library/plugins/block.textformat.php

   1 <?php
   2 /**
   3  * Smarty plugin
   4  * @package Smarty
   5  * @subpackage plugins
   6  */
   7
   8 /**
   9  * Smarty {textformat}{/textformat} block plugin
  10  *
  11  * Type:     block function<br>
  12  * Name:     textformat<br>
  13  * Purpose:  format text a certain way with preset styles
  14  *           or custom wrap/indent settings<br>
  15  * @link http://smarty.php.net/manual/en/language.function.textformat.php {textformat}
  16  *       (Smarty online manual)
  17  * @param array
  18  * <pre>
  19  * Params:   style: string (email)
  20  *           indent: integer (0)
  21  *           wrap: integer (80)
  22  *           wrap_char string ("\n")
  23  *           indent_char: string (" ")
  24  *           wrap_boundary: boolean (true)
  25  * </pre>
  26  * @param string contents of the block
  27  * @param Smarty clever simulation of a method
  28  * @return string string $content re-formatted
  29  */
  30 function smarty_block_textformat($params, $content, &$smarty)
  31 {
  32     if (is_null($content)) {
  33         return;
  34     }
  35
  36     $style = null;
  37     $indent = 0;
  38     $indent_first = 0;
  39     $indent_char = ' ';
  40     $wrap = 80;
  41     $wrap_char = "\n";
  42     $wrap_cut = false;
  43     $assign = null;
  44
  45     foreach ($params as $_key => $_val) {
  46         switch ($_key) {
  47             case 'style':
  48             case 'indent_char':
  49             case 'wrap_char':
  50             case 'assign':
  51                 $$_key = (string)$_val;
  52                 break;
  53
  54             case 'indent':
  55             case 'indent_first':
  56             case 'wrap':
  57                 $$_key = (int)$_val;
  58                 break;
  59
  60             case 'wrap_cut':
  61                 $$_key = (bool)$_val;
  62                 break;
  63
  64             default:
  65                 $smarty->trigger_error("textformat: unknown attribute '$_key'");
  66         }
  67     }
  68
  69     if ($style == 'email') {
  70         $wrap = 72;
  71     }
  72
  73     // split into paragraphs
  74     $paragraphs = preg_split('![\r\n][\r\n]!',$content);
  75     $output = '';
  76
  77     foreach ($paragraphs as $paragraph) {
  78         if ($paragraph == '') {
  79             continue;
  80         }
  81         // convert mult. spaces & special chars to single space
  82         $paragraph = preg_replace(array('!\s+!','!(^\s+)|(\s+$)!'),array(' ',''),$paragraph);
  83         // indent first line
  84         if($indent_first > 0) {
  85             $paragraph = str_repeat($indent_char,$indent_first) . $paragraph;
  86         }
  87         // wordwrap sentences
  88         $paragraph = wordwrap($paragraph, $wrap - $indent, $wrap_char, $wrap_cut);
  89         // indent lines
  90         if($indent > 0) {
  91             $paragraph = preg_replace('!^!m',str_repeat($indent_char,$indent),$paragraph);
  92         }
  93         $output .= $paragraph . $wrap_char . $wrap_char;
  94     }
  95
  96     if ($assign) {
  97         $smarty->assign($assign,$output);
  98     } else {
  99         return $output;
 100     }
 101 }
 102
 103 /* vim: set expandtab: */
 104
 105 ?>