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Fix #1102403 (Private bug)

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This commit is contained in:
Kovid Goyal 2013-01-22 22:26:23 +05:30
parent c1729160a3
commit 4cf17349af
1 changed files with 5 additions and 4 deletions
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9
src/calibre/utils/fonts/sfnt/metrics.py
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@ -20,6 +20,10 @@ class FontMetrics(object):
'''
def __init__(self, sfnt):
for table in (b'head', b'hhea', b'hmtx', b'cmap', b'OS/2', b'post',
b'name'):
if table not in sfnt:
raise UnsupportedFont('This font has no %s table'%table)
self.sfnt = sfnt
self.head = self.sfnt[b'head']
@ -32,10 +36,7 @@ class FontMetrics(object):
self._advance_widths = hhea.advance_widths
self.cmap = self.sfnt[b'cmap']
self.units_per_em = self.head.units_per_em
try:
self.os2 = self.sfnt[b'OS/2']
except KeyError:
raise UnsupportedFont('This font has no OS/2 table')
self.os2 = self.sfnt[b'OS/2']
self.os2.read_data()
self.post = self.sfnt[b'post']
self.post.read_data()