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--
-- This is file `oberdiek.luacolor.lua',
-- generated with the docstrip utility.
--
-- The original source files were:
--
-- luacolor.dtx (with options: `lua')
--
-- This is a generated file.
--
-- Project: luacolor
-- Version: 2011/11/01 v1.8
--
-- Copyright (C) 2007, 2009-2011 by
-- Heiko Oberdiek <heiko.oberdiek at googlemail.com>
--
-- This work may be distributed and/or modified under the
-- conditions of the LaTeX Project Public License, either
-- version 1.3c of this license or (at your option) any later
-- version. This version of this license is in
-- http://www.latex-project.org/lppl/lppl-1-3c.txt
-- and the latest version of this license is in
-- http://www.latex-project.org/lppl.txt
-- and version 1.3 or later is part of all distributions of
-- LaTeX version 2005/12/01 or later.
--
-- This work has the LPPL maintenance status "maintained".
--
-- This Current Maintainer of this work is Heiko Oberdiek.
--
-- This work consists of the main source file luacolor.dtx
-- and the derived files
-- luacolor.sty, luacolor.pdf, luacolor.ins, luacolor.drv,
-- luacolor-test1.tex, luacolor-test2.tex, luacolor-test3.tex,
-- oberdiek.luacolor.lua, luacolor.lua,
-- oberdiek.luacolor-pre065.lua, luacolor-pre065.lua.
--
module("oberdiek.luacolor", package.seeall)
function getversion()
tex.write("2011/11/01 v1.8")
end
local ifpdf
if tonumber(tex.pdfoutput) > 0 then
ifpdf = true
else
ifpdf = false
end
local prefix
local prefixes = {
dvips = "color ",
dvipdfm = "pdf:sc ",
truetex = "textcolor:",
pctexps = "ps::",
}
local patterns = {
["^color "] = "dvips",
["^pdf: *begincolor "] = "dvipdfm",
["^pdf: *bcolor "] = "dvipdfm",
["^pdf: *bc "] = "dvipdfm",
["^pdf: *setcolor "] = "dvipdfm",
["^pdf: *scolor "] = "dvipdfm",
["^pdf: *sc "] = "dvipdfm",
["^textcolor:"] = "truetex",
["^ps::"] = "pctexps",
}
local function info(msg, term)
local target = "log"
if term then
target = "term and log"
end
texio.write_nl(target, "Package luacolor info: " .. msg .. ".")
texio.write_nl(target, "")
end
function dvidetect()
local v = tex.box[0]
assert(v.id == node.id("hlist"))
for v in node.traverse_id(node.id("whatsit"), v.head) do
if v and v.subtype == node.subtype("special") then
local data = v.data
for pattern, driver in pairs(patterns) do
if string.find(data, pattern) then
prefix = prefixes[driver]
tex.write(driver)
return
end
end
info("\\special{" .. data .. "}", true)
return
end
end
info("Missing \\special", true)
end
local map = {
n = 0,
}
function get(color)
tex.write("" .. getvalue(color))
end
function getvalue(color)
local n = map[color]
if not n then
n = map.n + 1
map.n = n
map[n] = color
map[color] = n
end
return n
end
local attribute
function setattribute(attr)
attribute = attr
end
function getattribute()
return attribute
end
local LIST = 1
local LIST_LEADERS = 2
local COLOR = 3
local RULE = node.id("rule")
local node_types = {
[node.id("hlist")] = LIST,
[node.id("vlist")] = LIST,
[node.id("rule")] = COLOR,
[node.id("glyph")] = COLOR,
[node.id("disc")] = COLOR,
[node.id("whatsit")] = {
[node.subtype("special")] = COLOR,
[node.subtype("pdf_literal")] = COLOR,
[node.subtype("pdf_refximage")] = COLOR,
},
[node.id("glue")] =
function(n)
if n.subtype >= 100 then -- leaders
if n.leader.id == RULE then
return COLOR
else
return LIST_LEADERS
end
end
end,
}
local function get_type(n)
local ret = node_types[n.id]
if type(ret) == 'table' then
ret = ret[n.subtype]
end
if type(ret) == 'function' then
ret = ret(n)
end
return ret
end
local mode = 2 -- luatex.pdfliteral.direct
local WHATSIT = node.id("whatsit")
local SPECIAL = 3
local PDFLITERAL = 8
local DRY_FALSE = false
local DRY_TRUE = true
local function traverse(list, color, dry)
if not list then
return color
end
if get_type(list) ~= LIST then
texio.write_nl("!!! Error: Wrong list type: " .. node.type(list.id))
return color
end
local head = list.head
for n in node.traverse(head) do
local t = get_type(n)
if t == LIST then
color = traverse(n, color, dry)
elseif t == LIST_LEADERS then
local color_after = traverse(n.leader, color, DRY_TRUE)
if color == color_after then
traverse(n.leader, color, DRY_FALSE or dry)
else
traverse(n.leader, '', DRY_FALSE or dry)
color = ''
end
elseif t == COLOR then
local v = node.has_attribute(n, attribute)
if v then
local newColor = map[v]
if newColor ~= color then
color = newColor
if dry == DRY_FALSE then
local newNode
if ifpdf then
newNode = node.new(WHATSIT, PDFLITERAL)
newNode.mode = mode
newNode.data = color
else
newNode = node.new(WHATSIT, SPECIAL)
newNode.data = prefix .. color
end
head = node.insert_before(head, n, newNode)
end
end
end
end
end
list.head = head
return color
end
function process(box)
local color = ""
local list = tex.getbox(box)
traverse(list, color, DRY_FALSE)
end
--
-- End of File `oberdiek.luacolor.lua'.
|
