1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
from . import DefaultTable
from . import ttProgram
class table__f_p_g_m(DefaultTable.DefaultTable):
"""Font Program table
The ``fpgm`` table typically contains function defintions that are
used by font instructions. This Font Program is similar to the Control
Value Program that is stored in the ``prep`` table, but
the ``fpgm`` table is only executed one time, when the font is first
used.
See also https://learn.microsoft.com/en-us/typography/opentype/spec/fpgm
"""
def decompile(self, data, ttFont):
program = ttProgram.Program()
program.fromBytecode(data)
self.program = program
def compile(self, ttFont):
if hasattr(self, "program"):
return self.program.getBytecode()
return b""
def toXML(self, writer, ttFont):
self.program.toXML(writer, ttFont)
def fromXML(self, name, attrs, content, ttFont):
program = ttProgram.Program()
program.fromXML(name, attrs, content, ttFont)
self.program = program
def __bool__(self):
"""
>>> fpgm = table__f_p_g_m()
>>> bool(fpgm)
False
>>> p = ttProgram.Program()
>>> fpgm.program = p
>>> bool(fpgm)
False
>>> bc = bytearray([0])
>>> p.fromBytecode(bc)
>>> bool(fpgm)
True
>>> p.bytecode.pop()
0
>>> bool(fpgm)
False
"""
return hasattr(self, "program") and bool(self.program)
__nonzero__ = __bool__
if __name__ == "__main__":
import sys
import doctest
sys.exit(doctest.testmod().failed)
|
