blob: 70571e399efcf87b7ab1245c0773f74e31d825e9 [file] [log] [blame]
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "bin/file.h"
#include <stdio.h>
#include "bin/builtin.h"
#include "bin/dartutils.h"
#include "bin/io_buffer.h"
#include "bin/namespace.h"
#include "bin/utils.h"
#include "include/bin/dart_io_api.h"
#include "include/dart_api.h"
#include "include/dart_tools_api.h"
#include "platform/globals.h"
namespace dart {
namespace bin {
static constexpr int kFileNativeFieldIndex = 0;
#if !defined(PRODUCT)
static bool IsFile(Dart_Handle file_obj) {
Dart_Handle file_type = ThrowIfError(
DartUtils::GetDartType("dart:io", "_RandomAccessFileOpsImpl"));
bool isinstance = false;
ThrowIfError(Dart_ObjectIsType(file_obj, file_type, &isinstance));
return isinstance;
}
#endif
// The file pointer has been passed into Dart as an intptr_t and it is safe
// to pull it out of Dart as a 64-bit integer, cast it to an intptr_t and
// from there to a File pointer.
static File* GetFile(Dart_NativeArguments args) {
File* file;
Dart_Handle dart_this = ThrowIfError(Dart_GetNativeArgument(args, 0));
DEBUG_ASSERT(IsFile(dart_this));
Dart_Handle result = Dart_GetNativeInstanceField(
dart_this, kFileNativeFieldIndex, reinterpret_cast<intptr_t*>(&file));
ASSERT(!Dart_IsError(result));
if (file == nullptr) {
Dart_PropagateError(Dart_NewUnhandledExceptionError(
DartUtils::NewInternalError("No native peer")));
}
return file;
}
static void SetFile(Dart_Handle dart_this, intptr_t file_pointer) {
DEBUG_ASSERT(IsFile(dart_this));
Dart_Handle result = Dart_SetNativeInstanceField(
dart_this, kFileNativeFieldIndex, file_pointer);
ThrowIfError(result);
}
void FUNCTION_NAME(File_GetPointer)(Dart_NativeArguments args) {
File* file = GetFile(args);
// If the file is already closed, GetFile() will return nullptr.
if (file != nullptr) {
// Increment file's reference count. File_GetPointer() should only be called
// when we are about to send the File* to the IO Service.
file->Retain();
}
intptr_t file_pointer = reinterpret_cast<intptr_t>(file);
Dart_SetIntegerReturnValue(args, file_pointer);
}
void FUNCTION_NAME(File_GetFD)(Dart_NativeArguments args) {
Dart_SetIntegerReturnValue(args, GetFile(args)->GetFD());
}
static void ReleaseFile(void* isolate_callback_data, void* peer) {
File* file = reinterpret_cast<File*>(peer);
file->Release();
}
void FUNCTION_NAME(File_SetPointer)(Dart_NativeArguments args) {
Dart_Handle dart_this = ThrowIfError(Dart_GetNativeArgument(args, 0));
intptr_t file_pointer = DartUtils::GetNativeIntptrArgument(args, 1);
File* file = reinterpret_cast<File*>(file_pointer);
Dart_FinalizableHandle handle = Dart_NewFinalizableHandle(
dart_this, reinterpret_cast<void*>(file), sizeof(*file), ReleaseFile);
file->SetFinalizableHandle(handle);
SetFile(dart_this, file_pointer);
}
void FUNCTION_NAME(File_Open)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* filename = DartUtils::GetNativeTypedDataArgument(args, 1);
int64_t mode = DartUtils::GetNativeIntegerArgument(args, 2);
File::DartFileOpenMode dart_file_mode =
static_cast<File::DartFileOpenMode>(mode);
File::FileOpenMode file_mode = File::DartModeToFileMode(dart_file_mode);
// Check that the file exists before opening it only for
// reading. This is to prevent the opening of directories as
// files. Directories can be opened for reading using the posix
// 'open' call.
File* file = File::Open(namespc, filename, file_mode);
if (file != nullptr) {
Dart_SetIntegerReturnValue(args, reinterpret_cast<intptr_t>(file));
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_Exists)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* filename = DartUtils::GetNativeTypedDataArgument(args, 1);
bool exists = File::Exists(namespc, filename);
Dart_SetBooleanReturnValue(args, exists);
}
void FUNCTION_NAME(File_Close)(Dart_NativeArguments args) {
// TODO(zra): The bots are hitting a crash in this function, so we include
// some checks here that are normally only in a Debug build. When the crash
// is gone, this can go back to using GetFile and SetFile.
