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inter/misc/glyphs-scripts/assign-fallback-codepoints.py

81 lines
2.1 KiB
Python

#MenuTitle: Assign fallback codepoints
# -*- coding: utf-8 -*-
__doc__="""
Assigns private-use codepoints to glyphs which are not mapped
to any Unicode codepoints.
This script will ignore glyphs:
- glyphs which are not exported
- glyphs which name starts with "."
- glyphs which name ends with ".case"
- empty glyphs
"""
import sys
from collections import OrderedDict
DRY_RUN = False
font = Glyphs.font
font.disableUpdateInterface()
def isEmpty(g):
for master in g.parent.masters:
layer = g.layers[master.id]
if layer.bounds is not None and layer.bounds.size.width > 0:
return False
return True
def includeGlyph(g):
if not g.export:
return False
if g.name[0] == '.' or g.name[0] == '_':
return False
if g.name.endswith(".case") or g.name.endswith(".cn"):
return False
# finally, return true if the glyph has no codepoint assigned
return g.unicodes is None or len(g.unicodes) == 0
try:
# find next unallocated private-use codepoint
nextcp = 0xE000
for g in font.glyphs:
if g.unicodes is not None:
for c in [int(c, 16) for c in g.unicodes]:
if c <= 0xEFFF and c >= nextcp:
nextcp = c + 1
print('nextcp: %X' % nextcp)
if DRY_RUN:
print('DRY_RUN mode (no actual changes will be made)')
print('————————————————')
# for printing
mappings = OrderedDict()
longest_gname = 0
# assign private-use codepoints to glyphs that have no existing unicode mapping
for g in font.glyphs:
if includeGlyph(g):
# error on empty glyphs -- there should be no unmapped empty glyphs
if isEmpty(g):
sys.stderr.write('ERR: glyph %r is empty but has no unicode mapping (skipping)\n' % g.name)
continue
unicodes = [hex(nextcp).upper()[2:]]
mappings[g.name] = unicodes[0]
if len(g.name) > longest_gname:
longest_gname = len(g.name)
if not DRY_RUN:
g.unicodes = unicodes
nextcp += 1
# print mappings made
for gname, cp in mappings.iteritems():
print('%s %s' % (gname.ljust(longest_gname), cp))
finally:
font.enableUpdateInterface()