Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 1 | #!/usr/bin/python |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 2 | |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 3 | # Copyright 2013 Google, Inc. All Rights Reserved. |
| 4 | # |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 5 | # Licensed under the Apache License, Version 2.0(the "License"); |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 6 | # you may not use this file except in compliance with the License. |
| 7 | # You may obtain a copy of the License at |
| 8 | # |
| 9 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | # |
| 11 | # Unless required by applicable law or agreed to in writing, software |
| 12 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | # See the License for the specific language governing permissions and |
| 15 | # limitations under the License. |
| 16 | # |
| 17 | # Google Author(s): Behdad Esfahbod |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 18 | |
| 19 | """Python OpenType Layout Subsetter. |
| 20 | |
| 21 | Later grown into full OpenType subsetter, supporting all standard tables. |
| 22 | """ |
| 23 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 24 | |
Behdad Esfahbod | fa3bc5e | 2013-07-24 14:37:58 -0400 | [diff] [blame] | 25 | # Try running on PyPy |
| 26 | try: |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 27 | import numpypy |
Behdad Esfahbod | fa3bc5e | 2013-07-24 14:37:58 -0400 | [diff] [blame] | 28 | except ImportError: |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 29 | pass |
Behdad Esfahbod | fa3bc5e | 2013-07-24 14:37:58 -0400 | [diff] [blame] | 30 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 31 | import fontTools.ttx |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 32 | import struct |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 33 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 34 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 35 | def __add_method(*clazzes): |
| 36 | """Returns a decorator function that adds a new method to one or |
| 37 | more classes.""" |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 38 | def wrapper(method): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 39 | for clazz in clazzes: |
| 40 | assert clazz.__name__ != 'DefaultTable', 'Oops, table class not found.' |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 41 | setattr(clazz, method.func_name, method) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 42 | return None |
| 43 | return wrapper |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 44 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 45 | def unique_sorted(l): |
| 46 | return sorted(set(l)) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 47 | |
| 48 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 49 | @__add_method(fontTools.ttLib.tables.otTables.Coverage) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 50 | def intersect(self, glyphs): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 51 | "Returns ascending list of matching coverage values." |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 52 | return [i for(i,g) in enumerate(self.glyphs) if g in glyphs] |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 53 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 54 | @__add_method(fontTools.ttLib.tables.otTables.Coverage) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 55 | def intersect_glyphs(self, glyphs): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 56 | "Returns set of intersecting glyphs." |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 57 | return set(g for g in self.glyphs if g in glyphs) |
Behdad Esfahbod | 849d25c | 2013-08-12 19:24:24 -0400 | [diff] [blame] | 58 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 59 | @__add_method(fontTools.ttLib.tables.otTables.Coverage) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 60 | def subset(self, glyphs): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 61 | "Returns ascending list of remaining coverage values." |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 62 | indices = self.intersect(glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 63 | self.glyphs = [g for g in self.glyphs if g in glyphs] |
| 64 | return indices |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 65 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 66 | @__add_method(fontTools.ttLib.tables.otTables.Coverage) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 67 | def remap(self, coverage_map): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 68 | "Remaps coverage." |
| 69 | self.glyphs = [self.glyphs[i] for i in coverage_map] |
Behdad Esfahbod | 1437426 | 2013-08-08 22:26:49 -0400 | [diff] [blame] | 70 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 71 | @__add_method(fontTools.ttLib.tables.otTables.ClassDef) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 72 | def intersect(self, glyphs): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 73 | "Returns ascending list of matching class values." |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 74 | return unique_sorted( |
| 75 | ([0] if any(g not in self.classDefs for g in glyphs) else []) + |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 76 | [v for g,v in self.classDefs.iteritems() if g in glyphs]) |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 77 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 78 | @__add_method(fontTools.ttLib.tables.otTables.ClassDef) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 79 | def intersect_class(self, glyphs, klass): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 80 | "Returns set of glyphs matching class." |
| 81 | if klass == 0: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 82 | return set(g for g in glyphs if g not in self.classDefs) |
| 83 | return set(g for g,v in self.classDefs.iteritems() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 84 | if v == klass and g in glyphs) |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 85 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 86 | @__add_method(fontTools.ttLib.tables.otTables.ClassDef) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 87 | def subset(self, glyphs, remap=False): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 88 | "Returns ascending list of remaining classes." |
| 89 | self.classDefs = {g:v for g,v in self.classDefs.iteritems() if g in glyphs} |
| 90 | # Note: while class 0 has the special meaning of "not matched", |
| 91 | # if no glyph will ever /not match/, we can optimize class 0 out too. |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 92 | indices = unique_sorted( |
| 93 | ([0] if any(g not in self.classDefs for g in glyphs) else []) + |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 94 | self.classDefs.itervalues()) |
| 95 | if remap: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 96 | self.remap(indices) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 97 | return indices |
Behdad Esfahbod | 4aa6ce3 | 2013-07-22 12:15:36 -0400 | [diff] [blame] | 98 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 99 | @__add_method(fontTools.ttLib.tables.otTables.ClassDef) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 100 | def remap(self, class_map): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 101 | "Remaps classes." |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 102 | self.classDefs = {g:class_map.index(v) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 103 | for g,v in self.classDefs.iteritems()} |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 104 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 105 | @__add_method(fontTools.ttLib.tables.otTables.SingleSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 106 | def closure_glyphs(self, s, cur_glyphs=None): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 107 | if cur_glyphs == None: cur_glyphs = s.glyphs |
| 108 | if self.Format in [1, 2]: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 109 | s.glyphs.update(v for g,v in self.mapping.iteritems() if g in cur_glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 110 | else: |
| 111 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 112 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 113 | @__add_method(fontTools.ttLib.tables.otTables.SingleSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 114 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 115 | if self.Format in [1, 2]: |
| 116 | self.mapping = {g:v for g,v in self.mapping.iteritems() |
| 117 | if g in s.glyphs and v in s.glyphs} |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 118 | return bool(self.mapping) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 119 | else: |
| 120 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 121 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 122 | @__add_method(fontTools.ttLib.tables.otTables.MultipleSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 123 | def closure_glyphs(self, s, cur_glyphs=None): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 124 | if cur_glyphs == None: cur_glyphs = s.glyphs |
| 125 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 126 | indices = self.Coverage.intersect(cur_glyphs) |
| 127 | s.glyphs.update(*(self.Sequence[i].Substitute for i in indices)) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 128 | else: |
| 129 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 130 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 131 | @__add_method(fontTools.ttLib.tables.otTables.MultipleSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 132 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 133 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 134 | indices = self.Coverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 135 | self.Sequence = [self.Sequence[i] for i in indices] |
| 136 | # Now drop rules generating glyphs we don't want |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 137 | indices = [i for i,seq in enumerate(self.Sequence) |
| 138 | if all(sub in s.glyphs for sub in seq.Substitute)] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 139 | self.Sequence = [self.Sequence[i] for i in indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 140 | self.Coverage.remap(indices) |
| 141 | self.SequenceCount = len(self.Sequence) |
| 142 | return bool(self.SequenceCount) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 143 | else: |
| 144 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 145 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 146 | @__add_method(fontTools.ttLib.tables.otTables.AlternateSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 147 | def closure_glyphs(self, s, cur_glyphs=None): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 148 | if cur_glyphs == None: cur_glyphs = s.glyphs |
| 149 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 150 | s.glyphs.update(*(vlist for g,vlist in self.alternates.iteritems() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 151 | if g in cur_glyphs)) |
| 152 | else: |
| 153 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 154 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 155 | @__add_method(fontTools.ttLib.tables.otTables.AlternateSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 156 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 157 | if self.Format == 1: |
| 158 | self.alternates = {g:vlist for g,vlist in self.alternates.iteritems() |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 159 | if g in s.glyphs and all(v in s.glyphs for v in vlist)} |
| 160 | return bool(self.alternates) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 161 | else: |
| 162 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 163 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 164 | @__add_method(fontTools.ttLib.tables.otTables.LigatureSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 165 | def closure_glyphs(self, s, cur_glyphs=None): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 166 | if cur_glyphs == None: cur_glyphs = s.glyphs |
| 167 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 168 | s.glyphs.update(*([seq.LigGlyph for seq in seqs |
| 169 | if all(c in s.glyphs for c in seq.Component)] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 170 | for g,seqs in self.ligatures.iteritems() |
| 171 | if g in cur_glyphs)) |
| 172 | else: |
| 173 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 174 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 175 | @__add_method(fontTools.ttLib.tables.otTables.LigatureSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 176 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 177 | if self.Format == 1: |
| 178 | self.ligatures = {g:v for g,v in self.ligatures.iteritems() |
| 179 | if g in s.glyphs} |
| 180 | self.ligatures = {g:[seq for seq in seqs |
| 181 | if seq.LigGlyph in s.glyphs and |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 182 | all(c in s.glyphs for c in seq.Component)] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 183 | for g,seqs in self.ligatures.iteritems()} |
| 184 | self.ligatures = {g:v for g,v in self.ligatures.iteritems() if v} |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 185 | return bool(self.ligatures) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 186 | else: |
| 187 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 188 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 189 | @__add_method(fontTools.ttLib.tables.otTables.ReverseChainSingleSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 190 | def closure_glyphs(self, s, cur_glyphs=None): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 191 | if cur_glyphs == None: cur_glyphs = s.glyphs |
| 192 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 193 | indices = self.Coverage.intersect(cur_glyphs) |
| 194 | if(not indices or |
| 195 | not all(c.intersect(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 196 | for c in self.LookAheadCoverage + self.BacktrackCoverage)): |