Dart_Handle dart_this = ThrowIfError(Dart_GetNativeArgument(args, 0));
#if !defined(PRODUCT)
if (!IsFile(dart_this)) {
Dart_PropagateError(DartUtils::NewInternalError(
"File_Close expects the receiver to be a _RandomAccessFileOpsImpl."));
}
#endif
File* file;
ThrowIfError(Dart_GetNativeInstanceField(dart_this, kFileNativeFieldIndex,
reinterpret_cast<intptr_t*>(&file)));
if (file == nullptr) {
Dart_SetIntegerReturnValue(args, -1);
return;
}
file->Close();
file->DeleteFinalizableHandle(Dart_CurrentIsolate(), dart_this);
file->Release();
ThrowIfError(
Dart_SetNativeInstanceField(dart_this, kFileNativeFieldIndex, 0));
Dart_SetIntegerReturnValue(args, 0);
}
void FUNCTION_NAME(File_ReadByte)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
uint8_t buffer;
int64_t bytes_read = file->Read(reinterpret_cast<void*>(&buffer), 1);
if (bytes_read == 1) {
Dart_SetIntegerReturnValue(args, buffer);
} else if (bytes_read == 0) {
Dart_SetIntegerReturnValue(args, -1);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_WriteByte)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
int64_t byte = 0;
if (DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 1), &byte)) {
uint8_t buffer = static_cast<uint8_t>(byte & 0xff);
bool success = file->WriteFully(reinterpret_cast<void*>(&buffer), 1);
if (success) {
Dart_SetIntegerReturnValue(args, 1);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
} else {
OSError os_error(-1, "Invalid argument", OSError::kUnknown);
Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
}
}
void FUNCTION_NAME(File_Read)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
Dart_Handle length_object = Dart_GetNativeArgument(args, 1);
int64_t length = 0;
if (!DartUtils::GetInt64Value(length_object, &length) || (length < 0)) {
OSError os_error(-1, "Invalid argument", OSError::kUnknown);
Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
return;
}
uint8_t* buffer = nullptr;
Dart_Handle external_array = IOBuffer::Allocate(length, &buffer);
if (Dart_IsNull(external_array)) {
OSError os_error(-1, "Failed to allocate buffer", OSError::kUnknown);
Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
return;
}
int64_t bytes_read = file->Read(reinterpret_cast<void*>(buffer), length);
if (bytes_read < 0) {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
return;
}
if (bytes_read < length) {
const int kNumArgs = 3;
Dart_Handle dart_args[kNumArgs];
dart_args[0] = external_array;
dart_args[1] = Dart_NewInteger(0);
dart_args[2] = Dart_NewInteger(bytes_read);
// TODO(sgjesse): Cache the _makeUint8ListView function somewhere.
Dart_Handle io_lib = Dart_LookupLibrary(DartUtils::NewString("dart:io"));
ThrowIfError(io_lib);
Dart_Handle array_view =
Dart_Invoke(io_lib, DartUtils::NewString("_makeUint8ListView"),
kNumArgs, dart_args);
Dart_SetReturnValue(args, array_view);
} else {
Dart_SetReturnValue(args, external_array);
}
}
void FUNCTION_NAME(File_ReadInto)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
Dart_Handle buffer_obj = Dart_GetNativeArgument(args, 1);
ASSERT(Dart_IsList(buffer_obj));
// start and end arguments are checked in Dart code to be
// integers and have the property that end <=
// list.length. Therefore, it is safe to extract their value as
// intptr_t.
intptr_t start = DartUtils::GetNativeIntptrArgument(args, 2);
intptr_t end = DartUtils::GetNativeIntptrArgument(args, 3);
intptr_t length = end - start;
intptr_t array_len = 0;
Dart_Handle result = Dart_ListLength(buffer_obj, &array_len);
ThrowIfError(result);
ASSERT(end <= array_len);
uint8_t* buffer;
bool is_byte_data = false;
if (Dart_IsTypedData(buffer_obj)) {
// Avoid a memory copy if the input List<int> is an UInt8List.
Dart_TypedData_Type data_type;
intptr_t bytes_count;
ThrowIfError(Dart_TypedDataAcquireData(buffer_obj, &data_type,
reinterpret_cast<void**>(&buffer),
&bytes_count));
if (data_type == Dart_TypedData_kUint8) {
is_byte_data = true;
buffer += start;
ASSERT(bytes_count == array_len);
} else {
ThrowIfError(Dart_TypedDataReleaseData(buffer_obj));
}
}
if (!is_byte_data) {
buffer = Dart_ScopeAllocate(length);
}
int64_t bytes_read = file->Read(reinterpret_cast<void*>(buffer), length);
OSError* os_error = new OSError(); // capture error if any
if (is_byte_data) {
Dart_Handle handle = Dart_TypedDataReleaseData(buffer_obj);
if (Dart_IsError(handle)) {
delete os_error;
Dart_PropagateError(handle);
}
}
if (bytes_read >= 0) {
if (!is_byte_data) {
Dart_Handle handle =
Dart_ListSetAsBytes(buffer_obj, start, buffer, bytes_read);
if (Dart_IsError(handle)) {
delete os_error;
Dart_PropagateError(handle);
}
}
Dart_SetIntegerReturnValue(args, bytes_read);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError(os_error));
}
delete os_error;
}
void FUNCTION_NAME(File_WriteFrom)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
Dart_Handle buffer_obj = Dart_GetNativeArgument(args, 1);
// Offset and length arguments are checked in Dart code to be
// integers and have the property that (offset + length) <=
// list.length. Therefore, it is safe to extract their value as
// intptr_t.
intptr_t start = DartUtils::GetNativeIntptrArgument(args, 2);
intptr_t end = DartUtils::GetNativeIntptrArgument(args, 3);
// The buffer object passed in has to be an Int8List or Uint8List object.
// Acquire a direct pointer to the data area of the buffer object.
