third-party/DPVO/Pangolin/scripts/utils/ansi2html.sh

#!/bin/sh

# Convert ANSI (terminal) colours and attributes to HTML

# Licence: LGPLv2
# Author:
#    http://www.pixelbeat.org/docs/terminal_colours/
# Examples:
#    ls -l --color=always | ansi2html.sh > ls.html
#    git show --color | ansi2html.sh > last_change.html
#    Generally one can use the `script` util to capture full terminal output.
# Changes:
#    V0.1, 24 Apr 2008, Initial release
#    V0.2, 01 Jan 2009, Phil Harnish <[email protected]>
#                         Support `git diff --color` output by
#                         matching ANSI codes that specify only
#                         bold or background colour.
#                       [email protected]
#                         Support `ls --color` output by stripping
#                         redundant leading 0s from ANSI codes.
#                         Support `grep --color=always` by stripping
#                         unhandled ANSI codes (specifically ^[[K).
#    V0.3, 20 Mar 2009, http://eexpress.blog.ubuntu.org.cn/
#                         Remove cat -v usage which mangled non ascii input.
#                         Cleanup regular expressions used.
#                         Support other attributes like reverse, ...
#                       [email protected]
#                         Correctly nest <span> tags (even across lines).
#                         Add a command line option to use a dark background.
#                         Strip more terminal control codes.
#    V0.4, 17 Sep 2009, [email protected]
#                         Handle codes with combined attributes and color.
#                         Handle isolated <bold> attributes with css.
#                         Strip more terminal control codes.
#    V0.26, 16 Nov 2019
#      http://github.com/pixelb/scripts/commits/master/scripts/ansi2html.sh

gawk --version >/dev/null || exit 1

if [ "$1" = "--version" ]; then
    printf '0.26\n' && exit
fi

usage()
{
printf '%s\n' \
'This utility converts ANSI codes in data passed to stdin

It has 4 optional parameters:

--bg=dark --palette=linux|solarized|tango|xterm --css-only|--body-only

E.g.: ls -l --color=always | ansi2html.sh --bg=dark > ls.html' >&2
    exit
}

if [ "$1" = "--help" ]; then
    usage
fi

processArg()
{
    [ "$1" = "--bg=dark" ] && { dark_bg=yes; return; }
    [ "$1" = "--css-only" ] && { css_only=yes; return; }
    [ "$1" = "--body-only" ] && { body_only=yes; return; }
    if [ "$1" = "--palette=solarized" ]; then
       # See http://ethanschoonover.com/solarized
       P0=073642;  P1=D30102;  P2=859900;  P3=B58900;
       P4=268BD2;  P5=D33682;  P6=2AA198;  P7=EEE8D5;
       P8=002B36;  P9=CB4B16; P10=586E75; P11=657B83;
      P12=839496; P13=6C71C4; P14=93A1A1; P15=FDF6E3;
      return;
    elif [ "$1" = "--palette=solarized-xterm" ]; then
       # Above mapped onto the xterm 256 color palette
       P0=262626;  P1=AF0000;  P2=5F8700;  P3=AF8700;
       P4=0087FF;  P5=AF005F;  P6=00AFAF;  P7=E4E4E4;
       P8=1C1C1C;  P9=D75F00; P10=585858; P11=626262;
      P12=808080; P13=5F5FAF; P14=8A8A8A; P15=FFFFD7;
      return;
    elif [ "$1" = "--palette=tango" ]; then
       # Gnome default
       P0=000000;  P1=CC0000;  P2=4E9A06;  P3=C4A000;
       P4=3465A4;  P5=75507B;  P6=06989A;  P7=D3D7CF;
       P8=555753;  P9=EF2929; P10=8AE234; P11=FCE94F;
      P12=729FCF; P13=AD7FA8; P14=34E2E2; P15=EEEEEC;
      return;
    elif [ "$1" = "--palette=xterm" ]; then
       P0=000000;  P1=CD0000;  P2=00CD00;  P3=CDCD00;
       P4=0000EE;  P5=CD00CD;  P6=00CDCD;  P7=E5E5E5;
       P8=7F7F7F;  P9=FF0000; P10=00FF00; P11=FFFF00;
      P12=5C5CFF; P13=FF00FF; P14=00FFFF; P15=FFFFFF;
      return;
    else # linux console
       P0=000000;  P1=AA0000;  P2=00AA00;  P3=AA5500;
       P4=0000AA;  P5=AA00AA;  P6=00AAAA;  P7=AAAAAA;
       P8=555555;  P9=FF5555; P10=55FF55; P11=FFFF55;
      P12=5555FF; P13=FF55FF; P14=55FFFF; P15=FFFFFF;
      [ "$1" = "--palette=linux" ] && return;
    fi
}

processArg #defaults
for var in "$@"; do processArg $var; done
[ "$css_only" ] && [ "$body_only" ] && usage

