel-load-languages) + +;;;###autoload +(defun org-babel-mark-block () + "Mark current src block" + (interactive) + ((lambda (head) + (when head + (save-excursion + (goto-char head) + (looking-at org-babel-src-block-regexp)) + (push-mark (match-end 5) nil t) + (goto-char (match-beginning 5)))) + (org-babel-where-is-src-block-head))) + +(defun org-babel-demarcate-block (&optional arg) + "Wrap or split the code in the region or on the point. +When called from inside of a code block the current block is +split. When called from outside of a code block a new code block +is created. In both cases if the region is demarcated and if the +region is not active then the point is demarcated." + (interactive "P") + (let ((info (org-babel-get-src-block-info 'light)) + (stars (concat (make-string (or (org-current-level) 1) ?*) " "))) + (if info + (mapc + (lambda (place) + (save-excursion + (goto-char place) + (let ((lang (nth 0 info)) + (indent (make-string (nth 5 info) ? ))) + (when (string-match "^[[:space:]]*$" + (buffer-substring (point-at-bol) + (point-at-eol))) + (delete-region (point-at-bol) (point-at-eol))) + (insert (concat (if (looking-at "^") "" "\n") + indent "#+end_src\n" + (if arg stars indent) "\n" + indent "#+begin_src " lang + (if (looking-at "[\n\r]") "" "\n"))))) + (move-end-of-line 2)) + (sort (if (region-active-p) (list (mark) (point)) (list (point))) #'>)) + (let ((start (point)) + (lang (org-icompleting-read "Lang: " + (mapcar (lambda (el) (symbol-name (car el))) + org-babel-load-languages))) + (body (delete-and-extract-region + (if (region-active-p) (mark) (point)) (point)))) + (insert (concat (if (looking-at "^") "" "\n") + (if arg (concat stars "\n") "") + "#+begin_src " lang "\n" + body + (if (or (= (length body) 0) + (string-match "[\r\n]$" body)) "" "\n") + "#+end_src\n")) + (goto-char start) (move-end-of-line 1))))) + +(defvar org-babel-lob-one-liner-regexp) +(defun org-babel-where-is-src-block-result (&optional insert info hash indent) + "Find where the current source block results begin. +Return the point at the beginning of the result of the current +source block. Specifically at the beginning of the results line. +If no result exists for this block then create a results line +following the source block." + (save-excursion + (let* ((on-lob-line (progn (beginning-of-line 1) + (looking-at org-babel-lob-one-liner-regexp))) + (name (if on-lob-line + (nth 0 (org-babel-lob-get-info)) + (nth 4 (or info (org-babel-get-src-block-info))))) + (head (unless on-lob-line (org-babel-where-is-src-block-head))) + found beg end) + (when head (goto-char head)) + (setq + found ;; was there a result (before we potentially insert one) + (or + (and + ;; named results: + ;; - return t if it is found, else return nil + ;; - if it does not need to be rebuilt, then don't set end + ;; - if it does need to be rebuilt then do set end + name (setq beg (org-babel-find-named-result name)) + (prog1 beg + (when (and hash (not (string= hash (match-string 3)))) + (goto-char beg) (setq end beg) ;; beginning of result + (forward-line 1) + (delete-region end (org-babel-result-end)) nil))) + (and + ;; unnamed results: + ;; - return t if it is found, else return nil + ;; - if it is found, and the hash doesn't match, delete and set end + (or on-lob-line (re-search-forward "^[ \t]*#\\+end_src" nil t)) + (progn (end-of-line 1) + (if (eobp) (insert "\n") (forward-char 1)) + (setq end (point)) + (or (and (not name) + (progn ;; unnamed results line already exists + (re-search-forward "[^ \f\t\n\r\v]" nil t) + (beginning-of-line 1) + (looking-at + (concat org-babel-result-regexp "\n"))) + (prog1 (point) + ;; must remove and rebuild if hash!