mirror of
https://github.com/ohmyzsh/ohmyzsh.git
synced 2024-11-14 18:00:08 +00:00
390 lines
11 KiB
Bash
390 lines
11 KiB
Bash
#!/bin/zsh -f
|
|
|
|
emulate -L zsh
|
|
local EXIT=return
|
|
if [[ $(whence -w $0) == *:' 'command ]]; then
|
|
emulate -R zsh
|
|
local RUNNING_AS_COMMAND=1
|
|
EXIT=exit
|
|
fi
|
|
|
|
local DOC='scd -- smart change to a recently used directory
|
|
usage: scd [options] [pattern1 pattern2 ...]
|
|
Go to a directory path that contains all fixed string patterns. Prefer
|
|
recent or frequently visited directories as found in the directory index.
|
|
Display a selection menu in case of multiple matches.
|
|
|
|
Options:
|
|
-a, --add add specified directories to the directory index.
|
|
--unindex remove current or specified directories from the index.
|
|
-r, --recursive apply options --add or --unindex recursively.
|
|
--alias=ALIAS create alias for the current or specified directory and
|
|
store it in ~/.scdalias.zsh.
|
|
--unalias remove ALIAS definition for the current or specified
|
|
directory from ~/.scdalias.zsh.
|
|
-A, --all include all matching directories. Disregard matching by
|
|
directory alias and filtering of less likely paths.
|
|
--list show matching directories and exit.
|
|
-v, --verbose display directory rank in the selection menu.
|
|
-h, --help display this message and exit.
|
|
'
|
|
|
|
local SCD_HISTFILE=${SCD_HISTFILE:-${HOME}/.scdhistory}
|
|
local SCD_HISTSIZE=${SCD_HISTSIZE:-5000}
|
|
local SCD_MENUSIZE=${SCD_MENUSIZE:-20}
|
|
local SCD_MEANLIFE=${SCD_MEANLIFE:-86400}
|
|
local SCD_THRESHOLD=${SCD_THRESHOLD:-0.005}
|
|
local SCD_SCRIPT=${RUNNING_AS_COMMAND:+$SCD_SCRIPT}
|
|
local SCD_ALIAS=~/.scdalias.zsh
|
|
|
|
local ICASE a d m p i maxrank threshold
|
|
local opt_help opt_add opt_unindex opt_recursive opt_verbose
|
|
local opt_alias opt_unalias opt_all opt_list
|
|
local -A drank dalias
|
|
local dmatching
|
|
local last_directory
|
|
|
|
setopt extendedhistory extendedglob noautonamedirs brace_ccl
|
|
|
|
# If SCD_SCRIPT is defined make sure the file exists and is empty.
|
|
# This removes any previous old commands.
|
|
[[ -n "$SCD_SCRIPT" ]] && [[ -s $SCD_SCRIPT || ! -f $SCD_SCRIPT ]] && (
|
|
umask 077
|
|
: >| $SCD_SCRIPT
|
|
)
|
|
|
|
# process command line options
|
|
zmodload -i zsh/zutil
|
|
zmodload -i zsh/datetime
|
|
zparseopts -D -- a=opt_add -add=opt_add -unindex=opt_unindex \
|
|
r=opt_recursive -recursive=opt_recursive \
|
|
-alias:=opt_alias -unalias=opt_unalias \
|
|
A=opt_all -all=opt_all -list=opt_list \
|
|
v=opt_verbose -verbose=opt_verbose h=opt_help -help=opt_help \
|
|
|| $EXIT $?
|
|
|
|
if [[ -n $opt_help ]]; then
|
|
print $DOC
|
|
$EXIT
|
|
fi
|
|
|
|
# load directory aliases if they exist
|
|
[[ -r $SCD_ALIAS ]] && source $SCD_ALIAS
|
|
|
|
# Private internal functions are prefixed with _scd_Y19oug_.
|
|
# Clean them up when the scd function returns.
|
|
setopt localtraps
|
|
trap 'unfunction -m "_scd_Y19oug_*"' EXIT
|
|
|
|
# works faster than the (:a) modifier and is compatible with zsh 4.2.6
|
|
_scd_Y19oug_abspath() {
|
|
set -A $1 ${(ps:\0:)"$(
|
|
unfunction -m "*"; shift
|
|
for d; do
|
|
cd $d && print -Nr -- $PWD && cd $OLDPWD
|
|
done
|
|
)"}
|
|
}
|
|
|
|
# define directory alias
|
|
if [[ -n $opt_alias ]]; then
|
|
if [[ -n $1 && ! -d $1 ]]; then
|
|
print -u2 "'$1' is not a directory."
