/usr/share/texlive/texmf-dist/tex/luatex/chickenize/chickenize.lua is in texlive-luatex 2012.20120611-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- This is file `chickenize.lua',
-- generated with the docstrip utility.
--
-- The original source files were:
--
-- chickenize.dtx (with options: `lua')
--
-- EXPERIMENTAL CODE
--
-- This package is copyright © 20012 Arno L. Trautmann. It 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 work has the LPPL mainten-
-- ance status ‘author-maintained’.
local nodenew = node.new
local nodecopy = node.copy
local nodeinsertbefore = node.insert_before
local nodeinsertafter = node.insert_after
local noderemove = node.remove
local nodeid = node.id
local nodetraverseid = node.traverse_id
Hhead = nodeid("hhead")
RULE = nodeid("rule")
GLUE = nodeid("glue")
WHAT = nodeid("whatsit")
COL = node.subtype("pdf_colorstack")
GLYPH = nodeid("glyph")
color_push = nodenew(WHAT,COL)
color_pop = nodenew(WHAT,COL)
color_push.stack = 0
color_pop.stack = 0
color_push.cmd = 1
color_pop.cmd = 2
chicken_pagenumbers = true
chickenstring = {}
chickenstring[1] = "Chicken" -- chickenstring is a table, please remeber this!
chickenizefraction = 0.5
-- set this to a small value to fool somebody, or to see if your text has been read carefully. This is also a great way to lay easter eggs for your own class / package …
chicken_substitutions = 0 -- value to count the substituted chickens. Makes sense for testing your proofreaders.
local tbl = font.getfont(font.current())
local space = tbl.parameters.space
local shrink = tbl.parameters.space_shrink
local stretch = tbl.parameters.space_stretch
local match = unicode.utf8.match
chickenize_ignore_word = false
chickenize_real_stuff = function(i,head)
while ((i.next.id == 37) or (i.next.id == 11) or (i.next.id == 7) or (i.next.id == 0)) do --find end of a word
i.next = i.next.next
end
chicken = {} -- constructing the node list.
-- Should this be done only once? No, otherwise we lose the freedom to change the string in-document.
-- But it could be done only once each paragraph as in-paragraph changes are not possible!
chickenstring_tmp = chickenstring[math.random(1,#chickenstring)]
chicken[0] = nodenew(37,1) -- only a dummy for the loop
for i = 1,string.len(chickenstring_tmp) do
chicken[i] = nodenew(37,1)
chicken[i].font = font.current()
chicken[i-1].next = chicken[i]
end
j = 1
for s in string.utfvalues(chickenstring_tmp) do
local char = unicode.utf8.char(s)
chicken[j].char = s
if match(char,"%s") then
chicken[j] = nodenew(10)
chicken[j].spec = nodenew(47)
chicken[j].spec.width = space
chicken[j].spec.shrink = shrink
chicken[j].spec.stretch = stretch
end
j = j+1
end
node.slide(chicken[1])
lang.hyphenate(chicken[1])
chicken[1] = node.kerning(chicken[1]) -- FIXME: does not work
chicken[1] = node.ligaturing(chicken[1]) -- dito
nodeinsertbefore(head,i,chicken[1])
chicken[1].next = chicken[2] -- seems to be necessary … to be fixed
chicken[string.len(chickenstring_tmp)].next = i.next
return head
end
chickenize = function(head)
for i in nodetraverseid(37,head) do --find start of a word
if (chickenize_ignore_word == false) then -- normal case: at the beginning of a word, we jump into chickenization
head = chickenize_real_stuff(i,head)
end
-- At the end of the word, the ignoring is reset. New chance for everyone.
if not((i.next.id == 37) or (i.next.id == 7) or (i.next.id == 22) or (i.next.id == 11)) then
chickenize_ignore_word = false
end
-- And the random determination of the chickenization of the next word:
if math.random() > chickenizefraction then
chickenize_ignore_word = true
elseif chickencount then
chicken_substitutions = chicken_substitutions + 1
end
end
return head
end
local separator = string.rep("=", 28)
local texiowrite_nl = texio.write_nl
nicetext = function()
texiowrite_nl("Output written on "..tex.jobname..".pdf ("..status.total_pages.." chicken,".." eggs).")
texiowrite_nl(" ")
texiowrite_nl(separator)
texiowrite_nl("Hello my dear user,")
texiowrite_nl("good job, now go outside and enjoy the world!")
texiowrite_nl(" ")
texiowrite_nl("And don't forget to feed your chicken!")
texiowrite_nl(separator .. "\n")
if chickencount then
texiowrite_nl("There were "..chicken_substitutions.." substitutions made.")