Dart_TypedData_Type type;
intptr_t length = end - start;
intptr_t buffer_len = 0;
void* buffer = nullptr;
Dart_Handle result =
Dart_TypedDataAcquireData(buffer_obj, &type, &buffer, &buffer_len);
ThrowIfError(result);
ASSERT(type == Dart_TypedData_kUint8 || type == Dart_TypedData_kInt8);
ASSERT(end <= buffer_len);
ASSERT(buffer != nullptr);
// Write all the data out into the file.
char* byte_buffer = reinterpret_cast<char*>(buffer);
bool success = file->WriteFully(byte_buffer + start, length);
OSError* os_error = new OSError(); // capture error if any
// Release the direct pointer acquired above.
result = Dart_TypedDataReleaseData(buffer_obj);
if (Dart_IsError(result)) {
delete os_error;
Dart_PropagateError(result);
}
if (!success) {
Dart_SetReturnValue(args, DartUtils::NewDartOSError(os_error));
} else {
Dart_SetReturnValue(args, Dart_Null());
}
delete os_error;
}
void FUNCTION_NAME(File_Position)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
intptr_t return_value = file->Position();
if (return_value >= 0) {
Dart_SetIntegerReturnValue(args, return_value);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_SetPosition)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
int64_t position = 0;
if (DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 1), &position)) {
if (file->SetPosition(position)) {
Dart_SetBooleanReturnValue(args, true);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
} else {
OSError os_error(-1, "Invalid argument", OSError::kUnknown);
Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
}
}
void FUNCTION_NAME(File_Truncate)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
int64_t length = 0;
if (DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 1), &length)) {
if (file->Truncate(length)) {
Dart_SetBooleanReturnValue(args, true);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
} else {
OSError os_error(-1, "Invalid argument", OSError::kUnknown);
Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
}
}
void FUNCTION_NAME(File_Length)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
int64_t return_value = file->Length();
if (return_value >= 0) {
Dart_SetIntegerReturnValue(args, return_value);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_LengthFromPath)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* path = DartUtils::GetNativeTypedDataArgument(args, 1);
int64_t return_value = File::LengthFromPath(namespc, path);
if (return_value >= 0) {
Dart_SetIntegerReturnValue(args, return_value);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_LastModified)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* raw_name = DartUtils::GetNativeTypedDataArgument(args, 1);
int64_t return_value = File::LastModified(namespc, raw_name);
if (return_value >= 0) {
Dart_SetIntegerReturnValue(args, return_value * kMillisecondsPerSecond);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_SetLastModified)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
int64_t millis;
if (!DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 2), &millis)) {
Dart_ThrowException(DartUtils::NewDartArgumentError(
"The second argument must be a 64-bit int."));
}
const char* name = DartUtils::GetNativeTypedDataArgument(args, 1);
bool result = File::SetLastModified(namespc, name, millis);
if (!result) {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_LastAccessed)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* name = DartUtils::GetNativeTypedDataArgument(args, 1);
int64_t return_value = File::LastAccessed(namespc, name);
if (return_value >= 0) {
Dart_SetIntegerReturnValue(args, return_value * kMillisecondsPerSecond);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_SetLastAccessed)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
int64_t millis;
if (!DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 2), &millis)) {
Dart_ThrowException(DartUtils::NewDartArgumentError(
"The second argument must be a 64-bit int."));
}
const char* name = DartUtils::GetNativeTypedDataArgument(args, 1);
bool result = File::SetLastAccessed(namespc, name, millis);
if (!result) {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_Flush)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
if (file->Flush()) {
Dart_SetBooleanReturnValue(args, true);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_Lock)(Dart_NativeArguments args) {
File* file = GetFile(args);
ASSERT(file != nullptr);
int64_t lock;
int64_t start;
int64_t end;
if (DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 1), &lock) &&
DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 2), &start) &&
DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 3), &end)) {
if ((lock >= File::kLockMin) && (lock <= File::kLockMax) && (start >= 0) &&
(end == -1 || end > start)) {
if (file->Lock(static_cast<File::LockType>(lock), start, end)) {
Dart_SetBooleanReturnValue(args, true);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
return;
}
}
OSError os_error(-1, "Invalid argument", OSError::kUnknown);
Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
}
void FUNCTION_NAME(File_Create)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
Dart_Handle exclusive_handle = Dart_GetNativeArgument(args, 2);
const char* path = DartUtils::GetNativeTypedDataArgument(args, 1);
bool exclusive = DartUtils::GetBooleanValue(exclusive_handle);
bool result = File::Create(namespc, path, exclusive);
if (result) {
Dart_SetBooleanReturnValue(args, result);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_CreateLink)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* name = DartUtils::GetNativeTypedDataArgument(args, 1);
const char* target = DartUtils::GetNativeStringArgument(args, 2);
bool result = File::CreateLink(namespc, name, target);
if (!result) {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_CreatePipe)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
File* readPipe;
File* writePipe;
if (File::CreatePipe(namespc, &readPipe, &writePipe)) {
Dart_Handle pipes = ThrowIfError(Dart_NewList(2));
Dart_Handle readHandle =
