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namespace Duplicati.Library.Compression.ZipCompression;

/// <summary>
/// Constants used in the ZipCompression namespace
/// </summary>
internal class Constants
{
    /// <summary>
    /// The size of the local header entry
    /// </summary>
    public const string CannotReadWhileWriting = "Cannot read while writing";
    /// <summary>
    /// The size of the local header entry
    /// </summary>
    public const string CannotWriteWhileReading = "Cannot write while reading";

    /// <summary>
    /// Size of endheader, taken from SharpCompress ZipWriter
    /// </summary>
    public const int END_OF_CENTRAL_DIRECTORY_SIZE = 8 + 2 + 2 + 4 + 4 + 2 + 0;

    /// <summary>
    /// Taken from SharpCompress ZipCentralDirectorEntry.cs
    /// </summary>
    public const int CENTRAL_HEADER_ENTRY_SIZE = 8 + 2 + 2 + 4 + 4 + 4 + 4 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 4;

    /// <summary>
    /// The size of the extended zip64 header
    /// </summary>
    public const int CENTRAL_HEADER_ENTRY_SIZE_ZIP64_EXTRA = 2 + 2 + 8 + 8 + 8 + 4;
}