public void Execute()
{
int transformFlags = 0;
Output targetOutput = new Output(null);
Output updatedOutput = new Output(null);
// TODO: handle added columns
// to generate a localized transform, both the target and updated
// databases need to have the same code page. the only reason to
// set different code pages is to support localized primary key
// columns, but that would only support deleting rows. if this
// becomes necessary, define a PreviousCodepage property on the
// Output class and persist this throughout transform generation.
targetOutput.Codepage = this.Transform.Codepage;
updatedOutput.Codepage = this.Transform.Codepage;
// remove certain Property rows which will be populated from summary information values
string targetUpgradeCode = null;
string updatedUpgradeCode = null;
Table propertyTable = this.Transform.Tables["Property"];
if (null != propertyTable)
{
for (int i = propertyTable.Rows.Count - 1; i >= 0; i--)
{
Row row = propertyTable.Rows[i];
if ("ProductCode" == (string)row[0] || "ProductLanguage" == (string)row[0] || "ProductVersion" == (string)row[0] || "UpgradeCode" == (string)row[0])
{
propertyTable.Rows.RemoveAt(i);
if ("UpgradeCode" == (string)row[0])
{
updatedUpgradeCode = (string)row[1];
}
}
}
}
Table targetSummaryInfo = targetOutput.EnsureTable(this.TableDefinitions["_SummaryInformation"]);
Table updatedSummaryInfo = updatedOutput.EnsureTable(this.TableDefinitions["_SummaryInformation"]);
Table targetPropertyTable = targetOutput.EnsureTable(this.TableDefinitions["Property"]);
Table updatedPropertyTable = updatedOutput.EnsureTable(this.TableDefinitions["Property"]);
// process special summary information values
foreach (Row row in this.Transform.Tables["_SummaryInformation"].Rows)
{
if ((int)SummaryInformation.Transform.CodePage == (int)row[0])
{
// convert from a web name if provided
string codePage = (string)row.Fields[1].Data;
if (null == codePage)
{
codePage = "0";
}
else
{
codePage = Common.GetValidCodePage(codePage).ToString(CultureInfo.InvariantCulture);
}
string previousCodePage = (string)row.Fields[1].PreviousData;
if (null == previousCodePage)
{
previousCodePage = "0";
}
else
{
previousCodePage = Common.GetValidCodePage(previousCodePage).ToString(CultureInfo.InvariantCulture);
}
Row targetCodePageRow = targetSummaryInfo.CreateRow(null);
targetCodePageRow[0] = 1; // PID_CODEPAGE
targetCodePageRow[1] = previousCodePage;
Row updatedCodePageRow = updatedSummaryInfo.CreateRow(null);
updatedCodePageRow[0] = 1; // PID_CODEPAGE
updatedCodePageRow[1] = codePage;
}
else if ((int)SummaryInformation.Transform.TargetPlatformAndLanguage == (int)row[0] ||
(int)SummaryInformation.Transform.UpdatedPlatformAndLanguage == (int)row[0])
{
// the target language
string[] propertyData = ((string)row[1]).Split(';');
string lang = 2 == propertyData.Length ? propertyData[1] : "0";
Table tempSummaryInfo = (int)SummaryInformation.Transform.TargetPlatformAndLanguage == (int)row[0] ? targetSummaryInfo : updatedSummaryInfo;
Table tempPropertyTable = (int)SummaryInformation.Transform.TargetPlatformAndLanguage == (int)row[0] ? targetPropertyTable : updatedPropertyTable;
Row productLanguageRow = tempPropertyTable.CreateRow(null);
productLanguageRow[0] = "ProductLanguage";
productLanguageRow[1] = lang;
// set the platform;language on the MSI to be generated
Row templateRow = tempSummaryInfo.CreateRow(null);
templateRow[0] = 7; // PID_TEMPLATE
templateRow[1] = (string)row[1];
}
else if ((int)SummaryInformation.Transform.ProductCodes == (int)row[0])
{
string[] propertyData = ((string)row[1]).Split(';');
Row targetProductCodeRow = targetPropertyTable.CreateRow(null);
targetProductCodeRow[0] = "ProductCode";
targetProductCodeRow[1] = propertyData[0].Substring(0, 38);
Row targetProductVersionRow = targetPropertyTable.CreateRow(null);
targetProductVersionRow[0] = "ProductVersion";
targetProductVersionRow[1] = propertyData[0].Substring(38);
Row updatedProductCodeRow = updatedPropertyTable.CreateRow(null);
updatedProductCodeRow[0] = "ProductCode";
updatedProductCodeRow[1] = propertyData[1].Substring(0, 38);
Row updatedProductVersionRow = updatedPropertyTable.CreateRow(null);
updatedProductVersionRow[0] = "ProductVersion";
updatedProductVersionRow[1] = propertyData[1].Substring(38);
// UpgradeCode is optional and may not exists in the target
// or upgraded databases, so do not include a null-valued
// UpgradeCode property.
