summaryrefslogtreecommitdiff
path: root/src/fontloader/luaotfload-basics-gen.lua
blob: c19a49af39f64e025ef6a3831e049537b6322452 (plain)
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
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
if not modules then modules = { } end modules ['luat-basics-gen'] = {
    version   = 1.100,
    comment   = "companion to luatex-*.tex",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files"
}

if context then
    texio.write_nl("fatal error: this module is not for context")
    os.exit()
end

local dummyfunction = function()
end

local dummyreporter = function(c)
    return function(...)
        (texio.reporter or texio.write_nl)(c .. " : " .. string.formatters(...))
    end
end

statistics = {
    register      = dummyfunction,
    starttiming   = dummyfunction,
    stoptiming    = dummyfunction,
    elapsedtime   = nil,
}

directives = {
    register      = dummyfunction,
    enable        = dummyfunction,
    disable       = dummyfunction,
}

trackers = {
    register      = dummyfunction,
    enable        = dummyfunction,
    disable       = dummyfunction,
}

experiments = {
    register      = dummyfunction,
    enable        = dummyfunction,
    disable       = dummyfunction,
}

storage = { -- probably no longer needed
    register      = dummyfunction,
    shared        = { },
}

logs = {
    new           = dummyreporter,
    reporter      = dummyreporter,
    messenger     = dummyreporter,
    report        = dummyfunction,
}

callbacks = {
    register = function(n,f) return callback.register(n,f) end,

}

utilities = {
    storage = {
        allocate = function(t) return t or { } end,
        mark     = function(t) return t or { } end,
    },
}

characters = characters or {
    data = { }
}

-- we need to cheat a bit here

texconfig.kpse_init = true

resolvers = resolvers or { } -- no fancy file helpers used

local remapper = {
    otf    = "opentype fonts",
    ttf    = "truetype fonts",
    ttc    = "truetype fonts",
    dfont  = "truetype fonts", -- "truetype dictionary",
    cid    = "cid maps",
    cidmap = "cid maps",
    fea    = "font feature files",
    pfa    = "type1 fonts", -- this is for Khaled, in ConTeXt we don't use this!
    pfb    = "type1 fonts", -- this is for Khaled, in ConTeXt we don't use this!
    afm    = "afm",
}

function resolvers.findfile(name,fileformat)
    name = string.gsub(name,"\\","/")
    if not fileformat or fileformat == "" then
        fileformat = file.suffix(name)
        if fileformat == "" then
            fileformat = "tex"
        end
    end
    fileformat = string.lower(fileformat)
    fileformat = remapper[fileformat] or fileformat
    local found = kpse.find_file(name,fileformat)
    if not found or found == "" then
        found = kpse.find_file(name,"other text files")
    end
    return found
end

-- function resolvers.findbinfile(name,fileformat)
--     if not fileformat or fileformat == "" then
--         fileformat = file.suffix(name)
--     end
--     return resolvers.findfile(name,(fileformat and remapper[fileformat]) or fileformat)
-- end

resolvers.findbinfile = resolvers.findfile

function resolvers.loadbinfile(filename,filetype)
    local data = io.loaddata(filename)
    return true, data, #data
end

function resolvers.resolve(s)
    return s
end

function resolvers.unresolve(s)
    return s
end

-- Caches ... I will make a real stupid version some day when I'm in the
-- mood. After all, the generic code does not need the more advanced
-- ConTeXt features. Cached data is not shared between ConTeXt and other
-- usage as I don't want any dependency at all. Also, ConTeXt might have
-- different needs and tricks added.

--~ containers.usecache = true

caches = { }

local writable  = nil
local readables = { }
local usingjit  = jit

if not caches.namespace or caches.namespace == "" or caches.namespace == "context" then
    caches.namespace = 'generic'
end

do

    -- standard context tree setup

    local cachepaths = kpse.expand_var('$TEXMFCACHE') or ""

    -- quite like tex live or so (the weird $TEXMFCACHE test seems to be needed on miktex)

    if cachepaths == "" or cachepaths == "$TEXMFCACHE" then
        cachepaths = kpse.expand_var('$TEXMFVAR') or ""
    end

    -- this also happened to be used (the weird $TEXMFVAR test seems to be needed on miktex)

    if cachepaths == "" or cachepaths == "$TEXMFVAR" then
        cachepaths = kpse.expand_var('$VARTEXMF') or ""
    end