texiowrite_nl(separator)
end
end
local quotestrings = {
[171] = true, [172] = true,
[8216] = true, [8217] = true, [8218] = true,
[8219] = true, [8220] = true, [8221] = true,
[8222] = true, [8223] = true,
[8248] = true, [8249] = true, [8250] = true,
}
guttenbergenize_rq = function(head)
for n in nodetraverseid(nodeid"glyph",head) do
local i = n.char
if quotestrings[i] then
noderemove(head,n)
end
end
return head
end
hammertimedelay = 1.2
local htime_separator = string.rep("=", 30) .. "\n" -- slightly inconsistent with the “nicetext”
hammertime = function(head)
if hammerfirst then
texiowrite_nl(htime_separator)
texiowrite_nl("============STOP!=============\n")
texiowrite_nl(htime_separator .. "\n\n\n")
os.sleep (hammertimedelay*1.5)
texiowrite_nl(htime_separator .. "\n")
texiowrite_nl("==========HAMMERTIME==========\n")
texiowrite_nl(htime_separator .. "\n\n")
os.sleep (hammertimedelay)
hammerfirst = false
else
os.sleep (hammertimedelay)
texiowrite_nl(htime_separator)
texiowrite_nl("======U can't touch this!=====\n")
texiowrite_nl(htime_separator .. "\n\n")
os.sleep (hammertimedelay*0.5)
end
return head
end
itsame = function()
local mr = function(a,b) rectangle({a*10,b*-10},10,10) end
color = "1 .6 0"
for i = 6,9 do mr(i,3) end
for i = 3,11 do mr(i,4) end
for i = 3,12 do mr(i,5) end
for i = 4,8 do mr(i,6) end
for i = 4,10 do mr(i,7) end
for i = 1,12 do mr(i,11) end
for i = 1,12 do mr(i,12) end
for i = 1,12 do mr(i,13) end
color = ".3 .5 .2"
for i = 3,5 do mr(i,3) end mr(8,3)
mr(2,4) mr(4,4) mr(8,4)
mr(2,5) mr(4,5) mr(5,5) mr(9,5)
mr(2,6) mr(3,6) for i = 8,11 do mr(i,6) end
for i = 3,8 do mr(i,8) end
for i = 2,11 do mr(i,9) end
for i = 1,12 do mr(i,10) end
mr(3,11) mr(10,11)
for i = 2,4 do mr(i,15) end for i = 9,11 do mr(i,15) end
for i = 1,4 do mr(i,16) end for i = 9,12 do mr(i,16) end
color = "1 0 0"
for i = 4,9 do mr(i,1) end
for i = 3,12 do mr(i,2) end
for i = 8,10 do mr(5,i) end
for i = 5,8 do mr(i,10) end
mr(8,9) mr(4,11) mr(6,11) mr(7,11) mr(9,11)
for i = 4,9 do mr(i,12) end
for i = 3,10 do mr(i,13) end
for i = 3,5 do mr(i,14) end
for i = 7,10 do mr(i,14) end
end
chickenkernamount = 0
chickeninvertkerning = false
function kernmanipulate (head)
if chickeninvertkerning then -- invert the kerning
for n in nodetraverseid(11,head) do
n.kern = -n.kern
end
else -- if not, set it to the given value
for n in nodetraverseid(11,head) do
n.kern = chickenkernamount
end
end
return head
end
leetspeak_onlytext = false
leettable = {
[101] = 51, -- E
[105] = 49, -- I
[108] = 49, -- L
[111] = 48, -- O
[115] = 53, -- S
[116] = 55, -- T
[101-32] = 51, -- e
[105-32] = 49, -- i
[108-32] = 49, -- l
[111-32] = 48, -- o
[115-32] = 53, -- s
[116-32] = 55, -- t
}
leet = function(head)
for line in nodetraverseid(Hhead,head) do
for i in nodetraverseid(GLYPH,line.head) do
if not leetspeak_onlytext or
node.has_attribute(i,luatexbase.attributes.leetattr)
then
if leettable[i.char] then
i.char = leettable[i.char]
end
end
end
end
return head
end
local letterspace_glue = nodenew(nodeid"glue")
local letterspace_spec = nodenew(nodeid"glue_spec")
local letterspace_pen = nodenew(nodeid"penalty")
letterspace_spec.width = tex.sp"0pt"
letterspace_spec.stretch = tex.sp"2pt"
letterspace_glue.spec = letterspace_spec
letterspace_pen.penalty = 10000
letterspaceadjust = function(head)
for glyph in nodetraverseid(nodeid"glyph", head) do
if glyph.prev and (glyph.prev.id == nodeid"glyph" or glyph.prev.id == nodeid"disc") then
local g = nodecopy(letterspace_glue)
nodeinsertbefore(head, glyph, g)
nodeinsertbefore(head, g, nodecopy(letterspace_pen))
end
end
return head
end
matrixize = function(head)
x = {}
s = nodenew(nodeid"disc")
for n in nodetraverseid(nodeid"glyph",head) do
j = n.char
for m = 0,7 do -- stay ASCII for now
x[7-m] = nodecopy(n) -- to get the same font etc.