|
|
$EXIT 1
|
|
fi
|
|
a=${opt_alias[-1]#=}
|
|
_scd_Y19oug_abspath d ${1:-$PWD}
|
|
# alias in the current shell, update alias file if successful
|
|
hash -d -- $a=$d &&
|
|
(
|
|
umask 077
|
|
hash -dr
|
|
[[ -r $SCD_ALIAS ]] && source $SCD_ALIAS
|
|
hash -d -- $a=$d
|
|
hash -dL >| $SCD_ALIAS
|
|
)
|
|
$EXIT $?
|
|
fi
|
|
|
|
# undefine directory alias
|
|
if [[ -n $opt_unalias ]]; then
|
|
if [[ -n $1 && ! -d $1 ]]; then
|
|
print -u2 "'$1' is not a directory."
|
|
$EXIT 1
|
|
fi
|
|
_scd_Y19oug_abspath a ${1:-$PWD}
|
|
a=$(print -rD ${a})
|
|
if [[ $a != [~][^/]## ]]; then
|
|
$EXIT
|
|
fi
|
|
a=${a#[~]}
|
|
# unalias in the current shell, update alias file if successful
|
|
if unhash -d -- $a 2>/dev/null && [[ -r $SCD_ALIAS ]]; then
|
|
(
|
|
umask 077
|
|
hash -dr
|
|
source $SCD_ALIAS
|
|
unhash -d -- $a 2>/dev/null &&
|
|
hash -dL >| $SCD_ALIAS
|
|
)
|
|
fi
|
|
$EXIT $?
|
|
fi
|
|
|
|
# The "compress" function collapses repeated directories to
|
|
# one entry with a time stamp that gives equivalent-probability.
|
|
_scd_Y19oug_compress() {
|
|
awk -v epochseconds=$EPOCHSECONDS -v meanlife=$SCD_MEANLIFE '
|
|
BEGIN { FS = "[:;]"; }
|
|
length($0) < 4096 && $2 > 0 {
|
|
tau = 1.0 * ($2 - epochseconds) / meanlife;
|
|
if (tau < -6.9078) tau = -6.9078;
|
|
prob = exp(tau);
|
|
sub(/^[^;]*;/, "");
|
|
if (NF) {
|
|
dlist[last[$0]] = "";
|
|
dlist[NR] = $0;
|
|
last[$0] = NR;
|
|
ptot[$0] += prob;
|
|
}
|
|
}
|
|
END {
|
|
for (i = 1; i <= NR; ++i) {
|
|
d = dlist[i];
|
|
if (d) {
|
|
ts = log(ptot[d]) * meanlife + epochseconds;
|
|
printf(": %.0f:0;%s\n", ts, d);
|
|
}
|
|
}
|
|
}
|
|
' $*
|
|
}
|
|
|
|
# Rewrite directory index if it is at least 20% oversized
|
|
if [[ -s $SCD_HISTFILE ]] && \
|
|
(( $(wc -l <$SCD_HISTFILE) > 1.2 * $SCD_HISTSIZE )); then
|
|
# compress repeated entries
|
|
m=( ${(f)"$(_scd_Y19oug_compress $SCD_HISTFILE)"} )
|
|
# purge non-existent directories
|
|
m=( ${(f)"$(
|
|
for a in $m; do
|
|
if [[ -d ${a#*;} ]]; then print -r -- $a; fi
|
|
done
|
|
)"}
|
|
)
|
|
# cut old entries if still oversized
|
|
if [[ $#m -gt $SCD_HISTSIZE ]]; then
|
|
m=( ${m[-$SCD_HISTSIZE,-1]} )
|
|
fi
|
|
print -lr -- $m >| ${SCD_HISTFILE}
|
|
fi
|
|
|
|
# Determine the last recorded directory
|
|
if [[ -s ${SCD_HISTFILE} ]]; then
|
|
last_directory=${"$(tail -1 ${SCD_HISTFILE})"#*;}
|
|
fi
|
|
|
|
# The "record" function adds its arguments to the directory index.
|
|
_scd_Y19oug_record() {
|
|
while [[ -n $last_directory && $1 == $last_directory ]]; do
|
|
shift
|
|
done
|
|
if [[ $# -gt 0 ]]; then
|
|
( umask 077
|
|
p=": ${EPOCHSECONDS}:0;"
|
|
print -lr -- ${p}${^*} >>| $SCD_HISTFILE )
|
|
fi
|
|
}
|
|
|
|
if [[ -n $opt_add ]]; then
|
|
for d; do
|
|
if [[ ! -d $d ]]; then
|
|
print -u2 "Directory '$d' does not exist."
