Chromium side changes to add the ledger API.

tools/json_schema_compiler/compiler.py

 #!/usr/bin/env python
 # 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.
 """Generator for C++ structs from api json files.
 
 The purpose of this tool is to remove the need for hand-written code that
 converts to and from base::Value types when receiving javascript api calls.
 Originally written for generating code for extension apis. Reference schemas
 are in chrome/common/extensions/api.
@@ skipping 22 matching lines @@
 # First is default.
 GENERATORS = ['cpp', 'cpp-bundle', 'dart', 'ppapi']
 
 def GenerateSchema(generator,
                    filenames,
                    root,
                    destdir,
                    root_namespace,
                    dart_overrides_dir,
                    impl_dir):
-  schema_loader = SchemaLoader(
-      os.path.dirname(os.path.relpath(os.path.normpath(filenames[0]), root)),
-      os.path.dirname(filenames[0]))
   # Merge the source files into a single list of schemas.
   api_defs = []
   for filename in filenames:
     schema = os.path.normpath(filename)
+    schema_loader = SchemaLoader(
+        os.path.dirname(os.path.relpath(os.path.normpath(filename), root)),
+        os.path.dirname(filename))
     api_def = schema_loader.LoadSchema(os.path.split(schema)[1])
 
     # If compiling the C++ model code, delete 'nocompile' nodes.
     if generator == 'cpp':
       api_def = json_schema.DeleteNodes(api_def, 'nocompile')
     api_defs.extend(api_def)
 
   api_model = Model()
 
   # For single-schema compilation make sure that the first (i.e. only) schema
   # is the default one.
   default_namespace = None
 
+  # If we have files from multiple source paths, we'll use the common parent
+  # path as the source directory.
+  src_path = None
+
   # Load the actual namespaces into the model.
   for target_namespace, schema_filename in zip(api_defs, filenames):
     relpath = os.path.relpath(os.path.normpath(schema_filename), root)
     namespace = api_model.AddNamespace(target_namespace,
                                        relpath,
                                        include_compiler_options=True)
+
     if default_namespace is None:
       default_namespace = namespace
 
+    if src_path is None:
+      src_path = namespace.source_file_dir
+    else:
+      src_path = os.path.commonprefix((src_path, namespace.source_file_dir))
+
     path, filename = os.path.split(schema_filename)
     short_filename, extension = os.path.splitext(filename)
 
   # Construct the type generator with all the namespaces in this model.
   type_generator = CppTypeGenerator(api_model,
                                     schema_loader,
                                     default_namespace=default_namespace)
-
   if generator == 'cpp-bundle':
     cpp_bundle_generator = CppBundleGenerator(root,
                                               api_model,
                                               api_defs,
                                               type_generator,
                                               root_namespace,
-                                              namespace.source_file_dir,
+                                              src_path,
                                               impl_dir)
     generators = [
       ('generated_api.cc', cpp_bundle_generator.api_cc_generator),
       ('generated_api.h', cpp_bundle_generator.api_h_generator),
       ('generated_schemas.cc', cpp_bundle_generator.schemas_cc_generator),
       ('generated_schemas.h', cpp_bundle_generator.schemas_h_generator)
     ]
   elif generator == 'cpp':
     cpp_generator = CppGenerator(type_generator, root_namespace)
     generators = [
@@ skipping 11 matching lines @@
       (os.path.join('api', 'ppb_%s.idl' % namespace.unix_name),
        generator.idl_generator),
     ]
   else:
     raise Exception('Unrecognised generator %s' % generator)
 
   output_code = []
   for filename, generator in generators:
     code = generator.Generate(namespace).Render()
     if destdir:
-      with open(os.path.join(destdir, namespace.source_file_dir,
-          filename), 'w') as f:
+      output_dir = os.path.join(destdir, src_path)
+      if not os.path.exists(output_dir):
+        os.makedirs(output_dir)
+      with open(os.path.join(output_dir, filename), 'w') as f:
         f.write(code)
     output_code += [filename, '', code, '']
 
   return '\n'.join(output_code)
 
 
 if __name__ == '__main__':
   parser = optparse.OptionParser(
       description='Generates a C++ model of an API from JSON schema',
       usage='usage: %prog [option]... schema')
@@ skipping 22 matching lines @@
   if opts.generator != 'cpp-bundle' and len(filenames) > 1:
     # TODO(sashab): Could also just use filenames[0] here and not complain.
     raise Exception(
         "Unless in bundle mode, only one file can be specified at a time.")
 
   result = GenerateSchema(opts.generator, filenames, opts.root, opts.destdir,
                           opts.namespace, opts.dart_overrides_dir,
                           opts.impl_dir)
   if not opts.destdir:
     print result