Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 1 | #!/usr/bin/python |
| 2 | |
| 3 | # Python OpenType Layout Subsetter |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 4 | # |
| 5 | # Copyright 2013 Google, Inc. All Rights Reserved. |
| 6 | # |
| 7 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | # you may not use this file except in compliance with the License. |
| 9 | # You may obtain a copy of the License at |
| 10 | # |
| 11 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | # |
| 13 | # Unless required by applicable law or agreed to in writing, software |
| 14 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | # See the License for the specific language governing permissions and |
| 17 | # limitations under the License. |
| 18 | # |
| 19 | # Google Author(s): Behdad Esfahbod |
| 20 | # |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 21 | |
Behdad Esfahbod | fa3bc5e | 2013-07-24 14:37:58 -0400 | [diff] [blame] | 22 | # Try running on PyPy |
| 23 | try: |
| 24 | import numpypy |
| 25 | except ImportError: |
| 26 | pass |
| 27 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 28 | import fontTools.ttx |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 29 | import struct |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 30 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 31 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 32 | def add_method (*clazzes): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 33 | def wrapper(method): |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 34 | for clazz in clazzes: |
Behdad Esfahbod | c0d5959 | 2013-07-24 14:41:47 -0400 | [diff] [blame] | 35 | assert clazz.__name__ != 'DefaultTable', 'Oops, table class not found.' |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 36 | setattr (clazz, method.func_name, method) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 37 | return wrapper |
| 38 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 39 | def unique_sorted (l): |
Behdad Esfahbod | 2d9a096 | 2013-07-31 13:33:31 -0400 | [diff] [blame] | 40 | return sorted (set (l)) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 41 | |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 42 | def safeEval(data, eval=eval): |
| 43 | """A (kindof) safe replacement for eval.""" |
| 44 | return eval(data, {"__builtins__":{}}, {}) |
| 45 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 46 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 47 | @add_method(fontTools.ttLib.tables.otTables.Coverage) |
Behdad Esfahbod | 327dcc3 | 2013-07-31 13:50:51 -0400 | [diff] [blame] | 48 | def intersect (self, glyphs): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 49 | "Returns ascending list of matching coverage values." |
| 50 | return [i for (i,g) in enumerate (self.glyphs) if g in glyphs] |
| 51 | |
| 52 | @add_method(fontTools.ttLib.tables.otTables.Coverage) |
Behdad Esfahbod | 327dcc3 | 2013-07-31 13:50:51 -0400 | [diff] [blame] | 53 | def subset (self, glyphs): |
Behdad Esfahbod | d821ea0 | 2013-07-23 10:50:43 -0400 | [diff] [blame] | 54 | "Returns ascending list of remaining coverage values." |
Behdad Esfahbod | 327dcc3 | 2013-07-31 13:50:51 -0400 | [diff] [blame] | 55 | indices = self.intersect (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 56 | self.glyphs = [g for g in self.glyphs if g in glyphs] |
| 57 | return indices |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 58 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 59 | @add_method(fontTools.ttLib.tables.otTables.ClassDef) |
Behdad Esfahbod | 327dcc3 | 2013-07-31 13:50:51 -0400 | [diff] [blame] | 60 | def intersect (self, glyphs): |
Behdad Esfahbod | e10803e | 2013-08-08 21:09:27 -0400 | [diff] [blame] | 61 | "Returns ascending list of matching class values." |
Behdad Esfahbod | a1e0f13 | 2013-08-08 21:12:45 -0400 | [diff] [blame] | 62 | return unique_sorted (([0] if any (g not in self.classDefs for g in glyphs) else []) + \ |
Behdad Esfahbod | e10803e | 2013-08-08 21:09:27 -0400 | [diff] [blame] | 63 | [v for g,v in self.classDefs.items() if g in glyphs]) |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 64 | |
| 65 | @add_method(fontTools.ttLib.tables.otTables.ClassDef) |
Behdad Esfahbod | 327dcc3 | 2013-07-31 13:50:51 -0400 | [diff] [blame] | 66 | def intersects_class (self, glyphs, klass): |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 67 | "Returns true if any of glyphs has requested class." |
Behdad Esfahbod | e10803e | 2013-08-08 21:09:27 -0400 | [diff] [blame] | 68 | assert isinstance (klass, int) |
Behdad Esfahbod | 0befd6b | 2013-08-05 22:47:14 -0400 | [diff] [blame] | 69 | if klass == 0: |
Behdad Esfahbod | a1e0f13 | 2013-08-08 21:12:45 -0400 | [diff] [blame] | 70 | if any (g not in self.classDefs for g in glyphs): |
Behdad Esfahbod | 0befd6b | 2013-08-05 22:47:14 -0400 | [diff] [blame] | 71 | return True |
| 72 | # Fall through |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 73 | return any (g in glyphs for g,v in self.classDefs.items() if v == klass) |
| 74 | |
| 75 | @add_method(fontTools.ttLib.tables.otTables.ClassDef) |
Behdad Esfahbod | 327dcc3 | 2013-07-31 13:50:51 -0400 | [diff] [blame] | 76 | def subset (self, glyphs, remap=False): |
Behdad Esfahbod | a1e0f13 | 2013-08-08 21:12:45 -0400 | [diff] [blame] | 77 | "Returns ascending list of remaining classes." |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 78 | self.classDefs = {g:v for g,v in self.classDefs.items() if g in glyphs} |
Behdad Esfahbod | a1e0f13 | 2013-08-08 21:12:45 -0400 | [diff] [blame] | 79 | # Note: while class 0 has the special meaning of "not matched", if no glyph will |
| 80 | # ever /not match/, we can optimize class 0 out too. |
| 81 | indices = unique_sorted (([0] if any (g not in self.classDefs for g in glyphs) else []) + \ |
| 82 | self.classDefs.values ()) |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 83 | if remap: |
| 84 | self.remap (indices) |
| 85 | return indices |
Behdad Esfahbod | 4aa6ce3 | 2013-07-22 12:15:36 -0400 | [diff] [blame] | 86 | |
| 87 | @add_method(fontTools.ttLib.tables.otTables.ClassDef) |
| 88 | def remap (self, class_map): |
| 89 | "Remaps classes." |
| 90 | self.classDefs = {g:class_map.index (v) for g,v in self.classDefs.items()} |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 91 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 92 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 93 | def closure_glyphs (self, s): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 94 | if self.Format in [1, 2]: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 95 | return [v for g,v in self.mapping.items() if g in s.glyphs] |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 96 | else: |
| 97 | assert 0, "unknown format: %s" % self.Format |
| 98 | |
| 99 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 100 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 101 | if self.Format in [1, 2]: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 102 | self.mapping = {g:v for g,v in self.mapping.items() if g in s.glyphs} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 103 | return bool (self.mapping) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 104 | else: |
| 105 | assert 0, "unknown format: %s" % self.Format |
| 106 | |
| 107 | @add_method(fontTools.ttLib.tables.otTables.MultipleSubst) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 108 | def closure_glyphs (self, s): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 109 | if self.Format == 1: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 110 | indices = self.Coverage.intersect (s.glyphs) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 111 | return sum ((self.Sequence[i].Substitute for i in indices), []) |
| 112 | else: |
| 113 | assert 0, "unknown format: %s" % self.Format |
| 114 | |
| 115 | @add_method(fontTools.ttLib.tables.otTables.MultipleSubst) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 116 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 117 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 118 | indices = self.Coverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 119 | self.Sequence = [self.Sequence[i] for i in indices] |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 120 | self.SequenceCount = len (self.Sequence) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 121 | return bool (self.SequenceCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 122 | else: |
| 123 | assert 0, "unknown format: %s" % self.Format |
| 124 | |
| 125 | @add_method(fontTools.ttLib.tables.otTables.AlternateSubst) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 126 | def closure_glyphs (self, s): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 127 | if self.Format == 1: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 128 | return sum ((v for g,v in self.alternates.items() if g in s.glyphs), []) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 129 | else: |
| 130 | assert 0, "unknown format: %s" % self.Format |
| 131 | |
| 132 | @add_method(fontTools.ttLib.tables.otTables.AlternateSubst) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 133 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 134 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 135 | self.alternates = {g:v for g,v in self.alternates.items() if g in s.glyphs} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 136 | return bool (self.alternates) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 137 | else: |
| 138 | assert 0, "unknown format: %s" % self.Format |
| 139 | |
| 140 | @add_method(fontTools.ttLib.tables.otTables.LigatureSubst) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 141 | def closure_glyphs (self, s): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 142 | if self.Format == 1: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 143 | return sum (([seq.LigGlyph for seq in seqs if all(c in s.glyphs for c in seq.Component)] |
| 144 | for g,seqs in self.ligatures.items() if g in s.glyphs), []) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 145 | else: |
| 146 | assert 0, "unknown format: %s" % self.Format |
| 147 | |
| 148 | @add_method(fontTools.ttLib.tables.otTables.LigatureSubst) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 149 | def subset_glyphs (self, s): |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 150 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 151 | self.ligatures = {g:v for g,v in self.ligatures.items() if g in s.glyphs} |
| 152 | self.ligatures = {g:[seq for seq in seqs if all(c in s.glyphs for c in seq.Component)] |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 153 | for g,seqs in self.ligatures.items()} |
| 154 | self.ligatures = {g:v for g,v in self.ligatures.items() if v} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 155 | return bool (self.ligatures) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 156 | else: |
| 157 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 158 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 159 | @add_method(fontTools.ttLib.tables.otTables.ReverseChainSingleSubst) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 160 | def closure_glyphs (self, s): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 161 | if self.Format == 1: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 162 | indices = self.Coverage.intersect (s.glyphs) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 163 | if not indices or \ |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 164 | not all (c.intersect (s.glyphs) for c in self.LookAheadCoverage + self.BacktrackCoverage): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 165 | return [] |
