Nomad changes

scripts/lib/common.sh

@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+get_repo_root() {
+  local start_dir current_dir
+  start_dir="$(pwd)"
+  current_dir="$start_dir"
+
+  while [ "$current_dir" != "/" ]; do
+    if [ -f "$current_dir/Cargo.toml" ]; then
+      echo "$current_dir"
+      return 0
+    fi
+    current_dir="$(dirname "$current_dir")"
+  done
+
+  echo "Error: Could not find repository root (Cargo.toml) from: $start_dir" >&2
+  return 1
+}
+
+validate_repo_root() {
+  local repo_root="${1:-${REPO_ROOT:-}}"
+
+  if [ -z "$repo_root" ]; then
+    echo "Error: REPO_ROOT not provided and env var not set" >&2
+    return 1
+  fi
+
+  if [ ! -f "$repo_root/Cargo.toml" ]; then
+    echo "Error: REPO_ROOT validation failed. Expected Cargo.toml at: $repo_root/Cargo.toml" >&2
+    echo "REPO_ROOT resolved to: $repo_root" >&2
+    return 1
+  fi
+
+  return 0
+}
+
+error_exit() {
+  local message="${1:-Unknown error}"
+  local exit_code="${2:-1}"
+  echo "Error: $message" >&2
+  exit "$exit_code"
+}
+
+get_platform() {
+  if [ -n "${RUNNER_OS:-}" ]; then
+    echo "$RUNNER_OS"
+  else
+    case "$(uname -s)" in
+    Linux*)
+      echo "Linux"
+      ;;
+    Darwin*)
+      echo "macOS"
+      ;;
+    MINGW* | MSYS* | CYGWIN*)
+      echo "Windows"
+      ;;
+    *)
+      echo "unknown"
+      ;;
+    esac
+  fi
+}
+
+export -f get_repo_root
+export -f validate_repo_root
+export -f error_exit
+export -f get_platform