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Use the endchar operator for glyphs that have been subsetted out instead of the empty string as some cff font renderers (adobe) have problems with empty strings

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Kovid Goyal 2012-11-09 13:32:41 +05:30
parent 5729fdb0e5
commit 1873e95b38
2 changed files with 3 additions and 7 deletions
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3
src/calibre/utils/fonts/sfnt/cff/writer.py
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@ -124,10 +124,11 @@ def __init__(self, cff, keep_charnames):
charsets = Charsets(strings)
charsets.extend(cff.charset[1:]) # .notdef is not included
endchar_operator = bytes(bytearray([14]))
for i in xrange(self.cff.num_glyphs):
cname = self.cff.charset.safe_lookup(i)
ok = cname in keep_charnames
cs = self.cff.char_strings[i] if ok else b''
cs = self.cff.char_strings[i] if ok else endchar_operator
char_strings.append(cs)
if ok:
self.charname_map[cname] = i

7
src/calibre/utils/fonts/sfnt/subset.py
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@ -96,12 +96,7 @@ def subset(raw, individual_chars, ranges=()):
subset_truetype(sfnt, character_map)
elif b'CFF ' in sfnt:
# PostScript Outlines
from calibre.utils.config_base import tweaks
if tweaks['subset_cff_table']:
subset_postscript(sfnt, character_map)
else:
raise UnsupportedFont('This font contains PostScript outlines, '
'subsetting not supported')
subset_postscript(sfnt, character_map)
else:
raise UnsupportedFont('This font does not contain TrueType '
'or PostScript outlines')