ThrowIfError(Dart_NewInteger(reinterpret_cast<intptr_t>(readPipe)));
Dart_Handle writeHandle =
ThrowIfError(Dart_NewInteger(reinterpret_cast<intptr_t>(writePipe)));
ThrowIfError(Dart_ListSetAt(pipes, 0, readHandle));
ThrowIfError(Dart_ListSetAt(pipes, 1, writeHandle));
Dart_SetReturnValue(args, pipes);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_LinkTarget)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* name = DartUtils::GetNativeTypedDataArgument(args, 1);
const char* target = File::LinkTarget(namespc, name);
if (target == nullptr) {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
} else {
Dart_Handle str = ThrowIfError(DartUtils::NewString(target));
Dart_SetReturnValue(args, str);
}
}
void FUNCTION_NAME(File_Delete)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* path = DartUtils::GetNativeTypedDataArgument(args, 1);
bool result = File::Delete(namespc, path);
if (result) {
Dart_SetBooleanReturnValue(args, result);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_DeleteLink)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* path = DartUtils::GetNativeTypedDataArgument(args, 1);
bool result = File::DeleteLink(namespc, path);
if (result) {
Dart_SetBooleanReturnValue(args, result);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_Rename)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* old_path = DartUtils::GetNativeTypedDataArgument(args, 1);
const char* new_path = DartUtils::GetNativeStringArgument(args, 2);
bool result = File::Rename(namespc, old_path, new_path);
if (result) {
Dart_SetBooleanReturnValue(args, result);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_RenameLink)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* old_path = DartUtils::GetNativeTypedDataArgument(args, 1);
const char* new_path = DartUtils::GetNativeStringArgument(args, 2);
bool result = File::RenameLink(namespc, old_path, new_path);
if (result) {
Dart_SetBooleanReturnValue(args, result);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_Copy)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* old_path = DartUtils::GetNativeTypedDataArgument(args, 1);
const char* new_path = DartUtils::GetNativeStringArgument(args, 2);
bool result = File::Copy(namespc, old_path, new_path);
if (result) {
Dart_SetBooleanReturnValue(args, result);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_ResolveSymbolicLinks)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* path = nullptr;
const char* str = DartUtils::GetNativeTypedDataArgument(args, 1);
path = File::GetCanonicalPath(namespc, str);
if (path != nullptr) {
Dart_Handle str = ThrowIfError(DartUtils::NewString(path));
Dart_SetReturnValue(args, str);
} else {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
}
}
void FUNCTION_NAME(File_OpenStdio)(Dart_NativeArguments args) {
const int64_t fd = DartUtils::GetNativeIntegerArgument(args, 0);
File* file = File::OpenStdio(static_cast<int>(fd));
Dart_SetIntegerReturnValue(args, reinterpret_cast<intptr_t>(file));
}
void FUNCTION_NAME(File_GetStdioHandleType)(Dart_NativeArguments args) {
int64_t fd = DartUtils::GetNativeIntegerArgument(args, 0);
ASSERT((fd == STDIN_FILENO) || (fd == STDOUT_FILENO) ||
(fd == STDERR_FILENO));
File::StdioHandleType type = File::GetStdioHandleType(static_cast<int>(fd));
if (type == File::StdioHandleType::kTypeError) {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
} else {
Dart_SetIntegerReturnValue(args, type);
}
}
void FUNCTION_NAME(File_GetType)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* path = DartUtils::GetNativeTypedDataArgument(args, 1);
bool follow_links = DartUtils::GetNativeBooleanArgument(args, 2);
File::Type type = File::GetType(namespc, path, follow_links);
Dart_SetIntegerReturnValue(args, static_cast<int>(type));
}
void FUNCTION_NAME(File_Stat)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* path = DartUtils::GetNativeStringArgument(args, 1);
int64_t stat_data[File::kStatSize];
File::Stat(namespc, path, stat_data);
if (stat_data[File::kType] == File::kDoesNotExist) {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
return;
}
Dart_Handle returned_data =
Dart_NewTypedData(Dart_TypedData_kInt64, File::kStatSize);
ThrowIfError(returned_data);
Dart_TypedData_Type data_type_unused;
void* data_location;
intptr_t data_length_unused;
Dart_Handle status = Dart_TypedDataAcquireData(
returned_data, &data_type_unused, &data_location, &data_length_unused);
ThrowIfError(status);
memmove(data_location, stat_data, File::kStatSize * sizeof(int64_t));
status = Dart_TypedDataReleaseData(returned_data);
ThrowIfError(status);
Dart_SetReturnValue(args, returned_data);
}
void FUNCTION_NAME(File_AreIdentical)(Dart_NativeArguments args) {
Namespace* namespc = Namespace::GetNamespace(args, 0);
const char* path_1 = DartUtils::GetNativeStringArgument(args, 1);
const char* path_2 = DartUtils::GetNativeStringArgument(args, 2);
File::Identical result = File::AreIdentical(namespc, path_1, namespc, path_2);
if (result == File::kError) {
Dart_SetReturnValue(args, DartUtils::NewDartOSError());
} else {
Dart_SetBooleanReturnValue(args, result == File::kIdentical);
}
}
#define IS_SEPARATOR(c) ((c) == '/' || (c) == 0)
// Checks that if we increment this index forward, we'll still have enough space
// for a null terminator within PATH_MAX bytes.
#define CHECK_CAN_INCREMENT(i) \
if ((i) + 1 >= outlen) { \
return -1; \
}
intptr_t File::CleanUnixPath(const char* in, char* out, intptr_t outlen) {
if (in[0] == 0) {
snprintf(out, outlen, ".");
return 1;
}
const bool rooted = (in[0] == '/');
intptr_t in_index = 0; // Index of the next byte to read.
intptr_t out_index = 0; // Index of the next byte to write.
if (rooted) {
out[out_index++] = '/';
in_index++;
}
// The output index at which '..' cannot be cleaned further.
intptr_t dotdot = out_index;
while (in[in_index] != 0) {
if (in[in_index] == '/') {
// 1. Reduce multiple slashes to a single slash.
CHECK_CAN_INCREMENT(in_index);
in_index++;
} else if ((in[in_index] == '.') && IS_SEPARATOR(in[in_index + 1])) {
// 2. Eliminate . path name elements (the current directory).
