import DefaultTable
import struct, sstruct
from fontTools.misc.textTools import safeEval
import string
import types
nameRecordFormat = """
> # big endian
platformID: H
platEncID: H
langID: H
nameID: H
length: H
offset: H
"""
nameRecordSize = sstruct.calcsize(nameRecordFormat)
class table__n_a_m_e(DefaultTable.DefaultTable):
def decompile(self, data, ttFont):
format, n, stringOffset = struct.unpack(">HHH", data[:6])
expectedStringOffset = 6 + n * nameRecordSize
if stringOffset != expectedStringOffset:
# XXX we need a warn function
print "Warning: 'name' table stringOffset incorrect.",
print "Expected: %s; Actual: %s" % (expectedStringOffset, stringOffset)
stringData = data[stringOffset:]
data = data[6:]
self.names = []
for i in range(n):
if len(data) < 12:
# compensate for buggy font
break
name, data = sstruct.unpack2(nameRecordFormat, data, NameRecord())
name.string = stringData[name.offset:name.offset+name.length]
assert len(name.string) == name.length
#if (name.platEncID, name.platformID) in ((0, 0), (1, 3)):
# if len(name.string) % 2:
# print "2-byte string doesn't have even length!"
# print name.__dict__
del name.offset, name.length
self.names.append(name)
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
def toXML(self, writer, ttFont):
for name in self.names:
name.toXML(writer, ttFont)
def fromXML(self, (name, attrs, content), ttFont):
if name <> "namerecord":
return # ignore unknown tags
if not hasattr(self, "names"):
self.names = []
name = NameRecord()
self.names.append(name)
name.fromXML((name, attrs, content), ttFont)
def getName(self, nameID, platformID, platEncID, langID=None):
for namerecord in self.names:
if ( namerecord.nameID == nameID and
namerecord.platformID == platformID and
namerecord.platEncID == platEncID):
if langID is None or namerecord.langID == langID:
return namerecord
return None # not found
def __cmp__(self, other):
return cmp(self.names, other.names)
class NameRecord:
def toXML(self, writer, ttFont):
writer.begintag("namerecord", [
("nameID", self.nameID),
("platformID", self.platformID),
("platEncID", self.platEncID),
("langID", hex(self.langID)),
])
writer.newline()
if self.platformID == 0 or (self.platformID == 3 and self.platEncID in (0, 1)):
if len(self.string) % 2:
# no, shouldn't happen, but some of the Apple
# tools cause this anyway :-(
writer.write16bit(self.string + "\0")
else:
writer.write16bit(self.string)
else:
writer.write8bit(self.string)
writer.newline()
writer.endtag("namerecord")
writer.newline()
def fromXML(self, (name, attrs, content), ttFont):
self.nameID = safeEval(attrs["nameID"])
self.platformID = safeEval(attrs["platformID"])
self.platEncID = safeEval(attrs["platEncID"])
self.langID = safeEval(attrs["langID"])
if self.platformID == 0 or (self.platformID == 3 and self.platEncID in (0, 1)):
s = ""
for element in content:
s = s + element
s = unicode(s, "utf8")
s = s.strip()
self.string = s.encode("utf_16_be")
else:
s = string.strip(string.join(content, ""))
self.string = unicode(s, "utf8").encode("latin1")
def __cmp__(self, other):
"""Compare method, so a list of NameRecords can be sorted
according to the spec by just sorting it..."""
selftuple = (self.platformID,
self.platEncID,
self.langID,
self.nameID,
self.string)
othertuple = (other.platformID,
other.platEncID,
other.langID,
other.nameID,
other.string)
return cmp(selftuple, othertuple)
def __repr__(self):
return "<NameRecord NameID=%d; PlatformID=%d; LanguageID=%d>" % (
self.nameID, self.platformID, self.langID)
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