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|
# License at bottom.
# Initialize cdlog the first time.
c1=${c1-}
if [ -z "$c1" ] ; then
c9=; c8=; c7=
c6=; c5=; c4=
c3=; c2=
fi
# One-letter nicknames for most recent four dirs.
cdlog.nicks()
{
x=$c1
y=$c2
z=$c3
w=$c4
}
# Set state from args
cdlog.args()
{
c1=$1; c2=$2; c3=$3
c4=$4; c5=$5; c6=$6
c7=$7; c8=$8; c9=$8
cdlog.nicks
}
# Change to directory: this is aliased to cd command.
cdlog.chdir()
{
local cur=$PWD
if command cd "$@" && [ "$PWD" != "$cur" ]; then
# only if we successfully change to a different
# directory do the following
c9=$c8; c8=$c7; c7=$c6
c6=$c5; c5=$c4; c4=$c3
c3=$c2; c2=$c1
c1=$cur
cdlog.nicks
fi
}
# Rotate through specified directories.
cdlog.rot()
{
local cur=$PWD
local p=$cur
local n=$cur
local d=("" "$c1" "$c2" "$c3" "$c4" "$c5" "$c6" "$c7" "$c8" "$c9")
local first=y
unset d[0]
[ $# -gt 0 ] || set 1
while [ $# -gt 0 ] ; do
n=$1; shift
case $n in
( [1-9] )
if [ $first ] ; then
command cd "${d[$n]}" || return
printf "%s\n" "$PWD"
else
d[$p]=${d[$n]}
fi
first=
p=$n
;;
( * )
printf "cdlog.rot: bad argument: %s\n" "$n"
return 1
;;
esac
done
d[$p]=$cur
cdlog.args "${d[@]}"
}
# Change to most recent diretory in cdlog and remove it
# from the log.
cdlog.pop()
{
if [ -n "$c1" ] && command cd "$c1"; then
c1=$c2; c2=$c3; c3=$c4
c4=$c5; c5=$c6; c6=$c7
c7=$c8; c8=$c9;
c9=
cdlog.nicks
printf "%s\n" "$PWD"
fi
}
# Print four recent cdlog entries.
cdlog()
{
# c5 through c9 are "hidden"
printf "1: %s\n" "$c1"
printf "2: %s\n" "$c2"
printf "3: %s\n" "$c3"
printf "4: %s\n" "$c4"
}
# Menu-based cd/cs.
cdlog.mcd()
{
local sel=
local swap=
local res=1
local d=("" "$c1" "$c2" "$c3" "$c4" "$c5" "$c6" "$c7" "$c8" "$c9")
if [ $# -gt 0 ] && [ "$1" = -s ] ; then
swap=y
fi
for x in {1..9}; do
printf "%s: %s\n" $x "${d[$x]}"
done
read -p "? " sel
printf "\e[10A\e[J"
case "$sel" in
( [1-9] )
if [ $swap ] ; then
cdlog.rot $sel
else
if cdlog.chdir -P "${d[$sel]}" ; then
printf "%s\n" "$PWD"
fi
fi
res=$?
;;
esac
return $res
}
# Aliases.
alias cd='cdlog.chdir -P'
alias pd='cdlog.pop'
alias cs='cdlog.rot'
alias cl='cdlog'
alias mcd='cdlog.mcd'
alias mcs='cdlog.mcd -s'
# Better completion for $x[Tab]
shopt -s direxpand
# Copyright 2024
# Kaz Kylheku <kaz@kylheku.com>
# Vancouver, Canada
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following condition is met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form need not reproduce any copyright notice.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
