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--[[
File `frenchb.lua’ generated from frenchb.dtx
[2024-06-26 v3.6b French support from the babel system]
Copyright © 2014-2024 Daniel Flipo
<daniel (dot) flipo (at) free (dot) fr>
License LPPL: see french.ldf.
--]]
local FB_punct_thin =
{[string.byte("!")] = true,
[string.byte("?")] = true,
[string.byte(";")] = true}
local FB_punct_thick =
{[string.byte(":")] = true}
local FB_punct_left =
{[string.byte("!")] = true,
[string.byte("?")] = true,
[string.byte(";")] = true,
[string.byte(":")] = true,
[0x14] = true,
[0xBB] = true}
local FB_punct_right =
{[0x13] = true,
[0xAB] = true}
local FB_punct_null =
{[string.byte("!")] = true,
[string.byte("?")] = true,
[string.byte("[")] = true,
[string.byte("(")] = true,
[0xA0] = true,
[0x202F] = true}
local FB_guil_null =
{[0xA0] = true,
[0x202F] = true}
local new_node = node.new
local copy_node = node.copy
local node_id = node.id
local HLIST = node_id("hlist")
local TEMP = node_id("temp")
local DISC = node_id("disc")
local KERN = node_id("kern")
local GLUE = node_id("glue")
local GLYPH = node_id("glyph")
local PENALTY = node_id("penalty")
local nobreak = new_node(PENALTY)
nobreak.penalty = 10000
local nbspace = new_node(GLYPH)
local insert_node_before = node.insert_before
local insert_node_after = node.insert_after
local remove_node = node.remove
function FBget_glue(toks)
local t = nil
local f = string.match(toks,
"[^%w]hskip%s*([%d%.]*)%s*[^%w]fontdimen 2")
if f == "" then f = 1 end
if tonumber(f) then
t = {tonumber(f), 0, 0}
f = string.match(toks, "plus%s*([%d%.]*)%s*[^%w]fontdimen 3")
if f == "" then f = 1 end
if tonumber(f) then
t[2] = tonumber(f)
f = string.match(toks, "minus%s*([%d%.]*)%s*[^%w]fontdimen 4")
if f == "" then f = 1 end
if tonumber(f) then
t[3] = tonumber(f)
end
end
elseif string.match(toks, "[^%w]F?B?thinspace") then
t = {0.5, 0, 0}
elseif string.match(toks, "[^%w]space") then
t = {1, 1, 1}
end
return t
end
FBsp = {}
FBsp.thin = {}
FBsp.thin.gl = {}
FBsp.thin.gl.fr = {.5, 0, 0} ; FBsp.thin.gl.ac = {}
FBsp.thin.ch = {}
FBsp.thin.ch.fr = 0x202F ; FBsp.thin.ch.ac = nil
FBsp.colon = {}
FBsp.colon.gl = {}
FBsp.colon.gl.fr = { 1, 1, 1} ; FBsp.colon.gl.ac = {}
FBsp.colon.ch = {}
FBsp.colon.ch.fr = 0xA0 ; FBsp.colon.ch.ac = nil
FBsp.guill = {}
FBsp.guill.gl = {}
FBsp.guill.gl.fr = {.8, .3, .8} ; FBsp.guill.gl.ac = {}
FBsp.guill.ch = {}
FBsp.guill.ch.fr = 0xA0 ; FBsp.guill.ch.ac = nil
local font_table = {}
local function new_glue_scaled (fid,table)
if fid > 0 and table[1] then
local fp = font_table[fid]
if not fp then
local ft = font.getfont(fid)
if ft then
font_table[fid] = ft.parameters
fp = font_table[fid]
end
end
local gl = new_node(GLUE,0)
if fp then
node.setglue(gl, table[1]*fp.space,
table[2]*fp.space_stretch,
table[3]*fp.space_shrink)
return gl
else
return nil
end
else
return nil
end
end
local FBspacing = luatexbase.attributes['FB@spacing']
local addDPspace = luatexbase.attributes['FB@addDPspace']
local addGUILspace = luatexbase.attributes['FB@addGUILspace']
local FBucsNBSP = luatexbase.attributes['FB@ucsNBSP']
local FBdialect = luatexbase.attributes['FB@dialect']
local has_attribute = node.has_attribute
-- Main function (to be added to the kerning callback).
