/
retina.php
75 lines (66 loc) · 3 KB
/
retina.php
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<?php
################################################################################
# Copyright (c) 2009, Jean-David Gadina <macmade@xs-labs.com> #
# All rights reserved. #
# #
# Redistribution and use in source and binary forms, with or without #
# modification, are permitted provided that the following conditions are met: #
# #
# - Redistributions of source code must retain the above copyright notice, #
# this list of conditions and the following disclaimer. #
# - Redistributions in binary form must reproduce the above copyright #
# notice, this list of conditions and the following disclaimer in the #
# documentation and/or other materials provided with the distribution. #
# - Neither the name of 'Jean-David Gadina' nor the names of its #
# contributors may be used to endorse or promote products derived from #
# this software without specific prior written permission. #
# #
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" #
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE #
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE #
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE #
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR #
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF #
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS #
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN #
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) #
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE #
# POSSIBILITY OF SUCH DAMAGE. #
################################################################################
# $Id$
if( !isset( $_SERVER[ 'REQUEST_URI' ] ) )
{
exit( 0 );
}
$REQUEST = $_SERVER[ 'REQUEST_URI' ];
$ROOT = str_replace( $_SERVER[ 'SCRIPT_NAME' ], '', $_SERVER[ 'SCRIPT_FILENAME' ] );
$PATH = str_replace( '/', DIRECTORY_SEPARATOR, $REQUEST );
$IMG = $ROOT . $PATH;
$POS = strrpos( $IMG, '.' );
if( $POS === false )
{
exit( 0 );
}
$EXT = substr( $IMG, $POS );
$RETINA = substr( $IMG, 0, $POS ) . '@2x' . $EXT;
if( $EXT == '.png' )
{
header( 'Content-type: image/png' );
}
else if( $EXT == '.jpg' || $EXT == '.jpeg' )
{
header( 'Content-type: image/jpeg' );
}
else if( $EXT == '.gif' )
{
header( 'Content-type: image/gif' );
}
if( file_exists( $RETINA ) )
{
readfile( $RETINA );
}
else if( file_exists( $IMG ) )
{
readfile( $IMG );
}
exit( 0 );