summaryrefslogtreecommitdiff
path: root/otfl-font-nms.lua
blob: 3cedaa222cb12454b8ab40ba45c532afa1fbc209 (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
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
if not modules then modules = { } end modules ['font-nms'] = {
    version   = 1.002,
    comment   = "companion to luaotfload.lua",
    author    = "Khaled Hosny and Elie Roux",
    copyright = "Luaotfload Development Team",
    license   = "GPL"
}

fonts                = fonts       or { }
fonts.names          = fonts.names or { }

local names          = fonts.names
names.version        = 2.005 -- not the same as in context
names.data           = nil
names.path           = {
    basename  = "otfl-names.lua",
    localdir  = kpse.expand_var("$TEXMFVAR")    .. "/luatex-cache/latex/names/",
    systemdir = kpse.expand_var("$TEXMFSYSVAR") .. "/luatex-cache/latex/names/",
}


local splitpath, expandpath, glob, basename = file.split_path, kpse.expand_path, dir.glob, file.basename
local upper, lower, format, gsub, match  = string.upper, string.lower, string.format, string.gsub, string.match
local rpadd = string.rpadd
local utfgsub = unicode.utf8.gsub

local trace_progress = true  --trackers.register("names.progress", function(v) trace_progress = v end)
local trace_search   = false --trackers.register("names.search",   function(v) trace_search   = v end)
local trace_loading  = false --trackers.register("names.loading",  function(v) trace_loading  = v end)

local function sanitize(str)
    return utfgsub(lower(str), "[^%a%d]", "")
end

function names.load()
    local localpath  = names.path.localdir  .. names.path.basename
    local systempath = names.path.systemdir .. names.path.basename
    local data
    if file.isreadable(localpath) then
        data = dofile(localpath)
    elseif file.isreadable(systempath) then
        data = dofile(systempath)
    end
    if data then
        if trace_loading then
            logs.report("load font", "loaded font names database: %s", foundname)
        end
        return data
    end
end

local loaded    = false
local synonyms  = {
    regular     = {"normal", "roman", "plain", "book", "medium"},
    italic      = {"regularitalic", "normalitalic", "oblique", "slant"},
    bolditalic  = {"boldoblique", "boldslant"},
}

function names.resolve(specification)
    local name  = specification.name
    local style = specification.style or "regular"
    if not loaded then
        names.data   = names.load()
        loaded = true
    end
    local data  = names.data
    if type(data) == "table" and data.version == names.version then
        if data.mappings then
            local family = data.families[sanitize(name)]
            if family and type(family) == "table" then
                for _,v in ipairs(family) do
                   local face      = data.mappings[v]
                   local subfamily = sanitize(face.names.subfamily)
                   local filename  = face.filename
                   local optsize, rqssize, dsnsize, maxsize, minsize
                   if #face.size > 0 then
                       optsize = face.size
                       rqssize = tonumber(specification.optsize) or specification.size and specification.size / 65536
                       dsnsize = optsize[1] and optsize[1] / 10
                       maxsize = optsize[2] and optsize[2] / 10 or dsnsize -- can be nil
                       minsize = optsize[3] and optsize[3] / 10 or dsnsize -- can be nil
                   end
                   if subfamily then
                       if subfamily == style then
                           if optsize then
                               if dsnsize == rqssize or (rqssize > minsize and rqssize <= maxsize) then
                                   logs.report("load font", "font family='%s', subfamily='%s' found: %s", name, style, filename)
                                   return filename, false
                               end
                           else
                               logs.report("load font", "font family='%s', subfamily='%s' found: %s", name, style, filename)
                               return filename, false
                           end
                       else
                           if synonyms[style] then
                               for _,v in ipairs(synonyms[style]) do
                                   if subfamily == v then
                                       if optsize then
                                           if dsnsize == rqssize or (rqssize > minsize and rqssize <= maxsize) then
                                               logs.report("load font", "font family='%s', subfamily='%s' found: %s", name, style, filename)
                                               return filename, false
                                           end
                                       else
                                           logs.report("load font", "font family='%s', subfamily='%s' found: %s", name, style, filename)
                                           return filename, false
                                       end
                                   end
                               end
                           end
                       end
                   end
                end
            else
                for i,v in ipairs(data.mappings) do
                    if sanitize(v.fullname) == sanitize(name) or sanitize(v.names.fullname) == sanitize(name) then
                        logs.report("load font", "font fullname='%s' found: %s", name, v.filename)
                        return v.filename, false
                    end
                end
            end
            return name, false -- fallback to filename
        end
    else
        logs.report("load font", "no font names database loaded")
    end
end

