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_traverse_id = Dnode.traverse_id
30 local node_remove =luatexja.Dnode_remove -- Dnode.remove
31 local node_next = (Dnode ~= node) and Dnode.getnext or node.next
32 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
33 local node_free = Dnode.free
34 local node_end_of_math = Dnode.end_of_math
35 local tex_getcount = tex.getcount
37 local id_glyph = node.id('glyph')
38 local id_math = node.id('math')
39 local id_whatsit = node.id('whatsit')
40 local sid_user = node.subtype('user_defined')
42 local attr_dir = luatexbase.attributes['ltj@dir']
43 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
44 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
45 local attr_icflag = luatexbase.attributes['ltj@icflag']
47 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
48 local ltjd_get_vert_glyph = ltjd.get_vert_glyph
49 local ltjf_replace_altfont = ltjf.replace_altfont
50 local attr_orig_char = luatexbase.attributes['ltj@origchar']
51 local STCK = luatexja.userid_table.STCK
52 local DIR = luatexja.userid_table.DIR
53 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
55 local dir_tate = luatexja.dir_table.dir_tate
57 ------------------------------------------------------------------------
58 -- MAIN PROCESS STEP 1: replace fonts
59 ------------------------------------------------------------------------
60 local wt, wtd = {}, {}
62 local start_time_measure, stop_time_measure
63 = ltjb.start_time_measure, ltjb.stop_time_measure
66 local suppress_hyphenate_ja_aux_glyph = function(p)
67 if (has_attr(p, attr_icflag) or 0)<=0 and is_ucs_in_japanese_char(p) then
69 local pof, pcj = getfont(p), has_attr(p, attr_curjfnt)
70 local pf = ltjf_replace_altfont(pcj or pof, pc)
71 if pof~=pf then setfield(p, 'font', pf) end
72 if pcj~=pf then set_attr(p, attr_curjfnt, pf) end
73 setfield(p, 'subtype', floor(getsubtype(p)*0.5)*2)
74 set_attr(p, attr_orig_char, pc)
77 local suppress_hyphenate_ja_aux_whatsit = function(p)
78 if getsubtype(p)==sid_user then
79 local uid = getfield(p, 'user_id')
83 if has_attr(p, attr_icflag)<PROCESSED_BEGIN_FLAG then
84 ltjs.list_dir = has_attr(p, attr_dir)
91 local function suppress_hyphenate_ja (h)
92 start_time_measure('ltj_hyphenate')
94 for i=1,#wt do wt[i]=nil end; for i=1,#wtd do wtd[i]=nil end
95 ltjs.list_dir=ltjd.get_dir_count()
96 for p in node_traverse_id(id_glyph, head) do --while p do
97 suppress_hyphenate_ja_aux_glyph(p)
99 for p in node_traverse_id(id_whatsit, head) do --while p do
100 suppress_hyphenate_ja_aux_whatsit(p)
102 for i=1,#wt do head = node_remove(head, wt[i]) end
104 local q = wtd[i]; head = node_remove(head, q); node_free(q)
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 function set_box_stack_level(head, mode)
121 local box_set, cl = 0, tex.currentgrouplevel + 1
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 is_dir_tate = ltjs.list_dir == dir_tate
129 for p in node_traverse_id(id_glyph,to_direct(head)) do
130 if (has_attr(p, attr_icflag) or 0)<=0 and has_attr(p, attr_curjfnt)==getfont(p) then
131 local pfn = has_attr(p, attr_curtfnt) or getfont(p)
132 local pc = getchar(p)
133 local pf = ltjf_replace_altfont(pfn, pc)
134 set_attr(p, attr_dir, pc)
135 pc = ltjd_get_vert_glyph(pf, pc) or pc
136 setfield(p, 'char', pc); set_attr(p, attr_orig_char, pc)
137 setfield(p, 'font', pf); set_attr(p, attr_curjfnt, pf)
145 luatexbase.add_to_callback('hpack_filter',
147 return set_box_stack_level(head, true)
148 end,'ltj.hpack_filter_pre',1)
149 luatexbase.add_to_callback('pre_linebreak_filter',
151 return set_box_stack_level(head, false)
152 end,'ltj.pre_linebreak_filter_pre',1)
154 luatexja.pretreat = {
155 set_box_stack_level = set_box_stack_level,