if (j / (2^(7-m)) < 1) then
x[7-m].char = 48
else
x[7-m].char = 49
j = j-(2^(7-m))
end
nodeinsertbefore(head,n,x[7-m])
nodeinsertafter(head,x[7-m],nodecopy(s))
end
noderemove(head,n)
end
return head
end
local separator = string.rep("=", 28)
local texiowrite_nl = texio.write_nl
pancaketext = function()
texiowrite_nl("Output written on "..tex.jobname..".pdf ("..status.total_pages.." chicken,".." eggs).")
texiowrite_nl(" ")
texiowrite_nl(separator)
texiowrite_nl("Soo ... you decided to use \\pancakenize.")
texiowrite_nl("That means you owe me a pancake!")
texiowrite_nl(" ")
texiowrite_nl("(This goes by document, not compilation.)")
texiowrite_nl(separator.."\n\n")
texiowrite_nl("Looking forward for my pancake! :)")
end
local randomfontslower = 1
local randomfontsupper = 0
randomfonts = function(head)
local rfub
if randomfontsupper > 0 then -- fixme: this should be done only once, no? Or at every paragraph?
rfub = randomfontsupper -- user-specified value
else
rfub = font.max() -- or just take all fonts
end
for line in nodetraverseid(Hhead,head) do
for i in nodetraverseid(GLYPH,line.head) do
if not(randomfonts_onlytext) or node.has_attribute(i,luatexbase.attributes.randfontsattr) then
i.font = math.random(randomfontslower,rfub)
end
end
end
return head
end
uclcratio = 0.5 -- ratio between uppercase and lower case
randomuclc = function(head)
for i in nodetraverseid(37,head) do
if not(randomuclc_onlytext) or node.has_attribute(i,luatexbase.attributes.randuclcattr) then
if math.random() < uclcratio then
i.char = tex.uccode[i.char]
else
i.char = tex.lccode[i.char]
end
end
end
return head
end
randomchars = function(head)
for line in nodetraverseid(Hhead,head) do
for i in nodetraverseid(GLYPH,line.head) do
i.char = math.floor(math.random()*512)
end
end
return head
end
randomcolor_grey = false
randomcolor_onlytext = false --switch between local and global colorization
rainbowcolor = false
grey_lower = 0
grey_upper = 900
Rgb_lower = 1
rGb_lower = 1
rgB_lower = 1
Rgb_upper = 254
rGb_upper = 254
rgB_upper = 254
rainbow_step = 0.005
rainbow_Rgb = 1-rainbow_step -- we start in the red phase
rainbow_rGb = rainbow_step -- values x must always be 0 < x < 1
rainbow_rgB = rainbow_step
rainind = 1 -- 1:red,2:yellow,3:green,4:blue,5:purple
randomcolorstring = function()
if randomcolor_grey then
return (0.001*math.random(grey_lower,grey_upper)).." g"
elseif rainbowcolor then
if rainind == 1 then -- red
rainbow_rGb = rainbow_rGb + rainbow_step
if rainbow_rGb >= 1-rainbow_step then rainind = 2 end
elseif rainind == 2 then -- yellow
rainbow_Rgb = rainbow_Rgb - rainbow_step
if rainbow_Rgb <= rainbow_step then rainind = 3 end
elseif rainind == 3 then -- green
rainbow_rgB = rainbow_rgB + rainbow_step
rainbow_rGb = rainbow_rGb - rainbow_step
if rainbow_rGb <= rainbow_step then rainind = 4 end
elseif rainind == 4 then -- blue
rainbow_Rgb = rainbow_Rgb + rainbow_step
if rainbow_Rgb >= 1-rainbow_step then rainind = 5 end
else -- purple
rainbow_rgB = rainbow_rgB - rainbow_step
if rainbow_rgB <= rainbow_step then rainind = 1 end
end
return rainbow_Rgb.." "..rainbow_rGb.." "..rainbow_rgB.." rg"
else
Rgb = math.random(Rgb_lower,Rgb_upper)/255
rGb = math.random(rGb_lower,rGb_upper)/255
rgB = math.random(rgB_lower,rgB_upper)/255
return Rgb.." "..rGb.." "..rgB.." ".." rg"