| 166 | return [self.Substitute[i] for i in indices] |
| 167 | else: |
| 168 | assert 0, "unknown format: %s" % self.Format |
| 169 | |
| 170 | @add_method(fontTools.ttLib.tables.otTables.ReverseChainSingleSubst) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 171 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 172 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 173 | indices = self.Coverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 174 | self.Substitute = [self.Substitute[i] for i in indices] |
| 175 | self.GlyphCount = len (self.Substitute) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 176 | return bool (self.GlyphCount and all (c.subset (s.glyphs) for c in self.LookAheadCoverage + self.BacktrackCoverage)) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 177 | else: |
| 178 | assert 0, "unknown format: %s" % self.Format |
| 179 | |
| 180 | @add_method(fontTools.ttLib.tables.otTables.SinglePos) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 181 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 182 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 183 | return len (self.Coverage.subset (s.glyphs)) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 184 | elif self.Format == 2: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 185 | indices = self.Coverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 186 | self.Value = [self.Value[i] for i in indices] |
| 187 | self.ValueCount = len (self.Value) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 188 | return bool (self.ValueCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 189 | else: |
| 190 | assert 0, "unknown format: %s" % self.Format |
| 191 | |
| 192 | @add_method(fontTools.ttLib.tables.otTables.PairPos) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 193 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 194 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 195 | indices = self.Coverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 196 | self.PairSet = [self.PairSet[i] for i in indices] |
| 197 | for p in self.PairSet: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 198 | p.PairValueRecord = [r for r in p.PairValueRecord if r.SecondGlyph in s.glyphs] |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 199 | p.PairValueCount = len (p.PairValueRecord) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 200 | self.PairSet = [p for p in self.PairSet if p.PairValueCount] |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 201 | self.PairSetCount = len (self.PairSet) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 202 | return bool (self.PairSetCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 203 | elif self.Format == 2: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 204 | class1_map = self.ClassDef1.subset (s.glyphs, remap=True) |
| 205 | class2_map = self.ClassDef2.subset (s.glyphs, remap=True) |
Behdad Esfahbod | 4aa6ce3 | 2013-07-22 12:15:36 -0400 | [diff] [blame] | 206 | self.Class1Record = [self.Class1Record[i] for i in class1_map] |
| 207 | for c in self.Class1Record: |
| 208 | c.Class2Record = [c.Class2Record[i] for i in class2_map] |
| 209 | self.Class1Count = len (class1_map) |
| 210 | self.Class2Count = len (class2_map) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 211 | return bool (self.Class1Count and self.Class2Count and self.Coverage.subset (s.glyphs)) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 212 | else: |
| 213 | assert 0, "unknown format: %s" % self.Format |
| 214 | |
| 215 | @add_method(fontTools.ttLib.tables.otTables.CursivePos) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 216 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 217 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 218 | indices = self.Coverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 219 | self.EntryExitRecord = [self.EntryExitRecord[i] for i in indices] |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 220 | self.EntryExitCount = len (self.EntryExitRecord) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 221 | return bool (self.EntryExitCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 222 | else: |
| 223 | assert 0, "unknown format: %s" % self.Format |
| 224 | |
| 225 | @add_method(fontTools.ttLib.tables.otTables.MarkBasePos) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 226 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 227 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 228 | mark_indices = self.MarkCoverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 229 | self.MarkArray.MarkRecord = [self.MarkArray.MarkRecord[i] for i in mark_indices] |
| 230 | self.MarkArray.MarkCount = len (self.MarkArray.MarkRecord) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 231 | base_indices = self.BaseCoverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 232 | self.BaseArray.BaseRecord = [self.BaseArray.BaseRecord[i] for i in base_indices] |
| 233 | self.BaseArray.BaseCount = len (self.BaseArray.BaseRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 234 | # Prune empty classes |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 235 | class_indices = unique_sorted (v.Class for v in self.MarkArray.MarkRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 236 | self.ClassCount = len (class_indices) |
| 237 | for m in self.MarkArray.MarkRecord: |
| 238 | m.Class = class_indices.index (m.Class) |
| 239 | for b in self.BaseArray.BaseRecord: |
| 240 | b.BaseAnchor = [b.BaseAnchor[i] for i in class_indices] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 241 | return bool (self.ClassCount and self.MarkArray.MarkCount and self.BaseArray.BaseCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 242 | else: |
| 243 | assert 0, "unknown format: %s" % self.Format |
| 244 | |
| 245 | @add_method(fontTools.ttLib.tables.otTables.MarkLigPos) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 246 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 247 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 248 | mark_indices = self.MarkCoverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 249 | self.MarkArray.MarkRecord = [self.MarkArray.MarkRecord[i] for i in mark_indices] |
| 250 | self.MarkArray.MarkCount = len (self.MarkArray.MarkRecord) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 251 | ligature_indices = self.LigatureCoverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 252 | self.LigatureArray.LigatureAttach = [self.LigatureArray.LigatureAttach[i] for i in ligature_indices] |
| 253 | self.LigatureArray.LigatureCount = len (self.LigatureArray.LigatureAttach) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 254 | # Prune empty classes |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 255 | class_indices = unique_sorted (v.Class for v in self.MarkArray.MarkRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 256 | self.ClassCount = len (class_indices) |
| 257 | for m in self.MarkArray.MarkRecord: |
| 258 | m.Class = class_indices.index (m.Class) |
| 259 | for l in self.LigatureArray.LigatureAttach: |
| 260 | for c in l.ComponentRecord: |
| 261 | c.LigatureAnchor = [c.LigatureAnchor[i] for i in class_indices] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 262 | return bool (self.ClassCount and self.MarkArray.MarkCount and self.LigatureArray.LigatureCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 263 | else: |
| 264 | assert 0, "unknown format: %s" % self.Format |
| 265 | |
| 266 | @add_method(fontTools.ttLib.tables.otTables.MarkMarkPos) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 267 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 268 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 269 | mark1_indices = self.Mark1Coverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 270 | self.Mark1Array.MarkRecord = [self.Mark1Array.MarkRecord[i] for i in mark1_indices] |
| 271 | self.Mark1Array.MarkCount = len (self.Mark1Array.MarkRecord) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 272 | mark2_indices = self.Mark2Coverage.subset (s.glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 273 | self.Mark2Array.Mark2Record = [self.Mark2Array.Mark2Record[i] for i in mark2_indices] |
| 274 | self.Mark2Array.MarkCount = len (self.Mark2Array.Mark2Record) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 275 | # Prune empty classes |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 276 | class_indices = unique_sorted (v.Class for v in self.Mark1Array.MarkRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 277 | self.ClassCount = len (class_indices) |
| 278 | for m in self.Mark1Array.MarkRecord: |
| 279 | m.Class = class_indices.index (m.Class) |
| 280 | for b in self.Mark2Array.Mark2Record: |
| 281 | b.Mark2Anchor = [b.Mark2Anchor[i] for i in class_indices] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 282 | return bool (self.ClassCount and self.Mark1Array.MarkCount and self.Mark2Array.MarkCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 283 | else: |
| 284 | assert 0, "unknown format: %s" % self.Format |
| 285 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 286 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst, |
| 287 | fontTools.ttLib.tables.otTables.MultipleSubst, |
| 288 | fontTools.ttLib.tables.otTables.AlternateSubst, |
| 289 | fontTools.ttLib.tables.otTables.LigatureSubst, |
| 290 | fontTools.ttLib.tables.otTables.ReverseChainSingleSubst, |
| 291 | fontTools.ttLib.tables.otTables.SinglePos, |
| 292 | fontTools.ttLib.tables.otTables.PairPos, |
| 293 | fontTools.ttLib.tables.otTables.CursivePos, |
| 294 | fontTools.ttLib.tables.otTables.MarkBasePos, |
| 295 | fontTools.ttLib.tables.otTables.MarkLigPos, |
| 296 | fontTools.ttLib.tables.otTables.MarkMarkPos) |
| 297 | def subset_lookups (self, lookup_indices): |
| 298 | pass |
| 299 | |
| 300 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst, |
| 301 | fontTools.ttLib.tables.otTables.MultipleSubst, |
| 302 | fontTools.ttLib.tables.otTables.AlternateSubst, |
| 303 | fontTools.ttLib.tables.otTables.LigatureSubst, |
| 304 | fontTools.ttLib.tables.otTables.ReverseChainSingleSubst, |
| 305 | fontTools.ttLib.tables.otTables.SinglePos, |
| 306 | fontTools.ttLib.tables.otTables.PairPos, |
| 307 | fontTools.ttLib.tables.otTables.CursivePos, |
| 308 | fontTools.ttLib.tables.otTables.MarkBasePos, |
| 309 | fontTools.ttLib.tables.otTables.MarkLigPos, |
| 310 | fontTools.ttLib.tables.otTables.MarkMarkPos) |
| 311 | def collect_lookups (self): |
| 312 | return [] |
| 313 | |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 314 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ChainContextSubst, |
| 315 | fontTools.ttLib.tables.otTables.ContextPos, fontTools.ttLib.tables.otTables.ChainContextPos) |
| 316 | def __classify_context (self): |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 317 | |
| 318 | class ContextHelper: |
| 319 | def __init__ (self, klass, Format): |
| 320 | if klass.__name__.endswith ('Subst'): |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 321 | Typ = 'Sub' |
| 322 | Type = 'Subst' |
Behdad Esfahbod | 6870f8a | 2013-07-23 16:18:30 -0400 | [diff] [blame] | 323 | else: |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 324 | Typ = 'Pos' |
| 325 | Type = 'Pos' |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 326 | if klass.__name__.startswith ('Chain'): |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 327 | Chain = 'Chain' |
| 328 | else: |
| 329 | Chain = '' |
| 330 | ChainTyp = Chain+Typ |
