在元数据展示页面，根据mediawiki的表格格式添加表格支持

application/default/controllers/DataController.php

@@ -562,6 +562,8 @@ class DataController extends Zend_Controller_Action
     	$id=$row->id;
     	$uuid=$row->uuid;
     	$this->view->metadata=$row;
+    	//提前对表格进行预处理
+    	$this->view->metadata->description=$this->parseTable($this->view->escape($row->description));    	
     	if (is_numeric($row->projection)) 
     	{
     		$sql="select proj4text from spatial_ref_sys where auth_srid=?";
@@ -1076,5 +1078,182 @@ class DataController extends Zend_Controller_Action
 			}
 				 
     }
+    
+ 	/**
+	 * parse the wiki syntax used to render tables, code from mediawiki
+	 *
+	 * @private
+	 */
+	function parseTable ( $text ) {
+		$lines = explode ( "\n" , $text );
+		$td_history = array (); // Is currently a td tag open?
+		$last_tag_history = array (); // Save history of last lag activated (td, th or caption)
+		$tr_history = array (); // Is currently a tr tag open?
+		$tr_attributes = array (); // history of tr attributes
+		$has_opened_tr = array(); // Did this table open a <tr> element?
+		$indent_level = 0; // indent level of the table
+		foreach ( $lines as $key => $line )
+		{
+			$line = trim ( $line );
+
+			if( trim($line) == '' ) { // empty line, go to next line
+				continue;
+			}
+			$first_character = $line{0};
+			$matches = array();
+
+			if ( preg_match( '/^(:*)\{\|(.*)$/' , $line , $matches ) ) {
+				// First check if we are starting a new table
+				$indent_level = strlen( $matches[1] );
+
+				$lines[$key] = str_repeat( '<dl><dd>' , $indent_level ) . "<table{$attributes}>";
+				array_push ( $td_history , false );
+				array_push ( $last_tag_history , '' );
+				array_push ( $tr_history , false );
+				array_push ( $tr_attributes , '' );
+				array_push ( $has_opened_tr , false );
+			} else if ( count ( $td_history ) == 0 ) {
+				// Don't do any of the following
+				continue;
+			} else if ( substr ( $line , 0 , 2 ) == '|}' ) {
+				// We are ending a table
+				$line = '</table>' . substr ( $line , 2 );
+				$last_tag = array_pop ( $last_tag_history );
+
+				if ( !array_pop ( $has_opened_tr ) ) {
+					$line = "<tr><td></td></tr>{$line}";
+				}
+
+				if ( array_pop ( $tr_history ) ) {
+					$line = "</tr>{$line}";
+				}
+
+				if ( array_pop ( $td_history ) ) {
+					$line = "</{$last_tag}>{$line}";
+				}
+				array_pop ( $tr_attributes );
+				$lines[$key] = $line . str_repeat( '</dd></dl>' , $indent_level );
+			} else if ( substr ( $line , 0 , 2 ) == '|-' ) {
+				// Now we have a table row
+				$line = preg_replace( '#^\|-+#', '', $line );
+
+				$line = '';
+				$last_tag = array_pop ( $last_tag_history );
+				array_pop ( $has_opened_tr );
+				array_push ( $has_opened_tr , true );
+
+				if ( array_pop ( $tr_history ) ) {
+					$line = '</tr>';
+				}
+
+				if ( array_pop ( $td_history ) ) {
+					$line = "</{$last_tag}>{$line}";
+				}
+
+				$lines[$key] = $line;
+				array_push ( $tr_history , false );
+				array_push ( $td_history , false );
+				array_push ( $last_tag_history , '' );
+			}
+			else if ( $first_character == '|' || $first_character == '!' || substr ( $line , 0 , 2 )  == '|+' ) {
+				// This might be cell elements, td, th or captions
+				if ( substr ( $line , 0 , 2 ) == '|+' ) {
+					$first_character = '+';
+					$line = substr ( $line , 1 );
+				}
+
+				$line = substr ( $line , 1 );
+
+				if ( $first_character == '!' ) {
+					$line = str_replace ( '!!' , '||' , $line );
+				}
+
+				// Split up multiple cells on the same line.
+				// FIXME : This can result in improper nesting of tags processed
+				// by earlier parser steps, but should avoid splitting up eg
+				// attribute values containing literal "||".
+				$cells = explode( '||' , $line );
+
+				$lines[$key] = '';
+
+				// Loop through each table cell
+				foreach ( $cells as $cell )
+				{
+					$previous = '';
+					if ( $first_character != '+' )
+					{
+						$tr_after = array_pop ( $tr_attributes );
+						if ( !array_pop ( $tr_history ) ) {
+							$previous = "<tr{$tr_after}>\n";
+						}
+						array_push ( $tr_history , true );
+						array_push ( $tr_attributes , '' );
+						array_pop ( $has_opened_tr );
+						array_push ( $has_opened_tr , true );
+					}
+
+					$last_tag = array_pop ( $last_tag_history );
+
+					if ( array_pop ( $td_history ) ) {
+						$previous = "</{$last_tag}>{$previous}";
+					}
+
+					if ( $first_character == '|' ) {
+						$last_tag = 'td';
+					} else if ( $first_character == '!' ) {
+						$last_tag = 'th';
+					} else if ( $first_character == '+' ) {
+						$last_tag = 'caption';
+					} else {
+						$last_tag = '';
+					}
+
+					array_push ( $last_tag_history , $last_tag );
+
+					// A cell could contain both parameters and data
+					$cell_data = explode ( '|' , $cell , 2 );
+
+					// Bug 553: Note that a '|' inside an invalid link should not
+					// be mistaken as delimiting cell parameters
+					if ( strpos( $cell_data[0], '[[' ) !== false ) {
+						$cell = "{$previous}<{$last_tag}>{$cell}";
+					} else if ( count ( $cell_data ) == 1 )
+						$cell = "{$previous}<{$last_tag}>{$cell_data[0]}";
+					else {
+						$cell = "{$previous}<{$last_tag}>{$cell_data[1]}";
+					}
+
+					$lines[$key] .= $cell;
+					array_push ( $td_history , true );
+				}
+			}
+		}
+
+		// Closing open td, tr && table
+		while ( count ( $td_history ) > 0 )
+		{
+			if ( array_pop ( $td_history ) ) {
+				$lines[] = '</td>' ;
+			}
+			if ( array_pop ( $tr_history ) ) {
+				$lines[] = '</tr>' ;
+			}
+			if ( !array_pop ( $has_opened_tr ) ) {
+				$lines[] = "<tr><td></td></tr>" ;
+			}
+
+			$lines[] = '</table>' ;
+		}
+
+		$output = implode ( "\n" , $lines ) ;
+
+		// special case: don't return empty table
+		if( $output == "<table>\n<tr><td></td></tr>\n</table>" ) {
+			$output = '';
+		}
+
+		return $output;
+	}
+
 }
 

application/default/views/scripts/data/view.phtml

@@ -144,7 +144,7 @@ endforeach;
 <div id='map'></div>
 <div id="abstract">
 	<p>
-	<?php echo str_replace(array("\r\n", "\n", "\r"),'</p><p>',$this->escape($md->description));?>
+	<?php echo str_replace(array("\r\n", "\n", "\r"),'</p><p>',$md->description);?>
 	</p>	
 </div>
 <hr />