ca80208a15
For the sake of separating py23 effort from feature changes, I'm reverting the name table XML dump format back to what it was. I will clean it up after py23 is merged.
150 lines
4.6 KiB
Python
150 lines
4.6 KiB
Python
from __future__ import print_function, division
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from fontTools.misc.py23 import *
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from fontTools.misc import sstruct
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from fontTools.misc.textTools import safeEval
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from . import DefaultTable
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import struct
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nameRecordFormat = """
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> # big endian
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platformID: H
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platEncID: H
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langID: H
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nameID: H
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length: H
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offset: H
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"""
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nameRecordSize = sstruct.calcsize(nameRecordFormat)
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class table__n_a_m_e(DefaultTable.DefaultTable):
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def decompile(self, data, ttFont):
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format, n, stringOffset = struct.unpack(">HHH", data[:6])
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expectedStringOffset = 6 + n * nameRecordSize
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if stringOffset != expectedStringOffset:
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# XXX we need a warn function
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print("Warning: 'name' table stringOffset incorrect. Expected: %s; Actual: %s" % (expectedStringOffset, stringOffset))
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stringData = data[stringOffset:]
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data = data[6:]
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self.names = []
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for i in range(n):
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if len(data) < 12:
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# compensate for buggy font
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break
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name, data = sstruct.unpack2(nameRecordFormat, data, NameRecord())
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name.string = stringData[name.offset:name.offset+name.length]
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assert len(name.string) == name.length
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#if (name.platEncID, name.platformID) in ((0, 0), (1, 3)):
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# if len(name.string) % 2:
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# print "2-byte string doesn't have even length!"
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# print name.__dict__
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del name.offset, name.length
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self.names.append(name)
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def compile(self, ttFont):
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if not hasattr(self, "names"):
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# only happens when there are NO name table entries read
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# from the TTX file
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self.names = []
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self.names.sort() # sort according to the spec; see NameRecord.__lt__()
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stringData = b""
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format = 0
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n = len(self.names)
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stringOffset = 6 + n * sstruct.calcsize(nameRecordFormat)
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data = struct.pack(">HHH", format, n, stringOffset)
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lastoffset = 0
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done = {} # remember the data so we can reuse the "pointers"
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for name in self.names:
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if name.string in done:
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name.offset, name.length = done[name.string]
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else:
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name.offset, name.length = done[name.string] = len(stringData), len(name.string)
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stringData = stringData + name.string
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data = data + sstruct.pack(nameRecordFormat, name)
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return data + stringData
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def toXML(self, writer, ttFont):
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for name in self.names:
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name.toXML(writer, ttFont)
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def fromXML(self, name, attrs, content, ttFont):
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if name != "namerecord":
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return # ignore unknown tags
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if not hasattr(self, "names"):
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self.names = []
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name = NameRecord()
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self.names.append(name)
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name.fromXML(name, attrs, content, ttFont)
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def getName(self, nameID, platformID, platEncID, langID=None):
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for namerecord in self.names:
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if ( namerecord.nameID == nameID and
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namerecord.platformID == platformID and
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namerecord.platEncID == platEncID):
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if langID is None or namerecord.langID == langID:
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return namerecord
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return None # not found
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class NameRecord:
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def toXML(self, writer, ttFont):
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writer.begintag("namerecord", [
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("nameID", self.nameID),
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("platformID", self.platformID),
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("platEncID", self.platEncID),
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("langID", hex(self.langID)),
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])
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writer.newline()
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if self.platformID == 0 or (self.platformID == 3 and self.platEncID in (0, 1)):
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if len(self.string) % 2:
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# no, shouldn't happen, but some of the Apple
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# tools cause this anyway :-(
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writer.write16bit(self.string + b"\0")
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else:
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writer.write16bit(self.string)
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else:
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writer.write8bit(self.string)
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writer.newline()
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writer.endtag("namerecord")
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writer.newline()
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def fromXML(self, name, attrs, content, ttFont):
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self.nameID = safeEval(attrs["nameID"])
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self.platformID = safeEval(attrs["platformID"])
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self.platEncID = safeEval(attrs["platEncID"])
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self.langID = safeEval(attrs["langID"])
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s = strjoin(content).strip()
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if self.platformID == 0 or (self.platformID == 3 and self.platEncID in (0, 1)):
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self.string = s.encode("utf_16_be")
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else:
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# This is the inverse of write8bit...
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self.string = s.encode("latin1")
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def __lt__(self, other):
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if type(self) != type(other):
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raise TypeError("unordered types %s() < %s()", type(self), type(other))
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# implemented so that list.sort() sorts according to the spec.
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selfTuple = (
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getattr(self, "platformID", None),
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getattr(self, "platEncID", None),
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getattr(self, "langID", None),
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getattr(self, "nameID", None),
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getattr(self, "string", None),
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)
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otherTuple = (
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getattr(other, "platformID", None),
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getattr(other, "platEncID", None),
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getattr(other, "langID", None),
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getattr(other, "nameID", None),
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getattr(other, "string", None),
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)
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return selfTuple < otherTuple
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def __repr__(self):
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return "<NameRecord NameID=%d; PlatformID=%d; LanguageID=%d>" % (
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self.nameID, self.platformID, self.langID)
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