| 331 | |
| 332 | self.Typ = Typ |
| 333 | self.Type = Type |
| 334 | self.Chain = Chain |
| 335 | self.ChainTyp = ChainTyp |
| 336 | |
| 337 | self.LookupRecord = Type+'LookupRecord' |
| 338 | |
Behdad Esfahbod | 452ab6c | 2013-07-23 22:57:43 -0400 | [diff] [blame] | 339 | if Format == 1: |
| 340 | ContextData = None |
| 341 | ChainContextData = None |
| 342 | RuleData = lambda r: r.Input |
| 343 | ChainRuleData = lambda r: r.Backtrack + r.Input + r.LookAhead |
Behdad Esfahbod | 44fc6f6 | 2013-07-24 11:24:39 -0400 | [diff] [blame] | 344 | SetRuleData = None |
| 345 | ChainSetRuleData = None |
Behdad Esfahbod | 452ab6c | 2013-07-23 22:57:43 -0400 | [diff] [blame] | 346 | elif Format == 2: |
Behdad Esfahbod | e3f2073 | 2013-07-24 11:26:43 -0400 | [diff] [blame] | 347 | ContextData = lambda r: (r.ClassDef,) |
| 348 | ChainContextData = lambda r: (r.LookAheadClassDef, r.InputClassDef, r.BacktrackClassDef) |
| 349 | RuleData = lambda r: (r.Class,) |
| 350 | ChainRuleData = lambda r: (r.LookAhead, r.Input, r.Backtrack) |
| 351 | def SetRuleData (r, d): (r.Class,) = d |
| 352 | def ChainSetRuleData (r, d): (r.LookAhead, r.Input, r.Backtrack) = d |
Behdad Esfahbod | 452ab6c | 2013-07-23 22:57:43 -0400 | [diff] [blame] | 353 | elif Format == 3: |
| 354 | ContextData = None |
| 355 | ChainContextData = None |
| 356 | RuleData = lambda r: r.Coverage |
| 357 | ChainRuleData = lambda r: r.LookAheadCoverage + r.InputCoverage + r.BacktrackCoverage |
Behdad Esfahbod | 44fc6f6 | 2013-07-24 11:24:39 -0400 | [diff] [blame] | 358 | SetRuleData = None |
| 359 | ChainSetRuleData = None |
Behdad Esfahbod | 452ab6c | 2013-07-23 22:57:43 -0400 | [diff] [blame] | 360 | else: |
| 361 | assert 0, "unknown format: %s" % Format |
| 362 | |
Behdad Esfahbod | 1ab2dbf | 2013-07-23 17:17:21 -0400 | [diff] [blame] | 363 | if Chain: |
Behdad Esfahbod | 707a37a | 2013-07-23 21:08:26 -0400 | [diff] [blame] | 364 | self.ContextData = ChainContextData |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 365 | self.RuleData = ChainRuleData |
Behdad Esfahbod | 44fc6f6 | 2013-07-24 11:24:39 -0400 | [diff] [blame] | 366 | self.SetRuleData = ChainSetRuleData |
Behdad Esfahbod | 1ab2dbf | 2013-07-23 17:17:21 -0400 | [diff] [blame] | 367 | else: |
Behdad Esfahbod | 707a37a | 2013-07-23 21:08:26 -0400 | [diff] [blame] | 368 | self.ContextData = ContextData |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 369 | self.RuleData = RuleData |
Behdad Esfahbod | 44fc6f6 | 2013-07-24 11:24:39 -0400 | [diff] [blame] | 370 | self.SetRuleData = SetRuleData |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 371 | |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 372 | if Format == 1: |
| 373 | self.Rule = ChainTyp+'Rule' |
| 374 | self.RuleCount = ChainTyp+'RuleCount' |
| 375 | self.RuleSet = ChainTyp+'RuleSet' |
| 376 | self.RuleSetCount = ChainTyp+'RuleSetCount' |
| 377 | elif Format == 2: |
| 378 | self.Rule = ChainTyp+'ClassRule' |
| 379 | self.RuleCount = ChainTyp+'ClassRuleCount' |
| 380 | self.RuleSet = ChainTyp+'ClassSet' |
| 381 | self.RuleSetCount = ChainTyp+'ClassSetCount' |
Behdad Esfahbod | 8998700 | 2013-07-23 23:07:42 -0400 | [diff] [blame] | 382 | |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 383 | self.ClassDef = 'InputClassDef' if Chain else 'ClassDef' |
Behdad Esfahbod | 2710839 | 2013-07-23 16:40:47 -0400 | [diff] [blame] | 384 | |
Behdad Esfahbod | b178dca | 2013-07-23 22:51:50 -0400 | [diff] [blame] | 385 | if self.Format not in [1, 2, 3]: |
| 386 | return None # Don't shoot the messenger; let it go |
| 387 | if not hasattr (self.__class__, "__ContextHelpers"): |
| 388 | self.__class__.__ContextHelpers = {} |
| 389 | if self.Format not in self.__class__.__ContextHelpers: |
| 390 | self.__class__.__ContextHelpers[self.Format] = ContextHelper (self.__class__, self.Format) |
| 391 | return self.__class__.__ContextHelpers[self.Format] |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 392 | |
Behdad Esfahbod | f2b6d9c | 2013-07-23 17:31:54 -0400 | [diff] [blame] | 393 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ChainContextSubst) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 394 | def closure_glyphs (self, s): |
Behdad Esfahbod | 1ab2dbf | 2013-07-23 17:17:21 -0400 | [diff] [blame] | 395 | c = self.__classify_context () |
| 396 | |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 397 | if self.Format == 1: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 398 | indices = self.Coverage.intersect (s.glyphs) |
Behdad Esfahbod | eeca982 | 2013-07-23 17:42:17 -0400 | [diff] [blame] | 399 | rss = getattr (self, c.RuleSet) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 400 | return sum ((s.table.LookupList.Lookup[ll.LookupListIndex].closure_glyphs (s) \ |
Behdad Esfahbod | dd6fc84 | 2013-08-06 11:12:49 -0400 | [diff] [blame] | 401 | for i in indices if rss[i] \ |
Behdad Esfahbod | eeca982 | 2013-07-23 17:42:17 -0400 | [diff] [blame] | 402 | for r in getattr (rss[i], c.Rule) \ |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 403 | if r and all (g in s.glyphs for g in c.RuleData (r)) \ |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 404 | for ll in getattr (r, c.LookupRecord) if ll \ |
Behdad Esfahbod | eeca982 | 2013-07-23 17:42:17 -0400 | [diff] [blame] | 405 | ), []) |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 406 | elif self.Format == 2: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 407 | if not self.Coverage.intersect (s.glyphs): |
Behdad Esfahbod | 3108430 | 2013-07-23 22:22:38 -0400 | [diff] [blame] | 408 | return [] |
Behdad Esfahbod | e10803e | 2013-08-08 21:09:27 -0400 | [diff] [blame] | 409 | # XXX Intersect glyphs with coverage before going further |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 410 | indices = getattr (self, c.ClassDef).intersect (s.glyphs) |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 411 | rss = getattr (self, c.RuleSet) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 412 | return sum ((s.table.LookupList.Lookup[ll.LookupListIndex].closure_glyphs (s) \ |
Behdad Esfahbod | dd6fc84 | 2013-08-06 11:12:49 -0400 | [diff] [blame] | 413 | for i in indices if rss[i] \ |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 414 | for r in getattr (rss[i], c.Rule) \ |
Behdad Esfahbod | e10803e | 2013-08-08 21:09:27 -0400 | [diff] [blame] | 415 | if r and all (all (cd.intersects_class (s.glyphs, k) for k in klist) \ |
| 416 | for cd,klist in zip (c.ContextData (self), c.RuleData (r))) \ |
Behdad Esfahbod | b8d5588 | 2013-07-23 22:17:39 -0400 | [diff] [blame] | 417 | for ll in getattr (r, c.LookupRecord) if ll \ |
| 418 | ), []) |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 419 | elif self.Format == 3: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 420 | if not all (x.intersect (s.glyphs) for x in c.RuleData (self)): |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 421 | return [] |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 422 | return sum ((s.table.LookupList.Lookup[ll.LookupListIndex].closure_glyphs (s) \ |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 423 | for ll in getattr (self, c.LookupRecord) if ll), []) |
Behdad Esfahbod | 0077697 | 2013-07-23 15:33:00 -0400 | [diff] [blame] | 424 | else: |
| 425 | assert 0, "unknown format: %s" % self.Format |
| 426 | |
Behdad Esfahbod | cbba4a6 | 2013-07-23 17:27:18 -0400 | [diff] [blame] | 427 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ContextPos, |
| 428 | fontTools.ttLib.tables.otTables.ChainContextSubst, fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 429 | def subset_glyphs (self, s): |
Behdad Esfahbod | d8c7e10 | 2013-07-23 17:07:06 -0400 | [diff] [blame] | 430 | c = self.__classify_context () |
| 431 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 432 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 433 | indices = self.Coverage.subset (s.glyphs) |
Behdad Esfahbod | d8c7e10 | 2013-07-23 17:07:06 -0400 | [diff] [blame] | 434 | rss = getattr (self, c.RuleSet) |
| 435 | rss = [rss[i] for i in indices] |
| 436 | for rs in rss: |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 437 | if rs: |
| 438 | ss = getattr (rs, c.Rule) |
| 439 | ss = [r for r in ss \ |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 440 | if r and all (g in s.glyphs for g in c.RuleData (r))] |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 441 | setattr (rs, c.Rule, ss) |
| 442 | setattr (rs, c.RuleCount, len (ss)) |
Behdad Esfahbod | cbba4a6 | 2013-07-23 17:27:18 -0400 | [diff] [blame] | 443 | # Prune empty subrulesets |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 444 | rss = [rs for rs in rss if rs and getattr (rs, c.Rule)] |
Behdad Esfahbod | d8c7e10 | 2013-07-23 17:07:06 -0400 | [diff] [blame] | 445 | setattr (self, c.RuleSet, rss) |
| 446 | setattr (self, c.RuleSetCount, len (rss)) |
| 447 | return bool (rss) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 448 | elif self.Format == 2: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 449 | if not self.Coverage.subset (s.glyphs): |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 450 | return False |
Behdad Esfahbod | e10803e | 2013-08-08 21:09:27 -0400 | [diff] [blame] | 451 | # XXX Intersect glyphs with coverage before going further |
| 452 | indices = getattr (self, c.ClassDef).subset (s.glyphs, remap=False) |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 453 | rss = getattr (self, c.RuleSet) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 454 | rss = [rss[i] for i in indices] |
| 455 | ContextData = c.ContextData (self) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 456 | klass_maps = [x.subset (s.glyphs, remap=True) for x in ContextData] |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 457 | for rs in rss: |
| 458 | if rs: |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 459 | ss = getattr (rs, c.Rule) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 460 | ss = [r for r in ss \ |
Behdad Esfahbod | e10803e | 2013-08-08 21:09:27 -0400 | [diff] [blame] | 461 | if r and all (all (k in klass_map for k in klist) \ |
| 462 | for klass_map,klist in zip (klass_maps, c.RuleData (r)))] |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 463 | setattr (rs, c.Rule, ss) |
| 464 | setattr (rs, c.RuleCount, len (ss)) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 465 | |
| 466 | # Remap rule classes |
| 467 | for r in ss: |
Behdad Esfahbod | e10803e | 2013-08-08 21:09:27 -0400 | [diff] [blame] | 468 | c.SetRuleData (r, [[klass_map.index (k) for k in klist] \ |
| 469 | for klass_map,klist in zip (klass_maps, c.RuleData (r))]) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 470 | # Prune empty subrulesets |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 471 | rss = [rs for rs in rss if rs and getattr (rs, c.Rule)] |
| 472 | setattr (self, c.RuleSet, rss) |
| 473 | setattr (self, c.RuleSetCount, len (rss)) |
Behdad Esfahbod | e9a3bd6 | 2013-07-23 22:41:11 -0400 | [diff] [blame] | 474 | return bool (rss) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 475 | elif self.Format == 3: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 476 | return all (x.subset (s.glyphs) for x in c.RuleData (self)) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 477 | else: |
| 478 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 479 | |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 480 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ChainContextSubst, |
| 481 | fontTools.ttLib.tables.otTables.ContextPos, fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 482 | def subset_lookups (self, lookup_indices): |