| 197 | return |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 198 | s.glyphs.update(self.Substitute[i] for i in indices) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 199 | else: |
| 200 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 201 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 202 | @__add_method(fontTools.ttLib.tables.otTables.ReverseChainSingleSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 203 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 204 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 205 | indices = self.Coverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 206 | self.Substitute = [self.Substitute[i] for i in indices] |
| 207 | # Now drop rules generating glyphs we don't want |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 208 | indices = [i for i,sub in enumerate(self.Substitute) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 209 | if sub in s.glyphs] |
| 210 | self.Substitute = [self.Substitute[i] for i in indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 211 | self.Coverage.remap(indices) |
| 212 | self.GlyphCount = len(self.Substitute) |
| 213 | return bool(self.GlyphCount and |
| 214 | all(c.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 215 | for c in self.LookAheadCoverage+self.BacktrackCoverage)) |
| 216 | else: |
| 217 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 218 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 219 | @__add_method(fontTools.ttLib.tables.otTables.SinglePos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 220 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 221 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 222 | return len(self.Coverage.subset(s.glyphs)) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 223 | elif self.Format == 2: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 224 | indices = self.Coverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 225 | self.Value = [self.Value[i] for i in indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 226 | self.ValueCount = len(self.Value) |
| 227 | return bool(self.ValueCount) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 228 | else: |
| 229 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 230 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 231 | @__add_method(fontTools.ttLib.tables.otTables.PairPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 232 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 233 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 234 | indices = self.Coverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 235 | self.PairSet = [self.PairSet[i] for i in indices] |
| 236 | for p in self.PairSet: |
| 237 | p.PairValueRecord = [r for r in p.PairValueRecord |
| 238 | if r.SecondGlyph in s.glyphs] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 239 | p.PairValueCount = len(p.PairValueRecord) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 240 | self.PairSet = [p for p in self.PairSet if p.PairValueCount] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 241 | self.PairSetCount = len(self.PairSet) |
| 242 | return bool(self.PairSetCount) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 243 | elif self.Format == 2: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 244 | class1_map = self.ClassDef1.subset(s.glyphs, remap=True) |
| 245 | class2_map = self.ClassDef2.subset(s.glyphs, remap=True) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 246 | self.Class1Record = [self.Class1Record[i] for i in class1_map] |
| 247 | for c in self.Class1Record: |
| 248 | c.Class2Record = [c.Class2Record[i] for i in class2_map] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 249 | self.Class1Count = len(class1_map) |
| 250 | self.Class2Count = len(class2_map) |
| 251 | return bool(self.Class1Count and |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 252 | self.Class2Count and |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 253 | self.Coverage.subset(s.glyphs)) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 254 | else: |
| 255 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 256 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 257 | @__add_method(fontTools.ttLib.tables.otTables.CursivePos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 258 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 259 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 260 | indices = self.Coverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 261 | self.EntryExitRecord = [self.EntryExitRecord[i] for i in indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 262 | self.EntryExitCount = len(self.EntryExitRecord) |
| 263 | return bool(self.EntryExitCount) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 264 | else: |
| 265 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 266 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 267 | @__add_method(fontTools.ttLib.tables.otTables.MarkBasePos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 268 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 269 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 270 | mark_indices = self.MarkCoverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 271 | self.MarkArray.MarkRecord = [self.MarkArray.MarkRecord[i] |
| 272 | for i in mark_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 273 | self.MarkArray.MarkCount = len(self.MarkArray.MarkRecord) |
| 274 | base_indices = self.BaseCoverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 275 | self.BaseArray.BaseRecord = [self.BaseArray.BaseRecord[i] |
| 276 | for i in base_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 277 | self.BaseArray.BaseCount = len(self.BaseArray.BaseRecord) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 278 | # Prune empty classes |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 279 | class_indices = unique_sorted(v.Class for v in self.MarkArray.MarkRecord) |
| 280 | self.ClassCount = len(class_indices) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 281 | for m in self.MarkArray.MarkRecord: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 282 | m.Class = class_indices.index(m.Class) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 283 | for b in self.BaseArray.BaseRecord: |
| 284 | b.BaseAnchor = [b.BaseAnchor[i] for i in class_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 285 | return bool(self.ClassCount and |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 286 | self.MarkArray.MarkCount and |
| 287 | self.BaseArray.BaseCount) |
| 288 | else: |
| 289 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 290 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 291 | @__add_method(fontTools.ttLib.tables.otTables.MarkLigPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 292 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 293 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 294 | mark_indices = self.MarkCoverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 295 | self.MarkArray.MarkRecord = [self.MarkArray.MarkRecord[i] |
| 296 | for i in mark_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 297 | self.MarkArray.MarkCount = len(self.MarkArray.MarkRecord) |
| 298 | ligature_indices = self.LigatureCoverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 299 | self.LigatureArray.LigatureAttach = [self.LigatureArray.LigatureAttach[i] |
| 300 | for i in ligature_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 301 | self.LigatureArray.LigatureCount = len(self.LigatureArray.LigatureAttach) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 302 | # Prune empty classes |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 303 | class_indices = unique_sorted(v.Class for v in self.MarkArray.MarkRecord) |
| 304 | self.ClassCount = len(class_indices) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 305 | for m in self.MarkArray.MarkRecord: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 306 | m.Class = class_indices.index(m.Class) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 307 | for l in self.LigatureArray.LigatureAttach: |
| 308 | for c in l.ComponentRecord: |
| 309 | c.LigatureAnchor = [c.LigatureAnchor[i] for i in class_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 310 | return bool(self.ClassCount and |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 311 | self.MarkArray.MarkCount and |
| 312 | self.LigatureArray.LigatureCount) |
| 313 | else: |
| 314 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 315 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 316 | @__add_method(fontTools.ttLib.tables.otTables.MarkMarkPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 317 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 318 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 319 | mark1_indices = self.Mark1Coverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 320 | self.Mark1Array.MarkRecord = [self.Mark1Array.MarkRecord[i] |
| 321 | for i in mark1_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 322 | self.Mark1Array.MarkCount = len(self.Mark1Array.MarkRecord) |
| 323 | mark2_indices = self.Mark2Coverage.subset(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 324 | self.Mark2Array.Mark2Record = [self.Mark2Array.Mark2Record[i] |
| 325 | for i in mark2_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 326 | self.Mark2Array.MarkCount = len(self.Mark2Array.Mark2Record) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 327 | # Prune empty classes |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 328 | class_indices = unique_sorted(v.Class for v in self.Mark1Array.MarkRecord) |
| 329 | self.ClassCount = len(class_indices) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 330 | for m in self.Mark1Array.MarkRecord: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 331 | m.Class = class_indices.index(m.Class) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 332 | for b in self.Mark2Array.Mark2Record: |
| 333 | b.Mark2Anchor = [b.Mark2Anchor[i] for i in class_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 334 | return bool(self.ClassCount and |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 335 | self.Mark1Array.MarkCount and |
| 336 | self.Mark2Array.MarkCount) |
| 337 | else: |
| 338 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 339 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 340 | @__add_method(fontTools.ttLib.tables.otTables.SingleSubst, |
| 341 | fontTools.ttLib.tables.otTables.MultipleSubst, |
| 342 | fontTools.ttLib.tables.otTables.AlternateSubst, |
| 343 | fontTools.ttLib.tables.otTables.LigatureSubst, |
| 344 | fontTools.ttLib.tables.otTables.ReverseChainSingleSubst, |
| 345 | fontTools.ttLib.tables.otTables.SinglePos, |
| 346 | fontTools.ttLib.tables.otTables.PairPos, |
| 347 | fontTools.ttLib.tables.otTables.CursivePos, |
| 348 | fontTools.ttLib.tables.otTables.MarkBasePos, |
| 349 | fontTools.ttLib.tables.otTables.MarkLigPos, |
| 350 | fontTools.ttLib.tables.otTables.MarkMarkPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 351 | def subset_lookups(self, lookup_indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 352 | pass |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 353 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 354 | @__add_method(fontTools.ttLib.tables.otTables.SingleSubst, |
| 355 | fontTools.ttLib.tables.otTables.MultipleSubst, |
| 356 | fontTools.ttLib.tables.otTables.AlternateSubst, |
| 357 | fontTools.ttLib.tables.otTables.LigatureSubst, |
| 358 | fontTools.ttLib.tables.otTables.ReverseChainSingleSubst, |
| 359 | fontTools.ttLib.tables.otTables.SinglePos, |
| 360 | fontTools.ttLib.tables.otTables.PairPos, |
| 361 | fontTools.ttLib.tables.otTables.CursivePos, |
| 362 | fontTools.ttLib.tables.otTables.MarkBasePos, |
| 363 | fontTools.ttLib.tables.otTables.MarkLigPos, |
| 364 | fontTools.ttLib.tables.otTables.MarkMarkPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 365 | def collect_lookups(self): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 366 | return [] |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 367 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 368 | @__add_method(fontTools.ttLib.tables.otTables.SingleSubst, |
| 369 | fontTools.ttLib.tables.otTables.AlternateSubst, |
| 370 | fontTools.ttLib.tables.otTables.ReverseChainSingleSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 371 | def may_have_non_1to1(self): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 372 | return False |
Behdad Esfahbod | aeacc15 | 2013-08-12 20:24:33 -0400 | [diff] [blame] | 373 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 374 | @__add_method(fontTools.ttLib.tables.otTables.MultipleSubst, |
| 375 | fontTools.ttLib.tables.otTables.LigatureSubst, |
| 376 | fontTools.ttLib.tables.otTables.ContextSubst, |
| 377 | fontTools.ttLib.tables.otTables.ChainContextSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 378 | def may_have_non_1to1(self): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 379 | return True |
Behdad Esfahbod | aeacc15 | 2013-08-12 20:24:33 -0400 | [diff] [blame] | 380 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 381 | @__add_method(fontTools.ttLib.tables.otTables.ContextSubst, |
| 382 | fontTools.ttLib.tables.otTables.ChainContextSubst, |
| 383 | fontTools.ttLib.tables.otTables.ContextPos, |
| 384 | fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 385 | def __classify_context(self): |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 386 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 387 | class ContextHelper: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 388 | def __init__(self, klass, Format): |
| 389 | if klass.__name__.endswith('Subst'): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 390 | Typ = 'Sub' |
| 391 | Type = 'Subst' |
| 392 | else: |
| 393 | Typ = 'Pos' |
| 394 | Type = 'Pos' |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 395 | if klass.__name__.startswith('Chain'): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 396 | Chain = 'Chain' |
| 397 | else: |
| 398 | Chain = '' |
