1 files changed, 52 insertions, 0 deletions
diff --git a/src/archive.hpp b/src/archive.hpp
new file mode 100644
index 0000000..d8464e5
--- /dev/null
+++ b/src/archive.hpp
@@ -0,0 +1,52 @@
+#ifndef ARCHIVE_HPP
+#define ARCHIVE_HPP
+
+#include "result.hpp"
+
+#include <QtWidgets>
+#include <cstdlib>
+#include <string>
+#include <vector>
+#include <zip.h>
+
+namespace getsuyomi {
+
+enum class ArchiveError
+{
+    BadIndex,
+    ZipError,
+    BadData,
+    Unimplemented
+};
+
+using ArchiveResult = Result<std::reference_wrapper<const QImage>, ArchiveError>;
+
+class Archive {
+  public:
+    virtual ~Archive() = default;
+    virtual ArchiveResult getPage(size_t page) = 0;
+    virtual size_t numPages() const = 0;
+};
+
+class ZipArchive : public Archive {
+  public:
+    explicit ZipArchive(const QString& filename);
+    virtual ~ZipArchive() override;
+    virtual ArchiveResult getPage(size_t page) override;
+    virtual size_t numPages() const override;
+
+  private:
+    void populate();
+
+    zip_t* m_archive{nullptr};
+
+    std::vector<size_t> m_sortedIndices{};
+    std::vector<std::string> m_filenames{};
+    std::vector<size_t> m_fileSizes{};
+
+    std::vector<std::optional<QImage>> m_pages{};
+};
+
+} // namespace getsuyomi
+
+#endif