WIP
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Daniel Flanagan
parent
861c1eff3a
commit
741305fb23
2 changed files with 79 additions and 29 deletions
71
bin/fsw
71
bin/fsw
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@ -1,11 +1,68 @@
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#!/usr/bin/env bash
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# Some examples in case you forget:
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# Elixir: fsw "mix run" ./**/*.{ex,exs}
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# Run bash file on any event (note single quotes): fsw 'bash ${__FSW_FILENAME}' ./**/*.bash
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_VERSION="0.2.0"
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SHELL_COMMAND="${1}"
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shift
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inotifywait -q -m -e close_write -r "${@}" | while read -r __FSW_FILENAME __FSW_EVENT; do
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eval "${SHELL_COMMAND}"
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function help() {
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I=" "
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cat <<USAGE
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fsw - run a command when a file is modified
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Usage:
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${I}fsw <command> [filter] [dirs...]
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${I}command - the specified bash command to eval
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${I}filter - an optional filename filter
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${I}dirs - the directories to watch (defaults to current directory)
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Advanced:
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${I}Command Variables:
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${I}${I}Your commands have runtime access to some variables associated with the
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${I}${I}${I}inotifywait event enabling further extensibility:
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${I}${I}+ FSW_FILENAME - the name of the file
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${I}${I}+ FSW_DIR - the directory containing the file
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${I}${I}+ FSW_PATH - the full relative path of the file
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${I}${I}+ FSW_FILE_EVENTS - a comma-separated list of the inotify events
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${I}Environment:
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${I}${I}Some customization options exist using environment variables
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${I}${I}${I}due to their uncommon usage.
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${I}${I}+ FSW_EVENTS - the list of events to have inotifywait observe
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References:
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${I}+ Filter works with grep -P
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${I}+ See inotifywait(1) for FSW_EVENTS options.
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Examples:
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${I}fsw 'make' '\.c$'
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${I}fsw 'bash \$filename' '\.bash$'
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${I}fsw 'mix test --failed' '.exs?$' lib test
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${I}FSW_EVENTS=open,access fsw 'espeak "Intruder Alert!"' \\
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${I}${I}${I}'.*' /etc/secrets \$HOME/.secrets
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USAGE
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}
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if [[ $1 = '-h' ]] || [[ $1 = '--help' ]] || [[ -z $1 ]]; then
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help
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exit 0
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fi
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FSW_EVENTS="${FSW_EVENTS:-close_write}"
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SHELL_COMMAND="${1}"; shift
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FILTER="${1}"; shift
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DIRS=("${1:-.}"); shift
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while [[ ! -z $1 ]]; do
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DIRS+=("$1"); shift
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done
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inotifywait -m -e "${FSW_EVENTS}" -r "${DIRS[@]}" 2>&1 \
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| grep --line-buffered -v ' Beware: since -r was given, this may take a while!' \
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| while read -r dir events filename; do
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if [[ "$dir $events" = "Watches established." ]]; then
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echo "Ready."
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else
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export FSW_FILENAME="$filename"
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export FSW_DIR="$dir"
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export FSW_PATH="$dir$filename"
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export FSW_FILE_EVENTS="$events"
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<<< "$FSW_PATH" grep -P
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eval "${SHELL_COMMAND}"
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fi
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done
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@ -1,43 +1,36 @@
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#!/usr/bin/env bash
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COLOR_RESET='\[\e[0m\]'
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# TODO: if root, background instead?
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PROMPT_SUCCESS_COLOR='\[\e[0;34m\]'
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PROMPT_FAILURE_COLOR='\[\e[0;31m\]'
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DIR_COLOR='\[\e[0;35m\]'
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MAX_PATH_PIECE_CHARS=3
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# prompt rendering functions
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preprocess_pwd() {
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name="$PWD"
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# if we're in the home directory, replace it with tilde
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# [[ "$name" =~ ^"$NICE_HOME"(/|$) ]] && name="~${name#$NICE_HOME}"
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[[ "$name" == "${NICE_HOME}" ]] && name="~"
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# replace all non-basename parts of the PWD with only the first two letters
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curdir=$(echo "$PWD" | sed -r 's|.*/(.+)$|\1|g')
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name=$(echo "$name" | sed -r 's|/(...)[^/]*|/\1|g' | sed -r 's|(.*/)(.+)$|\1|g')
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# if we're just in the home or root directory, don't show any path stuff
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[[ "$name" == "/" ]] && curdir=""
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[[ "$name" == "~" ]] && curdir=""
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# return our transformed PWD
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echo "$name$curdir"
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p="$PWD"
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[[ "$p" == "/" ]] && echo "/" && return 1
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[[ "$p" == "${NICE_HOME}" ]] && echo "~" && return 0
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# with ellipsis
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# echo "$(<<< "$p" cut -c2- | awk '{split($0,p,"/");for(k in p){if(length(p[k])>'"$((MAX_PATH_PIECE_CHARS+1))"'){printf "/%.'"$((MAX_PATH_PIECE_CHARS))"'s…",p[k]}else{printf "/%s",p[k]}}}')"
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# without ellipsis
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echo "$(<<< "$p" cut -c2- | awk '{split($0,p,"/");for(k in p){printf "/%.'"$MAX_PATH_PIECE_CHARS"'s",p[k]}}')"
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}
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export -f "preprocess_pwd"
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prompt_command_func()
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{
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# commit history to prevent data loss from edge cases
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history -a
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RET=$?
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# set the color of the user and host based on the result of the previous
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# command
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if [ $RET -eq 0 ]; then
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history -a # commit history to prevent data loss from edge cases
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# set the color of user@host based on the result of the previous command
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if [[ $RET -eq 0 ]]; then
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STATUS_COLOR=$PROMPT_SUCCESS_COLOR
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else
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STATUS_COLOR=$PROMPT_FAILURE_COLOR
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fi;
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PS1="$STATUS_COLOR\u@\h$COLOR_RESET $DIR_COLOR$(eval "preprocess_pwd")$COLOR_RESET "
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fi
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PS1="$STATUS_COLOR\u@\h$COLOR_RESET $DIR_COLOR$(preprocess_pwd)$COLOR_RESET "
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}
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export -f "prompt_command_func"
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export PROMPT_COMMAND="prompt_command_func"
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