summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/generic/babel-french/frenchb.lua
blob: c394d93fabf443062b1016f170f34a79283f37fc (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
--[[
   File `frenchb.lua’ generated from frenchb.dtx
         [2021/07/20 v3.5m French support from the babel system]
   Copyright © 2014-2021 Daniel Flipo
   <daniel (dot) flipo (at) free (dot) fr>
   License LPPL: see french.ldf.
--]]
local FB_punct_thin =
  {[string.byte("!")] = true,
   [string.byte("?")] = true,
   [string.byte(";")] = true}
local FB_punct_thick =
  {[string.byte(":")] = true}
local FB_punct_left =
  {[string.byte("!")] = true,
   [string.byte("?")] = true,
   [string.byte(";")] = true,
   [string.byte(":")] = true,
   [0x14]             = true,
   [0xBB]             = true}
local FB_punct_right =
  {[0x13]             = true,
   [0xAB]             = true}
local FB_punct_null =
  {[string.byte("!")] = true,
   [string.byte("?")] = true,
   [string.byte("[")] = true,
   [string.byte("(")] = true,
   [0xA0]             = true,
   [0x202F]           = true}
local FB_guil_null =
  {[0xA0]             = true,
   [0x202F]           = true}
local new_node     = node.new
local copy_node    = node.copy
local node_id      = node.id
local HLIST        = node_id("hlist")
local TEMP         = node_id("temp")
local KERN         = node_id("kern")
local GLUE         = node_id("glue")
local GLYPH        = node_id("glyph")
local PENALTY      = node_id("penalty")
local nobreak      = new_node(PENALTY)
nobreak.penalty    = 10000
local nbspace      = new_node(GLYPH)
local insert_node_before = node.insert_before
local insert_node_after  = node.insert_after
local remove_node        = node.remove
function FBget_glue(toks)
  local t = nil
  local f = string.match(toks,
                         "[^%w]hskip%s*([%d%.]*)%s*[^%w]fontdimen 2")
  if f == "" then f = 1 end
  if tonumber(f) then
     t = {tonumber(f), 0, 0}
     f = string.match(toks,    "plus%s*([%d%.]*)%s*[^%w]fontdimen 3")
     if f == "" then f = 1 end
     if tonumber(f) then
        t[2] = tonumber(f)
        f = string.match(toks, "minus%s*([%d%.]*)%s*[^%w]fontdimen 4")
        if f == "" then f = 1 end
        if tonumber(f) then
           t[3] = tonumber(f)
        end
     end
  elseif string.match(toks, "[^%w]F?B?thinspace") then
     t = {0.5, 0, 0}
  elseif string.match(toks, "[^%w]space") then
     t = {1, 1, 1}
  end
  return t
end
FBsp = {}
FBsp.thin = {}
FBsp.thin.gl = {}
FBsp.thin.gl.fr = {.5,  0,  0}  ; FBsp.thin.gl.ac = {}
FBsp.thin.ch = {}
FBsp.thin.ch.fr = 0x202F        ; FBsp.thin.ch.ac = nil
FBsp.colon = {}
FBsp.colon.gl = {}
FBsp.colon.gl.fr = { 1,  1,  1} ; FBsp.colon.gl.ac = {}
FBsp.colon.ch = {}
FBsp.colon.ch.fr = 0xA0         ; FBsp.colon.ch.ac = nil
FBsp.guill = {}
FBsp.guill.gl = {}
FBsp.guill.gl.fr = {.8, .3, .8} ; FBsp.guill.gl.ac = {}
FBsp.guill.ch = {}
FBsp.guill.ch.fr = 0xA0         ; FBsp.guill.ch.ac = nil
local font_table = {}
local function new_glue_scaled (fid,table)
  if fid > 0 and table[1] then
     local fp = font_table[fid]
     if not fp then
        local ft = font.getfont(fid)
        if ft then
           font_table[fid] = ft.parameters
           fp = font_table[fid]
        end
     end
     local gl = new_node(GLUE,0)
     if fp then
        node.setglue(gl, table[1]*fp.space,
                         table[2]*fp.space_stretch,
                         table[3]*fp.space_shrink)
        return gl
     else
        return nil
     end
  else
     return nil
  end
end
local FBspacing    = luatexbase.attributes['FB@spacing']
local addDPspace   = luatexbase.attributes['FB@addDPspace']
local addGUILspace = luatexbase.attributes['FB@addGUILspace']
local FBucsNBSP    = luatexbase.attributes['FB@ucsNBSP']
local FBdialect    = luatexbase.attributes['FB@dialect']
local has_attribute = node.has_attribute
-- Main function (to be added to the kerning callback).
