def compile(self, ttFont):
if not hasattr(self, "names"):
# only happens when there are NO name table entries read
# from the TTX file
self.names = []
self.names.sort() # sort according to the spec; see NameRecord.__cmp__()
stringData = ""
format = 0
n = len(self.names)
stringoffset = 6 + n * sstruct.calcsize(nameRecordFormat)
data = struct.pack(">HHH", format, n, stringoffset)
lastoffset = 0
done = {} # remember the data so we can reuse the "pointers"
for name in self.names:
if done.has_key(name.string):
name.offset, name.length = done[name.string]
else:
name.offset, name.length = done[name.string] = len(stringData), len(name.string)
stringData = stringData + name.string
data = data + sstruct.pack(nameRecordFormat, name)
return data + stringData
self.file.seek(self.tables['head'].offset + 8)
self.file.write(struct.pack(">l", checksumadjustment))
# -- sfnt directory helpers and cruft
sfntDirectoryFormat = """
> # big endian
sfntVersion: 4s
numTables: H # number of tables
searchRange: H # (max2 <= numTables)*16
entrySelector: H # log2(max2 <= numTables)
rangeShift: H # numTables*16-searchRange
"""
sfntDirectorySize = sstruct.calcsize(sfntDirectoryFormat)
sfntDirectoryEntryFormat = """
> # big endian
tag: 4s
checkSum: l
offset: l
length: l
"""
sfntDirectoryEntrySize = sstruct.calcsize(sfntDirectoryEntryFormat)
class SFNTDirectoryEntry:
def fromFile(self, file):
sstruct.unpack(sfntDirectoryEntryFormat,
