/// <summary>
/// Opens an OPC package.
/// </summary>
/// <param name="path">The path to the OPC package.</param>
/// <param name="mode">The mode of the OPC package. Read allows the package to be inspected, but not changed.</param>
/// <returns>An instance of an <see cref="OpcPackage"/>.</returns>
public static OpcPackage Open(string path, OpcPackageFileMode mode = OpcPackageFileMode.Read)
{
var zipMode = GetZipModeFromOpcPackageMode(mode);
var zip = ZipFile.Open(path, zipMode);
return(new OpcPackage(zip, mode));
}
private OpcPackage(ZipArchive archive, OpcPackageFileMode mode)
{
_disposed = false;
Archive = archive;
_mode = mode;
_partTracker = new Dictionary <string, OpcPart>();
}
internal OpcPart(OpcPackage package, string path, ZipArchiveEntry entry, OpcPackageFileMode mode)
{
Uri = new Uri(OpcPackage.BasePackageUri, path);
_package = package;
_path = path;
_entry = entry;
_mode = mode;
}
private OpcPackage ShadowCopyPackage(string packagePath, out string path, OpcPackageFileMode mode = OpcPackageFileMode.Read)
{
var temp = Path.GetTempFileName();
_shadowFiles.Add(temp);
File.Copy(packagePath, temp, true);
path = temp;
return(OpcPackage.Open(temp, mode));
}
private static ZipArchiveMode GetZipModeFromOpcPackageMode(OpcPackageFileMode mode)
{
switch (mode)
{
case OpcPackageFileMode.Read:
return(ZipArchiveMode.Read);
case OpcPackageFileMode.ReadWrite:
return(ZipArchiveMode.Update);
default:
throw new ArgumentException($"Specified {nameof(OpcPackageFileMode)} is invalid.", nameof(mode));
}
}
