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
|
-- filename : luat-env.lua
-- comment : companion to luat-env.tex
-- author : Hans Hagen, PRAGMA-ADE, Hasselt NL
-- copyright: PRAGMA ADE / ConTeXt Development Team
-- license : see context related readme files
--~ do
--~ local normal_require = require
--~ local find_lua_file = find_lua_file or kpse.find_file -- you can predefine one
--~ function require(modname,luctoo)
--~ local file, longfile
--~ if luctoo then
--~ file = modname .. '.luc';
--~ longfile = find_lua_file(file)
--~ end
--~ if not longfile then
--~ file = modname .. '.lua';
--~ longfile = find_lua_file(file)
--~ end
--~ if longfile then
--~ local dir = longfile:match("^(.+[/\\]).-$")
--~ local pth = package.path:gsub("\\","/")
--~ dir = dir:gsub("\\","/")
--~ if pth:find(dir) then
--~ package.path = pth -- nicely sanitized
--~ else
--~ package.path = pth .. ';' .. dir .. '?.lua' -- dir has trailing /
--~ end
--~ normal_require(modname)
--~ end
--~ end
--~ end
-- here we don't assume any extra libraries
if not versions then versions = { } end versions['luat-env'] = 1.001
-- environment
if not environment then environment = { } end
environment.useluc = false -- for testing
--~ environment.silent = true -- for testing
if environment.silent == nil then environment.silent = false end
if environment.useluc == nil then environment.useluc = true end
-- kpse is overloaded by this time
if environment.formatname == nil then environment.formatname = tex.formatname end
if environment.formatpath == nil then environment.formatpath = kpse.find_file(tex.formatname,"fmt") or "." end
if environment.jobname == nil then environment.jobname = tex.jobname end
if environment.progname == nil then environment.progname = os.getenv("progname") or "luatex" end
if environment.engine == nil then environment.engine = os.getenv("engine") or "context" end
if environment.enginepath == nil then environment.enginepath = os.getenv("SELFAUTOLOC") or "." end
if environment.initex == nil then environment.initex = tex.formatname == "" end
environment.formatpath = string.gsub(environment.formatpath:gsub("\\","/"),"/([^/]-)$","")
environment.enginepath = string.gsub(environment.enginepath:gsub("\\","/"),"/([^/]-)$","")
if environment.formatname == "" then environment.formatpath = "cont-en" end
if environment.formatpath == "" then environment.formatpath = '.' end
if environment.enginepath == "" then environment.enginepath = '.' end
if environment.version == nil then environment.version = "unknown" end
function environment.get(name)
return os.getenv(name) or ""
end
function environment.cleanname(filename)
if filename and filename ~= "" then
return filename:gsub( "\\", "/")
else -- leave nil and empty untouched
return filename
end
end
function environment.texfile(filename)
return environment.cleanname(input.find_file(texmf.instance,filename,'tex'))
end
function environment.ctxfile(filename)
return environment.cleanname(input.find_file(texmf.instance,filename,'tex'))
end
function environment.luafile(filename)
return environment.cleanname(input.find_file(texmf.instance,filename,'tex') or input.find_file(texmf.instance,filename,'texmfscripts'))
end
function environment.showmessage(...) -- todo, cleaner
if not environment.silent then
if input and input.report then
input.report(table.concat({...}," "))
elseif texio and texio.write_nl then
texio.write_nl("[[" .. table.concat({...}," ") .. "]]")
else
print("[[" .. table.concat({...}," ") .. "]]")
end
end
end
if not environment.jobname then environment.jobname = "unknown" end
function environment.setlucpath()
if environment.initex then
environment.lucpath = nil
else
environment.lucpath = environment.formatpath .. "/lua/" .. environment.progname
end
end
function environment.luafilechunk(filename)
local filename = filename:gsub("%.%a+$", "") .. ".lua"
local fullname = environment.luafile(filename)
if fullname and fullname ~= "" then
environment.showmessage("loading file", fullname)
return loadfile(fullname)
else
environment.showmessage("unknown file", filename)
return nil
end
end
-- the next ones can use the previous ones
function environment.loadluafile(filename,register)
filename = filename:gsub("%.%a+$", "") .. ".lua"
local fullname = environment.luafile(filename)
if fullname and fullname ~= "" then
environment.showmessage("loading", fullname)
if register then
if not environment.regfil then
environment.regfil = io.open('luafiles.tmp', 'w')
end
if environment.regfil then
environment.regfil:write(fullname .."\n")
end
end
dofile(fullname)
else
environment.showmessage("unknown file", filename)
end
end
function environment.loadlucfile(filename,version)
local filename = filename:gsub("%.%a+$", "")
local fullname = nil
if environment.initex or not environment.useluc then
environment.loadluafile(filename,environment.initex)
else
if environment.lucpath and environment.lucpath ~= "" then
fullname = environment.lucpath .. "/" .. filename .. ".luc"
local chunk = loadfile(fullname) -- this way we don't need a file exists check
if chunk then
environment.showmessage("loading", fullname)
assert(chunk)()
if version then
--~ if modules and modules[filename] and modules[filename].version ~= version then
--~ environment.showmessage("version mismatch", filename,"lua=" .. modules[filename].version, "luc=" ..version)
--~ environment.loadluafile(filename)
--~ elseif versions and versions[filename] and versions[filename] ~= version then
--~ environment.showmessage("version mismatch", filename,"lua=" .. versions[filename], "luc=" ..version)
--~ environment.loadluafile(filename)
--~ end
local v = version -- can be nil
if modules and modules[filename] then
v = modules[filename].version -- new
elseif versions and versions[filename] then
v = versions[filename] -- old
end
if v ~= version then
environment.showmessage("version mismatch", filename,"lua=" .. v, "luc=" ..version)
environment.loadluafile(filename)
end
end
else
environment.loadluafile(filename)
end
else
environment.loadluafile(filename)
end
end
end
function environment.loadedctxfile(filename)
local fullname = environment.ctxfile(filename)
local i = io.open(fullname)
if i then
local data = i:read('*all')
i:close()
return data
else
environment.showmessage("missing",filename)
return ""
end
end
environment.setlucpath()
|
