55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
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#!/bin/python
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import struct
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GOOD_MAGIC = b"ZMFNT\0"
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BAD_MAGIC = b"ABCDE\0"
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NUM_FONT_SIZES = 4
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class FontFile:
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def __init__(self, path):
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self.path = path
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def write_file_header(self, magic):
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with open(self.path, "wb") as f:
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f.write(magic)
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f.write(struct.pack("BB", 0, 0)) # pad
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def write_bm_header(self, height, width, cp_count, idx):
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with open(self.path, "ab") as f:
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f.write(struct.pack("HHIII", height, width, cp_count, idx, 0))
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def write_codepoints(self, value, height, count):
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with open(self.path, "ab") as f:
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for _ in range(height * count):
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f.write(struct.pack("Q", value))
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font = FontFile("01_bad_magic.zmfnt")
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font.write_file_header(BAD_MAGIC)
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# height, width and number of codepoints out of bounds
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font = FontFile("02_variant_invalid.zmfnt")
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font.write_file_header(GOOD_MAGIC)
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font.write_bm_header(201, 65, 256, 0)
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# mismatch between number of codepoints specified in header and actually stored ones
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font = FontFile("03_missing_cps.zmfnt")
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font.write_file_header(GOOD_MAGIC)
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offs = 0
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for _ in range(NUM_FONT_SIZES):
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font.write_bm_header(10, 10, 10, offs)
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offs += 10 * 10
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for _ in range(NUM_FONT_SIZES):
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font.write_codepoints(1, 10, 9)
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font = FontFile("04_valid.zmfnt")
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font.write_file_header(GOOD_MAGIC)
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offs = 0
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for i in range(NUM_FONT_SIZES):
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font.write_bm_header(10 + i, 10 + i, 10, offs)
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offs += 10 * (10 + i)
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for i in range(NUM_FONT_SIZES):
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font.write_codepoints(i, 10 + i, 10)
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