Hello, I have modified 'ob-scheme.el' to be able to return org tables.
This is a quick patch. I hope you find it useful buut I could modify,
document or write test for it if necesary.
I have already assigned the copyright for Emacs to the FSF.
Enhance the scheme babel block output.
Allow scheme code blocks to return a table.
* lisp/ob-scheme.el (org-babel-scheme-null-to): New custom option that
allows to use a empty list to format the table output, initially assigned
to 'hlines.
(org-babel-scheme-table-or-string): New helper function to convert the
return value from the block as a table or a string.
(org-babel-execute-src-block): Changed to allow the return of a table for
the output.
1 file changed, 35 insertions(+), 11 deletions(-)
lisp/ob-scheme.el | 46 +++++++++++++++++++++++++++++++++++-----------
modified lisp/ob-scheme.el
@@ -51,6 +51,13 @@
(start end &optional and-go raw nomsg))
(declare-function geiser-repl-exit "ext:geiser-repl" (&optional arg))
+(defcustom org-babel-scheme-null-to 'hline
+ "Replace `null' in scheme tables with this before returning."
+ :group 'org-babel
+ :version "24.4"
+ :package-version '(Org . "8.0")
+ :type 'symbol)
+
(defvar org-babel-default-header-args:scheme '()
"Default header arguments for scheme code blocks.")
@@ -176,6 +183,18 @@ is true; otherwise returns the last value."
result))))
result))
+(defun org-babel-scheme-table-or-string (results)
+ "Convert RESULTS into an appropriate elisp value.
+If the results look like a list or tuple, then convert them into an
+Emacs-lisp table, otherwise return the results as a string."
+ (let ((res (org-babel-script-escape results)))
+ (if (listp res)
+ (mapcar (lambda (el) (if (or (eq el '()) (eq el 'null))
+ org-babel-scheme-null-to
+ el))
+ res)
+ res)))
+
(defun org-babel-execute:scheme (body params)
"Execute a block of Scheme code with org-babel.
This function is called by `org-babel-execute-src-block'"
@@ -184,7 +203,6 @@ This function is called by `org-babel-execute-src-block'"
"^ ?\\*\\([^*]+\\)\\*" "\\1"
(buffer-name source-buffer))))
(save-excursion
- (org-babel-reassemble-table
(let* ((result-type (cdr (assq :result-type params)))
(impl (or (when (cdr (assq :scheme params))
(intern (cdr (assq :scheme params))))
@@ -192,16 +210,22 @@ This function is called by `org-babel-execute-src-block'"
(car geiser-active-implementations)))
(session (org-babel-scheme-make-session-name
source-buffer-name (cdr (assq :session params)) impl))
- (full-body (org-babel-expand-body:scheme body params)))
- (org-babel-scheme-execute-with-geiser
- full-body ; code
- (string= result-type "output") ; output?
- impl ; implementation
- (and (not (string= session "none")) session))) ; session
- (org-babel-pick-name (cdr (assq :colname-names params))
- (cdr (assq :colnames params)))
- (org-babel-pick-name (cdr (assq :rowname-names params))
- (cdr (assq :rownames params)))))))
+ (full-body (org-babel-expand-body:scheme body params))
+ (result
+ (org-babel-scheme-execute-with-geiser
+ full-body ; code
+ (string= result-type "output") ; output?
+ impl ; implementation
+ (and (not (string= session "none")) session))) ; session
+ )
+ (let ((table
+ (org-babel-reassemble-table
+ result
+ (org-babel-pick-name (cdr (assq :colname-names params))
+ (cdr (assq :colnames params)))
+ (org-babel-pick-name (cdr (assq :rowname-names params))
+ (cdr (assq :rownames params))))))
+ (org-babel-scheme-table-or-string table))))))
(provide 'ob-scheme)
Best regards:
José L. Doménech
