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Added getBestCmap() convenience method to the cmap table, to return the best available unicode cmap in the font

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justvanrossum 2017-11-03 11:36:01 +01:00
parent 045287aa25
commit 9dcddb853a
1 changed files with 12 additions and 0 deletions
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12
Lib/fontTools/ttLib/tables/_c_m_a_p.py
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@ -38,6 +38,18 @@ class table__c_m_a_p(DefaultTable.DefaultTable):
return subtable return subtable
return None # not found return None # not found
def getBestCmap(self, cmapPreferences=((3, 10), (3, 1), (0, 3))):
"""Return the 'best' unicode cmap dictionary available in the font.
By default it will search for the following (platformID, platEncID) pairs:
(3, 10), (3, 1), (0, 3)
But this can be customized via the cmapPreferences argument.
"""
for platformID, platEncID in cmapPreferences:
cmapSubtable = self.getcmap(platformID, platEncID)
if cmapSubtable is not None:
return cmapSubtable.cmap
raise ValueError("None of the requested cmap subtables were found")
def buildReversed(self): def buildReversed(self):
"""Returns a reverse cmap such as {'one':{0x31}, 'A':{0x41,0x391}}. """Returns a reverse cmap such as {'one':{0x31}, 'A':{0x41,0x391}}.