CHECK_CAN_INCREMENT(in_index);
in_index++;
} else if ((in[in_index] == '.') && (in[in_index + 1] == '.') &&
IS_SEPARATOR(in[in_index + 2])) {
CHECK_CAN_INCREMENT(in_index + 1);
in_index += 2;
if (out_index > dotdot) {
// 3. Eliminate .. path elements (the parent directory) and the element
// that precedes them.
out_index--;
while ((out_index > dotdot) && (out[out_index] != '/')) {
out_index--;
}
} else if (rooted) {
// 4. Eliminate .. elements that begin a rooted path, that is, replace
// /.. by / at the beginning of a path.
continue;
} else if (!rooted) {
if (out_index > 0) {
out[out_index++] = '/';
}
// 5. Leave intact .. elements that begin a non-rooted path.
out[out_index++] = '.';
out[out_index++] = '.';
dotdot = out_index;
}
} else {
if ((rooted && out_index != 1) || (!rooted && out_index != 0)) {
// Add '/' before normal path component, for non-root components.
out[out_index++] = '/';
}
while (!IS_SEPARATOR(in[in_index])) {
CHECK_CAN_INCREMENT(in_index);
out[out_index++] = in[in_index++];
}
}
}
if (out_index == 0) {
snprintf(out, outlen, ".");
return 1;
}
// Append null character.
out[out_index] = 0;
return out_index;
}
static int64_t CObjectInt32OrInt64ToInt64(CObject* cobject) {
ASSERT(cobject->IsInt32OrInt64());
int64_t result;
if (cobject->IsInt32()) {
CObjectInt32 value(cobject);
result = value.Value();
} else {
CObjectInt64 value(cobject);
result = value.Value();
}
return result;
}
static File* CObjectToFilePointer(CObject* cobject) {
CObjectIntptr value(cobject);
return reinterpret_cast<File*>(value.Value());
}
static Namespace* CObjectToNamespacePointer(CObject* cobject) {
CObjectIntptr value(cobject);
return reinterpret_cast<Namespace*>(value.Value());
}
CObject* File::ExistsRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 2) || !request[1]->IsUint8Array()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array filename(request[1]);
return CObject::Bool(
File::Exists(namespc, reinterpret_cast<const char*>(filename.Buffer())));
}
CObject* File::CreateRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 3) || !request[1]->IsUint8Array() ||
!request[2]->IsBool()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array filename(request[1]);
CObjectBool exclusive(request[2]);
return File::Create(namespc, reinterpret_cast<const char*>(filename.Buffer()),
exclusive.Value())
? CObject::True()
: CObject::NewOSError();
}
CObject* File::CreatePipeRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
File* readPipe;
File* writePipe;
if (!CreatePipe(namespc, &readPipe, &writePipe)) {
return CObject::NewOSError();
}
CObjectArray* pipes = new CObjectArray(CObject::NewArray(2));
CObjectNativePointer* readHandle = new CObjectNativePointer(
CObject::NewNativePointer(reinterpret_cast<intptr_t>(readPipe),
sizeof(*readPipe), ReleaseFile));
CObjectNativePointer* writeHandle = new CObjectNativePointer(
CObject::NewNativePointer(reinterpret_cast<intptr_t>(writePipe),
sizeof(*writePipe), ReleaseFile));
pipes->SetAt(0, readHandle);
pipes->SetAt(1, writeHandle);
return pipes;
}
CObject* File::OpenRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 3) || !request[1]->IsUint8Array() ||
!request[2]->IsInt32()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array filename(request[1]);
CObjectInt32 mode(request[2]);
File::DartFileOpenMode dart_file_mode =
static_cast<File::DartFileOpenMode>(mode.Value());
File::FileOpenMode file_mode = File::DartModeToFileMode(dart_file_mode);
File* file = File::Open(
namespc, reinterpret_cast<const char*>(filename.Buffer()), file_mode);
if (file == nullptr) {
return CObject::NewOSError();
}
return new CObjectNativePointer(CObject::NewNativePointer(
reinterpret_cast<intptr_t>(file), sizeof(*file), ReleaseFile));
}
CObject* File::DeleteRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::False();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 2) || !request[1]->IsUint8Array()) {
return CObject::False();
}
CObjectUint8Array filename(request[1]);
return File::Delete(namespc, reinterpret_cast<const char*>(filename.Buffer()))
? CObject::True()
: CObject::NewOSError();
}
CObject* File::RenameRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 3) || !request[1]->IsUint8Array() ||
!request[2]->IsString()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array old_path(request[1]);
CObjectString new_path(request[2]);
return File::Rename(namespc, reinterpret_cast<const char*>(old_path.Buffer()),
new_path.CString())
? CObject::True()
: CObject::NewOSError();
}
CObject* File::CopyRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 3) || !request[1]->IsUint8Array() ||
!request[2]->IsString()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array old_path(request[1]);
CObjectString new_path(request[2]);
return File::Copy(namespc, reinterpret_cast<const char*>(old_path.Buffer()),
new_path.CString())
? CObject::True()
: CObject::NewOSError();
}
CObject* File::ResolveSymbolicLinksRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 2) || !request[1]->IsUint8Array()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array filename(request[1]);
const char* result = File::GetCanonicalPath(
namespc, reinterpret_cast<const char*>(filename.Buffer()));
if (result == nullptr) {
return CObject::NewOSError();
}
return new CObjectString(CObject::NewString(result));
}
CObject* File::CloseRequest(const CObjectArray& request) {
if ((request.Length() != 1) || !request[0]->IsIntptr()) {
return new CObjectIntptr(CObject::NewIntptr(-1));
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
// We have retained a reference to the file here. Therefore the file's
// destructor can't be running. Since no further requests are dispatched by
// the Dart code after an async close call, this Close() can't be racing
// with any other call on the file. We don't do an extra Release(), and we
// don't delete the weak persistent handle. The file is closed here, but the
// memory will be cleaned up when the finalizer runs.
