summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/luatex/luatextra/luatextra.lua
blob: 2340fec3164133f47616375690f53aa86ef6c9a1 (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
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
-- 
--  This is file `luatextra.lua',
--  generated with the docstrip utility.
-- 
--  The original source files were:
-- 
--  luatextra.dtx  (with options: `lua')
--  This is a generated file.
--  
--  Copyright (C) 2009 by Elie Roux <elie.roux@telecom-bretagne.eu>
--  
--  This work is under the CC0 license.
--  
--  This work consists of the main source file luainputenc.dtx
--  and the derived files
--      luatextra.sty, luatextra.lua, luatextra-latex.tex, luatextra.pdf
--  
do
    local luatextrapath = kpse.find_file("luatextra.lua")
    if luatextrapath then
        if luatextrapath:sub(1,2) == "./" then
            luatextrapath = luatextrapath:sub(3)
        end
        texio.write_nl('('..luatextrapath)
    end
end


luatextra = {}

module("luatextra", package.seeall)


luatextra.modules = {}

luatextra.modules['luatextra'] = {
    version     = 0.95,
    name        = "luatextra",
    date        = "2009/12/16",
    description = "Additional low level functions for LuaTeX",
    author      = "Elie Roux",
    copyright   = "Elie Roux, 2009",
    license     = "CC0",
}

local format = string.format


luatextra.internal_warning_spaces = "                   "

function luatextra.internal_warning(msg)
    if not msg then return end
    texio.write_nl(format("\nLuaTeXtra Warning: %s\n\n", msg))
end

luatextra.internal_error_spaces = "                 "

function luatextra.internal_error(msg)
    if not msg then return end
    tex.sprint(format("\\immediate\\write16{}\\errmessage{LuaTeXtra error: %s^^J^^J}", msg))
end


function luatextra.module_error(package, msg, helpmsg)
    if not package or not msg then
        return
    end
    if helpmsg then
        tex.sprint(format("\\errhelp{%s}", helpmsg))
    end
    tex.sprint(format("\\luatexModuleError{%s}{%s}", package, msg))
end

function luatextra.module_warning(modulename, msg)
    if not modulename or not msg then
        return
    end
    texio.write_nl(format("\nModule %s Warning: %s\n\n", modulename, msg))
end

function luatextra.module_log(modulename, msg)
    if not modulename or not msg then
        return
    end
    texio.write_nl('log', format("%s: %s", modulename, msg))
end

function luatextra.module_term(modulename, msg)
    if not modulename or not msg then
        return
    end
    texio.write_nl('term', format("%s: %s", modulename, msg))
end

function luatextra.module_info(modulename, msg)
    if not modulename or not msg then
        return
    end
    texio.write_nl(format("%s: %s\n", modulename, msg))
end


function luatextra.find_module_file(name)
    if string.sub(name, -4) ~= '.lua' then
        name = name..'.lua'
    end
    path = kpse.find_file(name, 'tex')
    if not path then
      path = kpse.find_file(name, 'texmfscripts')
    end
    return path, name
end


luatextra.module = module


function luatextra.use_module(name)
    if not name or luatextra.modules[name] then
        return
    end
    local path, filename = luatextra.find_module_file(name)
    if not path then
        luatextra.internal_error(format("unable to find lua module %s", name))
    else
        if path:sub(1,2) == "./" then
            path = path:sub(3)
        end
        texio.write_nl('('..path)
        dofile(path)
        if not luatextra.modules[name] then
            luatextra.internal_warning(format("You have requested module `%s',\n%s but the file %s does not provide it.", name, luatextra.internal_warning_spaces, filename))
        end
        if not package.loaded[name] then
            luatextra.module(name, package.seeall)
        end
        texio.write(')')
    end
end


function luatextra.datetonumber(date)
    numbers = string.gsub(date, "(%d+)/(%d+)/(%d+)", "%1%2%3")
    return tonumber(numbers)
end

