Update to the upstream smart-change-directory.
Synced with the master branch pavoljuhas/smart-change-directory@20b5a80cf0.
This commit is contained in:
Pavol Juhas
parent
7f07facf41
commit
b6012bc2c3
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@ -11,12 +11,9 @@ the index. A selection menu is displayed in case of several matches, with a
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preference given to recently visited paths. `scd` can create permanent
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directory aliases, which appear as named directories in zsh session.
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## INSTALLATION
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## INSTALLATION NOTES
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For oh-my-zsh, add `scd` to the `plugins` array in the ~/.zshrc file as in the
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[template file](../../templates/zshrc.zsh-template#L45).
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Besides zsh, `scd` can be used with *bash*, *dash* or *tcsh*
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Besides oh-my-zsh, `scd` can be used with *bash*, *dash* or *tcsh*
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shells and is also available as [Vim](http://www.vim.org/) plugin and
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[IPython](http://ipython.org/) extension. For installation details, see
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https://github.com/pavoljuhas/smart-change-directory.
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@ -34,7 +31,7 @@ scd [options] [pattern1 pattern2 ...]
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add specified directories to the directory index.</dd><dt>
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--unindex</dt><dd>
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remove specified directories from the index.</dd><dt>
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remove current or specified directories from the index.</dd><dt>
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-r, --recursive</dt><dd>
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apply options <em>--add</em> or <em>--unindex</em> recursively.</dd><dt>
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@ -47,6 +44,10 @@ scd [options] [pattern1 pattern2 ...]
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remove ALIAS definition for the current or specified directory from
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<em>~/.scdalias.zsh</em>.</dd><dt>
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-A, --all</dt><dd>
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include all matching directories. Disregard matching by directory
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alias and filtering of less likely paths.</dd><dt>
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--list</dt><dd>
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show matching directories and exit.</dd><dt>
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@ -70,7 +71,7 @@ scd doc
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scd a b c
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# Change to a directory path that ends with "ts"
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scd "ts(#e)"
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scd "ts$"
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# Show selection menu and ranking of 20 most likely directories
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scd -v
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119
plugins/scd/scd
119
plugins/scd/scd
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@ -11,20 +11,22 @@ fi
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local DOC='scd -- smart change to a recently used directory
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usage: scd [options] [pattern1 pattern2 ...]
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Go to a directory path that contains all fixed string patterns. Prefer
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recently visited directories and directories with patterns in their tail
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component. Display a selection menu in case of multiple matches.
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recent or frequently visited directories as found in the directory index.
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Display a selection menu in case of multiple matches.
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Options:
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-a, --add add specified directories to the directory index
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--unindex remove specified directories from the index
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-r, --recursive apply options --add or --unindex recursively
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-a, --add add specified directories to the directory index.
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--unindex remove current or specified directories from the index.
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-r, --recursive apply options --add or --unindex recursively.
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--alias=ALIAS create alias for the current or specified directory and
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store it in ~/.scdalias.zsh
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store it in ~/.scdalias.zsh.
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--unalias remove ALIAS definition for the current or specified
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directory from ~/.scdalias.zsh
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--list show matching directories and exit
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-v, --verbose display directory rank in the selection menu
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-h, --help display this message and exit
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directory from ~/.scdalias.zsh.
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-A, --all include all matching directories. Disregard matching by
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directory alias and filtering of less likely paths.
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--list show matching directories and exit.
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-v, --verbose display directory rank in the selection menu.
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-h, --help display this message and exit.
