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_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 ltjs_orig_char_table = ltjs.orig_char_table
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
51 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
53 local dir_tate = luatexja.dir_table.dir_tate
54 local lang_ja = token.create('ltj@@japanese')[2]
55 ------------------------------------------------------------------------
56 -- MAIN PROCESS STEP 1: replace fonts
57 ------------------------------------------------------------------------
58 local wt, wtd = {}, {}
60 local ltjd_get_dir_count = ltjd.get_dir_count
61 local start_time_measure, stop_time_measure
62 = ltjb.start_time_measure, ltjb.stop_time_measure
64 local suppress_hyphenate_ja_aux = {}
65 suppress_hyphenate_ja_aux[id_glyph] = function(p)
66 if (has_attr(p, attr_icflag) or 0)<=0 and is_ucs_in_japanese_char(p) then
68 local pf = ltjf_replace_altfont(has_attr(p, attr_curjfnt) or getfont(p), pc)
69 setfield(p, 'font', pf); setfield(p, 'lang', lang_ja)
70 ltjs_orig_char_table[p] = pc
74 suppress_hyphenate_ja_aux[id_math] = function(p)
75 return node_end_of_math(node_next(p)) end
76 suppress_hyphenate_ja_aux[50] = function(p) return p end
77 suppress_hyphenate_ja_aux[id_whatsit] = function(p)
78 if getsubtype(p)==sid_user then
79 local uid = getfield(p, 'user_id')
81 wt[#wt+1] = p; node_remove(head, p)
83 if has_attr(p, attr_icflag)<PROCESSED_BEGIN_FLAG then
84 ltjs.list_dir = has_attr(p, attr_dir)
86 wtd[#wtd+1] = p; node_remove(head, p)
93 local function suppress_hyphenate_ja (h,t)
94 start_time_measure('ltj_hyphenate')
97 for i = 1,#wt do wt[i]=nil end
98 for i = 1,#wtd do wtd[i]=nil end
99 for i,_ in pairs(ltjs_orig_char_table) do
100 ltjs_orig_char_table[i] = nil
102 ltjs.list_dir=ltjd_get_dir_count()
104 local pfunc = suppress_hyphenate_ja_aux[getid(p)]
105 p = node_next(pfunc and pfunc(p) or p)
107 stop_time_measure('ltj_hyphenate'); start_time_measure('tex_hyphenate')
109 stop_time_measure('tex_hyphenate')
113 luatexbase.add_to_callback('hyphenate',
115 return suppress_hyphenate_ja(head)
119 -- mode: true iff this function is called from hpack_filter
120 local ltjs_report_stack_level = ltjs.report_stack_level
121 local function set_box_stack_level(head, mode)
122 local box_set, cl = 0, tex.currentgrouplevel + 1
123 for _,p in pairs(wt) do
124 if mode and getfield(p, 'value')==cl then box_set = 1 end; node_free(p)
126 ltjs_report_stack_level(tex_getcount('ltj@@stack') + box_set)
127 for _,p in pairs(wtd) do
130 if ltjs.list_dir == dir_tate then
131 for p in Dnode.traverse_id(id_glyph,to_direct(head)) do
132 if (has_attr(p, attr_icflag) or 0)<=0 and getfield(p, 'lang')==lang_ja then
133 local pfn = has_attr(p, attr_curtfnt) or getfont(p)
134 local pc = ltjs_orig_char_table[p]
135 setfield(p, 'font', ltjf_replace_altfont(pfn, pc))
139 --luatexja.ext_show_node_list(head, 'S> ', print)
144 luatexbase.add_to_callback('hpack_filter',
146 return set_box_stack_level(head, true)
147 end,'ltj.hpack_filter_pre',1)
148 luatexbase.add_to_callback('pre_linebreak_filter',
150 return set_box_stack_level(head, false)
151 end,'ltj.pre_linebreak_filter_pre',1)
153 luatexja.pretreat = {
154 set_box_stack_level = set_box_stack_level,
155 orig_char_table = orig_char_table,