end
end
randomcolor = function(head)
for line in nodetraverseid(0,head) do
for i in nodetraverseid(37,line.head) do
if not(randomcolor_onlytext) or
(node.has_attribute(i,luatexbase.attributes.randcolorattr))
then
color_push.data = randomcolorstring() -- color or grey string
line.head = nodeinsertbefore(line.head,i,nodecopy(color_push))
nodeinsertafter(line.head,i,nodecopy(color_pop))
end
end
end
return head
end
tabularasa_onlytext = false
tabularasa = function(head)
local s = nodenew(nodeid"kern")
for line in nodetraverseid(nodeid"hlist",head) do
for n in nodetraverseid(nodeid"glyph",line.head) do
if not(tabularasa_onlytext) or node.has_attribute(n,luatexbase.attributes.tabularasaattr) then
s.kern = n.width
nodeinsertafter(line.list,n,nodecopy(s))
line.head = noderemove(line.list,n)
end
end
end
return head
end
uppercasecolor_onlytext = false
uppercasecolor = function (head)
for line in nodetraverseid(Hhead,head) do
for upper in nodetraverseid(GLYPH,line.head) do
if not(uppercasecolor_onlytext) or node.has_attribute(upper,luatexbase.attributes.uppercasecolorattr) then
if (((upper.char > 64) and (upper.char < 91)) or
((upper.char > 57424) and (upper.char < 57451))) then -- for small caps! nice ☺
color_push.data = randomcolorstring() -- color or grey string
line.head = nodeinsertbefore(line.head,upper,nodecopy(color_push))
nodeinsertafter(line.head,upper,nodecopy(color_pop))
end
end
end
end
return head
end
keeptext = true
colorexpansion = true
colorstretch_coloroffset = 0.5
colorstretch_colorrange = 0.5
chickenize_rule_bad_height = 4/5 -- height and depth of the rules
chickenize_rule_bad_depth = 1/5
colorstretchnumbers = true
drawstretchthreshold = 0.1
drawexpansionthreshold = 0.9
colorstretch = function (head)
local f = font.getfont(font.current()).characters
for line in nodetraverseid(Hhead,head) do
local rule_bad = nodenew(RULE)
if colorexpansion then -- if also the font expansion should be shown
local g = line.head
while not(g.id == 37) do
g = g.next
end
exp_factor = g.width / f[g.char].width
exp_color = colorstretch_coloroffset + (1-exp_factor)*10 .. " g"
rule_bad.width = 0.5*line.width -- we need two rules on each line!
else
rule_bad.width = line.width -- only the space expansion should be shown, only one rule
end
rule_bad.height = tex.baselineskip.width*chickenize_rule_bad_height -- this should give a better output
rule_bad.depth = tex.baselineskip.width*chickenize_rule_bad_depth
local glue_ratio = 0
if line.glue_order == 0 then
if line.glue_sign == 1 then
glue_ratio = colorstretch_colorrange * math.min(line.glue_set,1)
else
glue_ratio = -colorstretch_colorrange * math.min(line.glue_set,1)
end
end
color_push.data = colorstretch_coloroffset + glue_ratio .. " g"
-- set up output
local p = line.head
-- a rule to immitate kerning all the way back
local kern_back = nodenew(RULE)
kern_back.width = -line.width
-- if the text should still be displayed, the color and box nodes are inserted additionally
-- and the head is set to the color node
if keeptext then
line.head = nodeinsertbefore(line.head,line.head,nodecopy(color_push))
else
node.flush_list(p)
line.head = nodecopy(color_push)
end
nodeinsertafter(line.head,line.head,rule_bad) -- then the rule
nodeinsertafter(line.head,line.head.next,nodecopy(color_pop)) -- and then pop!
