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
|
if not modules then modules = { } end modules ['back-ini'] = {
version = 1.001,
comment = "companion to back-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- I need to check what is actually needed, maybe some can become
-- locals.
backends = backends or { }
local backends = backends
local trace_backend = false trackers.register("backend.initializers", function(v) trace_finalizers = v end)
local report_backends = logs.new("backends")
local function nothing() return nil end
backends.nothing = nothing
backends.nodeinjections = {
rgbcolor = nothing,
cmykcolor = nothing,
graycolor = nothing,
spotcolor = nothing,
transparency = nothing,
overprint = nothing,
knockout = nothing,
positive = nothing,
negative = nothing,
effect = nothing,
startlayer = nothing,
stoplayer = nothing,
switchlayer = nothing,
reference = nothing,
destination = nothing,
addtags = nothing,
insertu3d = nothing,
insertswf = nothing,
insertmovie = nothing,
insertsound = nothing,
}
backends.codeinjections = {
prerollreference = nothing,
presetsymbol = nothing,
presetsymbollist = nothing,
registersymbol = nothing,
registeredsymbol = nothing,
registercomment = nothing,
embedfile = nothing,
attachfile = nothing,
attachmentid = nothing,
adddocumentinfo = nothing,
setupidentity = nothing,
setupcanvas = nothing,
setpagetransition = nothing,
defineviewerlayer = nothing,
addbookmarks = nothing,
addtransparencygroup = nothing,
typesetfield = nothing,
doiffieldelse = nothing,
doiffieldgroupelse = nothing,
doiffieldsetelse = nothing,
definefield = nothing,
clonefield = nothing,
definefieldset = nothing,
setfieldcalculationset = nothing,
getfieldgroup = nothing,
getfieldset = nothing,
setformsmethod = nothing,
getdefaultfieldvalue = nothing,
flushpageactions = nothing,
flushdocumentactions = nothing,
insertrenderingwindow = nothing,
processrendering = nothing,
setfigurecolorspace = nothing,
setfigurealternative = nothing,
enabletags = nothing,
mergereferences = nothing,
mergeviewerlayers = nothing,
setformat = nothing,
getformatoption = nothing,
supportedformats = nothing,
-- called in tex
finalizepage = nothing, -- will go when we have a hook at the lua end
finishreference = nothing,
}
backends.registrations = {
grayspotcolor = nothing,
rgbspotcolor = nothing,
cmykspotcolor = nothing,
grayindexcolor = nothing,
rgbindexcolor = nothing,
cmykindexcolor = nothing,
spotcolorname = nothing,
transparency = nothing,
}
local comment = { "comment", "" }
backends.tables = {
vfspecials = {
red = comment,
green = comment,
blue = comment,
black = comment,
startslant = comment,
stopslant = comment,
}
}
backends.current = "unknown"
function backends.install(what)
if type(what) == "string" then
local backend = backends[what]
if backend then
if trace_backend then
report_backends("initializing backend %s (%s)",what,backend.comment or "no comment")
end
backends.current = what
for _, category in next, { "nodeinjections", "codeinjections", "registrations", "tables" } do
local plugin = backend[category]
local whereto = backends[category]
if plugin then
for name, meaning in next, whereto do
if plugin[name] then
whereto[name] = plugin[name]
-- report_backends("installing function %s in category %s of %s",name,category,what)
elseif trace_backend then
report_backends("no function %s in category %s of %s",name,category,what)
end
end
elseif trace_backend then
report_backends("no category %s in %s",category,what)
end
-- extra checks
for k, v in next, whereto do
if not plugin[k] then
report_backends("entry %s in %s is not set",k,category)
end
end
for k, v in next, plugin do
if not whereto[k] then
report_backends("entry %s in %s is not used",k,category)
end
end
end
elseif trace_backend then
report_backends("no backend named %s",what)
end
end
end
statistics.register("used backend", function()
local bc = backends.current
if bc ~= "unknown" then
return string.format("%s (%s)",bc,backends[bc].comment or "no comment")
else
return nil
end
end)
|