134 lines
5.7 KiB
C++
134 lines
5.7 KiB
C++
/*
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* Copyright (c) 2022-2024, Kenneth Myhra <kennethmyhra@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Time.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibWeb/Bindings/FilePrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/FileAPI/File.h>
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#include <LibWeb/Infra/Strings.h>
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#include <LibWeb/MimeSniff/MimeType.h>
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namespace Web::FileAPI {
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JS_DEFINE_ALLOCATOR(File);
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File::File(JS::Realm& realm, ByteBuffer byte_buffer, String file_name, String type, i64 last_modified)
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: Blob(realm, move(byte_buffer), move(type))
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, m_name(move(file_name))
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, m_last_modified(last_modified)
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{
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}
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File::File(JS::Realm& realm)
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: Blob(realm, {})
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{
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}
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void File::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(File);
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}
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File::~File() = default;
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JS::NonnullGCPtr<File> File::create(JS::Realm& realm)
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{
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return realm.heap().allocate<File>(realm, realm);
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}
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// https://w3c.github.io/FileAPI/#ref-for-dom-file-file
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WebIDL::ExceptionOr<JS::NonnullGCPtr<File>> File::create(JS::Realm& realm, Vector<BlobPart> const& file_bits, String const& file_name, Optional<FilePropertyBag> const& options)
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{
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auto& vm = realm.vm();
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// 1. Let bytes be the result of processing blob parts given fileBits and options.
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auto bytes = TRY_OR_THROW_OOM(vm, process_blob_parts(file_bits, options.has_value() ? static_cast<BlobPropertyBag const&>(*options) : Optional<BlobPropertyBag> {}));
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// 2. Let n be the fileName argument to the constructor.
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// NOTE: Underlying OS filesystems use differing conventions for file name; with constructed files, mandating UTF-16 lessens ambiquity when file names are converted to byte sequences.
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auto name = file_name;
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auto type = String {};
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i64 last_modified = 0;
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// 3. Process FilePropertyBag dictionary argument by running the following substeps:
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if (options.has_value()) {
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// FIXME: 1. If the type member is provided and is not the empty string, let t be set to the type dictionary member.
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// If t contains any characters outside the range U+0020 to U+007E, then set t to the empty string and return from these substeps.
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// FIXME: 2. Convert every character in t to ASCII lowercase.
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// NOTE: The spec is out of date, and we are supposed to call into the MimeType parser here.
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auto maybe_parsed_type = Web::MimeSniff::MimeType::parse(options->type);
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if (maybe_parsed_type.has_value())
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type = maybe_parsed_type->serialized();
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// 3. If the lastModified member is provided, let d be set to the lastModified dictionary member. If it is not provided, set d to the current date and time represented as the number of milliseconds since the Unix Epoch (which is the equivalent of Date.now() [ECMA-262]).
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// Note: Since ECMA-262 Date objects convert to long long values representing the number of milliseconds since the Unix Epoch, the lastModified member could be a Date object [ECMA-262].
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last_modified = options->last_modified.has_value() ? options->last_modified.value() : UnixDateTime::now().milliseconds_since_epoch();
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}
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// 4. Return a new File object F such that:
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// 2. F refers to the bytes byte sequence.
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// NOTE: Spec started at 2 therefore keeping the same number sequence here.
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// 3. F.size is set to the number of total bytes in bytes.
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// 4. F.name is set to n.
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// 5. F.type is set to t.
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// 6. F.lastModified is set to d.
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return realm.heap().allocate<File>(realm, realm, move(bytes), move(name), move(type), last_modified);
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}
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WebIDL::ExceptionOr<JS::NonnullGCPtr<File>> File::construct_impl(JS::Realm& realm, Vector<BlobPart> const& file_bits, String const& file_name, Optional<FilePropertyBag> const& options)
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{
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return create(realm, file_bits, file_name, options);
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}
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WebIDL::ExceptionOr<void> File::serialization_steps(HTML::SerializationRecord& record, bool, HTML::SerializationMemory&)
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{
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auto& vm = this->vm();
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// FIXME: 1. Set serialized.[[SnapshotState]] to value’s snapshot state.
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// NON-STANDARD: FileAPI spec doesn't specify that type should be serialized, although
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// to be conformant with other browsers this needs to be serialized.
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TRY(HTML::serialize_string(vm, record, m_type));
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// 2. Set serialized.[[ByteSequence]] to value’s underlying byte sequence.
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TRY(HTML::serialize_bytes(vm, record, m_byte_buffer.bytes()));
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// 3. Set serialized.[[Name]] to the value of value’s name attribute.
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TRY(HTML::serialize_string(vm, record, m_name));
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// 4. Set serialized.[[LastModified]] to the value of value’s lastModified attribute.
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HTML::serialize_primitive_type(record, m_last_modified);
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return {};
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}
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WebIDL::ExceptionOr<void> File::deserialization_steps(ReadonlySpan<u32> const& record, size_t& position, HTML::DeserializationMemory&)
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{
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auto& vm = this->vm();
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// FIXME: 1. Set value’s snapshot state to serialized.[[SnapshotState]].
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// NON-STANDARD: FileAPI spec doesn't specify that type should be deserialized, although
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// to be conformant with other browsers this needs to be deserialized.
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m_type = TRY(HTML::deserialize_string(vm, record, position));
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// 2. Set value’s underlying byte sequence to serialized.[[ByteSequence]].
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m_byte_buffer = TRY(HTML::deserialize_bytes(vm, record, position));
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// 3. Initialize the value of value’s name attribute to serialized.[[Name]].
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m_name = TRY(HTML::deserialize_string(vm, record, position));
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// 4. Initialize the value of value’s lastModified attribute to serialized.[[LastModified]].
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m_last_modified = HTML::deserialize_primitive_type<i64>(record, position);
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return {};
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}
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}
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