[olympic] Improve error handling in file-to-cpp

util/scripts/file-to-cpp.py

@@ -15,6 +15,9 @@ import pathlib
 import sys
 
 
+tool_name = 'file-to-cpp'
+
+
 def write_txt_file(path: str, txt: str):
     with open(path, "w") as f:
         f.write(txt)
@@ -22,18 +25,22 @@ def write_txt_file(path: str, txt: str):
 
 
 def file_to_hex(path: str, line_prefix: str) -> tuple[str, int]:
-    with open(path, 'rb') as f:
-        out = line_prefix
-        data = f.read()
-        i = 1
-        for b in data:
-            out += f"{b:#0{4}x},"
-            if i % 10 == 0:
-                out += '\n\t'
-            else:
-                out += ' '
-            i += 1
-        return out[:-1], len(data)
+    try:
+        with open(path, 'rb') as f:
+            out = line_prefix
+            data = f.read()
+            i = 1
+            for b in data:
+                out += f"{b:#0{4}x},"
+                if i % 10 == 0:
+                    out += '\n\t'
+                else:
+                    out += ' '
+                i += 1
+            return out[:-1], len(data)
+    except FileNotFoundError:
+        print(f'{tool_name}: included file not found: {path}', file=sys.stderr)
+        sys.exit(1)
 
 
 def file_to_cpp(path: str, cpp_name: str) -> tuple[str, str]:
@@ -76,11 +83,11 @@ def proc_rsrc_file(rsrc_path: str):# Open and read the JSON file
         all_files_func += f'\nox::Vector<ox::SpanView<uint8_t>> {all_files}() noexcept {{\n\treturn {{\n'
     for f in data['files']:
         if 'path' not in f:
-            print('src file path missing', file=sys.stderr)
+            print(f'{tool_name}: src file path missing', file=sys.stderr)
             sys.exit(1)
         path = f['path']
         if 'cpp_name' not in f:
-            print('var name missing', file=sys.stderr)
+            print(f'{tool_name}: var name missing', file=sys.stderr)
             sys.exit(1)
         cpp_name = f['cpp_name']
         c, h = file_to_cpp(os.path.join(base_path, path), cpp_name)