From: Gary Oberbrunner <garyo@oberbrunner.com>
To: Orgmode Mailing List <emacs-orgmode@gnu.org>
Subject: Re: patch for ob-sql.el: improve MySQL header formatting, and add db spec header vars
Date: Fri, 1 Feb 2013 13:57:46 -0500 [thread overview]
Message-ID: <CAFChFygWZ9GqgZR8qH133AXwamut6gx0PfaQjxqB2RY5bFNbaw@mail.gmail.com> (raw)
In-Reply-To: <CAFChFyjc2_tF=2TbCXF8mJUvqQ4qVC85TPL3Dq+WTaBAvmLvEA@mail.gmail.com>
[-- Attachment #1.1: Type: text/plain, Size: 901 bytes --]
Here's a better version of this patch, which also adds support for
:colnames, which I needed. And it adds some doc about what header args are
used.
* add a header-row delimiter to the tables returned from mysql
* adds new sql-specific header args for the database connection, and
implements them for mysql
* adds support for :colnames (mysql only)
* (minor) adds an edebug spec to org-babel-result-cond to allow edebugging
through it
On Fri, Feb 1, 2013 at 10:18 AM, Gary Oberbrunner <garyo@oberbrunner.com>wrote:
> Let me know if this would be better as a pull request. This patch does
> three things:
>
> * add a header-row delimiter to the tables returned from mysql
> * adds new sql-specific header args for the database connection, and
> implements them for mysql
> * (minor) adds an edebug spec to org-babel-result-cond to allow
> edebugging through it
>
> --
> Gary
>
--
Gary
[-- Attachment #1.2: Type: text/html, Size: 1732 bytes --]
[-- Attachment #2: org-mode-sql-2.patch --]
[-- Type: application/octet-stream, Size: 5326 bytes --]
diff --git a/lisp/ob-core.el b/lisp/ob-core.el
index bdf8c54..1a42965 100644
--- a/lisp/ob-core.el
+++ b/lisp/ob-core.el
@@ -2585,7 +2585,8 @@ Emacs shutdown."))
(defmacro org-babel-result-cond (result-params scalar-form &rest table-forms)
"Call the code to parse raw string results according to RESULT-PARAMS."
- (declare (indent 1))
+ (declare (indent 1)
+ (debug (form form &rest form)))
`(unless (member "none" ,result-params)
(if (or (member "scalar" ,result-params)
(member "verbatim" ,result-params)
diff --git a/lisp/ob-sql.el b/lisp/ob-sql.el
index 8d2ba24..51cafe6 100644
--- a/lisp/ob-sql.el
+++ b/lisp/ob-sql.el
@@ -32,12 +32,24 @@
;;
;; Also SQL evaluation generally takes place inside of a database.
;;
-;; For now lets just allow a generic ':cmdline' header argument.
+;; Header args used:
+;; - engine
+;; - cmdline
+;; - dbhost
+;; - dbuser
+;; - dbpassword
+;; - database
+;; - colnames (default, nil, means "yes")
+;; - result-params
+;; - out-file
+;; The following are used but not really implemented for SQL:
+;; - colname-names
+;; - rownames
+;; - rowname-names
;;
;; TODO:
;;
;; - support for sessions
-;; - add more useful header arguments (user, passwd, database, etc...)
;; - support for more engines (currently only supports mysql)
;; - what's a reasonable way to drop table data into SQL?
;;
@@ -52,21 +64,40 @@
(defvar org-babel-default-header-args:sql '())
-(defvar org-babel-header-args:sql
- '((engine . :any)
- (out-file . :any)))
+(defconst org-babel-header-args:sql
+ '((engine . :any)
+ (out-file . :any)
+ (dbhost . :any)
+ (dbuser . :any)
+ (dbpassword . :any)
+ (database . :any))
+ "SQL-specific header arguments.")
(defun org-babel-expand-body:sql (body params)
"Expand BODY according to the values of PARAMS."
