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
226
227
228
229
230
|
if not modules then modules = { } end modules ['font-xtx'] = {
version = 1.001,
comment = "companion to font-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local texsprint, count = tex.sprint, tex.count
local format, concat, gmatch, match, find, lower = string.format, table.concat, string.gmatch, string.match, string.find, string.lower
local tostring, next = tostring, next
local lpegmatch = lpeg.match
local trace_defining = false trackers.register("fonts.defining", function(v) trace_defining = v end)
--[[ldx--
<p>Choosing a font by name and specififying its size is only part of the
game. In order to prevent complex commands, <l n='xetex'/> introduced
a method to pass feature information as part of the font name. At the
risk of introducing nasty parsing and compatinility problems, this
syntax was expanded over time.</p>
<p>For the sake of users who have defined fonts using that syntax, we
will support it, but we will provide additional methods as well.
Normally users will not use this direct way, but use a more abstract
interface.</p>
<p>The next one is the official one. However, in the plain
variant we need to support the crappy [] specification as
well and that does not work too well with the general design
of the specifier.</p>
--ldx]]--
--~ function fonts.define.specify.colonized(specification) -- xetex mode
--~ local list = { }
--~ if specification.detail and specification.detail ~= "" then
--~ for v in gmatch(specification.detail,"%s*([^;]+)%s*") do
--~ local a, b = match(v,"^(%S*)%s*=%s*(%S*)$")
--~ if a and b then
--~ list[a] = b:is_boolean()
--~ if type(list[a]) == "nil" then
--~ list[a] = b
--~ end
--~ else
--~ local a, b = match(v,"^([%+%-]?)%s*(%S+)$")
--~ if a and b then
--~ list[b] = a ~= "-"
--~ end
--~ end
--~ end
--~ end
--~ specification.features.normal = list
--~ return specification
--~ end
--~ check("oeps/BI:+a;-b;c=d")
--~ check("[oeps]/BI:+a;-b;c=d")
--~ check("file:oeps/BI:+a;-b;c=d")
--~ check("name:oeps/BI:+a;-b;c=d")
local list = { }
fonts.define.specify.colonized_default_lookup = "file"
local function isstyle(s)
local style = string.lower(s):split("/")
for _,v in ipairs(style) do
if v == "b" then
list.style = "bold"
elseif v == "i" then
list.style = "italic"
elseif v == "bi" or v == "ib" then
list.style = "bolditalic"
elseif v:find("^s=") then
list.optsize = v:split("=")[2]
elseif v == "aat" or v == "icu" or v == "gr" then
logs.report("load font", "unsupported font option: %s", v)
elseif not v:is_empty() then
list.style = v:gsub("[^%a%d]", "")
end
end
end
fonts = fonts or { }
fonts.otf = fonts.otf or { }
local otf = fonts.otf
otf.tables = otf.tables or { }
otf.tables.defaults = {
dflt = {
"ccmp", "locl", "rlig", "liga", "clig",
"kern", "mark", "mkmk",
},
arab = {
"ccmp", "locl", "isol", "fina", "fin2",
"fin3", "medi", "med2", "init", "rlig",
"calt", "liga", "cswh", "mset", "curs",
"kern", "mark", "mkmk",
},
deva = {
"ccmp", "locl", "init", "nukt", "akhn",
"rphf", "blwf", "half", "pstf", "vatu",
"pres", "blws", "abvs", "psts", "haln",
"calt", "blwm", "abvm", "dist", "kern",
"mark", "mkmk",
},
khmr = {
"ccmp", "locl", "pref", "blwf", "abvf",
"pstf", "pres", "blws", "abvs", "psts",
"clig", "calt", "blwm", "abvm", "dist",
"kern", "mark", "mkmk",
},
thai = {
"ccmp", "locl", "liga", "kern", "mark",
"mkmk",
},
hang = {
"ccmp", "ljmo", "vjmo", "tjmo",
},
}
otf.tables.defaults.beng = otf.tables.defaults.deva
otf.tables.defaults.guru = otf.tables.defaults.deva
otf.tables.defaults.gujr = otf.tables.defaults.deva
otf.tables.defaults.orya = otf.tables.defaults.deva
