fonttools/Lib/fontTools/misc/encodingTools.py
2015-04-19 03:36:20 -07:00

74 lines
1.8 KiB
Python

"""fontTools.misc.timeTools.py -- tools for working with OpenType encodings.
"""
from __future__ import print_function, division, absolute_import
from fontTools.misc.py23 import *
import fontTools.encodings.codecs
# Map keyed by platformID, then platEncID, then possibly langID
_encodingMap = {
0: { # Unicode
0: 'utf-16be',
1: 'utf-16be',
2: 'utf-16be',
3: 'utf-16be',
4: 'utf-16be',
5: 'utf-16be',
6: 'utf-16be',
},
1: { # Macintosh
# See
# https://github.com/behdad/fonttools/issues/236
0: { # Macintosh, platEncID==0, keyed by langID
15: "mac-iceland",
17: "mac-turkish",
18: "x-mac-croatian-ttx",
24: "mac-latin2",
25: "mac-latin2",
26: "mac-latin2",
27: "mac-latin2",
28: "mac-latin2",
36: "mac-latin2",
37: "x-mac-romanian-ttx",
38: "mac-latin2",
39: "mac-latin2",
40: "mac-latin2",
Ellipsis: 'mac-roman', # Other
},
1: 'x-mac-japanese-ttx',
2: 'x-mac-chinesetrad-ttx',
3: 'x-mac-korean-ttx',
6: 'mac-greek',
7: 'mac-cyrillic',
25: 'x-mac-chinesesimp-ttx',
29: 'mac-latin2',
35: 'mac-turkish',
37: 'mac-iceland',
},
2: { # ISO
0: 'ascii',
1: 'utf-16be',
2: 'latin1',
},
3: { # Microsoft
0: 'utf-16be',
1: 'utf-16be',
2: 'shift-jis',
3: 'gb2312',
4: 'big5',
5: 'wansung',
6: 'johab',
10: 'utf-16be',
},
}
def getEncoding(platformID, platEncID, langID, default=None):
"""Returns the Python encoding name for OpenType platformID/encodingID/langID
triplet. If encoding for these values is not known, by default None is
returned. That can be overriden by passing a value to the default argument.
"""
encoding = _encodingMap.get(platformID, {}).get(platEncID, default)
if isinstance(encoding, dict):
encoding = encoding.get(langID, encoding[Ellipsis])
return encoding