1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
--
-- This is file `fontspec.lua',
-- generated with the docstrip utility.
--
-- The original source files were:
--
-- fontspec.dtx (with options: `lua')
--
-- _________________________________________
-- The fontspec package for XeLaTeX/LuaLaTeX
-- (C) 2004--2013 Will Robertson and Khaled Hosny
--
-- License information appended.
--
--
fontspec = fontspec or {}
local fontspec = fontspec
fontspec.module = {
name = "fontspec",
version = 2.4,
date = "2013/05/12",
description = "Advanced font selection for LuaLaTeX.",
author = "Khaled Hosny, Philipp Gesang",
copyright = "Khaled Hosny, Philipp Gesang",
license = "LPPL"
}
local err, warn, info, log = luatexbase.provides_module(fontspec.module)
fontspec.log = log
fontspec.warning = warn
fontspec.error = err
function fontspec.sprint (...)
tex.sprint(luatexbase.catcodetables['latex-package'], ...)
end
local luaotfload_aux
if luaotfload and luaotfload.aux and luaotfload.aux.slot_of_name then
luaotfload_aux = true
else
luaotfload_aux = false
end
local check_script, check_language, check_feature, ids
if luaotfload_aux then
check_script = luaotfload.aux.provides_script
check_language = luaotfload.aux.provides_language
check_feature = luaotfload.aux.provides_feature
else
ids = fonts.identifiers or fonts.ids or fonts.hashes.identifiers -- first two are for backward compatibility
function check_script(id, script)
local s = string.lower(script)
if id and id > 0 then
local otfdata = ids[id].shared.rawdata
if otfdata then
local features = otfdata.resources.features
for i,_ in pairs(features) do
for j,_ in pairs(features[i]) do
if features[i][j][s] then
fontspec.log("script '%s' exists in font '%s'",
script, ids[id].fullname)
return true
end
end
end
end
end
end
function check_language(id, script, language)
local s = string.lower(script)
local l = string.lower(language)
if id and id > 0 then
local otfdata = ids[id].shared.rawdata
if otfdata then
local features = otfdata.resources.features
for i,_ in pairs(features) do
for j,_ in pairs(features[i]) do
if features[i][j][s] and features[i][j][s][l] then
fontspec.log("language '%s' for script '%s' exists in font '%s'",
language, script, ids[id].fullname)
return true
end
end
end
end
end
end
function check_feature(id, script, language, feature)
local s = string.lower(script)
local l = string.lower(language)
local f = string.lower(feature:gsub("^[+-]", ""):gsub("=.*$", ""))
if id and id > 0 then
local otfdata = ids[id].shared.rawdata
if otfdata then
local features = otfdata.resources.features
for i,_ in pairs(features) do
if features[i][f] and features[i][f][s] then
if features[i][f][s][l] == true then
fontspec.log("feature '%s' for language '%s' and script '%s' exists in font '%s'",
feature, language, script, ids[id].fullname)
return true
end
end
end
end
end
end
end
local function tempswatrue() fontspec.sprint([[\@tempswatrue]]) end
local function tempswafalse() fontspec.sprint([[\@tempswafalse]]) end
function fontspec.check_ot_script(fnt, script)
if check_script(font.id(fnt), script) then
tempswatrue()
else
tempswafalse()
end
end
function fontspec.check_ot_lang(fnt, lang, script)
if check_language(font.id(fnt), script, lang) then
tempswatrue()
else
tempswafalse()
end
end
function fontspec.check_ot_feat(fnt, feat, lang, script)
for _, f in ipairs { "+trep", "+tlig", "+anum" } do
if feat == f then
tempswatrue()
return
end
end
if check_feature(font.id(fnt), script, lang, feat) then
tempswatrue()
else
tempswafalse()
end
end
local get_math_dimension
if luaotfload_aux then
get_math_dimension = luaotfload.aux.get_math_dimension
else
get_math_dimension = function(fnt, str)
local mathdimens = ids[font.id(fnt)].MathConstants
if mathdimens then
return mathdimens[str]
else
return nil
end
end
end
function fontspec.mathfontdimen(fnt, str)
local mathdimens = get_math_dimension(fnt, str)
if mathdimens then
fontspec.sprint(mathdimens)
fontspec.sprint("sp")
else
fontspec.sprint("0pt")
end
end
if not luaotfload_aux then
local function set_capheight(fontdata)
local capheight
local shared = fontdata.shared
if shared then
local metadata
local units_per_em
local os2_capheight
local size = fontdata.size or fontdata.parameters.size
if shared.rawdata then --- new otfl
metadata = shared.rawdata.metadata
units_per_em = shared.rawdata.metadata.units_per_em
os2_capheight = metadata.pfminfo.os2_capheight
else --- legacy
metadata = shared.otfdata.metadata
units_per_em = fontdata.units_per_em or fontdata.units
or fontdata.parameters.units
os2_capheight = shared.otfdata.pfminfo.os2_capheight
end
if os2_capheight > 0 then
capheight = os2_capheight / units_per_em * size
else
local X8 = string.byte"X"
if fontdata.characters[X8] then
capheight = fontdata.characters[X8].height
else
capheight = metadata.ascent / units_per_em * size
end
end
else
local X8 = string.byte"X"
if fontdata.characters[X8] then
capheight = fontdata.characters[X8].height
end
end
if capheight then
fontdata.parameters[8] = capheight
end
end
luatexbase.add_to_callback("luaotfload.patch_font", set_capheight, "fontspec.set_capheight")
end
--
-- Copyright 2004--2013 Will Robertson <wspr81@gmail.com>
-- Copyright 2009--2013 Khaled Hosny <khaledhosny@eglug.org>
--
-- Distributable under the LaTeX Project Public License,
-- version 1.3c or higher (your choice). The latest version of
-- this license is at: http://www.latex-project.org/lppl.txt
--
-- This work is "author-maintained" by Will Robertson.
--
-- This work consists of this file fontspec.dtx
-- and the derived files fontspec.sty,
-- fontspec.lua,
-- fontspec.cfg,
-- fontspec-xetex.tex,
-- fontspec-luatex.tex,
-- and fontspec.pdf.
--
--
-- End of file `fontspec.lua'.
|