PPAPI: Add new PPB_FileRef.MakeDirectory to support exclusive operation

ppapi/cpp/file_ref.cc

 // 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.
 
 #include "ppapi/cpp/file_ref.h"
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/cpp/directory_entry.h"
 #include "ppapi/cpp/file_system.h"
 #include "ppapi/cpp/module_impl.h"
 
 namespace pp {
 
 namespace {
 
 template <> const char* interface_name<PPB_FileRef_1_0>() {
   return PPB_FILEREF_INTERFACE_1_0;
 }
 
 template <> const char* interface_name<PPB_FileRef_1_1>() {
   return PPB_FILEREF_INTERFACE_1_1;
 }
 
+template <> const char* interface_name<PPB_FileRef_1_2>() {
+  return PPB_FILEREF_INTERFACE_1_2;
+}
+
 }  // namespace
 
 FileRef::FileRef(PP_Resource resource) : Resource(resource) {
 }
 
 FileRef::FileRef(PassRef, PP_Resource resource) : Resource(PASS_REF, resource) {
 }
 
 FileRef::FileRef(const FileSystem& file_system,
                  const char* path) {
   if (has_interface<PPB_FileRef_1_1>()) {
     PassRefFromConstructor(get_interface<PPB_FileRef_1_1>()->Create(
         file_system.pp_resource(), path));
   } else if (has_interface<PPB_FileRef_1_0>()) {
     PassRefFromConstructor(get_interface<PPB_FileRef_1_0>()->Create(
         file_system.pp_resource(), path));
   }
 }
 
 FileRef::FileRef(const FileRef& other)
     : Resource(other) {
 }
 
 PP_FileSystemType FileRef::GetFileSystemType() const {
+  if (has_interface<PPB_FileRef_1_2>())
+    return get_interface<PPB_FileRef_1_2>()->GetFileSystemType(pp_resource());
   if (has_interface<PPB_FileRef_1_1>())
     return get_interface<PPB_FileRef_1_1>()->GetFileSystemType(pp_resource());
   if (has_interface<PPB_FileRef_1_0>())
     return get_interface<PPB_FileRef_1_0>()->GetFileSystemType(pp_resource());
   return PP_FILESYSTEMTYPE_EXTERNAL;
 }
 
 Var FileRef::GetName() const {
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return Var(PASS_REF,
+               get_interface<PPB_FileRef_1_2>()->GetName(pp_resource()));
+  }
   if (has_interface<PPB_FileRef_1_1>()) {
     return Var(PASS_REF,
                get_interface<PPB_FileRef_1_1>()->GetName(pp_resource()));
   }
   if (has_interface<PPB_FileRef_1_0>()) {
     return Var(PASS_REF,
                get_interface<PPB_FileRef_1_0>()->GetName(pp_resource()));
   }
   return Var();
 }
 
 Var FileRef::GetPath() const {
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return Var(PASS_REF,
+               get_interface<PPB_FileRef_1_2>()->GetPath(pp_resource()));
+  }
   if (has_interface<PPB_FileRef_1_1>()) {
     return Var(PASS_REF,
                get_interface<PPB_FileRef_1_1>()->GetPath(pp_resource()));
   }
   if (has_interface<PPB_FileRef_1_0>()) {
     return Var(PASS_REF,
                get_interface<PPB_FileRef_1_0>()->GetPath(pp_resource()));
   }
   return Var();
 }
 
 FileRef FileRef::GetParent() const {
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return FileRef(PASS_REF,
+                   get_interface<PPB_FileRef_1_2>()->GetParent(pp_resource()));
+  }
   if (has_interface<PPB_FileRef_1_1>()) {
     return FileRef(PASS_REF,
                    get_interface<PPB_FileRef_1_1>()->GetParent(pp_resource()));
   }
   if (has_interface<PPB_FileRef_1_0>()) {
     return FileRef(PASS_REF,
                    get_interface<PPB_FileRef_1_0>()->GetParent(pp_resource()));
   }
   return FileRef();
 }
 
 int32_t FileRef::MakeDirectory(const CompletionCallback& cc) {
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return get_interface<PPB_FileRef_1_2>()->MakeDirectory(
+        pp_resource(),
+        PP_FALSE,  // make_ancestors
+        cc.pp_completion_callback());
+  }
   if (has_interface<PPB_FileRef_1_1>()) {
     return get_interface<PPB_FileRef_1_1>()->MakeDirectory(
         pp_resource(),
         PP_FALSE,  // make_ancestors
         cc.pp_completion_callback());
   }
   if (has_interface<PPB_FileRef_1_0>()) {
     return get_interface<PPB_FileRef_1_0>()->MakeDirectory(
         pp_resource(),
         PP_FALSE,  // make_ancestors
         cc.pp_completion_callback());
   }
   return cc.MayForce(PP_ERROR_NOINTERFACE);
 }
 
 int32_t FileRef::MakeDirectoryIncludingAncestors(
     const CompletionCallback& cc) {
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return get_interface<PPB_FileRef_1_2>()->MakeDirectory(
+        pp_resource(),
+        PP_TRUE,  // make_ancestors
+        cc.pp_completion_callback());
+  }
   if (has_interface<PPB_FileRef_1_1>()) {
     return get_interface<PPB_FileRef_1_1>()->MakeDirectory(
         pp_resource(),
         PP_TRUE,  // make_ancestors
         cc.pp_completion_callback());
   }
   if (has_interface<PPB_FileRef_1_0>()) {
     return get_interface<PPB_FileRef_1_0>()->MakeDirectory(
         pp_resource(),
         PP_TRUE,  // make_ancestors
         cc.pp_completion_callback());
   }
   return cc.MayForce(PP_ERROR_NOINTERFACE);
 }
 
