forked from mirrors/org-mode
58f1dbccf8
Also remove blank lines before the ";;; org*el ends here" declarations. Having a "Version" header forced us to update every file when releasing a new version of Org; it also forced us to update every file when merging Org with Emacs trunk, thus cluttering the diffs between the previously merged version and the new one with useless information. Glenn Morris suggested this in emacs-devel: http://lists.gnu.org/archive/html/emacs-devel/2011-08/msg00322.html
145 lines
5 KiB
EmacsLisp
145 lines
5 KiB
EmacsLisp
;;; ob-sql.el --- org-babel functions for sql evaluation
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;; Copyright (C) 2009-2011 Free Software Foundation, Inc.
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org-Babel support for evaluating sql source code.
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;;
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;; SQL is somewhat unique in that there are many different engines for
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;; the evaluation of sql (Mysql, PostgreSQL, etc...), so much of this
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;; file will have to be implemented engine by engine.
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;;
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;; Also SQL evaluation generally takes place inside of a database.
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;;
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;; For now lets just allow a generic ':cmdline' header argument.
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;;
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;; TODO:
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;;
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;; - support for sessions
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;; - add more useful header arguments (user, passwd, database, etc...)
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;; - support for more engines (currently only supports mysql)
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;; - what's a reasonable way to drop table data into SQL?
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;;
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;;; Code:
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(require 'ob)
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(eval-when-compile (require 'cl))
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(declare-function org-table-import "org-table" (file arg))
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(declare-function orgtbl-to-csv "org-table" (TABLE PARAMS))
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(defvar org-babel-default-header-args:sql '())
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(defun org-babel-expand-body:sql (body params)
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"Expand BODY according to the values of PARAMS."
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(org-babel-sql-expand-vars
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body (mapcar #'cdr (org-babel-get-header params :var))))
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(defun org-babel-execute:sql (body params)
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"Execute a block of Sql code with Babel.
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This function is called by `org-babel-execute-src-block'."
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(let* ((result-params (cdr (assoc :result-params params)))
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(cmdline (cdr (assoc :cmdline params)))
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(engine (cdr (assoc :engine params)))
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(in-file (org-babel-temp-file "sql-in-"))
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(out-file (or (cdr (assoc :out-file params))
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(org-babel-temp-file "sql-out-")))
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(header-delim "")
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(command (case (intern engine)
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('msosql (format "osql %s -s \"\t\" -i %s -o %s"
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(or cmdline "")
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(org-babel-process-file-name in-file)
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(org-babel-process-file-name out-file)))
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('mysql (format "mysql %s < %s > %s"
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(or cmdline "")
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(org-babel-process-file-name in-file)
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(org-babel-process-file-name out-file)))
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('postgresql (format
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"psql -A -P footer=off -F \"\t\" -f %s -o %s %s"
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(org-babel-process-file-name in-file)
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(org-babel-process-file-name out-file)
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(or cmdline "")))
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(t (error "no support for the %s sql engine" engine)))))
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(with-temp-file in-file
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(insert (org-babel-expand-body:sql body params)))
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(message command)
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(shell-command command)
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(with-temp-buffer
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;; need to figure out what the delimiter is for the header row
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(with-temp-buffer
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(insert-file-contents out-file)
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(goto-char (point-min))
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(when (re-search-forward "^\\(-+\\)[^-]" nil t)
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(setq header-delim (match-string-no-properties 1)))
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(goto-char (point-max))
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(forward-char -1)
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(while (looking-at "\n")
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(delete-char 1)
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(goto-char (point-max))
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(forward-char -1))
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(write-file out-file))
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(org-table-import out-file '(16))
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(org-babel-reassemble-table
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(mapcar (lambda (x)
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(if (string= (car x) header-delim)
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'hline
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x))
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(org-table-to-lisp))
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(org-babel-pick-name (cdr (assoc :colname-names params))
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(cdr (assoc :colnames params)))
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(org-babel-pick-name (cdr (assoc :rowname-names params))
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(cdr (assoc :rownames params)))))))
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(defun org-babel-sql-expand-vars (body vars)
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"Expand the variables held in VARS in BODY."
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(mapc
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(lambda (pair)
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(setq body
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(replace-regexp-in-string
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(format "\$%s" (car pair))
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((lambda (val)
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(if (listp val)
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((lambda (data-file)
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(with-temp-file data-file
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(insert (orgtbl-to-csv
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val '(:fmt (lambda (el) (if (stringp el)
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el
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(format "%S" el)))))))
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data-file)
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(org-babel-temp-file "sql-data-"))
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(if (stringp val) val (format "%S" val))))
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(cdr pair))
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body)))
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vars)
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body)
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(defun org-babel-prep-session:sql (session params)
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"Raise an error because Sql sessions aren't implemented."
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(error "sql sessions not yet implemented"))
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(provide 'ob-sql)
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;;; ob-sql.el ends here
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