1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
import copy
def shaper_inputs(self):
return self.input
def _do_apply(self, buf, ix, namedclasses={}):
from fontFeatures.shaperLib.Rule import _expand_slot
coverage = buf[ix : ix + len(self.input)]
newstuff = []
# Handle single subst first
if len(self.input) == 1 and len(self.replacement) == 1:
replacements = _expand_slot(self.replacement[0], namedclasses)
if len(replacements) == 1:
buf[ix].glyph = replacements[0]
else:
inputs = _expand_slot(self.input[0], namedclasses)
buf[ix].glyph = replacements[inputs.index(buf[ix].glyph)]
buf[ix].prep_glyph(buf.font)
return
delta = len(self.replacement) - 1
for g in self.replacement:
new_glyph = copy.copy(buf[ix])
new_glyph.glyph = g[0]
new_glyph.prep_glyph(buf.font)
new_glyph.substituted = True
if len(self.replacement) > 1 and len(coverage) == 1:
new_glyph.multiplied = True
if len(self.replacement) == 1 and len(coverage) > 1:
new_glyph.ligated = True
newstuff.append(new_glyph)
buf[ix : ix + len(self.input)] = newstuff
if delta > 0:
return delta
|
