#!/bin/sh

# An enhanced and more portable ls -l

# Licence: LGPLv2

# Author:

# http://www.pixelbeat.org/

# Notes:

# A symlink target may lose info as there are no mode bits to highlight.

# Changes:

# V0.1, 18 Sep 2009, Initial release

# V0.2, 30 Sep 2009, Correctly strip "total" line for all locales

# Modify colors even when dircolors doesn't support $TERM

# Don't error for ls without --group-dir or --no-group

# V0.3, 21 Oct 2009, Handle older ls' which pepper output with reset codes

#

# V1.4, 21 Nov 2016

# http://github.com/pixelb/scripts/commits/master/scripts/l

# apply thousands separator to file sizes

BLOCK_SIZE=\'1; export BLOCK_SIZE

# Get access to grep that supports POSIX -E option on Solaris.

# Note we don't just add /usr/xpg4/bin to PATH as that has

# an incompatible sed.

if echo . | /usr/xpg4/bin/grep -E -q . 2>/dev/null; then

egrep='/usr/xpg4/bin/grep -E'

else

egrep='grep -E'

fi

# Traditional unix time format with abbreviated month translated from locale.

# en_* locales default to ISO format without this for reasons discussed here:

# http://lists.gnu.org/archive/html/bug-coreutils/2009-09/msg00433.html

# Note as of coreutils 8.6, `ls` will again use traditional rather than ISO

# format, unless otherwise specified by translators.

TIME_STYLE='+%b %e %Y

%b %e %H:%M'

export TIME_STYLE

# Add a fancy symlink arrow

if echo "$LANG" | grep -i "utf-*8$" >/dev/null; then

SYM_ARROW="▪▶"

else

SYM_ARROW="->"

fi

ESC=`printf '\033'`

# Disable color if the current $TERM doesn't support it

if ! tput setaf 1 >/dev/null 2>&1 && ! tput AF 1 >/dev/null 2>&1; then

color_when=

# enable highlighting if outputting to terminal or forcing

elif test -t 1 \

|| echo "$*" | $egrep -- "--color( |=always|$)" >/dev/null; then

# Note if the user specifies --color=auto then that will override this

# and hence the output will not be colored :(

color_when=always

if tput bold >/dev/null 2>&1; then #terminfo

BLD=`tput bold`

RST=`tput sgr0`

HLI=`tput smso`

elif tput md >/dev/null 2>&1; then #termcap

BLD=`tput md`

RST=`tput me`

HLI=`tput so`

fi

LS_HLI=`echo "$HLI" | sed "s/$ESC\[\(.*\)m/\1/"`

else

color_when=auto

fi

ls=ls #default to standard name

{ ls --version >/dev/null 2>&1; } ||

{ gls --color -d . >/dev/null 2>&1 && ls=gls; } || NONGNU=1

if [ "$color_when" ]; then

if [ "$NONGNU" ]; then

{ colorls -d .; } >/dev/null 2>&1 && ls=colorls # for OpenBSD

$ls -G -d . >/dev/null 2>&1 && color_opt=-G #not supported on Solaris

[ "$color_when" = "always" ] && { CLICOLOR_FORCE=1; export CLICOLOR_FORCE; }

color_when=

# Turn off the confusing different background colors

# as we'll highlight the mode bits instead. Also change the

# main colors to match the default one on linux (coreutils).

LSCOLORS="ExGxcxdxCxegedCxCxExEx"; export LSCOLORS

else

color_opt='--color='

color_never="--color=never"

# modify the coreutils default colors if distro or user colors not set

[ "$LS_COLORS" ] || eval `dircolors`

# xterm-256color not supported by older dircolors for example

[ "$LS_COLORS" ] || eval `TERM=xterm dircolors`

# Turn off the confusing entries with different backgrounds

# as we'll highlight the mode bits and hardlink count instead.

#

# Also turn off capability colouring even though we don't

# highlight anything in lieu of it, as this will short circuit

# the slow capability checks within ls

#

# Also we reset the dangling symlink color to "highlight"

# as it defaults to blinking. We could do all this in ~/.dir_colors

# but so this script is more general, we do it here.

# Ensure LS_COLORS is delimited with ':' to simplify the following regexes.

# Otherwise we'd have to consider using word boundaries (\b, \<, [[:<:]]),

# but those are non portable.

LS_COLORS=":$LS_COLORS:"; export LS_COLORS

# Newer ls use "mh" to represent the color for multi hardlinked

# files so handle the backwards incompatibility with "hl"

if dircolors | grep ":mh=" >/dev/null; then

hl_no_color="s/:hl=[^:]*:/:mh=:/; s/:mh=[^:]*:/:mh=:/"

