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_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
57 ------------------------------------------------------------------------
58 -- MAIN PROCESS STEP 1: replace fonts
59 ------------------------------------------------------------------------
62 local start_time_measure, stop_time_measure
63 = ltjb.start_time_measure, ltjb.stop_time_measure
66 local suppress_hyphenate_ja_aux = {}
67 suppress_hyphenate_ja_aux[id_glyph] = function(p)
68 if (has_attr(p, attr_icflag) or 0)<=0 and is_ucs_in_japanese_char(p) then
70 local pf = ltjf_replace_altfont(has_attr(p, attr_curjfnt) or getfont(p), pc)
71 setfield(p, 'font', pf); set_attr(p, attr_curjfnt, pf)
72 setfield(p, 'subtype', floor(getsubtype(p)*0.5)*2)
73 set_attr(p, attr_orig_char, pc)
77 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)
86 if has_attr(p, attr_icflag)<PROCESSED_BEGIN_FLAG then
87 ltjs.list_dir = getfield(p, 'value')
90 wtd[#wtd+1] = p; head, q = node_remove(head, p)
97 local function suppress_hyphenate_ja (h)
98 start_time_measure('ltj_hyphenate')
99 local p = to_direct(h)
100 wt, wtd, head = {}, {}, p
101 ltjs.list_dir=ltjd.get_dir_count()
103 local pfunc = suppress_hyphenate_ja_aux[getid(p)]
104 if pfunc then p = pfunc(p) end
108 stop_time_measure('ltj_hyphenate'); start_time_measure('tex_hyphenate')
110 stop_time_measure('tex_hyphenate')
114 luatexbase.add_to_callback('hyphenate',
116 return suppress_hyphenate_ja(head)
120 -- mode: true iff this function is called from hpack_filter
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 for _,p in pairs(wtd) do
129 ltjs.report_stack_level(tex_getcount('ltj@@stack') + box_set)
130 is_dir_tate = ltjs.list_dir == dir_tate
132 for p in Dnode.traverse_id(id_glyph,to_direct(head)) do
133 if (has_attr(p, attr_icflag) or 0)<=0 and has_attr(p, attr_curjfnt)==getfont(p) then
134 local pfn = has_attr(p, attr_curtfnt) or getfont(p)
135 local pc = getchar(p)
136 local pf = ltjf_replace_altfont(pfn, pc)
137 set_attr(p, attr_dir, pc)
138 pc = ltjd_get_vert_glyph(pf, pc) or pc
139 setfield(p, 'char', pc); set_attr(p, attr_orig_char, pc)
140 setfield(p, 'font', pf); set_attr(p, attr_curjfnt, pf)
148 luatexbase.add_to_callback('hpack_filter',
150 return set_box_stack_level(head, true)
151 end,'ltj.hpack_filter_pre',1)
152 luatexbase.add_to_callback('pre_linebreak_filter',
154 return set_box_stack_level(head, false)
155 end,'ltj.pre_linebreak_filter_pre',1)
157 luatexja.pretreat = {
158 set_box_stack_level = set_box_stack_level,