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#!/usr/bin/env bash
# Copyright © Tavian Barnes <tavianator@tavianator.com>
# SPDX-License-Identifier: 0BSD
# Prints the "ground truth" coloring of a path using ls
set -e
parse_ls_colors() {
for key; do
local -n var="$key"
if [[ "$LS_COLORS" =~ (^|:)$key=(([^:]|\\:)*) ]]; then
var="${BASH_REMATCH[2]}"
# Interpret escapes
var=$(printf "$var" | sed $'s/\^\[/\033/g; s/\\\\:/:/g')
fi
done
}
re_escape() {
# https://stackoverflow.com/a/29613573/502399
sed 's/[^^]/[&]/g; s/\^/\\^/g' <<<"$1"
}
rs=0
lc=$'\033['
rc=m
ec=
no=
parse_ls_colors rs lc rc ec no
: "${ec:=$lc$rs$rc}"
strip="(($(re_escape "$lc$no$rc"))?($(re_escape "$ec")|$(re_escape "$lc$rc")))+"
ls_color() {
# Strip the leading reset sequence from the ls output
ls -1d --color "$@" | sed -E "s/^$strip([a-z].*)$strip/\4/; s/^$strip//"
}
L=
if [ "$1" = "-L" ]; then
L="$1"
shift
fi
DIR="${1%/*}"
if [ "$DIR" = "$1" ]; then
ls_color "$1"
exit
fi
BASE="${1##*/}"
ls_color $L "$DIR/" | tr -d '\n'
if [ -e "$1" ]; then
(cd "$DIR" && ls_color $L "$BASE")
else
(cd "$DIR" && ls_color "$BASE")
fi
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