| 399 | ChainTyp = Chain+Typ |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 400 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 401 | self.Typ = Typ |
| 402 | self.Type = Type |
| 403 | self.Chain = Chain |
| 404 | self.ChainTyp = ChainTyp |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 405 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 406 | self.LookupRecord = Type+'LookupRecord' |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 407 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 408 | if Format == 1: |
| 409 | Coverage = lambda r: r.Coverage |
| 410 | ChainCoverage = lambda r: r.Coverage |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 411 | ContextData = lambda r:(None,) |
| 412 | ChainContextData = lambda r:(None, None, None) |
| 413 | RuleData = lambda r:(r.Input,) |
| 414 | ChainRuleData = lambda r:(r.Backtrack, r.Input, r.LookAhead) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 415 | SetRuleData = None |
| 416 | ChainSetRuleData = None |
| 417 | elif Format == 2: |
| 418 | Coverage = lambda r: r.Coverage |
| 419 | ChainCoverage = lambda r: r.Coverage |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 420 | ContextData = lambda r:(r.ClassDef,) |
| 421 | ChainContextData = lambda r:(r.LookAheadClassDef, |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 422 | r.InputClassDef, |
| 423 | r.BacktrackClassDef) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 424 | RuleData = lambda r:(r.Class,) |
| 425 | ChainRuleData = lambda r:(r.LookAhead, r.Input, r.Backtrack) |
| 426 | def SetRuleData(r, d):(r.Class,) = d |
| 427 | def ChainSetRuleData(r, d):(r.LookAhead, r.Input, r.Backtrack) = d |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 428 | elif Format == 3: |
| 429 | Coverage = lambda r: r.Coverage[0] |
| 430 | ChainCoverage = lambda r: r.InputCoverage[0] |
| 431 | ContextData = None |
| 432 | ChainContextData = None |
| 433 | RuleData = lambda r: r.Coverage |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 434 | ChainRuleData = lambda r:(r.LookAheadCoverage + |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 435 | r.InputCoverage + |
| 436 | r.BacktrackCoverage) |
| 437 | SetRuleData = None |
| 438 | ChainSetRuleData = None |
| 439 | else: |
| 440 | assert 0, "unknown format: %s" % Format |
Behdad Esfahbod | 452ab6c | 2013-07-23 22:57:43 -0400 | [diff] [blame] | 441 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 442 | if Chain: |
| 443 | self.Coverage = ChainCoverage |
| 444 | self.ContextData = ChainContextData |
| 445 | self.RuleData = ChainRuleData |
| 446 | self.SetRuleData = ChainSetRuleData |
| 447 | else: |
| 448 | self.Coverage = Coverage |
| 449 | self.ContextData = ContextData |
| 450 | self.RuleData = RuleData |
| 451 | self.SetRuleData = SetRuleData |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 452 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 453 | if Format == 1: |
| 454 | self.Rule = ChainTyp+'Rule' |
| 455 | self.RuleCount = ChainTyp+'RuleCount' |
| 456 | self.RuleSet = ChainTyp+'RuleSet' |
| 457 | self.RuleSetCount = ChainTyp+'RuleSetCount' |
| 458 | self.Intersect = lambda glyphs, c, r: [r] if r in glyphs else [] |
| 459 | elif Format == 2: |
| 460 | self.Rule = ChainTyp+'ClassRule' |
| 461 | self.RuleCount = ChainTyp+'ClassRuleCount' |
| 462 | self.RuleSet = ChainTyp+'ClassSet' |
| 463 | self.RuleSetCount = ChainTyp+'ClassSetCount' |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 464 | self.Intersect = lambda glyphs, c, r: c.intersect_class(glyphs, r) |
Behdad Esfahbod | 8998700 | 2013-07-23 23:07:42 -0400 | [diff] [blame] | 465 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 466 | self.ClassDef = 'InputClassDef' if Chain else 'ClassDef' |
Behdad Esfahbod | 2710839 | 2013-07-23 16:40:47 -0400 | [diff] [blame] | 467 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 468 | if self.Format not in [1, 2, 3]: |
| 469 | return None # Don't shoot the messenger; let it go |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 470 | if not hasattr(self.__class__, "__ContextHelpers"): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 471 | self.__class__.__ContextHelpers = {} |
| 472 | if self.Format not in self.__class__.__ContextHelpers: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 473 | helper = ContextHelper(self.__class__, self.Format) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 474 | self.__class__.__ContextHelpers[self.Format] = helper |
| 475 | return self.__class__.__ContextHelpers[self.Format] |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 476 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 477 | @__add_method(fontTools.ttLib.tables.otTables.ContextSubst, |
| 478 | fontTools.ttLib.tables.otTables.ChainContextSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 479 | def closure_glyphs(self, s, cur_glyphs=None): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 480 | if cur_glyphs == None: cur_glyphs = s.glyphs |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 481 | c = self.__classify_context() |
Behdad Esfahbod | 1ab2dbf | 2013-07-23 17:17:21 -0400 | [diff] [blame] | 482 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 483 | indices = c.Coverage(self).intersect(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 484 | if not indices: |
| 485 | return [] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 486 | cur_glyphs = c.Coverage(self).intersect_glyphs(s.glyphs); |
Behdad Esfahbod | 1d4fa13 | 2013-08-08 22:59:32 -0400 | [diff] [blame] | 487 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 488 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 489 | ContextData = c.ContextData(self) |
| 490 | rss = getattr(self, c.RuleSet) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 491 | for i in indices: |
| 492 | if not rss[i]: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 493 | for r in getattr(rss[i], c.Rule): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 494 | if not r: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 495 | if all(all(c.Intersect(s.glyphs, cd, k) for k in klist) |
| 496 | for cd,klist in zip(ContextData, c.RuleData(r))): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 497 | chaos = False |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 498 | for ll in getattr(r, c.LookupRecord): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 499 | if not ll: continue |
| 500 | seqi = ll.SequenceIndex |
| 501 | if seqi == 0: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 502 | pos_glyphs = set(c.Coverage(self).glyphs[i]) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 503 | else: |
| 504 | if chaos: |
| 505 | pos_glyphs = s.glyphs |
| 506 | else: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 507 | pos_glyphs = set(r.Input[seqi - 1]) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 508 | lookup = s.table.LookupList.Lookup[ll.LookupListIndex] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 509 | chaos = chaos or lookup.may_have_non_1to1() |
| 510 | lookup.closure_glyphs(s, cur_glyphs=pos_glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 511 | elif self.Format == 2: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 512 | ClassDef = getattr(self, c.ClassDef) |
| 513 | indices = ClassDef.intersect(cur_glyphs) |
| 514 | ContextData = c.ContextData(self) |
| 515 | rss = getattr(self, c.RuleSet) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 516 | for i in indices: |
| 517 | if not rss[i]: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 518 | for r in getattr(rss[i], c.Rule): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 519 | if not r: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 520 | if all(all(c.Intersect(s.glyphs, cd, k) for k in klist) |
| 521 | for cd,klist in zip(ContextData, c.RuleData(r))): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 522 | chaos = False |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 523 | for ll in getattr(r, c.LookupRecord): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 524 | if not ll: continue |
| 525 | seqi = ll.SequenceIndex |
| 526 | if seqi == 0: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 527 | pos_glyphs = ClassDef.intersect_class(cur_glyphs, i) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 528 | else: |
| 529 | if chaos: |
| 530 | pos_glyphs = s.glyphs |
| 531 | else: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 532 | pos_glyphs = ClassDef.intersect_class(s.glyphs, |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 533 | r.Input[seqi - 1]) |
| 534 | lookup = s.table.LookupList.Lookup[ll.LookupListIndex] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 535 | chaos = chaos or lookup.may_have_non_1to1() |
| 536 | lookup.closure_glyphs(s, cur_glyphs=pos_glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 537 | elif self.Format == 3: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 538 | if not all(x.intersect(s.glyphs) for x in c.RuleData(self)): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 539 | return [] |
| 540 | r = self |
| 541 | chaos = False |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 542 | for ll in getattr(r, c.LookupRecord): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 543 | if not ll: continue |
| 544 | seqi = ll.SequenceIndex |
| 545 | if seqi == 0: |
| 546 | pos_glyphs = cur_glyphs |
| 547 | else: |
| 548 | if chaos: |
| 549 | pos_glyphs = s.glyphs |
| 550 | else: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 551 | pos_glyphs = r.InputCoverage[seqi].intersect_glyphs(s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 552 | lookup = s.table.LookupList.Lookup[ll.LookupListIndex] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 553 | chaos = chaos or lookup.may_have_non_1to1() |
| 554 | lookup.closure_glyphs(s, cur_glyphs=pos_glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 555 | else: |
| 556 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 557 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 558 | @__add_method(fontTools.ttLib.tables.otTables.ContextSubst, |
| 559 | fontTools.ttLib.tables.otTables.ContextPos, |
| 560 | fontTools.ttLib.tables.otTables.ChainContextSubst, |
| 561 | fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 562 | def subset_glyphs(self, s): |
| 563 | c = self.__classify_context() |
Behdad Esfahbod | d8c7e10 | 2013-07-23 17:07:06 -0400 | [diff] [blame] | 564 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 565 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 566 | indices = self.Coverage.subset(s.glyphs) |
| 567 | rss = getattr(self, c.RuleSet) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 568 | rss = [rss[i] for i in indices] |
| 569 | for rs in rss: |
| 570 | if not rs: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 571 | ss = getattr(rs, c.Rule) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 572 | ss = [r for r in ss |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 573 | if r and all(all(g in s.glyphs for g in glist) |
| 574 | for glist in c.RuleData(r))] |
| 575 | setattr(rs, c.Rule, ss) |
| 576 | setattr(rs, c.RuleCount, len(ss)) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 577 | # Prune empty subrulesets |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 578 | rss = [rs for rs in rss if rs and getattr(rs, c.Rule)] |
| 579 | setattr(self, c.RuleSet, rss) |
| 580 | setattr(self, c.RuleSetCount, len(rss)) |
| 581 | return bool(rss) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 582 | elif self.Format == 2: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 583 | if not self.Coverage.subset(s.glyphs): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 584 | return False |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 585 | indices = getattr(self, c.ClassDef).subset(self.Coverage.glyphs, |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 586 | remap=False) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 587 | rss = getattr(self, c.RuleSet) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 588 | rss = [rss[i] for i in indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 589 | ContextData = c.ContextData(self) |
| 590 | klass_maps = [x.subset(s.glyphs, remap=True) for x in ContextData] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 591 | for rs in rss: |
| 592 | if not rs: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 593 | ss = getattr(rs, c.Rule) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 594 | ss = [r for r in ss |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 595 | if r and all(all(k in klass_map for k in klist) |
| 596 | for klass_map,klist in zip(klass_maps, c.RuleData(r)))] |
| 597 | setattr(rs, c.Rule, ss) |
| 598 | setattr(rs, c.RuleCount, len(ss)) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 599 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 600 | # Remap rule classes |
| 601 | for r in ss: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 602 | c.SetRuleData(r, [[klass_map.index(k) for k in klist] |
| 603 | for klass_map,klist in zip(klass_maps, c.RuleData(r))]) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 604 | # Prune empty subrulesets |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 605 | rss = [rs for rs in rss if rs and getattr(rs, c.Rule)] |
| 606 | setattr(self, c.RuleSet, rss) |
| 607 | setattr(self, c.RuleSetCount, len(rss)) |
| 608 | return bool(rss) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 609 | elif self.Format == 3: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 610 | return all(x.subset(s.glyphs) for x in c.RuleData(self)) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 611 | else: |
| 612 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 613 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 614 | @__add_method(fontTools.ttLib.tables.otTables.ContextSubst, |
| 615 | fontTools.ttLib.tables.otTables.ChainContextSubst, |
| 616 | fontTools.ttLib.tables.otTables.ContextPos, |
| 617 | fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 618 | def subset_lookups(self, lookup_indices): |
