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 = Dnode.remove
30 local node_next = (Dnode ~= node) and Dnode.getnext or node.next
31 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
32 local node_free = Dnode.free
33 local node_end_of_math = Dnode.end_of_math
34 local tex_getcount = tex.getcount
36 local id_glyph = node.id('glyph')
37 local id_math = node.id('math')
38 local id_whatsit = node.id('whatsit')
39 local sid_user = node.subtype('user_defined')
41 local attr_dir = luatexbase.attributes['ltj@dir']
42 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
43 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
44 local attr_icflag = luatexbase.attributes['ltj@icflag']
46 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
47 local ltjd_get_vert_glyph = ltjd.get_vert_glyph
48 local ltjf_replace_altfont = ltjf.replace_altfont
49 local attr_orig_char = luatexbase.attributes['ltj@origchar']
50 local STCK = luatexja.userid_table.STCK
51 local DIR = luatexja.userid_table.DIR
52 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
54 local dir_tate = luatexja.dir_table.dir_tate
56 ------------------------------------------------------------------------
57 -- MAIN PROCESS STEP 1: replace fonts
58 ------------------------------------------------------------------------
59 local wt, wtd = {}, {}
61 local start_time_measure, stop_time_measure
62 = 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)
77 return node_end_of_math(node_next(p)) end
78 suppress_hyphenate_ja_aux[50] = function(p) return p end
79 suppress_hyphenate_ja_aux[id_whatsit] = function(p)
80 if getsubtype(p)==sid_user then
81 local uid = getfield(p, 'user_id')
83 wt[#wt+1] = p; node_remove(head, p)
85 if has_attr(p, attr_icflag)<PROCESSED_BEGIN_FLAG then
86 ltjs.list_dir = has_attr(p, attr_dir)
87 if not node_next(p) and real_head==p then
91 wtd[#wtd+1] = p; node_remove(head, p)
97 local function suppress_hyphenate_ja (h)
98 start_time_measure('ltj_hyphenate')
99 head = to_direct(h); real_head = node_next(head)
101 for i = 1,#wt do wt[i]=nil end
102 for i = 1,#wtd do wtd[i]=nil end
103 ltjs.list_dir=ltjd.get_dir_count()
106 local pfunc = suppress_hyphenate_ja_aux[getid(p)]
107 if pfunc then p, flag = pfunc(p) end
109 stop_time_measure('ltj_hyphenate')
114 stop_time_measure('ltj_hyphenate'); start_time_measure('tex_hyphenate')
116 stop_time_measure('tex_hyphenate')
120 luatexbase.add_to_callback('hyphenate',
122 return suppress_hyphenate_ja(head)
126 -- mode: true iff this function is called from hpack_filter
127 local function set_box_stack_level(head, mode)
128 local box_set, cl = 0, tex.currentgrouplevel + 1
129 for _,p in pairs(wt) do
130 if mode and getfield(p, 'value')==cl then box_set = 1 end; node_free(p)
132 ltjs.report_stack_level(tex_getcount('ltj@@stack') + box_set)
133 for _,p in pairs(wtd) do
136 is_dir_tate = ltjs.list_dir == dir_tate
138 for p in Dnode.traverse_id(id_glyph,to_direct(head)) do
139 if (has_attr(p, attr_icflag) or 0)<=0 and has_attr(p, attr_curjfnt)==getfont(p) then
140 local pfn = has_attr(p, attr_curtfnt) or getfont(p)
141 local pc = getchar(p)
142 local pf = ltjf_replace_altfont(pfn, pc)
143 set_attr(p, attr_dir, pc)
144 pc = ltjd_get_vert_glyph(pf, pc) or pc
145 setfield(p, 'char', pc); set_attr(p, attr_orig_char, pc)
146 setfield(p, 'font', pf); set_attr(p, attr_curjfnt, pf)
154 luatexbase.add_to_callback('hpack_filter',
156 return set_box_stack_level(head, true)
157 end,'ltj.hpack_filter_pre',1)
158 luatexbase.add_to_callback('pre_linebreak_filter',
160 return set_box_stack_level(head, false)
161 end,'ltj.pre_linebreak_filter_pre',1)
163 luatexja.pretreat = {
164 set_box_stack_level = set_box_stack_level,