first commit

scripts/setup-upstream.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT"
+
+REMOTE="upstream-oxi"
+URL="https://github.com/c0h1b4/oxi.git"
+
+if ! git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
+  echo "error: RustBox must be a Git checkout before configuring Oxi upstream." >&2
+  echo "Initialize it first:" >&2
+  echo "  git init" >&2
+  echo "  git add ." >&2
+  echo "  git commit -m 'RustBox 0.0.1 baseline'" >&2
+  exit 1
+fi
+
+if git remote get-url "$REMOTE" >/dev/null 2>&1; then
+  current="$(git remote get-url "$REMOTE")"
+  if [ "$current" != "$URL" ]; then
+    echo "error: remote '$REMOTE' already points to: $current" >&2
+    echo "expected: $URL" >&2
+    exit 1
+  fi
+else
+  git remote add "$REMOTE" "$URL"
+fi
+
+git fetch "$REMOTE" --tags
+
+BASE="$(tr -d '[:space:]' < UPSTREAM_BASE)"
+if ! git cat-file -e "$BASE^{commit}" 2>/dev/null; then
+  echo "error: recorded Oxi base commit is not available after fetch: $BASE" >&2
+  exit 1
+fi
+
+printf 'Oxi upstream configured.\n'
+printf 'Remote: %s -> %s\n' "$REMOTE" "$URL"
+printf 'Consumed Oxi baseline: %s\n' "$BASE"
+printf 'Latest upstream-oxi/main: %s\n' "$(git rev-parse upstream-oxi/main)"