# Mac OSX's GNU sed is installed as gsed
# use e.g. homebrew 'gnu-sed' to get it
if ! sed --version >/dev/null 2>&1; then
  if gsed --version >/dev/null 2>&1; then
    alias sed=gsed
  else
    echo "Error, can't find an acceptable GNU sed." >&2
    exit 1
  fi
fi

[ "$css_only" ] || [ "$body_only" ] || printf '%s' "<html>

<head>

<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>

<style type=\"text/css\">

pre { white-space: pre-wrap; }

"
[ "$body_only" ] || printf ".ef0,.f0 { color: #$P0; } .eb0,.b0 { background-color: #$P0; }

.ef1,.f1 { color: #$P1; } .eb1,.b1 { background-color: #$P1; }

.ef2,.f2 { color: #$P2; } .eb2,.b2 { background-color: #$P2; }

.ef3,.f3 { color: #$P3; } .eb3,.b3 { background-color: #$P3; }

.ef4,.f4 { color: #$P4; } .eb4,.b4 { background-color: #$P4; }

.ef5,.f5 { color: #$P5; } .eb5,.b5 { background-color: #$P5; }

.ef6,.f6 { color: #$P6; } .eb6,.b6 { background-color: #$P6; }

.ef7,.f7 { color: #$P7; } .eb7,.b7 { background-color: #$P7; }

.ef8, .f0 > .bold,.bold > .f0 { color: #$P8; font-weight: normal; }

.ef9, .f1 > .bold,.bold > .f1 { color: #$P9; font-weight: normal; }

.ef10,.f2 > .bold,.bold > .f2 { color: #$P10; font-weight: normal; }

.ef11,.f3 > .bold,.bold > .f3 { color: #$P11; font-weight: normal; }

.ef12,.f4 > .bold,.bold > .f4 { color: #$P12; font-weight: normal; }

.ef13,.f5 > .bold,.bold > .f5 { color: #$P13; font-weight: normal; }

.ef14,.f6 > .bold,.bold > .f6 { color: #$P14; font-weight: normal; }

.ef15,.f7 > .bold,.bold > .f7 { color: #$P15; font-weight: normal; }

.eb8  { background-color: #$P8; }

.eb9  { background-color: #$P9; }

.eb10 { background-color: #$P10; }

.eb11 { background-color: #$P11; }

.eb12 { background-color: #$P12; }

.eb13 { background-color: #$P13; }

.eb14 { background-color: #$P14; }

.eb15 { background-color: #$P15; }

"
# The default xterm 256 colour palette
for red in 0 1 2 3 4 5 ; do
  for green in 0 1 2 3 4 5 ; do
    for blue in 0 1 2 3 4 5 ; do
      c=$((16 + ($red * 36) + ($green * 6) + $blue))
      r=$((($red * 40 + 55) * ($red > 0)))
      g=$((($green * 40 + 55) * ($green > 0)))
      b=$((($blue * 40 + 55) * ($blue > 0)))
      [ "$body_only" ] || printf ".ef%d { color: #%2.2x%2.2x%2.2x; } " $c $r $g $b
      [ "$body_only" ] || printf ".eb%d { background-color: #%2.2x%2.2x%2.2x; }\n" $c $r $g $b
    done
  done
done
for gray in $(seq 0 23); do
  c=$(($gray+232))
  l=$(($gray*10 + 8))
  [ "$body_only" ] || printf ".ef%d { color: #%2.2x%2.2x%2.2x; } " $c $l $l $l
  [ "$body_only" ] || printf ".eb%d { background-color: #%2.2x%2.2x%2.2x; }\n" $c $l $l $l
done

[ "$body_only" ] || printf '%s' '