Behdad Esfahbod | 6870f8a | 2013-07-23 16:18:30 -0400 | [diff] [blame] | 483 | c = self.__classify_context () |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 484 | |
Behdad Esfahbod | 1f57363 | 2013-07-23 23:04:43 -0400 | [diff] [blame] | 485 | if self.Format in [1, 2]: |
Behdad Esfahbod | 9e73572 | 2013-07-23 16:35:23 -0400 | [diff] [blame] | 486 | for rs in getattr (self, c.RuleSet): |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 487 | if rs: |
| 488 | for r in getattr (rs, c.Rule): |
| 489 | if r: |
Behdad Esfahbod | 1f57363 | 2013-07-23 23:04:43 -0400 | [diff] [blame] | 490 | setattr (r, c.LookupRecord, [ll for ll in getattr (r, c.LookupRecord) if ll \ |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 491 | if ll.LookupListIndex in lookup_indices]) |
| 492 | for ll in getattr (r, c.LookupRecord): |
| 493 | if ll: |
| 494 | ll.LookupListIndex = lookup_indices.index (ll.LookupListIndex) |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 495 | elif self.Format == 3: |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 496 | setattr (self, c.LookupRecord, [ll for ll in getattr (self, c.LookupRecord) if ll \ |
Behdad Esfahbod | 6870f8a | 2013-07-23 16:18:30 -0400 | [diff] [blame] | 497 | if ll.LookupListIndex in lookup_indices]) |
| 498 | for ll in getattr (self, c.LookupRecord): |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 499 | if ll: |
| 500 | ll.LookupListIndex = lookup_indices.index (ll.LookupListIndex) |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 501 | else: |
| 502 | assert 0, "unknown format: %s" % self.Format |
| 503 | |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 504 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ChainContextSubst, |
| 505 | fontTools.ttLib.tables.otTables.ContextPos, fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 506 | def collect_lookups (self): |
Behdad Esfahbod | 6870f8a | 2013-07-23 16:18:30 -0400 | [diff] [blame] | 507 | c = self.__classify_context () |
Behdad Esfahbod | 44c2b3c | 2013-07-23 16:00:32 -0400 | [diff] [blame] | 508 | |
Behdad Esfahbod | 1f57363 | 2013-07-23 23:04:43 -0400 | [diff] [blame] | 509 | if self.Format in [1, 2]: |
Behdad Esfahbod | 2710839 | 2013-07-23 16:40:47 -0400 | [diff] [blame] | 510 | return [ll.LookupListIndex \ |
Behdad Esfahbod | bac31f5 | 2013-07-23 23:00:39 -0400 | [diff] [blame] | 511 | for rs in getattr (self, c.RuleSet) if rs \ |
| 512 | for r in getattr (rs, c.Rule) if r \ |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 513 | for ll in getattr (r, c.LookupRecord) if ll] |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 514 | elif self.Format == 3: |
Behdad Esfahbod | 6870f8a | 2013-07-23 16:18:30 -0400 | [diff] [blame] | 515 | return [ll.LookupListIndex \ |
Behdad Esfahbod | 7c225a6 | 2013-07-23 21:33:13 -0400 | [diff] [blame] | 516 | for ll in getattr (self, c.LookupRecord) if ll] |
Behdad Esfahbod | 59dfc13 | 2013-07-23 15:39:20 -0400 | [diff] [blame] | 517 | else: |
| 518 | assert 0, "unknown format: %s" % self.Format |
| 519 | |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 520 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 521 | def closure_glyphs (self, s): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 522 | if self.Format == 1: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 523 | return self.ExtSubTable.closure_glyphs (s) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 524 | else: |
| 525 | assert 0, "unknown format: %s" % self.Format |
| 526 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 527 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, fontTools.ttLib.tables.otTables.ExtensionPos) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 528 | def subset_glyphs (self, s): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 529 | if self.Format == 1: |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 530 | return self.ExtSubTable.subset_glyphs (s) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 531 | else: |
| 532 | assert 0, "unknown format: %s" % self.Format |
| 533 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 534 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, fontTools.ttLib.tables.otTables.ExtensionPos) |
| 535 | def subset_lookups (self, lookup_indices): |
| 536 | if self.Format == 1: |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 537 | return self.ExtSubTable.subset_lookups (lookup_indices) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 538 | else: |
| 539 | assert 0, "unknown format: %s" % self.Format |
| 540 | |
| 541 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, fontTools.ttLib.tables.otTables.ExtensionPos) |
| 542 | def collect_lookups (self): |
| 543 | if self.Format == 1: |
| 544 | return self.ExtSubTable.collect_lookups () |
| 545 | else: |
| 546 | assert 0, "unknown format: %s" % self.Format |
| 547 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 548 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 549 | def closure_glyphs (self, s): |
| 550 | return sum ((st.closure_glyphs (s) for st in self.SubTable if st), []) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 551 | |
| 552 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 553 | def subset_glyphs (self, s): |
| 554 | self.SubTable = [st for st in self.SubTable if st and st.subset_glyphs (s)] |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 555 | self.SubTableCount = len (self.SubTable) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 556 | return bool (self.SubTableCount) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 557 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 558 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
| 559 | def subset_lookups (self, lookup_indices): |
| 560 | for s in self.SubTable: |
| 561 | s.subset_lookups (lookup_indices) |
| 562 | |
| 563 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
| 564 | def collect_lookups (self): |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 565 | return unique_sorted (sum ((st.collect_lookups () for st in self.SubTable if st), [])) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 566 | |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 567 | @add_method(fontTools.ttLib.tables.otTables.LookupList) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 568 | def subset_glyphs (self, s): |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 569 | "Returns the indices of nonempty lookups." |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 570 | 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] | 571 | |
| 572 | @add_method(fontTools.ttLib.tables.otTables.LookupList) |
| 573 | def subset_lookups (self, lookup_indices): |
Behdad Esfahbod | afae832 | 2013-07-24 18:57:06 -0400 | [diff] [blame] | 574 | self.Lookup = [self.Lookup[i] for i in lookup_indices if i < self.LookupCount] |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 575 | self.LookupCount = len (self.Lookup) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 576 | for l in self.Lookup: |
| 577 | l.subset_lookups (lookup_indices) |
| 578 | |
| 579 | @add_method(fontTools.ttLib.tables.otTables.LookupList) |
| 580 | def closure_lookups (self, lookup_indices): |
Behdad Esfahbod | bb7e213 | 2013-07-23 13:48:35 -0400 | [diff] [blame] | 581 | lookup_indices = unique_sorted (lookup_indices) |
| 582 | recurse = lookup_indices |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 583 | while True: |
Behdad Esfahbod | afae832 | 2013-07-24 18:57:06 -0400 | [diff] [blame] | 584 | recurse_lookups = sum ((self.Lookup[i].collect_lookups () for i in recurse if i < self.LookupCount), []) |
| 585 | recurse_lookups = [l for l in recurse_lookups if l not in lookup_indices and l < self.LookupCount] |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 586 | if not recurse_lookups: |
Behdad Esfahbod | bb7e213 | 2013-07-23 13:48:35 -0400 | [diff] [blame] | 587 | return unique_sorted (lookup_indices) |
| 588 | recurse_lookups = unique_sorted (recurse_lookups) |
| 589 | lookup_indices.extend (recurse_lookups) |
| 590 | recurse = recurse_lookups |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 591 | |
| 592 | @add_method(fontTools.ttLib.tables.otTables.Feature) |
| 593 | def subset_lookups (self, lookup_indices): |
| 594 | self.LookupListIndex = [l for l in self.LookupListIndex if l in lookup_indices] |
| 595 | # Now map them. |
| 596 | self.LookupListIndex = [lookup_indices.index (l) for l in self.LookupListIndex] |
| 597 | self.LookupCount = len (self.LookupListIndex) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 598 | return self.LookupCount |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 599 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 600 | @add_method(fontTools.ttLib.tables.otTables.Feature) |
| 601 | def collect_lookups (self): |
| 602 | return self.LookupListIndex[:] |
| 603 | |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 604 | @add_method(fontTools.ttLib.tables.otTables.FeatureList) |
| 605 | def subset_lookups (self, lookup_indices): |
| 606 | "Returns the indices of nonempty features." |
| 607 | feature_indices = [i for (i,f) in enumerate (self.FeatureRecord) if f.Feature.subset_lookups (lookup_indices)] |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 608 | self.subset_features (feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 609 | return feature_indices |
| 610 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 611 | @add_method(fontTools.ttLib.tables.otTables.FeatureList) |
| 612 | def collect_lookups (self, feature_indices): |
| 613 | return unique_sorted (sum ((self.FeatureRecord[i].Feature.collect_lookups () for i in feature_indices |
| 614 | if i < self.FeatureCount), [])) |
| 615 | |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 616 | @add_method(fontTools.ttLib.tables.otTables.FeatureList) |
| 617 | def subset_features (self, feature_indices): |
| 618 | self.FeatureRecord = [self.FeatureRecord[i] for i in feature_indices] |
| 619 | self.FeatureCount = len (self.FeatureRecord) |
| 620 | return bool (self.FeatureCount) |
| 621 | |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 622 | @add_method(fontTools.ttLib.tables.otTables.DefaultLangSys, fontTools.ttLib.tables.otTables.LangSys) |
| 623 | def subset_features (self, feature_indices): |
Behdad Esfahbod | 69ce150 | 2013-07-22 18:00:31 -0400 | [diff] [blame] | 624 | if self.ReqFeatureIndex in feature_indices: |
| 625 | self.ReqFeatureIndex = feature_indices.index (self.ReqFeatureIndex) |
| 626 | else: |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 627 | self.ReqFeatureIndex = 65535 |
| 628 | self.FeatureIndex = [f for f in self.FeatureIndex if f in feature_indices] |
Behdad Esfahbod | 69ce150 | 2013-07-22 18:00:31 -0400 | [diff] [blame] | 629 | # Now map them. |
| 630 | self.FeatureIndex = [feature_indices.index (f) for f in self.FeatureIndex if f in feature_indices] |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 631 | self.FeatureCount = len (self.FeatureIndex) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 632 | return bool (self.FeatureCount or self.ReqFeatureIndex != 65535) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 633 | |
| 634 | @add_method(fontTools.ttLib.tables.otTables.DefaultLangSys, fontTools.ttLib.tables.otTables.LangSys) |
| 635 | def collect_features (self): |
| 636 | feature_indices = self.FeatureIndex[:] |
| 637 | if self.ReqFeatureIndex != 65535: |
| 638 | feature_indices.append (self.ReqFeatureIndex) |
| 639 | return unique_sorted (feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 640 | |
