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 to_node = node.direct.tonode
12 local to_direct = node.direct.todirect
14 local setfield = node.direct.setfield
15 local getid = node.direct.getid
16 local getfont = node.direct.getfont
17 local getchar = node.direct.getchar
18 local getfield = node.direct.getfield
19 local getsubtype = node.direct.getsubtype
20 local getlang = node.direct.getlang or function (n) return getfield(n,'lang') end
23 local floor = math.floor
24 local has_attr = node.direct.has_attribute
25 local set_attr = node.direct.set_attribute
26 local node_traverse = node.direct.traverse
27 local node_remove = node.direct.remove
28 local node_next = node.direct.getnext
29 local node_free = node.direct.free
30 local node_end_of_math = node.direct.end_of_math
31 local tex_getcount = tex.getcount
33 local id_glyph = node.id('glyph')
34 local id_math = node.id('math')
35 local id_whatsit = node.id('whatsit')
36 local sid_user = node.subtype('user_defined')
38 local attr_dir = luatexbase.attributes['ltj@dir']
39 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
40 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
41 local attr_icflag = luatexbase.attributes['ltj@icflag']
43 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
44 local ltjs_orig_char_table = ltjs.orig_char_table
45 local ltjf_replace_altfont = ltjf.replace_altfont
46 local STCK = luatexja.userid_table.STCK
47 local DIR = luatexja.userid_table.DIR
48 local JA_AL_BDD = luatexja.userid_table.JA_AL_BDD
49 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
51 local dir_tate = luatexja.dir_table.dir_tate
52 local lang_ja = luatexja.lang_ja
54 local setlang = node.direct.setlang or function(n,l) setfield(n,'lang',l) end
55 local setfont = node.direct.setfont or function(n,l) setfield(n,'font',l) end
56 local setchar = node.direct.setchar or function(n,l) setfield(n,'char',l) end
58 ------------------------------------------------------------------------
59 -- MAIN PROCESS STEP 1: replace fonts
60 ------------------------------------------------------------------------
61 local wt, wtd = {}, {}
63 local ltjd_get_dir_count = ltjd.get_dir_count
64 local start_time_measure, stop_time_measure
65 = ltjb.start_time_measure, ltjb.stop_time_measure
67 local suppress_hyphenate_ja_aux = {
68 [id_math] = function(p) return node_next(node_end_of_math(node_next(p))) end,
69 [id_whatsit] = function(p)
70 if getsubtype(p)==sid_user then
71 local uid = getfield(p, 'user_id')
73 wt[#wt+1] = p; node_remove(head, p)
75 if has_attr(p, attr_icflag)<PROCESSED_BEGIN_FLAG then
76 ltjs.list_dir = has_attr(p, attr_dir)
77 else -- こっちのケースは通常使用では起こらない
78 wtd[#wtd+1] = p; node_remove(head, p)
85 setmetatable(suppress_hyphenate_ja_aux,
87 __index = function() return node_next end,
89 local id_boundary = node.id('boundary')
90 local node_new, insert_before = node.direct.new, node.direct.insert_before
91 local setsubtype = node.direct.setsubtype or function(n,l) setfield(n,'subtype',l) end
92 local function suppress_hyphenate_ja (h)
93 start_time_measure('ltj_hyphenate')
95 for i = 1,#wt do wt[i]=nil end
96 for i = 1,#wtd do wtd[i]=nil end
97 for i,_ in pairs(ltjs_orig_char_table) do
98 ltjs_orig_char_table[i] = nil
100 ltjs.list_dir=ltjd_get_dir_count()
104 local pid, prev_chartype = getid(p), 0
105 -- prev_chartype: 0: not char 1: ALchar 2: JAchar
106 while pid==id_glyph do
107 local pc = getchar(p)
108 if has_attr(p, attr_icflag, 0) and is_ucs_in_japanese_char(p, pc) then
109 if prev_chartype==1 then
110 local b = node_new(id_whatsit,sid_user);
111 setfield(b, 'type', 100); setfield(b, 'user_id', JA_AL_BDD);
112 insert_before(head, p, b)
114 local pf = has_attr(p, attr_curjfnt)
115 pf = (pf and pf>0 and pf) or getfont(p)
116 setfont(p, ltjf_replace_altfont(pf, pc))
118 ltjs_orig_char_table[p], prev_chartype = pc, 2
119 elseif prev_chartype==2 then
120 local b = node_new(id_whatsit,sid_user);
121 setfield(b, 'type', 100); setfield(b, 'user_id', JA_AL_BDD);
122 insert_before(head, p, b); prev_chartype = 1
123 else prev_chartype = 1
125 p = node_next(p); pid = getid(p)
127 p = (suppress_hyphenate_ja_aux[pid])(p)
130 stop_time_measure('ltj_hyphenate'); start_time_measure('tex_hyphenate')
131 lang.hyphenate(h, nil)
132 stop_time_measure('tex_hyphenate')
136 ltjb.add_to_callback('hyphenate',
138 return suppress_hyphenate_ja(head)
142 -- mode: true iff this function is called from hpack_filter
143 local ltjs_report_stack_level = ltjs.report_stack_level
144 local ltjf_font_metric_table = ltjf.font_metric_table
145 local font_getfont = font.getfont
146 local function set_box_stack_level(head, mode)
147 local box_set, cl = 0, tex.currentgrouplevel + 1
149 for _,p in pairs(wt) do
150 if getfield(p, 'value')==cl then box_set = 1 end; node_free(p)
153 for _,p in pairs(wt) do node_free(p) end
155 ltjs_report_stack_level(tex_getcount('ltj@@stack') + box_set)
156 for _,p in pairs(wtd) do
159 if ltjs.list_dir == dir_tate then
160 for p in node.direct.traverse_id(id_glyph,to_direct(head)) do
161 if has_attr(p, attr_icflag, 0) and getlang(p)==lang_ja then
162 local nf = ltjf_replace_altfont( has_attr(p, attr_curtfnt) or getfont(p) , ltjs_orig_char_table[p])
164 if ltjf_font_metric_table[nf].vert_activated then
165 local pc = getchar(p)
166 pc = ltjf_font_metric_table[nf].vform[pc]
167 if pc then setchar(p, pc) end
176 ltjb.add_to_callback('hpack_filter',
178 return set_box_stack_level(head, true)
179 end,'ltj.set_stack_level',1)
180 ltjb.add_to_callback('pre_linebreak_filter',
182 return set_box_stack_level(head, false)
183 end,'ltj.set_stack_level',1)
185 luatexja.pretreat = {
186 set_box_stack_level = set_box_stack_level,
187 orig_char_table = orig_char_table,