Created
November 18, 2025 23:20
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| #!/usr/bin/env bash | |
| set -euo pipefail | |
| if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then | |
| echo "Usage: attrib [COMMIT_HASH] [AUTHOR_NAME]" | |
| echo | |
| echo "Defaults:" | |
| echo " COMMIT_HASH = git rev-parse HEAD" | |
| echo " AUTHOR_NAME = jmcph4" | |
| exit 0 | |
| fi | |
| commit="${1:-$(git rev-parse HEAD)}" | |
| user="${2:-jmcph4}" | |
| tmpfile="$(mktemp)" | |
| # List only blob paths (skip submodules/gitlinks), NUL-delimited | |
| git ls-tree -r -z "$commit" \ | |
| | while IFS=$'\t' read -r -d '' meta path; do | |
| # meta is like: "100644 blob <sha>" | |
| # we only want entries where type == blob | |
| set -- $meta | |
| type=$2 | |
| if [ "$type" = "blob" ]; then | |
| printf '%s\0' "$path" | |
| fi | |
| done \ | |
| | xargs -0 -n1 -P"$(nproc)" git blame --line-porcelain "$commit" -- \ | |
| | sed -n 's/^author //p' > "$tmpfile" | |
| total=$(wc -l < "$tmpfile") | |
| mine=$(grep -Fx -c "$user" "$tmpfile") | |
| rm "$tmpfile" | |
| awk -v m="$mine" -v t="$total" 'BEGIN{ if (t==0) print 0; else printf "%.2f%%\n", 100*m/t }' |
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