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132 lines
3.0 KiB
132 lines
3.0 KiB
## |
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# Navigate directory history using ALT-LEFT and ALT-RIGHT. ALT-LEFT moves back to directories |
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# that the user has changed to in the past, and ALT-RIGHT undoes ALT-LEFT. |
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# |
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dirhistory_past=($PWD) |
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dirhistory_future=() |
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export dirhistory_past |
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export dirhistory_future |
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export DIRHISTORY_SIZE=30 |
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# Pop the last element of dirhistory_past. |
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# Pass the name of the variable to return the result in. |
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# Returns the element if the array was not empty, |
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# otherwise returns empty string. |
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function pop_past() { |
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eval "$1='$dirhistory_past[$#dirhistory_past]'" |
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if [[ $#dirhistory_past -gt 0 ]]; then |
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dirhistory_past[$#dirhistory_past]=() |
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fi |
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} |
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function pop_future() { |
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eval "$1='$dirhistory_future[$#dirhistory_future]'" |
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if [[ $#dirhistory_future -gt 0 ]]; then |
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dirhistory_future[$#dirhistory_future]=() |
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fi |
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} |
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# Push a new element onto the end of dirhistory_past. If the size of the array |
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# is >= DIRHISTORY_SIZE, the array is shifted |
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function push_past() { |
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if [[ $#dirhistory_past -ge $DIRHISTORY_SIZE ]]; then |
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shift dirhistory_past |
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fi |
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if [[ $#dirhistory_past -eq 0 || $dirhistory_past[$#dirhistory_past] != "$1" ]]; then |
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dirhistory_past+=($1) |
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fi |
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} |
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function push_future() { |
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if [[ $#dirhistory_future -ge $DIRHISTORY_SIZE ]]; then |
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shift dirhistory_future |
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fi |
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if [[ $#dirhistory_future -eq 0 || $dirhistory_futuret[$#dirhistory_future] != "$1" ]]; then |
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dirhistory_future+=($1) |
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fi |
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} |
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# Called by zsh when directory changes |
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function chpwd() { |
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push_past $PWD |
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# If DIRHISTORY_CD is not set... |
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if [[ -z "${DIRHISTORY_CD+x}" ]]; then |
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# ... clear future. |
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dirhistory_future=() |
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fi |
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} |
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function dirhistory_cd(){ |
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DIRHISTORY_CD="1" |
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cd $1 |
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unset DIRHISTORY_CD |
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} |
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# Move backward in directory history |
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function dirhistory_back() { |
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local cw="" |
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local d="" |
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# Last element in dirhistory_past is the cwd. |
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pop_past cw |
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if [[ "" == "$cw" ]]; then |
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# Someone overwrote our variable. Recover it. |
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dirhistory_past=($PWD) |
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return |
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fi |
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pop_past d |
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if [[ "" != "$d" ]]; then |
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dirhistory_cd $d |
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push_future $cw |
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else |
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push_past $cw |
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fi |
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} |
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# Move forward in directory history |
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function dirhistory_forward() { |
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local d="" |
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pop_future d |
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if [[ "" != "$d" ]]; then |
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dirhistory_cd $d |
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push_past $d |
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fi |
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} |
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# Bind keys to history navigation |
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function dirhistory_zle_dirhistory_back() { |
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# Erase current line in buffer |
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zle kill-buffer |
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dirhistory_back |
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zle accept-line |
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} |
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function dirhistory_zle_dirhistory_future() { |
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# Erase current line in buffer |
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zle kill-buffer |
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dirhistory_forward |
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zle accept-line |
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} |
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zle -N dirhistory_zle_dirhistory_back |
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# xterm in normal mode |
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bindkey "\e[3D" dirhistory_zle_dirhistory_back |
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bindkey "\e[1;3D" dirhistory_zle_dirhistory_back |
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# Putty: |
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bindkey "\e\e[D" dirhistory_zle_dirhistory_back |
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# GNU screen: |
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bindkey "\eO3D" dirhistory_zle_dirhistory_back |
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zle -N dirhistory_zle_dirhistory_future |
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bindkey "\e[3C" dirhistory_zle_dirhistory_future |
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bindkey "\e[1;3C" dirhistory_zle_dirhistory_future |
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bindkey "\e\e[C" dirhistory_zle_dirhistory_future |
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bindkey "\eO3C" dirhistory_zle_dirhistory_future |
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