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
|
if not modules then modules = { } end modules ['node-acc'] = {
version = 1.001,
comment = "companion to node-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local traverse_nodes, traverse_id, has_attribute, copy_node = node.traverse, node.traverse_id, node.has_attribute, node.copy
nodes.accessibility = nodes.accessibility or { }
local nodecodes = nodes.nodecodes
local glue = nodecodes.glue
local glyph = nodecodes.glyph
local hlist = nodecodes.hlist
local vlist = nodecodes.vlist
local function injectspaces(head)
local p
for n in traverse_nodes(head) do
local id = n.id
if id == glue then -- todo: check for subtype related to spacing (13/14 but most seems to be 0)
-- local at = has_attribute(n,attribute)
-- if at then
if p and p.id == glyph then
local g = copy_node(p)
local s = copy_node(n.spec)
g.char, n.spec = 32, s
p.next, g.prev = g, p
g.next, n.prev = n, g
s.width = s.width - g.width
end
-- end
elseif id == hlist or id == vlist then
injectspaces(n.list,attribute)
end
p = n
end
return head, true
end
nodes.accessibility.handler = injectspaces
-- nodes.accessibility.handler(tex.box[255].list)
-- todo:
--~ local a_hyphenated = attributes.private('hyphenated')
--~
--~ local hyphenated, codes = { }, { }
--~
--~ local function compact(n)
--~ local t = { }
--~ for n in traverse_id(glyph,n) do
--~ t[#t+1] = utfchar(n.char) -- check for unicode
--~ end
--~ return concat(t,"")
--~ end
--~
--~ local function injectspans(head)
--~ for n in traverse_nodes(head) do
--~ local id = n.id
--~ if id == disc then
--~ local r, p = n.replace, n.pre
--~ if r and p then
--~ local str = compact(r)
--~ local hsh = hyphenated[str]
--~ if not hsh then
--~ hsh = #codes + 1
--~ hyphenated[str] = hsh
--~ codes[hsh] = str
--~ end
--~ set_attribute(n,a_hyphenated,hsh)
--~ end
--~ elseif id == hlist or id == vlist then
--~ injectspans(n.list)
--~ end
--~ end
--~ return head, true
--~ end
--~
--~ nodes.injectspans = injectspans
--~
--~ tasks.appendaction("processors", "words", "nodes.injectspans")
--~
--~ local function injectspans(head)
--~ for n in traverse_nodes(head) do
--~ local id = n.id
--~ if id == disc then
--~ local a = has_attribute(n,a_hyphenated)
--~ if a then
--~ local str = codes[a]
--~ local b = new_pdfliteral(format("/Span << /ActualText %s >> BDC", lpdf.tosixteen(str)))
--~ local e = new_pdfliteral("EMC")
--~ node.insert_before(head,n,b)
--~ node.insert_after(head,n,e)
--~ end
--~ elseif id == hlist or id == vlist then
--~ injectspans(n.list)
--~ end
--~ end
--~ end
|
