PPF-1051: should improve some performances

Author: chinapandaman

PyPDFForm/adapter.py

@@ -10,6 +10,7 @@
 stream before further processing.
 """
 
+from functools import lru_cache
 from os.path import isfile
 from typing import Any, BinaryIO, Union
 
@@ -31,6 +32,7 @@ def readable(obj: Any) -> bool:
     return callable(getattr(obj, "read", None))
 
 
+@lru_cache
 def fp_or_f_obj_or_stream_to_stream(
     fp_or_f_obj_or_stream: Union[bytes, str, BinaryIO],
 ) -> bytes:

PyPDFForm/font.py

@@ -23,6 +23,7 @@
 from .utils import stream_to_io
 
 
+@lru_cache
 def register_font(font_name: str, ttf_stream: bytes) -> bool:
     """
     Registers a TrueType font with the ReportLab library.
@@ -217,6 +218,7 @@ def get_new_font_name(fonts: dict) -> str:
     return f"{FONT_NAME_PREFIX}{n}"
 
 
+@lru_cache
 def get_all_available_fonts(pdf: bytes) -> dict:
     """
     Retrieves all available fonts from a PDF document's AcroForm.

PyPDFForm/utils.py

@@ -85,6 +85,7 @@ def enable_adobe_mode(pdf: bytes) -> bytes:
         return f.read()
 
 
+@lru_cache
 def remove_all_widgets(pdf: bytes) -> bytes:
     """
     Removes all widgets (form fields) from a PDF, effectively flattening the form.