elif dircolors | grep ":hl=" >/dev/null; then

hl_no_color="s/:mh=[^:]*:/:hl=:/; s/:hl=[^:]*:/:hl=:/"

fi

# The extra quoting (wrapping in "") is required for

# speed in bash where it inefficiently tries to glob

# for each *.ext component of LS_COLORS, which is

# noticeably slow in directories with many files.

eval "`

echo LS_COLORS=\'\"$LS_COLORS\"\'\; |

sed \"

$hl_no_color

s/:su=[^:]*:/:su=:/

s/:sg=[^:]*:/:sg=:/

s/:ow=[^:]*:/:ow=:/

s/:st=[^:]*:/:st=:/

s/:tw=[^:]*:/:tw=:/

s/:ca=[^:]*:/:ca=:/

s/:mi=[^:]\{1,\}:/:mi=$LS_HLI:/

\"

echo 'export LS_COLORS'

`"

fi

fi

# Get locale total string to match on

total=`$ls -sl $color_never / | sed 's/\([^ ]*\).*/\1/;q'`

# Use these options if available

$ls --group-directories-first -d . >/dev/null 2>&1 && gdf=--group-directories

$ls --no-group -d . >/dev/null 2>&1 && ng=--no-group

$ls --quoting=shell-escape -d . >/dev/null 2>&1 && quote=--quoting=shell-escape

# Bypass long format manipulation if any of following formats are specified

# FIXME: Matching options like this is a bit brittle

lfmt=lfmt

echo "$*" | $egrep -- "-(m|i|x|s|C|-version|-help)" >/dev/null && lfmt=""

# set -o pipefail is bash/ksh/zsh specific

# So manually propagate the exit status from ls.

# See http://stackoverflow.com/a/30658405/4421

exec 4>&1

ls_status=`{ {

# Start with the standard long format listing

# with colours, and latest files at bottom

$ls -lrtq $color_opt$color_when $ng $gdf $quote "$@";

printf $? 1>&3; } |

# process with sed to...

sed "

# Remove total line(s) I never use

/$total [0-9,. ]\{1,\}$/d

# prettify symlink arrows

s/ -> / $BLD$SYM_ARROW$RST /

# Conditionally process long format output

b $lfmt

:lfmt

# Ignore directory name headings

/^[^ ]\{1,\}:$/b

# temporarily shrink any prepended reset codes

# from older ls' to a single char

s/^$ESC\[0*m/0/

# highlight ug+s indicators

s/^\(0\{0,1\}.\{3\}\)\([sS]\)/\1$HLI\2$RST/

s/^\(0\{0,1\}.\{6\}\)\([sS]\)/\1$HLI\2$RST/

# highlight +t o+w indicators for directories

/^0\{0,1\}d/!b not_dir

s/^\(0\{0,1\}.\{9\}\)\([tT]\)/\1$HLI\2$RST/

s/^\(0\{0,1\}.\{8\}\)w/\1${HLI}w$RST/

s/^\(0\{0,1\}.\{3\}\)\([sS]\)/\1$HLI\2$RST/

s/^\(0\{0,1\}.\{6\}\)\([sS]\)/\1$HLI\2$RST/

:not_dir

# highlight multiply linked files

/^0\{0,1\}[^d]\{10,\}/!b not_hl

/^[^ ]* *1 /b not_hl

s/^\(0\{0,1\}[^ ]*\)\( *\)\([0-9]\{1,\}\)/\1\2$HLI\3$RST/

:not_hl

# restore any reset codes replaced above

s/^0/${ESC}[0m/

" 1>&4; } 3>&1`

sed_status=$?

# Note if sed fails, then if ls outputs it will usually get

# a SIGPIPE and exit with status 141. Though that's dependent

# on ls(1) propagating that "error", and also will not be the case

# if ls does not output after sed terminates. So factor both

# exit values into the final exit status.

test $ls_status != 0 && exit $ls_status || exit $sed_status