/// <summary>
/// Merge a sequence of DefaultStyles into a single style.
/// </summary>
/// <param name="styles">Sequence of DefaultStyles.</param>
/// <returns>Merged DefaultStyle.</returns>
public static DefaultStyle Merge(IEnumerable <DefaultStyle> styles)
{
var combined = new DefaultStyle();
if (styles != null)
{
foreach (DefaultStyle style in styles)
{
combined.Merge(style);
}
}
return(combined);
}
public override bool Execute()
{
Order = 0;
Log.LogMessage(MessageImportance.Low, "Merging default styles into generic.xaml.");
// Get the original generic.xaml
string originalPath = Path.Combine(ProjectDirectory, Path.Combine("themes", "generic.xaml"));
if (!File.Exists(originalPath))
{
Log.LogError("{0} does not exist!", originalPath);
return(false);
}
Log.LogMessage(MessageImportance.Low, "Found original generic.xaml at {0}.", originalPath);
string original = null;
Encoding encoding = Encoding.Default;
try
{
using (StreamReader reader = new StreamReader(File.Open(originalPath, FileMode.Open, FileAccess.Read)))
{
original = reader.ReadToEnd();
encoding = reader.CurrentEncoding;
}
}
catch (Exception ex)
{
Log.LogErrorFromException(ex);
return(false);
}
// Create the merged generic.xaml
List <DefaultStyle> styles = new List <DefaultStyle>();
foreach (ITaskItem item in DefaultStyles)
{
string path = Path.Combine(ProjectDirectory, item.ItemSpec);
if (!File.Exists(path))
{
Log.LogWarning("Ignoring missing DefaultStyle {0}.", path);
continue;
}
try
{
Log.LogMessage(MessageImportance.Low, "Processing file {0}.", item.ItemSpec);
styles.Add(DefaultStyle.Load(path));
}
catch (Exception ex)
{
Log.LogErrorFromException(ex);
}
}
string merged = null;
try
{
merged = DefaultStyle.Merge(styles).GenerateXaml();
}
catch (InvalidOperationException ex)
{
Log.LogErrorFromException(ex);
return(false);
}
// Write the new generic.xaml
if (original != merged)
{
Log.LogMessage(MessageImportance.Low, "Writing merged generic.xaml.");
try
{
// Could interact with the source control system / TFS here
File.SetAttributes(originalPath, FileAttributes.Normal);
Log.LogMessage("Removed any read-only flag for generic.xaml.");
File.WriteAllText(originalPath, merged, encoding);
Log.LogMessage("Successfully merged generic.xaml.");
}
catch (Exception ex)
{
Log.LogErrorFromException(ex);
return(false);
}
}
else
{
Log.LogMessage("Existing generic.xaml was up to date.");
}
return(true);
}