diff options
| -rw-r--r-- | cdlog.sh | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/cdlog.sh b/cdlog.sh new file mode 100644 index 0000000..5e53e4b --- /dev/null +++ b/cdlog.sh @@ -0,0 +1,114 @@ +# License at bottom. + +# Initialize cdlog the first time. +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=$c4 +} + +# Change to directory: this is aliased to cd command. +cdlog_chdir() +{ + local cur=$PWD + + if command cd "$@" && [ "$PWD" != "$cur" ]; then + # only if we successfully change to a different + # directory do the following + + if [ "$cur" == "$c2" ] && [ "$PWD" == "$c1" ] ; then + # Special case: if we changed to the directory that is second + # in the cdlog, then just swap between those two. + c2=$PWD + c1=$cur + else + # Otherwise rotate through all + c9=$c8 + c8=$c7 + c7=$c6 + c6=$c5 + c5=$c4 + c4=$c3 + c3=$c2 + c2=$c1 + c1=$cur + fi + + cdlog_nicks + fi +} + +# 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 + fi +} + +# Print four recen cdlog entries. +cdlog() +{ + # c5 through c9 are "hidden" + printf "c1/x: %s\n" "$c1" + printf "c2/y: %s\n" "$c2" + printf "c3/z: %s\n" "$c3" + printf "c4/w: %s\n" "$c4" +} + +# Aliases. +alias cs='cdlog_chdir "$c1"' +alias cd='cdlog_chdir -P' +alias pd='cdlog_pop' + +# 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. |