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'
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local SCD_HISTFILE=${SCD_HISTFILE:-${HOME}/.scdhistory}
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@ -35,9 +37,9 @@ local SCD_THRESHOLD=${SCD_THRESHOLD:-0.005}
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local SCD_SCRIPT=${RUNNING_AS_COMMAND:+$SCD_SCRIPT}
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local SCD_ALIAS=~/.scdalias.zsh
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local ICASE a d m p i tdir maxrank threshold
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local ICASE a d m p i maxrank threshold
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local opt_help opt_add opt_unindex opt_recursive opt_verbose
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local opt_alias opt_unalias opt_list
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local opt_alias opt_unalias opt_all opt_list
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local -A drank dalias
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local dmatching
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local last_directory
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@ -56,7 +58,8 @@ zmodload -i zsh/zutil
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zmodload -i zsh/datetime
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zparseopts -D -- a=opt_add -add=opt_add -unindex=opt_unindex \
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r=opt_recursive -recursive=opt_recursive \
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-alias:=opt_alias -unalias=opt_unalias -list=opt_list \
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-alias:=opt_alias -unalias=opt_unalias \
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A=opt_all -all=opt_all -list=opt_list \
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v=opt_verbose -verbose=opt_verbose h=opt_help -help=opt_help \
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|| $EXIT $?
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@ -68,6 +71,11 @@ fi
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# load directory aliases if they exist
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[[ -r $SCD_ALIAS ]] && source $SCD_ALIAS
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# Private internal functions are prefixed with _scd_Y19oug_.
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# Clean them up when the scd function returns.
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setopt localtraps
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trap 'unfunction -m "_scd_Y19oug_*"' EXIT
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# works faster than the (:a) modifier and is compatible with zsh 4.2.6
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_scd_Y19oug_abspath() {
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set -A $1 ${(ps:\0:)"$(
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@ -123,11 +131,52 @@ if [[ -n $opt_unalias ]]; then
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$EXIT $?
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fi
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# The "compress" function collapses repeated directories to
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# one entry with a time stamp that gives equivalent-probability.
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_scd_Y19oug_compress() {
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awk -v epochseconds=$EPOCHSECONDS -v meanlife=$SCD_MEANLIFE '
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BEGIN { FS = "[:;]"; }
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length($0) < 4096 && $2 > 0 {
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tau = 1.0 * ($2 - epochseconds) / meanlife;
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if (tau < -6.9078) tau = -6.9078;
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prob = exp(tau);
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sub(/^[^;]*;/, "");
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if (NF) {
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dlist[last[$0]] = "";
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dlist[NR] = $0;
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last[$0] = NR;
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ptot[$0] += prob;
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}
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}
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END {
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for (i = 1; i <= NR; ++i) {
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d = dlist[i];
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if (d) {
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ts = log(ptot[d]) * meanlife + epochseconds;
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printf(": %.0f:0;%s\n", ts, d);
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}
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}
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}
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' $*
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}
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# Rewrite directory index if it is at least 20% oversized
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if [[ -s $SCD_HISTFILE ]] && \
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(( $(wc -l <$SCD_HISTFILE) > 1.2 * $SCD_HISTSIZE )); then
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m=( ${(f)"$(<$SCD_HISTFILE)"} )
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print -lr -- ${m[-$SCD_HISTSIZE,-1]} >| ${SCD_HISTFILE}
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# compress repeated entries
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m=( ${(f)"$(_scd_Y19oug_compress $SCD_HISTFILE)"} )
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# purge non-existent directories
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m=( ${(f)"$(
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for a in $m; do
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if [[ -d ${a#*;} ]]; then print -r -- $a; fi
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done
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)"}
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)
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# cut old entries if still oversized
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if [[ $#m -gt $SCD_HISTSIZE ]]; then
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m=( ${m[-$SCD_HISTSIZE,-1]} )
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fi
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print -lr -- $m >| ${SCD_HISTFILE}
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fi
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# Determine the last recorded directory
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@ -135,7 +184,6 @@ if [[ -s ${SCD_HISTFILE} ]]; then
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last_directory=${"$(tail -1 ${SCD_HISTFILE})"#*;}
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fi
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# Internal functions are prefixed with "_scd_Y19oug_".
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# The "record" function adds its arguments to the directory index.