ASSERT(!file->IsClosed());
file->Close();
return new CObjectIntptr(CObject::NewIntptr(0));
}
CObject* File::PositionRequest(const CObjectArray& request) {
if ((request.Length() != 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if (file->IsClosed()) {
return CObject::FileClosedError();
}
const intptr_t return_value = file->Position();
if (return_value < 0) {
return CObject::NewOSError();
}
return new CObjectIntptr(CObject::NewIntptr(return_value));
}
CObject* File::SetPositionRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if ((request.Length() != 2) || !request[1]->IsInt32OrInt64()) {
return CObject::IllegalArgumentError();
}
if (file->IsClosed()) {
return CObject::FileClosedError();
}
const int64_t position = CObjectInt32OrInt64ToInt64(request[1]);
return file->SetPosition(position) ? CObject::True() : CObject::NewOSError();
}
CObject* File::TruncateRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if ((request.Length() != 2) || !request[1]->IsInt32OrInt64()) {
return CObject::IllegalArgumentError();
}
if (file->IsClosed()) {
return CObject::FileClosedError();
}
const int64_t length = CObjectInt32OrInt64ToInt64(request[1]);
if (file->Truncate(length)) {
return CObject::True();
}
return CObject::NewOSError();
}
CObject* File::LengthRequest(const CObjectArray& request) {
if ((request.Length() != 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if (file->IsClosed()) {
return CObject::FileClosedError();
}
const int64_t return_value = file->Length();
if (return_value < 0) {
return CObject::NewOSError();
}
return new CObjectInt64(CObject::NewInt64(return_value));
}
CObject* File::LengthFromPathRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 2) || !request[1]->IsUint8Array()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array filepath(request[1]);
const int64_t return_value = File::LengthFromPath(
namespc, reinterpret_cast<const char*>(filepath.Buffer()));
if (return_value < 0) {
return CObject::NewOSError();
}
return new CObjectInt64(CObject::NewInt64(return_value));
}
CObject* File::LastAccessedRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 2) || !request[1]->IsUint8Array()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array filepath(request[1]);
const int64_t return_value = File::LastAccessed(
namespc, reinterpret_cast<const char*>(filepath.Buffer()));
if (return_value < 0) {
return CObject::NewOSError();
}
return new CObjectIntptr(
CObject::NewInt64(return_value * kMillisecondsPerSecond));
}
CObject* File::SetLastAccessedRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 3) || !request[1]->IsUint8Array() ||
!request[2]->IsInt32OrInt64()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array filepath(request[1]);
const int64_t millis = CObjectInt32OrInt64ToInt64(request[2]);
return File::SetLastAccessed(
namespc, reinterpret_cast<const char*>(filepath.Buffer()), millis)
? CObject::Null()
: CObject::NewOSError();
}
CObject* File::LastModifiedRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 2) || !request[1]->IsUint8Array()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array filepath(request[1]);
const int64_t return_value = File::LastModified(
namespc, reinterpret_cast<const char*>(filepath.Buffer()));
if (return_value < 0) {
return CObject::NewOSError();
}
return new CObjectIntptr(
CObject::NewInt64(return_value * kMillisecondsPerSecond));
}
CObject* File::SetLastModifiedRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 3) || !request[1]->IsUint8Array() ||
!request[2]->IsInt32OrInt64()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array filepath(request[1]);
const int64_t millis = CObjectInt32OrInt64ToInt64(request[2]);
return File::SetLastModified(
namespc, reinterpret_cast<const char*>(filepath.Buffer()), millis)
? CObject::Null()
: CObject::NewOSError();
}
CObject* File::FlushRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if (file->IsClosed()) {
return CObject::FileClosedError();
}
return file->Flush() ? CObject::True() : CObject::NewOSError();
}
CObject* File::ReadByteRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if (file->IsClosed()) {
return CObject::FileClosedError();
}
uint8_t buffer;
const int64_t bytes_read = file->Read(reinterpret_cast<void*>(&buffer), 1);
if (bytes_read < 0) {
return CObject::NewOSError();
}
if (bytes_read == 0) {
return new CObjectIntptr(CObject::NewIntptr(-1));
}
return new CObjectIntptr(CObject::NewIntptr(buffer));
}
CObject* File::WriteByteRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if ((request.Length() != 2) || !request[1]->IsInt32OrInt64()) {
return CObject::IllegalArgumentError();
}
if (file->IsClosed()) {
return CObject::FileClosedError();
}
const int64_t byte = CObjectInt32OrInt64ToInt64(request[1]);
uint8_t buffer = static_cast<uint8_t>(byte & 0xff);
return file->WriteFully(reinterpret_cast<void*>(&buffer), 1)
? new CObjectInt64(CObject::NewInt64(1))
: CObject::NewOSError();
}
CObject* File::ReadRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if ((request.Length() != 2) || !request[1]->IsInt32OrInt64()) {
return CObject::IllegalArgumentError();
}
if (file->IsClosed()) {
return CObject::FileClosedError();
}
const int64_t length = CObjectInt32OrInt64ToInt64(request[1]);
Dart_CObject* io_buffer = CObject::NewIOBuffer(length);
if (io_buffer == nullptr) {
return CObject::NewOSError();
}
uint8_t* data = io_buffer->value.as_external_typed_data.data;
const int64_t bytes_read = file->Read(data, length);
if (bytes_read < 0) {
CObject* error = CObject::NewOSError();
CObject::FreeIOBufferData(io_buffer);
return error;
}
// Possibly shrink the used malloc() storage if the actual number of bytes is
// significantly lower.
