Imap (#31)

* Adding support for image maps * working on regexes * Replaces area tag's href with url local to ebook * added some documentation * Fixed xml declaration at top of toc.ncx, no longer generates .ncx error and now reads image map in Readium
turnermm · Sep 10, 2019 · bd4b590 · bd4b590
1 parent 13e4a89
commit bd4b590
Show file tree

Hide file tree

Showing 2 changed files with 42 additions and 1 deletion.
diff --git a/scripts/ebook.php b/scripts/ebook.php
@@ -73,6 +73,47 @@ function create($id, $user_title=false) {
 
 			$xhtml = $Renderer->doc;
 			$result .= $xhtml;			
+            //handle image maps
+            if(strpos($result, 'usemap') !== false) {			
+            $R = $Renderer;
+			$result = preg_replace_callback(				
+                     '|<img\s+src=\"(.*?)\"(.*?usemap.*?)>|im',
+				   function($matches)  use($R) {    
+                   if(strpos( $matches[1],'?') !== false) {
+                       list($pre, $img) = explode('=', $matches[1]);
+                   }
+                   else $img =  basename($matches[1]);                 
+
+                    $name = '../'. $R->copy_media($img);
+                    echo "Map image name = $name\n";
+                      return '<img src="' . $name . '"' . $matches[2] . '>';
+					},
+					$result
+                   );			
+             //Convert internal links to localized epub links      
+			$result = preg_replace_callback(				
+                     '|<area(.*?)>|im',	
+                   function($matches) {
+					   if(strpos($matches[0], 'http') !== false) return $matches[0];  	//External link, no conversioon needed				
+					   $matches[0]= preg_replace_callback(
+					      '|href\s*=\s*([\"\'])(.*?)\1|m',     //test $matches[0]
+					      function($m) {
+							  if(stripos($m[0],'javascript:') !== false) {
+							     return $m[0];   // we do no convert javascript links
+							  }
+                            $patterns = array('!^' . preg_quote(DOKU_BASE) . '!', "/^doku.php/","!^\?\s*id\s*=\s*!");           
+                            $_REQUEST['epubid'] = preg_replace($patterns,  "", $m[2]);
+                            $id = getID('epubid') . '.html' ;   
+                            $id = "../Text/" . str_replace(':','_',$id) ;                        
+                            echo "revised url: " . htmlentities($id)."\n";
+                            return "href='$id'";                            
+						  },$matches[0]);
+					   return $matches[0];
+				   }, $result
+
+                  );  				   
+
+            } 
 			$result .= "\n</div></body></html>\n";		
 			$result =  preg_replace_callback("/&(\w+);/m", "epbub_entity_replace", $result );  				
 			$result = preg_replace("/(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+/m", "\n", $result);	

diff --git a/scripts/epub_utils.php b/scripts/epub_utils.php
@@ -59,7 +59,7 @@ function epub_opf_header($user_title) {
 			flush();
 
         $ncx=<<<NCX
- <?xml version="1.0" encoding="utf-8" ?>      
+<?xml version="1.0"?>      
 <!DOCTYPE ncx PUBLIC "-//NISO//DTD ncx 2005-1//EN"
  "http://www.daisy.org/z3986/2005/ncx-2005-1.dtd"><ncx version="2005-1" xml:lang="en" xmlns="http://www.daisy.org/z3986/2005/ncx/"> 
   <head>