targetUpgradeCode = propertyData[2];
if (!String.IsNullOrEmpty(targetUpgradeCode))
{
Row targetUpgradeCodeRow = targetPropertyTable.CreateRow(null);
targetUpgradeCodeRow[0] = "UpgradeCode";
targetUpgradeCodeRow[1] = targetUpgradeCode;
// If the target UpgradeCode is specified, an updated
// UpgradeCode is required.
if (String.IsNullOrEmpty(updatedUpgradeCode))
{
updatedUpgradeCode = targetUpgradeCode;
}
}
if (!String.IsNullOrEmpty(updatedUpgradeCode))
{
Row updatedUpgradeCodeRow = updatedPropertyTable.CreateRow(null);
updatedUpgradeCodeRow[0] = "UpgradeCode";
updatedUpgradeCodeRow[1] = updatedUpgradeCode;
}
}
else if ((int)SummaryInformation.Transform.ValidationFlags == (int)row[0])
{
transformFlags = Convert.ToInt32(row[1], CultureInfo.InvariantCulture);
}
else if ((int)SummaryInformation.Transform.Reserved11 == (int)row[0])
{
// PID_LASTPRINTED should be null for transforms
row.Operation = RowOperation.None;
}
else
{
// add everything else as is
Row targetRow = targetSummaryInfo.CreateRow(null);
targetRow[0] = row[0];
targetRow[1] = row[1];
Row updatedRow = updatedSummaryInfo.CreateRow(null);
updatedRow[0] = row[0];
updatedRow[1] = row[1];
}
}
// Validate that both databases have an UpgradeCode if the
// authoring transform will validate the UpgradeCode; otherwise,
// MsiCreateTransformSummaryinfo() will fail with 1620.
if (((int)TransformFlags.ValidateUpgradeCode & transformFlags) != 0 &&
(String.IsNullOrEmpty(targetUpgradeCode) || String.IsNullOrEmpty(updatedUpgradeCode)))
{
Messaging.Instance.OnMessage(WixErrors.BothUpgradeCodesRequired());
}
string emptyFile = null;
foreach (Table table in this.Transform.Tables)
{
// Ignore unreal tables when building transforms except the _Stream table.
// These tables are ignored when generating the database so there is no reason
// to process them here.
if (table.Definition.Unreal && "_Streams" != table.Name)
{
continue;
}
// process table operations
switch (table.Operation)
{
case TableOperation.Add:
updatedOutput.EnsureTable(table.Definition);
break;
case TableOperation.Drop:
targetOutput.EnsureTable(table.Definition);
continue;
default:
targetOutput.EnsureTable(table.Definition);
updatedOutput.EnsureTable(table.Definition);
break;
}
// process row operations
foreach (Row row in table.Rows)
{
switch (row.Operation)
{
case RowOperation.Add:
Table updatedTable = updatedOutput.EnsureTable(table.Definition);
updatedTable.Rows.Add(row);
continue;
case RowOperation.Delete:
Table targetTable = targetOutput.EnsureTable(table.Definition);
targetTable.Rows.Add(row);
// fill-in non-primary key values
foreach (Field field in row.Fields)
{
if (!field.Column.PrimaryKey)
{
if (ColumnType.Number == field.Column.Type && !field.Column.IsLocalizable)
{
field.Data = field.Column.MinValue;
}
else if (ColumnType.Object == field.Column.Type)
{
if (null == emptyFile)
{
emptyFile = Path.Combine(this.TempFilesLocation, "empty");
}
field.Data = emptyFile;
}
else
{
field.Data = "0";
}
}
}
continue;
}
// Assure that the file table's sequence is populated
if ("File" == table.Name)
{
foreach (Row fileRow in table.Rows)
{
if (null == fileRow[7])
{
if (RowOperation.Add == fileRow.Operation)
{
Messaging.Instance.OnMessage(WixErrors.InvalidAddedFileRowWithoutSequence(fileRow.SourceLineNumbers, (string)fileRow[0]));
break;
}
// Set to 1 to prevent invalid IDT file from being generated
fileRow[7] = 1;
}
}
}
// process modified and unmodified rows
