2 -- luatexja/ltj-pretreat.lua
5 luatexja.load_module('charrange'); local ltjc = luatexja.charrange
6 luatexja.load_module('stack'); local ltjs = luatexja.stack
7 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
9 local floor = math.floor
10 local has_attr = node.has_attribute
11 local set_attr = node.set_attribute
12 local node_traverse = node.traverse
13 local node_type = node.type
14 local node_remove = node.remove
15 local node_next = node.next
16 local node_free = node.free
17 local tex_getcount = tex.getcount
19 local id_glyph = node.id('glyph')
20 local id_math = node.id('math')
21 local id_whatsit = node.id('whatsit')
22 local sid_user = node.subtype('user_defined')
24 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
25 local attr_icflag = luatexbase.attributes['ltj@icflag']
27 local ltjc_is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char
28 local ltjf_replace_altfont = ltjf.replace_altfont
29 local attr_orig_char = luatexbase.attributes['ltj@origchar']
30 local STCK = luatexja.userid_table.STCK
32 ------------------------------------------------------------------------
33 -- MAIN PROCESS STEP 1: replace fonts
34 ------------------------------------------------------------------------
38 local end_math = node.end_of_math or
40 while p and p.id~=id_math do p = node_next(p) end
44 local suppress_hyphenate_ja_aux = {}
45 suppress_hyphenate_ja_aux[id_glyph] = function(p)
46 if (has_attr(p, attr_icflag) or 0)<=0 and ltjc_is_ucs_in_japanese_char(p) then
48 local pf = ltjf_replace_altfont(has_attr(p, attr_curjfnt) or p.font, pc)
49 p.font = pf; set_attr(p, attr_curjfnt, pf)
50 p.subtype = floor(p.subtype*0.5)*2
51 set_attr(p, attr_orig_char, pc)
55 suppress_hyphenate_ja_aux[id_math] = function(p) return end_math(node_next(p)) end
56 suppress_hyphenate_ja_aux[id_whatsit] = function(p)
57 if p.subtype==sid_user and p.user_id==STCK then
58 wt[#wt+1] = p; head = node_remove(head, p)
63 local function suppress_hyphenate_ja (h)
67 local pfunc = suppress_hyphenate_ja_aux[p.id]
68 if pfunc then p = pfunc(p) end
75 luatexbase.add_to_callback('hyphenate',
77 return suppress_hyphenate_ja(head)
81 -- mode: true iff this function is called from hpack_filter
82 local function set_box_stack_level(head, mode)
83 local box_set, cl = 0, tex.currentgrouplevel + 1
84 for _,p in pairs(wt) do
85 if mode and p.value==cl then box_set = 1 end; node_free(p)
87 ltjs.report_stack_level(tex_getcount('ltj@@stack') + box_set)
92 luatexbase.add_to_callback('hpack_filter',
94 return set_box_stack_level(head, true)
95 end,'ltj.hpack_filter_pre',1)
96 luatexbase.add_to_callback('pre_linebreak_filter',
98 return set_box_stack_level(head, false)
99 end,'ltj.pre_linebreak_filter_pre',1)
101 luatexja.pretreat = {
102 set_box_stack_level = set_box_stack_level,