.f9 { color: '`[ "$dark_bg" ] && printf "#$P7;" || printf "#$P0;"`' }

.b9 { background-color: #'`[ "$dark_bg" ] && printf $P0 || printf $P15`'; }

.f9 > .bold,.bold > .f9, body.f9 > pre > .bold {

  /* Bold is heavy black on white, or bright white

     depending on the default background */

  color: '`[ "$dark_bg" ] && printf "#$P15;" || printf "#$P0;"`'

  font-weight: '`[ "$dark_bg" ] && printf 'normal;' || printf 'bold;'`'

}

.reverse {

  /* CSS does not support swapping fg and bg colours unfortunately,

     so just hardcode something that will look OK on all backgrounds. */

  '"color: #$P0; background-color: #$P7;"'

}

.underline { text-decoration: underline; }

.line-through { text-decoration: line-through; }

.blink { text-decoration: blink; }



/* Avoid pixels between adjacent span elements.

   Note this only works for lines less than 80 chars

   where we close span elements on the same line.

span { display: inline-block; }

*/

'
[ "$body_only" ] || [ "$css_only" ] && printf '%s\n' \
'To use the css generated from --css-only, do: '\
'<head><link rel="stylesheet" type="text/css" href="style.css"></head>' >&2
[ "$css_only" ] && exit
[ "$body_only" ] || printf '%s' '</style>

</head>



<body class="f9 b9">

<pre>

'
[ "$body_only" ] && printf '%s\n' 'Be sure to use <body class="f9 b9"> and <pre>' >&2

p='\x1b\['        #shortcut to match escape codes

# Handle various xterm control sequences.
# See /usr/share/doc/xterm-*/ctlseqs.txt
sed "

# escape ampersand and quote

s#&#\&amp;#g; s#\"#\&quot;#g;

s#\x1b[^\x1b]*\x1b\\\##g  # strip anything between \e and ST

s#\x1b][0-9]*;[^\a]*\a##g # strip any OSC (xterm title etc.)



s#\r\$## # strip trailing \r



# strip other non SGR escape sequences

s#[\x07]##g

s#\x1b[]>=\][0-9;]*##g

s#\x1bP+.\{5\}##g

# Mark cursor positioning codes \"Jr;c;

s#${p}\([0-9]\{1,2\}\)G#\"J;\1;#g

s#${p}\([0-9]\{1,2\}\);\([0-9]\{1,2\}\)H#\"J\1;\2;#g



# Mark clear as \"Cn where n=1 is screen and n=0 is to end-of-line

s#${p}H#\"C1;#g

s#${p}K#\"C0;#g

# Mark Cursor move columns as \"Mn where n is +ve for right, -ve for left

s#${p}C#\"M1;#g

s#${p}\([0-9]\{1,\}\)C#\"M\1;#g

s#${p}\([0-9]\{1,\}\)D#\"M-\1;#g

s#${p}\([0-9]\{1,\}\)P#\"X\1;#g



s#${p}[0-9;?]*[^0-9;?m]##g



" |

# Normalize the input before transformation
sed "

# escape HTML (ampersand and quote done above)

s#>#\&gt;#g; s#<#\&lt;#g;



# handle truecolor

s#${p}38;2;\([0-9]\{1,3\}\);\([0-9]\{1,3\}\);\([0-9]\{1,3\}\)m#\

<span style=\"color:rgb(\1\,\2\,\3\)\">#g

s#${p}48;2;\([0-9]\{1,3\}\);\([0-9]\{1,3\}\);\([0-9]\{1,3\}\)m#\

<span style=\"background-color:rgb(\1\,\2\,\3\)\">#g



# normalize SGR codes a little



# split 256 colors out and mark so that they're not

# recognised by the following 'split combined' line

:e

s#${p}\([0-9;]\{1,\}\);\([34]8;5;[0-9]\{1,3\}\)m#${p}\1m${p}¬\2m#g; t e

s#${p}\([34]8;5;[0-9]\{1,3\}\)m#${p}¬\1m#g;



:c

s#${p}\([0-9]\{1,\}\);\([0-9;]\{1,\}\)m#${p}\1m${p}\2m#g; t c   # split combined

s#${p}0\([0-7]\)#${p}\1#g                                 #strip leading 0

s#${p}1m\(\(${p}[4579]m\)*\)#\1${p}1m#g                   #bold last (with clr)

s#${p}m#${p}0m#g                                          #add leading 0 to norm



# undo any 256 color marking

s#${p}¬\([34]8;5;[0-9]\{1,3\}\)m#${p}\1m#g;



