Morph CapabilityFilter into caps::Capabilities, which supports capability classes (yet unimplemente…

mojo/services/catalog/builder.cc

 // Copyright 2016 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.
 
 #include "mojo/services/catalog/builder.h"
 
 #include "base/values.h"
 #include "mojo/services/catalog/store.h"
+#include "mojo/shell/public/cpp/capabilities.h"
 #include "mojo/shell/public/cpp/names.h"
 
+// TODO(beng): this code should do better error handling instead of CHECKing so
+// much.
+
 namespace catalog {
 
-CapabilityFilter BuildCapabilityFilter(const base::DictionaryValue& value) {
-  CapabilityFilter filter;
+mojo::caps::CapabilitySpec BuildCapabilitiesV0(
+    const base::DictionaryValue& value) {
+  mojo::caps::CapabilitySpec capabilities;
   base::DictionaryValue::Iterator it(value);
   for (; !it.IsAtEnd(); it.Advance()) {
     const base::ListValue* values = nullptr;
     CHECK(it.value().GetAsList(&values));
-    AllowedInterfaces interfaces;
+    mojo::caps::CapabilityRequest spec;
     for (auto i = values->begin(); i != values->end(); ++i) {
-      std::string iface_name;
+      mojo::caps::Interface interface_name;
       const base::Value* v = *i;
-      CHECK(v->GetAsString(&iface_name));
-      interfaces.insert(iface_name);
+      CHECK(v->GetAsString(&interface_name));
+      spec.interfaces.insert(interface_name);
     }
-    filter[it.key()] = interfaces;
+    capabilities.required[it.key()] = spec;
   }
-  return filter;
+  return capabilities;
+}
+
+void ReadStringSet(const base::ListValue& list_value,
+                   std::set<std::string>* string_set) {
+  DCHECK(string_set);
+  for (auto i = list_value.begin(); i != list_value.end(); ++i) {
+    std::string value;
+    const base::Value* value_value = *i;
+    CHECK(value_value->GetAsString(&value));
+    string_set->insert(value);
+  }
+}
+
+void ReadStringSetFromValue(const base::Value& value,
+                            std::set<std::string>* string_set) {
+  const base::ListValue* list_value = nullptr;
+  CHECK(value.GetAsList(&list_value));
+  ReadStringSet(*list_value, string_set);
+}
+
+void ReadStringSetFromDictionary(const base::DictionaryValue& dictionary,
+                                 const std::string& key,
+                                 std::set<std::string>* string_set) {
+  const base::ListValue* list_value = nullptr;
+  if (dictionary.HasKey(key))
+    CHECK(dictionary.GetList(key, &list_value));
+  if (list_value)
+    ReadStringSet(*list_value, string_set);
+}
+
+mojo::caps::CapabilitySpec BuildCapabilitiesV1(
+    const base::DictionaryValue& value) {
+  mojo::caps::CapabilitySpec capabilities;
+
+  const base::DictionaryValue* provided_value = nullptr;
+  if (value.HasKey(Store::kCapabilities_ProvidedKey)) {
+    CHECK(value.GetDictionary(Store::kCapabilities_ProvidedKey,
+                              &provided_value));
+  }
+  if (provided_value) {
+    mojo::caps::CapabilityRequest provided;
+    base::DictionaryValue::Iterator it(*provided_value);
+    for(; !it.IsAtEnd(); it.Advance()) {
+      mojo::caps::Interfaces interfaces;
+      ReadStringSetFromValue(it.value(), &interfaces);
+      capabilities.provided[it.key()] = interfaces;
+    }
+  }
+
+  const base::DictionaryValue* required_value = nullptr;
+  if (value.HasKey(Store::kCapabilities_RequiredKey)) {
+    CHECK(value.GetDictionary(Store::kCapabilities_RequiredKey,
+                              &required_value));
+  }
+  if (required_value) {
+    base::DictionaryValue::Iterator it(*required_value);
+    for (; !it.IsAtEnd(); it.Advance()) {
+      mojo::caps::CapabilityRequest spec;
+      const base::DictionaryValue* entry_value = nullptr;
+      CHECK(it.value().GetAsDictionary(&entry_value));
+      ReadStringSetFromDictionary(
+          *entry_value, Store::kCapabilities_ClassesKey, &spec.classes);
+      ReadStringSetFromDictionary(
+          *entry_value, Store::kCapabilities_InterfacesKey, &spec.interfaces);
+      capabilities.required[it.key()] = spec;
+    }
+  }
+  return capabilities;
 }
 