bool modifiedRow = false;
Row targetRow = new Row(null, table.Definition);
Row updatedRow = row;
for (int i = 0; i < row.Fields.Length; i++)
{
Field updatedField = row.Fields[i];
if (updatedField.Modified)
{
// set a different value in the target row to ensure this value will be modified during transform generation
if (ColumnType.Number == updatedField.Column.Type && !updatedField.Column.IsLocalizable)
{
if (null == updatedField.Data || 1 != (int)updatedField.Data)
{
targetRow[i] = 1;
}
else
{
targetRow[i] = 2;
}
}
else if (ColumnType.Object == updatedField.Column.Type)
{
if (null == emptyFile)
{
emptyFile = Path.Combine(this.TempFilesLocation, "empty");
}
targetRow[i] = emptyFile;
}
else
{
if ("0" != (string)updatedField.Data)
{
targetRow[i] = "0";
}
else
{
targetRow[i] = "1";
}
}
modifiedRow = true;
}
else if (ColumnType.Object == updatedField.Column.Type)
{
ObjectField objectField = (ObjectField)updatedField;
// create an empty file for comparing against
if (null == objectField.PreviousData)
{
if (null == emptyFile)
{
emptyFile = Path.Combine(this.TempFilesLocation, "empty");
}
targetRow[i] = emptyFile;
modifiedRow = true;
}
else if (!this.CompareFiles(objectField.PreviousData, (string)objectField.Data))
{
targetRow[i] = objectField.PreviousData;
modifiedRow = true;
}
}
else // unmodified
{
if (null != updatedField.Data)
{
targetRow[i] = updatedField.Data;
}
}
}
// modified rows and certain special rows go in the target and updated msi databases
if (modifiedRow ||
("Property" == table.Name &&
("ProductCode" == (string)row[0] ||
"ProductLanguage" == (string)row[0] ||
"ProductVersion" == (string)row[0] ||
"UpgradeCode" == (string)row[0])))
{
Table targetTable = targetOutput.EnsureTable(table.Definition);
targetTable.Rows.Add(targetRow);
Table updatedTable = updatedOutput.EnsureTable(table.Definition);
updatedTable.Rows.Add(updatedRow);
}
}
}
foreach (BinderExtension extension in this.Extensions)
{
extension.Finish(this.Transform);
}
// Any errors encountered up to this point can cause errors during generation.
if (Messaging.Instance.EncounteredError)
{
return;
}
string transformFileName = Path.GetFileNameWithoutExtension(this.OutputPath);
string targetDatabaseFile = Path.Combine(this.TempFilesLocation, String.Concat(transformFileName, "_target.msi"));
string updatedDatabaseFile = Path.Combine(this.TempFilesLocation, String.Concat(transformFileName, "_updated.msi"));
try
{
if (!String.IsNullOrEmpty(emptyFile))
{
using (FileStream fileStream = File.Create(emptyFile))
{
}
}
this.GenerateDatabase(targetOutput, targetDatabaseFile, false);
this.GenerateDatabase(updatedOutput, updatedDatabaseFile, true);
// make sure the directory exists
Directory.CreateDirectory(Path.GetDirectoryName(this.OutputPath));
// create the transform file
using (Database targetDatabase = new Database(targetDatabaseFile, OpenDatabase.ReadOnly))
{
using (Database updatedDatabase = new Database(updatedDatabaseFile, OpenDatabase.ReadOnly))
{
if (updatedDatabase.GenerateTransform(targetDatabase, this.OutputPath))
{
updatedDatabase.CreateTransformSummaryInfo(targetDatabase, this.OutputPath, (TransformErrorConditions)(transformFlags & 0xFFFF), (TransformValidations)((transformFlags >> 16) & 0xFFFF));
}
else
{
Messaging.Instance.OnMessage(WixErrors.NoDifferencesInTransform(this.Transform.SourceLineNumbers));
}
}
}
}
finally
{
if (!String.IsNullOrEmpty(emptyFile))
{
File.Delete(emptyFile);
}
}
}
