423 lines
13 KiB
Lua
423 lines
13 KiB
Lua
-- this is essentially
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-- https://github.com/jupyter/nbconvert/blob/main/nbconvert/filters/ansi.py
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-- converted to lua
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-- good list of ANSI escape sequences:
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-- https://gist.github.com/fnky/458719343aabd01cfb17a3a4f7296797
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local css = [[
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<!-- CSS added by ANSI escape sequences filter -->
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<style>
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.ansi {line-height:1; padding:0; margin: 0; letter-spacing:0;font-family:JuliaMono;}
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/* console foregrounds and backgrounds */
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pre .ansi-black-fg { color: #3e424d; }
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pre .ansi-red-fg { color: #e75c58; }
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pre .ansi-green-fg { color: #00a250; }
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pre .ansi-yellow-fg { color: #ddb62b; }
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pre .ansi-blue-fg { color: #208ffb; }
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pre .ansi-magenta-fg { color: #d160c4; }
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pre .ansi-cyan-fg { color: #60c6c8; }
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pre .ansi-white-fg { color: #c5c1b4; }
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pre .ansi-black-bg { background-color: #3e424d; }
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pre .ansi-red-bg { background-color: #e75c58; }
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pre .ansi-green-bg { background-color: #00a250; }
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pre .ansi-yellow-bg { background-color: #ddb62b; }
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pre .ansi-blue-bg { background-color: #208ffb; }
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pre .ansi-magenta-bg { background-color: #d160c4; }
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pre .ansi-cyan-bg { background-color: #60c6c8; }
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pre .ansi-white-bg { background-color: #c5c1b4; }
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pre .ansi-black-intense-fg { color: #282c36; }
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pre .ansi-red-intense-fg { color: #b22b31; }
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pre .ansi-green-intense-fg { color: #007427; }
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pre .ansi-yellow-intense-fg { color: #b27d12; }
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pre .ansi-blue-intense-fg { color: #0065ca; }
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pre .ansi-magenta-intense-fg { color: #a03196; }
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pre .ansi-cyan-intense-fg { color: #258f8f; }
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pre .ansi-white-intense-fg { color: #a1a6b2; }
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pre .ansi-black-intense-bg { background-color: #282c36; }
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pre .ansi-red-intense-bg { background-color: #b22b31; }
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pre .ansi-green-intense-bg { background-color: #007427; }
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pre .ansi-yellow-intense-bg { background-color: #b27d12; }
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pre .ansi-blue-intense-bg { background-color: #0065ca; }
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pre .ansi-magenta-intense-bg { background-color: #a03196; }
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pre .ansi-cyan-intense-bg { background-color: #258f8f; }
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pre .ansi-white-intense-bg { background-color: #a1a6b2; }
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pre .ansi-default-inverse-fg { color: rgba(255, 255, 255, 1); }
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pre .ansi-default-inverse-bg { background-color: #111111; }
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pre .ansi-bold { font-weight: bold; }
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pre .ansi-underline { text-decoration: underline; }
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</style>
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]]
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local latexpreamble = [[
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\usepackage{fancyvrb}
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\usepackage{fontspec}
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\usepackage{xcolor}
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\renewenvironment{verbatim}{%
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\VerbatimEnvironment
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\begin{Verbatim}[commandchars=\\\{\}]%
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}{%
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\end{Verbatim}%
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}
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\setmonofont{JuliaMono}[
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Scale = MatchLowercase,
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UprightFont = *-Regular,
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BoldFont = *-Bold,
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ItalicFont = *-RegularItalic,
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BoldItalicFont = *-BoldItalic,
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]
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\definecolor{ansi-black}{HTML}{3E424D}
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\definecolor{ansi-black-intense}{HTML}{282C36}
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\definecolor{ansi-red}{HTML}{E75C58}
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\definecolor{ansi-red-intense}{HTML}{B22B31}
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\definecolor{ansi-green}{HTML}{00A250}
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\definecolor{ansi-green-intense}{HTML}{007427}
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\definecolor{ansi-yellow}{HTML}{DDB62B}
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\definecolor{ansi-yellow-intense}{HTML}{B27D12}
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\definecolor{ansi-blue}{HTML}{208FFB}
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\definecolor{ansi-blue-intense}{HTML}{0065CA}
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\definecolor{ansi-magenta}{HTML}{D160C4}
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\definecolor{ansi-magenta-intense}{HTML}{A03196}
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\definecolor{ansi-cyan}{HTML}{60C6C8}
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\definecolor{ansi-cyan-intense}{HTML}{258F8F}
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\definecolor{ansi-white}{HTML}{C5C1B4}
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\definecolor{ansi-white-intense}{HTML}{A1A6B2}
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\definecolor{ansi-default-inverse-fg}{HTML}{FFFFFF}
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\definecolor{ansi-default-inverse-bg}{HTML}{000000}
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]]
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local ANSI_COLORS = {
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"ansi-black",
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"ansi-red",
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"ansi-green",
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"ansi-yellow",
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"ansi-blue",
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"ansi-magenta",
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"ansi-cyan",
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"ansi-white",