| 641 | @add_method(fontTools.ttLib.tables.otTables.Script) |
| 642 | def subset_features (self, feature_indices): |
| 643 | if self.DefaultLangSys and not self.DefaultLangSys.subset_features (feature_indices): |
| 644 | self.DefaultLangSys = None |
| 645 | self.LangSysRecord = [l for l in self.LangSysRecord if l.LangSys.subset_features (feature_indices)] |
| 646 | self.LangSysCount = len (self.LangSysRecord) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 647 | return bool (self.LangSysCount or self.DefaultLangSys) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 648 | |
| 649 | @add_method(fontTools.ttLib.tables.otTables.Script) |
| 650 | def collect_features (self): |
Behdad Esfahbod | 2307c8b | 2013-07-23 11:18:13 -0400 | [diff] [blame] | 651 | feature_indices = [l.LangSys.collect_features () for l in self.LangSysRecord] |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 652 | if self.DefaultLangSys: |
| 653 | feature_indices.append (self.DefaultLangSys.collect_features ()) |
| 654 | return unique_sorted (sum (feature_indices, [])) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 655 | |
| 656 | @add_method(fontTools.ttLib.tables.otTables.ScriptList) |
| 657 | def subset_features (self, feature_indices): |
| 658 | self.ScriptRecord = [s for s in self.ScriptRecord if s.Script.subset_features (feature_indices)] |
| 659 | self.ScriptCount = len (self.ScriptRecord) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 660 | return bool (self.ScriptCount) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 661 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 662 | @add_method(fontTools.ttLib.tables.otTables.ScriptList) |
| 663 | def collect_features (self): |
| 664 | return unique_sorted (sum ((s.Script.collect_features () for s in self.ScriptRecord), [])) |
| 665 | |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 666 | @add_method(fontTools.ttLib.getTableClass('GSUB')) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 667 | def closure_glyphs (self, s): |
| 668 | s.table = self.table |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 669 | feature_indices = self.table.ScriptList.collect_features () |
| 670 | lookup_indices = self.table.FeatureList.collect_lookups (feature_indices) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 671 | orig_glyphs = s.glyphs |
| 672 | glyphs = unique_sorted (s.glyphs) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 673 | while True: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 674 | s.glyphs = glyphs |
| 675 | additions = (sum ((self.table.LookupList.Lookup[i].closure_glyphs (s) \ |
Behdad Esfahbod | afae832 | 2013-07-24 18:57:06 -0400 | [diff] [blame] | 676 | for i in lookup_indices if i < self.table.LookupList.LookupCount), [])) |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 677 | additions = unique_sorted (g for g in additions if g not in glyphs) |
| 678 | if not additions: |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 679 | s.glyphs = orig_glyphs |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 680 | return glyphs |
| 681 | glyphs.extend (additions) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 682 | del s.table |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 683 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 684 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 685 | def subset_glyphs (self, s): |
Behdad Esfahbod | a6dbb7a | 2013-07-31 19:53:57 -0400 | [diff] [blame] | 686 | s.glyphs = s.glyphs_gsubed |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 687 | lookup_indices = self.table.LookupList.subset_glyphs (s) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 688 | self.subset_lookups (lookup_indices) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 689 | self.prune_lookups () |
| 690 | return True |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 691 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 692 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 693 | def subset_lookups (self, lookup_indices): |
| 694 | "Retrains specified lookups, then removes empty features, language systems, and scripts." |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 695 | self.table.LookupList.subset_lookups (lookup_indices) |
| 696 | feature_indices = self.table.FeatureList.subset_lookups (lookup_indices) |
| 697 | self.table.ScriptList.subset_features (feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 698 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 699 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
| 700 | def prune_lookups (self): |
| 701 | "Remove unreferenced lookups" |
| 702 | feature_indices = self.table.ScriptList.collect_features () |
| 703 | lookup_indices = self.table.FeatureList.collect_lookups (feature_indices) |
| 704 | lookup_indices = self.table.LookupList.closure_lookups (lookup_indices) |
| 705 | self.subset_lookups (lookup_indices) |
| 706 | |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 707 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
| 708 | def subset_feature_tags (self, feature_tags): |
| 709 | feature_indices = [i for (i,f) in enumerate (self.table.FeatureList.FeatureRecord) if f.FeatureTag in feature_tags] |
| 710 | self.table.FeatureList.subset_features (feature_indices) |
| 711 | self.table.ScriptList.subset_features (feature_indices) |
| 712 | |
| 713 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 714 | def prune_pre_subset (self, options): |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 715 | if options.layout_features and '*' not in options.layout_features: |
| 716 | self.subset_feature_tags (options.layout_features) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 717 | self.prune_lookups () |
| 718 | return True |
| 719 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 720 | @add_method(fontTools.ttLib.getTableClass('GDEF')) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 721 | def subset_glyphs (self, s): |
Behdad Esfahbod | a6dbb7a | 2013-07-31 19:53:57 -0400 | [diff] [blame] | 722 | glyphs = s.glyphs_gsubed |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 723 | table = self.table |
| 724 | if table.LigCaretList: |
Behdad Esfahbod | a6dbb7a | 2013-07-31 19:53:57 -0400 | [diff] [blame] | 725 | indices = table.LigCaretList.Coverage.subset (glyphs) |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 726 | table.LigCaretList.LigGlyph = [table.LigCaretList.LigGlyph[i] for i in indices] |
| 727 | table.LigCaretList.LigGlyphCount = len (table.LigCaretList.LigGlyph) |
| 728 | if not table.LigCaretList.LigGlyphCount: |
| 729 | table.LigCaretList = None |
| 730 | if table.MarkAttachClassDef: |
Behdad Esfahbod | a6dbb7a | 2013-07-31 19:53:57 -0400 | [diff] [blame] | 731 | table.MarkAttachClassDef.classDefs = {g:v for g,v in table.MarkAttachClassDef.classDefs.items() if g in glyphs} |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 732 | if not table.MarkAttachClassDef.classDefs: |
| 733 | table.MarkAttachClassDef = None |
| 734 | if table.GlyphClassDef: |
Behdad Esfahbod | a6dbb7a | 2013-07-31 19:53:57 -0400 | [diff] [blame] | 735 | table.GlyphClassDef.classDefs = {g:v for g,v in table.GlyphClassDef.classDefs.items() if g in glyphs} |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 736 | if not table.GlyphClassDef.classDefs: |
| 737 | table.GlyphClassDef = None |
| 738 | if table.AttachList: |
Behdad Esfahbod | a6dbb7a | 2013-07-31 19:53:57 -0400 | [diff] [blame] | 739 | indices = table.AttachList.Coverage.subset (glyphs) |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 740 | table.AttachList.AttachPoint = [table.AttachList.AttachPoint[i] for i in indices] |
| 741 | table.AttachList.GlyphCount = len (table.AttachList.AttachPoint) |
| 742 | if not table.AttachList.GlyphCount: |
| 743 | table.AttachList = None |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 744 | return bool (table.LigCaretList or table.MarkAttachClassDef or table.GlyphClassDef or table.AttachList) |
Behdad Esfahbod | efb984a | 2013-07-21 22:26:16 -0400 | [diff] [blame] | 745 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 746 | @add_method(fontTools.ttLib.getTableClass('kern')) |
Behdad Esfahbod | d4e33a7 | 2013-07-24 18:51:05 -0400 | [diff] [blame] | 747 | def prune_pre_subset (self, options): |
| 748 | # Prune unknown kern table types |
| 749 | self.kernTables = [t for t in self.kernTables if hasattr (t, 'kernTable')] |
| 750 | return bool (self.kernTables) |
| 751 | |
| 752 | @add_method(fontTools.ttLib.getTableClass('kern')) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 753 | def subset_glyphs (self, s): |
Behdad Esfahbod | a6dbb7a | 2013-07-31 19:53:57 -0400 | [diff] [blame] | 754 | glyphs = s.glyphs_gsubed |
Behdad Esfahbod | 5270ec4 | 2013-07-22 12:57:02 -0400 | [diff] [blame] | 755 | for t in self.kernTables: |
Behdad Esfahbod | a6dbb7a | 2013-07-31 19:53:57 -0400 | [diff] [blame] | 756 | t.kernTable = {(a,b):v for ((a,b),v) in t.kernTable.items() if a in glyphs and b in glyphs} |
Behdad Esfahbod | 5270ec4 | 2013-07-22 12:57:02 -0400 | [diff] [blame] | 757 | self.kernTables = [t for t in self.kernTables if t.kernTable] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 758 | return bool (self.kernTables) |
Behdad Esfahbod | efb984a | 2013-07-21 22:26:16 -0400 | [diff] [blame] | 759 | |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 760 | @add_method(fontTools.ttLib.getTableClass('hmtx'), fontTools.ttLib.getTableClass('vmtx')) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 761 | def subset_glyphs (self, s): |
| 762 | self.metrics = {g:v for g,v in self.metrics.items() if g in s.glyphs} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 763 | return bool (self.metrics) |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 764 | |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 765 | @add_method(fontTools.ttLib.getTableClass('hdmx')) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 766 | def subset_glyphs (self, s): |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 767 | self.hdmx = {sz:{g:v for g,v in l.items() if g in s.glyphs} for (sz,l) in self.hdmx.items()} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 768 | return bool (self.hdmx) |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 769 | |
Behdad Esfahbod | e45d6af | 2013-07-22 15:29:17 -0400 | [diff] [blame] | 770 | @add_method(fontTools.ttLib.getTableClass('VORG')) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 771 | def subset_glyphs (self, s): |
| 772 | self.VOriginRecords = {g:v for g,v in self.VOriginRecords.items() if g in s.glyphs} |
Behdad Esfahbod | e45d6af | 2013-07-22 15:29:17 -0400 | [diff] [blame] | 773 | self.numVertOriginYMetrics = len (self.VOriginRecords) |
| 774 | return True # Never drop; has default metrics |
| 775 | |
Behdad Esfahbod | 8c646f6 | 2013-07-22 15:06:23 -0400 | [diff] [blame] | 776 | @add_method(fontTools.ttLib.getTableClass('post')) |
Behdad Esfahbod | 8c486d8 | 2013-07-24 13:34:47 -0400 | [diff] [blame] | 777 | def prune_pre_subset (self, options): |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 778 | if not options.glyph_names: |
Behdad Esfahbod | 4264824 | 2013-07-23 12:56:06 -0400 | [diff] [blame] | 779 | self.formatType = 3.0 |
| 780 | return True |
| 781 | |
| 782 | @add_method(fontTools.ttLib.getTableClass('post')) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 783 | def subset_glyphs (self, s): |
Behdad Esfahbod | 4264824 | 2013-07-23 12:56:06 -0400 | [diff] [blame] | 784 | self.extraNames = [] # This seems to do it |
