summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/context/base/lang-wrd.lua
blob: b564a02aec92a8d7aa56e860d8206c72f4f297f6 (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
if not modules then modules = { } end modules ['lang-wrd'] = {
    version   = 1.001,
    comment   = "companion to lang-ini.mkiv",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files"
}

local lower = string.lower
local utfchar = utf.char
local concat = table.concat
local lpegmatch = lpeg.match
local P, S, Cs = lpeg.P, lpeg.S, lpeg.Cs

local report_words = logs.reporter("languages","words")

local nodes           = nodes
local languages       = languages

local implement       = interfaces.implement

languages.words       = languages.words or { }
local words           = languages.words

words.data            = words.data or { }
words.enables         = false
words.threshold       = 4

local numbers         = languages.numbers
local registered      = languages.registered

local nuts            = nodes.nuts
local tonut           = nuts.tonut

local getfield        = nuts.getfield
local getnext         = nuts.getnext
local getid           = nuts.getid
local getsubtype      = nuts.getsubtype
local getchar         = nuts.getchar
local setattr         = nuts.setattr

local traverse_nodes  = nuts.traverse

local wordsdata       = words.data
local chardata        = characters.data
local tasks           = nodes.tasks

local unsetvalue      = attributes.unsetvalue

local nodecodes       = nodes.nodecodes
local kerncodes       = nodes.kerncodes

local glyph_code      = nodecodes.glyph
local disc_code       = nodecodes.disc
local kern_code       = nodecodes.kern

local kerning_code    = kerncodes.kerning
local lowerchar       = characters.lower

local a_color         = attributes.private('color')
local colist          = attributes.list[a_color]

local is_letter       = characters.is_letter -- maybe is_character as variant

local spacing = S(" \n\r\t")
local markup  = S("-=")
local lbrace  = P("{")
local rbrace  = P("}")
local disc    = (lbrace * (1-rbrace)^0 * rbrace)^1 -- or just 3 times, time this
local word    = Cs((markup/"" + disc/"" + (1-spacing))^1)

local loaded = { } -- we share lists

function words.load(tag,filename)
    local fullname = resolvers.findfile(filename,'other text file') or ""
    if fullname ~= "" then
        report_words("loading word file %a",fullname)
        statistics.starttiming(languages)
        local list = loaded[fullname]
        if not list then
            list = wordsdata[tag] or { }
            local parser = (spacing + word/function(s) list[s] = true end)^0
            lpegmatch(parser,io.loaddata(fullname) or "")
            loaded[fullname] = list
        end
        wordsdata[tag] = list
        statistics.stoptiming(languages)
    else
        report_words("missing word file %a",filename)
    end
end

function words.found(id, str)
    local tag = languages.numbers[id]
    if tag then
        local data = wordsdata[tag]
        if data then
            if data[str] then
                return 1
            elseif data[lower(str)] then
                return 2
            end
        end
    end
end

-- The following code is an adaption of experimental code for hyphenating and
-- spell checking.

-- there is an n=1 problem somewhere in nested boxes

local function mark_words(head,whenfound) -- can be optimized and shared
    local current, language, done = tonut(head), nil, nil, 0, false
    local str, s, nds, n = { }, 0, { }, 0 -- n could also be a table, saves calls
    local function action()
        if s > 0 then
            local word = concat(str,"",1,s)
            local mark = whenfound(language,word)
            if mark then
                done = true
                for i=1,n do
                    mark(nds[i])
                end
            end
        end
        n, s = 0, 0
    end
    while current do
        local id = getid(current)
        if id == glyph_code then
            local a = getfield(current,"lang")
            if a then
                if a ~= language then
                    if s > 0 then
                        action()
                    end
                    language = a
                end
            elseif s > 0 then
                action()
                language = a
            end
            local components = getfield(current,"components")
            if components then
                n = n + 1
                nds[n] = current
                for g in traverse_nodes(components) do
                    s = s + 1
                    str[s] = utfchar(getchar(g))
                end
            else
                local code = getchar(current)
                local data = chardata[code]
                if is_letter[data.category] then
                    n = n + 1
                    nds[n] = current
                    s = s + 1
                    str[s] = utfchar(code)
                elseif s > 0 then
                    action()
                end
            end
        elseif id == disc_code then -- take the replace
            if n > 0 then
                n = n + 1
                nds[n] = current
            end
        elseif id == kern_code and getsubtype(current) == kerning_code and s > 0 then
            -- ok
        elseif s > 0 then
            action()
        end
        current = getnext(current)
    end
    if s > 0 then
        action()
    end
    return head, done
end

