wip: new

src/bin/grexd-hugefileviewer

@@ -24,7 +24,8 @@ E = KeyPressEvent
 class HugeFileViewerWidget:
     def __init__(self, filename: os.PathLike[str]):
         self.filename = filename
-        self.control = grexd.HugeFileViewerUIControl(filename=filename)
+        with open(self.filename, "rb") as fd:
+            self.control = grexd.HugeFileViewerUIControl(fd=fd)
         self.window = Window(self.control)
 
     def __pt_container__(self) -> Container:

src/bin/grexd-regexbuild

@@ -6,8 +6,9 @@ A console regular expression editor
 import argparse
 import asyncio
 import logging
+import os
 import re
-from typing import Any, Optional
+from typing import Optional
 
 import grexd
 from prompt_toolkit import Application
@@ -30,9 +31,10 @@ MAX_LINES = 1000
 
 
 class FileviewControl(grexd.HugeFileViewerUIControl):
-    def __init__(self, *args: Any, **kwargs: Any) -> None:
+    def __init__(self, filename: os.PathLike[str]) -> None:
         self.regex: Optional[re.Pattern[bytes]] = None
-        grexd.HugeFileViewerUIControl.__init__(self, *args, **kwargs)
+        with open(filename, "rb") as fd:
+            grexd.HugeFileViewerUIControl.__init__(self, fd=fd)
 
     def update_lines(self) -> None:
         if not self.regex:
@@ -69,7 +71,7 @@ class FileviewControl(grexd.HugeFileViewerUIControl):
 
 
 class Fileview:
-    def __init__(self, filename: str):
+    def __init__(self, filename: os.PathLike[str]):
         self.filename = filename
         self.control = FileviewControl(filename)
         self.window = Window(self.control)
@@ -133,12 +135,14 @@ class RegexWindow:
         return self.window
 
 
-async def grexd_run(filename: str, regex_str: Optional[str] = None) -> None:
+async def grexd_run(
+    filename: os.PathLike[str], regex_str: Optional[str] = None
+) -> None:
     fileview = Fileview(filename)
     regexwin = RegexWindow(fileview, regex_str or "")
     root_container = HSplit(
         [
-            Frame(title=filename, body=fileview),
+            Frame(title=str(filename), body=fileview),
             Frame(title="Regular expression", body=regexwin, height=7),
         ]
     )

src/grexd/hugefilevieweruicontrol.py

@@ -1,7 +1,7 @@
 """Control for the huge file widget"""
 
+import io
 import mmap
-import os
 import re
 from typing import TYPE_CHECKING, List, Optional
 
@@ -23,9 +23,8 @@
 class HugeFileViewerUIControl(UIControl):
     """UIControl optimized for huge file visualization"""
 
-    def __init__(self, filename: os.PathLike[str]):
-        self._filename = filename
-        self._fd = open(self._filename, "r")
+    def __init__(self, fd: io.BufferedReader):
+        self._fd = fd
         self._mm = mmap.mmap(self._fd.fileno(), 0, access=mmap.ACCESS_READ)
         self._size = self._mm.size()
         self._offset = 0