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#include "archive.hpp"
#include "main_window.hpp"
#include <algorithm>
namespace getsuyomi {
using fud::FudStatus;
ZipArchive::ZipArchive(const QString& filename)
{
auto filenameUtf8 = filename.toUtf8();
qDebug("Open file %s", filenameUtf8.data());
int err;
m_archive = zip_open(filenameUtf8.data(), 0, &err);
if (m_archive == nullptr) {
zip_error_t error;
zip_error_init_with_code(&error, err);
qCritical("%s: cannot open zip archive '%s': %s", AppName, filenameUtf8.data(), zip_error_strerror(&error));
zip_error_fini(&error);
return;
}
auto status = populate();
if (status != FudStatus::Success) {
cleanup();
return;
}
}
ZipArchive::ZipArchive(ZipArchive&& rhs)
:m_archive{rhs.m_archive},
m_sortedIndices{std::move(rhs.m_sortedIndices)},
m_filenames{std::move(rhs.m_filenames)},
m_fileSizes{std::move(rhs.m_fileSizes)},
m_pages{std::move(rhs.m_pages)}
{
rhs.m_archive = nullptr;
}
ZipArchive::~ZipArchive()
{
cleanup();
}
ZipArchive& ZipArchive::operator=(ZipArchive&& rhs)
{
m_archive = rhs.m_archive;
m_sortedIndices = std::move(rhs.m_sortedIndices);
m_filenames = std::move(rhs.m_filenames);
m_fileSizes = std::move(rhs.m_fileSizes);
m_pages = std::move(rhs.m_pages);
rhs.m_archive = nullptr;
return *this;
}
bool ZipArchive::valid() const {
return m_archive != nullptr;
}
void ZipArchive::cleanup() {
if (m_archive != nullptr) {
zip_discard(m_archive);
m_archive = nullptr;
}
}
fud::FudStatus ZipArchive::populate()
{
if (!valid()) {
qCritical("Invalid zipArchive");
return FudStatus::ObjectInvalid;
}
auto numEntriesResult = zip_get_num_entries(m_archive, ZIP_FL_UNCHANGED);
if (numEntriesResult < 0) {
return FudStatus::Failure;
}
size_t numEntries = static_cast<size_t>(numEntriesResult);
struct NameIndex {
std::string name;
size_t index;
size_t filesize;
};
std::vector<NameIndex> nameIndices{};
nameIndices.reserve(numEntries);
m_pages.reserve(numEntries);
for (size_t idx = 0; idx < numEntries; ++idx) {
struct zip_stat stats;
auto status = zip_stat_index(m_archive, idx, 0, &stats);
if (status < 0) {
return FudStatus::Failure;
}
static_assert(ZIP_STAT_NAME != 0);
static_assert(ZIP_STAT_SIZE != 0);
static_assert(ZIP_STAT_INDEX != 0);
auto* nameCString = stats.name;
if (nameCString == nullptr) {
zip_error_t* error = zip_get_error(m_archive);
qWarning("cannot get name %s", zip_error_strerror(error));
continue;
}
std::string name{nameCString};
if (name.empty() || name.back() == '/') {
continue;
}
nameIndices.emplace_back(NameIndex{name, idx, stats.size});
m_pages.emplace_back(std::nullopt);
}
if (m_pages.empty()) {
return FudStatus::Empty;
}
std::sort(nameIndices.begin(), nameIndices.end(), [](const auto& lhs, const auto& rhs) {
return std::lexicographical_compare(lhs.name.begin(), lhs.name.end(), rhs.name.begin(), rhs.name.end());
});
m_sortedIndices.reserve(nameIndices.size());
m_filenames.reserve(nameIndices.size());
m_fileSizes.reserve(nameIndices.size());
for (const auto& nameIndex : nameIndices) {
m_sortedIndices.push_back(nameIndex.index);
m_filenames.push_back(nameIndex.name);
m_fileSizes.push_back(nameIndex.filesize);
}
return FudStatus::Success;
}
ArchiveResult ZipArchive::getPage(size_t page)
{
if (page > m_sortedIndices.size()) {
return ArchiveResult::error(ArchiveError::BadIndex);
}
if (m_pages[page] != std::nullopt) {
return ArchiveResult::okay(std::cref(*m_pages[page]));
}
auto* file = zip_fopen_index(m_archive, m_sortedIndices[page], 0);
if (file == nullptr) {
zip_error_t* error = zip_get_error(m_archive);
qWarning("cannot get file name %s: %s", m_filenames[page].data(), zip_error_strerror(error));
return ArchiveResult::error(ArchiveError::ZipError);
}
QByteArray data;
data.resize(static_cast<qsizetype>(m_fileSizes[page]));
auto bytesRead = zip_fread(file, data.data(), static_cast<size_t>(data.size()));
zip_fclose(file);
file = nullptr;
if (bytesRead != data.size()) {
return ArchiveResult::error(ArchiveError::ZipError);
}
m_pages[page] = QImage();
auto loaded = m_pages[page]->loadFromData(data);
if (!loaded) {
qWarning("Failed to load QImage");
m_pages[page] = std::nullopt;
return ArchiveResult::error(ArchiveError::BadData);
}
return ArchiveResult::okay(std::cref(*m_pages[page]));
}
size_t ZipArchive::numPages() const {
return m_pages.size();
}
} // namespace getsuyomi
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