/// <summary>
/// Extacts the patch metadata as XML.
/// </summary>
/// <param name="path">Path to patch.</param>
/// <returns>String XML.</returns>
public static string ExtractPatchXml(string path)
{
var buffer = new StringBuilder(65535);
var size = buffer.Capacity;
var error = MsiInterop.MsiExtractPatchXMLData(path, 0, buffer, ref size);
if (234 == error)
{
buffer.EnsureCapacity(++size);
error = MsiInterop.MsiExtractPatchXMLData(path, 0, buffer, ref size);
}
if (error != 0)
{
throw new MsiException(error);
}
return(buffer.ToString());
}
private void GetSummaryInformationValue(int index, out uint dataType, out int intValue, out StringBuilder stringValue, out FILETIME timeValue)
{
var bufSize = 64;
stringValue = new StringBuilder(bufSize);
timeValue.dwHighDateTime = 0;
timeValue.dwLowDateTime = 0;
var error = MsiInterop.MsiSummaryInfoGetProperty(this.Handle, index, out dataType, out intValue, ref timeValue, stringValue, ref bufSize);
if (234 == error)
{
stringValue.EnsureCapacity(++bufSize);
error = MsiInterop.MsiSummaryInfoGetProperty(this.Handle, index, out dataType, out intValue, ref timeValue, stringValue, ref bufSize);
}
if (0 != error)
{
throw new MsiException(error);
}
}
/// <summary>
/// Takes the path to a file and returns a 128-bit hash of that file.
/// </summary>
/// <param name="filePath">Path to file that is to be hashed.</param>
/// <param name="options">The value in this column must be 0. This parameter is reserved for future use.</param>
/// <param name="hash">Int array that receives the returned file hash information.</param>
public static void GetFileHash(string filePath, int options, out int[] hash)
{
var hashInterop = new MSIFILEHASHINFO();
hashInterop.FileHashInfoSize = 20;
var error = MsiInterop.MsiGetFileHash(filePath, Convert.ToUInt32(options), hashInterop);
if (0 != error)
{
throw new MsiException(error);
}
Debug.Assert(20 == hashInterop.FileHashInfoSize);
hash = new int[4];
hash[0] = hashInterop.Data0;
hash[1] = hashInterop.Data1;
hash[2] = hashInterop.Data2;
hash[3] = hashInterop.Data3;
}
/// <summary>
/// Constructor that creates a view given a database handle and a query.
/// </summary>
/// <param name="db">Handle to the database to run the query on.</param>
/// <param name="query">Query to be executed.</param>
public View(Database db, string query)
{
if (null == db)
{
throw new ArgumentNullException(nameof(db));
}
if (null == query)
{
throw new ArgumentNullException(nameof(query));
}
var error = MsiInterop.MsiDatabaseOpenView(db.Handle, query, out var handle);
if (0 != error)
{
throw new MsiException(error);
}
this.Handle = handle;
}
/// <summary>
/// Verifies the existence or absence of a table.
/// </summary>
/// <param name="tableName">Table name to to verify the existence of.</param>
/// <returns>Returns true if the table exists, false if it does not.</returns>
public bool TableExists(string tableName)
{
var result = MsiInterop.MsiDatabaseIsTablePersistent(this.Handle, tableName);
return MsiInterop.MSICONDITIONTRUE == result;
}
/// <summary>
/// Enables the installer's internal user interface.
/// </summary>
/// <param name="uiLevel">Specifies the level of complexity of the user interface.</param>
/// <param name="hwnd">Pointer to a window. This window becomes the owner of any user interface created.</param>
/// <returns>The previous user interface level is returned. If an invalid dwUILevel is passed, then INSTALLUILEVEL_NOCHANGE is returned.</returns>
public static int SetInternalUI(int uiLevel, ref IntPtr hwnd)
{
return(MsiInterop.MsiSetInternalUI(uiLevel, ref hwnd));
}
/// <summary>
/// Enables an external user-interface handler.
/// </summary>
/// <param name="installUIHandler">Specifies a callback function.</param>
/// <param name="messageFilter">Specifies which messages to handle using the external message handler.</param>
/// <param name="context">Pointer to an application context that is passed to the callback function.</param>
/// <returns>The return value is the previously set external handler, or null if there was no previously set handler.</returns>
public static InstallUIHandler SetExternalUI(InstallUIHandler installUIHandler, int messageFilter, IntPtr context)
{
return(MsiInterop.MsiSetExternalUI(installUIHandler, messageFilter, context));
}