+int32_t FileRef::MakeDirectoryExclusive(
+    PP_Bool make_ancestors,
+    const CompletionCallback& cc) {
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return get_interface<PPB_FileRef_1_2>()->MakeDirectoryExclusive(
+        pp_resource(),
+        make_ancestors,
+        cc.pp_completion_callback());
+  }
+  return cc.MayForce(PP_ERROR_NOINTERFACE);
+}
+
 int32_t FileRef::Touch(PP_Time last_access_time,
                        PP_Time last_modified_time,
                        const CompletionCallback& cc) {
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return get_interface<PPB_FileRef_1_2>()->Touch(
+        pp_resource(), last_access_time, last_modified_time,
+        cc.pp_completion_callback());
+  }
   if (has_interface<PPB_FileRef_1_1>()) {
     return get_interface<PPB_FileRef_1_1>()->Touch(
         pp_resource(), last_access_time, last_modified_time,
         cc.pp_completion_callback());
   }
   if (has_interface<PPB_FileRef_1_0>()) {
     return get_interface<PPB_FileRef_1_0>()->Touch(
         pp_resource(), last_access_time, last_modified_time,
         cc.pp_completion_callback());
   }
   return cc.MayForce(PP_ERROR_NOINTERFACE);
 }
 
 int32_t FileRef::Delete(const CompletionCallback& cc) {
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return get_interface<PPB_FileRef_1_2>()->Delete(
+        pp_resource(), cc.pp_completion_callback());
+  }
   if (has_interface<PPB_FileRef_1_1>()) {
     return get_interface<PPB_FileRef_1_1>()->Delete(
         pp_resource(), cc.pp_completion_callback());
   }
   if (has_interface<PPB_FileRef_1_0>()) {
     return get_interface<PPB_FileRef_1_0>()->Delete(
         pp_resource(), cc.pp_completion_callback());
   }
   return cc.MayForce(PP_ERROR_NOINTERFACE);
 }
 
 int32_t FileRef::Rename(const FileRef& new_file_ref,
                         const CompletionCallback& cc) {
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return get_interface<PPB_FileRef_1_2>()->Rename(
+        pp_resource(), new_file_ref.pp_resource(), cc.pp_completion_callback());
+  }
   if (has_interface<PPB_FileRef_1_1>()) {
     return get_interface<PPB_FileRef_1_1>()->Rename(
         pp_resource(), new_file_ref.pp_resource(), cc.pp_completion_callback());
   }
   if (has_interface<PPB_FileRef_1_0>()) {
     return get_interface<PPB_FileRef_1_0>()->Rename(
         pp_resource(), new_file_ref.pp_resource(), cc.pp_completion_callback());
   }
   return cc.MayForce(PP_ERROR_NOINTERFACE);
 }
 
 int32_t FileRef::Query(const CompletionCallbackWithOutput<PP_FileInfo>& cc) {
-  if (!has_interface<PPB_FileRef_1_1>())
-    return cc.MayForce(PP_ERROR_NOINTERFACE);
-  return get_interface<PPB_FileRef_1_1>()->Query(
-      pp_resource(), cc.output(), cc.pp_completion_callback());
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return get_interface<PPB_FileRef_1_2>()->Query(
+        pp_resource(), cc.output(), cc.pp_completion_callback());
+  }
+  if (has_interface<PPB_FileRef_1_1>()) {
+    return get_interface<PPB_FileRef_1_1>()->Query(
+        pp_resource(), cc.output(), cc.pp_completion_callback());
+  }
+  return cc.MayForce(PP_ERROR_NOINTERFACE);
 }
 
 int32_t FileRef::ReadDirectoryEntries(
     const CompletionCallbackWithOutput<std::vector<DirectoryEntry> >&
         callback) {
-  if (!has_interface<PPB_FileRef_1_1>())
-    return callback.MayForce(PP_ERROR_NOINTERFACE);
-  return get_interface<PPB_FileRef_1_1>()->ReadDirectoryEntries(
-      pp_resource(), callback.output(), callback.pp_completion_callback());
+  if (has_interface<PPB_FileRef_1_2>()) {
+    return get_interface<PPB_FileRef_1_2>()->ReadDirectoryEntries(
+        pp_resource(), callback.output(), callback.pp_completion_callback());
+  }
+  if (has_interface<PPB_FileRef_1_1>()) {
+    return get_interface<PPB_FileRef_1_1>()->ReadDirectoryEntries(
+        pp_resource(), callback.output(), callback.pp_completion_callback());
+  }
+  return callback.MayForce(PP_ERROR_NOINTERFACE);
 }
 
 }  // namespace pp