Make the directory name be the default relpath

IPython/nbconvert/exporters/exporter.py

@@ -142,9 +142,10 b' class Exporter(LoggingConfigurable):'
             resources = ResourcesDict()
         if not 'metadata' in resources or resources['metadata'] == '':
             resources['metadata'] = ResourcesDict()
-        basename = os.path.basename(filename)
+        path, basename = os.path.split(filename)
         notebook_name = basename[:basename.rfind('.')]
         resources['metadata']['name'] = notebook_name
+        resources['metadata']['path'] = path
 
         modified_date = datetime.datetime.fromtimestamp(os.path.getmtime(filename))
         resources['metadata']['modified_date'] = modified_date.strftime(text.date_format)

IPython/nbconvert/writers/files.py

@@ -29,7 +29,9 b' class FilesWriter(WriterBase):'
         "", config=True, 
         help="""When copying files that the notebook depends on, copy them in
         relation to this path, such that the destination filename will be
-        os.path.relpath(filename, relpath).""")
+        os.path.relpath(filename, relpath). If FilesWriter is operating on a
+        notebook that already exists elsewhere on disk, then the default will be
+        the directory containing that notebook.""")
 
 
     # Make sure that the output directory exists.
@@ -65,6 +67,12 b' class FilesWriter(WriterBase):'
             # Pull the extension and subdir from the resources dict.
             output_extension = resources.get('output_extension', None)
 
+            # Get the relative path for copying files
+            if self.relpath == '':
+                relpath = resources.get('metadata', {}).get('path', '')
+            else:
+                relpath = self.relpath
+
             # Write all of the extracted resources to the destination directory.
             # NOTE: WE WRITE EVERYTHING AS-IF IT'S BINARY.  THE EXTRACT FIG
             # PREPROCESSOR SHOULD HANDLE UNIX/WINDOWS LINE ENDINGS...
@@ -88,8 +96,8 b' class FilesWriter(WriterBase):'
                     for matching_filename in glob.glob(filename):
 
                         # compute the relative path for the filename
-                        if self.relpath:
-                            dest_filename = os.path.relpath(matching_filename, self.relpath)
+                        if relpath != '':
+                            dest_filename = os.path.relpath(matching_filename, relpath)
                         else:
                             dest_filename = matching_filename
 

IPython/nbconvert/writers/tests/test_files.py

@@ -236,3 +236,72 b' class Testfiles(TestsBase):'
             with open(dest, 'r') as f:
                 output = f.read()
                 self.assertEqual(output, 'd')
+
+    def test_relpath_default(self):
+        """Is the FilesWriter default relative path correct?"""
+
+        # Work in a temporary directory.
+        with self.create_temp_cwd():
+
+            # Create test file
+            os.mkdir('sub')
+            with open(os.path.join('sub', 'c'), 'w') as f:
+                f.write('d')
+
+            # Create the resoruces dictionary
+            res = dict(metadata=dict(path="sub"))
+
+            # Create files writer, test output
+            writer = FilesWriter()
+            writer.files = [os.path.join('sub', 'c')]
+            writer.build_directory = u'build'
+            writer.write(u'y', res, notebook_name="z")
+
+            # Check the output of the file
+            assert os.path.isdir(writer.build_directory)
+            dest = os.path.join(writer.build_directory, 'z')
+            with open(dest, 'r') as f:
+                output = f.read()
+                self.assertEqual(output, u'y')
+
+            # Check to make sure the linked file was copied
+            dest = os.path.join(writer.build_directory, 'c')
+            assert os.path.isfile(dest)
+            with open(dest, 'r') as f:
+                output = f.read()
+                self.assertEqual(output, 'd')
+
+    def test_relpath_default(self):
+        """Does the FilesWriter relpath option take precedence over the path?"""
+
+        # Work in a temporary directory.
+        with self.create_temp_cwd():
+
+            # Create test file
+            os.mkdir('sub')
+            with open(os.path.join('sub', 'c'), 'w') as f:
+                f.write('d')
+
+            # Create the resoruces dictionary
+            res = dict(metadata=dict(path="other_sub"))
+
+            # Create files writer, test output
+            writer = FilesWriter()
+            writer.files = [os.path.join('sub', 'c')]
+            writer.build_directory = u'build'
+            writer.relpath = 'sub'
+            writer.write(u'y', res, notebook_name="z")
+
+            # Check the output of the file
+            assert os.path.isdir(writer.build_directory)
+            dest = os.path.join(writer.build_directory, 'z')
+            with open(dest, 'r') as f:
+                output = f.read()
+                self.assertEqual(output, u'y')
+
+            # Check to make sure the linked file was copied
+            dest = os.path.join(writer.build_directory, 'c')
+            assert os.path.isfile(dest)
+            with open(dest, 'r') as f:
+                output = f.read()
+                self.assertEqual(output, 'd')