 Entry BuildEntry(const base::DictionaryValue& value) {
   Entry entry;
+  int manifest_version = 0;
+  if (value.HasKey(Store::kManifestVersionKey))
+    CHECK(value.GetInteger(Store::kManifestVersionKey, &manifest_version));
   std::string name_string;
   CHECK(value.GetString(Store::kNameKey, &name_string));
   CHECK(mojo::IsValidName(name_string)) << "Invalid Name: " << name_string;
   entry.name = name_string;
   if (value.HasKey(Store::kQualifierKey)) {
     CHECK(value.GetString(Store::kQualifierKey, &entry.qualifier));
   } else {
     entry.qualifier = mojo::GetNamePath(name_string);
   }
   CHECK(value.GetString(Store::kDisplayNameKey, &entry.display_name));
   const base::DictionaryValue* capabilities = nullptr;
   CHECK(value.GetDictionary(Store::kCapabilitiesKey, &capabilities));
-  entry.capabilities = BuildCapabilityFilter(*capabilities);
-
+  if (manifest_version == 0)
+    entry.capabilities = BuildCapabilitiesV0(*capabilities);
+  else
+    entry.capabilities = BuildCapabilitiesV1(*capabilities);
   return entry;
 }
 
 void SerializeEntry(const Entry& entry, base::DictionaryValue** value) {
   *value = new base::DictionaryValue;
+  (*value)->SetInteger(Store::kManifestVersionKey, 1);
   (*value)->SetString(Store::kNameKey, entry.name);
   (*value)->SetString(Store::kDisplayNameKey, entry.display_name);
-  base::DictionaryValue* capabilities = new base::DictionaryValue;
-  for (const auto& pair : entry.capabilities) {
+  (*value)->SetString(Store::kQualifierKey, entry.qualifier);
+  scoped_ptr<base::DictionaryValue> spec(new base::DictionaryValue);
+
+  scoped_ptr<base::DictionaryValue> provided(new base::DictionaryValue);
+  for (const auto& i : entry.capabilities.provided) {
     scoped_ptr<base::ListValue> interfaces(new base::ListValue);
-    for (const auto& iface_name : pair.second)
-      interfaces->AppendString(iface_name);
-    capabilities->Set(pair.first, std::move(interfaces));
+    for (const auto& interface_name : i.second)
+      interfaces->AppendString(interface_name);
+    provided->Set(i.first, std::move(interfaces));
   }
-  (*value)->Set(Store::kCapabilitiesKey, make_scoped_ptr(capabilities));
+  spec->Set(Store::kCapabilities_ProvidedKey, std::move(provided));
+
+  scoped_ptr<base::DictionaryValue> required(new base::DictionaryValue);
+  for (const auto& i : entry.capabilities.required) {
+    base::DictionaryValue* request = new base::DictionaryValue;

[sky, 2016/03/09 21:33:15]

scoped_ptr<base::DictionaryValue>

+    scoped_ptr<base::ListValue> classes(new base::ListValue);
+    for (const auto& class_name : i.second.classes)
+      classes->AppendString(class_name);
+    request->Set(Store::kCapabilities_ClassesKey, std::move(classes));
+    scoped_ptr<base::ListValue> interfaces(new base::ListValue);
+    for (const auto& interface_name : i.second.interfaces)
+      interfaces->AppendString(interface_name);
+    request->Set(Store::kCapabilities_InterfacesKey, std::move(interfaces));
+    required->Set(i.first, std::move(request));
+  }
+  spec->Set(Store::kCapabilities_RequiredKey, std::move(required));
+
+  (*value)->Set(Store::kCapabilitiesKey, std::move(spec));
 }
 
 }  // namespace catalog