    -- and this is a last resort (hm, we could use TEMP or TEMPDIR)

    if cachepaths == "" then
        local fallbacks = { "TMPDIR", "TEMPDIR", "TMP", "TEMP", "HOME", "HOMEPATH" }
        for i=1,#fallbacks do
            cachepaths = os.getenv(fallbacks[i]) or ""
            if cachepath ~= "" and lfs.isdir(cachepath) then
                break
            end
        end
    end

    if cachepaths == "" then
        cachepaths = "."
    end

    cachepaths = string.split(cachepaths,os.type == "windows" and ";" or ":")

    for i=1,#cachepaths do
        local cachepath = cachepaths[i]
        if not lfs.isdir(cachepath) then
            lfs.mkdirs(cachepath) -- needed for texlive and latex
            if lfs.isdir(cachepath) then
                texio.write(string.format("(created cache path: %s)",cachepath))
            end
        end
        if file.is_writable(cachepath) then
            writable = file.join(cachepath,"luatex-cache")
            lfs.mkdir(writable)
            writable = file.join(writable,caches.namespace)
            lfs.mkdir(writable)
            break
        end
    end

    for i=1,#cachepaths do
        if file.is_readable(cachepaths[i]) then
            readables[#readables+1] = file.join(cachepaths[i],"luatex-cache",caches.namespace)
        end
    end

    if not writable then
        texio.write_nl("quiting: fix your writable cache path")
        os.exit()
    elseif #readables == 0 then
        texio.write_nl("quiting: fix your readable cache path")
        os.exit()
    elseif #readables == 1 and readables[1] == writable then
        texio.write(string.format("(using cache: %s)",writable))
    else
        texio.write(string.format("(using write cache: %s)",writable))
        texio.write(string.format("(using read cache: %s)",table.concat(readables, " ")))
    end

end

function caches.getwritablepath(category,subcategory)
    local path = file.join(writable,category)
    lfs.mkdir(path)
    path = file.join(path,subcategory)
    lfs.mkdir(path)
    return path
end

function caches.getreadablepaths(category,subcategory)
    local t = { }
    for i=1,#readables do
        t[i] = file.join(readables[i],category,subcategory)
    end
    return t
end

local function makefullname(path,name)
    if path and path ~= "" then
        return file.addsuffix(file.join(path,name),"lua"), file.addsuffix(file.join(path,name),usingjit and "lub" or "luc")
    end
end

function caches.is_writable(path,name)
    local fullname = makefullname(path,name)
    return fullname and file.is_writable(fullname)
end

function caches.loaddata(paths,name)
    for i=1,#paths do
        local data = false
        local luaname, lucname = makefullname(paths[i],name)
        if lucname and not lfs.isfile(lucname) and type(caches.compile) == "function" then
            -- in case we used luatex and luajittex mixed ... lub or luc file
            texio.write(string.format("(compiling luc: %s)",lucname))
            data = loadfile(luaname)
            if data then
                data = data()
            end
            if data then
                caches.compile(data,luaname,lucname)
                return data
            end
        end
        if lucname and lfs.isfile(lucname) then -- maybe also check for size
            texio.write(string.format("(load luc: %s)",lucname))
            data = loadfile(lucname)
            if data then
                data = data()
            end
            if data then
                return data
            else
                texio.write(string.format("(loading failed: %s)",lucname))
            end
        end
        if luaname and lfs.isfile(luaname) then
            texio.write(string.format("(load lua: %s)",luaname))
            data = loadfile(luaname)
            if data then
                data = data()
            end
            if data then
                return data
            end
        end
    end
end

function caches.savedata(path,name,data)
    local luaname, lucname = makefullname(path,name)
    if luaname then
        texio.write(string.format("(save: %s)",luaname))
        table.tofile(luaname,data,true)
        if lucname and type(caches.compile) == "function" then
            os.remove(lucname) -- better be safe
            texio.write(string.format("(save: %s)",lucname))
            caches.compile(data,luaname,lucname)
        end
    end
end

-- According to KH os.execute is not permitted in plain/latex so there is
-- no reason to use the normal context way. So the method here is slightly
-- different from the one we have in context. We also use different suffixes
-- as we don't want any clashes (sharing cache files is not that handy as
-- context moves on faster.)
--
-- Beware: serialization might fail on large files (so maybe we should pcall
-- this) in which case one should limit the method to luac and enable support
-- for execution.

-- function caches.compile(data,luaname,lucname)
--     local d = io.loaddata(luaname)
--     if not d or d == "" then
--         d = table.serialize(data,true) -- slow
--     end
--     if d and d ~= "" then
--         local f = io.open(lucname,'w')
--         if f then
--             local s = loadstring(d)
--             if s then
--                 f:write(string.dump(s,true))
--             end
--             f:close()
--         end
--     end
-- end

function caches.compile(data,luaname,lucname)
    local d = io.loaddata(luaname)
    if not d or d == "" then
        d = table.serialize(data,true) -- slow
    end
    if d and d ~= "" then
        local f = io.open(lucname,'wb')
        if f then
            local s = loadstring(d)
            if s then
                f:write(string.dump(s,true))
            end
            f:close()
        end
    end
end

--

function table.setmetatableindex(t,f)
    setmetatable(t,{ __index = f })
end

-- helper for plain:

arguments = { }

if arg then
    for i=1,#arg do
        local k, v = string.match(arg[i],"^%-%-([^=]+)=?(.-)$")
        if k and v then
            arguments[k] = v
        end
    end
end