Behdad Esfahbod | c9dec9d | 2013-07-23 10:28:47 -0400 | [diff] [blame] | 785 | return True |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 786 | |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 787 | # Copied from _g_l_y_f.py |
| 788 | ARG_1_AND_2_ARE_WORDS = 0x0001 # if set args are words otherwise they are bytes |
| 789 | ARGS_ARE_XY_VALUES = 0x0002 # if set args are xy values, otherwise they are points |
| 790 | ROUND_XY_TO_GRID = 0x0004 # for the xy values if above is true |
| 791 | WE_HAVE_A_SCALE = 0x0008 # Sx = Sy, otherwise scale == 1.0 |
| 792 | NON_OVERLAPPING = 0x0010 # set to same value for all components (obsolete!) |
| 793 | MORE_COMPONENTS = 0x0020 # indicates at least one more glyph after this one |
| 794 | WE_HAVE_AN_X_AND_Y_SCALE = 0x0040 # Sx, Sy |
| 795 | WE_HAVE_A_TWO_BY_TWO = 0x0080 # t00, t01, t10, t11 |
| 796 | WE_HAVE_INSTRUCTIONS = 0x0100 # instructions follow |
| 797 | USE_MY_METRICS = 0x0200 # apply these metrics to parent glyph |
| 798 | OVERLAP_COMPOUND = 0x0400 # used by Apple in GX fonts |
| 799 | SCALED_COMPONENT_OFFSET = 0x0800 # composite designed to have the component offset scaled (designed for Apple) |
| 800 | UNSCALED_COMPONENT_OFFSET = 0x1000 # composite designed not to have the component offset scaled (designed for MS) |
| 801 | |
| 802 | @add_method(fontTools.ttLib.getTableModule('glyf').Glyph) |
| 803 | def getComponentNamesFast (self, glyfTable): |
| 804 | if struct.unpack(">h", self.data[:2])[0] >= 0: |
| 805 | return [] # Not composite |
| 806 | data = self.data |
| 807 | i = 10 |
| 808 | components = [] |
| 809 | more = 1 |
| 810 | while more: |
| 811 | flags, glyphID = struct.unpack(">HH", data[i:i+4]) |
| 812 | i += 4 |
| 813 | flags = int(flags) |
| 814 | components.append (glyfTable.getGlyphName (int (glyphID))) |
| 815 | |
| 816 | if flags & ARG_1_AND_2_ARE_WORDS: i += 4 |
| 817 | else: i += 2 |
| 818 | if flags & WE_HAVE_A_SCALE: i += 2 |
| 819 | elif flags & WE_HAVE_AN_X_AND_Y_SCALE: i += 4 |
| 820 | elif flags & WE_HAVE_A_TWO_BY_TWO: i += 8 |
| 821 | more = flags & MORE_COMPONENTS |
| 822 | return components |
| 823 | |
| 824 | @add_method(fontTools.ttLib.getTableModule('glyf').Glyph) |
| 825 | def remapComponentsFast (self, indices): |
| 826 | if struct.unpack(">h", self.data[:2])[0] >= 0: |
| 827 | return # Not composite |
| 828 | data = bytearray (self.data) |
| 829 | i = 10 |
| 830 | more = 1 |
| 831 | while more: |
| 832 | flags = (data[i] << 8) | data[i+1] |
| 833 | glyphID = (data[i+2] << 8) | data[i+3] |
| 834 | # Remap |
| 835 | glyphID = indices.index (glyphID) |
| 836 | data[i+2] = glyphID >> 8 |
| 837 | data[i+3] = glyphID & 0xFF |
| 838 | i += 4 |
| 839 | flags = int(flags) |
| 840 | |
| 841 | if flags & ARG_1_AND_2_ARE_WORDS: i += 4 |
| 842 | else: i += 2 |
| 843 | if flags & WE_HAVE_A_SCALE: i += 2 |
| 844 | elif flags & WE_HAVE_AN_X_AND_Y_SCALE: i += 4 |
| 845 | elif flags & WE_HAVE_A_TWO_BY_TWO: i += 8 |
| 846 | more = flags & MORE_COMPONENTS |
| 847 | self.data = str (data) |
| 848 | |
Behdad Esfahbod | 6ec8854 | 2013-07-24 16:52:47 -0400 | [diff] [blame] | 849 | @add_method(fontTools.ttLib.getTableModule('glyf').Glyph) |
| 850 | def dropInstructionsFast (self): |
Behdad Esfahbod | 6ec8854 | 2013-07-24 16:52:47 -0400 | [diff] [blame] | 851 | numContours = struct.unpack(">h", self.data[:2])[0] |
| 852 | data = bytearray (self.data) |
| 853 | i = 10 |
| 854 | if numContours >= 0: |
| 855 | i += 2 * numContours # endPtsOfContours |
| 856 | instructionLen = (data[i] << 8) | data[i+1] |
| 857 | # Zero it |
| 858 | data[i] = data [i+1] = 0 |
| 859 | i += 2 |
Behdad Esfahbod | 0fb6988 | 2013-07-24 17:25:35 -0400 | [diff] [blame] | 860 | if instructionLen: |
| 861 | # Splice it out |
| 862 | data = data[:i] + data[i+instructionLen:] |
Behdad Esfahbod | 6ec8854 | 2013-07-24 16:52:47 -0400 | [diff] [blame] | 863 | else: |
| 864 | more = 1 |
| 865 | while more: |
| 866 | flags = (data[i] << 8) | data[i+1] |
| 867 | # Turn instruction flag off |
| 868 | flags &= ~WE_HAVE_INSTRUCTIONS |
| 869 | data[i+0] = flags >> 8 |
| 870 | data[i+1] = flags & 0xFF |
| 871 | i += 4 |
| 872 | flags = int(flags) |
| 873 | |
| 874 | if flags & ARG_1_AND_2_ARE_WORDS: i += 4 |
| 875 | else: i += 2 |
| 876 | if flags & WE_HAVE_A_SCALE: i += 2 |
| 877 | elif flags & WE_HAVE_AN_X_AND_Y_SCALE: i += 4 |
| 878 | elif flags & WE_HAVE_A_TWO_BY_TWO: i += 8 |
| 879 | more = flags & MORE_COMPONENTS |
| 880 | # Cut off |
| 881 | data = data[:i] |
| 882 | if len(data) % 4: |
| 883 | # add pad bytes |
| 884 | nPadBytes = 4 - (len(data) % 4) |
| 885 | for i in range (nPadBytes): |
| 886 | data.append (0) |
| 887 | self.data = str (data) |
| 888 | |
Behdad Esfahbod | 861d915 | 2013-07-22 16:47:24 -0400 | [diff] [blame] | 889 | @add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | 254442b | 2013-07-31 14:20:13 -0400 | [diff] [blame] | 890 | def closure_glyphs (self, s): |
| 891 | glyphs = unique_sorted (s.glyphs) |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 892 | decompose = glyphs |
| 893 | # I don't know if component glyphs can be composite themselves. |
| 894 | # We handle them anyway. |
| 895 | while True: |
| 896 | components = [] |
| 897 | for g in decompose: |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 898 | if g not in self.glyphs: |
Behdad Esfahbod | f8c20e4 | 2013-07-23 23:13:23 -0400 | [diff] [blame] | 899 | continue |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 900 | gl = self.glyphs[g] |
| 901 | if hasattr (gl, "data"): |
| 902 | for c in gl.getComponentNamesFast (self): |
| 903 | if c not in glyphs: |
| 904 | components.append (c) |
| 905 | else: |
| 906 | # TTX seems to expand gid0..3 always |
| 907 | if gl.isComposite (): |
| 908 | for c in gl.components: |
| 909 | if c.glyphName not in glyphs: |
| 910 | components.append (c.glyphName) |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 911 | components = [c for c in components if c not in glyphs] |
| 912 | if not components: |
| 913 | return glyphs |
| 914 | decompose = unique_sorted (components) |
| 915 | glyphs.extend (components) |
| 916 | |
| 917 | @add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 918 | def subset_glyphs (self, s): |
| 919 | self.glyphs = {g:v for g,v in self.glyphs.items() if g in s.glyphs} |
| 920 | indices = [i for i,g in enumerate (self.glyphOrder) if g in s.glyphs] |
Behdad Esfahbod | 4cf7a80 | 2013-07-24 16:08:35 -0400 | [diff] [blame] | 921 | for v in self.glyphs.values (): |
| 922 | if hasattr (v, "data"): |
| 923 | v.remapComponentsFast (indices) |
| 924 | else: |
| 925 | pass # No need |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 926 | self.glyphOrder = [g for g in self.glyphOrder if g in s.glyphs] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 927 | return bool (self.glyphs) |
Behdad Esfahbod | 861d915 | 2013-07-22 16:47:24 -0400 | [diff] [blame] | 928 | |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 929 | @add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 930 | def prune_post_subset (self, options): |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 931 | if not options.hinting: |
Behdad Esfahbod | 6ec8854 | 2013-07-24 16:52:47 -0400 | [diff] [blame] | 932 | for v in self.glyphs.values (): |
| 933 | if hasattr (v, "data"): |
| 934 | v.dropInstructionsFast () |
| 935 | else: |
| 936 | v.program = fontTools.ttLib.tables.ttProgram.Program() |
| 937 | v.program.fromBytecode([]) |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 938 | return True |
| 939 | |
Behdad Esfahbod | 2b677c8 | 2013-07-23 13:37:13 -0400 | [diff] [blame] | 940 | @add_method(fontTools.ttLib.getTableClass('CFF ')) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 941 | def subset_glyphs (self, s): |
Behdad Esfahbod | 2b677c8 | 2013-07-23 13:37:13 -0400 | [diff] [blame] | 942 | assert 0, "unimplemented" |
| 943 | |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 944 | @add_method(fontTools.ttLib.getTableClass('cmap')) |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 945 | def closure_glyphs (self, s): |
| 946 | tables = [t for t in self.tables if t.platformID == 3 and t.platEncID in [1, 10]] |
| 947 | extra = [] |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 948 | for u in s.unicodes_requested: |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 949 | found = False |
| 950 | for table in tables: |
| 951 | if u in table.cmap: |
| 952 | extra.append (table.cmap[u]) |
| 953 | found = True |
| 954 | break |
| 955 | if not found: |
| 956 | s.log ("No glyph for Unicode value %s; skipping." % u) |
| 957 | return extra |
| 958 | |
| 959 | @add_method(fontTools.ttLib.getTableClass('cmap')) |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 960 | def prune_pre_subset (self, options): |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 961 | if not options.legacy_cmap: |
Behdad Esfahbod | de4a15b | 2013-07-23 13:05:42 -0400 | [diff] [blame] | 962 | # Drop non-Unicode / non-Symbol cmaps |
| 963 | self.tables = [t for t in self.tables if t.platformID == 3 and t.platEncID in [0, 1, 10]] |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 964 | if not options.symbol_cmap: |
Behdad Esfahbod | de4a15b | 2013-07-23 13:05:42 -0400 | [diff] [blame] | 965 | self.tables = [t for t in self.tables if t.platformID == 3 and t.platEncID in [1, 10]] |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 966 | # TODO Only keep one subtable? |
Behdad Esfahbod | abb50a1 | 2013-07-23 12:58:37 -0400 | [diff] [blame] | 967 | # For now, drop format=0 which can't be subset_glyphs easily? |
| 968 | self.tables = [t for t in self.tables if t.format != 0] |
| 969 | return bool (self.tables) |
| 970 | |
| 971 | @add_method(fontTools.ttLib.getTableClass('cmap')) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 972 | def subset_glyphs (self, s): |
Behdad Esfahbod | a6dbb7a | 2013-07-31 19:53:57 -0400 | [diff] [blame] | 973 | s.glyphs = s.glyphs_cmaped |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 974 | for t in self.tables: |
Behdad Esfahbod | 9453a36 | 2013-07-22 16:21:24 -0400 | [diff] [blame] | 975 | # For reasons I don't understand I need this here |
| 976 | # to force decompilation of the cmap format 14. |
| 977 | try: |
| 978 | getattr (t, "asdf") |
| 979 | except AttributeError: |
| 980 | pass |
Behdad Esfahbod | b13d790 | 2013-07-22 16:01:15 -0400 | [diff] [blame] | 981 | if t.format == 14: |
Behdad Esfahbod | 9453a36 | 2013-07-22 16:21:24 -0400 | [diff] [blame] | 982 | # XXX We drop all the default-UVS mappings (g==None) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 983 | t.uvsDict = {v:[(u,g) for (u,g) in l if g in s.glyphs] for (v,l) in t.uvsDict.items()} |
Behdad Esfahbod | b13d790 | 2013-07-22 16:01:15 -0400 | [diff] [blame] | 984 | t.uvsDict = {v:l for (v,l) in t.uvsDict.items() if l} |
| 985 | else: |
Behdad Esfahbod | c4eb3db | 2013-07-31 19:56:19 -0400 | [diff] [blame] | 986 | t.cmap = {u:g for (u,g) in t.cmap.items() if g in s.glyphs_requested or u in s.unicodes_requested} |
Behdad Esfahbod | b13d790 | 2013-07-22 16:01:15 -0400 | [diff] [blame] | 987 | self.tables = [t for t in self.tables if (t.cmap if t.format != 14 else t.uvsDict)] |
Behdad Esfahbod | 7e4bfc3 | 2013-07-22 18:47:32 -0400 | [diff] [blame] | 988 | # XXX Convert formats when needed |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 989 | return bool (self.tables) |
| 990 | |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 991 | @add_method(fontTools.ttLib.getTableClass('name')) |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 992 | def prune_pre_subset (self, options): |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 993 | if '*' not in options.name_IDs: |