names.resolvespec = names.resolve -- only supported in mkiv

function names.set_log_level(level)
    if level == 2 then
        trace_progress = false
        trace_loading = true
    elseif level >= 3 then
        trace_progress = false
        trace_loading = true
        trace_search = true
    end
end
    
local lastislog = 0

function log(fmt, ...)
    lastislog = 1
    texio.write_nl(format("luaotfload | %s", format(fmt,...)))
end

logs        = logs or { }
logs.report = logs.report or log

local log = names.log

-- The progress bar
local function progress(current, total)
    if trace_progress then
--      local width   = os.getenv("COLUMNS") -2 --doesn't work
        local width   = 78
        local percent = current/total
        local gauge   = format("[%s]", rpadd(" ", width, " "))
        if percent > 0 then
            local done = rpadd("=", (width * percent) - 1, "=") .. ">"
            gauge = format("[%s]", rpadd(done, width, " ") )
        end
        if lastislog == 1 then
            texio.write_nl("")
            lastislog = 0
        end
        io.stderr:write("\r"..gauge)
        io.stderr:flush()
    end
end

function fontloader.fullinfo(...)
    local t = { }
    local f = fontloader.open(...)
    local m = f and fontloader.to_table(f)
    fontloader.close(f)
    collectgarbage('collect')
    -- see http://www.microsoft.com/typography/OTSPEC/features_pt.htm#size
    if m.fontstyle_name then
        for _,v in pairs(m.fontstyle_name) do
            if v.lang == 1033 then
                t.fontstyle_name = v.name
            end
        end
    end
    if m.names then
        for _,v in pairs(m.names) do
            if v.lang == "English (US)" then
                t.names = {
                    -- see http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.html
                    fullname       = v.names.compatfull     or v.names.fullname, -- 18, 4
                    family         = v.names.preffamilyname or v.names.family,   -- 17, 1
                    subfamily      = t.fontstyle_name       or v.names.prefmodifiers  or v.names.subfamily, -- opt. style, 16, 2
                    psname         = v.names.postscriptname --or t.fontname
                }
            end
        end
    end
    t.fontname    = m.fontname
    t.fullname    = m.fullname
    t.familyname  = m.familyname
    t.filename    = m.origname
    t.weight      = m.pfminfo.weight
    t.width       = m.pfminfo.width
    t.slant       = m.italicangle
    -- don't waste the space with zero values
    t.size = {
        m.design_size         ~= 0 and m.design_size         or nil,
        m.design_range_top    ~= 0 and m.design_range_top    or nil,
        m.design_range_bottom ~= 0 and m.design_range_bottom or nil,
    }

