Refactor Input/Output file to use const char* instead of standard string, and to use parent_folder and file_name for input and output files. This also incorporates the move from nearby_connections to nearby.

PiperOrigin-RevId: 418002199

cpp/platform/public/BUILD

@@ -29,6 +29,7 @@ cc_library(
         "cancelable_alarm.h",
         "cancellable_task.h",
         "condition_variable.h",
+        "core_config.h",
         "count_down_latch.h",
         "crypto.h",
         "file.h",

cpp/platform/public/file.cc

@@ -17,19 +17,16 @@
 namespace location {
 namespace nearby {
 
-InputFile::InputFile(const char* file_path)
-    : impl_(Platform::CreateInputFile(file_path)) {}
-
+InputFile::InputFile(PayloadId payload_id, std::int64_t size)
+    : impl_(Platform::CreateInputFile(payload_id, size)), id_(payload_id) {}
 InputFile::~InputFile() = default;
-InputFile::InputFile(InputFile&& other) noexcept {
-  impl_ = std::move(other.impl_);
-}
+InputFile::InputFile(InputFile&&) noexcept = default;
 InputFile& InputFile::operator=(InputFile&&) noexcept = default;
 
 // Reads up to size bytes and returns as a ByteArray object wrapped by
 // ExceptionOr.
 // Returns Exception::kIo on error, or end of file.
-ExceptionOr<ByteArray> InputFile::Read(std::int64_t size) const {
+ExceptionOr<ByteArray> InputFile::Read(std::int64_t size) {
   return impl_->Read(size);
 }
 
@@ -39,13 +36,13 @@ std::string InputFile::GetFilePath() const { return impl_->GetFilePath(); }
 // Returns total size of this file in bytes.
 std::int64_t InputFile::GetTotalSize() const { return impl_->GetTotalSize(); }
 
-ExceptionOr<size_t> InputFile::Skip(size_t offset) const {
+ExceptionOr<size_t> InputFile::Skip(size_t offset) {
   return impl_->Skip(offset);
 }
 
 // Disallows further reads from the file and frees system resources,
 // associated with it.
-Exception InputFile::Close() const { return impl_->Close(); }
+Exception InputFile::Close() { return impl_->Close(); }
 
 // Returns a handle to the underlying input stream.
 //
@@ -54,10 +51,13 @@ Exception InputFile::Close() const { return impl_->Close(); }
 // Side effects of any non-const operation invoked for InputFile (such as
 // Read, or Close will be observable through InputStream& handle, and vice
 // versa.
-const InputStream& InputFile::GetInputStream() const { return *impl_; }
+InputStream& InputFile::GetInputStream() { return *impl_; }
 
-OutputFile::OutputFile(const char* file_path)
-    : impl_(Platform::CreateOutputFile(file_path)) {}
+// Returns payload id of this file. The closest "file" equivalent is inode.
+PayloadId InputFile::GetPayloadId() const { return id_; }
+
+OutputFile::OutputFile(PayloadId payload_id)
+    : impl_(Platform::CreateOutputFile(payload_id)), id_(payload_id) {}
 OutputFile::~OutputFile() = default;
 OutputFile::OutputFile(OutputFile&&) noexcept = default;
 OutputFile& OutputFile::operator=(OutputFile&&) noexcept = default;
@@ -85,5 +85,8 @@ Exception OutputFile::Close() { return impl_->Close(); }
 // versa.
 OutputStream& OutputFile::GetOutputStream() { return *impl_; }
 
+// Returns payload id of this file. The closest "file" equivalent is inode.
+PayloadId OutputFile::GetPayloadId() const { return id_; }
+
 }  // namespace nearby
 }  // namespace location

cpp/platform/public/file.h

@@ -23,10 +23,10 @@
 #include "platform/api/output_file.h"
 #include "platform/api/platform.h"
 #include "platform/base/byte_array.h"
-#include "platform/base/core_config.h"
 #include "platform/base/exception.h"
 #include "platform/base/input_stream.h"
 #include "platform/base/output_stream.h"
+#include "platform/public/core_config.h"
 
 namespace location {
 namespace nearby {
@@ -34,7 +34,7 @@ namespace nearby {
 class DLL_API InputFile final {
  public:
   using Platform = api::ImplementationPlatform;
-  InputFile(const char* file_path);
+  InputFile(PayloadId payload_id, std::int64_t size);
   ~InputFile();
   InputFile(InputFile&&) noexcept;
   InputFile& operator=(InputFile&&) noexcept;
@@ -42,7 +42,7 @@ class DLL_API InputFile final {
   // Reads up to size bytes and returns as a ByteArray object wrapped by
   // ExceptionOr.
   // Returns Exception::kIo on error, or end of file.
-  ExceptionOr<ByteArray> Read(std::int64_t size) const;
+  ExceptionOr<ByteArray> Read(std::int64_t size);
 
   // Returns a string that uniqely identifies this file.
   std::string GetFilePath() const;
@@ -50,11 +50,11 @@ class DLL_API InputFile final {
   // Returns total size of this file in bytes.
   std::int64_t GetTotalSize() const;
 
-  ExceptionOr<size_t> Skip(size_t offset) const;
+  ExceptionOr<size_t> Skip(size_t offset);
 
   // Disallows further reads from the file and frees system resources,
   // associated with it.
-  Exception Close() const;
+  Exception Close();
 
   // Returns a handle to the underlying input stream.
   //
@@ -63,16 +63,20 @@ class DLL_API InputFile final {
   // Side effects of any non-const operation invoked for InputFile (such as
   // Read, or Close will be observable through InputStream& handle, and vice
   // versa.
-  const InputStream& GetInputStream() const;
+  InputStream& GetInputStream();
+
+  // Returns payload id of this file. The closest "file" equivalent is inode.
+  PayloadId GetPayloadId() const;
 
  private:
   std::unique_ptr<api::InputFile> impl_;
+  PayloadId id_;
 };
 
 class DLL_API OutputFile final {
  public:
   using Platform = api::ImplementationPlatform;
-  explicit OutputFile(const char* file_path);
+  explicit OutputFile(PayloadId payload_id);
   ~OutputFile();
   OutputFile(OutputFile&&) noexcept;
   OutputFile& operator=(OutputFile&&) noexcept;
@@ -98,8 +102,12 @@ class DLL_API OutputFile final {
   // versa.
   OutputStream& GetOutputStream();
 
+  // Returns payload id of this file. The closest "file" equivalent is inode.
+  PayloadId GetPayloadId() const;
+
  private:
   std::unique_ptr<api::OutputFile> impl_;
+  PayloadId id_;
 };
 
 }  // namespace nearby