=old-hash + (if (and hash (not (string= hash (match-string 3)))) + (prog1 nil + (forward-line 1) + (delete-region + end (org-babel-result-end))) + (setq end nil))))))))) + (if (and insert end) + (progn + (goto-char end) + (unless beg + (if (looking-at "[\n\r]") (forward-char 1) (insert "\n"))) + (insert (concat + (if indent + (mapconcat + (lambda (el) " ") + (org-number-sequence 1 indent) "") + "") + "#+results" + (when hash (concat "["hash"]")) + ":" + (when name (concat " " name)) "\n")) + (unless beg (insert "\n") (backward-char)) + (beginning-of-line 0) + (if hash (org-babel-hide-hash)) + (point)) + found)))) + +(defvar org-block-regexp) +(defun org-babel-read-result () + "Read the result at `point' into emacs-lisp." + (let ((case-fold-search t) result-string) + (cond + ((org-at-table-p) (org-babel-read-table)) + ((org-in-item-p) (org-babel-read-list)) + ((looking-at org-bracket-link-regexp) (org-babel-read-link)) + ((looking-at org-block-regexp) (org-babel-trim (match-string 4))) + ((looking-at "^[ \t]*: ") + (setq result-string + (org-babel-trim + (mapconcat (lambda (line) + (if (and (> (length line) 1) + (string-match "^[ \t]*: \\(.+\\)" line)) + (match-string 1 line) + line)) + (split-string + (buffer-substring + (point) (org-babel-result-end)) "[\r\n]+") + "\n"))) + (or (org-babel-number-p result-string) result-string)) + ((looking-at org-babel-result-regexp) + (save-excursion (forward-line 1) (org-babel-read-result)))))) + +(defun org-babel-read-table () + "Read the table at `point' into emacs-lisp." + (mapcar (lambda (row) + (if (and (symbolp row) (equal row 'hline)) row + (mapcar #'org-babel-read row))) + (org-table-to-lisp))) + +(defun org-babel-read-list () + "Read the list at `point' into emacs-lisp." + (mapcar #'org-babel-read (cdr (org-list-parse-list)))) + +(defvar org-link-types-re) +(defun org-babel-read-link () + "Read the link at `point' into emacs-lisp. +If the path of the link is a file path it is expanded using +`expand-file-name'." + (let* ((case-fold-search t) + (raw (and (looking-at org-bracket-link-regexp) + (org-babel-clean-text-properties (match-string 1)))) + (type (and (string-match org-link-types-re raw) + (match-string 1 raw)))) + (cond + ((not type) (expand-file-name raw)) + ((string= type "file") + (and (string-match "file\\(.*\\):\\(.+\\)" raw) + (expand-file-name (match-string 2 raw)))) + (t raw)))) + +(defun org-babel-insert-result + (result &optional result-params info hash indent lang) + "Insert RESULT into the current buffer. +By default RESULT is inserted after the end of the +current source block. With optional argument RESULT-PARAMS +controls insertion of results in the org-mode file. +RESULT-PARAMS can take the following values... + +replace - (default option) insert results after the source block + replacing any previously inserted results + +silent -- no results are inserted + +file ---- the results are interpreted as a file path, and are + inserted into the buffer using the Org-mode file syntax + +list ---- the results are interpreted as an Org-mode list. + +raw ----- results are added directly to the Org-mode file. This + is a good option if you code block will output org-mode + formatted text. + +org ----- similar in effect to raw, only the results are wrapped + in an org code block. Similar to the raw option, on + export the results will be interpreted as org-formatted + text, however by wrapping the results in an org code + block they can be replaced upon re-execution of the + code block. + +html ---- results are added inside of a #+BEGIN_HTML block. This + is a good option if you code block will output html + formatted text. + +latex --- results are added inside of a #+BEGIN_LATEX block. + This is a good option if you code block will output + latex formatted text. + +code ---- the results are extracted in the syntax of the source + code of the language being evaluated and are added + inside of a #+BEGIN_SRC block with the source-code + language set appropriately. Note this relies on the + optional LANG argument." + (if (stringp result) + (progn + (setq result (org-babel-clean-text-properties result)) + (when (member "file" result-params) + (setq result (org-babel-result-to-file result)))) + (unless (listp result) (setq result (format "%S" result)))) + (if (and result-params (member "silent" result-params)) + (progn + (message (replace-regexp-in-string "%" "%%" (format "%S" result))) + result) + (when (and (stringp result) ;; ensure results end in a newline + (> (length result) 0) + (not (or (string-equal (substring result -1) "\n") + (string-equal (substring result -1) "\r")))) + (setq result (concat result "\n"))) + (save-excursion + (let ((existing-result (org-babel-where-is-src-block-result + t info hash indent)) + (results-switches + (cdr (assoc :results_switches (nth 2 info)))) + beg end) + (if (not existing-result) + (setq beg (point)) + (goto-char existing-result) + (save-excursion + (re-search-forward "#" nil t) + (setq indent (- (current-column) 1))) + (forward-line 1) + (setq beg (point)) + (cond + ((member "replace" result-params) + (delete-region (point) (org-babel-result-end))) + ((member "append" result-params) + (goto-char (org-babel-result-end)) (setq beg (point-marker))) + ((member "prepend" result-params)))) ; already there + (setq results-switches + (if results-switches (concat " " results-switches) "")) + ;; insert results based on type + (cond + ;; do nothing for an empty result + ((= (length result) 0)) + ;; insert a list if preferred + ((member "list" result-params) + (insert + (org-babel-trim + (org-list-to-generic (cons 'unordered + (if (listp result) result (list result))) + '(:splicep nil :istart "- " :iend "\n"))))) + ;; assume the result is a table if it's not a string + ((not (stringp result)) + (goto-char beg) + (insert (concat (orgtbl-to-orgtbl + (if (or (eq 'hline (car result)) + (and (listp (car result)) + (listp (cdr (car result))))) + result (list result)) + '(:fmt (lambda (cell) (format "%s" cell)))) "\n")) + (goto-char beg) (when (org-at-table-p) (org-table-align))) + ((member "file" result-params) + (insert result)) + (t (goto-char beg) (insert result))) + (when (listp result) (goto-char (org-table-end))) + (setq end (point-marker)) + ;; possibly wrap result + (flet ((wrap (start finish) + (goto-char beg) (insert start) + (goto-char end) (insert finish) + (setq end (point-marker)))) + (cond + ((member "html" result-params) + (wrap "#+BEGIN_HTML\n" "#+END_HTML")) + ((member "latex" result-params) + (wrap "#+BEGIN_LaTeX\n" "#+END_LaTeX")) + ((member "code" result-params) + (wrap (format "#+BEGIN_SRC %s%s\n" (or lang "none") results-switches) + "#+END_SRC")) + ((member "org" result-params) + (wrap "#+BEGIN_ORG\n" "#+END_ORG")) + ((member "raw" result-params) + (goto-char beg) (if (org-at-table-p) (org-cycle))) + ((member "wrap" result-params) + (when (and (stringp result) (not (member "file" result-params))) + (org-babel-examplize-region beg end results-switches)) + (wrap "#+BEGIN_RESULT\n" "#+END_RESULT")) + ((and (stringp result) (not (member "file" result-params))) + (org-babel-examplize-region beg end results-switches) + (setq end (point))))) + ;; possibly indent the results to match the #+results line + (when (and indent (> indent 0) + ;; in this case `table-align' does the work for us + (not (and (listp result) + (member "append" result-params)))) + (indent-rigidly beg end indent)))) + (if (= (length result) 0) + (if (member "value" result-params) + (message "Code block returned no value.") + (message "Code block produced no output.")) + (message "Code block evaluation complete.")))) + +(defun org-babel-remove-result (&optional info) + "Remove the result of the current source block." + (interactive) + (let ((location (org-babel-where-is-src-block-result nil info)) start) + (when location + (save-excursion + (goto-char location) (setq start (point)) (forward-line 