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PandocAnsiFilter
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Div selector added

This commit is contained in:
Meik Hellmund 2022-09-26 18:43:24 +02:00
parent 9242d38ecf
commit 624984fc2a
1 changed files with 102 additions and 31 deletions
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133
ansi2html.lua
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@ -1,5 +1,3 @@
-- this is essentially
-- https://github.com/jupyter/nbconvert/blob/main/nbconvert/filters/ansi.py
-- converted to lua
@ -54,7 +52,8 @@ pre .ansi-underline { text-decoration: underline; }
local latexpreamble = [[
\usepackage{fancyvrb}
\usepackage{fontspec}
\usepackage{fontspec}
\usepackage{xcolor}
\renewenvironment{verbatim}{%
\VerbatimEnvironment
\begin{Verbatim}[commandchars=\\\{\}]%
@ -68,6 +67,24 @@ local latexpreamble = [[
ItalicFont = *-RegularItalic,
BoldItalicFont = *-BoldItalic,
]
\definecolor{ansi-black}{HTML}{3E424D}
\definecolor{ansi-black-intense}{HTML}{282C36}
\definecolor{ansi-red}{HTML}{E75C58}
\definecolor{ansi-red-intense}{HTML}{B22B31}
\definecolor{ansi-green}{HTML}{00A250}
\definecolor{ansi-green-intense}{HTML}{007427}
\definecolor{ansi-yellow}{HTML}{DDB62B}
\definecolor{ansi-yellow-intense}{HTML}{B27D12}
\definecolor{ansi-blue}{HTML}{208FFB}
\definecolor{ansi-blue-intense}{HTML}{0065CA}
\definecolor{ansi-magenta}{HTML}{D160C4}
\definecolor{ansi-magenta-intense}{HTML}{A03196}
\definecolor{ansi-cyan}{HTML}{60C6C8}
\definecolor{ansi-cyan-intense}{HTML}{258F8F}
\definecolor{ansi-white}{HTML}{C5C1B4}
\definecolor{ansi-white-intense}{HTML}{A1A6B2}
\definecolor{ansi-default-inverse-fg}{HTML}{FFFFFF}
\definecolor{ansi-default-inverse-bg}{HTML}{000000}
]]
local ANSI_COLORS = {
@ -99,7 +116,7 @@ local function get_extended_color(numbers)
r = table.remove(numbers, 1)
g = table.remove(numbers, 1)
b = table.remove(numbers, 1)
elseif n == 5 and #numbers >= 1 then
elseif n == 5 and #numbers >= 1 then
-- 256 colors
idx = table.remove(numbers, 1)
if idx < 16 then
@ -108,13 +125,13 @@ local function get_extended_color(numbers)
elseif idx < 232 then
-- 6x6x6 color cube, see http://stackoverflow.com/a/27165165/500098
r = (idx - 16) // 36
r = 55 + r * 40
r = 55 + r * 40
if r < 0 then r = 0 end
g = ((idx - 16) % 36) // 6
g = 55 + g * 40
g = 55 + g * 40
if g < 0 then g = 0 end
b = (idx - 16) % 6
b = 55 + b * 40
b = 55 + b * 40
if b < 0 then b = 0 end
elseif idx < 256 then
-- grayscale, see http://stackoverflow.com/a/27165165/500098
@ -147,19 +164,46 @@ local function LaTeXconverter(fg, bg, bold, underline, inverse)
if inverse then
fg, bg = bg, fg
end
if type(fg) == "number" then
starttag = starttag .. "\\textcolor{" .. ANSI_COLORS[fg+1] .. "}{"
starttag = starttag .. [[\textcolor{]] .. ANSI_COLORS[fg+1] .. "}{"
endtag = "}" .. endtag
elseif type(fg) == "table" then
-- See http://tex.stackexchange.com/a/291102/13684
starttag = starttag .. "\\def\\tcRGB{\\textcolor[RGB]}\\expandafter"
starttag = starttag .. "\\tcRGB\\expandafter{\\detokenize{%s,%s,%s}}{" % fg
starttag = starttag .. [[\def\tcRGB{\textcolor[RGB]}\expandafter]]
starttag = starttag .. string.format([[\tcRGB\expandafter{\detokenize{%d,%d,%d}}{]], fg[1], fg[2], fg[3])
endtag = "}" .. endtag
elseif inverse then
starttag = starttag .. "\\textcolor{ansi-default-inverse-fg}{"
starttag = starttag .. [[\textcolor{ansi-default-inverse-fg}{]]
endtag = "}" .. endtag
end
if type(bg) == "number" then
starttag = starttag .. [[\setlength{\fboxsep}{0pt}]]
starttag = starttag .. [[\colorbox{]] .. ANSI_COLORS[bg+1] .. "}{"
endtag = [[\strut}]] .. endtag
elseif type(bg) == "table" then
-- See http://tex.stackexchange.com/a/291102/13684
starttag = starttag .. [[\setlength{\fboxsep}{0pt}]]