| 619 | c = self.__classify_context() |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 620 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 621 | if self.Format in [1, 2]: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 622 | for rs in getattr(self, c.RuleSet): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 623 | if not rs: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 624 | for r in getattr(rs, c.Rule): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 625 | if not r: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 626 | setattr(r, c.LookupRecord, |
| 627 | [ll for ll in getattr(r, c.LookupRecord) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 628 | if ll and ll.LookupListIndex in lookup_indices]) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 629 | for ll in getattr(r, c.LookupRecord): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 630 | if not ll: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 631 | ll.LookupListIndex = lookup_indices.index(ll.LookupListIndex) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 632 | elif self.Format == 3: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 633 | setattr(self, c.LookupRecord, |
| 634 | [ll for ll in getattr(self, c.LookupRecord) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 635 | if ll and ll.LookupListIndex in lookup_indices]) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 636 | for ll in getattr(self, c.LookupRecord): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 637 | if not ll: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 638 | ll.LookupListIndex = lookup_indices.index(ll.LookupListIndex) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 639 | else: |
| 640 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 641 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 642 | @__add_method(fontTools.ttLib.tables.otTables.ContextSubst, |
| 643 | fontTools.ttLib.tables.otTables.ChainContextSubst, |
| 644 | fontTools.ttLib.tables.otTables.ContextPos, |
| 645 | fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 646 | def collect_lookups(self): |
| 647 | c = self.__classify_context() |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 648 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 649 | if self.Format in [1, 2]: |
| 650 | return [ll.LookupListIndex |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 651 | for rs in getattr(self, c.RuleSet) if rs |
| 652 | for r in getattr(rs, c.Rule) if r |
| 653 | for ll in getattr(r, c.LookupRecord) if ll] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 654 | elif self.Format == 3: |
| 655 | return [ll.LookupListIndex |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 656 | for ll in getattr(self, c.LookupRecord) if ll] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 657 | else: |
| 658 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 659 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 660 | @__add_method(fontTools.ttLib.tables.otTables.ExtensionSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 661 | def closure_glyphs(self, s, cur_glyphs=None): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 662 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 663 | self.ExtSubTable.closure_glyphs(s, cur_glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 664 | else: |
| 665 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 666 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 667 | @__add_method(fontTools.ttLib.tables.otTables.ExtensionSubst) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 668 | def may_have_non_1to1(self): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 669 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 670 | return self.ExtSubTable.may_have_non_1to1() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 671 | else: |
| 672 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | aeacc15 | 2013-08-12 20:24:33 -0400 | [diff] [blame] | 673 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 674 | @__add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, |
| 675 | fontTools.ttLib.tables.otTables.ExtensionPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 676 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 677 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 678 | return self.ExtSubTable.subset_glyphs(s) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 679 | else: |
| 680 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 681 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 682 | @__add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, |
| 683 | fontTools.ttLib.tables.otTables.ExtensionPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 684 | def subset_lookups(self, lookup_indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 685 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 686 | return self.ExtSubTable.subset_lookups(lookup_indices) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 687 | else: |
| 688 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 689 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 690 | @__add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, |
| 691 | fontTools.ttLib.tables.otTables.ExtensionPos) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 692 | def collect_lookups(self): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 693 | if self.Format == 1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 694 | return self.ExtSubTable.collect_lookups() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 695 | else: |
| 696 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 697 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 698 | @__add_method(fontTools.ttLib.tables.otTables.Lookup) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 699 | def closure_glyphs(self, s, cur_glyphs=None): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 700 | for st in self.SubTable: |
| 701 | if not st: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 702 | st.closure_glyphs(s, cur_glyphs) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 703 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 704 | @__add_method(fontTools.ttLib.tables.otTables.Lookup) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 705 | def subset_glyphs(self, s): |
| 706 | self.SubTable = [st for st in self.SubTable if st and st.subset_glyphs(s)] |
| 707 | self.SubTableCount = len(self.SubTable) |
| 708 | return bool(self.SubTableCount) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 709 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 710 | @__add_method(fontTools.ttLib.tables.otTables.Lookup) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 711 | def subset_lookups(self, lookup_indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 712 | for s in self.SubTable: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 713 | s.subset_lookups(lookup_indices) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 714 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 715 | @__add_method(fontTools.ttLib.tables.otTables.Lookup) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 716 | def collect_lookups(self): |
| 717 | return unique_sorted(sum((st.collect_lookups() for st in self.SubTable |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 718 | if st), [])) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 719 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 720 | @__add_method(fontTools.ttLib.tables.otTables.Lookup) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 721 | def may_have_non_1to1(self): |
| 722 | return any(st.may_have_non_1to1() for st in self.SubTable if st) |
Behdad Esfahbod | aeacc15 | 2013-08-12 20:24:33 -0400 | [diff] [blame] | 723 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 724 | @__add_method(fontTools.ttLib.tables.otTables.LookupList) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 725 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 726 | "Returns the indices of nonempty lookups." |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 727 | return [i for(i,l) in enumerate(self.Lookup) if l and l.subset_glyphs(s)] |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 728 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 729 | @__add_method(fontTools.ttLib.tables.otTables.LookupList) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 730 | def subset_lookups(self, lookup_indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 731 | self.Lookup = [self.Lookup[i] for i in lookup_indices |
| 732 | if i < self.LookupCount] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 733 | self.LookupCount = len(self.Lookup) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 734 | for l in self.Lookup: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 735 | l.subset_lookups(lookup_indices) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 736 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 737 | @__add_method(fontTools.ttLib.tables.otTables.LookupList) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 738 | def closure_lookups(self, lookup_indices): |
| 739 | lookup_indices = unique_sorted(lookup_indices) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 740 | recurse = lookup_indices |
| 741 | while True: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 742 | recurse_lookups = sum((self.Lookup[i].collect_lookups() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 743 | for i in recurse if i < self.LookupCount), []) |
| 744 | recurse_lookups = [l for l in recurse_lookups |
| 745 | if l not in lookup_indices and l < self.LookupCount] |
| 746 | if not recurse_lookups: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 747 | return unique_sorted(lookup_indices) |
| 748 | recurse_lookups = unique_sorted(recurse_lookups) |
| 749 | lookup_indices.extend(recurse_lookups) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 750 | recurse = recurse_lookups |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 751 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 752 | @__add_method(fontTools.ttLib.tables.otTables.Feature) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 753 | def subset_lookups(self, lookup_indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 754 | self.LookupListIndex = [l for l in self.LookupListIndex |
| 755 | if l in lookup_indices] |
| 756 | # Now map them. |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 757 | self.LookupListIndex = [lookup_indices.index(l) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 758 | for l in self.LookupListIndex] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 759 | self.LookupCount = len(self.LookupListIndex) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 760 | return self.LookupCount |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 761 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 762 | @__add_method(fontTools.ttLib.tables.otTables.Feature) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 763 | def collect_lookups(self): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 764 | return self.LookupListIndex[:] |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 765 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 766 | @__add_method(fontTools.ttLib.tables.otTables.FeatureList) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 767 | def subset_lookups(self, lookup_indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 768 | "Returns the indices of nonempty features." |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 769 | feature_indices = [i for(i,f) in enumerate(self.FeatureRecord) |
| 770 | if f.Feature.subset_lookups(lookup_indices)] |
| 771 | self.subset_features(feature_indices) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 772 | return feature_indices |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 773 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 774 | @__add_method(fontTools.ttLib.tables.otTables.FeatureList) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 775 | def collect_lookups(self, feature_indices): |
| 776 | return unique_sorted(sum((self.FeatureRecord[i].Feature.collect_lookups() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 777 | for i in feature_indices |
| 778 | if i < self.FeatureCount), [])) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 779 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 780 | @__add_method(fontTools.ttLib.tables.otTables.FeatureList) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 781 | def subset_features(self, feature_indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 782 | self.FeatureRecord = [self.FeatureRecord[i] for i in feature_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 783 | self.FeatureCount = len(self.FeatureRecord) |
| 784 | return bool(self.FeatureCount) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 785 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 786 | @__add_method(fontTools.ttLib.tables.otTables.DefaultLangSys, |
| 787 | fontTools.ttLib.tables.otTables.LangSys) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 788 | def subset_features(self, feature_indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 789 | if self.ReqFeatureIndex in feature_indices: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 790 | self.ReqFeatureIndex = feature_indices.index(self.ReqFeatureIndex) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 791 | else: |
| 792 | self.ReqFeatureIndex = 65535 |
| 793 | self.FeatureIndex = [f for f in self.FeatureIndex if f in feature_indices] |
| 794 | # Now map them. |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 795 | self.FeatureIndex = [feature_indices.index(f) for f in self.FeatureIndex |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 796 | if f in feature_indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 797 | self.FeatureCount = len(self.FeatureIndex) |
| 798 | return bool(self.FeatureCount or self.ReqFeatureIndex != 65535) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 799 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 800 | @__add_method(fontTools.ttLib.tables.otTables.DefaultLangSys, |