|
|
$EXIT 2
|
|
fi
|
|
done
|
|
_scd_Y19oug_abspath m ${*:-$PWD}
|
|
_scd_Y19oug_record $m
|
|
if [[ -n $opt_recursive ]]; then
|
|
for d in $m; do
|
|
print -n "scanning ${d} ... "
|
|
_scd_Y19oug_record ${d}/**/*(-/N)
|
|
print "[done]"
|
|
done
|
|
fi
|
|
$EXIT
|
|
fi
|
|
|
|
# take care of removing entries from the directory index
|
|
if [[ -n $opt_unindex ]]; then
|
|
if [[ ! -s $SCD_HISTFILE ]]; then
|
|
$EXIT
|
|
fi
|
|
# expand existing directories in the argument list
|
|
for i in {1..$#}; do
|
|
if [[ -d ${argv[i]} ]]; then
|
|
_scd_Y19oug_abspath d ${argv[i]}
|
|
argv[i]=${d}
|
|
fi
|
|
done
|
|
m="$(awk -v recursive=${opt_recursive} '
|
|
BEGIN {
|
|
for (i = 2; i < ARGC; ++i) {
|
|
argset[ARGV[i]] = 1;
|
|
delete ARGV[i];
|
|
}
|
|
}
|
|
1 {
|
|
d = $0; sub(/^[^;]*;/, "", d);
|
|
if (d in argset) next;
|
|
}
|
|
recursive {
|
|
for (a in argset) {
|
|
if (substr(d, 1, length(a) + 1) == a"/") next;
|
|
}
|
|
}
|
|
{ print $0 }
|
|
' $SCD_HISTFILE ${*:-$PWD} )" || $EXIT $?
|
|
: >| ${SCD_HISTFILE}
|
|
[[ ${#m} == 0 ]] || print -r -- $m >> ${SCD_HISTFILE}
|
|
$EXIT
|
|
fi
|
|
|
|
# The "action" function is called when there is just one target directory.
|
|
_scd_Y19oug_action() {
|
|
cd $1 || return $?
|
|
if [[ -z $SCD_SCRIPT && -n $RUNNING_AS_COMMAND ]]; then
|
|
print -u2 "Warning: running as command with SCD_SCRIPT undefined."
|
|
fi
|
|
if [[ -n $SCD_SCRIPT ]]; then
|
|
print -r "cd ${(q)1}" >| $SCD_SCRIPT
|
|
fi
|
|
}
|
|
|
|
# Match and rank patterns to the index file
|
|
# set global arrays dmatching and drank
|
|
_scd_Y19oug_match() {
|
|
## single argument that is an existing directory or directory alias
|
|
if [[ -z $opt_all && $# == 1 ]] && \
|
|
[[ -d ${d::=$1} || -d ${d::=${nameddirs[$1]}} ]] && [[ -x $d ]];
|
|
then
|
|
_scd_Y19oug_abspath dmatching $d
|
|
drank[${dmatching[1]}]=1
|
|
return
|
|
fi
|
|
|
|
# ignore case unless there is an argument with an uppercase letter
|
|
[[ "$*" == *[[:upper:]]* ]] || ICASE='(#i)'
|
|
# support "$" as an anchor for the directory name ending
|
|
argv=( ${argv/(#m)?[$](#e)/${MATCH[1]}(#e)} )
|
|
|
|
# calculate rank of all directories in the SCD_HISTFILE and keep it as drank
|
|
# include a dummy entry for splitting of an empty string is buggy
|
|
[[ -s $SCD_HISTFILE ]] && drank=( ${(f)"$(
|
|
print -l /dev/null -10
|
|
<$SCD_HISTFILE \
|
|
awk -v epochseconds=$EPOCHSECONDS -v meanlife=$SCD_MEANLIFE '
|
|
BEGIN { FS = "[:;]"; }
|
|
length($0) < 4096 && $2 > 0 {
|
|
tau = 1.0 * ($2 - epochseconds) / meanlife;
|
|
if (tau < -6.9078) tau = -6.9078;
|
|
prob = exp(tau);