starttag = starttag .. [[\def\cbRGB{\colorbox[RGB]}\expandafter]]
starttag = starttag .. string.format([[\cbRGB\expandafter{\detokenize{%d,%d,%d}}{]], bg[1], bg[2], bg[3])
endtag = [[\strut}]] .. endtag
elseif inverse then
starttag = starttag .. [[\setlength{\fboxsep}{0pt}]]
starttag = starttag .. [[\colorbox{ansi-default-inverse-bg}{]]
endtag = [[\strut}]] .. endtag
end
if bold then
starttag = starttag .. [[\textbf{]]
endtag = "}" .. endtag
end
if underline then
starttag = starttag .. [[\underline{]]
endtag = "}" .. endtag
end
return starttag, endtag
end
local function HTMLconverter(fg, bg, bold, underline, inverse)
@ -185,7 +229,7 @@ local function HTMLconverter(fg, bg, bold, underline, inverse)
if type(bg) == "number" then
table.insert(classes, ANSI_COLORS[bg+1] .. "-bg")
elseif type(bg) == "table" then
table.insert(styles, string.format("background-color: rgb(%d,%d,%d)",
table.insert(styles, string.format("background-color: rgb(%d,%d,%d)",
bg[1], bg[2], bg[3]))
elseif inverse then
table.insert(classes, "ansi-default-inverse-bg")
@ -199,16 +243,16 @@ local function HTMLconverter(fg, bg, bold, underline, inverse)
table.insert(classes, "ansi-underline")
end
local starttag = "<span"
local starttag = "<span"
if next(classes) ~= nil then
starttag = starttag .. ' class="' .. table.concat(classes, " ") .. '"'
starttag = starttag .. ' class="' .. table.concat(classes, " ") .. '"'
end
if next(styles) ~= nil then
starttag = starttag .. ' style="' .. table.concat(styles, " ") .. '"'
starttag = starttag .. ' style="' .. table.concat(styles, " ") .. '"'
end
return starttag..">","</span>"
return starttag..">","</span>"
end
@ -249,7 +293,7 @@ local function codeBlockTrans(e)
table.insert(numbers, tonumber(i))
end
else
io.stderr:write("Unsupported ANSI sequence ESC["..c1..d1.." ignored\n" )
io.stderr:write("Unsupported ANSI sequence ESC["..c1..d1.." ignored\n" )
end
chunk, text = text:sub(1, s1-1), text:sub(e1+1)
else
@ -304,34 +348,60 @@ local function codeBlockTrans(e)
elseif n >= 100 and n <= 107 then
bg = n + 8 - 100
else
io.stderr:write(string.format("ESC sequence with unknown code %d before:\n",n))
io.stderr:write(string.format("ESC sequence with unknown code %d before:\n",n))
io.stderr:write(chunk.."\n")
end
end
end
-- e.text = out
return pandoc.RawBlock(fmt, '<pre class="ansi"><code class="ansi">'..out..'</code></pre>')
if fmt == 'html' then
return pandoc.RawBlock(fmt, '<pre class="ansi"><code class="ansi">'..out..'</code></pre>')
end
if fmt == 'latex' then
return pandoc.RawBlock(fmt, "\\begin{verbatim}\n"..out.."\n\\end{verbatim}")
end
end
end
-- traverse='topdown'
-- algo from https://github.com/jgm/pandoc/commit/77faccb505992c944cd1b92f50e4e00d2927682b
local function divx(e)
-- consider only formats html and latex
local function divTrans(e)
local fmt
if FORMAT:match 'latex' then
fmt = 'latex'
elseif FORMAT:match 'html' then
fmt = 'html'
elseif FORMAT:match 'native' then
fmt = 'html'
else
return
end
local function cmp(a,b)
return a["rank"] < b["rank"]
end
if e.classes[1] == "output" then
print("output div entered")
io.stderr:write("\noutput div entered\n")
local c = e.content -- enhanced pandoc.List table
local ranks = {}
local best = 0
for i, el in pairs(c) do
print (i .. el.t)
io.stderr:write(i .. el.t)
if el.t == "RawBlock" then
print(el.format)
io.stderr:write(el.format)
if el.format == fmt then
table.insert(ranks, {rank = 1, el})
else
table.insert(ranks, {rank = 3, el})
end
else
ranks:insert({rank = 2, i, el})
table.insert(ranks, {rank = 2, el})
end
end
end
table.sort(ranks, cmp)
local winner = ranks[1][1]
e.content = pandoc.List:new()
table.insert(e.content, winner)
return e
end
end
@ -353,6 +423,7 @@ local function metaAdd(meta)
end
return {
{Div = divTrans},
{CodeBlock = codeBlockTrans},
{Meta = metaAdd}
}