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;;; orgtbl-sqlinsert.el --- orgtbl to SQL insert statements.
;; Copyright (C) 2008-2014 Free Software Foundation
;; Author: Jason Riedy <jason@acm.org>
;; Keywords: org, tables, sql
;; This file is not part of GNU Emacs.
;; This program 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.
;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Converts an orgtbl to a sequence of SQL insertion commands.
;; Table cells are quoted and escaped very conservatively.
;;; Code:
(defun orgtbl-to-sqlinsert (table params)
"Convert the orgtbl-mode TABLE to SQL insert statements.
TABLE is a list, each entry either the symbol `hline' for a horizontal
separator line, or a list of fields for that line.
PARAMS is a property list of parameters that can influence the conversion.
Names and strings are modified slightly by default. Single-ticks
are doubled as per SQL's standard mechanism. Backslashes and
dollar signs are deleted. And tildes are changed to spaces.
These modifications were chosed for use with TeX. See
ORGTBL-SQL-STRIP-AND-QUOTE.
Supports all parameters from ORGTBL-TO-GENERIC. New to this function
are:
:sqlname The name of the database table; defaults to the name of the
target region.
:nowebname If not nil, used as a wrapping noweb fragment name.
The most important parameters of ORGTBL-TO-GENERIC for SQL are:
:splice When set to t, return only insert statements, don't wrap
them in a transaction. Default is nil.
:tstart, :tend
The strings used to begin and commit the transaction.
:hfmt A function that gathers the quoted header names into a
dynamically scoped variable HDRLIST. Probably should
not be changed by the user.
The general parameters :skip and :skipcols have already been applied when
this function is called."
(let* (hdrlist
(alignment (mapconcat (lambda (x) (if x "r" "l"))
org-table-last-alignment ""))
(nowebname (plist-get params :nowebname))
(breakvals (plist-get params :breakvals))
(firstheader t)
(*orgtbl-default-fmt* 'orgtbl-sql-strip-and-quote)
(params2
(list
:sqlname (plist-get params :sqlname)
:tstart (lambda () (concat (if nowebname
(format "<<%s>>= \n" nowebname)
"")
"BEGIN TRANSACTION;"))
:tend (lambda () (concat "COMMIT;" (if nowebname "\n@ " "")))
:hfmt (lambda (f) (progn (if firstheader (push f hdrlist) "")))
:hlfmt (lambda (&rest cells) (setq firstheader nil))
:lstart (lambda () (concat "INSERT INTO "
sqlname "( "
(mapconcat 'identity (reverse hdrlist)
", ")
" )" (if breakvals "\n" " ")
"VALUES ( "))
:lend " );"
:sep " , "
:hline nil
:remove-nil-lines t))
(params (org-combine-plists params2 params))
(sqlname (plist-get params :sqlname)))
(orgtbl-to-generic table params)))
(defun orgtbl-sql-quote (str)
"Convert single ticks to doubled single ticks and wrap in single ticks."
(concat "'" (mapconcat 'identity (split-string str "'") "''") "'"))
(defun orgtbl-sql-strip-dollars-escapes-tildes (str)
"Strip dollarsigns and backslash escapes, replace tildes with spaces."
(mapconcat 'identity
(split-string (mapconcat 'identity
(split-string str "\\$\\|\\\\")
"")
"~")
" "))
(defun orgtbl-sql-strip-and-quote (str)
"Apply ORGBTL-SQL-QUOTE and ORGTBL-SQL-STRIP-DOLLARS-ESCAPES-TILDES
to sanitize STR for use in SQL statements."
(cond ((stringp str)
(orgtbl-sql-quote (orgtbl-sql-strip-dollars-escapes-tildes str)))
((sequencep str) (mapcar 'orgtbl-sql-strip-and-quote str))
(t nil)))
(provide 'orgtbl-sqlinsert)
;;; orgtbl-sqlinsert.el ends here