CObject::ShrinkIOBuffer(io_buffer, bytes_read);
auto external_array = new CObjectExternalUint8Array(io_buffer);
CObjectArray* result = new CObjectArray(CObject::NewArray(2));
result->SetAt(0, new CObjectIntptr(CObject::NewInt32(0)));
result->SetAt(1, external_array);
return result;
}
CObject* File::ReadIntoRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if ((request.Length() != 2) || !request[1]->IsInt32OrInt64()) {
return CObject::IllegalArgumentError();
}
if (file->IsClosed()) {
return CObject::FileClosedError();
}
const int64_t length = CObjectInt32OrInt64ToInt64(request[1]);
Dart_CObject* io_buffer = CObject::NewIOBuffer(length);
if (io_buffer == nullptr) {
return CObject::NewOSError();
}
uint8_t* data = io_buffer->value.as_external_typed_data.data;
const int64_t bytes_read = file->Read(data, length);
if (bytes_read < 0) {
CObject* error = CObject::NewOSError();
CObject::FreeIOBufferData(io_buffer);
return error;
}
// Possibly shrink the used malloc() storage if the actual number of bytes is
// significantly lower.
CObject::ShrinkIOBuffer(io_buffer, bytes_read);
auto external_array = new CObjectExternalUint8Array(io_buffer);
CObjectArray* result = new CObjectArray(CObject::NewArray(3));
result->SetAt(0, new CObjectIntptr(CObject::NewInt32(0)));
result->SetAt(1, new CObjectInt64(CObject::NewInt64(bytes_read)));
result->SetAt(2, external_array);
return result;
}
static int SizeInBytes(Dart_TypedData_Type type) {
switch (type) {
case Dart_TypedData_kInt8:
case Dart_TypedData_kUint8:
case Dart_TypedData_kUint8Clamped:
return 1;
case Dart_TypedData_kInt16:
case Dart_TypedData_kUint16:
return 2;
case Dart_TypedData_kInt32:
case Dart_TypedData_kUint32:
case Dart_TypedData_kFloat32:
return 4;
case Dart_TypedData_kInt64:
case Dart_TypedData_kUint64:
case Dart_TypedData_kFloat64:
return 8;
case Dart_TypedData_kInt32x4:
case Dart_TypedData_kFloat32x4:
case Dart_TypedData_kFloat64x2:
return 16;
default:
break;
}
UNREACHABLE();
return -1;
}
CObject* File::WriteFromRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if ((request.Length() != 4) ||
(!request[1]->IsTypedData() && !request[1]->IsArray()) ||
!request[2]->IsInt32OrInt64() || !request[3]->IsInt32OrInt64()) {
return CObject::IllegalArgumentError();
}
if (file->IsClosed()) {
return CObject::FileClosedError();
}
int64_t start = CObjectInt32OrInt64ToInt64(request[2]);
int64_t end = CObjectInt32OrInt64ToInt64(request[3]);
int64_t length = end - start;
const uint8_t* buffer_start;
if (request[1]->IsTypedData()) {
CObjectTypedData typed_data(request[1]);
start = start * SizeInBytes(typed_data.Type());
length = length * SizeInBytes(typed_data.Type());
buffer_start = typed_data.Buffer() + start;
} else {
CObjectArray array(request[1]);
uint8_t* allocated_buffer = Dart_ScopeAllocate(length);
buffer_start = allocated_buffer;
for (int i = 0; i < length; i++) {
if (array[i + start]->IsInt32OrInt64()) {
int64_t value = CObjectInt32OrInt64ToInt64(array[i + start]);
allocated_buffer[i] = static_cast<uint8_t>(value & 0xFF);
} else {
// Unsupported type.
