Migrate code style to Black

docs/conf.py

@@ -70,5 +70,5 @@ autodoc_default_options = {
 # should be linked to in this documentation.
 intersphinx_mapping = {
     'python': ('https://docs.python.org/3', None),
-    'PIL': ('https://pillow.readthedocs.io/en/stable/', None)
+    'PIL': ('https://pillow.readthedocs.io/en/stable/', None),
 }

pyproject.toml

@@ -73,3 +73,8 @@ test-command = "cd /d {project} && python -m unittest --verbose" # windows why i
 skip = ["cp37-musllinux*", "*musllinux_aarch64*"] # skip targets without available Pillow wheels
 manylinux-x86_64-image = "manylinux2014"
 manylinux-aarch64-image = "manylinux2014"
+
+[tool.black]
+line-length = 120 # 80-column is stupid
+target-version = ['py37', 'py38', 'py39', 'py310']
+skip-string-normalization = true

quicktex/__main__.py

@@ -1,6 +1,7 @@
 import click
-from quicktex.cli.encode import encode
+
 from quicktex.cli.decode import decode
+from quicktex.cli.encode import encode
 
 
 @click.group()

quicktex/cli/common.py

@@ -1,7 +1,8 @@
-from PIL import Image
-from typing import List
 import pathlib
+from typing import List
+
 import click
+from PIL import Image
 
 
 def get_decoded_extensions(feature: str = 'open') -> List[str]:

quicktex/cli/decode.py

@@ -1,28 +1,49 @@
-import click
 import os.path
-import quicktex.dds as dds
-import quicktex.cli.common as common
+
+import click
 from PIL import Image
 
+import quicktex.cli.common as common
+import quicktex.dds as dds
+
 
 @click.command()
-@click.option('-f/-F', '--flip/--no-flip', default=True, show_default=True, help="Vertically flip image after converting.")
+@click.option(
+    '-f/-F', '--flip/--no-flip', default=True, show_default=True, help="Vertically flip image after converting."
+)
 @click.option('-r', '--remove', is_flag=True, help="Remove input images after converting.")
-@click.option('-s', '--suffix', type=str, default='', help="Suffix to append to output file(s). Ignored if output is a single file.")
-@click.option('-x', '--extension',
-              callback=common.validate_decoded_extension,
-              type=str, default='.png', show_default=True,
-              help="Extension to use for output. Ignored if output is a single file. Output filetype is deduced from this")
-@click.option('-o', '--output',
-              type=click.Path(writable=True), default=None,
-              help="Output file or directory. If outputting to a file, input filenames must be only a single item. By default, files are decoded in place.")
+@click.option(
+    '-s',
+    '--suffix',
+    type=str,
+    default='',
+    help="Suffix to append to output file(s). Ignored if output is a single file.",
+)
+@click.option(
+    '-x',
+    '--extension',
+    callback=common.validate_decoded_extension,
+    type=str,
+    default='.png',
+    show_default=True,
+    help="Extension to use for output. Ignored if output is a single file. Output filetype is deduced from this",
+)
+@click.option(
+    '-o',
+    '--output',
+    type=click.Path(writable=True),
+    default=None,
+    help="Output file or directory. If outputting to a file, input filenames must be only a single item. By default, files are decoded in place.",
+)
 @click.argument('filenames', nargs=-1, type=click.Path(exists=True, readable=True, dir_okay=False))
 def decode(flip, remove, suffix, extension, output, filenames):
     """Decode DDS files to images."""
 
     path_pairs = common.path_pairs(filenames, output, suffix, extension)
 
-    with click.progressbar(path_pairs, show_eta=False, show_pos=True, item_show_func=lambda x: str(x[0]) if x else '') as bar:
+    with click.progressbar(
+        path_pairs, show_eta=False, show_pos=True, item_show_func=lambda x: str(x[0]) if x else ''
+    ) as bar:
         for inpath, outpath in bar:
             if inpath.suffix != '.dds':
                 raise click.BadArgumentUsage(f"Input file '{inpath}' is not a DDS file.")

quicktex/cli/encode.py

@@ -1,13 +1,14 @@
-import click
 import os
-import pathlib
+
+import click
+from PIL import Image
+
+import quicktex.cli.common as common
+import quicktex.dds as dds
 import quicktex.s3tc.bc1
 import quicktex.s3tc.bc3
 import quicktex.s3tc.bc4
 import quicktex.s3tc.bc5
-import quicktex.dds as dds
-import quicktex.cli.common as common
-from PIL import Image
 