| 801 | fontTools.ttLib.tables.otTables.LangSys) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 802 | def collect_features(self): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 803 | feature_indices = self.FeatureIndex[:] |
| 804 | if self.ReqFeatureIndex != 65535: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 805 | feature_indices.append(self.ReqFeatureIndex) |
| 806 | return unique_sorted(feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 807 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 808 | @__add_method(fontTools.ttLib.tables.otTables.Script) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 809 | def subset_features(self, feature_indices): |
| 810 | if(self.DefaultLangSys and |
| 811 | not self.DefaultLangSys.subset_features(feature_indices)): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 812 | self.DefaultLangSys = None |
| 813 | self.LangSysRecord = [l for l in self.LangSysRecord |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 814 | if l.LangSys.subset_features(feature_indices)] |
| 815 | self.LangSysCount = len(self.LangSysRecord) |
| 816 | return bool(self.LangSysCount or self.DefaultLangSys) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 817 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 818 | @__add_method(fontTools.ttLib.tables.otTables.Script) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 819 | def collect_features(self): |
| 820 | feature_indices = [l.LangSys.collect_features() for l in self.LangSysRecord] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 821 | if self.DefaultLangSys: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 822 | feature_indices.append(self.DefaultLangSys.collect_features()) |
| 823 | return unique_sorted(sum(feature_indices, [])) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 824 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 825 | @__add_method(fontTools.ttLib.tables.otTables.ScriptList) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 826 | def subset_features(self, feature_indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 827 | self.ScriptRecord = [s for s in self.ScriptRecord |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 828 | if s.Script.subset_features(feature_indices)] |
| 829 | self.ScriptCount = len(self.ScriptRecord) |
| 830 | return bool(self.ScriptCount) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 831 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 832 | @__add_method(fontTools.ttLib.tables.otTables.ScriptList) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 833 | def collect_features(self): |
| 834 | return unique_sorted(sum((s.Script.collect_features() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 835 | for s in self.ScriptRecord), [])) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 836 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 837 | @__add_method(fontTools.ttLib.getTableClass('GSUB')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 838 | def closure_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 839 | s.table = self.table |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 840 | feature_indices = self.table.ScriptList.collect_features() |
| 841 | lookup_indices = self.table.FeatureList.collect_lookups(feature_indices) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 842 | while True: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 843 | orig_glyphs = s.glyphs.copy() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 844 | for i in lookup_indices: |
| 845 | if i >= self.table.LookupList.LookupCount: continue |
| 846 | if not self.table.LookupList.Lookup[i]: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 847 | self.table.LookupList.Lookup[i].closure_glyphs(s) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 848 | if orig_glyphs == s.glyphs: |
| 849 | break |
| 850 | del s.table |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 851 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 852 | @__add_method(fontTools.ttLib.getTableClass('GSUB'), |
| 853 | fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 854 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 855 | s.glyphs = s.glyphs_gsubed |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 856 | lookup_indices = self.table.LookupList.subset_glyphs(s) |
| 857 | self.subset_lookups(lookup_indices) |
| 858 | self.prune_lookups() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 859 | return True |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 860 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 861 | @__add_method(fontTools.ttLib.getTableClass('GSUB'), |
| 862 | fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 863 | def subset_lookups(self, lookup_indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 864 | """Retrains specified lookups, then removes empty features, language |
| 865 | systems, and scripts.""" |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 866 | self.table.LookupList.subset_lookups(lookup_indices) |
| 867 | feature_indices = self.table.FeatureList.subset_lookups(lookup_indices) |
| 868 | self.table.ScriptList.subset_features(feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 869 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 870 | @__add_method(fontTools.ttLib.getTableClass('GSUB'), |
| 871 | fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 872 | def prune_lookups(self): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 873 | "Remove unreferenced lookups" |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 874 | feature_indices = self.table.ScriptList.collect_features() |
| 875 | lookup_indices = self.table.FeatureList.collect_lookups(feature_indices) |
| 876 | lookup_indices = self.table.LookupList.closure_lookups(lookup_indices) |
| 877 | self.subset_lookups(lookup_indices) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 878 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 879 | @__add_method(fontTools.ttLib.getTableClass('GSUB'), |
| 880 | fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 881 | def subset_feature_tags(self, feature_tags): |
| 882 | feature_indices = [i for(i,f) in |
| 883 | enumerate(self.table.FeatureList.FeatureRecord) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 884 | if f.FeatureTag in feature_tags] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 885 | self.table.FeatureList.subset_features(feature_indices) |
| 886 | self.table.ScriptList.subset_features(feature_indices) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 887 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 888 | @__add_method(fontTools.ttLib.getTableClass('GSUB'), |
| 889 | fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 890 | def prune_pre_subset(self, options): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 891 | if options.layout_features and '*' not in options.layout_features: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 892 | self.subset_feature_tags(options.layout_features) |
| 893 | self.prune_lookups() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 894 | return True |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 895 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 896 | @__add_method(fontTools.ttLib.getTableClass('GDEF')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 897 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 898 | glyphs = s.glyphs_gsubed |
| 899 | table = self.table |
| 900 | if table.LigCaretList: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 901 | indices = table.LigCaretList.Coverage.subset(glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 902 | table.LigCaretList.LigGlyph = [table.LigCaretList.LigGlyph[i] |
| 903 | for i in indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 904 | table.LigCaretList.LigGlyphCount = len(table.LigCaretList.LigGlyph) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 905 | if not table.LigCaretList.LigGlyphCount: |
| 906 | table.LigCaretList = None |
| 907 | if table.MarkAttachClassDef: |
| 908 | table.MarkAttachClassDef.classDefs = {g:v for g,v in |
| 909 | table.MarkAttachClassDef.classDefs.iteritems() |
| 910 | if g in glyphs} |
| 911 | if not table.MarkAttachClassDef.classDefs: |
| 912 | table.MarkAttachClassDef = None |
| 913 | if table.GlyphClassDef: |
| 914 | table.GlyphClassDef.classDefs = {g:v for g,v in |
| 915 | table.GlyphClassDef.classDefs.iteritems() |
| 916 | if g in glyphs} |
| 917 | if not table.GlyphClassDef.classDefs: |
| 918 | table.GlyphClassDef = None |
| 919 | if table.AttachList: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 920 | indices = table.AttachList.Coverage.subset(glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 921 | table.AttachList.AttachPoint = [table.AttachList.AttachPoint[i] |
| 922 | for i in indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 923 | table.AttachList.GlyphCount = len(table.AttachList.AttachPoint) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 924 | if not table.AttachList.GlyphCount: |
| 925 | table.AttachList = None |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 926 | return bool(table.LigCaretList or |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 927 | table.MarkAttachClassDef or |
| 928 | table.GlyphClassDef or |
| 929 | table.AttachList) |
Behdad Esfahbod | efb984a | 2013-07-21 22:26:16 -0400 | [diff] [blame] | 930 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 931 | @__add_method(fontTools.ttLib.getTableClass('kern')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 932 | def prune_pre_subset(self, options): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 933 | # Prune unknown kern table types |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 934 | self.kernTables = [t for t in self.kernTables if hasattr(t, 'kernTable')] |
| 935 | return bool(self.kernTables) |
Behdad Esfahbod | d4e33a7 | 2013-07-24 18:51:05 -0400 | [diff] [blame] | 936 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 937 | @__add_method(fontTools.ttLib.getTableClass('kern')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 938 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 939 | glyphs = s.glyphs_gsubed |
| 940 | for t in self.kernTables: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 941 | t.kernTable = {(a,b):v for((a,b),v) in t.kernTable.iteritems() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 942 | if a in glyphs and b in glyphs} |
| 943 | self.kernTables = [t for t in self.kernTables if t.kernTable] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 944 | return bool(self.kernTables) |
Behdad Esfahbod | efb984a | 2013-07-21 22:26:16 -0400 | [diff] [blame] | 945 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 946 | @__add_method(fontTools.ttLib.getTableClass('hmtx'), |
| 947 | fontTools.ttLib.getTableClass('vmtx')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 948 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 949 | self.metrics = {g:v for g,v in self.metrics.iteritems() if g in s.glyphs} |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 950 | return bool(self.metrics) |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 951 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 952 | @__add_method(fontTools.ttLib.getTableClass('hdmx')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 953 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 954 | self.hdmx = {sz:{g:v for g,v in l.iteritems() if g in s.glyphs} |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 955 | for(sz,l) in self.hdmx.iteritems()} |
| 956 | return bool(self.hdmx) |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 957 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 958 | @__add_method(fontTools.ttLib.getTableClass('VORG')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 959 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 960 | self.VOriginRecords = {g:v for g,v in self.VOriginRecords.iteritems() |
| 961 | if g in s.glyphs} |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 962 | self.numVertOriginYMetrics = len(self.VOriginRecords) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 963 | return True # Never drop; has default metrics |
Behdad Esfahbod | e45d6af | 2013-07-22 15:29:17 -0400 | [diff] [blame] | 964 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 965 | @__add_method(fontTools.ttLib.getTableClass('post')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 966 | def prune_pre_subset(self, options): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 967 | if not options.glyph_names: |
| 968 | self.formatType = 3.0 |
| 969 | return True |
Behdad Esfahbod | 4264824 | 2013-07-23 12:56:06 -0400 | [diff] [blame] | 970 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 971 | @__add_method(fontTools.ttLib.getTableClass('post')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 972 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 973 | self.extraNames = [] # This seems to do it |
| 974 | return True |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 975 | |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 976 | # Copied from _g_l_y_f.py |
| 977 | ARG_1_AND_2_ARE_WORDS = 0x0001 # if set args are words otherwise they are bytes |
| 978 | ARGS_ARE_XY_VALUES = 0x0002 # if set args are xy values, otherwise they are points |
| 979 | ROUND_XY_TO_GRID = 0x0004 # for the xy values if above is true |
| 980 | WE_HAVE_A_SCALE = 0x0008 # Sx = Sy, otherwise scale == 1.0 |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 981 | NON_OVERLAPPING = 0x0010 # set to same value for all components(obsolete!) |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 982 | MORE_COMPONENTS = 0x0020 # indicates at least one more glyph after this one |
| 983 | WE_HAVE_AN_X_AND_Y_SCALE = 0x0040 # Sx, Sy |
| 984 | WE_HAVE_A_TWO_BY_TWO = 0x0080 # t00, t01, t10, t11 |
| 985 | WE_HAVE_INSTRUCTIONS = 0x0100 # instructions follow |
| 986 | USE_MY_METRICS = 0x0200 # apply these metrics to parent glyph |
| 987 | OVERLAP_COMPOUND = 0x0400 # used by Apple in GX fonts |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 988 | SCALED_COMPONENT_OFFSET = 0x0800 # composite designed to have the component offset scaled(designed for Apple) |
