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Move away from oh-my-zsh
author zegervdv <zegervdv@me.com>
date Mon, 20 Oct 2014 21:49:21 +0200
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150:de8d4246c8fe 151:87498dbd779a
1 # Copyright (c) 2009 rupa deadwyler under the WTFPL license
2
3 # maintains a jump-list of the directories you actually use
4 #
5 # INSTALL:
6 # * put something like this in your .bashrc/.zshrc:
7 # . /path/to/z.sh
8 # * cd around for a while to build up the db
9 # * PROFIT!!
10 # * optionally:
11 # set $_Z_CMD in .bashrc/.zshrc to change the command (default z).
12 # set $_Z_DATA in .bashrc/.zshrc to change the datafile (default ~/.z).
13 # set $_Z_NO_RESOLVE_SYMLINKS to prevent symlink resolution.
14 # set $_Z_NO_PROMPT_COMMAND if you're handling PROMPT_COMMAND yourself.
15 # set $_Z_EXCLUDE_DIRS to an array of directories to exclude.
16 # set $_Z_OWNER to your username if you want use z while sudo with $HOME kept
17 #
18 # USE:
19 # * z foo # cd to most frecent dir matching foo
20 # * z foo bar # cd to most frecent dir matching foo and bar
21 # * z -r foo # cd to highest ranked dir matching foo
22 # * z -t foo # cd to most recently accessed dir matching foo
23 # * z -l foo # list matches instead of cd
24 # * z -c foo # restrict matches to subdirs of $PWD
25
26 [ -d "${_Z_DATA:-$HOME/.z}" ] && {
27 echo "ERROR: z.sh's datafile (${_Z_DATA:-$HOME/.z}) is a directory."
28 }
29
30 _z() {
31
32 local datafile="${_Z_DATA:-$HOME/.z}"
33
34 # bail if we don't own ~/.z and $_Z_OWNER not set
35 [ -z "$_Z_OWNER" -a -f "$datafile" -a ! -O "$datafile" ] && return
36
37 # add entries
38 if [ "$1" = "--add" ]; then
39 shift
40
41 # $HOME isn't worth matching
42 [ "$*" = "$HOME" ] && return
43
44 # don't track excluded dirs
45 local exclude
46 for exclude in "${_Z_EXCLUDE_DIRS[@]}"; do
47 [ "$*" = "$exclude" ] && return
48 done
49
50 # maintain the data file
51 local tempfile="$datafile.$RANDOM"
52 while read line; do
53 # only count directories
54 [ -d "${line%%\|*}" ] && echo $line
55 done < "$datafile" | awk -v path="$*" -v now="$(date +%s)" -F"|" '
56 BEGIN {
57 rank[path] = 1
58 time[path] = now
59 }
60 $2 >= 1 {
61 # drop ranks below 1
62 if( $1 == path ) {
63 rank[$1] = $2 + 1
64 time[$1] = now
65 } else {
66 rank[$1] = $2
67 time[$1] = $3
68 }
69 count += $2
70 }
71 END {
72 if( count > 9000 ) {
73 # aging
74 for( x in rank ) print x "|" 0.99*rank[x] "|" time[x]
75 } else for( x in rank ) print x "|" rank[x] "|" time[x]
76 }
77 ' 2>/dev/null >| "$tempfile"
78 # do our best to avoid clobbering the datafile in a race condition
79 if [ $? -ne 0 -a -f "$datafile" ]; then
80 env rm -f "$tempfile"
81 else
82 [ "$_Z_OWNER" ] && chown $_Z_OWNER:$(id -ng $_Z_OWNER) "$tempfile"
83 env mv -f "$tempfile" "$datafile" || env rm -f "$tempfile"
84 fi
85
86 # tab completion
87 elif [ "$1" = "--complete" -a -s "$datafile" ]; then
88 while read line; do
89 [ -d "${line%%\|*}" ] && echo $line
90 done < "$datafile" | awk -v q="$2" -F"|" '
91 BEGIN {
92 if( q == tolower(q) ) imatch = 1
93 q = substr(q, 3)
94 gsub(" ", ".*", q)
95 }
96 {
97 if( imatch ) {
98 if( tolower($1) ~ tolower(q) ) print $1
99 } else if( $1 ~ q ) print $1
100 }
101 ' 2>/dev/null
102
103 else
104 # list/go
105 while [ "$1" ]; do case "$1" in
106 --) while [ "$1" ]; do shift; local fnd="$fnd${fnd:+ }$1";done;;
107 -*) local opt=${1:1}; while [ "$opt" ]; do case ${opt:0:1} in
108 c) local fnd="^$PWD $fnd";;
109 h) echo "${_Z_CMD:-z} [-chlrtx] args" >&2; return;;
110 x) sed -i -e "\:^${PWD}|.*:d" "$datafile";;
111 l) local list=1;;
112 r) local typ="rank";;
113 t) local typ="recent";;
114 esac; opt=${opt:1}; done;;