(org-babel-sql-expand-vars
body (mapcar #'cdr (org-babel-get-header params :var))))
+(defun dbstring-mysql (host user password database)
+ "Make MySQL cmd line args for database connection. Pass nil to omit that arg."
+ (combine-and-quote-strings
+ (remq nil
+ (list (when host (concat "-h" host))
+ (when user (concat "-u" user))
+ (when password (concat "-p" password))
+ (when database (concat "-D" database))))))
+
(defun org-babel-execute:sql (body params)
"Execute a block of Sql code with Babel.
This function is called by `org-babel-execute-src-block'."
(let* ((result-params (cdr (assoc :result-params params)))
(cmdline (cdr (assoc :cmdline params)))
+ (dbhost (cdr (assoc :dbhost params)))
+ (dbuser (cdr (assoc :dbuser params)))
+ (dbpassword (cdr (assoc :dbpassword params)))
+ (database (cdr (assoc :database params)))
(engine (cdr (assoc :engine params)))
+ (colnames-p (not (equal "no" (cdr (assoc :colnames params)))))
(in-file (org-babel-temp-file "sql-in-"))
(out-file (or (cdr (assoc :out-file params))
(org-babel-temp-file "sql-out-")))
@@ -85,7 +116,9 @@ This function is called by `org-babel-execute-src-block'."
(or cmdline "")
(org-babel-process-file-name in-file)
(org-babel-process-file-name out-file)))
- ('mysql (format "mysql %s < %s > %s"
+ ('mysql (format "mysql %s %s %s < %s > %s"
+ (dbstring-mysql dbhost dbuser dbpassword database)
+ (if colnames-p "" "-N")
(or cmdline "")
(org-babel-process-file-name in-file)
(org-babel-process-file-name out-file)))
@@ -107,19 +140,34 @@ This function is called by `org-babel-execute-src-block'."
(with-temp-buffer
(progn (insert-file-contents-literally out-file) (buffer-string)))
(with-temp-buffer
- ;; need to figure out what the delimiter is for the header row
- (with-temp-buffer
- (insert-file-contents out-file)
- (goto-char (point-min))
- (when (re-search-forward "^\\(-+\\)[^-]" nil t)
- (setq header-delim (match-string-no-properties 1)))
- (goto-char (point-max))
- (forward-char -1)
- (while (looking-at "\n")
- (delete-char 1)
- (goto-char (point-max))
- (forward-char -1))
- (write-file out-file))
+ (case (intern engine)
+ ('mysql
+ ;; add header row delimiter after column-names header in first line
+ (cond
+ (colnames-p
+ (with-temp-buffer
+ (insert-file-contents out-file)
+ (goto-char (point-min))
+ (forward-line 1)
+ (insert "-\n")
+ (setq header-delim "-")
+ (write-file out-file)
+ ))))
+ (t
+ ;; need to figure out what the delimiter is for the header row
+ (with-temp-buffer
+ (insert-file-contents out-file)
+ (goto-char (point-min))
+ (when (re-search-forward "^\\(-+\\)[^-]" nil t)
+ (setq header-delim (match-string-no-properties 1)))
+ (goto-char (point-max))
+ (forward-char -1)
+ (while (looking-at "\n")
+ (delete-char 1)
+ (goto-char (point-max))
+ (forward-char -1))
+ (write-file out-file)))
+ )
(org-table-import out-file '(16))
(org-babel-reassemble-table
(mapcar (lambda (x)
next prev parent reply other threads:[~2013-02-01 19:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-01 15:18 patch for ob-sql.el: improve MySQL header formatting, and add db spec header vars Gary Oberbrunner
2013-02-01 18:57 ` Gary Oberbrunner [this message]
2013-02-03 22:53 ` Eric Schulte
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.orgmode.org/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAFChFygWZ9GqgZR8qH133AXwamut6gx0PfaQjxqB2RY5bFNbaw@mail.gmail.com \
--to=garyo@oberbrunner.com \
--cc=emacs-orgmode@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).