local methods  = { }
words.methods  = methods

local enablers = { }
words.enablers = enablers

local wordmethod = 1
local enabled    = false

function words.check(head)
    if enabled then
        return methods[wordmethod](head)
    elseif not head then
        return head, false
    else
        return head, false
    end
end

function words.enable(settings)
    local method = settings.method
    wordmethod = method and tonumber(method) or wordmethod or 1
    local e = enablers[wordmethod]
    if e then e(settings) end
    tasks.enableaction("processors","languages.words.check")
    enabled = true
end

function words.disable()
    enabled = false
end

-- colors

local cache = { } -- can also be done with method 1 -- frozen colors once used

table.setmetatableindex(cache, function(t,k) -- k == language, numbers[k] == tag
    local c
    if type(k) == "string" then
        c = colist[k]
    elseif k < 0 then
        c = colist["word:unset"]
    else
        c = colist["word:" .. (numbers[k] or "unset")] or colist["word:unknown"]
    end
    local v = c and function(n) setattr(n,a_color,c) end or false
    t[k] = v
    return v
end)

-- method 1

local function sweep(language,str)
    if #str < words.threshold then
        return false
    elseif words.found(language,str) then -- can become a local wordsfound
        return cache["word:yes"] -- maybe variables.yes
    else
        return cache["word:no"]
    end
end

methods[1] = function(head)
    for n in traverse_nodes(head) do
        setattr(n,a_color,unsetvalue) -- hm, not that selective (reset color)
    end
    return mark_words(head,sweep)
end

-- method 2

local dumpname   = nil
local dumpthem   = false
local listname   = "document"

local category   = { }
local categories = { }

setmetatable(categories, {
    __index = function(t,k)
        local languages = { }
        setmetatable(languages, {
            __index = function(t,k)
                local r = registered[k]
                local v = {
                    number   = language,
                    parent   = r and r.parent   or nil,
                    patterns = r and r.patterns or nil,
                    tag      = r and r.tag      or nil,
                    list     = { },
                    total    = 0,
                    unique   = 0,
                }
                t[k] = v
                return v
            end
        } )
        local v = {
            languages = languages,
            total     = 0,
        }
        t[k] = v
        return v
    end
} )

local collected  = {
    total      = 0,
    version    = 1.000,
    categories = categories,
}

enablers[2] = function(settings)
    local name = settings.list
    listname = name and name ~= "" and name or "document"
    category = collected.categories[listname]
end

local function sweep(language,str)
    if #str >= words.threshold then
        str = lowerchar(str)
        local words = category.languages[numbers[language] or "unset"]
        local list = words.list
        local ls = list[str]
        if ls then
            list[str] = ls + 1
        else
            list[str] = 1
            words.unique = words.unique + 1
        end
        collected.total = collected.total + 1
        category.total = category.total + 1
        words.total = words.total + 1
    end
end

methods[2] = function(head)
    dumpthem = true
    return mark_words(head,sweep)
end

local function dumpusedwords()
    if dumpthem then
        collected.threshold = words.threshold
        dumpname = dumpname or file.addsuffix(tex.jobname,"words")
        report_words("saving list of used words in %a",dumpname)
        io.savedata(dumpname,table.serialize(collected,true))
     -- table.tofile(dumpname,list,true)
    end
end

directives.register("languages.words.dump", function(v)
    dumpname = type(v) == "string" and v ~= "" and v
end)

luatex.registerstopactions(dumpusedwords)

-- method 3

local function sweep(language,str)
    return cache[language]
end

methods[3] = function(head)
    for n in traverse_nodes(head) do
        setattr(n,a_color,unsetvalue)
    end
    return mark_words(head,sweep)
end

-- for the moment we hook it into the attribute handler

-- languagehacks = { }

-- function languagehacks.process(namespace,attribute,head)
--     return languages.check(head)
-- end

-- chars.plugins[chars.plugins+1] = {
--     name = "language",
--     namespace = languagehacks,
--     processor = languagehacks.process
-- }

-- interface

implement {
    name      = "enablespellchecking",
    actions   = words.enable,
    arguments = {
        {
            { "method" },
            { "list" }
        }
    }
}

implement {
    name      = "disablespellchecking",
    actions   = words.disable
}

implement {
    name      = "loadspellchecklist",
    arguments = { "string", "string" },
    actions   = words.load
}