function luatextra.isdate(date)
    for _, _ in string.gmatch(date, "%d+/%d+/%d+") do
        return true
    end
    return false
end

local date, number = 1, 2

function luatextra.versiontonumber(version)
    if luatextra.isdate(version) then
        return {type = date, version = luatextra.datetonumber(version), orig = version}
    else
        return {type = number, version = tonumber(version), orig = version}
    end
end

luatextra.requiredversions = {}


function luatextra.require_module(name, version)
    if not name then
        return
    end
    if not version then
        return luatextra.use_module(name)
    end
    luaversion = luatextra.versiontonumber(version)
    if luatextra.modules[name] then
        if luaversion.type == date then
            if luatextra.datetonumber(luatextra.modules[name].date) < luaversion.version then
                luatextra.internal_error(format("found module `%s' loaded in version %s, but version %s was required", name, luatextra.modules[name].date, version))
            end
        else
            if luatextra.modules[name].version < luaversion.version then
                luatextra.internal_error(format("found module `%s' loaded in version %.02f, but version %s was required", name, luatextra.modules[name].version, version))
            end
        end
    else
        luatextra.requiredversions[name] = luaversion
        luatextra.use_module(name)
    end
end


function luatextra.provides_module(mod)
    if not mod then
        luatextra.internal_error('cannot provide nil module')
        return
    end
    if not mod.version or not mod.name or not mod.date or not mod.description then
        luatextra.internal_error('invalid module registered, fields name, version, date and description are mandatory')
        return
    end
    requiredversion = luatextra.requiredversions[mod.name]
    if requiredversion then
        if requiredversion.type == date and requiredversion.version > luatextra.datetonumber(mod.date) then
            luatextra.internal_error(format("loading module %s in version %s, but version %s was required", mod.name, mod.date, requiredversion.orig))
        elseif requiredversion.type == number and requiredversion.version > mod.version then
            luatextra.internal_error(format("loading module %s in version %.02f, but version %s was required", mod.name, mod.version, requiredversion.orig))
        end
    end
    luatextra.modules[mod.name] = module
    texio.write_nl('log', format("Lua module: %s %s v%.02f %s\n", mod.name, mod.date, mod.version, mod.description))
end


luatextra.use_module('luaextra')


function luatextra.kpse_module_loader(mod)
  local file = luatextra.find_module_file(mod)
  if file then
    local loader, error = loadfile(file)
    if loader then
      texio.write_nl("(" .. file .. ")")
      return loader
    end
    return "\n\t[luatextra.kpse_module_loader] Loading error:\n\t"
           .. error
  end
  return "\n\t[luatextra.kpse_module_loader] Search failed"
end

table.insert(package.loaders, luatextra.kpse_module_loader)


luatextra.attributes = {}

tex.attributenumber = luatextra.attributes

function luatextra.attributedef_from_tex(name, number)
    truename = name:gsub('[\\ ]', '')
    luatextra.attributes[truename] = tonumber(number)
end


luatextra.catcodetables = {}

tex.catcodetablenumber = luatextra.catcodetables

function luatextra.catcodetabledef_from_tex(name, number)
    truename = name:gsub('[\\ ]', '')
    luatextra.catcodetables[truename] = tonumber(number)
end


function luatextra.catcodetable_do_shortcuts()
    local cat = tex.catcodetablenumber
    local val = cat['CatcodeTableLaTeX']
    if val then
      cat['latex'] = val
    end
    val = cat['CatcodeTableLaTeXAtLetter']
    if val then
      cat['latex-package'] = val
      cat['latex-atletter'] = val
    end
    val = cat['CatcodeTableIniTeX']
    if val then
      cat['ini'] = val
    end
    val = cat['CatcodeTableExpl']
    if val then
      cat['expl3'] = val
      cat['expl'] = val
    end
    val = cat['CatcodeTableString']
    if val then
      cat['string'] = val
    end
    val = cat['CatcodeTableOther']
    if val then
      cat['other'] = val
    end
end


