ladybird/Userland/Applications/PixelPaint/ProjectLoader.cpp
Andreas Kling 587f9af960 AK: Make JSON parser return ErrorOr<JsonValue> (instead of Optional)
Also add slightly richer parse errors now that we can include a string
literal with returned errors.

This will allow us to use TRY() when working with JSON data.
2021-11-17 00:21:10 +01:00

56 lines
1.5 KiB
C++

/*
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "ProjectLoader.h"
#include "Image.h"
#include "Layer.h"
#include <AK/JsonObject.h>
#include <AK/MappedFile.h>
#include <AK/Result.h>
#include <AK/String.h>
#include <LibCore/File.h>
#include <LibImageDecoderClient/Client.h>
namespace PixelPaint {
ErrorOr<void> ProjectLoader::try_load_from_fd_and_close(int fd, StringView path)
{
auto file = Core::File::construct();
file->open(fd, Core::OpenMode::ReadOnly, Core::File::ShouldCloseFileDescriptor::No);
if (file->has_error())
return Error::from_errno(file->error());
auto contents = file->read_all();
auto json_or_error = JsonValue::from_string(contents);
if (json_or_error.is_error()) {
m_is_raw_image = true;
auto mapped_file = TRY(MappedFile::map_from_fd_and_close(fd, path));
// FIXME: Find a way to avoid the memory copy here.
auto bitmap = TRY(Image::try_decode_bitmap(mapped_file->bytes()));
auto image = TRY(Image::try_create_from_bitmap(move(bitmap)));
image->set_path(path);
m_image = image;
return {};
}
close(fd);
auto& json = json_or_error.value().as_object();
auto image = TRY(Image::try_create_from_pixel_paint_json(json));
image->set_path(path);
if (json.has("guides"))
m_json_metadata = json.get("guides").as_array();
m_image = image;
return {};
}
}