 
 @click.group()
@@ -16,17 +17,31 @@ def encode():
 
 
 @click.command()
-@click.option('-f/-F', '--flip/--no-flip', default=True, show_default=True, help="Vertically flip image before converting.")
+@click.option(
+    '-f/-F', '--flip/--no-flip', default=True, show_default=True, help="Vertically flip image before converting."
+)
 @click.option('-r', '--remove', is_flag=True, help="Remove input images after converting.")
-@click.option('-s', '--suffix', type=str, default='', help="Suffix to append to output file(s). Ignored if output is a single file.")
-@click.option('-o', '--output',
-              type=click.Path(writable=True), default=None,
-              help="Output file or directory. If outputting to a file, input filenames must be only a single item. By default, files are decoded in place.")
+@click.option(
+    '-s',
+    '--suffix',
+    type=str,
+    default='',
+    help="Suffix to append to output file(s). Ignored if output is a single file.",
+)
+@click.option(
+    '-o',
+    '--output',
+    type=click.Path(writable=True),
+    default=None,
+    help="Output file or directory. If outputting to a file, input filenames must be only a single item. By default, files are decoded in place.",
+)
 @click.argument('filenames', nargs=-1, type=click.Path(exists=True, readable=True, dir_okay=False))
 def encode_format(encoder, four_cc, flip, remove, suffix, output, filenames):
     path_pairs = common.path_pairs(filenames, output, suffix, '.dds')
 
-    with click.progressbar(path_pairs, show_eta=False, show_pos=True, item_show_func=lambda x: str(x[0]) if x else '') as bar:
+    with click.progressbar(
+        path_pairs, show_eta=False, show_pos=True, item_show_func=lambda x: str(x[0]) if x else ''
+    ) as bar:
         for inpath, outpath in bar:
             image = Image.open(inpath)
 
@@ -40,17 +55,44 @@ def encode_format(encoder, four_cc, flip, remove, suffix, output, filenames):
 
 
 @click.command('auto')
-@click.option('-l', '--level', type=click.IntRange(0, 18), default=18, help='Quality level to use. Higher values = higher quality, but slower.')
-@click.option('-b/-B', '--black/--no-black',
-              help='[BC1 only] Enable 3-color mode for blocks containing black or very dark pixels. --3color must also be enabled for this to work.'
-                   ' (Important: engine/shader MUST ignore decoded texture alpha if this flag is enabled!)')
-@click.option('-3/-4', '--3color/--4color', 'threecolor', default=True, help='[BC1 only] Enable 3-color mode for non-black pixels. Higher quality, but slightly slower.')
-@click.option('-f/-F', '--flip/--no-flip', default=True, show_default=True, help="Vertically flip image before converting.")
+@click.option(
+    '-l',
+    '--level',
+    type=click.IntRange(0, 18),
+    default=18,
+    help='Quality level to use. Higher values = higher quality, but slower.',
+)
+@click.option(
+    '-b/-B',
+    '--black/--no-black',
+    help='[BC1 only] Enable 3-color mode for blocks containing black or very dark pixels. --3color must also be enabled for this to work.'
+    ' (Important: engine/shader MUST ignore decoded texture alpha if this flag is enabled!)',
+)
+@click.option(
+    '-3/-4',
+    '--3color/--4color',
+    'threecolor',
+    default=True,
+    help='[BC1 only] Enable 3-color mode for non-black pixels. Higher quality, but slightly slower.',
+)
+@click.option(
+    '-f/-F', '--flip/--no-flip', default=True, show_default=True, help="Vertically flip image before converting."
+)
 @click.option('-r', '--remove', is_flag=True, help="Remove input images after converting.")
-@click.option('-s', '--suffix', type=str, default='', help="Suffix to append to output file(s). Ignored if output is a single file.")
-@click.option('-o', '--output',
-              type=click.Path(writable=True), default=None,
-              help="Output file or directory. If outputting to a file, input filenames must be only a single item. By default, files are decoded in place.")
+@click.option(
+    '-s',
+    '--suffix',
+    type=str,
+    default='',
+    help="Suffix to append to output file(s). Ignored if output is a single file.",
+)
+@click.option(
+    '-o',
+    '--output',
+    type=click.Path(writable=True),
+    default=None,
+    help="Output file or directory. If outputting to a file, input filenames must be only a single item. By default, files are decoded in place.",
+)
 @click.argument('filenames', nargs=-1, type=click.Path(exists=True, readable=True, dir_okay=False))
 def encode_auto(level, black, threecolor, flip, remove, suffix, output, filenames):
     """Encode images to BC1 or BC3, with the format chosen based on each image's alpha channel."""
@@ -67,7 +109,9 @@ def encode_auto(level, black, threecolor, flip, remove, suffix, output, filename
     bc3_encoder = quicktex.s3tc.bc3.BC3Encoder(level)
     path_pairs = common.path_pairs(filenames, output, suffix, '.dds')
 
