docs: setup_extract.sh

setup_extract.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+TAR_NAME="DressCode.tar"
+OUT_DIR="${1:-${SCRIPT_DIR}/data/DressCode}"
+TAR_PATH="${SCRIPT_DIR}/${TAR_NAME}"
+
+join_parts() {
+  local out="$1"
+  shopt -s nullglob
+  local parts=( "${out}".part* )
+  shopt -u nullglob
+  [[ ${#parts[@]} -gt 0 ]] || return 1
+  IFS=$'\n' parts=( $(printf '%s\n' "${parts[@]}" | sort) )
+  echo "==> Joining ${#parts[@]} parts -> ${out}"
+  rm -f "${out}"
+  cat "${parts[@]}" > "${out}"
+}
+
+if [[ ! -f "${TAR_PATH}" ]]; then
+  join_parts "${TAR_PATH}" || { echo "ERROR: missing ${TAR_PATH} / parts" >&2; exit 1; }
+fi
+
+PARENT="$(dirname "${OUT_DIR}")"
+mkdir -p "${PARENT}"
+echo "==> Extracting ${TAR_NAME} -> ${PARENT}"
+tar -xf "${TAR_PATH}" -C "${PARENT}"
+
+ROOT="${OUT_DIR}"
+if [[ -d "${PARENT}/DressCode/dresses" ]]; then ROOT="${PARENT}/DressCode"
+elif [[ -d "${OUT_DIR}/DressCode/dresses" ]]; then ROOT="${OUT_DIR}/DressCode"
+elif [[ -d "${OUT_DIR}/dresses" ]]; then ROOT="${OUT_DIR}"; fi
+
+echo "==> Verifying layout under ${ROOT}"
+missing=0
+for n in dresses upper_body lower_body; do
+  if [[ ! -d "${ROOT}/${n}" ]]; then echo "  MISSING: ${n}"; missing=1; else echo "  OK: ${n}"; fi
+done
+[[ "${missing}" -eq 0 ]] || exit 2
+echo "==> Done. Dataset root: ${ROOT}"
+echo "Optional: rm -f '${TAR_PATH}' '${TAR_PATH}'.part*"