local function french_punctuation (head)
  node.kerning(head)
  for item in node.traverse_id(GLYPH, head) do
    local lang = item.lang
    local char = item.char
    if (lang == FR_fr or lang == FR_ca) and
         (FB_punct_left[char] or FB_punct_right[char]) then
       local fid  = item.font
       local attr = item.attr
       local FRspacing = has_attribute(item, FBspacing)
       FRspacing = FRspacing and FRspacing > 0
       local FRucsNBSP = has_attribute(item, FBucsNBSP)
       FRucsNBSP = FRucsNBSP and FRucsNBSP > 0
       local FRdialect = has_attribute(item, FBdialect)
       FRdialect = FRdialect and FRdialect > 0
       local SIG  = has_attribute(item, addGUILspace)
       SIG = SIG and SIG >0
       if FRspacing and fid > 0 then
          if FB_punct_left[char] then
             local prev = item.prev
             local prev_id, prev_subtype, prev_char
             if prev then
                prev_id = prev.id
                prev_subtype = prev.subtype
                if prev_id == GLYPH then
                   prev_char = prev.char
                end
             end
             local is_glue = prev_id == GLUE
             local glue_wd
             if is_glue then
                glue_wd = prev.width
             end
             local realglue = is_glue and glue_wd > 1
             if FB_punct_thin[char] or FB_punct_thick[char] then
                local SBDP = has_attribute(item, addDPspace)
                local auto = SBDP and SBDP > 0
                if FB_punct_thick[char] and auto then
                   local next = item.next
                   local next_id
                   if next then
                      next_id = next.id
                   end
                   if next_id and next_id == GLYPH then
                      auto = false
                   end
                end
                if auto then
                   if (prev_char and FB_punct_null[prev_char]) or
                      (is_glue and glue_wd <= 1) or
                      (prev_id == HLIST and prev_subtype == 3) or
                      (prev_id == TEMP) then
                      auto = false
                   end
                end
                local fbglue
                local t
                if FB_punct_thick[char] then
                   if FRdialect then
                      t = FBsp.colon.gl.ac
                      nbspace.char = FBsp.colon.ch.ac
                   else
                      t = FBsp.colon.gl.fr
                      nbspace.char = FBsp.colon.ch.fr
                   end
                else
                   if FRdialect then
                      t = FBsp.thin.gl.ac
                      nbspace.char = FBsp.thin.ch.ac
                   else
                      t = FBsp.thin.gl.fr
                      nbspace.char = FBsp.thin.ch.fr
                   end
                end
                fbglue = new_glue_scaled(fid, t)
                if (realglue or auto) and fbglue then
                   if realglue then
                      head = remove_node(head,prev,true)
                   end
                   if (FRucsNBSP) then
                      nbspace.font = fid
                      nbspace.attr = attr
                      insert_node_before(head,item,copy_node(nbspace))
                   else
                      nobreak.attr = attr
                      fbglue.attr  = attr
                      insert_node_before(head,item,copy_node(nobreak))
                      insert_node_before(head,item,copy_node(fbglue))
                   end
                end
             elseif SIG then
                local addgl = (prev_char and
                               not FB_guil_null[prev_char])
                              or
                              (not prev_char and
                               prev_id ~= TEMP and
                               not (prev_id == HLIST and
                                    prev_subtype == 3)
                              )
                if is_glue and glue_wd <= 1 then
                   addgl = false
                end
                local t = FBsp.guill.gl.fr
                nbspace.char = FBsp.guill.ch.fr
                if FRdialect then
                   t = FBsp.guill.gl.ac
                   nbspace.char = FBsp.guill.ch.ac
                end
                local fbglue = new_glue_scaled(fid, t)
                if addgl and fbglue then
                   if is_glue then
                      head = remove_node(head,prev,true)
                   end
                   if (FRucsNBSP) then
                      nbspace.font = fid
                      nbspace.attr = attr
                      insert_node_before(head,item,copy_node(nbspace))
                   else
                      nobreak.attr = attr
                      fbglue.attr  = attr
                      insert_node_before(head,item,copy_node(nobreak))
                      insert_node_before(head,item,copy_node(fbglue))
                   end
                end
             end
          elseif SIG then
             local next = item.next
             local next_id, next_subtype, next_char, nextnext, kern_wd
             if next then
                next_id = next.id
                next_subtype = next.subtype
                if next_id == GLYPH then
                   next_char = next.char
                elseif next_id == KERN then
                   kern_wd = next.kern
                   if kern_wd == 0 then
                      nextnext = next.next
                      if nextnext then
                         next = nextnext
                         next_id = nextnext.id
                         next_subtype = nextnext.subtype
                         if next_id == GLYPH then
                            next_char = nextnext.char
                         end
                      end
                   end
                end
             end
             local is_glue = next_id == GLUE
             if is_glue then
                glue_wd = next.width
             end
             local addgl = (next_char and not FB_guil_null[next_char])
                           or (next and not next_char)
             if is_glue and glue_wd == 0 then
                addgl = false
             end
             local fid = item.font
             local t = FBsp.guill.gl.fr
             nbspace.char = FBsp.guill.ch.fr
             if FRdialect then
                t = FBsp.guill.gl.ac
                nbspace.char = FBsp.guill.ch.ac
             end
             local fbglue = new_glue_scaled(fid, t)
             if addgl and fbglue then
                if is_glue then
                   head = remove_node(head,next,true)
                end
                if (FRucsNBSP) then
                   nbspace.font = fid
                   nbspace.attr = attr
                   insert_node_after(head, item, copy_node(nbspace))
                else
                   nobreak.attr = attr
                   fbglue.attr  = attr
                   insert_node_after(head, item, copy_node(fbglue))
                   insert_node_after(head, item, copy_node(nobreak))
                end
             end
          end
       end
    end
  end
  return head
end
return french_punctuation
--  End of File frenchb.lua.