function luatextra.open_read_file(filename)
    local path = kpse.find_file(filename)
    local env = {
      ['filename'] = filename,
      ['path'] = path,
    }
    luamcallbacks.call('pre_read_file', env)
    path = env.path
    if not path then
        return
    end
    local f = env.file
    if not f then
        f = io.open(path)
        env.file = f
    end
    if not f then
        return
    end
    env.reader = luatextra.reader
    env.close = luatextra.close
    return env
end


function luatextra.reader(env)
    local line = (env.file):read()
    line = luamcallbacks.call('file_reader', env, line)
    return line
end

function luatextra.close(env)
    (env.file):close()
    luamcallbacks.call('file_close', env)
end


function luatextra.default_reader(env, line)
    return line
end

function luatextra.default_close(env)
    return
end

function luatextra.default_pre_read(env)
    return env
end


do
  if tex.luatexversion < 36 then
      fontloader = fontforge
  end
end

function luatextra.find_font(name)
    local types = {'ofm', 'ovf', 'opentype fonts', 'truetype fonts'}
    local path = kpse.find_file(name)
    if path then return path end
    for _,t in pairs(types) do
        path = kpse.find_file(name, t)
        if path then return path end
    end
    return nil
end

function luatextra.font_load_error(error)
    luatextra.module_warning('luatextra', string.format('%s\nloading lmr10 instead...', error))
end

function luatextra.load_default_font(size)
    return font.read_tfm("lmr10", size)
end

function luatextra.define_font(name, size)
    if (size < 0) then size = (- 655.36) * size end
    local fontinfos = {
        asked_name = name,
        name = name,
        size = size
        }
    callback.call('font_syntax', fontinfos)
    name = fontinfos.name
    local path = fontinfos.path
    if not path then
        path = luatextra.find_font(name)
        fontinfos.path = luatextra.find_font(name)
    end
    if not path then
        luatextra.font_load_error("unable to find font "..name)
        return luatextra.load_default_font(size)
    end
    if not fontinfos.filename then
        fontinfos.filename = fpath.basename(path)
    end
    local ext = fpath.suffix(path)
    local f
    if ext == 'tfm' or ext == 'ofm' then
        f =  font.read_tfm(name, size)
    elseif ext == 'vf' or ext == 'ovf' then
        f =  font.read_vf(name, size)
    elseif ext == 'ttf' or ext == 'otf' or ext == 'ttc' then
        f = callback.call('open_otf_font', fontinfos)
    else
        luatextra.font_load_error("unable to determine the type of font "..name)
        f = luatextra.load_default_font(size)
    end
    if not f then
        luatextra.font_load_error("unable to load font "..name)
        f = luatextra.load_default_font(size)
    end
    callback.call('post_font_opening', f, fontinfos)
    return f
end

function luatextra.default_font_syntax(fontinfos)
    return
end

function luatextra.default_open_otf(fontinfos)
    return nil
end

function luatextra.default_post_font(f, fontinfos)
    return true
end

function luatextra.register_font_callback()
    callback.add('define_font', luatextra.define_font, 'luatextra.define_font')
end

do
    luatextra.use_module('luamcallbacks')
    callback.create('pre_read_file', 'simple', luatextra.default_pre_read)
    callback.create('file_reader', 'data', luatextra.default_reader)
    callback.create('file_close', 'simple', luatextra.default_close)
    callback.add('open_read_file', luatextra.open_read_file, 'luatextra.open_read_file')
    callback.create('font_syntax', 'simple', luatextra.default_font_syntax)
    callback.create('open_otf_font', 'first', luatextra.default_open_otf)
    callback.create('post_font_opening', 'simple', luatextra.default_post_font)

    if luatextrapath then
        texio.write(')')
    end
end
-- 
--  End of File `luatextra.lua'.