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"ansi-black-intense",
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"ansi-red-intense",
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"ansi-green-intense",
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"ansi-yellow-intense",
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"ansi-blue-intense",
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"ansi-magenta-intense",
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"ansi-cyan-intense",
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"ansi-white-intense"
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}
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local flag = false -- set to true if we find ANSI sequences, used by Meta
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local function get_extended_color(numbers)
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local n = table.remove(numbers, 1)
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local r,g,b,idx
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if n == 2 and #numbers >=3 then
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-- 24bit RGB
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r = table.remove(numbers, 1)
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g = table.remove(numbers, 1)
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b = table.remove(numbers, 1)
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elseif n == 5 and #numbers >= 1 then
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-- 256 colors
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idx = table.remove(numbers, 1)
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if idx < 16 then
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-- 16 default terminal colors
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return idx
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elseif idx < 232 then
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-- 6x6x6 color cube, see http://stackoverflow.com/a/27165165/500098
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r = (idx - 16) // 36
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r = 55 + r * 40
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if r < 0 then r = 0 end
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g = ((idx - 16) % 36) // 6
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g = 55 + g * 40
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if g < 0 then g = 0 end
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b = (idx - 16) % 6
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b = 55 + b * 40
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if b < 0 then b = 0 end
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elseif idx < 256 then
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-- grayscale, see http://stackoverflow.com/a/27165165/500098
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r = (idx - 232) * 10 + 8
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g = r
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b = r
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end
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end
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return {r, g, b}
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end
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--[=[
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local re = require "re"
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local ANSI = re.compile [[
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'\x1b%[' {.*?} {[@-~]}
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]]
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--]=]
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local function LaTeXconverter(fg, bg, bold, underline, inverse)
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if not (fg or bg or bold or underline or inverse) then
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return "",""
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end
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local starttag = ""
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local endtag = ""
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if inverse then
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fg, bg = bg, fg
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end
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if type(fg) == "number" then
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starttag = starttag .. [[\textcolor{]] .. ANSI_COLORS[fg+1] .. "}{"
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endtag = "}" .. endtag
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elseif type(fg) == "table" then
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-- See http://tex.stackexchange.com/a/291102/13684
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starttag = starttag .. [[\def\tcRGB{\textcolor[RGB]}\expandafter]]
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starttag = starttag .. string.format([[\tcRGB\expandafter{\detokenize{%d,%d,%d}}{]], fg[1], fg[2], fg[3])
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endtag = "}" .. endtag
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elseif inverse then
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starttag = starttag .. [[\textcolor{ansi-default-inverse-fg}{]]
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endtag = "}" .. endtag
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end
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if type(bg) == "number" then
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starttag = starttag .. [[\setlength{\fboxsep}{0pt}]]
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starttag = starttag .. [[\colorbox{]] .. ANSI_COLORS[bg+1] .. "}{"
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endtag = [[\strut}]] .. endtag
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elseif type(bg) == "table" then
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-- See http://tex.stackexchange.com/a/291102/13684
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starttag = starttag .. [[\setlength{\fboxsep}{0pt}]]
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starttag = starttag .. [[\def\cbRGB{\colorbox[RGB]}\expandafter]]
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starttag = starttag .. string.format([[\cbRGB\expandafter{\detokenize{%d,%d,%d}}{]], bg[1], bg[2], bg[3])
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endtag = [[\strut}]] .. endtag
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elseif inverse then
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starttag = starttag .. [[\setlength{\fboxsep}{0pt}]]
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starttag = starttag .. [[\colorbox{ansi-default-inverse-bg}{]]
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endtag = [[\strut}]] .. endtag
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end
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if bold then
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starttag = starttag .. [[\textbf{]]
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endtag = "}" .. endtag
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end
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if underline then
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starttag = starttag .. [[\underline{]]
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endtag = "}" .. endtag
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end
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return starttag, endtag
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end
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local function HTMLconverter(fg, bg, bold, underline, inverse)
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if not (fg or bg or bold or underline or inverse) then
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return "",""
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end
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local classes = {}
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local styles = {}
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local type = type -- more efficient?
