36 lines
660 B
Bash
Executable File
36 lines
660 B
Bash
Executable File
#! /bin/sh
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if [ "$1" = "-f" ]; then
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shift
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DATE_FORMAT="$1"
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shift
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fi
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: ${FILE:=$1}
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: ${DATE_FILE:=$(dirname "$FILE")/.$(basename "${FILE}").date}
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: ${DEFAULT_DATE:=$2}
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: ${DATE_FORMAT:=%Y-%m-%d}
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date=
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[ -n "${FILE}" ] || {
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echo >&2 "$0 $(dirname "$0")/file [$(dirname "$0")/file.date [DEFAULT_DATE]]"
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exit 1
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}
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[ -f "${DATE_FILE}" ] && date="$(cat "${DATE_FILE}")"
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[ -n "${date}" ] ||
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date="$(git log -n 1 --format=format:%cD --no-patch "${FILE}")"
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[ -n "${date}" ] || year="${DEFAULT_DATE}"
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[ -n "${date}" ] || date="$(date -u)"
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[ -n "${date}" ] || {
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echo >&2 'Undefined date.'
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exit 1
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}
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exec printf "%s" $(date "+${DATE_FORMAT}" -d "${date}")
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