Added check of "writeMode" to write() method.

Added check of "writeMode" parameter to DcmFileFormat::write() method,
so that only a dataset (without meta header) is written if its value
is EWM_dataset, i.e. if requested by the caller. This behavior is now
consistent with the DcmFileFormat::saveFile() method.

Thanks to Mathieu Malaterre <mathieu.malaterre@gmail.com> for the
original report on this issue.

Author: jriesmeier

dcmdata/libsrc/dcdatset.cc

@@ -471,11 +471,10 @@ OFCondition DcmDataset::readUntilTag(DcmInputStream &inStream,
 // ********************************
 
 
-OFCondition DcmDataset::write(
-      DcmOutputStream &outStream,
-      const E_TransferSyntax oxfer,
-      const E_EncodingType enctype /* = EET_UndefinedLength */,
-      DcmWriteCache *wcache)
+OFCondition DcmDataset::write(DcmOutputStream &outStream,
+                              const E_TransferSyntax oxfer,
+                              const E_EncodingType enctype /* = EET_UndefinedLength */,
+                              DcmWriteCache *wcache)
 {
     return write(outStream, oxfer, enctype, wcache, EGL_recalcGL);
 }

dcmdata/libsrc/dcfilefo.cc

@@ -843,6 +843,12 @@ OFCondition DcmFileFormat::write(DcmOutputStream &outStream,
      *                         in the file meta information header.
      */
 {
+    /* write as dataset (without meta header) */
+    if (writeMode == EWM_dataset)
+    {
+        return getDataset()->write(outStream, oxfer, enctype, wcache, glenc,
+            padenc, padlen, subPadlen, instanceLength);
+    }
     /* if the transfer state of this is not initialized, this is an illegal call */
     if (getTransferState() == ERW_notInitialized)
         errorFlag = EC_IllegalCall;
@@ -1001,6 +1007,7 @@ OFCondition DcmFileFormat::saveFile(const OFFilename &fileName,
                                     const Uint32 subPadLength,
                                     const E_FileWriteMode writeMode)
 {
+    /* save as dataset (without meta header) */
     if (writeMode == EWM_dataset)
     {
         return getDataset()->saveFile(fileName, writeXfer, encodingType, groupLength,