mirror of
https://github.com/notwa/rc
synced 2024-06-01 15:33:07 -07:00
37 lines
859 B
Bash
Executable File
37 lines
859 B
Bash
Executable File
#!/usr/bin/env bash
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# YES_ZSH
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# YES_BASH
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# NO_DASH
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### @ confirm
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### display a simple yes-or-no prompt and return 0-or-1 respectively.
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###
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### ```
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### $ confirm && echo yay || echo nay
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### Continue? [y/N] y
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### yay
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### $ confirm && echo yay || echo nay
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### Continue? [y/N] n
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### nay
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### ```
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if [ -n "$ZSH_VERSION" ]; then
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confirm() {
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[ $# -le 0 ] || { printf "%s\n" "$0: too many arguments" >&2; return 1; }
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read -q '?Continue? [y/N] '
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ret=$?
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echo
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return $ret
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}
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else
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confirm() {
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# specify stdin (1) to avoid taking input from pipes
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[ $# -le 0 ] || { printf "%s\n" "$0: too many arguments" >&2; return 1; }
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read -n1 -u 1 -p "Continue? [y/N] " c
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echo
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[ "$c" != 'y' ] && [ "$c" != 'Y' ] && return 1
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return 0
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}
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fi
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[ "${SOURCING:-0}" -gt 0 ] || confirm "$@"
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