| 989 | UNSCALED_COMPONENT_OFFSET = 0x1000 # composite designed not to have the component offset scaled(designed for MS) |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 990 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 991 | @__add_method(fontTools.ttLib.getTableModule('glyf').Glyph) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 992 | def getComponentNamesFast(self, glyfTable): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 993 | if struct.unpack(">h", self.data[:2])[0] >= 0: |
| 994 | return [] # Not composite |
| 995 | data = self.data |
| 996 | i = 10 |
| 997 | components = [] |
| 998 | more = 1 |
| 999 | while more: |
| 1000 | flags, glyphID = struct.unpack(">HH", data[i:i+4]) |
| 1001 | i += 4 |
| 1002 | flags = int(flags) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1003 | components.append(glyfTable.getGlyphName(int(glyphID))) |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 1004 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1005 | if flags & ARG_1_AND_2_ARE_WORDS: i += 4 |
| 1006 | else: i += 2 |
| 1007 | if flags & WE_HAVE_A_SCALE: i += 2 |
| 1008 | elif flags & WE_HAVE_AN_X_AND_Y_SCALE: i += 4 |
| 1009 | elif flags & WE_HAVE_A_TWO_BY_TWO: i += 8 |
| 1010 | more = flags & MORE_COMPONENTS |
| 1011 | return components |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 1012 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1013 | @__add_method(fontTools.ttLib.getTableModule('glyf').Glyph) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1014 | def remapComponentsFast(self, indices): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1015 | if struct.unpack(">h", self.data[:2])[0] >= 0: |
| 1016 | return # Not composite |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1017 | data = bytearray(self.data) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1018 | i = 10 |
| 1019 | more = 1 |
| 1020 | while more: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1021 | flags =(data[i] << 8) | data[i+1] |
| 1022 | glyphID =(data[i+2] << 8) | data[i+3] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1023 | # Remap |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1024 | glyphID = indices.index(glyphID) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1025 | data[i+2] = glyphID >> 8 |
| 1026 | data[i+3] = glyphID & 0xFF |
| 1027 | i += 4 |
| 1028 | flags = int(flags) |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 1029 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1030 | if flags & ARG_1_AND_2_ARE_WORDS: i += 4 |
| 1031 | else: i += 2 |
| 1032 | if flags & WE_HAVE_A_SCALE: i += 2 |
| 1033 | elif flags & WE_HAVE_AN_X_AND_Y_SCALE: i += 4 |
| 1034 | elif flags & WE_HAVE_A_TWO_BY_TWO: i += 8 |
| 1035 | more = flags & MORE_COMPONENTS |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1036 | self.data = str(data) |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 1037 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1038 | @__add_method(fontTools.ttLib.getTableModule('glyf').Glyph) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1039 | def dropInstructionsFast(self): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1040 | numContours = struct.unpack(">h", self.data[:2])[0] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1041 | data = bytearray(self.data) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1042 | i = 10 |
| 1043 | if numContours >= 0: |
| 1044 | i += 2 * numContours # endPtsOfContours |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1045 | instructionLen =(data[i] << 8) | data[i+1] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1046 | # Zero it |
| 1047 | data[i] = data [i+1] = 0 |
| 1048 | i += 2 |
| 1049 | if instructionLen: |
| 1050 | # Splice it out |
| 1051 | data = data[:i] + data[i+instructionLen:] |
| 1052 | else: |
| 1053 | more = 1 |
| 1054 | while more: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1055 | flags =(data[i] << 8) | data[i+1] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1056 | # Turn instruction flag off |
| 1057 | flags &= ~WE_HAVE_INSTRUCTIONS |
| 1058 | data[i+0] = flags >> 8 |
| 1059 | data[i+1] = flags & 0xFF |
| 1060 | i += 4 |
| 1061 | flags = int(flags) |
Behdad Esfahbod | 6ec8854 | 2013-07-24 16:52:47 -0400 | [diff] [blame] | 1062 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1063 | if flags & ARG_1_AND_2_ARE_WORDS: i += 4 |
| 1064 | else: i += 2 |
| 1065 | if flags & WE_HAVE_A_SCALE: i += 2 |
| 1066 | elif flags & WE_HAVE_AN_X_AND_Y_SCALE: i += 4 |
| 1067 | elif flags & WE_HAVE_A_TWO_BY_TWO: i += 8 |
| 1068 | more = flags & MORE_COMPONENTS |
| 1069 | # Cut off |
| 1070 | data = data[:i] |
| 1071 | if len(data) % 4: |
| 1072 | # add pad bytes |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1073 | nPadBytes = 4 -(len(data) % 4) |
| 1074 | for i in range(nPadBytes): |
| 1075 | data.append(0) |
| 1076 | self.data = str(data) |
Behdad Esfahbod | 6ec8854 | 2013-07-24 16:52:47 -0400 | [diff] [blame] | 1077 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1078 | @__add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1079 | def closure_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1080 | decompose = s.glyphs |
| 1081 | # I don't know if component glyphs can be composite themselves. |
| 1082 | # We handle them anyway. |
| 1083 | while True: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1084 | components = set() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1085 | for g in decompose: |
| 1086 | if g not in self.glyphs: |
| 1087 | continue |
| 1088 | gl = self.glyphs[g] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1089 | if hasattr(gl, "data"): |
| 1090 | for c in gl.getComponentNamesFast(self): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1091 | if c not in s.glyphs: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1092 | components.add(c) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1093 | else: |
| 1094 | # TTX seems to expand gid0..3 always |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1095 | if gl.isComposite(): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1096 | for c in gl.components: |
| 1097 | if c.glyphName not in s.glyphs: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1098 | components.add(c.glyphName) |
| 1099 | components = set(c for c in components if c not in s.glyphs) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1100 | if not components: |
| 1101 | break |
| 1102 | decompose = components |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1103 | s.glyphs.update(components) |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 1104 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1105 | @__add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1106 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1107 | self.glyphs = {g:v for g,v in self.glyphs.iteritems() if g in s.glyphs} |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1108 | indices = [i for i,g in enumerate(self.glyphOrder) if g in s.glyphs] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1109 | for v in self.glyphs.itervalues(): |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1110 | if hasattr(v, "data"): |
| 1111 | v.remapComponentsFast(indices) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1112 | else: |
| 1113 | pass # No need |
| 1114 | self.glyphOrder = [g for g in self.glyphOrder if g in s.glyphs] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1115 | return bool(self.glyphs) |
Behdad Esfahbod | 861d915 | 2013-07-22 16:47:24 -0400 | [diff] [blame] | 1116 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1117 | @__add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1118 | def prune_post_subset(self, options): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1119 | if not options.hinting: |
| 1120 | for v in self.glyphs.itervalues(): |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1121 | if hasattr(v, "data"): |
| 1122 | v.dropInstructionsFast() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1123 | else: |
| 1124 | v.program = fontTools.ttLib.tables.ttProgram.Program() |
| 1125 | v.program.fromBytecode([]) |
| 1126 | return True |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 1127 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1128 | @__add_method(fontTools.ttLib.getTableClass('CFF ')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1129 | def prune_pre_subset(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1130 | cff = self.cff |
| 1131 | # CFF table should have one font only |
| 1132 | cff.fontNames = cff.fontNames[:1] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1133 | return bool(cff.fontNames) |
Behdad Esfahbod | 1a4e72e | 2013-08-13 15:46:37 -0400 | [diff] [blame] | 1134 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1135 | @__add_method(fontTools.ttLib.getTableClass('CFF ')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1136 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1137 | cff = self.cff |
| 1138 | for fontname in cff.keys(): |
| 1139 | font = cff[fontname] |
| 1140 | cs = font.CharStrings |
| 1141 | if cs.charStringsAreIndexed: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1142 | indices = [i for i,g in enumerate(font.charset) if g in s.glyphs] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1143 | # Load all glyphs |
| 1144 | for g in font.charset: |
| 1145 | if g not in s.glyphs: continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1146 | cs.getItemAndSelector(g) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1147 | csi = cs.charStringsIndex |
| 1148 | csi.items = [csi.items[i] for i in indices] |
| 1149 | csi.offsets = [] # Don't need it; loaded all glyphs |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1150 | if hasattr(font, "FDSelect"): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1151 | sel = font.FDSelect |
| 1152 | sel.format = None |
| 1153 | sel.gidArray = [font.FDSelect.gidArray[i] for i in indices] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1154 | cs.charStrings = {g:indices.index(v) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1155 | for g,v in cs.charStrings.iteritems() |
| 1156 | if g in s.glyphs} |
| 1157 | else: |
| 1158 | cs.charStrings = {g:v |
| 1159 | for g,v in cs.charStrings.iteritems() |
| 1160 | if g in s.glyphs} |
| 1161 | font.charset = [g for g in font.charset if g in s.glyphs] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1162 | font.numGlyphs = len(font.charset) |
| 1163 | return any(cff[fontname].numGlyphs for fontname in cff.keys()) |
Behdad Esfahbod | 1a4e72e | 2013-08-13 15:46:37 -0400 | [diff] [blame] | 1164 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1165 | @__add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1166 | def prune_post_subset(self, options): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1167 | if not options.hinting: |
| 1168 | pass # Drop hints |
| 1169 | return True |
Behdad Esfahbod | 2b677c8 | 2013-07-23 13:37:13 -0400 | [diff] [blame] | 1170 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1171 | @__add_method(fontTools.ttLib.getTableClass('cmap')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1172 | def closure_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1173 | tables = [t for t in self.tables |
| 1174 | if t.platformID == 3 and t.platEncID in [1, 10]] |
| 1175 | for u in s.unicodes_requested: |
| 1176 | found = False |
| 1177 | for table in tables: |
| 1178 | if u in table.cmap: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1179 | s.glyphs.add(table.cmap[u]) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1180 | found = True |
| 1181 | break |
| 1182 | if not found: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1183 | s.log("No glyph for Unicode value %s; skipping." % u) |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1184 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1185 | @__add_method(fontTools.ttLib.getTableClass('cmap')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1186 | def prune_pre_subset(self, options): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1187 | if not options.legacy_cmap: |
| 1188 | # Drop non-Unicode / non-Symbol cmaps |
| 1189 | self.tables = [t for t in self.tables |
| 1190 | if t.platformID == 3 and t.platEncID in [0, 1, 10]] |
| 1191 | if not options.symbol_cmap: |
| 1192 | self.tables = [t for t in self.tables |
| 1193 | if t.platformID == 3 and t.platEncID in [1, 10]] |
| 1194 | # TODO Only keep one subtable? |
| 1195 | # For now, drop format=0 which can't be subset_glyphs easily? |
| 1196 | self.tables = [t for t in self.tables if t.format != 0] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1197 | return bool(self.tables) |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 1198 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1199 | @__add_method(fontTools.ttLib.getTableClass('cmap')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1200 | def subset_glyphs(self, s): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1201 | s.glyphs = s.glyphs_cmaped |
| 1202 | for t in self.tables: |
| 1203 | # For reasons I don't understand I need this here |
| 1204 | # to force decompilation of the cmap format 14. |
| 1205 | try: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1206 | getattr(t, "asdf") |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1207 | except AttributeError: |
| 1208 | pass |
| 1209 | if t.format == 14: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1210 | # XXX We drop all the default-UVS mappings(g==None) |
| 1211 | t.uvsDict = {v:[(u,g) for(u,g) in l if g in s.glyphs] |
| 1212 | for(v,l) in t.uvsDict.iteritems()} |
| 1213 | t.uvsDict = {v:l for(v,l) in t.uvsDict.iteritems() if l} |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1214 | else: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1215 | t.cmap = {u:g for(u,g) in t.cmap.iteritems() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1216 | if g in s.glyphs_requested or u in s.unicodes_requested} |