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_scd_Y19oug_record() {
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while [[ -n $last_directory && $1 == $last_directory ]]; do
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@ -217,7 +265,7 @@ _scd_Y19oug_action() {
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# set global arrays dmatching and drank
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_scd_Y19oug_match() {
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## single argument that is an existing directory or directory alias
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if [[ $# == 1 ]] && \
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if [[ -z $opt_all && $# == 1 ]] && \
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[[ -d ${d::=$1} || -d ${d::=${nameddirs[$1]}} ]] && [[ -x $d ]];
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then
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_scd_Y19oug_abspath dmatching $d
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@ -227,6 +275,8 @@ _scd_Y19oug_match() {
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# ignore case unless there is an argument with an uppercase letter
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[[ "$*" == *[[:upper:]]* ]] || ICASE='(#i)'
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# support "$" as an anchor for the directory name ending
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argv=( ${argv/(#m)?[$](#e)/${MATCH[1]}(#e)} )
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# calculate rank of all directories in the SCD_HISTFILE and keep it as drank
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# include a dummy entry for splitting of an empty string is buggy
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@ -237,10 +287,10 @@ _scd_Y19oug_match() {
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BEGIN { FS = "[:;]"; }
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length($0) < 4096 && $2 > 0 {
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tau = 1.0 * ($2 - epochseconds) / meanlife;
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if (tau < -4.61) tau = -4.61;
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prec = exp(tau);
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if (tau < -6.9078) tau = -6.9078;
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prob = exp(tau);
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sub(/^[^;]*;/, "");
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if (NF) ptot[$0] += prec;
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if (NF) ptot[$0] += prob;
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}
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END { for (di in ptot) { print di; print ptot[di]; } }'
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)"}
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@ -249,9 +299,12 @@ _scd_Y19oug_match() {
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# filter drank to the entries that match all arguments
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for a; do
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p=${ICASE}"*${a}*"
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p=${ICASE}"*(${a})*"
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drank=( ${(kv)drank[(I)${~p}]} )
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done
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# require at least one argument matches the directory name
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p=${ICASE}"*(${(j:|:)argv})[^/]#"
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drank=( ${(kv)drank[(I)${~p}]} )
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# build a list of matching directories reverse-sorted by their probabilities
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dmatching=( ${(f)"$(
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@ -261,26 +314,6 @@ _scd_Y19oug_match() {
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)"}
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)
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# if some directory paths match all patterns in order, discard all others
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p=${ICASE}"*${(j:*:)argv}*"
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m=( ${(M)dmatching:#${~p}} )
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[[ -d ${m[1]} ]] && dmatching=( $m )
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# if some directory names match last pattern, discard all others
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p=${ICASE}"*${(j:*:)argv}[^/]#"
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m=( ${(M)dmatching:#${~p}} )
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[[ -d ${m[1]} ]] && dmatching=( $m )
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# if some directory names match all patterns, discard all others
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m=( $dmatching )
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for a; do
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p=${ICASE}"*/[^/]#${a}[^/]#"
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m=( ${(M)m:#${~p}} )
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done
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[[ -d ${m[1]} ]] && dmatching=( $m )
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# if some directory names match all patterns in order, discard all others
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p=${ICASE}"/*${(j:[^/]#:)argv}[^/]#"
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m=( ${(M)dmatching:#${~p}} )
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[[ -d ${m[1]} ]] && dmatching=( $m )
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# do not match $HOME or $PWD when run without arguments
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if [[ $# == 0 ]]; then
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dmatching=( ${dmatching:#(${HOME}|${PWD})} )
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@ -302,6 +335,9 @@ _scd_Y19oug_match() {
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# discard all directories below the rank threshold
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threshold=$(( maxrank * SCD_THRESHOLD ))
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if [[ -n ${opt_all} ]]; then
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threshold=0
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fi
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dmatching=( ${^dmatching}(Ne:'(( ${drank[$REPLY]} >= threshold ))':) )
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}
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@ -339,6 +375,7 @@ fi
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## here we have multiple matches - display selection menu
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a=( {a-z} {A-Z} )
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a=( ${a[1,${#dmatching}]} )
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p=( )
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for i in {1..${#dmatching}}; do
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[[ -n ${a[i]} ]] || break
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