95 lines
3.0 KiB
EmacsLisp
95 lines
3.0 KiB
EmacsLisp
;;; ob-sqlite.el --- org-babel functions for sqlite database interaction
|
|
|
|
;; Copyright (C) 2010 Free Software Foundation
|
|
|
|
;; Author: Eric Schulte
|
|
;; Keywords: literate programming, reproducible research
|
|
;; Homepage: http://orgmode.org
|
|
;; Version: 0.01
|
|
|
|
;; 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:
|
|
|
|
;; Org-Babel support for evaluating sqlite source code.
|
|
|
|
;;; Code:
|
|
(require 'ob)
|
|
|
|
(defvar org-babel-default-header-args:sqlite '())
|
|
|
|
(defun org-babel-expand-body:sqlite
|
|
(body params &optional processed-params) body)
|
|
|
|
(defvar org-babel-sqlite3-command "sqlite3")
|
|
|
|
(defun org-babel-execute:sqlite (body params)
|
|
"Execute a block of Sqlite code with org-babel. This function is
|
|
called by `org-babel-execute-src-block'."
|
|
(message "executing Sqlite source code block")
|
|
(let ((result-params (split-string (or (cdr (assoc :results params)) "")))
|
|
(vars (org-babel-ref-variables params))
|
|
(headers-p (equal "yes" (cdr (assoc :colnames params)))))
|
|
(with-temp-buffer
|
|
(insert
|
|
(shell-command-to-string
|
|
(format "%s %s -csv %s %S"
|
|
org-babel-sqlite3-command
|
|
(if headers-p "-header" "")
|
|
(cdr (assoc :db params))
|
|
(org-babel-sqlite-expand-vars body vars))))
|
|
(if (or (member "scalar" result-params)
|
|
(member "code" result-params))
|
|
(buffer-string)
|
|
(org-table-convert-region (point-min) (point-max))
|
|
(org-babel-sqlite-table-or-scalar
|
|
(org-babel-sqlite-offset-colnames
|
|
(org-table-to-lisp) headers-p))))))
|
|
|
|
(defun org-babel-sqlite-expand-vars (body vars)
|
|
"Expand the variables held in VARS in BODY."
|
|
(mapc
|
|
(lambda (pair)
|
|
(setq body (replace-regexp-in-string
|
|
(format "\$%s" (car pair))
|
|
(format "%S" (cdr pair))
|
|
body)))
|
|
vars)
|
|
body)
|
|
|
|
(defun org-babel-sqlite-table-or-scalar (result)
|
|
"If RESULT looks like a trivial table, then unwrap it."
|
|
(if (and (equal 1 (length result))
|
|
(equal 1 (length (car result))))
|
|
(caar result)
|
|
result))
|
|
|
|
(defun org-babel-sqlite-offset-colnames (table headers-p)
|
|
"If HEADERS-P is non-nil then offset the first row as column names."
|
|
(if headers-p
|
|
(cons (car table) (cons 'hline (cdr table)))
|
|
table))
|
|
|
|
(defun org-babel-prep-session:sqlite (session params)
|
|
"Prepare SESSION according to the header arguments specified in PARAMS."
|
|
(error "sqlite sessions not yet implemented"))
|
|
|
|
(provide 'ob-sqlite)
|
|
|
|
;; arch-tag: 5c03d7f2-0f72-48b8-bbd1-35aafea248ac
|
|
|
|
;;; ob-sqlite.el ends here
|