compact fo:inline's in FO output of Word-to-FO converter

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1149087 13f79535-47bb-0310-9956-ffa450edef68

src/scratchpad/src/org/apache/poi/hwpf/converter/AbstractWordUtils.java

@@ -31,6 +31,11 @@ import org.apache.poi.hwpf.usermodel.BorderCode;
 import org.apache.poi.hwpf.usermodel.Paragraph;
 import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 import org.apache.poi.util.IOUtils;
+import org.w3c.dom.Attr;
+import org.w3c.dom.Element;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
 
 public class AbstractWordUtils
 {
@@ -39,6 +44,61 @@ public class AbstractWordUtils
     public static final float TWIPS_PER_INCH = 1440.0f;
     public static final int TWIPS_PER_PT = 20;
 
+    static boolean canBeMerged( Node node1, Node node2, String requiredTagName )
+    {
+        if ( node1.getNodeType() != Node.ELEMENT_NODE
+                || node2.getNodeType() != Node.ELEMENT_NODE )
+            return false;
+
+        Element element1 = (Element) node1;
+        Element element2 = (Element) node2;
+
+        if ( !equals( requiredTagName, element1.getTagName() )
+                || !equals( requiredTagName, element2.getTagName() ) )
+            return false;
+
+        NamedNodeMap attributes1 = element1.getAttributes();
+        NamedNodeMap attributes2 = element2.getAttributes();
+
+        if ( attributes1.getLength() != attributes2.getLength() )
+            return false;
+
+        for ( int i = 0; i < attributes1.getLength(); i++ )
+        {
+            final Attr attr1 = (Attr) attributes1.item( i );
+            final Attr attr2;
+            if ( isNotEmpty( attr1.getNamespaceURI() ) )
+                attr2 = (Attr) attributes2.getNamedItemNS(
+                        attr1.getNamespaceURI(), attr1.getLocalName() );
+            else
+                attr2 = (Attr) attributes2.getNamedItem( attr1.getName() );
+
+            if ( attr2 == null
+                    || !equals( attr1.getTextContent(), attr2.getTextContent() ) )
+                return false;
+        }
+
+        return true;
+    }
+
+    static void compactChildNodes( Element parentElement, String childTagName )
+    {
+        NodeList childNodes = parentElement.getChildNodes();
+        for ( int i = 0; i < childNodes.getLength() - 1; i++ )
+        {
+            Node child1 = childNodes.item( i );
+            Node child2 = childNodes.item( i + 1 );
+            if ( !WordToFoUtils.canBeMerged( child1, child2, childTagName ) )
+                continue;
+
+            // merge
+            while ( child2.getChildNodes().getLength() > 0 )
+                child1.appendChild( child2.getFirstChild() );
+            child2.getParentNode().removeChild( child2 );
+            i--;
+        }
+    }
+
     static boolean equals( String str1, String str2 )
     {
         return str1 == null ? str2 == null : str1.equals( str2 );

src/scratchpad/src/org/apache/poi/hwpf/converter/WordToFoConverter.java

@@ -295,6 +295,8 @@ public class WordToFoConverter extends AbstractWordConverter
         {
             blocksProperies.pop();
         }
+
+        WordToFoUtils.compactInlines( endnote );
         this.endnotes.add( endnote );
     }
 
@@ -337,6 +339,8 @@ public class WordToFoConverter extends AbstractWordConverter
         {
             blocksProperies.pop();
         }
+
+        WordToFoUtils.compactInlines( footnoteBlock );
     }
 
     protected void processHyperlink( HWPFDocumentCore wordDocument,
@@ -456,6 +460,7 @@ public class WordToFoConverter extends AbstractWordConverter
             blocksProperies.pop();
         }
 
+        WordToFoUtils.compactInlines( block );
         return;
     }
 

src/scratchpad/src/org/apache/poi/hwpf/converter/WordToFoUtils.java

@@ -26,6 +26,11 @@ import org.w3c.dom.Element;
 
 public class WordToFoUtils extends AbstractWordUtils
 {
+    static void compactInlines( Element blockElement )
+    {
+        compactChildNodes( blockElement, "fo:inline" );
+    }
+
     public static void setBold( final Element element, final boolean bold )
     {
         element.setAttribute( "font-weight", bold ? "bold" : "normal" );

src/scratchpad/src/org/apache/poi/hwpf/converter/WordToHtmlConverter.java

@@ -45,8 +45,6 @@ import org.apache.poi.util.POILogFactory;
 import org.apache.poi.util.POILogger;
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
-import org.w3c.dom.Node;
-import org.w3c.dom.NodeList;
 import org.w3c.dom.Text;
 
 import static org.apache.poi.hwpf.converter.AbstractWordUtils.TWIPS_PER_INCH;
@@ -526,32 +524,7 @@ public class WordToHtmlConverter extends AbstractWordConverter
                     htmlDocumentFacade.getOrCreateCssClass(
                             pElement.getTagName(), "p", style.toString() ) );
 
-        {
-            // compact spans
-            NodeList childNodes = pElement.getChildNodes();
-            for ( int i = 0; i < childNodes.getLength() - 1; i++ )
-            {
-                Node child1 = childNodes.item( i );
-                Node child2 = childNodes.item( i + 1 );
-                if ( child1.getNodeType() != Node.ELEMENT_NODE
-                        || child2.getNodeType() != Node.ELEMENT_NODE
-                        || !WordToHtmlUtils.equals( "span",
-                                ( (Element) child1 ).getTagName() )
-                        || !WordToHtmlUtils.equals( "span",
-                                ( (Element) child2 ).getTagName() )
-                        || !WordToHtmlUtils.equals(
-                                ( (Element) child1 ).getAttribute( "class" ),
-                                ( (Element) child2 ).getAttribute( "class" ) ) )
-                    continue;
-
-                // merge
-                while ( child2.getChildNodes().getLength() > 0 )
-                    child1.appendChild( child2.getFirstChild() );
-                child2.getParentNode().removeChild( child2 );
-                i--;
-            }
-        }
-
+        WordToHtmlUtils.compactSpans( pElement );
         return;
     }
 

src/scratchpad/src/org/apache/poi/hwpf/converter/WordToHtmlUtils.java

@@ -21,6 +21,7 @@ import org.apache.poi.hwpf.usermodel.CharacterRun;
 import org.apache.poi.hwpf.usermodel.Paragraph;
 import org.apache.poi.hwpf.usermodel.TableCell;
 import org.apache.poi.hwpf.usermodel.TableRow;
+import org.w3c.dom.Element;
 
 public class WordToHtmlUtils extends AbstractWordUtils
 {
@@ -223,4 +224,9 @@ public class WordToHtmlUtils extends AbstractWordUtils
         }
     }
 
+    static void compactSpans( Element pElement )
+    {
+        compactChildNodes( pElement, "span" );
+    }
+
 }