Adding upstream version 0.19.2.upstream/0.19.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 126 insertions, 0 deletions

diff --git a/include/orcus/zip_archive.hpp b/include/orcus/zip_archive.hpp
new file mode 100644
index 0000000..afc6727
--- /dev/null
+++ b/include/orcus/zip_archive.hpp
@@ -0,0 +1,126 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_ORCUS_ZIP_ARCHIVE_HPP
+#define INCLUDED_ORCUS_ZIP_ARCHIVE_HPP
+
+#include "env.hpp"
+#include "exception.hpp"
+
+#include <string_view>
+#include <vector>
+#include <memory>
+#include <ostream>
+
+namespace orcus {
+
+/**
+ * Structure containing file entry header attributes.
+ */
+struct ORCUS_PSR_DLLPUBLIC zip_file_entry_header
+{
+    uint32_t header_signature = 0;
+    uint16_t required_version = 0;
+    uint16_t flag = 0;
+    uint16_t compression_method = 0;
+    uint16_t last_modified_time = 0;
+    uint16_t last_modified_date = 0;
+    uint32_t crc32 = 0;
+    uint32_t compressed_size = 0;
+    uint32_t uncompressed_size = 0;
+
+    std::string filename;
+    std::vector<uint8_t> extra_field;
+
+    zip_file_entry_header();
+    zip_file_entry_header(const zip_file_entry_header& other);
+    zip_file_entry_header(zip_file_entry_header&& other);
+    ~zip_file_entry_header();
+
+    zip_file_entry_header& operator=(const zip_file_entry_header& other);
+    zip_file_entry_header& operator=(zip_file_entry_header&& other);
+};
+
+ORCUS_PSR_DLLPUBLIC std::ostream& operator<<(std::ostream& os, const zip_file_entry_header& header);
+
+class zip_archive_stream;
+
+class ORCUS_PSR_DLLPUBLIC zip_archive
+{
+    class impl;
+
+    std::unique_ptr<impl> mp_impl;
+
+public:
+    zip_archive() = delete;
+    zip_archive(const zip_archive&) = delete;
+    zip_archive& operator= (const zip_archive) = delete;
+
+    zip_archive(zip_archive_stream* stream);
+    ~zip_archive();
+
+    /**
+     * Loading involves the parsing of the central directory of a zip archive
+     * (located toward the end of the stream) and building of file entry data
+     * which are stored in the central directory.
+     */
+    void load();
+
+    /**
+     * Retrieve the header information for a file entry specified by index.
+     *
+     * @param index file entry index.
+     *
+     * @return header information for a file entry.
+     */
+    zip_file_entry_header get_file_entry_header(std::size_t index) const;
+
+    /**
+     * Retrieve the header information for a file entry specified by name.
+     *
+     * @param name file entry name.
+     *
+     * @return header information for a file entry.
+     */
+    zip_file_entry_header get_file_entry_header(std::string_view name) const;
+
+    /**
+     * Get file entry name from its index.
+     *
+     * @param index file entry index
+     *
+     * @return file entry name
+     */
+    std::string_view get_file_entry_name(std::size_t index) const;
+
+    /**
+     * Return the number of file entries stored in this zip archive.  Note
+     * that a file entry may be a directory, so the number of files stored in
+     * the zip archive may not equal the number of file entries.
+     *
+     * @return number of file entries.
+     */
+    size_t get_file_entry_count() const;
+
+    /**
+     * Retrieve data stream of specified file entry. The retrieved data stream
+     * gets uncompressed if the original stream is compressed.
+     *
+     * @param entry_name file entry name.
+     *
+     * @return buffer containing the data stream for specified entry.
+     *
+     * @exception zip_error thrown when any problem is encountered during data
+     *                      stream retrieval.
+     */
+    std::vector<unsigned char> read_file_entry(std::string_view entry_name) const;
+};
+
+}
+
+#endif
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */