fixed compound commands not working in pipelines
improved pipe assignment logic to prevent potential resource leaks
This commit is contained in:
200
examples/cool_prompt.sh
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200
examples/cool_prompt.sh
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# This is the code for the prompt I currently use
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# It makes use of the '\@funcname' function expansion escape sequence
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# and the '-p' flag for echo which expands prompt escape sequences
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#
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# The final product looks like this:
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# ┏━ user@hostname INSERT
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# ┃ 1ms
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# ┃ main[!?] ~1 +1 -1
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# ┃ 1 job(s) running
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# ┣━━ ~/path/to/pwd/
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# ┗━ $ $shed 0.5.0 (x86_64 linux)
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# (The vi mode indicator is styled to match the color of the separators)
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prompt() {
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local statline="$(prompt_stat_line)"
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local topline="$(prompt_topline)"
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local jobsline="$(prompt_jobs_line)"
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local sshline="$(prompt_ssh_line)"
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local pwdline="$(prompt_pwd_line)"
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local dollarline="$(prompt_dollar_line)"
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local prompt="$topline$statline$PROMPT_GIT_LINE$jobsline$sshline$pwdline\n$dollarline"
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echo -en "$prompt"
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}
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prompt_dollar_line() {
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local dollar="$(echo -p "\$ ")"
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local dollar="$(echo -e "\e[1;32m$dollar\e[0m")"
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echo -n "\e[1;34m┗━ $dollar "
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}
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prompt_git_line() {
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# git is really expensive so we've gotta make these calls count
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# get the status
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local status="$(git status --porcelain -b 2>/dev/null)" || return
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local branch="" gitsigns="" ahead=0 behind=0
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# split at the first linebreak
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local header="${status%%$'\n'*}"
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# cut the '## ' prefix
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branch="${header#\#\# }"
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# cut the '..' suffix
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branch="${branch%%...*}"
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# parse ahead/behind counts
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case "$header" in
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*ahead*) ahead="${header#*ahead }"; ahead="${ahead%%[],]*}"; gitsigns="${gitsigns}↑" ;;
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esac
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case "$header" in
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*behind*) behind="${header#*behind }"; behind="${behind%%[],]*}"; gitsigns="${gitsigns}↓" ;;
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esac
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# grab gitsigns
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case "$status" in
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# unstaged changes
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*$'\n'" "[MAR]*) gitsigns="${gitsigns}!" ;;
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esac
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case "$status" in
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# untracked files
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*$'\n'"??"*) gitsigns="${gitsigns}?" ;;
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esac
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case "$status" in
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# deleted files
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*$'\n'" "[D]*) gitsigns="${gitsigns}" ;;
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esac
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case "$status" in
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# staged changes
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*$'\n'[MADR]*) gitsigns="${gitsigns}+" ;;
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esac
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# unfortunately we need one more git fork
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local diff="$(git diff --shortstat 2>/dev/null)"
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local changed="" add="" del=""
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if [ -n "$diff" ]; then
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changed="${diff%% file*}"; changed="${changed##* }"
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case "$diff" in
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*insertion*) add="${diff#*, }"; add="${add%% *}" ;;
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esac
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case "$diff" in
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*deletion*) del="${diff% deletion*}"; del="${del##* }" ;;
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esac
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fi
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if [ -n "$gitsigns" ] || [ -n "$branch" ]; then
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# style gitsigns if not empty
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[ -n "$gitsigns" ] && gitsigns="\e[1;31m[$gitsigns]"
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# style changed/deleted/added text
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[ -n "$changed" ] && [ "$changed" -gt 0 ] && changed="\e[1;34m~$changed \e[0m"
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[ -n "$add" ] && [ "$add" -gt 0 ] && add="\e[1;32m+$add \e[0m"
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[ -n "$del" ] && [ "$del" -gt 0 ] && del="\e[1;31m-$del\e[0m"
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# echo the final product
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echo -n "\e[1;34m┃ \e[1;35m $branch$gitsigns\e[0m $changed$add$del\n"
