Repo Scan

# Clone first so the pinned commit can be reviewed before installationset -euo pipefail
REPO_SCAN_COMMIT=2742664ebcad1450c208eda0ae45d3c17fad5dd8REPO_SCAN_INSTALL_DIR="${CLAUDE_CONFIG_DIR:-$HOME/.claude}/skills/repo-scan"REPO_SCAN_INSTALL_PARENT="$(dirname "$REPO_SCAN_INSTALL_DIR")"mkdir -p "$REPO_SCAN_INSTALL_PARENT"REPO_SCAN_TMP="$(mktemp -d "$REPO_SCAN_INSTALL_PARENT/.repo-scan-install.XXXXXX")"REPO_SCAN_TOKEN="${REPO_SCAN_TMP##*.}"REPO_SCAN_STAGE="$REPO_SCAN_TMP/stage-$REPO_SCAN_TOKEN"REPO_SCAN_BACKUP="$REPO_SCAN_TMP/backup-$REPO_SCAN_TOKEN"REPO_SCAN_LOCK="$REPO_SCAN_INSTALL_PARENT/.repo-scan-install.lock"REPO_SCAN_KEEP_TMP=0REPO_SCAN_LOCK_HELD=0REPO_SCAN_MV_HAS_NO_TARGET=0cleanup_repo_scan_install() {  if [ "$REPO_SCAN_KEEP_TMP" -eq 0 ]; then    rm -rf -- "$REPO_SCAN_TMP"  fi  if [ "$REPO_SCAN_LOCK_HELD" -eq 1 ] && ! rmdir -- "$REPO_SCAN_LOCK"; then    printf 'Could not release installation lock at %s\n' "$REPO_SCAN_LOCK" >&2  fi}trap cleanup_repo_scan_install EXITmkdir "$REPO_SCAN_TMP/mv-probe-source"if mv -T -- "$REPO_SCAN_TMP/mv-probe-source" \  "$REPO_SCAN_TMP/mv-probe-destination" 2>/dev/null; then  REPO_SCAN_MV_HAS_NO_TARGET=1  rmdir "$REPO_SCAN_TMP/mv-probe-destination"else  rmdir "$REPO_SCAN_TMP/mv-probe-source"fimove_repo_scan_dir() {  REPO_SCAN_MOVE_SOURCE=$1  REPO_SCAN_MOVE_DESTINATION=$2  REPO_SCAN_MOVE_NAME=${REPO_SCAN_MOVE_SOURCE##*/}  if [ -e "$REPO_SCAN_MOVE_DESTINATION" ] || [ -L "$REPO_SCAN_MOVE_DESTINATION" ]; then    return 1  fi  if [ "$REPO_SCAN_MV_HAS_NO_TARGET" -eq 1 ]; then    mv -T -- "$REPO_SCAN_MOVE_SOURCE" "$REPO_SCAN_MOVE_DESTINATION"    return  fi  if ! mv -- "$REPO_SCAN_MOVE_SOURCE" "$REPO_SCAN_MOVE_DESTINATION"; then    return 1  fi  if [ -e "$REPO_SCAN_MOVE_DESTINATION/$REPO_SCAN_MOVE_NAME" ] || \    [ -L "$REPO_SCAN_MOVE_DESTINATION/$REPO_SCAN_MOVE_NAME" ]; then    if ! mv -- "$REPO_SCAN_MOVE_DESTINATION/$REPO_SCAN_MOVE_NAME" \      "$REPO_SCAN_MOVE_SOURCE"; then      REPO_SCAN_KEEP_TMP=1      printf 'Move conflict recovery failed; staged data remains at %s\n' \        "$REPO_SCAN_MOVE_DESTINATION/$REPO_SCAN_MOVE_NAME" >&2    fi    return 1  fi}
git clone --filter=blob:none --no-checkout \  https://github.com/haibindev/repo-scan.git "$REPO_SCAN_TMP/source"git -C "$REPO_SCAN_TMP/source" checkout --detach "$REPO_SCAN_COMMIT"mkdir -p "$REPO_SCAN_STAGE"git -C "$REPO_SCAN_TMP/source" archive "$REPO_SCAN_COMMIT" | \  tar -xf - -C "$REPO_SCAN_STAGE"
# Review "$REPO_SCAN_TMP/source" before approving installation.printf 'Type install to replace %s after reviewing the pinned source: ' \  "$REPO_SCAN_INSTALL_DIR" >&2read -r REPO_SCAN_CONFIRMif [ "$REPO_SCAN_CONFIRM" != install ]; then  printf 'Installation cancelled.\n' >&2  exit 1fiif ! mkdir -- "$REPO_SCAN_LOCK" 2>/dev/null; then  printf 'Another repo-scan installation holds the lock at %s\n' \    "$REPO_SCAN_LOCK" >&2  exit 1fiREPO_SCAN_LOCK_HELD=1
if [ -e "$REPO_SCAN_INSTALL_DIR" ] || [ -L "$REPO_SCAN_INSTALL_DIR" ]; then  move_repo_scan_dir "$REPO_SCAN_INSTALL_DIR" "$REPO_SCAN_BACKUP"fiif ! move_repo_scan_dir "$REPO_SCAN_STAGE" "$REPO_SCAN_INSTALL_DIR"; then  if [ -e "$REPO_SCAN_BACKUP" ] || [ -L "$REPO_SCAN_BACKUP" ]; then    if [ -e "$REPO_SCAN_INSTALL_DIR" ] || [ -L "$REPO_SCAN_INSTALL_DIR" ]; then      REPO_SCAN_KEEP_TMP=1      printf 'Replacement failed and target was recreated; previous installation preserved at %s\n' \        "$REPO_SCAN_BACKUP" >&2    elif ! move_repo_scan_dir "$REPO_SCAN_BACKUP" "$REPO_SCAN_INSTALL_DIR"; then      REPO_SCAN_KEEP_TMP=1      printf 'Replacement and rollback failed; previous installation preserved at %s\n' \        "$REPO_SCAN_BACKUP" >&2    fi  fi  exit 1fi