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HTML预览正则替换

时间：2021-07-01 10:21:17 帮助过：8人阅读

HTML预览 正则替换
  1. /**
  2. * HTML替换处理类，考虑如下几种替换
  3. * 1. img src : '/]+?)/i'
  4. * 2. a href : '/]+?)/i'
  5. * 3. ifram.src : '/]+?)/i'
  6. * 4. frame src : '/]+?)/i'
  7. * 5. js : '/window.open([( ]+?)([\'" ]+?)(.+?)([ )+?])/i'
  8. * 6. css : '/background(.+?)url([( ])([\'" ]+?)(.+?)([ )+?])/i'
  9. */
  10. class Myreplace {
  11. private $moudle_array = array('udata','tdata','tresult','dresult');
  12. private $content;
  13. private $relative_dirname;
  14. private $projectid;
  15. private $moudle;
  16. function __construct() {
  17. $this->CI = &get_instance ();
  18. }
  20. /**
  21. * 替换
  22. * @param string $content HTML内容
  23. * @param string $relative 相对路径
  24. * @param int $projectid 项目id
  25. * @moudle string $moudle 模板标识: udata,tdata,tresult,dresult
  26. */
  27. public function my_replace($content,$relative,$projectid,$moudle) {
  28. $this->content = $content;
  29. $this->relative_dirname = $relative;
  30. $this->projectid = $projectid;
  31. if(in_array(strtolower($moudle),$this->moudle_array))
  32. $this->moudle = $moudle;
  33. else exit;
  34. switch($this->moudle) {
  35. case 'udata':
  36. $this->CI->load->model('mupload_data','model');
  37. break;
  38. case 'tdata':
  39. $this->CI->load->model('taskdata','model');
  40. break;
  41. case 'tresult':
  42. $this->CI->load->model('taskresult','model');
  43. break;
  44. case 'dresult':
  45. $this->CI->load->model('dmsresult','model');
  46. break;
  47. default:
  48. break;
  49. }
  51. $pattern = '/]+?)/i';
  52. $content = preg_replace_callback( $pattern, array($this, 'image_replace') , $content );
  53. $pattern = '/]+?)/i';
  54. $content = preg_replace_callback( $pattern, array($this, 'html_replace') , $content );
  55. $pattern = '/]+?)/i';
  56. $content = preg_replace_callback( $pattern, array($this, 'iframe_replace') , $content );
  57. $pattern = '/]+?)/i';
  58. $content = preg_replace_callback( $pattern, array($this, 'frame_replace'), $content );
  59. $pattern = '/window.open([( ]+?)([\'" ]+?)(.+?)([ )]+?)/i';
  60. $content = preg_replace_callback( $pattern, array($this, 'js_replace'), $content );
  61. $pattern = '/background(.+?)url([( ])([\'" ]+?)(.+?)([ )+?])/i';
  62. $content = preg_replace_callback( $pattern, array($this, 'css_replace'), $content);
  63. return $content;
  64. }
  66. private function image_replace($matches) {
  67. if(count($matches) < 4) return '';
  68. if( empty($matches[3]) ) return '';
  69. $matches[3] = rtrim($matches[3],'\'"/');
  70. //获取图片的id
  71. $parent_dir_num = substr_count( $matches[3], '../');
  72. $relative_dirname = $this->relative_dirname;
  73. for($i=0; $i<$parent_dir_num; $i++) {
  74. $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
  75. }
  76. $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./');
  77. $image_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);
  78. //输出
  79. if( !empty($image_id) ) {
  80. if($this->moudle == 'dresult') {
  81. return "CI->config->item("base_url")."cdms/".$this->moudle."/readpic/$image_id?pid=".$this->projectid .$matches[2]. $matches[4];
  82. } else {
  83. return "CI->config->item("base_url")."cdms/".$this->moudle."/picfile/$image_id?pid=".$this->projectid .$matches[2]. $matches[4];
  84. }
  85. } else {
  86. return " }
  87. }
  89. private function html_replace( $matches ) {
  90. if(count($matches) < 4) return '';
  91. if( empty($matches[3]) ) return '';
  92. //如果href的链接($matches[3])以http或www或mailto开始，则不进行处理
  93. //if(preg_match('/^[http|www|mailto](.+?)/i',$matches[3]))
  94. // return " $matches[3] = rtrim($matches[3],'\'"/');
  95. //处理锚点
  96. if(substr_count($matches[3],'#')>0)
  97. $matches[3] = substr($matches[3],0,strrpos($matches[3],'#'));
  98. //获取html的id
  99. $parent_dir_num = substr_count( $matches[3], '../');
  100. $relative_dirname = $this->relative_dirname;
  101. for($i=0; $i<$parent_dir_num; $i++) {
  102. $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
  103. }
  104. $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./');
  105. $txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);
  106. //输出
  107. if( !empty($txtfile_id ) ) {
  108. if($this->moudle == 'dresult') {
  109. return "CI->config->item("base_url")."cdms/".$this->moudle."/readfile/$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4];
  110. } else {
  111. return "CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4];
  112. }
  113. } else {
  114. return " }
  115. }
  117. private function iframe_replace( $matches ) {
  118. if(count($matches) < 4) return '';
  119. if( empty($matches[3]) ) return '';
  120. $matches[3] = rtrim($matches[3],'\'"/');
  122. //处理锚点
  123. if(substr_count($matches[3],'#')>0)
  124. $matches[3] = substr($matches[3],0,strrpos($matches[3],'#'));
