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scripts/ansi2html.sh

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#!/bin/sh
# Picked up from https://github.com/pixelb/scripts/blob/master/scripts/ansi2html.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 <philharnish@gmail.com>
# Support `git diff --color` output by
# matching ANSI codes that specify only
# bold or background colour.
# P@draigBrady.com
# 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, ...
# P@draigBrady.com
# 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, P@draigBrady.com
# Handle codes with combined attributes and color.
# Handle isolated <bold> attributes with css.
# Strip more terminal control codes.
# V0.24, 14 Sep 2017
# http://github.com/pixelb/scripts/commits/master/scripts/ansi2html.sh
gawk --version >/dev/null || exit 1
if [ "$1" = "--version" ]; then
printf '0.23\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" ] || [ "$body_only" ] || printf '%s' "<html>
<head>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
<style type=\"text/css\">
"
[ "$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 || length(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(length(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<=length(a);i++) if(i in a) ret=ret a[i]
return ret
}
function fixas(a,s,spc,i,attr,rm,ret) {
spc=length(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'
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