1 files changed, 127 insertions, 0 deletions
diff --git a/docs/build_toc.sh b/docs/build_toc.sh
new file mode 100755
index 000000000..9c158d6a2
--- /dev/null
+++ b/docs/build_toc.sh
@@ -0,0 +1,127 @@
+#!/usr/bin/env bash
+set -e
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+project_root="$(dirname "$script_dir")"
+check_only=0
+
+show_help() {
+  me=$(basename "$0")
+  cat <<EOF
+$me: Build table of contents for documentation directories
+
+Usage: $me [--help] [--source <path>] [--check-only]
+
+Options:
+  --help           Show this help message
+  --source         Path to project root directory (defaults to parent of the script directory)
+  --check-only     Check if TOC needs updating, exit 1 if changes needed
+EOF
+}
+
+while [[ "$#" -gt 0 ]]; do
+  case $1 in
+  -h | --help)
+    show_help
+    exit 0
+    ;;
+  --source)
+    project_root="$2"
+    shift
+    ;;
+  --check-only)
+    check_only=1
+    ;;
+  *)
+    echo "unrecognized argument: $1" >&2
+    show_help >&2
+    exit 1
+    ;;
+  esac
+  shift
+done
+
+missing_bin=0
+
+require_bin() {
+  local name="$1"
+  if ! command -v "$name" &>/dev/null; then
+    echo "This script needs $name, but it isn't in \$PATH" >&2
+    missing_bin=1
+    return
+  fi
+}
+
+require_bin "mcs"
+require_bin "mono"
+
+if [ "$missing_bin" -eq 1 ]; then
+  exit 1
+fi
+
+temp_dir=$(mktemp -d)
+trap 'rm -rf "$temp_dir"' EXIT
+
+cd "$project_root/docs" || exit 1
+
+cat >"$temp_dir/temp_program.cs" <<EOL
+$(cat "$script_dir/scripts/Program.cs")
+
+namespace toc
+{
+    class Program
+    {
+        static int Main(string[] args)
+        {
+            if (args.Length < 1)
+            {
+                Console.WriteLine("Please provide a directory path");
+                return 1;
+            }
+
+            try
+            {
+                Builder.Run(args[0]);
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(\$"Error: {ex.Message}");
+                return 1;
+            }
+        }
+    }
+}
+EOL
+
+if ! mcs -r:System.Core "$temp_dir/temp_program.cs" -out:"$temp_dir/toc-builder.exe"; then
+  echo "Compilation of $script_dir/scripts/Program.cs failed" >&2
+  exit 1
+fi
+
+for dir in "user-guide" "gfx-user-guide"; do
+  if [ -d "$script_dir/$dir" ]; then
+    if [ "$check_only" -eq 1 ]; then
+      # Ensure working directory is clean
+      if ! git diff --quiet "$script_dir/$dir/toc.html" 2>/dev/null; then
+        echo "Working directory not clean, cannot check TOC" >&2
+        exit 1
+      fi
+    fi
+
+    if ! mono "$temp_dir/toc-builder.exe" "$script_dir/$dir"; then
+      echo "TOC generation failed for $dir" >&2
+      exit 1
+    fi
+
+    if [ "$check_only" -eq 1 ]; then
+      if ! git diff --quiet "$script_dir/$dir/toc.html" 2>/dev/null; then
+        git diff --color "$script_dir/$dir/toc.html"
+        git checkout -- "$script_dir/$dir/toc.html" 2>/dev/null
+        exit 1
+      fi
+    fi
+  else
+    echo "Directory $dir not found" >&2
+  fi
+done