115 *) local fnd="$fnd${fnd:+ }$1";;
116 esac; local last=$1; shift; done
117 [ "$fnd" -a "$fnd" != "^$PWD " ] || local list=1
118
119 # if we hit enter on a completion just go there
120 case "$last" in
121 # completions will always start with /
122 /*) [ -z "$list" -a -d "$last" ] && cd "$last" && return;;
123 esac
124
125 # no file yet
126 [ -f "$datafile" ] || return
127
128 local cd
129 cd="$(while read line; do
130 [ -d "${line%%\|*}" ] && echo $line
131 done < "$datafile" | awk -v t="$(date +%s)" -v list="$list" -v typ="$typ" -v q="$fnd" -F"|" '
132 function frecent(rank, time) {
133 # relate frequency and time
134 dx = t - time
135 if( dx < 3600 ) return rank * 4
136 if( dx < 86400 ) return rank * 2
137 if( dx < 604800 ) return rank / 2
138 return rank / 4
139 }
140 function output(files, out, common) {
141 # list or return the desired directory
142 if( list ) {
143 cmd = "sort -n >&2"
144 for( x in files ) {
145 if( files[x] ) printf "%-10s %s\n", files[x], x | cmd
146 }
147 if( common ) {
148 printf "%-10s %s\n", "common:", common > "/dev/stderr"
149 }
150 } else {
151 if( common ) out = common
152 print out
153 }
154 }
155 function common(matches) {
156 # find the common root of a list of matches, if it exists
157 for( x in matches ) {
158 if( matches[x] && (!short || length(x) < length(short)) ) {
159 short = x
160 }
161 }
162 if( short == "/" ) return
163 # use a copy to escape special characters, as we want to return
164 # the original. yeah, this escaping is awful.
165 clean_short = short
166 gsub(/[\(\)\[\]\|]/, "\\\\&", clean_short)
167 for( x in matches ) if( matches[x] && x !~ clean_short ) return
168 return short
169 }
170 BEGIN {
171 gsub(" ", ".*", q)
172 hi_rank = ihi_rank = -9999999999
173 }
174 {
175 if( typ == "rank" ) {
176 rank = $2
177 } else if( typ == "recent" ) {
178 rank = $3 - t
179 } else rank = frecent($2, $3)
180 if( $1 ~ q ) {
181 matches[$1] = rank
182 } else if( tolower($1) ~ tolower(q) ) imatches[$1] = rank
183 if( matches[$1] && matches[$1] > hi_rank ) {
184 best_match = $1
185 hi_rank = matches[$1]
186 } else if( imatches[$1] && imatches[$1] > ihi_rank ) {
187 ibest_match = $1
188 ihi_rank = imatches[$1]
189 }
190 }
191 END {
192 # prefer case sensitive
193 if( best_match ) {
194 output(matches, best_match, common(matches))
195 } else if( ibest_match ) {
196 output(imatches, ibest_match, common(imatches))
197 }
198 }
199 ')"
200 [ $? -gt 0 ] && return
201 [ "$cd" ] && cd "$cd"
202 fi
203 }
204
205 alias ${_Z_CMD:-z}='_z 2>&1'
206
207 [ "$_Z_NO_RESOLVE_SYMLINKS" ] || _Z_RESOLVE_SYMLINKS="-P"
208
209 if compctl >/dev/null 2>&1; then
210 # zsh
211 [ "$_Z_NO_PROMPT_COMMAND" ] || {
212 # populate directory list, avoid clobbering any other precmds.
213 if [ "$_Z_NO_RESOLVE_SYMLINKS" ]; then
214 _z_precmd() {
215 _z --add "${PWD:a}"
216 }
217 else
218 _z_precmd() {
219 _z --add "${PWD:A}"
220 }
221 fi
222 [[ -n "${precmd_functions[(r)_z_precmd]}" ]] || {
223 precmd_functions[$(($#precmd_functions+1))]=_z_precmd
224 }
225 }
226 _z_zsh_tab_completion() {
227 # tab completion
228 local compl
229 read -l compl
230 reply=(${(f)"$(_z --complete "$compl")"})
231 }
232 compctl -U -K _z_zsh_tab_completion _z
233 elif complete >/dev/null 2>&1; then
234 # bash
235 # tab completion
236 complete -o filenames -C '_z --complete "$COMP_LINE"' ${_Z_CMD:-z}
237 [ "$_Z_NO_PROMPT_COMMAND" ] || {
238 # populate directory list. avoid clobbering other PROMPT_COMMANDs.
239 grep "_z --add" <<< "$PROMPT_COMMAND" >/dev/null || {
240 PROMPT_COMMAND="$PROMPT_COMMAND"$'\n''_z --add "$(command pwd '$_Z_RESOLVE_SYMLINKS' 2>/dev/null)" 2>/dev/null;'
241 }
242 }
243 fi