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local next = next
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if inverse then
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fg, bg = bg, fg
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end
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if type(fg) == "number" then
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table.insert(classes, ANSI_COLORS[fg+1] .. "-fg")
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elseif type(fg) == "table" then
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table.insert(styles, string.format("color: rgb(%d,%d,%d)", fg[1], fg[2], fg[3]))
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elseif inverse then
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table.insert(classes, "ansi-default-inverse-fg")
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end
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if type(bg) == "number" then
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table.insert(classes, ANSI_COLORS[bg+1] .. "-bg")
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elseif type(bg) == "table" then
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table.insert(styles, string.format("background-color: rgb(%d,%d,%d)",
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bg[1], bg[2], bg[3]))
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elseif inverse then
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table.insert(classes, "ansi-default-inverse-bg")
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end
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if bold then
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table.insert(classes, "ansi-bold")
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end
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if underline then
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table.insert(classes, "ansi-underline")
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end
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local starttag = "<span"
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if next(classes) ~= nil then
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starttag = starttag .. ' class="' .. table.concat(classes, " ") .. '"'
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end
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if next(styles) ~= nil then
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starttag = starttag .. ' style="' .. table.concat(styles, " ") .. '"'
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end
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return starttag..">","</span>"
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end
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local function codeBlockTrans(e)
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local converter, fmt
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if FORMAT:match 'latex' then
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converter = LaTeXconverter
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fmt = 'latex'
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elseif FORMAT:match 'html' then
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converter = HTMLconverter
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fmt = 'html'
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else
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return
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end
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local out=""
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if string.find(e.text, "\x1b%[") then
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flag = true
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local bold = false
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local underline = false
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local inverse = false
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local text = e.text
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local chunk = ""
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local fg = nil
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local bg = nil
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local starttag = ""
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local endtag = ""
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local numbers={}
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while text ~= "" do
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numbers = {}
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local s1, e1, c1, d1 = string.find(text, "\x1b%[(.-)([@-~])")
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if s1 then
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if d1 == "m" then
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for i in string.gmatch(c1, "([^;]*)") do
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table.insert(numbers, tonumber(i))
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end
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else
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io.stderr:write("Unsupported ANSI sequence ESC["..c1..d1.." ignored\n" )
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end
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chunk, text = text:sub(1, s1-1), text:sub(e1+1)
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else
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chunk, text = text, ""
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end
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if chunk ~= "" then
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if bold and type(fg)=="number" and fg<8 then
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starttag, endtag = converter(fg+8, bg, bold, underline, inverse)
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else
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starttag, endtag = converter(fg, bg, bold, underline, inverse)
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end
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out = out .. starttag .. chunk .. endtag
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end
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while next(numbers) ~= nil do
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local n = table.remove(numbers, 1)
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if n == 0 then
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fg = nil
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bg = nil
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bold = false
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inverse = false
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underline = false
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elseif n == 1 then
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bold = true
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elseif n == 4 then
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underline = true
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elseif n == 5 then
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bold = true -- 'blinking'
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elseif n == 7 then
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inverse = true
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elseif n == 21 or n == 22 then
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bold = false
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elseif n == 24 then
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underline = false
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elseif n == 27 then
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inverse = false
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elseif n >= 30 and n <= 37 then
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fg = n - 30
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elseif n == 38 then
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fg = get_extended_color(numbers)
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elseif n == 39 then
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fg = nil
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elseif n >= 40 and n <= 47 then
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bg = n - 40
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elseif n == 48 then
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bg = get_extended_color(numbers)
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elseif n == 49 then
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bg = nil
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elseif n >= 90 and n <= 97 then
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fg = n + 8 - 90
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elseif n >= 100 and n <= 107 then
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bg = n + 8 - 100
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else
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io.stderr:write(string.format("ESC sequence with unknown code %d before:\n",n))
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io.stderr:write(chunk.."\n")
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end
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end
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end
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if fmt == 'html' then
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return pandoc.RawBlock(fmt, '<pre class="ansi"><code class="ansi">'..out..'</code></pre>')
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end
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if fmt == 'latex' then
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return pandoc.RawBlock(fmt, "\\begin{verbatim}\n"..out.."\n\\end{verbatim}")
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end
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end
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end
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-- algo from https://github.com/jgm/pandoc/commit/77faccb505992c944cd1b92f50e4e00d2927682b
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-- simulate --ipynb-outbut=best, but w/o removing ANSI colors
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-- consider only formats html and latex
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local function divTrans(e)
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local fmt
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if FORMAT:match 'latex' then
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fmt = 'latex'
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elseif FORMAT:match 'html' then
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fmt = 'html'
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else
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return
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end
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local function cmp(a,b)
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return a["rank"] < b["rank"]
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end
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if e.classes[1] == "output" then
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local c = e.content
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local ranks = {}
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for i, el in pairs(c) do
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if el.t == "RawBlock" then
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if el.format == fmt then
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table.insert(ranks, {rank = 1, el})
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else
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table.insert(ranks, {rank = 3, el})
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end
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else
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table.insert(ranks, {rank = 2, el})
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end
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end
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table.sort(ranks, cmp)
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local winner = ranks[1][1]
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e.content = pandoc.List:new()
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table.insert(e.content, winner)
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return e
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end
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end
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local function metaAdd(meta)
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if flag then
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-- read current "header-includes" from metadata, or make a new one
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-- and add css to the end of "header-includes"
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local current = meta['header-includes'] or pandoc.MetaList{meta['header-includes']}
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if FORMAT:match 'html' then
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current[#current+1] = pandoc.MetaBlocks(pandoc.RawBlock("html", css))
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end
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if FORMAT:match 'latex' then
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current[#current+1] = pandoc.MetaBlocks(pandoc.RawBlock("latex", latexpreamble))
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end
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meta['header-includes'] = current
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return(meta)
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end
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end
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return {
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{Div = divTrans},
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{CodeBlock = codeBlockTrans},
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{Meta = metaAdd}
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}
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