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47 lines
1.1 KiB
Python
47 lines
1.1 KiB
Python
#!/usr/bin/env python3
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MAGIC = (0x72, 0xb5, 0x4a, 0x86)
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from collections import namedtuple
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PSF2 = namedtuple("PSF2", ["version", "offset", "flags", "count", "charsize", "height", "width"])
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def read_header(data):
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from struct import unpack_from, calcsize
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fmt = "BBBBIIIIIII"
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values = unpack_from(fmt, data)
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if values[:len(MAGIC)] != MAGIC:
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raise Exception("Bad magic number in header")
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return PSF2(*values[len(MAGIC):])
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def print_glyph(header, data):
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bw = (header.width + 7) // 8
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fmt = "{:08b}" * bw
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for y in range(header.height):
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b = data[y*bw:(y+1)*bw]
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s = fmt.format(*b).replace("0", " ").replace("1", "*")
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print(s)
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print("")
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def display_font(filename):
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data = open(filename, 'rb').read()
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header = read_header(data)
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print(header)
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c = header.charsize
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for i in range(0, header.count):
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n = i * c + header.offset
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print("Glyph {}:".format(i))
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print_glyph(header, data[n:n+c])
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if __name__ == "__main__":
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import sys
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for filename in sys.argv[1:]:
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display_font(filename)
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