-    with click.progressbar(path_pairs, show_eta=False, show_pos=True, item_show_func=lambda x: str(x[0]) if x else '') as bar:
+    with click.progressbar(
+        path_pairs, show_eta=False, show_pos=True, item_show_func=lambda x: str(x[0]) if x else ''
+    ) as bar:
         for inpath, outpath in bar:
             image = Image.open(inpath)
 
@@ -90,11 +134,26 @@ def encode_auto(level, black, threecolor, flip, remove, suffix, output, filename
 
 
 @click.command('bc1')
-@click.option('-l', '--level', type=click.IntRange(0, 18), default=18, help='Quality level to use. Higher values = higher quality, but slower.')
-@click.option('-b/-B', '--black/--no-black',
-              help='Enable 3-color mode for blocks containing black or very dark pixels. --3color must also be enabled for this to work.'
-                   ' (Important: engine/shader MUST ignore decoded texture alpha if this flag is enabled!)')
-@click.option('-3/-4', '--3color/--4color', 'threecolor', default=True, help='Enable 3-color mode for non-black pixels. Higher quality, but slightly slower.')
+@click.option(
+    '-l',
+    '--level',
+    type=click.IntRange(0, 18),
+    default=18,
+    help='Quality level to use. Higher values = higher quality, but slower.',
+)
+@click.option(
+    '-b/-B',
+    '--black/--no-black',
+    help='Enable 3-color mode for blocks containing black or very dark pixels. --3color must also be enabled for this to work.'
+    ' (Important: engine/shader MUST ignore decoded texture alpha if this flag is enabled!)',
+)
+@click.option(
+    '-3/-4',
+    '--3color/--4color',
+    'threecolor',
+    default=True,
+    help='Enable 3-color mode for non-black pixels. Higher quality, but slightly slower.',
+)
 def encode_bc1(level, black, threecolor, **kwargs):
     """Encode images to BC1 (RGB, no alpha)."""
     color_mode = quicktex.s3tc.bc1.BC1Encoder.ColorMode
@@ -109,7 +168,13 @@ def encode_bc1(level, black, threecolor, **kwargs):
 
 
 @click.command('bc3')
-@click.option('-l', '--level', type=click.IntRange(0, 18), default=18, help='Quality level to use. Higher values = higher quality, but slower.')
+@click.option(
+    '-l',
+    '--level',
+    type=click.IntRange(0, 18),
+    default=18,
+    help='Quality level to use. Higher values = higher quality, but slower.',
+)
 def encode_bc3(level, **kwargs):
     """Encode images to BC4 (RGBA, 8-bit interpolated alpha)."""
     encode_format.callback(quicktex.s3tc.bc3.BC3Encoder(level), 'DXT5', **kwargs)

quicktex/dds.py

@@ -4,12 +4,14 @@ import enum
 import os
 import struct
 import typing
+
+from PIL import Image
+
 import quicktex.image_utils
 import quicktex.s3tc.bc1 as bc1
 import quicktex.s3tc.bc3 as bc3
 import quicktex.s3tc.bc4 as bc4
 import quicktex.s3tc.bc5 as bc5
-from PIL import Image
 
 
 class DDSFormat:
@@ -165,8 +167,28 @@ class DDSFile:
             file.write(DDSFile.magic)
 