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fi
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}
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prompt_jobs_line() {
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local job_count="$(echo -p '\j')"
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if [ "$job_count" -gt 0 ]; then
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echo -n "\e[1;34m┃ \e[1;33m $job_count job(s) running\e[0m\n"
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fi
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}
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prompt_mode() {
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local mode=""
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local normal_fg='\e[0m\e[30m\e[1;43m'
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local normal_bg='\e[0m\e[33m'
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local insert_fg='\e[0m\e[30m\e[1;46m'
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local insert_bg='\e[0m\e[36m'
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local command_fg='\e[0m\e[30m\e[1;42m'
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local command_bg='\e[0m\e[32m'
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local visual_fg='\e[0m\e[30m\e[1;45m'
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local visual_bg='\e[0m\e[35m'
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local replace_fg='\e[0m\e[30m\e[1;41m'
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local replace_bg='\e[0m\e[31m'
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local search_fg='\e[0m\e[30m\e[1;47m'
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local search_bg='\e[0m\e[39m'
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local complete_fg='\e[0m\e[30m\e[1;47m'
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local complete_bg='\e[0m\e[39m'
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# shed exposes it's current vi mode as a variable
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case "$SHED_VI_MODE" in
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"NORMAL")
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mode="$normal_bg${normal_fg}NORMAL$normal_bg\e[0m"
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;;
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"INSERT")
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mode="$insert_bg${insert_fg}INSERT$insert_bg\e[0m"
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;;
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"COMMAND")
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mode="$command_bg${command_fg}COMMAND$command_bg\e[0m"
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;;
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"VISUAL")
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mode="$visual_bg${visual_fg}VISUAL$visual_bg\e[0m"
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;;
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"REPLACE")
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mode="$replace_bg${replace_fg}REPLACE$replace_bg\e[0m"
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;;
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"VERBATIM")
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mode="$replace_bg${replace_fg}VERBATIM$replace_bg\e[0m"
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;;
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"COMPLETE")
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mode="$complete_bg${complete_fg}COMPLETE$complete_bg\e[0m"
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;;
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"SEARCH")
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mode="$search_bg${search_fg}SEARCH$search_bg\e[0m"
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;;
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*)
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mode=""
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;;
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esac
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echo -en "$mode\n"
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}
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prompt_pwd_line() {
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# the -p flag exposes prompt escape sequences like '\W'
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echo -p "\e[1;34m┣━━ \e[1;36m\W\e[1;32m/"
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}
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prompt_ssh_line() {
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local ssh_server="$(echo $SSH_CONNECTION | cut -f3 -d' ')"
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[ -n "$ssh_server" ] && echo -n "\e[1;34m┃ \e[1;39m🌐 $ssh_server\e[0m\n"
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}
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prompt_stat_line() {
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local last_exit_code="$?"
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local last_cmd_status
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local last_cmd_runtime
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if [ "$last_exit_code" -eq "0" ]; then
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last_cmd_status="\e[1;32m"
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else
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last_cmd_status="\e[1;31m"
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fi
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local last_runtime_raw="$(echo -p "\t")"
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if [ -z "$last_runtime_raw" ]; then
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return 0
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else
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last_cmd_runtime="\e[1;38;2;249;226;175m ${last_cmd_status}$(echo -p "\T")\e[0m"
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fi
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echo -n "\e[1;34m┃ $last_cmd_runtime\e[0m\n"
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}
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prompt_topline() {
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local user_and_host="\e[0m\e[1m$USER\e[1;36m@\e[1;31m$HOST\e[0m"
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local mode_text="$(prompt_mode)"
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echo -n "\e[1;34m┏━ $user_and_host $mode_text\n"
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}
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shed_ver() {
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shed --version
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}
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export PS1="\@prompt "
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# PSR is the text that expands on the right side of the prompt
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export PSR='\e[36;1m$\@shed_ver\e[0m'
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