add header in tex formatter

PyTeX/format/dict_formatter.py

@@ -51,7 +51,7 @@ class DictFormatter(PyTeXFormatter):
 
     def format(self, build_dir: Path, overwrite: bool = False) -> Optional[List[Tuple[str, Dict]]]:
         build_dir.mkdir(parents=True, exist_ok=True)
-        self.format_header()
+        self.make_header()
         for language in self._languages:
             lines = [self.header, '']
             lines += r'\ProvidesDictionary{{{dict_name}}}{{{language}}}'.format(

PyTeX/format/pytex_formatter.py

@@ -116,7 +116,7 @@ class PyTeXFormatter(FormatterIF):
 
         return self._header
 
-    def format_header(self, **kwargs) -> str:
+    def make_header(self, **kwargs) -> str:
         return '\n'.join(
             [
                 '%'*80,

PyTeX/format/tex_formatter.py

@@ -93,8 +93,16 @@ class TexFormatter(PyTeXFormatter):
     def future_config(self) -> Optional[List[Tuple[str, Dict]]]:
         raise NotImplementedError
 
-    def format(self, build_dir: Path, overwrite: bool = False) -> Optional[List[Tuple[str, Dict]]]:
+    def format_pre_header(self) -> None:
-        self.open_output_stream()
+        pass
+
+    def format_header(self):
+        self._output_file.write(self.make_header())
+
+    def format_post_header(self) -> None:
+        pass
+
+    def format_document(self) -> None:
         while not self.line_stream.exhausted:
             recent_replacement = True
             while recent_replacement:
@@ -105,5 +113,12 @@ class TexFormatter(PyTeXFormatter):
                         recent_replacement = True
                         break
             self._shipout_line()
+
+    def format(self, build_dir: Path, overwrite: bool = False) -> Optional[List[Tuple[str, Dict]]]:
+        self.open_output_stream()
+        self.format_pre_header()
+        self.format_header()
+        self.format_post_header()
+        self.format_document()
         self._output_file.close()
         return self.future_config