2 -- luatexja/ltj-pretreat.lua
5 luatexja.load_module('base'); local ltjb = luatexja.base
6 luatexja.load_module('charrange'); local ltjc = luatexja.charrange
7 luatexja.load_module('stack'); local ltjs = luatexja.stack
8 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
9 luatexja.load_module('direction'); local ltjd = luatexja.direction
11 local Dnode = node.direct or node
13 local nullfunc = function(n) return n end
14 local to_node = (Dnode ~= node) and Dnode.tonode or nullfunc
15 local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
17 local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
18 local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
19 local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
20 local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
21 local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
22 local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
25 local floor = math.floor
26 local has_attr = Dnode.has_attribute
27 local set_attr = Dnode.set_attribute
28 local node_traverse = Dnode.traverse
29 local node_remove =luatexja.Dnode_remove -- Dnode.remove
30 local node_next = (Dnode ~= node) and Dnode.getnext or node.next
31 local node_free = Dnode.free
32 local node_end_of_math = Dnode.end_of_math
33 local tex_getcount = tex.getcount
35 local id_glyph = node.id('glyph')
36 local id_math = node.id('math')
37 local id_whatsit = node.id('whatsit')
38 local sid_user = node.subtype('user_defined')
40 local attr_dir = luatexbase.attributes['ltj@dir']
41 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
42 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
43 local attr_icflag = luatexbase.attributes['ltj@icflag']
45 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
46 local ltjd_get_vert_glyph = ltjd.get_vert_glyph
47 local ltjf_replace_altfont = ltjf.replace_altfont
48 local attr_orig_char = luatexbase.attributes['ltj@origchar']
49 local STCK = luatexja.userid_table.STCK
50 local DIR = luatexja.userid_table.DIR
55 ------------------------------------------------------------------------
56 -- MAIN PROCESS STEP 1: replace fonts
57 ------------------------------------------------------------------------
60 local start_time_measure, stop_time_measure
61 = ltjb.start_time_measure, ltjb.stop_time_measure
65 local suppress_hyphenate_ja_aux = {}
66 suppress_hyphenate_ja_aux[id_glyph] = function(p)
67 if (has_attr(p, attr_icflag) or 0)<=0 and is_ucs_in_japanese_char(p) then
69 local pf = ltjf_replace_altfont(has_attr(p, attr_curjfnt) or getfont(p), pc)
70 setfield(p, 'font', pf); set_attr(p, attr_curjfnt, pf)
71 setfield(p, 'subtype', floor(getsubtype(p)*0.5)*2)
72 set_attr(p, attr_orig_char, pc)
76 suppress_hyphenate_ja_aux[id_math] = function(p)
78 return node_end_of_math(node_next(p)) end
79 suppress_hyphenate_ja_aux[50] = function(p) return p end
80 suppress_hyphenate_ja_aux[id_whatsit] = function(p)
81 if getsubtype(p)==sid_user then
82 local uid = getfield(p, 'user_id')
84 wt[#wt+1] = p; head = node_remove(head, p)
85 elseif uid==DIR and not dir_frozen then
86 ltjs.list_dir = getfield(p, 'value')
93 local function suppress_hyphenate_ja (h)
94 start_time_measure('ltj_hyphenate')
95 local p = to_direct(h)
96 wt, head, dir_frozen = {}, p, false
97 ltjs.list_dir=ltjd.get_dir_count()
99 local pfunc = suppress_hyphenate_ja_aux[getid(p)]
100 if pfunc then p = pfunc(p) else dir_frozen = true end
104 stop_time_measure('ltj_hyphenate'); start_time_measure('tex_hyphenate')
106 stop_time_measure('tex_hyphenate')
110 luatexbase.add_to_callback('hyphenate',
112 return suppress_hyphenate_ja(head)
116 -- mode: true iff this function is called from hpack_filter
117 local function set_box_stack_level(head, mode)
118 local box_set, cl = 0, tex.currentgrouplevel + 1
119 for _,p in pairs(wt) do
120 if mode and getfield(p, 'value')==cl then box_set = 1 end; node_free(p)
122 ltjs.report_stack_level(tex_getcount('ltj@@stack') + box_set)
123 is_dir_tate = ltjs.list_dir == dir_tate
125 for p in Dnode.traverse_id(id_glyph,to_direct(head)) do
126 if (has_attr(p, attr_icflag) or 0)<=0 and has_attr(p, attr_curjfnt)==getfont(p) then
127 local pfn = has_attr(p, attr_curtfnt) or getfont(p)
128 local pc = getchar(p)
129 local pf = ltjf_replace_altfont(pfn, pc)
130 set_attr(p, attr_dir, pc)
131 pc = ltjd_get_vert_glyph(pf, pc) or pc
132 setfield(p, 'char', pc); set_attr(p, attr_orig_char, pc)
133 setfield(p, 'font', pf); set_attr(p, attr_curjfnt, pf)
141 luatexbase.add_to_callback('hpack_filter',
143 return set_box_stack_level(head, true)
144 end,'ltj.hpack_filter_pre',1)
145 luatexbase.add_to_callback('pre_linebreak_filter',
147 return set_box_stack_level(head, false)
148 end,'ltj.pre_linebreak_filter_pre',1)
150 luatexja.pretreat = {
151 set_box_stack_level = set_box_stack_level,