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67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
#!/usr/bin/env python3
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"""Checks any number of dds files for common issues"""
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import sys
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import os
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import os.path
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import enum
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import argparse
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import dds
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class Check(enum.Enum):
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"""Kinds of check to perform"""
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TRANPARENCY = 1
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FORMAT = 2
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parser = argparse.ArgumentParser(description= __doc__)
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parser.add_argument('files', type=str, nargs='*', help = "input dds files")
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parser.add_argument('--transparency', '-t',
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action='append_const', dest='checks', const=Check.TRANPARENCY,
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help = "Check textures for unnecessary transparency map")
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parser.add_argument('--format', '-f',
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action='append_const', dest='checks', const=Check.FORMAT,
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help = "Check texture formats")
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parser.add_argument('--all', '-a',
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action='store_const', dest='checks', const=[Check.TRANPARENCY, Check.FORMAT],
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help = "Perform all checks")
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parser.add_argument('--formats', nargs='+', default = ['DXT1', 'DXT5'],
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help="Valid texture formats to check against (default: %(default)s)")
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parser.add_argument('--convertcmd', type=str, metavar='CMD', default=dds.convertcmd,
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help="name of imagemagick's convert tool (default: %(default)s)")
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args = parser.parse_args()
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dds.convertcmd = args.convertcmd
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def printerror(path, shortpath, message):
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"""either prints a message or just the path depending on if stdout is a tty"""
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if sys.stdout.isatty():
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print(f'[{shortpath}]: {message}')
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else:
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sys.stdout.write(path+'\n')
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def checkfile(shortpath, checks, formats):
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"""check a single dds file for common issues"""
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path = os.path.abspath(shortpath)
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with open(path, 'rb') as file:
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ddsfile = dds.DDSFile()
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ddsfile.read_header(file)
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four_cc = ddsfile.four_cc
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if four_cc == '':
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four_cc = "uncompressed"
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alpha = dds.alpha(path)
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if Check.TRANPARENCY in checks and four_cc == 'DXT5' and alpha > 254:
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printerror(path, shortpath, 'Image is DXT5 but has no alpha channel')
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if Check.FORMAT in checks and four_cc not in formats:
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printerror(path, shortpath, f'Incompatible format: {four_cc}')
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for shortpath in args.files:
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checkfile(shortpath, args.checks, args.formats)
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