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31 lines
1 KiB
Bash
Executable file
31 lines
1 KiB
Bash
Executable file
#!/usr/bin/env bash
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#
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# Change files modification time to their last commit date
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#
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if [ "$1" = --touch ]; then
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# Internal use option only just to parallelize things.
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shift
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for f; do
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iso_t=$(git --no-pager log --no-renames --pretty=format:%cI -1 @ -- "$f" 2>/dev/null)
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if [ -n "$iso_t" ]; then
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bsd=$(date -j > /dev/null 2>&1 && echo 'true')
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if [ "$bsd" == "true" ]; then
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t=$(date -j -f %Y-%m-%dT%H:%M:%S "$iso_t" +%Y%m%d%H%M.%S)
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else
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t=$(date -d"$iso_t" +%Y%m%d%H%M.%S)
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fi
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echo "+ touch -t $t $f" >&2
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touch -t "$t" "$f"
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fi
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done
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else
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opt_r=$(xargs -r false < /dev/null > /dev/null 2>&1 && echo '-r')
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# `-n` should be limited or parallelization will not give effect,
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# because all args will go into single worker.
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NPROC=$(nproc 2>/dev/null || sysctl -n hw.ncpu 2>/dev/null || getconf _NPROCESSORS_ONLN 2>/dev/null)
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# shellcheck disable=SC2086
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git ls-tree -z -r -t --name-only @ \
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| xargs -0 -P${NPROC:-1} -n${NPROC:-1} $opt_r git utimes --touch
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fi
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