1) + (delete-region start (org-babel-result-end)))))) + +(defun org-babel-result-end () + "Return the point at the end of the current set of results" + (save-excursion + (cond + ((org-at-table-p) (progn (goto-char (org-table-end)) (point))) + ((org-in-item-p) (- (org-list-bottom-point) 1)) + (t + (let ((case-fold-search t) + (blocks-re (regexp-opt + (list "latex" "html" "example" "src" "result")))) + (if (looking-at (concat "[ \t]*#\\+begin_" blocks-re)) + (re-search-forward (concat "[ \t]*#\\+end_" blocks-re) nil t) + (while (looking-at "[ \t]*\\(: \\|\\[\\[\\)") + (forward-line 1)))) + (point))))) + +(defun org-babel-result-to-file (result) + "Convert RESULT into an `org-mode' link. +If the `default-directory' is different from the containing +file's directory then expand relative links." + (format + "[[file:%s]]" + (if (and default-directory + buffer-file-name + (not (string= (expand-file-name default-directory) + (expand-file-name + (file-name-directory buffer-file-name))))) + (expand-file-name result default-directory) + result))) + +(defun org-babel-examplize-region (beg end &optional results-switches) + "Comment out region using the ': ' org example quote." + (interactive "*r") + (let ((size (count-lines beg end))) + (save-excursion + (cond ((= size 0)) ; do nothing for an empty result + ((< size org-babel-min-lines-for-block-output) + (goto-char beg) + (dotimes (n size) + (beginning-of-line 1) (insert ": ") (forward-line 1))) + (t + (goto-char beg) + (insert (if results-switches + (format "#+begin_example%s\n" results-switches) + "#+begin_example\n")) + (if (markerp end) (goto-char end) (forward-char (- end beg))) + (insert "#+end_example\n")))))) + +(defun org-babel-update-block-body (new-body) + "Update the body of the current code block to NEW-BODY." + (if (not (org-babel-where-is-src-block-head)) + (error "not in source block") + (save-match-data + (replace-match (concat (org-babel-trim new-body) "\n") nil nil nil 5)) + (indent-rigidly (match-beginning 5) (match-end 5) 2))) + +(defun org-babel-merge-params (&rest plists) + "Combine all parameter association lists in PLISTS. +Later elements of PLISTS override the values of previous element. +This takes into account some special considerations for certain +parameters when merging lists." + (let ((results-exclusive-groups + '(("file" "list" "vector" "table" "scalar" "raw" "org" + "html" "latex" "code" "pp" "wrap") + ("replace" "silent" "append" "prepend") + ("output" "value"))) + (exports-exclusive-groups + '(("code" "results" "both" "none"))) + params results exports tangle noweb cache vars shebang comments) + (flet ((e-merge (exclusive-groups &rest result-params) + ;; maintain exclusivity of mutually exclusive parameters + (let (output) + (mapc (lambda (new-params) + (mapc (lambda (new-param) + (mapc (lambda (exclusive-group) + (when (member new-param exclusive-group) + (mapcar (lambda (excluded-param) + (setq output + (delete + excluded-param + output))) + exclusive-group))) + exclusive-groups) + (setq output (org-uniquify + (cons new-param output)))) + new-params)) + result-params) + output))) + (mapc + (lambda (plist) + (mapc + (lambda (pair) + (case (car pair) + (:var + (let ((name (if (listp (cdr pair)) + (cadr pair) + (and (string-match "^\\([^= \f\t\n\r\v]+\\)[ \t]*=" + (cdr pair)) + (intern (match-string 1 (cdr pair))))))) + (when name + (setq vars + (cons (cons name pair) + (if (member name (mapcar #'car vars)) + (delq nil + (mapcar + (lambda (p) (unless (equal (car p) name) p)) + vars)) + vars)))))) + (:results + (setq results (e-merge results-exclusive-groups + results (split-string (cdr pair))))) + (:file + (when (cdr pair) + (setq results (e-merge results-exclusive-groups + results '("file"))) + (unless (or (member "both" exports) + (member "none" exports) + (member "code" exports)) + (setq exports (e-merge exports-exclusive-groups + exports '("results")))) + (setq params (cons pair (assq-delete-all (car pair) params))))) + (:exports + (setq exports (e-merge exports-exclusive-groups + exports (split-string (cdr pair))))) + (:tangle ;; take the latest -- always overwrite + (setq tangle (or (list (cdr pair)) tangle))) + (:noweb + (setq noweb (e-merge '(("yes" "no" "tangle")) noweb + (split-string (or (cdr pair) ""))))) + (:cache + (setq cache (e-merge '(("yes" "no")) cache + (split-string (or (cdr pair) ""))))) + (:shebang ;; take the latest -- always overwrite + (setq shebang (or (list (cdr pair)) shebang))) + (:comments + (setq comments (e-merge '(("yes" "no")) comments + (split-string (or (cdr pair) ""))))) + (t ;; replace: this covers e.g. :session + (setq params (cons pair (assq-delete-all (car pair) params)))))) + plist)) + plists)) + (while vars (setq params (cons (cons :var (cddr (pop vars))) params))) + (cons (cons :comments (mapconcat 'identity comments " ")) + (cons (cons :shebang (mapconcat 'identity shebang " ")) + (cons (cons :cache (mapconcat 'identity cache " ")) + (cons (cons :noweb (mapconcat 'identity noweb " ")) + (cons (cons :tangle (mapconcat 'identity tangle " ")) + (cons (cons :exports + (mapconcat 'identity exports " ")) + (cons + (cons :results + (mapconcat 'identity results " ")) + params))))))))) + +(defun org-babel-expand-noweb-references (&optional info parent-buffer) + "Expand Noweb references in the body of the current source code block. + +For example the following reference would be replaced with the +body of the source-code block named 'example-block'. + +<<example-block>> + +Note that any text preceding the <<foo>> construct on a line will +be interposed between the lines of the replacement text. So for +example if <<foo>> is placed behind a comment, then the entire +replacement text will also be commented. + +This function must be called from inside of the buffer containing +the source-code block which holds BODY. + +In addition the following syntax can be used to insert the +results of evaluating the source-code block named 'example-block'. + +<<example-block()>> + +Any optional arguments can be passed to example-block by placing +the arguments inside the parenthesis following the convention +defined by `org-babel-lob'. For example + +<<example-block(a=9)>> + +would set the value of argument \"a\" equal to \"9\". Note that +these arguments are not evaluated in the current source-code +block but are passed literally to the \"example-block\"." + (let* ((parent-buffer (or parent-buffer (current-buffer))) + (info (or info (org-babel-get-src-block-info))) + (lang (nth 0 info)) + (body (nth 1 info)) + (new-body "") index source-name evaluate prefix) + (flet ((nb-add (text) + (setq new-body (concat new-body text)))) + (with-temp-buffer + (insert body) (goto-char (point-min)) + (setq index (point)) + (while (and (re-search-forward "<<\\(.+?\\)>>" nil t)) + (save-match-data (setf source-name (match-string 1))) + (save-match-data (setq evaluate (string-match "\(.*\)" source-name))) + (save-match-data + (setq prefix + (buffer-substring (match-beginning 0) + (save-excursion + (beginning-of-line 1) (point))))) + ;; add interval to new-body (removing noweb reference) + (goto-char (match-beginning 0)) + (nb-add (buffer-substring index (point))) + (goto-char (match-end 0)) + (setq index (point)) + (nb-add (with-current-buffer parent-buffer + (mapconcat ;; interpose PREFIX between every line + #'identity + (split-string + (if evaluate + (let ((raw (org-babel-ref-resolve source-name))) + (if (stringp raw) raw (format "%S" raw))) + (save-restriction + (widen) + (let ((point (org-babel-find-named-block + source-name))) + (if point + (save-excursion + (goto-char point) + (org-babel-trim + (org-babel-expand-noweb-references + (org-babel-get-src-block-info)))) + ;; optionally raise an error if named + ;; source-block doesn't exist + (if (member lang org-babel-noweb-error-langs) + (error "%s" + (concat + "<<" source-name ">> " + "could not be resolved (see " + "`org-babel-noweb-error-langs')")) + ""))))) + "[\n\r]") (concat "\n" prefix))))) + (nb-add (buffer-substring index (point-max))))) + new-body)) + +(defun org-babel-clean-text-properties (text) + "Strip all properties from text return." + (when text + (set-text-properties 0 (length text) nil text) text)) + +(defun org-babel-strip-protective-commas (body) + "Strip protective commas from bodies of source blocks." + (replace-regexp-in-string "^,#" "#" body)) + +(defun org-babel-script-escape (str) + "Safely convert tables into elisp lists." + (let (in-single in-double out) + (org-babel-read + (if (and (stringp str) (string-match "^\\[.+\\]$" str)) + (org-babel-read + (concat + "'" + (progn + (mapc + (lambda (ch) + (setq + out + (case ch + (91 (if (or in-double in-single) ; [ + (cons 91 out) + (cons 40 out))) + (93 (if (or in-double in-single) ; ] + (cons 93 out) + (cons 41 out))) + (44 (if (or in-double in-single) (cons 44 out) out)) ; , + (39 (if in-double ; ' + (cons 39 out) + (setq in-single (not in-single)) (cons 34 out))) + (34 (if in-single ; " + (append (list 34 32) out) + (setq in-double (not in-double)) (cons 34 out))) + (t (cons ch out))))) + (string-to-list str)) + (apply #'string (reverse out))))) + str)))) + +(defun org-babel-read (cell) + "Convert the string value of CELL to a number if appropriate. +Otherwise if cell looks like lisp (meaning it starts with a +\"(\" or a \"'\") then read it as lisp, otherwise return it +unmodified as a string. + +This is taken almost directly from `org-read-prop'." + (if (and (stringp cell) (not (equal cell ""))) + (or (org-babel-number-p cell) + (if (or (equal "(" (substring cell 0 1)) + (equal "'" (substring cell 0 1)) + (equal "`" (substring cell 0 1))) + (eval (read cell)) + (progn (set-text-properties 0 (length cell) nil cell) cell))) + cell)) + +(defun org-babel-number-p (string) + "If STRING represents a number return it's value." + (if (and (string-match "^-?[0-9]*\\.?[0-9]*$" string) + (= (length (substring string (match-beginning 0) + (match-end 0))) + (length string))) + (string-to-number string))) + +(defun org-babel-import-elisp-from-file (file-name &optional separator) + "Read the results located at FILE-NAME into an elisp table. +If the table is trivial, then return it as a scalar." + (let (result) + (save-window-excursion + (with-temp-buffer + (condition-case nil + (progn + (org-table-import file-name separator) + (delete-file file-name) + (setq result (mapcar (lambda (row) + (mapcar #'org-babel-string-read row)) + (org-table-to-lisp)))) + (error nil))) + (if (null (cdr result)) ;; if result is trivial vector, then scalarize it + (if (consp (car result)) + (if (null (cdr (car result))) + (caar result) + result) + (car result)) + result)))) + +(defun org-babel-string-read (cell) + "Strip nested \"s from around strings." + (org-babel-read (or (and (stringp cell) + (string-match "\\\"\\(.+\\)\\\"" cell) + (match-string 1 cell)) + cell))) + +(defun org-babel-reverse-string (string) + "Return the reverse of STRING." + (apply 'string (reverse (string-to-list string)))) + +(defun org-babel-chomp (string &optional regexp) + "Strip trailing spaces and carriage returns from STRING. +Default regexp used is \"[ \f\t\n\r\v]\" but can be +overwritten by specifying a regexp as a second argument." + (let ((regexp (or regexp "[ \f\t\n\r\v]"))) + (while (and (> (length string) 0) + (string-match regexp (substring string -1))) + (setq string (substring string 0 -1))) + string)) + +(defun org-babel-trim (string &optional regexp) + "Strip leading and trailing spaces and carriage returns from STRING. +Like `org-babel-chomp' only it runs on both the front and back +of the string." + (org-babel-chomp (org-babel-reverse-string + (org-babel-chomp (org-babel-reverse-string string) regexp)) + regexp)) + +(defvar org-babel-org-babel-call-process-region-original nil) +(defun org-babel-tramp-handle-call-process-region + (start end program &optional delete buffer display &rest args) + "Use tramp to handle call-process-region. +Fixes a bug in `tramp-handle-call-process-region'." + (if (and (featurep 'tramp) (file-remote-p default-directory)) + (let ((tmpfile (tramp-compat-make-temp-file ""))) + (write-region start end tmpfile) + (when delete (delete-region start end)) + (unwind-protect + ;; (apply 'call-process program tmpfile buffer display args) + ;; bug in tramp + (apply 'process-file program tmpfile buffer display args) + (delete-file tmpfile))) + ;; org-babel-call-process-region-original is the original emacs + ;; definition. It is in scope from the let binding in + ;; org-babel-execute-src-block + (apply org-babel-call-process-region-original + start end program delete buffer display args))) + +(defun org-babel-local-file-name (file) + "Return the local name component of FILE." + (if (file-remote-p file) + (let (localname) + (with-parsed-tramp-file-name file nil + localname)) + file)) + +(defun org-babel-process-file-name (name &optional no-quote-p) + "Prepare NAME to be used in an external process. +If NAME specifies a remote location, the remote portion of the +name is removed, since in that case the process will be executing +remotely. The file name is then processed by +`expand-file-name'. Unless second argument NO-QUOTE-P is non-nil, +the file name is additionally processed by +`shell-quote-argument'" + ((lambda (f) (if no-quote-p f (shell-quote-argument f))) + (expand-file-name (org-babel-local-file-name name)))) + +(defvar org-babel-temporary-directory) +(unless (or noninteractive (boundp 'org-babel-temporary-directory)) + (defvar org-babel-temporary-directory + (or (and (boundp 'org-babel-temporary-directory) + (file-exists-p org-babel-temporary-directory) + org-babel-temporary-directory) + (make-temp-file "babel-" t)) + "Directory to hold temporary files created to execute code blocks. +Used by `org-babel-temp-file'. This directory will be removed on +Emacs shutdown.")) + +(defun org-babel-temp-file (prefix &optional suffix) + "Create a temporary file in the `org-babel-temporary-directory'. +Passes PREFIX and SUFFIX directly to `make-temp-file' with the +value of `temporary-file-directory' temporarily set to the value +of `org-babel-temporary-directory'." + (if (file-remote-p default-directory) + (make-temp-file + (concat (file-remote-p default-directory) + (expand-file-name + prefix temporary-file-directory) + nil suffix)) + (let ((temporary-file-directory + (or (and (file-exists-p org-babel-temporary-directory) + org-babel-temporary-directory) + temporary-file-directory))) + (make-temp-file prefix nil suffix)))) + +(defun org-babel-remove-temporary-directory () + "Remove `org-babel-temporary-directory' on Emacs shutdown." + (when (and (boundp 'org-babel-temporary-directory) + (file-exists-p org-babel-temporary-directory)) + ;; taken from `delete-directory' in files.el + (condition-case nil + (progn + (mapc (lambda (file) + ;; This test is equivalent to + ;; (and (file-directory-p fn) (not (file-symlink-p fn))) + ;; but more efficient + (if (eq t (car (file-attributes file))) + (delete-directory file) + (delete-file file))) + ;; We do not want to delete "." and "..". + (directory-files org-babel-temporary-directory 'full + "^\\([^.]\\|\\.\\([^.]\\|\\..\\)\\).*")) + (delete-directory org-babel-temporary-directory)) + (error + (message "Failed to remove temporary Org-babel directory %s" + org-babel-temporary-directory))))) + +(add-hook 'kill-emacs-hook 'org-babel-remove-temporary-directory) + +(provide 'ob) + +;; arch-tag: 01a7ebee-06c5-4ee4-a709-e660d28c0af1 + +;;; ob.el ends here |