| 994 | self.names = [n for n in self.names if n.nameID in options.name_IDs] |
| 995 | if not options.name_legacy: |
Behdad Esfahbod | 20faeb0 | 2013-07-23 13:19:03 -0400 | [diff] [blame] | 996 | self.names = [n for n in self.names if n.platformID == 3 and n.platEncID == 1] |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 997 | if '*' not in options.name_languages: |
| 998 | self.names = [n for n in self.names if n.langID in options.name_languages] |
Behdad Esfahbod | 20faeb0 | 2013-07-23 13:19:03 -0400 | [diff] [blame] | 999 | return True # Retain even if empty |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 1000 | |
Behdad Esfahbod | 8c646f6 | 2013-07-22 15:06:23 -0400 | [diff] [blame] | 1001 | |
Behdad Esfahbod | bc25f16 | 2013-07-23 12:56:54 -0400 | [diff] [blame] | 1002 | drop_tables_default = ['BASE', 'JSTF', 'DSIG', 'EBDT', 'EBLC', 'EBSC', 'PCLT', 'LTSH'] |
Behdad Esfahbod | 103a12f | 2013-07-23 15:08:39 -0400 | [diff] [blame] | 1003 | drop_tables_default += ['Feat', 'Glat', 'Gloc', 'Silf', 'Sill'] # Graphite |
Behdad Esfahbod | 38e852c | 2013-07-23 16:56:50 -0400 | [diff] [blame] | 1004 | drop_tables_default += ['CBLC', 'CBDT', 'sbix', 'COLR', 'CPAL'] # Color |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 1005 | no_subset_tables = ['gasp', 'head', 'hhea', 'maxp', 'vhea', 'OS/2', 'loca', 'name', 'cvt ', 'fpgm', 'prep'] |
Behdad Esfahbod | bc25f16 | 2013-07-23 12:56:54 -0400 | [diff] [blame] | 1006 | hinting_tables = ['cvt ', 'fpgm', 'prep', 'hdmx', 'VDMX'] |
Behdad Esfahbod | 29df046 | 2013-07-23 11:05:25 -0400 | [diff] [blame] | 1007 | |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 1008 | # Based on HarfBuzz shapers |
| 1009 | layout_features_dict = { |
| 1010 | # Default shaper |
| 1011 | 'common': ['ccmp', 'liga', 'locl', 'mark', 'mkmk', 'rlig'], |
| 1012 | 'horizontal': ['calt', 'clig', 'curs', 'kern', 'rclt'], |
| 1013 | 'vertical': ['valt', 'vert', 'vkrn', 'vpal', 'vrt2'], |
| 1014 | 'ltr': ['ltra', 'ltrm'], |
| 1015 | 'rtl': ['rtla', 'rtlm'], |
| 1016 | # Complex shapers |
Behdad Esfahbod | f36b5a9 | 2013-08-04 16:54:46 -0400 | [diff] [blame] | 1017 | 'arabic': ['init', 'medi', 'fina', 'isol', 'med2', 'fin2', 'fin3', 'cswh', 'mset'], |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 1018 | 'hangul': ['ljmo', 'vjmo', 'tjmo'], |
| 1019 | 'tibetal': ['abvs', 'blws', 'abvm', 'blwm'], |
| 1020 | 'indic': ['nukt', 'akhn', 'rphf', 'rkrf', 'pref', 'blwf', 'half', 'abvf', 'pstf', 'cfar', 'vatu', 'cjct', |
| 1021 | 'init', 'pres', 'abvs', 'blws', 'psts', 'haln', 'dist', 'abvm', 'blwm'], |
| 1022 | } |
| 1023 | layout_features_all = unique_sorted (sum (layout_features_dict.values (), [])) |
| 1024 | |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 1025 | # TODO OS/2 ulUnicodeRange / ulCodePageRange? |
Behdad Esfahbod | f71267b | 2013-07-23 12:59:13 -0400 | [diff] [blame] | 1026 | # TODO Drop unneeded GSUB/GPOS Script/LangSys entries |
Behdad Esfahbod | 398d389 | 2013-07-23 15:29:40 -0400 | [diff] [blame] | 1027 | # TODO Avoid recursing too much |
Behdad Esfahbod | e94aa0e | 2013-07-23 13:22:04 -0400 | [diff] [blame] | 1028 | # TODO Text direction considerations |
| 1029 | # TODO Text script / language considerations |
Behdad Esfahbod | b3ee60c | 2013-07-24 19:21:40 -0400 | [diff] [blame] | 1030 | # TODO Drop unknown tables? Using DefaultTable.prune? |
Behdad Esfahbod | 8c4f7cc | 2013-07-24 17:58:29 -0400 | [diff] [blame] | 1031 | # TODO Drop GPOS Device records if not hinting? |
Behdad Esfahbod | 56ebd04 | 2013-07-22 13:02:24 -0400 | [diff] [blame] | 1032 | |
Behdad Esfahbod | 8c486d8 | 2013-07-24 13:34:47 -0400 | [diff] [blame] | 1033 | |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 1034 | class Subsetter: |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1035 | |
| 1036 | class Options: |
| 1037 | drop_tables = drop_tables_default |
| 1038 | layout_features = layout_features_all |
| 1039 | hinting = False |
| 1040 | glyph_names = False |
| 1041 | legacy_cmap = False |
| 1042 | symbol_cmap = False |
| 1043 | name_IDs = [1, 2] # Family and Style |
| 1044 | name_legacy = False |
| 1045 | name_languages = [0x0409] # English |
| 1046 | mandatory_glyphs = True # First four for TrueType, .notdef for CFF |
| 1047 | recalc_bboxes = False # Slows us down |
| 1048 | |
| 1049 | def __init__ (self, **kwargs): |
| 1050 | |
| 1051 | self.set (**kwargs) |
| 1052 | |
| 1053 | def set (self, **kwargs): |
| 1054 | for k,v in kwargs.items (): |
| 1055 | if not hasattr (self, k): |
| 1056 | raise Exception ("Unknown option '%s'" % k) |
| 1057 | setattr (self, k, v) |
| 1058 | |
| 1059 | def parse_opts (self, argv, ignore_unknown=False): |
| 1060 | ret = [] |
| 1061 | opts = {} |
| 1062 | for a in argv: |
| 1063 | if not a.startswith ('--'): |
| 1064 | ret.append (a) |
| 1065 | continue |
| 1066 | a = a[2:] |
| 1067 | i = a.find ('=') |
| 1068 | if i == -1: |
| 1069 | if a.startswith ("no-"): |
| 1070 | k = a[3:] |
| 1071 | v = False |
| 1072 | else: |
| 1073 | k = a |
| 1074 | v = True |
| 1075 | else: |
| 1076 | k = a[:i] |
| 1077 | v = a[i+1:] |
| 1078 | k = k.replace ('-', '_') |
| 1079 | if not hasattr (self, k): |
| 1080 | if ignore_unknown: |
| 1081 | ret.append (a) |
| 1082 | continue |
| 1083 | else: |
| 1084 | raise Exception ("Unknown option '%s'" % a) |
| 1085 | |
| 1086 | ov = getattr (self, k) |
| 1087 | if isinstance (ov, bool): |
| 1088 | v = bool (v) |
| 1089 | elif isinstance (ov, int): |
| 1090 | v = int (v) |
| 1091 | elif isinstance (ov, list): |
| 1092 | v = v.split (',') |
| 1093 | v = [int (x, 0) if x[0] in range (10) else x for x in v] |
| 1094 | |
| 1095 | opts[k] = v |
| 1096 | self.set (**opts) |
| 1097 | |
| 1098 | return ret |
| 1099 | |
| 1100 | |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1101 | def __init__ (self, font=None, options=None, log=None): |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1102 | |
| 1103 | if isinstance (font, basestring): |
| 1104 | font = fontTools.ttx.TTFont (font) |
| 1105 | if not log: |
| 1106 | log = Logger() |
| 1107 | if not options: |
| 1108 | options = Options() |
| 1109 | |
Behdad Esfahbod | 88264a6 | 2013-07-31 14:45:13 -0400 | [diff] [blame] | 1110 | self.font = font |
| 1111 | self.options = options |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1112 | self.log = log |
Behdad Esfahbod | c4eb3db | 2013-07-31 19:56:19 -0400 | [diff] [blame] | 1113 | self.unicodes_requested = set () |
| 1114 | self.glyphs_requested = set () |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 1115 | |
Behdad Esfahbod | 618c086 | 2013-07-31 20:11:17 -0400 | [diff] [blame] | 1116 | def populate (self, glyphs=[], unicodes=[], text=""): |
Behdad Esfahbod | c4eb3db | 2013-07-31 19:56:19 -0400 | [diff] [blame] | 1117 | self.unicodes_requested.update (unicodes) |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1118 | if isinstance (text, str): |
Behdad Esfahbod | 618c086 | 2013-07-31 20:11:17 -0400 | [diff] [blame] | 1119 | text = text.decode ("utf8") |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1120 | for u in text: |
Behdad Esfahbod | 618c086 | 2013-07-31 20:11:17 -0400 | [diff] [blame] | 1121 | self.unicodes_requested.add (ord (u)) |
Behdad Esfahbod | c4eb3db | 2013-07-31 19:56:19 -0400 | [diff] [blame] | 1122 | self.glyphs_requested.update (glyphs) |
Behdad Esfahbod | 3d513b7 | 2013-07-31 14:11:40 -0400 | [diff] [blame] | 1123 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1124 | def pre_prune (self): |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1125 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1126 | for tag in self.font.keys(): |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1127 | if tag == 'GlyphOrder': continue |
| 1128 | |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1129 | if tag in self.options.drop_tables or \ |
| 1130 | (tag in hinting_tables and not self.options.hinting): |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1131 | self.log (tag, "dropped") |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1132 | del self.font[tag] |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1133 | continue |
| 1134 | |
| 1135 | clazz = fontTools.ttLib.getTableClass(tag) |
| 1136 | |
| 1137 | if hasattr (clazz, 'prune_pre_subset'): |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1138 | table = self.font[tag] |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1139 | retain = table.prune_pre_subset (self.options) |
| 1140 | self.log.lapse ("prune '%s'" % tag) |
| 1141 | if not retain: |
| 1142 | self.log (tag, "pruned to empty; dropped") |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1143 | del self.font[tag] |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1144 | continue |
| 1145 | else: |
| 1146 | self.log (tag, "pruned") |
| 1147 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1148 | def closure_glyphs (self): |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1149 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1150 | self.glyphs = self.glyphs_requested |
| 1151 | |
| 1152 | if 'cmap' in self.font: |
| 1153 | extra_glyphs = self.font['cmap'].closure_glyphs (self) |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1154 | self.glyph = self.glyphs.copy () |
| 1155 | self.glyphs.update (extra_glyphs) |
| 1156 | self.glyphs_cmaped = self.glyphs |
| 1157 | |
| 1158 | if self.options.mandatory_glyphs: |
| 1159 | self.glyphs = self.glyphs.copy () |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1160 | if 'glyf' in self.font: |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1161 | for i in range (4): |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1162 | self.glyphs.add (self.font.getGlyphName (i)) |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1163 | self.log ("Added first four glyphs to subset") |
| 1164 | else: |
| 1165 | self.glyphs.add ('.notdef') |
| 1166 | self.log ("Added .notdef glyph to subset") |
| 1167 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1168 | if 'GSUB' in self.font: |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1169 | self.log ("Closing glyph list over 'GSUB': %d glyphs before" % len (self.glyphs)) |
Behdad Esfahbod | f549784 | 2013-08-08 21:57:02 -0400 | [diff] [blame^] | 1170 | self.log.glyphs (self.glyphs, font=self.font) |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1171 | self.glyphs = set (self.font['GSUB'].closure_glyphs (self)) |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1172 | self.log ("Closed glyph list over 'GSUB': %d glyphs after" % len (self.glyphs)) |
Behdad Esfahbod | f549784 | 2013-08-08 21:57:02 -0400 | [diff] [blame^] | 1173 | self.log.glyphs (self.glyphs, font=self.font) |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1174 | self.log.lapse ("close glyph list over 'GSUB'") |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1175 | self.glyphs_gsubed = self.glyphs |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1176 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1177 | if 'glyf' in self.font: |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1178 | self.log ("Closing glyph list over 'glyf': %d glyphs before" % len (self.glyphs)) |
Behdad Esfahbod | f549784 | 2013-08-08 21:57:02 -0400 | [diff] [blame^] | 1179 | self.log.glyphs (self.glyphs, font=self.font) |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1180 | self.glyphs = set (self.font['glyf'].closure_glyphs (self)) |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1181 | self.log ("Closed glyph list over 'glyf': %d glyphs after" % len (self.glyphs)) |