tmpnode = nodeinsertafter(line.head,line.head.next.next,kern_back)
-- then a rule with the expansion color
if colorexpansion then -- if also the stretch/shrink of letters should be shown
color_push.data = exp_color
nodeinsertafter(line.head,tmpnode,nodecopy(color_push))
nodeinsertafter(line.head,tmpnode.next,nodecopy(rule_bad))
nodeinsertafter(line.head,tmpnode.next.next,nodecopy(color_pop))
end
if colorstretchnumbers then
j = 1
glue_ratio_output = {}
for s in string.utfvalues(math.abs(glue_ratio)) do -- using math.abs here gets us rid of the minus sign
local char = unicode.utf8.char(s)
glue_ratio_output[j] = nodenew(37,1)
glue_ratio_output[j].font = font.current()
glue_ratio_output[j].char = s
j = j+1
end
if math.abs(glue_ratio) > drawstretchthreshold then
if glue_ratio < 0 then color_push.data = "0.99 0 0 rg"
else color_push.data = "0 0.99 0 rg" end
else color_push.data = "0 0 0 rg"
end
nodeinsertafter(line.head,node.tail(line.head),nodecopy(color_push))
for i = 1,math.min(j-1,7) do
nodeinsertafter(line.head,node.tail(line.head),glue_ratio_output[i])
end
nodeinsertafter(line.head,node.tail(line.head),nodecopy(color_pop))
end -- end of stretch number insertion
end
return head
end
function scorpionize_color(head)
color_push.data = ".35 .55 .75 rg"
nodeinsertafter(head,head,nodecopy(color_push))
nodeinsertafter(head,node.tail(head),nodecopy(color_pop))
return head
end
zebracolorarray = {}
zebracolorarray_bg = {}
zebracolorarray[1] = "0.1 g"
zebracolorarray[2] = "0.9 g"
zebracolorarray_bg[1] = "0.9 g"
zebracolorarray_bg[2] = "0.1 g"
function zebranize(head)
zebracolor = 1
for line in nodetraverseid(nodeid"hhead",head) do
if zebracolor == #zebracolorarray then zebracolor = 0 end
zebracolor = zebracolor + 1
color_push.data = zebracolorarray[zebracolor]
line.head = nodeinsertbefore(line.head,line.head,nodecopy(color_push))
for n in nodetraverseid(nodeid"glyph",line.head) do
if n.next then else
nodeinsertafter(line.head,n,nodecopy(color_pull))
end
end
local rule_zebra = nodenew(RULE)
rule_zebra.width = line.width
rule_zebra.height = tex.baselineskip.width*4/5
rule_zebra.depth = tex.baselineskip.width*1/5
local kern_back = nodenew(RULE)
kern_back.width = -line.width
color_push.data = zebracolorarray_bg[zebracolor]
line.head = nodeinsertbefore(line.head,line.head,nodecopy(color_pop))
line.head = nodeinsertbefore(line.head,line.head,nodecopy(color_push))
nodeinsertafter(line.head,line.head,kern_back)
nodeinsertafter(line.head,line.head,rule_zebra)
end
return (head)
end
--
function pdf_print (...)
for _, str in ipairs({...}) do
pdf.print(str .. " ")
end
pdf.print("\string\n")
end
function move (p)
pdf_print(p[1],p[2],"m")
end
function line (p)
pdf_print(p[1],p[2],"l")
end
function curve(p1,p2,p3)
pdf_print(p1[1], p1[2],
p2[1], p2[2],
p3[1], p3[2], "c")
end
function close ()
pdf_print("h")
end
function linewidth (w)
pdf_print(w,"w")
end
function stroke ()
pdf_print("S")
end
--
function strictcircle(center,radius)
local left = {center[1] - radius, center[2]}
local lefttop = {left[1], left[2] + 1.45*radius}
local leftbot = {left[1], left[2] - 1.45*radius}
local right = {center[1] + radius, center[2]}
local righttop = {right[1], right[2] + 1.45*radius}
local rightbot = {right[1], right[2] - 1.45*radius}
move (left)
curve (lefttop, righttop, right)
curve (rightbot, leftbot, left)
stroke()
end
function disturb_point(point)
return {point[1] + math.random()*5 - 2.5,
point[2] + math.random()*5 - 2.5}
end
function sloppycircle(center,radius)
local left = disturb_point({center[1] - radius, center[2]})
local lefttop = disturb_point({left[1], left[2] + 1.45*radius})
local leftbot = {lefttop[1], lefttop[2] - 2.9*radius}
local right = disturb_point({center[1] + radius, center[2]})
local righttop = disturb_point({right[1], right[2] + 1.45*radius})
local rightbot = disturb_point({right[1], right[2] - 1.45*radius})
local right_end = disturb_point(right)
move (right)
curve (rightbot, leftbot, left)
curve (lefttop, righttop, right_end)
linewidth(math.random()+0.5)
stroke()
end
function sloppyline(start,stop)
local start_line = disturb_point(start)
local stop_line = disturb_point(stop)
start = disturb_point(start)
stop = disturb_point(stop)
move(start) curve(start_line,stop_line,stop)
linewidth(math.random()+0.5)
stroke()
end
--
-- End of File `chickenize.lua'.
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