shadowfacts/fonttools
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[subset] add --prune-unicode-ranges option (enabled by default)

Browse Source
This commit is contained in:
Cosimo Lupo 2016-01-27 16:43:55 +00:00
parent 328c72f2d8
commit ce5d230eef
1 changed files with 15 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
Lib/fontTools/subset/__init__.py
View File

@ -288,6 +288,14 @@ Other font-specific options:
required by the standard, nor by any known implementation.
--no-canonical-order
Keep original order of font tables. This is faster. [default]
--prune-unicode-ranges
Update the 'OS/2 ulUnicodeRange*' bits after subsetting. The Unicode
ranges defined in the OpenType specification v1.7 are intersected with
the Unicode codepoints specified in the font's Unicode 'cmap' subtables:
when no overlap is found, the bit will be switched off. However, it will
*not* be switched on if an intersection is found. [default]
--no-prune-unicode-ranges
Don't change the 'OS/2 ulUnicodeRange*' bits.
Application options:
--verbose
@ -2327,7 +2335,7 @@ def prune_pre_subset(self, options):
return True # Required table
# TODO(behdad) OS/2 ulUnicodeRange / ulCodePageRange?
# TODO(behdad) OS/2 ulCodePageRange?
# TODO(behdad) Drop AAT tables.
# TODO(behdad) Drop unneeded GSUB/GPOS Script/LangSys entries.
# TODO(behdad) Drop empty GSUB/GPOS, and GDEF if no GSUB/GPOS left
@ -2397,6 +2405,7 @@ class Options(object):
self.recommended_glyphs = False # gid1, gid2, gid3 for TrueType
self.recalc_bounds = False # Recalculate font bounding boxes
self.recalc_timestamp = False # Recalculate font modified timestamp
self.prune_unicode_ranges = True # Clear unused 'ulUnicodeRange' bits
self.canonical_order = False # Order tables as recommended
self.flavor = None # May be 'woff' or 'woff2'
self.desubroutinize = False # Desubroutinize CFF CharStrings
@ -2666,6 +2675,11 @@ class Subsetter(object):
def _prune_post_subset(self, font):
for tag in font.keys():
if tag == 'GlyphOrder': continue
if tag == 'OS/2' and self.options.prune_unicode_ranges:
old_uniranges = font[tag].getUnicodeRanges()
new_uniranges = font[tag].recalcUnicodeRanges(font, pruneOnly=True)
if old_uniranges != new_uniranges:
self.log(tag, "Unicode ranges pruned: %s" % sorted(new_uniranges))
clazz = ttLib.getTableClass(tag)
if hasattr(clazz, 'prune_post_subset'):
table = font[tag]