| 1217 | self.tables = [t for t in self.tables |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1218 | if(t.cmap if t.format != 14 else t.uvsDict)] |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1219 | # XXX Convert formats when needed |
| 1220 | # In particular, if we have a format=12 without non-BMP |
| 1221 | # characters, either drop format=12 one or convert it |
| 1222 | # to format=4 if there's not one. |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1223 | return bool(self.tables) |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 1224 | |
Behdad Esfahbod | 616d36e | 2013-08-13 20:02:59 -0400 | [diff] [blame^] | 1225 | @__add_method(fontTools.ttLib.getTableClass('name')) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1226 | def prune_pre_subset(self, options): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1227 | if '*' not in options.name_IDs: |
| 1228 | self.names = [n for n in self.names if n.nameID in options.name_IDs] |
| 1229 | if not options.name_legacy: |
| 1230 | self.names = [n for n in self.names |
| 1231 | if n.platformID == 3 and n.platEncID == 1] |
| 1232 | if '*' not in options.name_languages: |
| 1233 | self.names = [n for n in self.names if n.langID in options.name_languages] |
| 1234 | return True # Retain even if empty |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 1235 | |
Behdad Esfahbod | 8c646f6 | 2013-07-22 15:06:23 -0400 | [diff] [blame] | 1236 | |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 1237 | # TODO OS/2 ulUnicodeRange / ulCodePageRange? |
Behdad Esfahbod | f71267b | 2013-07-23 12:59:13 -0400 | [diff] [blame] | 1238 | # TODO Drop unneeded GSUB/GPOS Script/LangSys entries |
Behdad Esfahbod | 398d389 | 2013-07-23 15:29:40 -0400 | [diff] [blame] | 1239 | # TODO Avoid recursing too much |
Behdad Esfahbod | e94aa0e | 2013-07-23 13:22:04 -0400 | [diff] [blame] | 1240 | # TODO Text direction considerations |
| 1241 | # TODO Text script / language considerations |
Behdad Esfahbod | b3ee60c | 2013-07-24 19:21:40 -0400 | [diff] [blame] | 1242 | # TODO Drop unknown tables? Using DefaultTable.prune? |
Behdad Esfahbod | 8c4f7cc | 2013-07-24 17:58:29 -0400 | [diff] [blame] | 1243 | # TODO Drop GPOS Device records if not hinting? |
Behdad Esfahbod | 93e2636 | 2013-08-09 14:22:48 -0400 | [diff] [blame] | 1244 | # TODO Move font name loading hack to Subsetter? |
Behdad Esfahbod | 56ebd04 | 2013-07-22 13:02:24 -0400 | [diff] [blame] | 1245 | |
Behdad Esfahbod | 8c486d8 | 2013-07-24 13:34:47 -0400 | [diff] [blame] | 1246 | |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 1247 | class Subsetter: |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1248 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1249 | class Options: |
Behdad Esfahbod | 26d9ee7 | 2013-08-13 16:55:01 -0400 | [diff] [blame] | 1250 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1251 | class UnknownOptionError(Exception): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1252 | pass |
Behdad Esfahbod | 26d9ee7 | 2013-08-13 16:55:01 -0400 | [diff] [blame] | 1253 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1254 | drop_tables_default = ['BASE', 'JSTF', 'DSIG', 'EBDT', 'EBLC', 'EBSC', |
| 1255 | 'PCLT', 'LTSH'] |
| 1256 | drop_tables_default += ['Feat', 'Glat', 'Gloc', 'Silf', 'Sill'] # Graphite |
| 1257 | drop_tables_default += ['CBLC', 'CBDT', 'sbix', 'COLR', 'CPAL'] # Color |
| 1258 | no_subset_tables_default = ['gasp', 'head', 'hhea', 'maxp', 'vhea', 'OS/2', |
| 1259 | 'loca', 'name', 'cvt ', 'fpgm', 'prep'] |
| 1260 | hinting_tables_default = ['cvt ', 'fpgm', 'prep', 'hdmx', 'VDMX'] |
Behdad Esfahbod | 9eeeb4e | 2013-08-13 16:58:50 -0400 | [diff] [blame] | 1261 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1262 | # Based on HarfBuzz shapers |
| 1263 | layout_features_groups = { |
| 1264 | # Default shaper |
Behdad Esfahbod | e9f0b15 | 2013-08-13 19:54:25 -0400 | [diff] [blame] | 1265 | 'common': ['ccmp', 'liga', 'locl', 'mark', 'mkmk', 'rlig'], |
| 1266 | 'horizontal': ['calt', 'clig', 'curs', 'kern', 'rclt'], |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1267 | 'vertical': ['valt', 'vert', 'vkrn', 'vpal', 'vrt2'], |
Behdad Esfahbod | e9f0b15 | 2013-08-13 19:54:25 -0400 | [diff] [blame] | 1268 | 'ltr': ['ltra', 'ltrm'], |
| 1269 | 'rtl': ['rtla', 'rtlm'], |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1270 | # Complex shapers |
Behdad Esfahbod | e9f0b15 | 2013-08-13 19:54:25 -0400 | [diff] [blame] | 1271 | 'arabic': ['init', 'medi', 'fina', 'isol', 'med2', 'fin2', 'fin3', |
| 1272 | 'cswh', 'mset'], |
| 1273 | 'hangul': ['ljmo', 'vjmo', 'tjmo'], |
| 1274 | 'tibetal': ['abvs', 'blws', 'abvm', 'blwm'], |
| 1275 | 'indic': ['nukt', 'akhn', 'rphf', 'rkrf', 'pref', 'blwf', 'half', |
| 1276 | 'abvf', 'pstf', 'cfar', 'vatu', 'cjct', 'init', 'pres', |
| 1277 | 'abvs', 'blws', 'psts', 'haln', 'dist', 'abvm', 'blwm'], |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1278 | } |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1279 | layout_features_default = unique_sorted(sum( |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1280 | layout_features_groups.itervalues(), [])) |
Behdad Esfahbod | 9eeeb4e | 2013-08-13 16:58:50 -0400 | [diff] [blame] | 1281 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1282 | drop_tables = drop_tables_default |
| 1283 | no_subset_tables = no_subset_tables_default |
| 1284 | hinting_tables = hinting_tables_default |
| 1285 | layout_features = layout_features_default |
| 1286 | hinting = False |
| 1287 | glyph_names = False |
| 1288 | legacy_cmap = False |
| 1289 | symbol_cmap = False |
| 1290 | name_IDs = [1, 2] # Family and Style |
| 1291 | name_legacy = False |
| 1292 | name_languages = [0x0409] # English |
| 1293 | mandatory_glyphs = True # First four for TrueType, .notdef for CFF |
| 1294 | recalc_bboxes = False # Slows us down |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1295 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1296 | def __init__(self, **kwargs): |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1297 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1298 | self.set(**kwargs) |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1299 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1300 | def set(self, **kwargs): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1301 | for k,v in kwargs.iteritems(): |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1302 | if not hasattr(self, k): |
| 1303 | raise self.UnknownOptionError("Unknown option '%s'" % k) |
| 1304 | setattr(self, k, v) |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1305 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1306 | def parse_opts(self, argv, ignore_unknown=False): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1307 | ret = [] |
| 1308 | opts = {} |
| 1309 | for a in argv: |
| 1310 | orig_a = a |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1311 | if not a.startswith('--'): |
| 1312 | ret.append(a) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1313 | continue |
| 1314 | a = a[2:] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1315 | i = a.find('=') |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1316 | if i == -1: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1317 | if a.startswith("no-"): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1318 | k = a[3:] |
| 1319 | v = False |
| 1320 | else: |
| 1321 | k = a |
| 1322 | v = True |
| 1323 | else: |
| 1324 | k = a[:i] |
| 1325 | v = a[i+1:] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1326 | k = k.replace('-', '_') |
| 1327 | if not hasattr(self, k): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1328 | if ignore_unknown == True or k in ignore_unknown: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1329 | ret.append(orig_a) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1330 | continue |
| 1331 | else: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1332 | raise self.UnknownOptionError("Unknown option '%s'" % a) |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1333 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1334 | ov = getattr(self, k) |
| 1335 | if isinstance(ov, bool): |
| 1336 | v = bool(v) |
| 1337 | elif isinstance(ov, int): |
| 1338 | v = int(v) |
| 1339 | elif isinstance(ov, list): |
| 1340 | v = v.split(',') |
| 1341 | v = [int(x, 0) if x[0] in range(10) else x for x in v] |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1342 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1343 | opts[k] = v |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1344 | self.set(**opts) |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1345 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1346 | return ret |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1347 | |
| 1348 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1349 | def __init__(self, options=None, log=None): |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1350 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1351 | if not log: |
| 1352 | log = Logger() |
| 1353 | if not options: |
| 1354 | options = Options() |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1355 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1356 | self.options = options |
| 1357 | self.log = log |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1358 | self.unicodes_requested = set() |
| 1359 | self.glyphs_requested = set() |
| 1360 | self.glyphs = set() |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 1361 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1362 | def populate(self, glyphs=[], unicodes=[], text=""): |
| 1363 | self.unicodes_requested.update(unicodes) |
| 1364 | if isinstance(text, str): |
| 1365 | text = text.decode("utf8") |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1366 | for u in text: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1367 | self.unicodes_requested.add(ord(u)) |
| 1368 | self.glyphs_requested.update(glyphs) |
| 1369 | self.glyphs.update(glyphs) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 1370 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1371 | def pre_prune(self, font): |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1372 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1373 | for tag in font.keys(): |
| 1374 | if tag == 'GlyphOrder': continue |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1375 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1376 | if(tag in self.options.drop_tables or |
| 1377 | (tag in self.options.hinting_tables and not self.options.hinting)): |
| 1378 | self.log(tag, "dropped") |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1379 | del font[tag] |
| 1380 | continue |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1381 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1382 | clazz = fontTools.ttLib.getTableClass(tag) |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1383 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1384 | if hasattr(clazz, 'prune_pre_subset'): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1385 | table = font[tag] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1386 | retain = table.prune_pre_subset(self.options) |
| 1387 | self.log.lapse("prune '%s'" % tag) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1388 | if not retain: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1389 | self.log(tag, "pruned to empty; dropped") |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1390 | del font[tag] |
| 1391 | continue |
| 1392 | else: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1393 | self.log(tag, "pruned") |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1394 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1395 | def closure_glyphs(self, font): |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1396 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1397 | self.glyphs = self.glyphs_requested.copy() |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1398 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1399 | if 'cmap' in font: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1400 | font['cmap'].closure_glyphs(self) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1401 | self.glyphs_cmaped = self.glyphs |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1402 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1403 | if self.options.mandatory_glyphs: |
| 1404 | if 'glyf' in font: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1405 | for i in range(4): |
| 1406 | self.glyphs.add(font.getGlyphName(i)) |
| 1407 | self.log("Added first four glyphs to subset") |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1408 | else: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1409 | self.glyphs.add('.notdef') |
| 1410 | self.log("Added .notdef glyph to subset") |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1411 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1412 | if 'GSUB' in font: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1413 | self.log("Closing glyph list over 'GSUB': %d glyphs before" % |
| 1414 | len(self.glyphs)) |
| 1415 | self.log.glyphs(self.glyphs, font=font) |
| 1416 | font['GSUB'].closure_glyphs(self) |
| 1417 | self.log("Closed glyph list over 'GSUB': %d glyphs after" % |
| 1418 | len(self.glyphs)) |
| 1419 | self.log.glyphs(self.glyphs, font=font) |
| 1420 | self.log.lapse("close glyph list over 'GSUB'") |
| 1421 | self.glyphs_gsubed = self.glyphs.copy() |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1422 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1423 | if 'glyf' in font: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1424 | self.log("Closing glyph list over 'glyf': %d glyphs before" % |
| 1425 | len(self.glyphs)) |
| 1426 | self.log.glyphs(self.glyphs, font=font) |
| 1427 | font['glyf'].closure_glyphs(self) |
| 1428 | self.log("Closed glyph list over 'glyf': %d glyphs after" % |
| 1429 | len(self.glyphs)) |
| 1430 | self.log.glyphs(self.glyphs, font=font) |
| 1431 | self.log.lapse("close glyph list over 'glyf'") |