    t.names.family = sanitize(t.names.family)
    return t
end

local function load_font(filename, fontnames, status, newfontnames, newstatus, texmf)
    local mappings  = newfontnames and newfontnames.mappings  or { }
    local families  = newfontnames and newfontnames.families  or { }
    local oldmappings  = fontnames.mappings  or { }
    local oldfamilies  = fontnames.families  or { }
    local purge = true
    local tofillstatus = newstatus
    if not newstatus then
        purge = false
        families = fontnames.families  or { }
        mappings = fontnames.mappings  or { }
        tofillstatus = status
    end
    if filename then
        local db_lastmodif = status[filename] and status[filename].timestamp
        local true_lastmodif = lfs.attributes(filename, "modification")
        if purge then
            tofillstatus[filename] = {timestamp = true_lastmodif, mappings = {}}
        end
        if db_lastmodif and db_lastmodif == true_lastmodif then
            if purge then
                for _, i in ipairs(status[filename].mappings) do
                    mappings[#mappings+1] = oldmappings[i]
                    table.insert(tofillstatus[filename].mappings, #mappings)
                    if oldmappings[i].names.family then
                        if not families[oldmappings[i].names.family] then
                            families[oldmappings[i].names.family] = {}
                        end
                        table.insert(families[oldmappings[i].names.family], #mappings)
                    elseif trace_loading then
                        logs.report("font with broken names table: %s, ignored", filename)
                    end
                end
            end
            if trace_loading then
                logs.report("font already indexed: %s", filename)
            end
            return
        end
        if trace_loading then
            logs.report("loading font: %s", filename)
        end
        local checksum = file.checksum(filename)
        local info = fontloader.info(filename)
        if not purge then
            tofillstatus[filename] = {timestamp = true_lastmodif, mappings = {}}
        end
        if info then
            if type(info) == "table" and #info > 1 then
                for index,_ in ipairs(info) do
                    local fullinfo = fontloader.fullinfo(filename, index-1)
                    fullinfo.checksum = checksum
                    if texmf then
                        fullinfo.filename = basename(filename)
                    end
                    mappings[#mappings+1] = fullinfo
                    table.insert(tofillstatus[filename].mappings, #mappings)
                    if fullinfo.names.family then
                        if not families[fullinfo.names.family] then
                            families[fullinfo.names.family] = { }
                        end
                        table.insert(families[fullinfo.names.family], #mappings)
                    elseif trace_loading then
                        logs.report("font with broken names table: %s, ignored", filename)
                    end
                end
            else
                local fullinfo = fontloader.fullinfo(filename)
                fullinfo.checksum = checksum
                if texmf then
                    fullinfo.filename = basename(filename)
                end
                mappings[#mappings+1] = fullinfo
                table.insert(tofillstatus[filename].mappings, #mappings)
                if fullinfo.names.family then
                    if not families[fullinfo.names.family] then
                        families[fullinfo.names.family] = { }
                    end
                    table.insert(families[fullinfo.names.family], #mappings)
                else
                    if trace_loading then
                        logs.report("font with broken names table: %s, ignored", filename)
                    end
                end
            end
        else
            if trace_loading then
               logs.report("failed to load %s", filename)
            end
        end
    end
end

local function path_normalize(path)
    --[[
    path normalization:
    - a\b\c  -> a/b/c
    - a/../b -> b
    - /cygdrive/a/b -> a:/b
    --]]
    if os.type == "windows" or os.type == "msdos" or os.name == "cygwin" then
        path = path:gsub('\\', '/')
        path = path:lower()
        -- for cygwin cases...
        path = path:gsub('^/cygdrive/(%a)/', '%1:/')
    end
    path = file.collapse_path(path)
    return path
end

fonts.path_normalize = path_normalize

local function scan_dir(dirname, fontnames, status, newfontnames, newstatus, recursive, texmf)
    --[[
    this function scans a directory and populates the list of fonts
    with all the fonts it finds.
    - dirname is the name of the directory to scan
    - names is the font database to fill
    - recursive is whether we scan all directories recursively (always false
          in this script)
    - texmf is a boolean saying if we are scanning a texmf directory (always
          true in this script)
    --]]
    local list, found = { }, { }
    local nbfound = 0
    for _,ext in ipairs { "otf", "ttf", "ttc", "dfont" } do
        if recursive then pat = "/**." else pat = "/*." end
        if trace_search then
            logs.report("scanning '%s' for '%s' fonts", dirname, ext)
        end
        found = glob(dirname .. pat .. ext)
        -- note that glob fails silently on broken symlinks, which happens
        -- sometimes in TeX Live.
        if trace_search then
            logs.report("%s fonts found", #found)
        end
        nbfound = nbfound + #found
        table.append(list, found)
        if trace_search then
            logs.report("scanning '%s' for '%s' fonts", dirname, upper(ext))
        end
        found = glob(dirname .. pat .. upper(ext))
        table.append(list, found)
        nbfound = nbfound + #found
    end
    if trace_search then
        logs.report("%d fonts found in '%s'", nbfound, dirname)
    end
    for _,fnt in ipairs(list) do
        fnt = path_normalize(fnt)
        load_font(fnt, fontnames, status, newfontnames, newstatus, texmf)
    end
end

