Moving prepopulated search engines to a JSON file.

tools/json_to_struct/struct_generator.py

Index: tools/json_to_struct/struct_generator.py
diff --git a/tools/json_to_struct/struct_generator.py b/tools/json_to_struct/struct_generator.py
new file mode 100644
index 0000000000000000000000000000000000000000..501cb577e52d38eb6c01febb1ecc23b54c636e40
--- /dev/null
+++ b/tools/json_to_struct/struct_generator.py
@@ -0,0 +1,43 @@
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+def _GenerateArrayField(field_info):
+  """Generate a string defining an array field in a C structure.
+  """
+  contents = field_info['contents']
+  contents['field'] = '* ' + field_info['field']
+  if contents['type'] == 'array':
+    raise RuntimeError('Nested arrays are not supported.')
+  return (GenerateField(contents) + ';\n' +
+          '  const size_t %s_size') % field_info['field'];
+
+def GenerateField(field_info):
+  """Generate a string defining a field of the type specified by
+  field_info['type'] in a C structure.
+  """
+  field = field_info['field']
+  type = field_info['type']
+  if type == 'int':
+    return 'const int %s' % field
+  elif type == 'string':
+    return 'const char* const %s' % field
+  elif type == 'string16':
+    return 'const wchar_t* const %s' % field
+  elif type == 'enum':
+    return 'const %s %s' % (field_info['ctype'], field)
+  elif type == 'array':
+    return _GenerateArrayField(field_info)
+  else:
+    raise RuntimeError('Unknown field type "%s"' % type)
+
+def GenerateStruct(type_name, schema):
+  """Generate a string defining a structure containing the fields specified in
+  the schema list.
+  """
+  lines = [];
+  lines.append('struct %s {' % type_name)
+  for field_info in schema:
+    lines.append('  ' + GenerateField(field_info) + ';')
+  lines.append('};');
+  return '\n'.join(lines) + '\n';