# From inside the SVN subdir you want to extract:
set -euo pipefail

DEST="${1:-trunk-git}"

echo "Exporting SVN working copy to $DEST (versioned files only)..."
rm -rf -- "$DEST"
count=0
start_ts="$(date +%s.%N)"
if command -v stdbuf >/dev/null 2>&1; then
  export_cmd=(stdbuf -o0 -e0 svn export . "$DEST")
  awk_cmd=(stdbuf -o0 awk -v start="$start_ts")
else
  export_cmd=(svn export . "$DEST")
  awk_cmd=(awk -W interactive -v start="$start_ts")
fi

"${export_cmd[@]}" | "${awk_cmd[@]}" '
  function elapsed() {
    cmd = "date +%s.%N"
    cmd | getline now
    close(cmd)
    split(start, s, ".")
    split(now, n, ".")
    return (n[1]-s[1]) + (n[2]-s[2])/1e9
  }
  {
    count++
    if (count % 25 == 0) {
      t = elapsed()
      printf("[%.1fs] Exported %d items\n", t, count)
      fflush()
    }
  }
  END {
    t = elapsed()
    printf("[%.1fs] Exported %d items (done)\n", t, count)
  }
'

cd "$DEST"
git init
git config init.defaultBranch trunk || true
git add -A
git commit -m "Import SVN snapshot" || true