1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
6 ;;;; Purpose: SQL utility functions
7 ;;;; Programmer: Kevin M. Rosenberg
8 ;;;; Date Started: Mar 2002
10 ;;;; $Id: utils.cl,v 1.2 2002/03/27 05:04:19 kevin Exp $
12 ;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
14 ;;;; CLSQL users are granted the rights to distribute and use this software
15 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
16 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
17 ;;;; *************************************************************************
19 (declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
20 (in-package :clsql-sys)
22 (defun number-to-sql-string (num)
27 (float-to-sql-string (coerce num 'double-float)))
29 (float-to-sql-string num))))
31 (defun float-to-sql-string (num)
32 "Convert exponent character for SQL"
33 (substitute #\e #\f (substitute #\e #\d (write-to-string num :readably t))))
35 (defun sql-escape-quotes (s)
36 "Escape single quotes for SQL"
37 (substitute-string-for-char s #\' "''"))
39 (defun substitute-string-for-char (procstr match-char subst-str)
40 "Substitutes a string for a single matching character of a string"
41 (let ((pos (position match-char procstr)))
44 (subseq procstr 0 pos) subst-str
45 (substitute-string-for-char
46 (subseq procstr (1+ pos)) match-char subst-str))