|
|
sub(/^[^;]*;/, "");
|
|
if (NF) ptot[$0] += prob;
|
|
}
|
|
END { for (di in ptot) { print di; print ptot[di]; } }'
|
|
)"}
|
|
)
|
|
unset "drank[/dev/null]"
|
|
|
|
# filter drank to the entries that match all arguments
|
|
for a; do
|
|
p=${ICASE}"*(${a})*"
|
|
drank=( ${(kv)drank[(I)${~p}]} )
|
|
done
|
|
# require at least one argument matches the directory name
|
|
p=${ICASE}"*(${(j:|:)argv})[^/]#"
|
|
drank=( ${(kv)drank[(I)${~p}]} )
|
|
|
|
# build a list of matching directories reverse-sorted by their probabilities
|
|
dmatching=( ${(f)"$(
|
|
for d p in ${(kv)drank}; do
|
|
print -r -- "$p $d";
|
|
done | sort -grk1 | cut -d ' ' -f 2-
|
|
)"}
|
|
)
|
|
|
|
# do not match $HOME or $PWD when run without arguments
|
|
if [[ $# == 0 ]]; then
|
|
dmatching=( ${dmatching:#(${HOME}|${PWD})} )
|
|
fi
|
|
|
|
# keep at most SCD_MENUSIZE of matching and valid directories
|
|
m=( )
|
|
for d in $dmatching; do
|
|
[[ ${#m} == $SCD_MENUSIZE ]] && break
|
|
[[ -d $d && -x $d ]] && m+=$d
|
|
done
|
|
dmatching=( $m )
|
|
|
|
# find the maximum rank
|
|
maxrank=0.0
|
|
for d in $dmatching; do
|
|
[[ ${drank[$d]} -lt maxrank ]] || maxrank=${drank[$d]}
|
|
done
|
|
|
|
# discard all directories below the rank threshold
|
|
threshold=$(( maxrank * SCD_THRESHOLD ))
|
|
if [[ -n ${opt_all} ]]; then
|
|
threshold=0
|
|
fi
|
|
dmatching=( ${^dmatching}(Ne:'(( ${drank[$REPLY]} >= threshold ))':) )
|
|
}
|
|
|
|
_scd_Y19oug_match $*
|
|
|
|
## process whatever directories that remained
|
|
if [[ ${#dmatching} == 0 ]]; then
|
|
print -u2 "No matching directory."
|
|
$EXIT 1
|
|
fi
|
|
|
|
## build formatted directory aliases for selection menu or list display
|
|
for d in $dmatching; do
|
|
if [[ -n ${opt_verbose} ]]; then
|
|
dalias[$d]=$(printf "%.3g %s" ${drank[$d]} $d)
|
|
else
|
|
dalias[$d]=$(print -Dr -- $d)
|
|
fi
|
|
done
|
|
|
|
## process the --list option
|
|
if [[ -n $opt_list ]]; then
|
|
for d in $dmatching; do
|
|
print -r -- "# ${dalias[$d]}"
|
|
print -r -- $d
|
|
done
|
|
$EXIT
|
|
fi
|
|
|
|
## process single directory match
|
|
if [[ ${#dmatching} == 1 ]]; then
|
|
_scd_Y19oug_action $dmatching
|
|
$EXIT $?
|
|
fi
|
|
|
|
## here we have multiple matches - display selection menu
|
|
a=( {a-z} {A-Z} )
|
|
a=( ${a[1,${#dmatching}]} )
|
|
p=( )
|
|
for i in {1..${#dmatching}}; do
|
|
[[ -n ${a[i]} ]] || break
|
|
p+="${a[i]}) ${dalias[${dmatching[i]}]}"
|
|
done
|
|
|
|
print -c -r -- $p
|
|
|
|
if read -s -k 1 d && [[ ${i::=${a[(I)$d]}} -gt 0 ]]; then
|
|
_scd_Y19oug_action ${dmatching[i]}
|
|
$EXIT $?
|
|
fi
|