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Fix cmap table generation not handling contiguous indices

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Also fix tab indentation in code imported from fonttools.
This commit is contained in:
Kovid Goyal 2013-09-19 12:03:12 +05:30
parent 46ed78b892
commit 85d09338d7
1 changed files with 105 additions and 109 deletions
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16
src/calibre/utils/fonts/sfnt/cmap.py
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@ -253,17 +253,15 @@ class CmapTable(UnknownTable):
id_range_offset = []
glyph_index_array = []
for i in xrange(len(end_code)-1): # skip the closing codes (0xffff)
indices = []
for char_code in xrange(start_code[i], end_code[i] + 1):
indices.append(cmap[char_code])
if (indices == xrange(indices[0], indices[0] + len(indices))):
indices = list(cmap[char_code] for char_code in xrange(start_code[i], end_code[i] + 1))
if indices == list(xrange(indices[0], indices[0] + len(indices))):
# indices is a contiguous list
id_delta_temp = set_id_delta(indices[0] - start_code[i])
id_delta.append(id_delta_temp)
id_range_offset.append(0)
else:
id_delta.append(0)
id_range_offset.append(2 * (len(end_code) +
len(glyph_index_array) - i))
id_range_offset.append(2 * (len(end_code) + len(glyph_index_array) - i))
glyph_index_array.extend(indices)
id_delta.append(1) # 0xffff + 1 == 0. So this end code maps to .notdef
id_range_offset.append(0)
@ -282,12 +280,10 @@ class CmapTable(UnknownTable):
data = char_code_array + id_delta_array + rest_array
length = calcsize(fmt) + len(data)
header = pack(fmt, 4, length, 0,
2*seg_count, search_range, entry_selector, range_shift)
header = pack(fmt, 4, length, 0, 2*seg_count, search_range, entry_selector, range_shift)
self.bmp_table = header + data
fmt = b'>4HL'
offset = calcsize(fmt)
self.raw = pack(fmt, self.version, self.num_tables, 3, 1, offset) + \
self.bmp_table
self.raw = pack(fmt, self.version, self.num_tables, 3, 1, offset) + self.bmp_table