25 lines
697 B
Bash
Executable File
25 lines
697 B
Bash
Executable File
#!/usr/bin/env bash
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# prompt.sh — plain y/N prompts.
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# ask "prompt?" [default y|n] -> sets REPLY
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# Under ${ALL:-0} (the --yes flag) assume the stated default without
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# reading stdin, so a fully non-interactive run never blocks on a read.
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ask() {
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local p="$1" d="${2:-y}" hint
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if [[ "$d" == "y" ]]; then hint="[Y/n]"; else hint="[y/N]"; fi
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if (( ${ALL:-0} )); then
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REPLY="$d"
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return
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fi
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read -rp "$p $hint " REPLY
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[[ -z "$REPLY" ]] && REPLY="$d"
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}
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# yn "prompt?" [default] -> returns 0 (true) if answer is yes
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yn() {
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ask "$1" "${2:-y}"
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[[ "$REPLY" =~ ^[Yy]$ ]]
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}
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# confirm_once "prompt?" default -> for destructive single confirm
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confirm_once() { yn "$1" "${2:-n}"; } |