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ClipboardHistory: Store clipboard history as valid JSON

Browse source 
Previously, the ClipboardHistory.json file contained a series of
individual JSON objects for history items, separated by newlines. This
is convenient for appending a single item, but makes the file itself
invalid JSON.

This commit changes that file to instead contain those objects in a
proper JSON array.
This commit is contained in:
Sam Atkins 2024-02-07 12:33:26 +00:00 committed by Sam Atkins
parent ff3e454565
commit 0b9aee57e7
2 changed files with 26 additions and 39 deletions
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61
Userland/Applets/ClipboardHistory/ClipboardHistoryModel.cpp
View file

@ -111,40 +111,38 @@ void ClipboardHistoryModel::clipboard_content_did_change(ByteString const&)
add_item(data_and_type);
}
ErrorOr<void> ClipboardHistoryModel::invalidate_model_and_file(bool rewrite_all)
ErrorOr<void> ClipboardHistoryModel::invalidate_model_and_file()
{
invalidate();
TRY(write_to_file(rewrite_all));
TRY(write_to_file());
return {};
}
void ClipboardHistoryModel::add_item(const GUI::Clipboard::DataAndType& item)
{
bool has_deleted_an_item = false;
m_history_items.remove_first_matching([&](ClipboardItem& existing) {
return existing.data_and_type.data == item.data && existing.data_and_type.mime_type == item.mime_type;
});
if (m_history_items.size() == m_history_limit) {
m_history_items.take_last();
has_deleted_an_item = true;
}
m_history_items.prepend({ item, Core::DateTime::now() });
invalidate_model_and_file(has_deleted_an_item).release_value_but_fixme_should_propagate_errors();
invalidate_model_and_file().release_value_but_fixme_should_propagate_errors();
}
void ClipboardHistoryModel::remove_item(int index)
{
m_history_items.remove(index);
invalidate_model_and_file(true).release_value_but_fixme_should_propagate_errors();
invalidate_model_and_file().release_value_but_fixme_should_propagate_errors();
}
void ClipboardHistoryModel::clear()
{
m_history_items.clear();
invalidate_model_and_file(true).release_value_but_fixme_should_propagate_errors();
invalidate_model_and_file().release_value_but_fixme_should_propagate_errors();
}
void ClipboardHistoryModel::config_i32_did_change(StringView domain, StringView group, StringView key, i32 value)
@ -155,7 +153,7 @@ void ClipboardHistoryModel::config_i32_did_change(StringView domain, StringView
if (key == "NumHistoryItems") {
if (value < (int)m_history_items.size()) {
m_history_items.remove(value, m_history_items.size() - value);
invalidate_model_and_file(false).release_value_but_fixme_should_propagate_errors();
invalidate_model_and_file().release_value_but_fixme_should_propagate_errors();
}
m_history_limit = value;
return;
@ -190,14 +188,15 @@ ErrorOr<void> ClipboardHistoryModel::read_from_file(ByteString const& path)
auto read_from_file_impl = [this]() -> ErrorOr<void> {
auto file = TRY(Core::File::open(m_path, Core::File::OpenMode::Read));
auto buffered_file = TRY(Core::InputBufferedFile::create(move(file)));
auto buffer = TRY(ByteBuffer::create_uninitialized(PAGE_SIZE));
while (TRY(buffered_file->can_read_line())) {
auto line = TRY(buffered_file->read_line(buffer));
auto object = TRY(JsonParser { line }.parse()).as_object();
TRY(m_history_items.try_append(TRY(ClipboardItem::from_json(object))));
auto contents = TRY(file->read_until_eof());
auto json = TRY(JsonValue::from_string(contents));
if (!json.is_array())
return Error::from_string_literal("File contents is not a JSON array.");
auto& json_array = json.as_array();
for (auto const& item : json_array.values()) {
if (!item.is_object())
return Error::from_string_literal("JSON entry is not an object.");
TRY(m_history_items.try_append(TRY(ClipboardItem::from_json(item.as_object()))));
}
return {};
};
@ -209,30 +208,18 @@ ErrorOr<void> ClipboardHistoryModel::read_from_file(ByteString const& path)
return {};
}
ErrorOr<void> ClipboardHistoryModel::write_to_file(bool rewrite_all)
ErrorOr<void> ClipboardHistoryModel::write_to_file()
{
if (m_history_items.is_empty()) {
// This will proceed to empty the file
rewrite_all = true;
}
auto const write_element = [](Core::File& file, ClipboardItem const& item) -> ErrorOr<void> {
auto file = TRY(Core::File::open(m_path, Core::File::OpenMode::Write | Core::File::OpenMode::Truncate));
JsonArray array;
array.ensure_capacity(m_history_items.size());
for (auto const& item : m_history_items) {
if (!item.data_and_type.mime_type.starts_with("text/"sv))
return {};
TRY(file.write_until_depleted(TRY(item.to_json()).to_byte_string().bytes()));
TRY(file.write_until_depleted("\n"sv.bytes()));
return {};
};
if (!rewrite_all) {
auto file = TRY(Core::File::open(m_path, Core::File::OpenMode::Write | Core::File::OpenMode::Append));
TRY(write_element(*file, m_history_items.first()));
} else {
auto file = TRY(Core::File::open(m_path, Core::File::OpenMode::Write | Core::File::OpenMode::Truncate));
for (auto const& item : m_history_items) {
TRY(write_element(*file, item));
}
continue;
TRY(array.append(TRY(item.to_json())));
}
auto json_string = array.to_byte_string();
TRY(file->write_until_depleted(json_string.bytes()));
return {};
}

4
Userland/Applets/ClipboardHistory/ClipboardHistoryModel.h
View file

@ -45,9 +45,9 @@ public:
bool is_empty() { return m_history_items.is_empty(); }
ErrorOr<void> read_from_file(ByteString const& path);
ErrorOr<void> write_to_file(bool rewrite_all);
ErrorOr<void> write_to_file();
ErrorOr<void> invalidate_model_and_file(bool rewrite_all);
ErrorOr<void> invalidate_model_and_file();
// ^GUI::Model
virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;