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156 lines
5.7 KiB
156 lines
5.7 KiB
#!/usr/bin/env zsh |
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# |
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# This is a implementation of per directory history for zsh, some |
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# implementations of which exist in bash[1,2]. It also implements |
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# a per-directory-history-toggle-history function to change from using the |
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# directory history to using the global history. In both cases the history is |
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# always saved to both the global history and the directory history, so the |
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# toggle state will not effect the saved histories. Being able to switch |
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# between global and directory histories on the fly is a novel feature as far |
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# as I am aware. |
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# |
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#------------------------------------------------------------------------------- |
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# Configuration |
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#------------------------------------------------------------------------------- |
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# |
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# HISTORY_BASE a global variable that defines the base directory in which the |
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# directory histories are stored |
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# |
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#------------------------------------------------------------------------------- |
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# History |
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#------------------------------------------------------------------------------- |
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# |
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# The idea/inspiration for a per directory history is from Stewart MacArthur[1] |
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# and Dieter[2], the implementation idea is from Bart Schaefer on the the zsh |
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# mailing list[3]. The implementation is by Jim Hester in September 2012. |
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# |
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# [1]: http://www.compbiome.com/2010/07/bash-per-directory-bash-history.html |
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# [2]: http://dieter.plaetinck.be/per_directory_bash |
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# [3]: http://www.zsh.org/mla/users/1997/msg00226.html |
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# |
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################################################################################ |
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# |
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# Copyright (c) 2014 Jim Hester |
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# |
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# This software is provided 'as-is', without any express or implied warranty. |
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# In no event will the authors be held liable for any damages arising from the |
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# use of this software. |
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# |
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# Permission is granted to anyone to use this software for any purpose, |
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# including commercial applications, and to alter it and redistribute it |
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# freely, subject to the following restrictions: |
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# |
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# 1. The origin of this software must not be misrepresented; you must not claim |
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# that you wrote the original software. If you use this software in a product, |
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# an acknowledgment in the product documentation would be appreciated but is |
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# not required. |
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# |
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# 2. Altered source versions must be plainly marked as such, and must not be |
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# misrepresented as being the original software. |
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# |
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# 3. This notice may not be removed or altered from any source distribution.. |
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# |
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################################################################################ |
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#------------------------------------------------------------------------------- |
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# configuration, the base under which the directory histories are stored |
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#------------------------------------------------------------------------------- |
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[[ -z $HISTORY_BASE ]] && HISTORY_BASE="$HOME/.directory_history" |
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[[ -z $PER_DIRECTORY_HISTORY_TOGGLE ]] && PER_DIRECTORY_HISTORY_TOGGLE='^G' |
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#------------------------------------------------------------------------------- |
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# toggle global/directory history used for searching - ctrl-G by default |
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#------------------------------------------------------------------------------- |
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function per-directory-history-toggle-history() { |
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if [[ $_per_directory_history_is_global == true ]]; then |
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_per-directory-history-set-directory-history |
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print -n "\nusing local history" |
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else |
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_per-directory-history-set-global-history |
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print -n "\nusing global history" |
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fi |
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zle .push-line |
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zle .accept-line |
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} |
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autoload per-directory-history-toggle-history |
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zle -N per-directory-history-toggle-history |
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bindkey $PER_DIRECTORY_HISTORY_TOGGLE per-directory-history-toggle-history |
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#------------------------------------------------------------------------------- |
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# implementation details |
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#------------------------------------------------------------------------------- |
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_per_directory_history_directory="$HISTORY_BASE${PWD:A}/history" |
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function _per-directory-history-change-directory() { |
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_per_directory_history_directory="$HISTORY_BASE${PWD:A}/history" |
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mkdir -p ${_per_directory_history_directory:h} |
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if [[ $_per_directory_history_is_global == false ]]; then |
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#save to the global history |
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fc -AI $HISTFILE |
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#save history to previous file |
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local prev="$HISTORY_BASE${OLDPWD:A}/history" |
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mkdir -p ${prev:h} |
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fc -AI $prev |
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#discard previous directory's history |
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local original_histsize=$HISTSIZE |
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HISTSIZE=0 |
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HISTSIZE=$original_histsize |
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#read history in new file |
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if [[ -e $_per_directory_history_directory ]]; then |
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fc -R $_per_directory_history_directory |
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fi |
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fi |
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} |
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function _per-directory-history-addhistory() { |
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# respect hist_ignore_space |
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if [[ -o hist_ignore_space ]] && [[ "$1" == \ * ]]; then |
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true |
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else |
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print -Sr -- "${1%%$'\n'}" |
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fc -p $_per_directory_history_directory |
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fi |
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} |
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function _per-directory-history-set-directory-history() { |
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if [[ $_per_directory_history_is_global == true ]]; then |
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fc -AI $HISTFILE |
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local original_histsize=$HISTSIZE |
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HISTSIZE=0 |
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HISTSIZE=$original_histsize |
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if [[ -e "$_per_directory_history_directory" ]]; then |
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fc -R "$_per_directory_history_directory" |
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fi |
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fi |
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_per_directory_history_is_global=false |
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} |
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function _per-directory-history-set-global-history() { |
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if [[ $_per_directory_history_is_global == false ]]; then |
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fc -AI $_per_directory_history_directory |
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local original_histsize=$HISTSIZE |
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HISTSIZE=0 |
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HISTSIZE=$original_histsize |
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if [[ -e "$HISTFILE" ]]; then |
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fc -R "$HISTFILE" |
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fi |
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fi |
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_per_directory_history_is_global=true |
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} |
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#add functions to the exec list for chpwd and zshaddhistory |
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autoload -U add-zsh-hook |
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add-zsh-hook chpwd _per-directory-history-change-directory |
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add-zsh-hook zshaddhistory _per-directory-history-addhistory |
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#start in directory mode |
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mkdir -p ${_per_directory_history_directory:h} |
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_per_directory_history_is_global=true |
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_per-directory-history-set-directory-history
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