1 <?php

     2 /**

     3  * Smarty plugin

     4  * @package Smarty

     5  * @subpackage plugins

     6  */

     7 

     8 

     9 /**

    10  * Smarty {html_image} function plugin

    11  *

    12  * Type:     function<br>

    13  * Name:     html_image<br>

    14  * Date:     Feb 24, 2003<br>

    15  * Purpose:  format HTML tags for the image<br>

    16  * Input:<br>

    17  *         - file = file (and path) of image (required)

    18  *         - height = image height (optional, default actual height)

    19  *         - width = image width (optional, default actual width)

    20  *         - basedir = base directory for absolute paths, default

    21  *                     is environment variable DOCUMENT_ROOT

    22  *         - path_prefix = prefix for path output (optional, default empty)

    23  *

    24  * Examples: {html_image file="/images/masthead.gif"}

    25  * Output:   <img src="/images/masthead.gif" width=400 height=23>

    26  * @link http://smarty.php.net/manual/en/language.function.html.image.php {html_image}

    27  *      (Smarty online manual)

    28  * @author   Monte Ohrt <monte at ohrt dot com>

    29  * @author credits to Duda <duda@big.hu> - wrote first image function

    30  *           in repository, helped with lots of functionality

    31  * @version  1.0

    32  * @param array

    33  * @param Smarty

    34  * @return string

    35  * @uses smarty_function_escape_special_chars()

    36  */

    37 function smarty_function_html_image($params, &$smarty)

    38 {

    39     require_once $smarty->_get_plugin_filepath('shared','escape_special_chars');

    40     

    41     $alt = '';

    42     $file = '';

    43     $height = '';

    44     $width = '';

    45     $extra = '';

    46     $prefix = '';

    47     $suffix = '';

    48     $path_prefix = '';

    49     $server_vars = ($smarty->request_use_auto_globals) ? $_SERVER : $GLOBALS['HTTP_SERVER_VARS'];

    50     $basedir = isset($server_vars['DOCUMENT_ROOT']) ? $server_vars['DOCUMENT_ROOT'] : '';

    51     foreach($params as $_key => $_val) {

    52         switch($_key) {

    53             case 'file':

    54             case 'height':

    55             case 'width':

    56             case 'dpi':

    57             case 'path_prefix':

    58             case 'basedir':

    59                 $$_key = $_val;

    60                 break;

    61 

    62             case 'alt':

    63                 if(!is_array($_val)) {

    64                     $$_key = smarty_function_escape_special_chars($_val);

    65                 } else {

    66                     $smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);

    67                 }

    68                 break;

    69 

    70             case 'link':

    71             case 'href':

    72                 $prefix = '<a href="' . $_val . '">';

    73                 $suffix = '</a>';

    74                 break;

    75 

    76             default:

    77                 if(!is_array($_val)) {

    78                     $extra .= ' '.$_key.'="'.smarty_function_escape_special_chars($_val).'"';

    79                 } else {

    80                     $smarty->trigger_error("html_image: extra attribute '$_key' cannot be an array", E_USER_NOTICE);

    81                 }

    82                 break;

    83         }

    84     }

    85 

    86     if (empty($file)) {

    87         $smarty->trigger_error("html_image: missing 'file' parameter", E_USER_NOTICE);

    88         return;

    89     }

    90 

    91     if (substr($file,0,1) == '/') {

    92         $_image_path = $basedir . $file;

    93     } else {

    94         $_image_path = $file;

    95     }

    96     

    97     if(!isset($params['width']) || !isset($params['height'])) {

    98         if(!$_image_data = @getimagesize($_image_path)) {

    99             if(!file_exists($_image_path)) {

   100                 $smarty->trigger_error("html_image: unable to find '$_image_path'", E_USER_NOTICE);

   101                 return;

   102             } else if(!is_readable($_image_path)) {

   103                 $smarty->trigger_error("html_image: unable to read '$_image_path'", E_USER_NOTICE);

   104                 return;

   105             } else {

   106                 $smarty->trigger_error("html_image: '$_image_path' is not a valid image file", E_USER_NOTICE);

   107                 return;

   108             }

   109         }

   110         if ($smarty->security &&

   111             ($_params = array('resource_type' => 'file', 'resource_name' => $_image_path)) &&

   112             (require_once(SMARTY_CORE_DIR . 'core.is_secure.php')) &&

   113             (!smarty_core_is_secure($_params, $smarty)) ) {

   114             $smarty->trigger_error("html_image: (secure) '$_image_path' not in secure directory", E_USER_NOTICE);

   115         }        

   116         

   117         if(!isset($params['width'])) {

   118             $width = $_image_data[0];

   119         }

   120         if(!isset($params['height'])) {

   121             $height = $_image_data[1];

   122         }

   123 

   124     }

   125 

   126     if(isset($params['dpi'])) {

   127         if(strstr($server_vars['HTTP_USER_AGENT'], 'Mac')) {

   128             $dpi_default = 72;

   129         } else {

   130             $dpi_default = 96;

   131         }

   132         $_resize = $dpi_default/$params['dpi'];

   133         $width = round($width * $_resize);

   134         $height = round($height * $_resize);

   135     }

   136 

   137     return $prefix . '<img src="'.$path_prefix.$file.'" alt="'.$alt.'" width="'.$width.'" height="'.$height.'"'.$extra.' />' . $suffix;

   138 }

   139 

   140 /* vim: set expandtab: */

   141 

   142 ?>