43 lines
962 B
Bash
43 lines
962 B
Bash
trim() {
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local var="$*"
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# remove leading whitespace characters
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var="${var#"${var%%[![:space:]]*}"}"
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# remove trailing whitespace characters
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var="${var%"${var##*[![:space:]]}"}"
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printf '%s' "$var"
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}
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shortest()
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{
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# Returns the shortest of two strings
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if [[ ${#1} -lt ${#2} ]]
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then
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printf "%s" "$1"
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else
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printf "%s" "$2"
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fi
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}
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python_prompt()
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{
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local relative venvpath pyversion _
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venvpath="$(which python 2>/dev/null)"
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venvpath="${venvpath%/bin/python}"
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if [[ -z "$venvpath" ]] || [[ "$venvpath" == "/usr" ]]; then
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return
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fi
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relative="$(realpath --relative-to="$(pwd)" -s "$venvpath")"
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venvpath="$(shortest "$venvpath" "$relative")"
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if [[ "$venvpath" == ".venv" ]]; then
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venvpath="" # No need to tell me my venv is in .venv, I can guess it.
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fi
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read -r _ pyversion <<<"$(python --version)"
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printf "$1" "$(trim "$venvpath $pyversion")"
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}
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