  125. //获取html的id
  126. $parent_dir_num = substr_count( $matches[3], '../');
  127. $relative_dirname = $this->relative_dirname;
  128. for($i=0; $i<$parent_dir_num; $i++) {
  129. $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
  130. }
  131. $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./');
  132. $txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);
  133. //输出
  134. if( !empty($txtfile_id ) ) {
  135. if($this->moudle == 'dresult') {
  136. return "CI->config->item("base_url")."cdms/".$this->moudle."/readfile/$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4];
  137. } else {
  138. return "CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid .$matches[2].$matches[4];
  139. }
  140. } else {
  141. return " }
  142. }
  144. private function frame_replace( $matches ) {
  145. if(count($matches) < 4) return '';
  146. if( empty($matches[3]) ) return '';
  147. $matches[3] = rtrim($matches[3],'\'"/');
  148. //处理锚点
  149. if(substr_count($matches[3],'#')>0)
  150. $matches[3] = substr($matches[3],0,strrpos($matches[3],'#'));
  151. //获取html的id
  152. $parent_dir_num = substr_count( $matches[3], '../');
  153. $relative_dirname = $this->relative_dirname;
  154. for($i=0; $i<$parent_dir_num; $i++) {
  155. $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
  156. }
  157. $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./');
  158. $txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);
  159. //输出
  160. if( !empty($txtfile_id ) ) {
  161. if($this->moudle == 'dresult') {
  162. return "CI->config->item("base_url")."cdms/".$this->moudle."/readfile/$txtfile_id?pid=".$this->projectid.$matches[2].$matches[4];
  163. } else {
  164. return "CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid.$matches[2].$matches[4];
  165. }
  166. } else {
  167. return " }
  168. }
  170. private function js_replace( $matches ){
  171. if(count($matches) < 4) return '';
  172. if( empty($matches[3]) ) return '';
  173. //处理链接
  174. $arr_html = split(',',$matches[3]);
  175. $href = $arr_html[0];
  176. $other = '';
  177. for($i=0; $i $other = $arr_html[$i].", ";
  178. $other = rtrim($other,"\, ");
  179. $href =rtrim($href,'\'\"');
  180. //处理锚点
  181. if(substr_count($href,'#')>0)
  182. return "window.open".$matches[1].$matches[2].$matches[3].$matches[4];;
  183. //获取html的id
  184. $parent_dir_num = substr_count( $href, '../');
  185. $relative_dirname = $this->relative_dirname;
  186. for($i=0; $i<$parent_dir_num; $i++) {
  187. $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
  188. }
  189. $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($href,'./');
  190. $txtfile_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);
  191. //输出
  192. if( !empty($txtfile_id ) ) {
  193. if($this->moudle == 'dresult') {
  194. return "window.open".$matches[1]https://img.gxlcms.com/https://img.gxlcms.com/.$matches[2].$this->CI->config->item("base_url")."cdms/".$this->moudle."/readfile/$txtfile_id?pid=".$this->projectid.$matches[2].','.$other.$matches[4];
  195. } else {
  196. return "window.open".$matches[1]https://img.gxlcms.com/https://img.gxlcms.com/.$matches[2].$this->CI->config->item("base_url")."cdms/".$this->moudle."/txtfile/$txtfile_id?pid=".$this->projectid.$matches[2].','.$other.$matches[4];
  197. }
  198. } else {
  199. return "window.open".$matches[1].$matches[2].$matches[3].$matches[4];
  200. }
  201. }
  203. private function css_replace( $matches ) {
  204. if(count($matches) < 5) return '';
  205. if( empty($matches[4]) ) return '';
  207. $matches[4] = rtrim($matches[4],'\'"/');
  208. //获取图片的id
  209. $parent_dir_num = substr_count( $matches[4], '../');
  210. $relative_dirname = $this->relative_dirname;
  211. for($i=0; $i<$parent_dir_num; $i++) {
  212. $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") );
  213. }
  214. $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[4],'./');
  215. $image_id = $this->CI->model->get_id_by_path_and_project($relativepath,$this->projectid);
  216. //输出
  217. if( !empty($image_id) ) {
  218. if($this->moudle == 'dresult') {
  219. return "background".$matches[1]."url".$matches[2].$matches[3].$this->CI->config->item("base_url")."cdms/".$this->moudle."/readpic/$image_id?pid=".$this->projectid .$matches[3]. $matches[5];
  220. } else {
  221. return "background".$matches[1]."url".$matches[2].$matches[3].$this->CI->config->item("base_url")."cdms/".$this->moudle."/picfile/$image_id?pid=".$this->projectid .$matches[3]. $matches[5];
  222. }
  223. } else {
  224. return "background".$matches[1]."url".$matches[2].$matches[3].$matches[4].$matches[3].$matches[5];
  225. }
  226. }
  227. }
  229. /* End of Myreplace.php */
  230. /* Location: /application/libraries/Myreplace.php */

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