return CObject::IllegalArgumentError();
}
}
start = 0;
}
return file->WriteFully(reinterpret_cast<const void*>(buffer_start), length)
? new CObjectInt64(CObject::NewInt64(length))
: CObject::NewOSError();
}
CObject* File::CreateLinkRequest(const CObjectArray& request) {
if ((request.Length() != 3) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if (!request[1]->IsUint8Array() || !request[2]->IsString()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array link_name(request[1]);
CObjectString target_name(request[2]);
return File::CreateLink(namespc,
reinterpret_cast<const char*>(link_name.Buffer()),
target_name.CString())
? CObject::True()
: CObject::NewOSError();
}
CObject* File::DeleteLinkRequest(const CObjectArray& request) {
if ((request.Length() != 2) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if (!request[1]->IsUint8Array()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array link_path(request[1]);
return File::DeleteLink(namespc,
reinterpret_cast<const char*>(link_path.Buffer()))
? CObject::True()
: CObject::NewOSError();
}
CObject* File::RenameLinkRequest(const CObjectArray& request) {
if ((request.Length() != 3) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if (!request[1]->IsUint8Array() || !request[2]->IsString()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array old_path(request[1]);
CObjectString new_path(request[2]);
return File::RenameLink(namespc,
reinterpret_cast<const char*>(old_path.Buffer()),
new_path.CString())
? CObject::True()
: CObject::NewOSError();
}
CObject* File::LinkTargetRequest(const CObjectArray& request) {
if ((request.Length() != 2) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if (!request[1]->IsUint8Array()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array link_path(request[1]);
const char* target = File::LinkTarget(
namespc, reinterpret_cast<const char*>(link_path.Buffer()));
if (target == nullptr) {
return CObject::NewOSError();
}
return new CObjectString(CObject::NewString(target));
}
CObject* File::TypeRequest(const CObjectArray& request) {
if ((request.Length() != 3) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if (!request[1]->IsUint8Array() || !request[2]->IsBool()) {
return CObject::IllegalArgumentError();
}
CObjectUint8Array path(request[1]);
CObjectBool follow_links(request[2]);
File::Type type =
File::GetType(namespc, reinterpret_cast<const char*>(path.Buffer()),
follow_links.Value());
return new CObjectInt32(CObject::NewInt32(type));
}
CObject* File::IdenticalRequest(const CObjectArray& request) {
if ((request.Length() != 3) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if (!request[1]->IsString() || !request[2]->IsString()) {
return CObject::IllegalArgumentError();
}
CObjectString path1(request[1]);
CObjectString path2(request[2]);
File::Identical result =
File::AreIdentical(namespc, path1.CString(), namespc, path2.CString());
if (result == File::kError) {
return CObject::NewOSError();
}
return (result == File::kIdentical) ? CObject::True() : CObject::False();
}
CObject* File::StatRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
Namespace* namespc = CObjectToNamespacePointer(request[0]);
RefCntReleaseScope<Namespace> rs(namespc);
if ((request.Length() != 2) || !request[1]->IsString()) {
return CObject::IllegalArgumentError();
}
int64_t data[File::kStatSize];
CObjectString path(request[1]);
File::Stat(namespc, path.CString(), data);
if (data[File::kType] == File::kDoesNotExist) {
return CObject::NewOSError();
}
CObjectArray* result = new CObjectArray(CObject::NewArray(File::kStatSize));
for (int i = 0; i < File::kStatSize; ++i) {
result->SetAt(i, new CObjectInt64(CObject::NewInt64(data[i])));
}
CObjectArray* wrapper = new CObjectArray(CObject::NewArray(2));
wrapper->SetAt(0, new CObjectInt32(CObject::NewInt32(CObject::kSuccess)));
wrapper->SetAt(1, result);
return wrapper;
}
CObject* File::LockRequest(const CObjectArray& request) {
if ((request.Length() < 1) || !request[0]->IsIntptr()) {
return CObject::IllegalArgumentError();
}
File* file = CObjectToFilePointer(request[0]);
RefCntReleaseScope<File> rs(file);
if ((request.Length() != 4) || !request[1]->IsInt32OrInt64() ||
!request[2]->IsInt32OrInt64() || !request[3]->IsInt32OrInt64()) {
return CObject::IllegalArgumentError();
}
if (file->IsClosed()) {
return CObject::FileClosedError();
}
const int64_t lock = CObjectInt32OrInt64ToInt64(request[1]);
const int64_t start = CObjectInt32OrInt64ToInt64(request[2]);
const int64_t end = CObjectInt32OrInt64ToInt64(request[3]);
return file->Lock(static_cast<File::LockType>(lock), start, end)
? CObject::True()
: CObject::NewOSError();
}
// Inspired by sdk/lib/core/uri.dart
UriDecoder::UriDecoder(const char* uri) : uri_(uri) {
const char* ch = uri;
while ((*ch != '\0') && (*ch != '%')) {
ch++;
}
if (*ch == 0) {
// if there are no '%', nothing to decode, refer to original as decoded.
decoded_ = const_cast<char*>(uri);
return;
}
const intptr_t len = strlen(uri);
// Decoded string should be shorter than original because of
// percent-encoding.
char* dest = reinterpret_cast<char*>(malloc(len + 1));
int i = ch - uri;
// Copy all characters up to first '%' at index i.
strncpy(dest, uri, i);
decoded_ = dest;
dest += i;
while (*ch != '\0') {
if (*ch != '%') {
*(dest++) = *(ch++);
continue;
}
if ((i + 3 > len) || !HexCharPairToByte(ch + 1, dest)) {
free(decoded_);
decoded_ = nullptr;
return;
}
++dest;
ch += 3;
}
*dest = 0;
}
UriDecoder::~UriDecoder() {
if (uri_ != decoded_ && decoded_ != nullptr) {
free(decoded_);
}
}
bool UriDecoder::HexCharPairToByte(const char* pch, char* const dest) {
int byte = 0;
for (int i = 0; i < 2; i++) {
char char_code = *(pch + i);
if (0x30 <= char_code && char_code <= 0x39) {
byte = byte * 16 + char_code - 0x30;
} else {
// Check ranges A-F (0x41-0x46) and a-f (0x61-0x66).
char_code |= 0x20;
if (0x61 <= char_code && char_code <= 0x66) {
byte = byte * 16 + char_code - 0x57;
} else {
return false;
}
}
}
*dest = byte;
return true;
}
} // namespace bin
} // namespace dart