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Merge pull request #1321 from jimhester/per-directory-history
Per directory history plugin
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Robby Russell
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1 changed files with 148 additions and 0 deletions
148
plugins/per-directory-history/per-directory-history.plugin.zsh
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148
plugins/per-directory-history/per-directory-history.plugin.zsh
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#!/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) 2012 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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#-------------------------------------------------------------------------------
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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 [[ $_per_directory_history_is_global == true ]]; then
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_per-directory-history-set-directory-history
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echo "using local history\n"
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else
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_per-directory-history-set-global-history
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echo "using global history\n"
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fi
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zle reset-prompt
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}
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autoload per-directory-history-toggle-history
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zle -N per-directory-history-toggle-history
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bindkey '^G' per-directory-history-toggle-history
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#-------------------------------------------------------------------------------
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# implementation details
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#-------------------------------------------------------------------------------
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_per_directory_history_directory="$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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print -sr -- ${1%%$'\n'}
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fc -p $_per_directory_history_directory
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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 "$HISTFILE"
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fi
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fi
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_per_directory_history_is_global=true
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}
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#add functions to the exec list for chpwd and zshaddhistory
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chpwd_functions=(${chpwd_functions[@]} "_per-directory-history-change-directory")
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zshaddhistory_functions=(${zshaddhistory_functions[@]} "_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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