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
8 luatexja.load_module('direction'); local ltjd = luatexja.direction
10 local Dnode = node.direct or node
12 local nullfunc = function(n) return n end
13 local to_node = (Dnode ~= node) and Dnode.tonode or nullfunc
14 local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
16 local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
17 local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
18 local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
19 local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
20 local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
21 local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
24 local floor = math.floor
25 local has_attr = Dnode.has_attribute
26 local set_attr = Dnode.set_attribute
27 local node_traverse = Dnode.traverse
28 local node_remove =luatexja.Dnode_remove -- Dnode.remove
29 local node_next = (Dnode ~= node) and Dnode.getnext or node.next
30 local node_free = Dnode.free
31 local node_end_of_math = Dnode.end_of_math
32 local tex_getcount = tex.getcount
34 local id_glyph = node.id('glyph')
35 local id_math = node.id('math')
36 local id_whatsit = node.id('whatsit')
37 local sid_user = node.subtype('user_defined')
39 local attr_dir = luatexbase.attributes['ltj@dir']
40 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
41 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
42 local attr_icflag = luatexbase.attributes['ltj@icflag']
44 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
45 local ltjd_get_vert_glyph = ltjd.get_vert_glyph
46 local ltjf_replace_altfont = ltjf.replace_altfont
47 local attr_orig_char = luatexbase.attributes['ltj@origchar']
48 local STCK = luatexja.userid_table.STCK
49 local DIR = luatexja.stack_table_index.DIR
54 ------------------------------------------------------------------------
55 -- MAIN PROCESS STEP 1: replace fonts
56 ------------------------------------------------------------------------
61 local suppress_hyphenate_ja_aux = {}
62 suppress_hyphenate_ja_aux[id_glyph] = function(p)
63 if (has_attr(p, attr_icflag) or 0)<=0 and is_ucs_in_japanese_char(p) then
64 local pf = has_attr(p, attr_curjfnt) or getfont(p)
65 setfield(p, 'font', pf); set_attr(p, attr_curjfnt, pf)
66 setfield(p, 'subtype', floor(getsubtype(p)*0.5)*2)
70 suppress_hyphenate_ja_aux[id_math] = function(p) return node_end_of_math(node_next(p)) end
71 suppress_hyphenate_ja_aux[id_whatsit] = function(p)
72 if getsubtype(p)==sid_user and getfield(p, 'user_id')==STCK then
73 wt[#wt+1] = p; head = node_remove(head, p)
78 local function suppress_hyphenate_ja (h)
79 local p = to_direct(h)
82 local pfunc = suppress_hyphenate_ja_aux[getid(p)]
83 if pfunc then p = pfunc(p) end
91 luatexbase.add_to_callback('hyphenate',
93 return suppress_hyphenate_ja(head)
97 -- mode: true iff this function is called from hpack_filter
98 local function set_box_stack_level(head, mode)
99 local box_set, cl = 0, tex.currentgrouplevel + 1
100 for _,p in pairs(wt) do
101 if mode and getfield(p, 'value')==cl then box_set = 1 end; node_free(p)
103 ltjs.report_stack_level(tex_getcount('ltj@@stack') + box_set)
104 is_dir_tate = ltjs.table_current_stack[DIR] == dir_tate
105 local jfntattr = is_dir_tate and attr_curtfnt or attr_curjfnt
106 for p in Dnode.traverse_id(id_glyph,to_direct(head)) do
107 if has_attr(p, attr_curjfnt)==getfont(p) then
108 local pfn = has_attr(p, jfntattr) or getfont(p)
109 local pc = getchar(p)
110 local pf = ltjf_replace_altfont(pfn, pc)
112 set_attr(p, attr_dir, pc)
113 pc = ltjd_get_vert_glyph(pf, pc) or pc
115 setfield(p, 'char', pc); set_attr(p, attr_orig_char, pc)
116 setfield(p, 'font', pf); set_attr(p, attr_curjfnt, pf)
123 luatexbase.add_to_callback('hpack_filter',
125 return set_box_stack_level(head, true)
126 end,'ltj.hpack_filter_pre',1)
127 luatexbase.add_to_callback('pre_linebreak_filter',
129 return set_box_stack_level(head, false)
130 end,'ltj.pre_linebreak_filter_pre',1)
132 luatexja.pretreat = {
133 set_box_stack_level = set_box_stack_level,