38 lines
1.3 KiB
Bash
38 lines
1.3 KiB
Bash
#!/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=${BASH_PROMPT_MAX_PATH_PIECE_CHARS:-3}
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# prompt rendering functions
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preprocess_pwd() {
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p="$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($0,p,"/");for(k in p){if(k==length(p)){printf "/%s",p[k]}else{if(length(p[k])>'"$((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($0,p,"/");for(k in p){if(k==length(p)){printf "/%s",p[k]}else{printf "/%.'"$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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RET=$?
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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 $DIR_COLOR$(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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