local function scan_texmf_tree(fontnames, status, newfontnames, newstatus)
    --[[
    The function that scans all fonts in the texmf tree, through kpathsea
    variables OPENTYPEFONTS and TTFONTS of texmf.cnf
    --]]
    if trace_progress then
        if expandpath("$OSFONTDIR"):is_empty() then
            logs.report("scanning TEXMF fonts:")
        else
            logs.report("scanning TEXMF and OS fonts:")
        end
    end
    local fontdirs = expandpath("$OPENTYPEFONTS")
    fontdirs = fontdirs .. gsub(expandpath("$TTFONTS"), "^\.", "")
    if not fontdirs:is_empty() then
        local explored_dirs = {}
        fontdirs = splitpath(fontdirs)
        -- hack, don't scan current dir
        table.remove(fontdirs, 1)
        count = 0
        for _,d in ipairs(fontdirs) do
            if not explored_dirs[d] then
                count = count + 1
                progress(count, #fontdirs)
                scan_dir(d, fontnames, status, newfontnames, newstatus, false, true)
                explored_dirs[d] = true
            end
        end
    end
end

local function read_fcdata(data)
    --[[
    this function takes raw data returned by fc-list, parses it, normalizes the
    paths and makes a list out of it.
    --]]
    local list = { }
    for line in data:lines() do
        line = line:gsub(": ", "")
        local ext = lower(match(line,"^.+%.([^/\\]-)$"))
        if ext == "otf" or ext == "ttf" or ext == "ttc" or ext == "dfont" then
            list[#list+1] = path_normalize(line:gsub(": ", ""))
        end
    end
    return list
end

local function scan_os_fonts(fontnames, status, newfontnames, newstatus)
    --[[
    This function scans the OS fonts through fontcache (fc-list), it executes
    only if OSFONTDIR is empty (which is the case under most Unix by default).
    If OSFONTDIR is non-empty, this means that the system fonts it contains have
    already been scanned, and thus we don't scan them again.
    --]]
    if expandpath("$OSFONTDIR"):is_empty() then 
        if trace_progress then
            logs.report("scanning OS fonts:")
        end
        if trace_search then
            logs.report("executing 'fc-list : file' and parsing its result...")
        end
        local data = io.popen("fc-list : file", 'r')
        local list = read_fcdata(data)
        data:close()
        if trace_search then
            logs.report("%d fonts found", #list)
        end
        count = 0
        for _,fnt in ipairs(list) do
            count = count + 1
            progress(count, #list)
            load_font(fnt, fontnames, status, newfontnames, newstatus, false)
        end
    end
end

local function fontnames_init()
    return {
        mappings  = { },
        families  = { },
        version   = names.version,
    }
end

local function status_init()
    return {
        version   = names.version,
    }
end

local function update(fontnames, status, force)
    --[[
    The main function, scans everything
    - fontnames is the final table to return
    - force is whether we rebuild it from scratch or not
    - status is a table containing the current status of the database
    --]]
    if force then
        fontnames = fontnames_init()
        status = status_init()
    else
        if not fontnames or not fontnames.version or fontnames.version ~= names.version
                or not status or not status.version or status.version ~= names.version then
            fontnames = fontnames_init()
            status = status_init()
            if trace_search then
                logs.report("no font names database or old one found, generating new one")
            end
        end
    end
    local newfontnames = fontnames_init()
    local newstatus    = status_init()
    scan_texmf_tree(fontnames, status, newfontnames, newstatus)
    scan_os_fonts  (fontnames, status, newfontnames, newstatus)
    return newfontnames, newstatus
end

names.scan   = scan_dir
names.update = update