Added methods getting data from bytes array and returning resuls as t…

…he bytes array

flying-saucer-pdf-itext5/pom.xml

@@ -32,6 +32,11 @@
   </distributionManagement>
 
   <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.12</version>
+    </dependency>
     <dependency>
       <groupId>com.itextpdf</groupId>
       <artifactId>itextpdf</artifactId>

flying-saucer-pdf-itext5/src/main/java/org/xhtmlrenderer/pdf/ITextRenderer.java

@@ -22,14 +22,7 @@
 import java.awt.Dimension;
 import java.awt.Rectangle;
 import java.awt.Shape;
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.StringReader;
-import java.io.StringWriter;
-import java.io.UnsupportedEncodingException;
-import java.io.Writer;
+import java.io.*;
 import java.util.List;
 import java.util.regex.Pattern;
 
@@ -152,6 +145,12 @@ public void setDocument(File file) throws IOException {
         setDocument(loadDocument(file.toURI().toURL().toExternalForm()), (parent == null ? "" : parent.toURI().toURL().toExternalForm()));
     }
 
+    public void setDocument(byte[] bytes) throws IOException {
+        ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);
+        Document dom = XMLResource.load(inputStream).getDocument();
+        setDocument(dom, "");
+    }
+
     public void setDocumentFromString(String content) {
         setDocumentFromString(content, null);
     }

flying-saucer-pdf-itext5/src/main/java/org/xhtmlrenderer/simple/PDFRenderer.java

@@ -4,10 +4,7 @@
 import com.itextpdf.text.pdf.PdfWriter;
 import org.xhtmlrenderer.pdf.ITextRenderer;
 
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
+import java.io.*;
 import java.util.Map;
 import java.util.HashMap;
 
@@ -111,6 +108,80 @@ public static void renderToPDF(File file, String pdf, Character pdfVersion)
         doRenderToPDF(renderer, pdf);
     }
 
+    /**
+     * Renders the XML file as a PDF file and return its bytes.
+     *
+     * @param bytes XML file bytes to render
+     * @throws IOException       if the file or PDF location is
+     *                           invalid
+     * @throws DocumentException if an error occurred
+     *                           while building the Document.
+     */
+    public static byte[] renderToPDFBytes(byte[] bytes)
+            throws IOException, DocumentException {
+
+        byte[] b = renderToPDFBytes(bytes, null);
+        return b;
+    }
+
+    /**
+     * Renders the XML file as a PDF file return its bytes.
+     *
+     * @param bytes XML file bytes to render
+     * @param pdfVersion version of PDF to output; null uses default version
+     * @throws IOException       if the file or PDF location is
+     *                           invalid
+     * @throws DocumentException if an error occurred
+     *                           while building the Document.
+     */
+    public static byte[] renderToPDFBytes(byte[] bytes, Character pdfVersion)
+            throws IOException, DocumentException {
+
+        ITextRenderer renderer = new ITextRenderer();
+        renderer.setDocument(bytes);
+        if (pdfVersion != null) renderer.setPDFVersion(pdfVersion.charValue());
+        byte[] b = doRenderToPDF(renderer);
+        return b;
+    }
+
+
+    /**
+     * Renders the XML file as a PDF file at the target location.
+     *
+     * @param bytes XML file bytes to render
+     * @param pdf  path to the PDF file to create
+     * @throws IOException       if the file or PDF location is
+     *                           invalid
+     * @throws DocumentException if an error occurred
+     *                           while building the Document.
+     */
+    public static void renderToPDF(byte[] bytes, String pdf)
+            throws IOException, DocumentException {
+
+        renderToPDF(bytes, pdf, null);
+    }
+
+    /**
+     * Renders the XML file as a PDF file at the target location.
+     *
+     * @param bytes XML file bytes to render
+     * @param pdf  path to the PDF file to create
+     * @param pdfVersion version of PDF to output; null uses default version
+     * @throws IOException       if the file or PDF location is
+     *                           invalid
+     * @throws DocumentException if an error occurred
+     *                           while building the Document.
+     */
+    public static void renderToPDF(byte[] bytes, String pdf, Character pdfVersion)
+            throws IOException, DocumentException {
+
+        ITextRenderer renderer = new ITextRenderer();
+        renderer.setDocument(bytes);
+        if (pdfVersion != null) renderer.setPDFVersion(pdfVersion.charValue());
+        doRenderToPDF(renderer, pdf);
+    }
+
+
     /**
      * Internal use, runs the render process
      * @param renderer
@@ -139,6 +210,37 @@ private static void doRenderToPDF(ITextRenderer renderer, String pdf)
         }
     }
 
+    /**
+     * Internal use, runs the render process
+     * @param renderer
+     * @throws com.itextpdf.text.DocumentException
+     * @throws java.io.IOException
+     */
+    private static byte[] doRenderToPDF(ITextRenderer renderer)
+            throws IOException, DocumentException {
+        ByteArrayOutputStream os = null;
+        byte[] pdf;
+        try {
+            os = new ByteArrayOutputStream();
+            renderer.layout();
+            renderer.createPDF(os);
+
+            pdf = os.toByteArray();
+
+            os.close();
+            os = null;
+        } finally {
+            if (os != null) {
+                try {
+                    os.close();
+                } catch (IOException e) {
+                    // ignore
+                }
+            }
+        }
+        return pdf;
+    }
+
     /**
      * Renders a file or URL to a PDF. Command line use: first
      * argument is URL or file path, second