             # WRITE HEADER
-            file.write(struct.pack('<7I44x', DDSFile.header_bytes, int(self.flags), self.size[1], self.size[0], self.pitch, self.depth, self.mipmap_count))
-            file.write(struct.pack('<2I4s5I', 32, int(self.pf_flags), bytes(self.four_cc, 'ascii'), self.pixel_size, *self.pixel_bitmasks))
+            file.write(
+                struct.pack(
+                    '<7I44x',
+                    DDSFile.header_bytes,
+                    int(self.flags),
+                    self.size[1],
+                    self.size[0],
+                    self.pitch,
+                    self.depth,
+                    self.mipmap_count,
+                )
+            )
+            file.write(
+                struct.pack(
+                    '<2I4s5I',
+                    32,
+                    int(self.pf_flags),
+                    bytes(self.four_cc, 'ascii'),
+                    self.pixel_size,
+                    *self.pixel_bitmasks,
+                )
+            )
             file.write(struct.pack('<4I4x', *self.caps))
 
             assert file.tell() == 4 + DDSFile.header_bytes, 'error writing file: incorrect header size'

quicktex/image_utils.py

@@ -1,8 +1,9 @@
 """Various utilities for working with Pillow images"""
 
-from PIL import Image
-from typing import List, Tuple, Optional
 import math
+from typing import List, Tuple, Optional
+
+from PIL import Image
 
 
 def mip_sizes(dimensions: Tuple[int, int], mip_count: Optional[int] = None) -> List[Tuple[int, int]]:

setup.py

@@ -22,6 +22,7 @@ class CMakeExtension(Extension):
 class CMakeBuild(build_ext):
     def build_extension(self, ext):
         from setuptools_scm import get_version
+
         version = get_version(root='.', relative_to=__file__)
 
         extdir = os.path.abspath(os.path.dirname(self.get_ext_fullpath(ext.name)))
@@ -45,7 +46,8 @@ class CMakeBuild(build_ext):
             "-DQUICKTEX_VERSION_INFO={}".format(version),
             "-DCMAKE_BUILD_TYPE={}".format(cfg),  # not used on MSVC, but no harm
             # clear cached make program binary, see https://github.com/pypa/setuptools/issues/2912
-            "-U", "CMAKE_MAKE_PROGRAM",
+            "-U",
+            "CMAKE_MAKE_PROGRAM",
         ]
         build_args = []
 
@@ -81,9 +83,7 @@ class CMakeBuild(build_ext):
 
             # Multi-config generators have a different way to specify configs
             if not single_config:
-                cmake_args += [
-                    "-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}".format(cfg.upper(), extdir)
-                ]
+                cmake_args += ["-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}".format(cfg.upper(), extdir)]
                 build_args += ["--config", cfg]
 
         if sys.platform.startswith("darwin"):
@@ -104,12 +104,8 @@ class CMakeBuild(build_ext):
         if not os.path.exists(self.build_temp):
             os.makedirs(self.build_temp)
 
-        subprocess.check_call(
-            ["cmake", ext.sourcedir] + cmake_args, cwd=self.build_temp
-        )
-        subprocess.check_call(
-            ["cmake", "--build", ".", "--target", ext.name] + build_args, cwd=self.build_temp
-        )
+        subprocess.check_call(["cmake", ext.sourcedir] + cmake_args, cwd=self.build_temp)
+        subprocess.check_call(["cmake", "--build", ".", "--target", ext.name] + build_args, cwd=self.build_temp)
 
 
 # The information here can also be placed in setup.cfg - better separation of

tests/test_bc1.py

@@ -58,12 +58,8 @@ class TestBC1Block(unittest.TestCase):
 
 
 @parameterized_class(
-    ("name", "w", "h", "wb", "hb"), [
-        ("8x8", 8, 8, 2, 2),
-        ("9x9", 9, 9, 3, 3),
-        ("7x7", 7, 7, 2, 2),
-        ("7x9", 7, 9, 2, 3)
-    ])
+    ("name", "w", "h", "wb", "hb"), [("8x8", 8, 8, 2, 2), ("9x9", 9, 9, 3, 3), ("7x7", 7, 7, 2, 2), ("7x9", 7, 9, 2, 3)]
+)
 class TestBC1Texture(unittest.TestCase):
     def setUp(self):
         self.tex = BC1Texture(self.w, self.h)
@@ -98,7 +94,7 @@ class TestBC1Texture(unittest.TestCase):
             for y in range(self.hb):
                 index = (x + (y * self.wb)) * BC1Block.nbytes
                 tb = self.tex[x, y]
-                fb = BC1Block.frombytes(b[index:index + BC1Block.nbytes])
+                fb = BC1Block.frombytes(b[index : index + BC1Block.nbytes])
                 self.assertEqual(tb, blocks[y][x], 'incorrect block read from texture')
                 self.assertEqual(fb, blocks[y][x], 'incorrect block read from texture bytes')
 