local function french_punctuation (head)
node.kerning(head)
for item in node.traverse_id(GLYPH, head) do
local lang = item.lang
local char = item.char
if (lang == FR_fr or lang == FR_ca) and
(FB_punct_left[char] or FB_punct_right[char]) then
local fid = item.font
local attr = item.attr
local FRspacing = has_attribute(item, FBspacing)
FRspacing = FRspacing and FRspacing > 0
local FRucsNBSP = has_attribute(item, FBucsNBSP)
FRucsNBSP = FRucsNBSP and FRucsNBSP > 0
local FRdialect = has_attribute(item, FBdialect)
FRdialect = FRdialect and FRdialect > 0
local SIG = has_attribute(item, addGUILspace)
SIG = SIG and SIG >0
if FRspacing and fid > 0 then
if FB_punct_left[char] then
local prev = item.prev
local prev_id, prev_subtype, prev_char
if prev then
prev_id = prev.id
prev_subtype = prev.subtype
if prev_id == GLYPH then
prev_char = prev.char
end
end
local is_glue = prev_id == GLUE
local glue_wd
if is_glue then
glue_wd = prev.width
end
local realglue = is_glue and glue_wd > 1
if FB_punct_thin[char] or FB_punct_thick[char] then
local SBDP = has_attribute(item, addDPspace)
local auto = SBDP and SBDP > 0
if FB_punct_thick[char] and auto then
local next = item.next
local next_id
if next then
next_id = next.id
end
if next_id and
(next_id == GLYPH or next_id == DISC) then
auto = false
end
end
if auto then
if (prev_char and FB_punct_null[prev_char]) or
(is_glue and glue_wd <= 1) or
(prev_id == HLIST and prev_subtype == 3) or
(prev_id == TEMP) then
auto = false
end
end
local fbglue
local t
if FB_punct_thick[char] then
if FRdialect then
t = FBsp.colon.gl.ac
nbspace.char = FBsp.colon.ch.ac
else
t = FBsp.colon.gl.fr
nbspace.char = FBsp.colon.ch.fr
end
else
if FRdialect then
t = FBsp.thin.gl.ac
nbspace.char = FBsp.thin.ch.ac
else
t = FBsp.thin.gl.fr
nbspace.char = FBsp.thin.ch.fr
end
end
fbglue = new_glue_scaled(fid, t)
if (realglue or auto) and fbglue then
if realglue then
head = remove_node(head,prev,true)
end
if (FRucsNBSP) then
nbspace.font = fid
nbspace.attr = attr
insert_node_before(head,item,copy_node(nbspace))
else
nobreak.attr = attr
fbglue.attr = attr
insert_node_before(head,item,copy_node(nobreak))
insert_node_before(head,item,copy_node(fbglue))
end
end
elseif SIG then
local addgl = (prev_char and
not FB_guil_null[prev_char])
or
(not prev_char and
prev_id ~= TEMP and
not (prev_id == HLIST and
prev_subtype == 3)
)
if is_glue and glue_wd <= 1 then
addgl = false
end
local t = FBsp.guill.gl.fr
nbspace.char = FBsp.guill.ch.fr
if FRdialect then
t = FBsp.guill.gl.ac
nbspace.char = FBsp.guill.ch.ac
end
local fbglue = new_glue_scaled(fid, t)
if addgl and fbglue then
if is_glue then
head = remove_node(head,prev,true)
end
if (FRucsNBSP) then
nbspace.font = fid
nbspace.attr = attr
insert_node_before(head,item,copy_node(nbspace))
else
nobreak.attr = attr
fbglue.attr = attr
insert_node_before(head,item,copy_node(nobreak))
insert_node_before(head,item,copy_node(fbglue))
end
end
end
elseif SIG then
local next = item.next
local next_id, next_subtype, next_char, nextnext, kern_wd
if next then
next_id = next.id
next_subtype = next.subtype
if next_id == PENALTY then
nextnext = next.next
if nextnext and nextnext.id == GLUE then
head = remove_node(head,nextnext,true)
head = remove_node(head,next,true)
next = item.next
if next then
next_id = next.id
next_subtype = next.subtype
if next_id == GLYPH then
next_char = next.char
end
end
end
end
if next_id == KERN then
kern_wd = next.kern
if kern_wd == 0 then
nextnext = next.next
if nextnext then
next = nextnext
next_id = nextnext.id
next_subtype = nextnext.subtype
if next_id == PENALTY then
nextnext = next.next
if nextnext and nextnext.id == GLUE then
head = remove_node(head,next,true)
head = remove_node(head,nextnext,true)
next = item.next
if next then
next_id = next.id
next_subtype = next.subtype
end
end
end
end
end
end
if next_id == GLYPH then
next_char = next.char
end
end
local is_glue = next_id == GLUE
if is_glue then
glue_wd = next.width
end
local addgl = (next_char and not FB_guil_null[next_char])
or (next and not next_char)
if is_glue and glue_wd == 0 then
addgl = false
end
local fid = item.font
local t = FBsp.guill.gl.fr
nbspace.char = FBsp.guill.ch.fr
if FRdialect then
t = FBsp.guill.gl.ac
nbspace.char = FBsp.guill.ch.ac
end
local fbglue = new_glue_scaled(fid, t)
if addgl and fbglue then
if is_glue then
head = remove_node(head,next,true)
end
if (FRucsNBSP) then
nbspace.font = fid
nbspace.attr = attr
insert_node_after(head, item, copy_node(nbspace))
else
nobreak.attr = attr
fbglue.attr = attr
insert_node_after(head, item, copy_node(fbglue))
insert_node_after(head, item, copy_node(nobreak))
end
end
end
end
end
end
return head
end
return french_punctuation
-- End of File frenchb.lua.
|