otf.tables.defaults.taml = otf.tables.defaults.deva
otf.tables.defaults.telu = otf.tables.defaults.deva
otf.tables.defaults.knda = otf.tables.defaults.deva
otf.tables.defaults.mlym = otf.tables.defaults.deva
otf.tables.defaults.sinh = otf.tables.defaults.deva
otf.tables.defaults.syrc = otf.tables.defaults.arab
otf.tables.defaults.mong = otf.tables.defaults.arab
otf.tables.defaults.nko = otf.tables.defaults.arab
otf.tables.defaults.tibt = otf.tables.defaults.khmr
otf.tables.defaults.lao = otf.tables.defaults.thai
local function parse_script(script)
if otf.tables.scripts[script] then
local dflt
if otf.tables.defaults[script] then
logs.report("load font", "auto-selecting default features for script: %s", script)
dflt = otf.tables.defaults[script]
else
logs.report("load font", "auto-selecting default features for script: dflt (was %s)", script)
dflt = otf.tables.defaults["dflt"]
end
for _,v in next, dflt do
list[v] = "yes"
end
else
logs.report("load font", "unknown script: %s", script)
end
end
local function issome () list.lookup = fonts.define.specify.colonized_default_lookup end
local function isfile () list.lookup = 'file' end
local function isname () list.lookup = 'name' end
local function thename(s) list.name = s end
local function issub (v) list.sub = v end
local function iskey (k,v)
if k == "script" then
parse_script(v)
end
list[k] = v
end
local function istrue (s) list[s] = true end
local function isfalse(s) list[s] = false end
local spaces = lpeg.P(" ")^0
-- ER: now accepting names like C:/program files/texlive/2009/...
local namespec = (lpeg.R("az", "AZ") * lpeg.P(":"))^-1 * (1-lpeg.S("/:("))^1 -- was: (1-lpeg.S("/: ("))^0
local crapspec = spaces * lpeg.P("/") * (((1-lpeg.P(":"))^0)/isstyle) * spaces
-- ER: can't understand why the 'file:' thing doesn't work with fontnames starting by c:...
local filename = (lpeg.P("file:")/isfile * (namespec/thename)) + (lpeg.P("[") * lpeg.P(true)/isname * (((1-lpeg.P("]"))^0)/thename) * lpeg.P("]"))
local fontname = (lpeg.P("name:")/isname * (namespec/thename)) + lpeg.P(true)/issome * (namespec/thename)
local sometext = (lpeg.R("az","AZ","09") + lpeg.S("+-."))^1
local truevalue = lpeg.P("+") * spaces * (sometext/istrue)
local falsevalue = lpeg.P("-") * spaces * (sometext/isfalse)
local keyvalue = (lpeg.C(sometext) * spaces * lpeg.P("=") * spaces * lpeg.C(sometext))/iskey
local somevalue = sometext/istrue
local subvalue = lpeg.P("(") * (lpeg.C(lpeg.P(1-lpeg.S("()"))^1)/issub) * lpeg.P(")") -- for Kim
local option = spaces * (keyvalue + falsevalue + truevalue + somevalue) * spaces
local options = lpeg.P(":") * spaces * (lpeg.P(";")^0 * option)^0
local pattern = (filename + fontname) * subvalue^0 * crapspec^0 * options^0
local normalize_meanings = fonts.otf.meanings.normalize
function fonts.define.specify.colonized(specification) -- xetex mode
list = { }
lpegmatch(pattern,specification.specification)
if list.style then
specification.style = list.style
list.style = nil
end
if list.optsize then
specification.optsize = list.optsize
list.optsize = nil
end
if list.name then
if resolvers.find_file(list.name, "tfm") then
list.lookup = "file"
list.name = list.name .. ".tfm"
elseif resolvers.find_file(list.name, "ofm") then
list.lookup = "file"
list.name = list.name .. ".ofm"
end
specification.name = list.name
list.name = nil
end
if list.lookup then
specification.lookup = list.lookup
list.lookup = nil
end
if list.sub then
specification.sub = list.sub
list.sub = nil
end
-- specification.features.normal = list
specification.features.normal = normalize_meanings(list)
return specification
end
fonts.define.register_split(":", fonts.define.specify.colonized)
|