@@ -124,11 +120,13 @@ class TestBC1Texture(unittest.TestCase):
 
 
 @parameterized_class(
-    ("name", "color_mode"), [
+    ("name", "color_mode"),
+    [
         ("4Color", BC1Encoder.ColorMode.FourColor),
         ("3Color", BC1Encoder.ColorMode.ThreeColor),
         ("3Color_Black", BC1Encoder.ColorMode.ThreeColorBlack),
-    ])
+    ],
+)
 class TestBC1Encoder(unittest.TestCase):
     """Test BC1Encoder"""
 
@@ -189,11 +187,13 @@ class TestBC1Decoder(unittest.TestCase):
     def setUpClass(cls):
         cls.bc1_decoder = BC1Decoder()
 
-    @parameterized.expand([
-        ("4color", BC1Blocks.greyscale.block, BC1Blocks.greyscale.image),
-        ("3color", BC1Blocks.three_color.block, BC1Blocks.three_color.image),
-        ("3color_black", BC1Blocks.three_color_black.block, BC1Blocks.three_color_black.image)
-    ])
+    @parameterized.expand(
+        [
+            ("4color", BC1Blocks.greyscale.block, BC1Blocks.greyscale.image),
+            ("3color", BC1Blocks.three_color.block, BC1Blocks.three_color.image),
+            ("3color_black", BC1Blocks.three_color_black.block, BC1Blocks.three_color_black.image),
+        ]
+    )
     def test_block(self, _, block, image):
         """Test decoder output for a single block"""
         in_tex = BC1Texture(4, 4)

tests/test_bc4.py

@@ -7,6 +7,7 @@ from PIL import Image, ImageChops
 
 class TestBC4Block(unittest.TestCase):
     """Tests for the BC1Block class"""
+
     block_bytes = b'\xF0\x10\x88\x86\x68\xAC\xCF\xFA'
     selectors = [[0, 1, 2, 3]] * 2 + [[4, 5, 6, 7]] * 2
     endpoints = (240, 16)
@@ -68,12 +69,8 @@ class TestBC4Block(unittest.TestCase):
 
 
 @parameterized_class(
-    ("name", "w", "h", "wb", "hb"), [
-        ("8x8", 8, 8, 2, 2),
-        ("9x9", 9, 9, 3, 3),
-        ("7x7", 7, 7, 2, 2),
-        ("7x9", 7, 9, 2, 3)
-    ])
+    ("name", "w", "h", "wb", "hb"), [("8x8", 8, 8, 2, 2), ("9x9", 9, 9, 3, 3), ("7x7", 7, 7, 2, 2), ("7x9", 7, 9, 2, 3)]
+)
 class TestBC4Texture(unittest.TestCase):
     def setUp(self):
         self.tex = BC4Texture(self.w, self.h)
@@ -108,7 +105,7 @@ class TestBC4Texture(unittest.TestCase):
             for y in range(self.hb):
                 index = (x + (y * self.wb)) * BC4Block.nbytes
                 tb = self.tex[x, y]
-                fb = BC4Block.frombytes(b[index:index + BC4Block.nbytes])
+                fb = BC4Block.frombytes(b[index : index + BC4Block.nbytes])
                 self.assertEqual(tb, blocks[y][x], 'incorrect block read from texture')
                 self.assertEqual(fb, blocks[y][x], 'incorrect block read from texture bytes')
 
@@ -160,10 +157,12 @@ class TestBC4Decoder(unittest.TestCase):
     def setUpClass(cls):
         cls.bc4_decoder = BC4Decoder(0)
 
-    @parameterized.expand([
-        ("8value", BC4Blocks.eight_value.block, BC4Blocks.eight_value.image),
-        ("6value", BC4Blocks.six_value.block, BC4Blocks.six_value.image),
-    ])
+    @parameterized.expand(
+        [
+            ("8value", BC4Blocks.eight_value.block, BC4Blocks.eight_value.image),
+            ("6value", BC4Blocks.six_value.block, BC4Blocks.six_value.image),
+        ]
+    )
     def test_block(self, _, block, image):
         """Test decoder output for a single block"""
         in_tex = BC4Texture(4, 4)