# map 16 color codes to color + bold

s#${p}9\([0-7]\)m#${p}3\1m${p}1m#g;

s#${p}10\([0-7]\)m#${p}4\1m${p}1m#g;



# change 'reset' code to \"R

s#${p}0m#\"R;#g

" |

# Convert SGR sequences to HTML
sed "

# common combinations to minimise html (optional)

:f

s#${p}3[0-7]m${p}3\([0-7]\)m#${p}3\1m#g; t f

:b

s#${p}4[0-7]m${p}4\([0-7]\)m#${p}4\1m#g; t b

s#${p}3\([0-7]\)m${p}4\([0-7]\)m#<span class=\"f\1 b\2\">#g

s#${p}4\([0-7]\)m${p}3\([0-7]\)m#<span class=\"f\2 b\1\">#g



s#${p}1m#<span class=\"bold\">#g

s#${p}4m#<span class=\"underline\">#g

s#${p}5m#<span class=\"blink\">#g

s#${p}7m#<span class=\"reverse\">#g

s#${p}9m#<span class=\"line-through\">#g

s#${p}3\([0-9]\)m#<span class=\"f\1\">#g

s#${p}4\([0-9]\)m#<span class=\"b\1\">#g



s#${p}38;5;\([0-9]\{1,3\}\)m#<span class=\"ef\1\">#g

s#${p}48;5;\([0-9]\{1,3\}\)m#<span class=\"eb\1\">#g



s#${p}[0-9;]*m##g # strip unhandled codes

" |

# Convert alternative character set and handle cursor movement codes
# Note we convert here, as if we do at start we have to worry about avoiding
# conversion of SGR codes etc., whereas doing here we only have to
# avoid conversions of stuff between &...; or <...>
#
# Note we could use sed to do this based around:
#   sed 'y/abcdefghijklmnopqrstuvwxyz{}`~/▒␉␌␍␊°±␤␋┘┐┌└┼⎺⎻─⎼⎽├┤┴┬│≤≥π£◆·/'
# However that would be very awkward as we need to only conv some input.
# The basic scheme that we do in the awk script below is:
#  1. enable transliterate once "T1; is seen
#  2. disable once "T0; is seen (may be on diff line)
#  3. never transliterate between &; or <> chars
#  4. track x,y movements and active display mode at each position
#  5. buffer line/screen and dump when required
sed "

# change 'smacs' and 'rmacs' to \"T1 and \"T0 to simplify matching.

s#\x1b(0#\"T1;#g;

s#\x0E#\"T1;#g;



s#\x1b(B#\"T0;#g

s#\x0F#\"T0;#g

" |
(
gawk '

function dump_line(l,del,c,blanks,ret) {

  for(c=1;c<maxX;c++) {

    if ((c SUBSEP l) in attr || alength(cur)) {

      ret = ret blanks fixas(cur,attr[c,l])

      if(del) delete attr[c,l]

      blanks=""

    }

    if ((c SUBSEP l) in dump) {

      ret=ret blanks dump[c,l]

      if(del) delete dump[c,l]

      blanks=""

    } else blanks=blanks " "

  }

  if(alength(cur)) ret=ret blanks

  return ret

}



function dump_screen(l,ret) {

  for(l=1;l<=maxY;l++)

    ret=ret dump_line(l,0) "\n"

  return ret fixas(cur, "")

}



function atos(a,i,ret) {

  for(i=1;i<=alength(a);i++) if(i in a) ret=ret a[i]

  return ret

}



function alength(a, i, k) {

    k = 0

    for(i in a) k++

    return k

}



function fixas(a,s,spc,i,attr,rm,ret) {

  spc=alength(a)

  l=split(s,attr,">")

  for(i=1;i<=spc;i++) {

    rm=rm?rm:(a[i]!=attr[i]">")

    if(rm) {

      ret=ret "</span>"

      delete a[i];

    }

  }

  for(i=1;i<l;i++) {

    attr[i]=attr[i]">"

    if(a[i]!=attr[i]) {

      a[i]=attr[i]

      ret = ret attr[i]

