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[otBase] Add array reader/writer for UInt24

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This commit is contained in:
Behdad Esfahbod 2021-04-30 16:26:49 -06:00
parent a8af308d70
commit 81ca053039
1 changed files with 25 additions and 17 deletions
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42
Lib/fontTools/ttLib/tables/otBase.py
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@ -184,7 +184,8 @@ class OTTableReader(object):
value, = struct.unpack(">l", b'\0'+self.data[pos:newpos])
self.pos = newpos
return value
def readUInt24Array(self, count):
return [self.readUInt24() for _ in range(count)]
def readTag(self):
pos = self.pos
@ -433,11 +434,11 @@ class OTTableWriter(object):
if sys.byteorder != "big": a.byteswap()
self.items.append(a.tobytes())
def writeUShort(self, value):
assert 0 <= value < 0x10000, value
self.items.append(struct.pack(">H", value))
def writeUShortArray(self, values):
self.writeArray('H', values)
def writeInt8(self, value):
assert -128 <= value < 128, value
self.items.append(struct.pack(">b", value))
def writeInt8Array(self, values):
self.writeArray('b', values)
def writeShort(self, value):
assert -32768 <= value < 32768, value
@ -445,28 +446,35 @@ class OTTableWriter(object):
def writeShortArray(self, values):
self.writeArray('h', values)
def writeLong(self, value):
self.items.append(struct.pack(">l", value))
def writeLongArray(self, values):
self.writeArray('l', values)
def writeUInt8(self, value):
assert 0 <= value < 256, value
self.items.append(struct.pack(">B", value))
def writeUInt8Array(self, values):
self.writeArray('B', values)
def writeInt8(self, value):
assert -128 <= value < 128, value
self.items.append(struct.pack(">b", value))
def writeInt8Array(self, values):
self.writeArray('b', values)
def writeUShort(self, value):
assert 0 <= value < 0x10000, value
self.items.append(struct.pack(">H", value))
def writeUShortArray(self, values):
self.writeArray('H', values)
def writeULong(self, value):
self.items.append(struct.pack(">L", value))
def writeULongArray(self, values):
self.writeArray('L', values)
def writeUInt24(self, value):
assert 0 <= value < 0x1000000, value
b = struct.pack(">L", value)
self.items.append(b[1:])
def writeLong(self, value):
self.items.append(struct.pack(">l", value))
def writeULong(self, value):
self.items.append(struct.pack(">L", value))
def writeUInt24Array(self, values):
for value in values:
self.writeUInt24(value)
def writeTag(self, tag):
tag = Tag(tag).tobytes()