Behdad Esfahbod | f549784 | 2013-08-08 21:57:02 -0400 | [diff] [blame^] | 1182 | self.log.glyphs (self.glyphs, font=self.font) |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1183 | self.log.lapse ("close glyph list over 'glyf'") |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1184 | self.glyphs_glyfed = self.glyphs |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1185 | |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1186 | self.glyphs_all = self.glyphs |
| 1187 | |
| 1188 | self.log ("Retaining %d glyphs: " % len (self.glyphs_all)) |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1189 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1190 | def subset_glyphs (self): |
| 1191 | for tag in self.font.keys(): |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1192 | if tag == 'GlyphOrder': continue |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1193 | clazz = fontTools.ttLib.getTableClass(tag) |
| 1194 | |
| 1195 | if tag in no_subset_tables: |
| 1196 | self.log (tag, "subsetting not needed") |
| 1197 | elif hasattr (clazz, 'subset_glyphs'): |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1198 | table = self.font[tag] |
Behdad Esfahbod | a6dbb7a | 2013-07-31 19:53:57 -0400 | [diff] [blame] | 1199 | self.glyphs = self.glyphs_all |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1200 | retain = table.subset_glyphs (self) |
| 1201 | self.log.lapse ("subset '%s'" % tag) |
| 1202 | if not retain: |
| 1203 | self.log (tag, "subsetted to empty; dropped") |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1204 | del self.font[tag] |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1205 | else: |
| 1206 | self.log (tag, "subsetted") |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1207 | else: |
| 1208 | self.log (tag, "NOT subset; don't know how to subset") |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1209 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1210 | glyphOrder = self.font.getGlyphOrder() |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1211 | glyphOrder = [g for g in glyphOrder if g in self.glyphs_all] |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1212 | self.font.setGlyphOrder (glyphOrder) |
| 1213 | self.font._buildReverseGlyphOrderDict () |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1214 | self.log.lapse ("subset GlyphOrder") |
| 1215 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1216 | def post_prune (self): |
| 1217 | for tag in self.font.keys(): |
Behdad Esfahbod | 2fb90e2 | 2013-07-31 20:04:08 -0400 | [diff] [blame] | 1218 | if tag == 'GlyphOrder': continue |
| 1219 | clazz = fontTools.ttLib.getTableClass(tag) |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1220 | if hasattr (clazz, 'prune_post_subset'): |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1221 | table = self.font[tag] |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1222 | retain = table.prune_post_subset (self.options) |
| 1223 | self.log.lapse ("prune '%s'" % tag) |
| 1224 | if not retain: |
| 1225 | self.log (tag, "pruned to empty; dropped") |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1226 | del self.font[tag] |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1227 | else: |
| 1228 | self.log (tag, "pruned") |
| 1229 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1230 | def subset (self, font): |
| 1231 | |
| 1232 | self.font = font |
Behdad Esfahbod | 756af49 | 2013-08-01 12:05:26 -0400 | [diff] [blame] | 1233 | |
Behdad Esfahbod | 98259f2 | 2013-07-31 20:16:24 -0400 | [diff] [blame] | 1234 | self.font.recalcBBoxes = self.options.recalc_bboxes |
| 1235 | |
| 1236 | self.pre_prune () |
| 1237 | self.closure_glyphs () |
| 1238 | self.subset_glyphs () |
| 1239 | self.post_prune () |
| 1240 | |
Behdad Esfahbod | 756af49 | 2013-08-01 12:05:26 -0400 | [diff] [blame] | 1241 | del self.font |
| 1242 | |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1243 | import sys, time |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1244 | |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1245 | class Logger: |
| 1246 | |
| 1247 | def __init__ (self, verbose=False, xml=False, timing=False): |
| 1248 | self.verbose = verbose |
| 1249 | self.xml = xml |
| 1250 | self.timing = timing |
| 1251 | self.last_time = self.start_time = time.time () |
| 1252 | |
| 1253 | def parse_opts (self, argv): |
| 1254 | argv = argv[:] |
| 1255 | for v in ['verbose', 'xml', 'timing']: |
| 1256 | if "--"+v in argv: |
| 1257 | setattr (self, v, True) |
| 1258 | argv.remove ("--"+v) |
| 1259 | return argv |
| 1260 | |
| 1261 | def __call__ (self, *things): |
| 1262 | if not self.verbose: |
| 1263 | return |
| 1264 | print ' '.join (str (x) for x in things) |
| 1265 | |
| 1266 | def lapse (self, *things): |
| 1267 | if not self.timing: |
| 1268 | return |
| 1269 | new_time = time.time () |
| 1270 | print "Took %0.3fs to %s" % (new_time - self.last_time, ' '.join (str (x) for x in things)) |
| 1271 | self.last_time = new_time |
| 1272 | |
Behdad Esfahbod | f549784 | 2013-08-08 21:57:02 -0400 | [diff] [blame^] | 1273 | def glyphs (self, glyphs, glyph_names=True, font=None): |
| 1274 | self ("Names: ", sorted (glyphs)) |
| 1275 | if font: |
| 1276 | glyphOrder = font.getGlyphOrder() |
| 1277 | self ("Gids : ", sorted (glyphOrder.index (g) for g in glyphs)) |
| 1278 | |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1279 | def font (self, font, file=sys.stdout): |
| 1280 | if not self.xml: |
| 1281 | return |
| 1282 | import xmlWriter, sys |
| 1283 | writer = xmlWriter.XMLWriter (file) |
| 1284 | font.disassembleInstructions = False # Work around ttx bug |
| 1285 | for tag in font.keys(): |
| 1286 | writer.begintag (tag) |
| 1287 | writer.newline () |
| 1288 | font[tag].toXML(writer, font) |
| 1289 | writer.endtag (tag) |
| 1290 | writer.newline () |
| 1291 | |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1292 | def main (args): |
Behdad Esfahbod | 610b055 | 2013-07-23 14:52:18 -0400 | [diff] [blame] | 1293 | |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1294 | log = Logger () |
| 1295 | args = log.parse_opts (args) |
Behdad Esfahbod | 4ae8171 | 2013-07-22 11:57:13 -0400 | [diff] [blame] | 1296 | |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1297 | options = Subsetter.Options () |
| 1298 | args = options.parse_opts (args) |
| 1299 | |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1300 | if len (args) < 2: |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1301 | import sys |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 1302 | print >>sys.stderr, "usage: pyotlss.py font-file glyph..." |
| 1303 | sys.exit (1) |
| 1304 | |
Behdad Esfahbod | df3d757 | 2013-07-31 15:03:43 -0400 | [diff] [blame] | 1305 | fontfile = args[0] |
Behdad Esfahbod | e7f5a89 | 2013-07-31 19:58:59 -0400 | [diff] [blame] | 1306 | args = args[1:] |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 1307 | |
Behdad Esfahbod | b3ee60c | 2013-07-24 19:21:40 -0400 | [diff] [blame] | 1308 | # TODO Option for ignoreDecompileErrors? |
Behdad Esfahbod | 88264a6 | 2013-07-31 14:45:13 -0400 | [diff] [blame] | 1309 | font = fontTools.ttx.TTFont (fontfile) |
Behdad Esfahbod | 063a2db | 2013-07-31 15:22:02 -0400 | [diff] [blame] | 1310 | s = Subsetter (font=font, options=options, log=log) |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1311 | log.lapse ("load font") |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 1312 | |
Behdad Esfahbod | 6df089a | 2013-07-31 19:27:14 -0400 | [diff] [blame] | 1313 | # Hack: |
| 1314 | # |
| 1315 | # If we don't need glyph names, change 'post' class to not try to |
| 1316 | # load them. It avoid lots of headache with broken fonts as well |
| 1317 | # as loading time. |
| 1318 | # |
| 1319 | # Ideally ttLib should provide a way to ask it to skip loading |
| 1320 | # glyph names. But it currently doesn't provide such a thing. |
| 1321 | # |
| 1322 | if not options.glyph_names \ |
Behdad Esfahbod | 9ae5d28 | 2013-08-08 21:18:17 -0400 | [diff] [blame] | 1323 | and all (any (g.startswith (p) for p in ['gid', 'glyph', 'uni', 'U+']) \ |
Behdad Esfahbod | e7f5a89 | 2013-07-31 19:58:59 -0400 | [diff] [blame] | 1324 | for g in args): |
Behdad Esfahbod | 6df089a | 2013-07-31 19:27:14 -0400 | [diff] [blame] | 1325 | post = fontTools.ttLib.getTableClass('post') |
| 1326 | saved = post.decode_format_2_0 |
| 1327 | post.decode_format_2_0 = post.decode_format_3_0 |
| 1328 | f = font['post'] |
| 1329 | if f.formatType == 2.0: |
| 1330 | f.formatType = 3.0 |
| 1331 | post.decode_format_2_0 = saved |
| 1332 | del post, saved, f |
| 1333 | |
| 1334 | names = font.getGlyphNames() |
| 1335 | log.lapse ("loading glyph names") |
Behdad Esfahbod | e7f5a89 | 2013-07-31 19:58:59 -0400 | [diff] [blame] | 1336 | |
| 1337 | glyphs = [] |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1338 | unicodes = [] |
Behdad Esfahbod | e7f5a89 | 2013-07-31 19:58:59 -0400 | [diff] [blame] | 1339 | for g in args: |
Behdad Esfahbod | 6df089a | 2013-07-31 19:27:14 -0400 | [diff] [blame] | 1340 | if g in names: |
Behdad Esfahbod | e7f5a89 | 2013-07-31 19:58:59 -0400 | [diff] [blame] | 1341 | glyphs.append (g) |
Behdad Esfahbod | 6df089a | 2013-07-31 19:27:14 -0400 | [diff] [blame] | 1342 | continue |
Behdad Esfahbod | 9ae5d28 | 2013-08-08 21:18:17 -0400 | [diff] [blame] | 1343 | if g.startswith ('uni') or g.startswith ('U+'): |
| 1344 | if g.startswith ('uni') and len (g) > 3: |
| 1345 | g = g[3:] |
| 1346 | elif g.startswith ('U+') and len (g) > 2: |
| 1347 | g = g[2:] |
| 1348 | u = int (g, 16) |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1349 | unicodes.append (u) |
Behdad Esfahbod | 6df089a | 2013-07-31 19:27:14 -0400 | [diff] [blame] | 1350 | continue |
| 1351 | if g.startswith ('gid') or g.startswith ('glyph'): |
| 1352 | if g.startswith ('gid') and len (g) > 3: |
| 1353 | g = g[3:] |
| 1354 | elif g.startswith ('glyph') and len (g) > 5: |
| 1355 | g = g[5:] |
| 1356 | try: |
Behdad Esfahbod | e7f5a89 | 2013-07-31 19:58:59 -0400 | [diff] [blame] | 1357 | glyphs.append (font.getGlyphName (int (g), requireReal=1)) |
Behdad Esfahbod | 6df089a | 2013-07-31 19:27:14 -0400 | [diff] [blame] | 1358 | except ValueError: |
| 1359 | raise Exception ("Invalid glyph identifier %s" % g) |
| 1360 | continue |
| 1361 | raise Exception ("Invalid glyph identifier %s" % g) |
Behdad Esfahbod | 6df089a | 2013-07-31 19:27:14 -0400 | [diff] [blame] | 1362 | log.lapse ("compile glyph list") |
Behdad Esfahbod | e7f5a89 | 2013-07-31 19:58:59 -0400 | [diff] [blame] | 1363 | log ("Unicodes:", unicodes) |
Behdad Esfahbod | 6df089a | 2013-07-31 19:27:14 -0400 | [diff] [blame] | 1364 | log ("Glyphs:", glyphs) |
| 1365 | |
Behdad Esfahbod | 8c8ff45 | 2013-07-31 19:47:37 -0400 | [diff] [blame] | 1366 | s.populate (glyphs=glyphs, unicodes=unicodes) |
| 1367 | s.subset (font) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 1368 | |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 1369 | font.save (fontfile + '.subset') |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1370 | log.lapse ("compile and save font") |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 1371 | |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1372 | log.last_time = s.log.start_time |
| 1373 | log.lapse ("make one with everything (TOTAL TIME)") |
Behdad Esfahbod | de71dca | 2013-07-24 12:40:54 -0400 | [diff] [blame] | 1374 | |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1375 | log.font (font) |
Behdad Esfahbod | 8c486d8 | 2013-07-24 13:34:47 -0400 | [diff] [blame] | 1376 | |
| 1377 | if __name__ == '__main__': |
Behdad Esfahbod | 97e17b8 | 2013-07-31 15:59:21 -0400 | [diff] [blame] | 1378 | import sys |
| 1379 | main (sys.argv[1:]) |