    }

  }

  return ret

}



function encode(string,start,end,i,ret,pos,sc,buf) {

   if(!end) end=length(string);

   if(!start) start=1;

   state=3

   for(i=1;i<=length(string);i++) {

     c=substr(string,i,1)

     if(state==2) {

       sc=sc c

       if(c==";") {

          c=sc

          state=last_mode

       } else continue

     } else {

       if(c=="\r") { x=1; continue }

       if(c=="<") {

         # Change attributes - store current active

         # attributes in span array

         split(substr(string,i),cord,">");

         i+=length(cord[1])

         span[++spc]=cord[1] ">"

         continue

       }

       else if(c=="&") {

         # All goes to single position till we see a semicolon

         sc=c

         state=2

         continue

       }

       else if(c=="\b") {

          # backspace move insertion point back 1

          if(spc) attr[x,y]=atos(span)

          x=x>1?x-1:1

          continue

       }

       else if(c=="\"") {

          split(substr(string,i+2),cord,";")

          cc=substr(string,i+1,1);

          if(cc=="T") {

              # Transliterate on/off

              if(cord[1]==1&&state==3) last_mode=state=4

              if(cord[1]==0&&state==4) last_mode=state=3

          }

          else if(cc=="C") {

              # Clear

              if(cord[1]+0) {

                # Screen - if Recording dump screen

                if(dumpStatus==dsActive) ret=ret dump_screen()

                dumpStatus=dsActive

                delete dump

                delete attr

                x=y=1

              } else {

                # To end of line

                for(pos=x;pos<maxX;pos++) {

                  dump[pos,y]=" "

                  if (!spc) delete attr[pos,y]

                  else attr[pos,y]=atos(span)

                }

              }

          }

          else if(cc=="J") {

              # Jump to x,y

              i+=length(cord[2])+1

              # If line is higher - dump previous screen

              if(dumpStatus==dsActive&&cord[1]<y) {

                ret=ret dump_screen();

                dumpStatus=dsNew;

              }

              x=cord[2]

              if(length(cord[1]) && y!=cord[1]){

                y=cord[1]

                if(y>maxY) maxY=y

                # Change y - start recording

                dumpStatus=dumpStatus?dumpStatus:dsReset

              }

          }

          else if(cc=="M") {

              # Move left/right on current line

              x+=cord[1]

          }

          else if(cc=="X") {

              # delete on right

              for(pos=x;pos<=maxX;pos++) {

                nx=pos+cord[1]

                if(nx<maxX) {

                  if((nx SUBSEP y) in attr) attr[pos,y] = attr[nx,y]

                  else delete attr[pos,y]

                  if((nx SUBSEP y) in dump) dump[pos,y] = dump[nx,y]

                  else delete dump[pos,y]

                } else if(spc) {

                  attr[pos,y]=atos(span)

                  dump[pos,y]=" "

                }

              }

          }

          else if(cc=="R") {

              # Reset attributes

              while(spc) delete span[spc--]

          }

          i+=length(cord[1])+2

          continue

       }

       else if(state==4&&i>=start&&i<=end&&c in Trans) c=Trans[c]

     }

     if(dumpStatus==dsReset) {

       delete dump

       delete attr

       ret=ret"\n"

       dumpStatus=dsActive

     }

     if(dumpStatus==dsNew) {

       # After moving/clearing we are now ready to write

       # somthing to the screen so start recording now

       ret=ret"\n"

       dumpStatus=dsActive

     }

     if(dumpStatus==dsActive||dumpStatus==dsOff) {

       dump[x,y] = c

       if(!spc) delete attr[x,y]

       else attr[x,y] = atos(span)

       if(++x>maxX) maxX=x;

     }

    }

    # End of line if dumping increment y and set x back to first col

    x=1

    if(!dumpStatus) return ret dump_line(y,1);

    else if(++y>maxY) maxY=y;

    return ret

}

BEGIN{

  OFS=FS

  # dump screen status

  dsOff=0    # Not dumping screen contents just write output direct

  dsNew=1    # Just after move/clear waiting for activity to start recording

  dsReset=2  # Screen cleared build new empty buffer and record

  dsActive=3 # Currently recording

  F="abcdefghijklmnopqrstuvwxyz{}`~"

  T="▒␉␌␍␊°±␤␋┘┐┌└┼⎺⎻─⎼⎽├┤┴┬│≤≥π£◆·"

  maxX=80

  delete cur;

  x=y=1

  for(i=1;i<=length(F);i++)Trans[substr(F,i,1)]=substr(T,i,1);

}



{ $0=encode($0) }

1

END {

  if(dumpStatus) {

    print dump_screen();

  }

}'
)

[ "$body_only" ] || printf '</pre>

</body>

</html>\n'