htdocs/lib/ContentProvider.class.php

   1 <?php
   2 /* ContentProvider.class.php - phpgitweb
   3  * Copyright (C) 2011-2012  Philipp Kreil (pk910)
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 class ContentProvider {
  20     private static $template_cache = array();
  21         private static $overall_content = array();
  22
  23         private $template, $subtemplate;
  24         private $content = array();
  25
  26     public function __construct($template, $subtemplate, $content = null) {
  27                 $this->template = $template;
  28                 $this->subtemplate = $subtemplate;
  29
  30                 if(is_array($content)) {
  31                         $this->content = $content;
  32                 }
  33         }
  34
  35         public function set($name, $value) {
  36                 $this->content[strtolower($name)] = $value;
  37         }
  38
  39         public function append($name, $value) {
  40                 if(!$value)
  41                         return;
  42                 if(!array_key_exists(strtolower($name), $this->content))
  43                         $this->content[strtolower($name)] = array();
  44                 if(!is_array($this->content[strtolower($name)]))
  45                         $this->content[strtolower($name)] = array($this->content[strtolower($name)]);
  46                 $this->content[strtolower($name)][] = $value;
  47         }
  48
  49         public static function overall_set($name, $value) {
  50                 self::$overall_content[strtolower($name)] = $value;
  51         }
  52
  53         private function load_template($template, $subtemplate) {
  54                 $tpl_name = 'templates/'.(GitConfig::TEMPLATE_NAME ? GitConfig::TEMPLATE_NAME : 'default').'/'.$template.'.tpl';
  55                 if(!file_exists($tpl_name))
  56                         return null;
  57                 $tpl = file($tpl_name);
  58                 self::$template_cache[$template] = array();
  59
  60                 $cname = null;
  61                 foreach ($tpl as $line) {
  62                         if(preg_match('/^# \[(.*)\]/i', $line, $result)) {
  63                                 $cname = $result[1];
  64                                 self::$template_cache[$template][$cname] = '';
  65                         } else if($cname)
  66                                 self::$template_cache[$template][$cname] .= $line;
  67                 }
  68
  69                 return (array_key_exists($subtemplate, self::$template_cache[$template]) ? self::$template_cache[$template][$subtemplate] : null);
  70         }
  71
  72         private function replace_placeholder($result) {
  73                 $var = strtolower($result[1]);
  74                 switch($var) {
  75                 case "version":
  76                         $rep = PHPGITWEB_VERSION;
  77                         break;
  78                 case "year":
  79                         $rep = date("Y");
  80                         break;
  81                 case "rendertime":
  82                         $rep = "%rendertime%"; //gets replaced later
  83                         break;
  84                 default:
  85                         if(array_key_exists($var, $this->content)) {
  86                                 $rep = $this->resolve_content($this->content[$var]);
  87                         } else if(array_key_exists($var, self::$overall_content)) {
  88                                 $rep = $this->resolve_content(self::$overall_content[$var]);
  89                         } else
  90                                 $rep = $var;
  91                 }
  92                 return $rep;
  93         }
  94
  95         private function resolve_content($content) {
  96                 $output = "";
  97                 if(is_array($content)) {
  98                         foreach($content as $part) {
  99                                 $output .= $this->resolve_content($part);
 100                         }
 101                 } elseif(is_a($content, "ContentProvider"))
 102                         $output = $content->output();
 103                 else
 104                         $output = $content;
 105                 return $output;
 106         }
 107
 108         public function output() {
 109                 $subtemplate = strtolower($this->subtemplate);
 110                 if(array_key_exists($this->template, self::$template_cache))
 111                         $template_html = (array_key_exists($subtemplate, self::$template_cache[$this->template]) ? self::$template_cache[$this->template][$subtemplate] : null);
 112                 else {
 113                         $template_html = $this->load_template($this->template, $subtemplate);
 114                 }
 115                 $template_html = preg_replace_callback('/%([^%]*)%/', array($this, "replace_placeholder"), $template_html);
 116                 $template_html = preg_replace_callback('/%([^%]*)%/', array($this, "replace_placeholder"), $template_html);
 117
 118                 return $template_html;
 119         }
 120
 121 }
 122
 123 ?>