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From: Joseph Turner <joseph@breatheoutbreathe.in>
To: emacs-orgmode@gnu.org
Cc: yantar92@gmail.com, Joseph Turner <joseph@breatheoutbreathe.in>
Subject: [PATCH v2] lisp/ob-plantuml.el: Insert results in buffer
Date: Wed,  3 Aug 2022 12:02:45 -0700	[thread overview]
Message-ID: <20220803190245.26056-1-joseph@breatheoutbreathe.in> (raw)

When :results header arg is set to a value that doesn't include
"file", insert txt output in buffer below src block.

 etc/ORG-NEWS        |  7 +++++++
 lisp/ob-plantuml.el | 13 ++++++++++---
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/etc/ORG-NEWS b/etc/ORG-NEWS
index 4cda357f1..b8cd05d4e 100644
--- a/etc/ORG-NEWS
+++ b/etc/ORG-NEWS
@@ -295,6 +295,13 @@ files that are exported to Texinfo.
 =org-at-heading-p= now returns t by default on headings inside folds.
 Passing optional argument will produce the old behaviour.
+*** =org-babel-execute:plantuml= can output ASCII graphs in the buffer
+Previously, executing PlantUML src blocks always exported to a file.  Now, if
+:results is set to a value which does not include "file", no file will be
+exported and an ASCII graph will be inserted below the src block.
 ** Removed or renamed functions and variables
 *** =org-plantump-executable-args= is renamed and applies to jar as well
diff --git a/lisp/ob-plantuml.el b/lisp/ob-plantuml.el
index ebbcdf166..85dd34e62 100644
--- a/lisp/ob-plantuml.el
+++ b/lisp/ob-plantuml.el
@@ -109,8 +109,12 @@ If BODY does not contain @startXXX ... @endXXX clauses, @startuml
 (defun org-babel-execute:plantuml (body params)
   "Execute a block of plantuml code with org-babel.
 This function is called by `org-babel-execute-src-block'."
-  (let* ((out-file (or (cdr (assq :file params))
-		       (error "PlantUML requires a \":file\" header argument")))
+  (let* ((do-export (member "file"
+                            (split-string (cdr (assq :results params)))))
+         (out-file (if do-export
+                       (or (cdr (assq :file params))
+                           (error "No :file provided but :results set to file. For plain text output, set :results to verbatim"))
+		     (org-babel-temp-file "plantuml-" ".txt")))
 	 (cmdline (cdr (assq :cmdline params)))
 	 (in-file (org-babel-temp-file "plantuml-"))
 	 (java (or (cdr (assq :java params)) ""))
@@ -155,7 +159,10 @@ This function is called by `org-babel-execute-src-block'."
     (if (and (string= (file-name-extension out-file) "svg")
         (org-babel-eval (format "inkscape %s -T -l %s" out-file out-file) ""))
-    nil)) ;; signal that output has already been written to file
+    (unless do-export (with-temp-buffer
+                        (insert-file-contents out-file)
+                        (buffer-substring-no-properties
+                         (point-min) (point-max))))))
 (defun org-babel-prep-session:plantuml (_session _params)
   "Return an error because plantuml does not support sessions."

             reply	other threads:[~2022-08-03 19:04 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-03 19:02 Joseph Turner [this message]
2022-08-05  5:15 ` [PATCH v2] lisp/ob-plantuml.el: Insert results in buffer Ihor Radchenko
2022-08-05 20:10   ` Joseph Turner
2022-08-06  8:19     ` Ihor Radchenko
2022-10-30  6:23     ` Ihor Radchenko
2022-10-31  6:02       ` Ihor Radchenko
2022-10-31 19:20         ` Joseph Turner

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