29 lines
986 B
Bash
29 lines
986 B
Bash
silentRead() {
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# `typeset` doesn't work in `func()` of ksh.
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# `function fnc` for local-var of ksh is not compatible.
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# Therefore, `_input` is not local-var on ksh.
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local _input="" 2>/dev/null || typeset _input=""
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stty --file=/dev/tty -echo echonl 2>/dev/null || \
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stty -F /dev/tty -echo echonl 2>/dev/null || \
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stty -f /dev/tty -echo echonl 2>/dev/null || \
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exit 1
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IFS= read -r _input </dev/tty
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stty --file=/dev/tty echo -echonl 2>/dev/null || \
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stty -F /dev/tty echo -echonl 2>/dev/null || \
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stty -f /dev/tty echo -echonl 2>/dev/null
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printf '%s' "$_input"
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}
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if [ "$1" = "noechoback" ]; then
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# Try `-s` option. *ksh have it that not `--silent`. Therefore, don't try it.
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if [ -n "$BASH_VERSION" ] || [ -n "$ZSH_VERSION" ]; then
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IFS= read -rs INPUT </dev/tty 2>/dev/null || INPUT=`silentRead` || exit 1
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printf '\n' >/dev/tty
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else
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INPUT=`silentRead` || exit 1
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fi
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else
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IFS= read -r INPUT </dev/tty
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fi
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printf '%s' "'$INPUT'"
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exit 0
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