epy: fix no imghdr

srcpkgs/epy/patches/no-imghdr.patch

@@ -0,0 +1,54 @@
+--- a/pyproject.toml
++++ b/pyproject.toml
+@@ -17,6 +17,7 @@ epy = "epy_reader.__main__:main"
+ [tool.poetry.dependencies]
+ python = "^3.8"
+ windows-curses = { version = "*", markers = "platform_system == 'Windows'" }
++magic = { version = "*" }
+ 
+ [tool.poetry.dev-dependencies]
+ pynvim = "^0.4.3"
+--- a/src/epy_reader/tools/KindleUnpack/mobi_cover.py
++++ b/src/epy_reader/tools/KindleUnpack/mobi_cover.py
+@@ -8,7 +8,7 @@ from .compatibility_utils import unicode
+ 
+ from .unipath import pathof
+ import os
+-import imghdr
++import magic
+ 
+ import struct
+ # note:  struct pack, unpack, unpack_from all require bytestring format
+@@ -34,24 +34,14 @@ MAX_HEIGHT = 4096
+ 
+ 
+ def get_image_type(imgname, imgdata=None):
+-    imgtype = unicode_str(imghdr.what(pathof(imgname), imgdata))
+-
+-    # imghdr only checks for JFIF or Exif JPEG files. Apparently, there are some
+-    # with only the magic JPEG bytes out there...
+-    # ImageMagick handles those, so, do it too.
+-    if imgtype is None:
+-        if imgdata is None:
+-            with open(pathof(imgname), 'rb') as f:
+-                imgdata = f.read()
+-        if imgdata[0:2] == b'\xFF\xD8':
+-            # Get last non-null bytes
+-            last = len(imgdata)
+-            while (imgdata[last-1:last] == b'\x00'):
+-                last-=1
+-            # Be extra safe, check the trailing bytes, too.
+-            if imgdata[last-2:last] == b'\xFF\xD9':
+-                imgtype = "jpeg"
+-    return imgtype
++    mime = None
++    if imgname:
++        mime = magic.from_file(pathof(imgname), mime=True)
++    if not mime and imgdata:
++        mime = magic.from_buffer(imgdata, mime=True)
++    if mime and mime.startswith('image/'):
++        return mime.removeprefix('image/')
++    return None
+ 
+ 
+ def get_image_size(imgname, imgdata=None):

srcpkgs/epy/template

@@ -1,7 +1,7 @@
 # Template file for 'epy'
 pkgname=epy
 version=2023.6.11
-revision=3
+revision=4
 build_style=python3-pep517
 hostmakedepends="python3-poetry-core"
 depends="python3"