0,0 → 1,158 |
<?php |
/** |
* Smarty plugin |
* |
* @package Smarty |
* @subpackage PluginsFunction |
*/ |
/** |
* Smarty {html_image} function plugin |
* Type: function |
* Name: html_image |
* Date: Feb 24, 2003 |
* Purpose: format HTML tags for the image |
* Examples: {html_image file="/images/masthead.gif"} |
* Output: <img src="/images/masthead.gif" width=400 height=23> |
* Params: |
* |
* - file - (required) - file (and path) of image |
* - height - (optional) - image height (default actual height) |
* - width - (optional) - image width (default actual width) |
* - basedir - (optional) - base directory for absolute paths, default is environment variable DOCUMENT_ROOT |
* - path_prefix - prefix for path output (optional, default empty) |
* |
* @link http://www.smarty.net/manual/en/language.function.html.image.php {html_image} |
* (Smarty online manual) |
* @author Monte Ohrt <monte at ohrt dot com> |
* @author credits to Duda <duda@big.hu> |
* @version 1.0 |
* |
* @param array $params parameters |
* @param Smarty_Internal_Template $template template object |
* |
* @throws SmartyException |
* @return string |
* @uses smarty_function_escape_special_chars() |
*/ |
function smarty_function_html_image($params, Smarty_Internal_Template $template) |
{ |
$template->_checkPlugins( |
array( |
array( |
'function' => 'smarty_function_escape_special_chars', |
'file' => SMARTY_PLUGINS_DIR . 'shared.escape_special_chars.php' |
) |
) |
); |
$alt = ''; |
$file = ''; |
$height = ''; |
$width = ''; |
$extra = ''; |
$prefix = ''; |
$suffix = ''; |
$path_prefix = ''; |
$basedir = isset($_SERVER[ 'DOCUMENT_ROOT' ]) ? $_SERVER[ 'DOCUMENT_ROOT' ] : ''; |
foreach ($params as $_key => $_val) { |
switch ($_key) { |
case 'file': |
case 'height': |
case 'width': |
case 'dpi': |
case 'path_prefix': |
case 'basedir': |
$$_key = $_val; |
break; |
case 'alt': |
if (!is_array($_val)) { |
$$_key = smarty_function_escape_special_chars($_val); |
} else { |
throw new SmartyException( |
"html_image: extra attribute '{$_key}' cannot be an array", |
E_USER_NOTICE |
); |
} |
break; |
case 'link': |
case 'href': |
$prefix = '<a href="' . $_val . '">'; |
$suffix = '</a>'; |
break; |
default: |
if (!is_array($_val)) { |
$extra .= ' ' . $_key . '="' . smarty_function_escape_special_chars($_val) . '"'; |
} else { |
throw new SmartyException( |
"html_image: extra attribute '{$_key}' cannot be an array", |
E_USER_NOTICE |
); |
} |
break; |
} |
} |
if (empty($file)) { |
trigger_error('html_image: missing \'file\' parameter', E_USER_NOTICE); |
return; |
} |
if ($file[ 0 ] === '/') { |
$_image_path = $basedir . $file; |
} else { |
$_image_path = $file; |
} |
// strip file protocol |
if (stripos($params[ 'file' ], 'file://') === 0) { |
$params[ 'file' ] = substr($params[ 'file' ], 7); |
} |
$protocol = strpos($params[ 'file' ], '://'); |
if ($protocol !== false) { |
$protocol = strtolower(substr($params[ 'file' ], 0, $protocol)); |
} |
if (isset($template->smarty->security_policy)) { |
if ($protocol) { |
// remote resource (or php stream, …) |
if (!$template->smarty->security_policy->isTrustedUri($params[ 'file' ])) { |
return; |
} |
} else { |
// local file |
if (!$template->smarty->security_policy->isTrustedResourceDir($_image_path)) { |
return; |
} |
} |
} |
if (!isset($params[ 'width' ]) || !isset($params[ 'height' ])) { |
// FIXME: (rodneyrehm) getimagesize() loads the complete file off a remote resource, use custom [jpg,png,gif]header reader! |
if (!$_image_data = @getimagesize($_image_path)) { |
if (!file_exists($_image_path)) { |
trigger_error("html_image: unable to find '{$_image_path}'", E_USER_NOTICE); |
return; |
} elseif (!is_readable($_image_path)) { |
trigger_error("html_image: unable to read '{$_image_path}'", E_USER_NOTICE); |
return; |
} else { |
trigger_error("html_image: '{$_image_path}' is not a valid image file", E_USER_NOTICE); |
return; |
} |
} |
if (!isset($params[ 'width' ])) { |
$width = $_image_data[ 0 ]; |
} |
if (!isset($params[ 'height' ])) { |
$height = $_image_data[ 1 ]; |
} |
} |
if (isset($params[ 'dpi' ])) { |
if (strstr($_SERVER[ 'HTTP_USER_AGENT' ], 'Mac')) { |
// FIXME: (rodneyrehm) wrong dpi assumption |
// don't know who thought this up… even if it was true in 1998, it's definitely wrong in 2011. |
$dpi_default = 72; |
} else { |
$dpi_default = 96; |
} |
$_resize = $dpi_default / $params[ 'dpi' ]; |
$width = round($width * $_resize); |
$height = round($height * $_resize); |
} |
return $prefix . '<img src="' . $path_prefix . $file . '" alt="' . $alt . '" width="' . $width . '" height="' . |
$height . '"' . $extra . ' />' . $suffix; |
} |