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
231
232
233
234
235
236
237
238
239
240
|
if not modules then modules = { } end modules ['data-ini'] = {
version = 1.001,
comment = "companion to luat-lib.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
local gsub, find, gmatch, char = string.gsub, string.find, string.gmatch, string.char
local concat = table.concat
local next, type = next, type
local filedirname, filebasename, fileextname, filejoin = file.dirname, file.basename, file.extname, file.join
local trace_locating = false trackers.register("resolvers.locating", function(v) trace_locating = v end)
local trace_detail = false trackers.register("resolvers.details", function(v) trace_detail = v end)
local trace_expansions = false trackers.register("resolvers.expansions", function(v) trace_expansions = v end)
local report_initialization = logs.reporter("resolvers","initialization")
local ostype, osname, ossetenv, osgetenv = os.type, os.name, os.setenv, os.getenv
-- The code here used to be part of a data-res but for convenience
-- we now split it over multiple files. As this file is now the
-- starting point we introduce resolvers here.
resolvers = resolvers or { }
local resolvers = resolvers
-- We don't want the kpse library to kick in. Also, we want to be able to
-- execute programs. Control over execution is implemented later.
texconfig.kpse_init = false
texconfig.shell_escape = 't'
if kpse and kpse.default_texmfcnf then
local default_texmfcnf = kpse.default_texmfcnf()
-- looks more like context:
default_texmfcnf = gsub(default_texmfcnf,"$SELFAUTOLOC","selfautoloc:")
default_texmfcnf = gsub(default_texmfcnf,"$SELFAUTODIR","selfautodir:")
default_texmfcnf = gsub(default_texmfcnf,"$SELFAUTOPARENT","selfautoparent:")
default_texmfcnf = gsub(default_texmfcnf,"$HOME","home:")
--
environment.default_texmfcnf = default_texmfcnf
end
kpse = { original = kpse }
setmetatable(kpse, {
__index = function(kp,name)
report_initialization("fatal error: kpse library is accessed (key: %s)",name)
os.exit()
end
} )
-- First we check a couple of environment variables. Some might be
-- set already but we need then later on. We start with the system
-- font path.
do
local osfontdir = osgetenv("OSFONTDIR")
if osfontdir and osfontdir ~= "" then
-- ok
elseif osname == "windows" then
ossetenv("OSFONTDIR","c:/windows/fonts//")
elseif osname == "macosx" then
ossetenv("OSFONTDIR","$HOME/Library/Fonts//;/Library/Fonts//;/System/Library/Fonts//")
end
end
-- Next comes the user's home path. We need this as later on we have
-- to replace ~ with its value.
do
local homedir = osgetenv(ostype == "windows" and 'USERPROFILE' or 'HOME') or ''
if not homedir or homedir == "" then
homedir = char(127) -- we need a value, later we wil trigger on it
end
homedir = file.collapsepath(homedir)
ossetenv("HOME", homedir) -- can be used in unix cnf files
ossetenv("USERPROFILE",homedir) -- can be used in windows cnf files
environment.homedir = homedir
end
-- The following code sets the name of the own binary and its
-- path. This is fallback code as we have os.selfdir now.
do
local args = environment.originalarguments or arg -- this needs a cleanup
local ownbin = environment.ownbin or args[-2] or arg[-2] or args[-1] or arg[-1] or arg[0] or "luatex"
local ownpath = environment.ownpath or os.selfdir
ownbin = file.collapsepath(ownbin)
ownpath = file.collapsepath(ownpath)
if not ownpath or ownpath == "" or ownpath == "unset" then
ownpath = args[-1] or arg[-1]
ownpath = ownpath and filedirname(gsub(ownpath,"\\","/"))
if not ownpath or ownpath == "" then
ownpath = args[-0] or arg[-0]
ownpath = ownpath and filedirname(gsub(ownpath,"\\","/"))
end
local binary = ownbin
if not ownpath or ownpath == "" then
ownpath = ownpath and filedirname(binary)
end
if not ownpath or ownpath == "" then
if os.binsuffix ~= "" then
binary = file.replacesuffix(binary,os.binsuffix)
end
local path = osgetenv("PATH")
if path then
for p in gmatch(path,"[^"..io.pathseparator.."]+") do
local b = filejoin(p,binary)
if lfs.isfile(b) then
-- we assume that after changing to the path the currentdir function
-- resolves to the real location and use this side effect here; this
-- trick is needed because on the mac installations use symlinks in the
-- path instead of real locations
local olddir = lfs.currentdir()
if lfs.chdir(p) then
local pp = lfs.currentdir()
if trace_locating and p ~= pp then
report_initialization("following symlink '%s' to '%s'",p,pp)
end
ownpath = pp
lfs.chdir(olddir)
else
if trace_locating then
report_initialization("unable to check path '%s'",p)
end
ownpath = p
end
break
end
end
end
end
if not ownpath or ownpath == "" then
ownpath = "."
report_initialization("forcing fallback ownpath .")
elseif trace_locating then
report_initialization("using ownpath '%s'",ownpath)
end
end
environment.ownbin = ownbin
environment.ownpath = ownpath
end
resolvers.ownpath = environment.ownpath
function resolvers.getownpath()
return environment.ownpath
end
-- The self variables permit us to use only a few (or even no)
-- environment variables.
do
local ownpath = environment.ownpath or dir.current()
if ownpath then
ossetenv('SELFAUTOLOC', file.collapsepath(ownpath))
ossetenv('SELFAUTODIR', file.collapsepath(ownpath .. "/.."))
ossetenv('SELFAUTOPARENT', file.collapsepath(ownpath .. "/../.."))
else
report_initialization("error: unable to locate ownpath")
os.exit()
end
end
-- The running os:
-- todo: check is context sits here os.platform is more trustworthy
-- that the bin check as mtx-update runs from another path
local texos = environment.texos or osgetenv("TEXOS")
local texmfos = environment.texmfos or osgetenv('SELFAUTODIR')
if not texos or texos == "" then
texos = file.basename(texmfos)
end
ossetenv('TEXMFOS', texmfos) -- full bin path
ossetenv('TEXOS', texos) -- partial bin parent
ossetenv('SELFAUTOSYSTEM',os.platform) -- bonus
environment.texos = texos
environment.texmfos = texmfos
-- The current root:
local texroot = environment.texroot or osgetenv("TEXROOT")
if not texroot or texroot == "" then
texroot = osgetenv('SELFAUTOPARENT')
ossetenv('TEXROOT',texroot)
end
environment.texroot = file.collapsepath(texroot)
-- Tracing. Todo ...
function resolvers.settrace(n) -- no longer number but: 'locating' or 'detail'
if n then
trackers.disable("resolvers.*")
trackers.enable("resolvers."..n)
end
end
resolvers.settrace(osgetenv("MTX_INPUT_TRACE"))
-- todo:
-- if profiler and osgetenv("MTX_PROFILE_RUN") == "YES" then
-- profiler.start("luatex-profile.log")
-- end
-- a forward definition
if not resolvers.resolve then
function resolvers.resolve (s) return s end
function resolvers.unresolve(s) return s end
function resolvers.repath (s) return s end
end
|