| 1432 | self.glyphs_glyfed = self.glyphs.copy() |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1433 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1434 | self.glyphs_all = self.glyphs.copy() |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1435 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1436 | self.log("Retaining %d glyphs: " % len(self.glyphs_all)) |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1437 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1438 | def subset_glyphs(self, font): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1439 | for tag in font.keys(): |
| 1440 | if tag == 'GlyphOrder': continue |
| 1441 | clazz = fontTools.ttLib.getTableClass(tag) |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1442 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1443 | if tag in self.options.no_subset_tables: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1444 | self.log(tag, "subsetting not needed") |
| 1445 | elif hasattr(clazz, 'subset_glyphs'): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1446 | table = font[tag] |
| 1447 | self.glyphs = self.glyphs_all |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1448 | retain = table.subset_glyphs(self) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1449 | self.glyphs = self.glyphs_all |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1450 | self.log.lapse("subset '%s'" % tag) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1451 | if not retain: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1452 | self.log(tag, "subsetted to empty; dropped") |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1453 | del font[tag] |
| 1454 | else: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1455 | self.log(tag, "subsetted") |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1456 | else: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1457 | self.log(tag, "NOT subset; don't know how to subset; dropped") |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1458 | del font[tag] |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1459 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1460 | glyphOrder = font.getGlyphOrder() |
| 1461 | glyphOrder = [g for g in glyphOrder if g in self.glyphs_all] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1462 | font.setGlyphOrder(glyphOrder) |
| 1463 | font._buildReverseGlyphOrderDict() |
| 1464 | self.log.lapse("subset GlyphOrder") |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1465 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1466 | def post_prune(self, font): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1467 | for tag in font.keys(): |
| 1468 | if tag == 'GlyphOrder': continue |
| 1469 | clazz = fontTools.ttLib.getTableClass(tag) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1470 | if hasattr(clazz, 'prune_post_subset'): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1471 | table = font[tag] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1472 | retain = table.prune_post_subset(self.options) |
| 1473 | self.log.lapse("prune '%s'" % tag) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1474 | if not retain: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1475 | self.log(tag, "pruned to empty; dropped") |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1476 | del font[tag] |
| 1477 | else: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1478 | self.log(tag, "pruned") |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1479 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1480 | def subset(self, font): |
Behdad Esfahbod | 756af49 | 2013-08-01 12:05:26 -0400 | [diff] [blame] | 1481 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1482 | font.recalcBBoxes = self.options.recalc_bboxes |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1483 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1484 | self.pre_prune(font) |
| 1485 | self.closure_glyphs(font) |
| 1486 | self.subset_glyphs(font) |
| 1487 | self.post_prune(font) |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1488 | |
Behdad Esfahbod | 756af49 | 2013-08-01 12:05:26 -0400 | [diff] [blame] | 1489 | |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1490 | import sys, time |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1491 | |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1492 | class Logger: |
| 1493 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1494 | def __init__(self, verbose=False, xml=False, timing=False): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1495 | self.verbose = verbose |
| 1496 | self.xml = xml |
| 1497 | self.timing = timing |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1498 | self.last_time = self.start_time = time.time() |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1499 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1500 | def parse_opts(self, argv): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1501 | argv = argv[:] |
| 1502 | for v in ['verbose', 'xml', 'timing']: |
| 1503 | if "--"+v in argv: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1504 | setattr(self, v, True) |
| 1505 | argv.remove("--"+v) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1506 | return argv |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1507 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1508 | def __call__(self, *things): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1509 | if not self.verbose: |
| 1510 | return |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1511 | print ' '.join(str(x) for x in things) |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1512 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1513 | def lapse(self, *things): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1514 | if not self.timing: |
| 1515 | return |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1516 | new_time = time.time() |
| 1517 | print "Took %0.3fs to %s" %(new_time - self.last_time, |
| 1518 | ' '.join(str(x) for x in things)) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1519 | self.last_time = new_time |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1520 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1521 | def glyphs(self, glyphs, glyph_names=True, font=None): |
| 1522 | self("Names: ", sorted(glyphs)) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1523 | if font: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1524 | reverseGlyphMap = font.getReverseGlyphMap() |
| 1525 | self("Gids : ", sorted(reverseGlyphMap[g] for g in glyphs)) |
Behdad Esfahbod | f549784 | 2013-08-08 21:57:02 -0400 | [diff] [blame] | 1526 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1527 | def font(self, font, file=sys.stdout): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1528 | if not self.xml: |
| 1529 | return |
| 1530 | import xmlWriter |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1531 | writer = xmlWriter.XMLWriter(file) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1532 | font.disassembleInstructions = False # Work around ttx bug |
| 1533 | for tag in font.keys(): |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1534 | writer.begintag(tag) |
| 1535 | writer.newline() |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1536 | font[tag].toXML(writer, font) |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1537 | writer.endtag(tag) |
| 1538 | writer.newline() |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1539 | |
Behdad Esfahbod | f6b668e | 2013-08-13 12:20:59 -0400 | [diff] [blame] | 1540 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1541 | def load_font(fontfile, dont_load_glyph_names=False): |
Behdad Esfahbod | f6b668e | 2013-08-13 12:20:59 -0400 | [diff] [blame] | 1542 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1543 | # TODO Option for ignoreDecompileErrors? |
Behdad Esfahbod | f6b668e | 2013-08-13 12:20:59 -0400 | [diff] [blame] | 1544 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1545 | font = fontTools.ttx.TTFont(fontfile) |
Behdad Esfahbod | f6b668e | 2013-08-13 12:20:59 -0400 | [diff] [blame] | 1546 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1547 | # Hack: |
| 1548 | # |
| 1549 | # If we don't need glyph names, change 'post' class to not try to |
| 1550 | # load them. It avoid lots of headache with broken fonts as well |
| 1551 | # as loading time. |
| 1552 | # |
| 1553 | # Ideally ttLib should provide a way to ask it to skip loading |
| 1554 | # glyph names. But it currently doesn't provide such a thing. |
| 1555 | # |
| 1556 | if dont_load_glyph_names: |
| 1557 | post = fontTools.ttLib.getTableClass('post') |
| 1558 | saved = post.decode_format_2_0 |
| 1559 | post.decode_format_2_0 = post.decode_format_3_0 |
| 1560 | f = font['post'] |
| 1561 | if f.formatType == 2.0: |
| 1562 | f.formatType = 3.0 |
| 1563 | post.decode_format_2_0 = saved |
Behdad Esfahbod | f6b668e | 2013-08-13 12:20:59 -0400 | [diff] [blame] | 1564 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1565 | return font |
Behdad Esfahbod | f6b668e | 2013-08-13 12:20:59 -0400 | [diff] [blame] | 1566 | |
| 1567 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1568 | def main(args): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1569 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1570 | log = Logger() |
| 1571 | args = log.parse_opts(args) |
Behdad Esfahbod | 4ae8171 | 2013-07-22 11:57:13 -0400 | [diff] [blame] | 1572 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1573 | options = Subsetter.Options() |
| 1574 | args = options.parse_opts(args, ignore_unknown=['text']) |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1575 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1576 | if len(args) < 2: |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1577 | print >>sys.stderr, "usage: pyotlss.py font-file glyph..." |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1578 | sys.exit(1) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 1579 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1580 | fontfile = args[0] |
| 1581 | args = args[1:] |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 1582 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1583 | dont_load_glyph_names =(not options.glyph_names and |
| 1584 | all(any(g.startswith(p) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1585 | for p in ['gid', 'glyph', 'uni', 'U+']) |
| 1586 | for g in args)) |
Behdad Esfahbod | f6b668e | 2013-08-13 12:20:59 -0400 | [diff] [blame] | 1587 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1588 | font = load_font(fontfile, dont_load_glyph_names=dont_load_glyph_names) |
| 1589 | subsetter = Subsetter(options=options, log=log) |
| 1590 | log.lapse("load font") |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 1591 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1592 | names = font.getGlyphNames() |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1593 | log.lapse("loading glyph names") |
Behdad Esfahbod | e7f5a89 | 2013-07-31 19:58:59 -0400 | [diff] [blame] | 1594 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1595 | glyphs = [] |
| 1596 | unicodes = [] |
| 1597 | text = "" |
| 1598 | for g in args: |
| 1599 | if g in names: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1600 | glyphs.append(g) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1601 | continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1602 | if g.startswith('--text='): |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1603 | text += g[7:] |
| 1604 | continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1605 | if g.startswith('uni') or g.startswith('U+'): |
| 1606 | if g.startswith('uni') and len(g) > 3: |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1607 | g = g[3:] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1608 | elif g.startswith('U+') and len(g) > 2: |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1609 | g = g[2:] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1610 | u = int(g, 16) |
| 1611 | unicodes.append(u) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1612 | continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1613 | if g.startswith('gid') or g.startswith('glyph'): |
| 1614 | if g.startswith('gid') and len(g) > 3: |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1615 | g = g[3:] |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1616 | elif g.startswith('glyph') and len(g) > 5: |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1617 | g = g[5:] |
| 1618 | try: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1619 | glyphs.append(font.getGlyphName(int(g), requireReal=1)) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1620 | except ValueError: |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1621 | raise Exception("Invalid glyph identifier: %s" % g) |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1622 | continue |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1623 | raise Exception("Invalid glyph identifier: %s" % g) |
| 1624 | log.lapse("compile glyph list") |
| 1625 | log("Unicodes:", unicodes) |
| 1626 | log("Glyphs:", glyphs) |
Behdad Esfahbod | 6df089a | 2013-07-31 19:27:14 -0400 | [diff] [blame] | 1627 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1628 | subsetter.populate(glyphs=glyphs, unicodes=unicodes, text=text) |
| 1629 | subsetter.subset(font) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 1630 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1631 | font.save(fontfile + '.subset') |
| 1632 | log.lapse("compile and save font") |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 1633 | |
Behdad Esfahbod | 9e856ea | 2013-08-13 19:50:38 -0400 | [diff] [blame] | 1634 | log.last_time = log.start_time |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1635 | log.lapse("make one with everything(TOTAL TIME)") |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 1636 | |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1637 | log.font(font) |
Behdad Esfahbod | 8c486d8 | 2013-07-24 13:34:47 -0400 | [diff] [blame] | 1638 | |
| 1639 | if __name__ == '__main__': |
Behdad Esfahbod | 77a2b28 | 2013-08-13 19:53:30 -0400 | [diff] [blame] | 1640 | main(sys.argv[1:]) |