mirror of
https://github.com/tj/git-extras.git
synced 2026-09-10 07:26:17 -04:00
132 lines
2.8 KiB
Bash
Executable file
132 lines
2.8 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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# Bash unofficial strict mode
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set -euo pipefail
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IFS=$'\n\t'
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if [[ "${1:-}" == "--newer" ]]; then
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op=le
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shift
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else
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op=eq
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fi
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# BSD systems
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if date -j &>/dev/null; then
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stat_flags="-f %m"
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date_flags="-r"
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else
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# Non-BSD systems
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stat_flags="-c %Y"
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date_flags="-d@"
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fi
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bash_opts=()
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if bash --help 2>&1 | grep -q -- '--noprofile'; then
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bash_opts+=(--noprofile)
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fi
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if bash --help 2>&1 | grep -q -- '--norc'; then
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bash_opts+=(--norc)
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fi
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status_opts=(--porcelain --short)
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# %ct: committer date, UNIX timestamp / %at: author date, UNIX timestamp
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log_opts=(--format='%ct')
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if git status --help 2>&1 | grep -q -- "--no-renames"; then
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status_opts+=(--no-renames)
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log_opts+=(--no-renames)
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fi
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if git status --help 2>&1 | grep -q -- "--untracked-files"; then
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status_opts+=(--untracked-files=no)
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fi
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if git status --help 2>&1 | grep -q -- "--ignored"; then
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status_opts+=(--ignored=no)
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fi
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prefix="$(git rev-parse --show-prefix) "
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strip="${#prefix}"
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tmpfile=$(mktemp)
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# shellcheck disable=SC2064
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trap "rm -f '${tmpfile}'" 0
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awk_flags=(
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-F'\t'
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-v date_flags="${date_flags}"
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-v op="${op}"
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-v stat_flags="${stat_flags}"
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-v strip="${strip}"
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-v tmpfile="${tmpfile}"
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)
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# sanity check, not required:
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if awk --help 2>&1 | grep -q -- '--posix'; then
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awk_flags+=(--posix)
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fi
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read -r -d '' awk_script <<"EOF" || true
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BEGIN {
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seen[""]=1
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print "#!/usr/bin/env bash"
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print "set +e"
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print "t() {"
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print " test -e \"$2\" || return 0"
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printf(" test \"$(stat %s \"$2\" 2>/dev/null)\" -%s \"$1\" && return 0\n", stat_flags, op)
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if (date_flags == "-d@") {
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print " echo \"+ touch -h -d@$1 $2\""
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print " touch -h -d@$1 \"$2\""
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} else {
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print " t=$(date -r$1 \"+%Y%m%d%H%M.%S\")"
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print " echo \"+ touch -h -t $t $2\""
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print " touch -h -t $t \"$2\""
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}
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print "}"
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}
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FILENAME==tmpfile {
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skip[$1]=1
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next
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}
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# skip blank lines
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!/^$/ {
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# skip deletes
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if (substr($1, length($1), 1) ~ /D/) {
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next
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}
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if (NF == 1) {
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ct=$1
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next
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}
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$2 = substr($2, strip, length($2)- strip + 1)
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if ($2 in seen) {
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next
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}
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if ($2 in skip) {
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next
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}
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seen[$2]=1
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# remove enclosing double quotes that git adds:
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if (substr($2, 1, 1) == "\"" && substr($2, length($2), 1) == "\"") {
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$2 = substr($2, 2, length($2) - 2)
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# unescape remaining double quotes
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gsub(/\\"/, "\"", $2)
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# unescape escaped backslashes
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gsub(/\\\\/, "\\", $2)
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}
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# escape apostrophes: ' => '\''
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gsub(/'/, "'\\''", $2)
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printf("t %s '%s'\n", ct, $2)
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}
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EOF
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# prefix is stripped:
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git --no-pager status "${status_opts[@]}" . \
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| cut -c 4- >"${tmpfile}"
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# prefix is not stripped:
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git --no-pager log --raw --no-merges "${log_opts[@]}" . \
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| awk "${awk_flags[@]}" "${awk_script}" "${tmpfile}" - \
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| BASH_ENV='' bash "${bash_opts[@]}" -
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