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do
local function looks_like_token(t)
return type(t)=="userdata" or (type(t)=="table" and t.cmdname~=nil and t.tok~=nil)
end
-- public API :: once the package is loaded, this holds the .tok value of the frozen relax token
prettyprint_frozenrelaxtok=nil
local function prettyprint_one_arg(tokenlist)
if looks_like_token(tokenlist) then
return prettyprint_one_arg({tokenlist})
end
local s=""
local function printstring(t)
-- this is just for debugging/convenience purpose. If the item is a string instead of a token...
t=tostring(t)
for _, c in utf8.codes(t) do
if c==32 then
s=s.."token("..c..',"A"),'
else
s=s.."token("..c..',"C"),'
end
end
end
if type(tokenlist)~="table" then
-- user give a string (or something similar). Print it as detokenized characters
printstring(tokenlist)
else
-- normal print of tokenlist
for i=1, #tokenlist do
local t=tokenlist[i]
if not looks_like_token(t) then
printstring(t)
elseif t.csname==nil then
s=s.."token("..t.mode..',"'..(({left_brace=1, right_brace=2, math_shift=3, tab_mark=4, mac_param=6, sup_mark=7, sub_mark=8, spacer="A", letter="B", other_char="C"})[t.cmdname])..'"),'
else
if t.active then
s=s.."token("..utf8.codepoint(t.csname)..',"D"),'
elseif t.tok==prettyprint_frozenrelaxtok then
s=s.."csfrozenrelax(),"
else
s=s.."cs("
-- TODO
for _, c in utf8.codes(t.csname) do
s=s..c..","
end
s=s.."),"
end
end
end
end
return s
end
local function get_output_format()
return token.get_macro "_prettytok_mode"
end
local function get_file_number()
return token.get_mode(token.create("_prettytok_file"))
end
function prettyprint(...)
local output_format=get_output_format()
local args={...}
if output_format=="html" then
local prettyfilenumber=get_file_number()
local s="print_tl("
for i=1, select("#", ...) do
s=s..prettyprint_one_arg(args[i])
end
texio.write(prettyfilenumber, s..")//</script><script>\n")
else
assert(output_format=="term-8bit" or output_format=="term-shell")
texio.write_nl("")
local content=""
local content_len=0 -- only count visible content
local function typeout_content()
print(content)
content=""
content_len=0
end
local function append_content(s) -- only call this on content that takes visible width. For example don't use this to set color
assert(type(s)=="string")
content=content..s
content_len=content_len+utf8.len(s)
end
append_content(token.get_macro "prettytermprefix")
local wraplimit=tonumber(token.get_macro "prettytermwraplimit")
---- color
--[[
local gray ='\x1b[90m'
local red ='\x1b[31m'
local green ='\x1b[38;5;121m'
local yellow='\x1b[93m'
local white ='\x1b[0m'
]]
local gray =token.get_macro "_prettytok_gray"
local red =token.get_macro "_prettytok_red"
local green =token.get_macro "_prettytok_green"
local yellow=token.get_macro "_prettytok_yellow"
local white =token.get_macro "_prettytok_white"
local current_color=white
local function setcolor(c)
if current_color~=c then
current_color=c
content=content..c
end
end
local prettytermprefixmore=token.get_macro "prettytermprefixmore"
local function check_wrap()
if content_len>wraplimit then
if current_color~=white then
content=content..white
end
print(content)
content=""
content_len=0
append_content(prettytermprefixmore)
if current_color~=white then
content=content..current_color
end
end
end
local function prettyprint_term_one_arg(tokenlist)
if looks_like_token(tokenlist) then
return prettyprint_term_one_arg({tokenlist})
end
local function print_term_char(code)
if code<27 then
if code==9 then
append_content("⇥")
else
append_content("^^"..string.char(code+64))
if code==13 or code==10 then
typeout_content()
append_content(prettytermprefixmore) -- color the prefix with the same color
end
end
elseif code==32 then
append_content("␣")
else
append_content(utf8.char(code)) -- unlike TeX implementation currently this does not show ^^⟨hex digits⟩ representation
end
end
local function printstring(t)
-- this is just for debugging/convenience purpose. If the item is a string instead of a token...
t=tostring(t)
for _, c in utf8.codes(t) do
if c==32 then
setcolor(gray)
append_content("␣")
else
setcolor(white)
append_content(utf8.char(c))
end
end
end
if type(tokenlist)~="table" then
-- user give a string (or something similar). Print it as detokenized characters
printstring(tokenlist)
check_wrap()
else
-- normal print of tokenlist
for i=1, #tokenlist do
local t=tokenlist[i]
if not looks_like_token(t) then
printstring(t)
check_wrap()
elseif t.csname==nil then
setcolor(({left_brace=red, right_brace=red, math_shift=red, tab_mark=red, mac_param=red, sup_mark=red, sub_mark=red, spacer=gray, letter=green, other_char=white})[t.cmdname])
print_term_char(t.mode)
check_wrap()
else
if t.active then
setcolor(yellow)
print_term_char(utf8.codepoint(t.csname))
elseif t.tok==prettyprint_frozenrelaxtok then
setcolor(red)
append_content("\\relax ")
else
setcolor(yellow)
append_content("\\")
for _, c in utf8.codes(t.csname) do
print_term_char(c)
end
append_content(" ")
end
check_wrap()
end
end
end
end
for i=1, select("#", ...) do
prettyprint_term_one_arg(args[i])
end
setcolor(white)
typeout_content()
end
end
function prettyprintw()
local callback=token.scan_toks()
local extra=token.scan_toks()
local s={}
local last_token
while true do
last_token=token.get_next()
if last_token.csname=="prettystop" then break end
s[#s+1]=last_token
callback[#callback+1]=last_token
end
prettyprint(extra, s) -- exclude the \prettystop token
callback[#callback+1]=last_token
token.put_next(callback)
end
end
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