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Diffstat (limited to 'lib/smarty/plugins/function.html_image.php')
| -rw-r--r-- | lib/smarty/plugins/function.html_image.php | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/lib/smarty/plugins/function.html_image.php b/lib/smarty/plugins/function.html_image.php new file mode 100644 index 0000000..6521966 --- /dev/null +++ b/lib/smarty/plugins/function.html_image.php @@ -0,0 +1,159 @@ +<?php +/** + * Smarty plugin + * + * @package Smarty + * @subpackage PluginsFunction + */ + +/** + * Smarty {html_image} function plugin + * + * Type: function<br> + * Name: html_image<br> + * Date: Feb 24, 2003<br> + * Purpose: format HTML tags for the image<br> + * Examples: {html_image file="/images/masthead.gif"}<br> + * Output: <img src="/images/masthead.gif" width=400 height=23><br> + * Params: + * <pre> + * - 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) + * </pre> + * + * @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 $template template object + * @return string + * @uses smarty_function_escape_special_chars() + */ +function smarty_function_html_image($params, $template) +{ + require_once(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($params['file'])) { + return; + } + } + } + + if (!isset($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 '$_image_path'", E_USER_NOTICE); + return; + } else if (!is_readable($_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; +} + +?>
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