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/*
* SPL - The SPL Programming Language
* Copyright (C) 2004, 2005 Clifford Wolf <clifford@clifford.at>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* mod_encode_int.spl: An encode_int() function for type checks
*/
/**
* Integer encoder
*/
/**
* This function gets a text as parameter and returns the portion of the text
* from the beginning which only consists of numbers. Deciamal numbers and
* negative numbers are not supported. If there is no number at the beginning
* of the passed text, 0 is returned.
*
* Whitespaces before the integer are ignored.
*
* The primary use of this function is to 'quote' integers in those cases where
* it is not possible to do real quoting but a user input needs to be quoted
* somehow for security. E.g. SQLite handles an integer differently when it is
* quoted as text and so quoting using [[sql:encode_sql()]] would work out.
*
* This function is designed to be used with the encoding/quoting operator (::).
*/
function encode_int(text)
{
return text =~ /^\s*([0-9]+)/ ? $1 : 0;
}
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