/// <summary>
/// Used to load information about default MSBuild tasks i.e. tasks that do not need to be explicitly declared in projects
/// with the <UsingTask> element. Default task information is read from special files, which are located in the same
/// directory as the MSBuild binaries.
/// </summary>
/// <remarks>
/// 1) a default tasks file needs the <Project> root tag in order to be well-formed
/// 2) the XML declaration tag <?xml ...> is ignored
/// 3) comment tags are always ignored regardless of their placement
/// 4) the rest of the tags are expected to be <UsingTask> tags
/// </remarks>
private void RegisterDefaultTasks(BuildEventContext buildEventContext)
{
if (!defaultTasksRegistrationAttempted)
{
try
{
this.defaultTaskRegistry = new TaskRegistry();
string[] defaultTasksFiles = { };
try
{
defaultTasksFiles = getFiles(toolset.ToolsPath, defaultTasksFilePattern);
if (defaultTasksFiles.Length == 0)
{
loggingServices.LogWarning(buildEventContext, new BuildEventFileInfo(/* this warning truly does not involve any file */ String.Empty),
"DefaultTasksFileLoadFailureWarning",
defaultTasksFilePattern, toolset.ToolsPath, String.Empty);
}
}
// handle security problems when finding the default tasks files
catch (UnauthorizedAccessException e)
{
loggingServices.LogWarning(buildEventContext, new BuildEventFileInfo(/* this warning truly does not involve any file */ String.Empty),
"DefaultTasksFileLoadFailureWarning",
defaultTasksFilePattern, toolset.ToolsPath, e.Message);
}
// handle problems when reading the default tasks files
catch (Exception e) // Catching Exception, but rethrowing unless it's an IO related exception.
{
if (ExceptionHandling.NotExpectedException(e))
{
throw;
}
loggingServices.LogWarning(buildEventContext, new BuildEventFileInfo(/* this warning truly does not involve any file */ String.Empty),
"DefaultTasksFileLoadFailureWarning",
defaultTasksFilePattern, toolset.ToolsPath, e.Message);
}
BuildPropertyGroup propertyBag = null;
foreach (string defaultTasksFile in defaultTasksFiles)
{
try
{
XmlDocument defaultTasks = loadXmlFromPath(defaultTasksFile);
// look for the first root tag that is not a comment or an XML declaration -- this should be the <Project> tag
// NOTE: the XML parser will guarantee there is only one real root element in the file
// but we need to find it amongst the other types of XmlNode at the root.
foreach (XmlNode topLevelNode in defaultTasks.ChildNodes)
{
if (XmlUtilities.IsXmlRootElement(topLevelNode))
{
ProjectErrorUtilities.VerifyThrowInvalidProject(topLevelNode.LocalName == XMakeElements.project,
topLevelNode, "UnrecognizedElement", topLevelNode.Name);
ProjectErrorUtilities.VerifyThrowInvalidProject((topLevelNode.Prefix.Length == 0) && (String.Equals(topLevelNode.NamespaceURI, XMakeAttributes.defaultXmlNamespace, StringComparison.OrdinalIgnoreCase)),
topLevelNode, "ProjectMustBeInMSBuildXmlNamespace", XMakeAttributes.defaultXmlNamespace);
// the <Project> tag can only the XML namespace -- no other attributes
foreach (XmlAttribute projectAttribute in topLevelNode.Attributes)
{
ProjectXmlUtilities.VerifyThrowProjectInvalidAttribute(projectAttribute.Name == XMakeAttributes.xmlns, projectAttribute);
}
// look at all the child tags of the <Project> root tag we found
foreach (XmlNode usingTaskNode in topLevelNode.ChildNodes)
{
if (usingTaskNode.NodeType != XmlNodeType.Comment)
{
ProjectErrorUtilities.VerifyThrowInvalidProject(usingTaskNode.Name == XMakeElements.usingTask,
usingTaskNode, "UnrecognizedElement", usingTaskNode.Name);
// Initialize the property bag if it hasn't been already.
if (propertyBag == null)
{
// Set the value of the MSBuildBinPath/ToolsPath properties.
BuildPropertyGroup reservedPropertyBag = new BuildPropertyGroup();
reservedPropertyBag.SetProperty(
new BuildProperty(ReservedPropertyNames.binPath, EscapingUtilities.Escape(toolset.ToolsPath),
PropertyType.ReservedProperty));
reservedPropertyBag.SetProperty(
new BuildProperty(ReservedPropertyNames.toolsPath, EscapingUtilities.Escape(toolset.ToolsPath),
PropertyType.ReservedProperty));
// Also set MSBuildAssemblyVersion so that the tasks file can tell between v4 and v12 MSBuild
reservedPropertyBag.SetProperty(
new BuildProperty(ReservedPropertyNames.assemblyVersion, Constants.AssemblyVersion,
PropertyType.ReservedProperty));
propertyBag = new BuildPropertyGroup();
propertyBag.ImportInitialProperties(parentEngine.EnvironmentProperties, reservedPropertyBag, BuildProperties, parentEngine.GlobalProperties);
}
defaultTaskRegistry.RegisterTask(new UsingTask((XmlElement)usingTaskNode, true), new Expander(propertyBag), loggingServices, buildEventContext);
}
}
break;
}
}
}
// handle security problems when loading the default tasks file
catch (UnauthorizedAccessException e)
{
loggingServices.LogError(buildEventContext, new BuildEventFileInfo(defaultTasksFile), "DefaultTasksFileFailure", e.Message);
break;
}
// handle problems when loading the default tasks file
catch (IOException e)
{
loggingServices.LogError(buildEventContext, new BuildEventFileInfo(defaultTasksFile), "DefaultTasksFileFailure", e.Message);
break;
}
// handle XML errors in the default tasks file
catch (XmlException e)
{
ProjectFileErrorUtilities.VerifyThrowInvalidProjectFile(false, new BuildEventFileInfo(e),
"DefaultTasksFileFailure", e.Message);
}
}
}
finally
{
defaultTasksRegistrationAttempted = true;
}
}
}
internal BuildItemGroupChildXml(XmlElement element, ChildType childTypeExpected)
{
ErrorUtilities.VerifyThrow(element != null, "Need an XML node.");
ErrorUtilities.VerifyThrowNoAssert(childTypeExpected != ChildType.Invalid, "Can't expect invalid childtype");
ProjectXmlUtilities.VerifyThrowProjectValidNameAndNamespace(element);
this.element = element;
// Loop through each of the attributes on the item element.
foreach (XmlAttribute attribute in element.Attributes)
{
switch (attribute.Name)
{
case XMakeAttributes.include:
this.includeAttribute = attribute;
break;
case XMakeAttributes.exclude:
this.excludeAttribute = attribute;
break;
case XMakeAttributes.condition:
this.conditionAttribute = attribute;
break;
case XMakeAttributes.xmlns:
// We already verified that the namespace is correct
break;
case XMakeAttributes.remove:
this.removeAttribute = attribute;
break;
case XMakeAttributes.keepMetadata:
case XMakeAttributes.removeMetadata:
case XMakeAttributes.keepDuplicates:
// Ignore these - they are part of the new OM.
break;
default:
ProjectXmlUtilities.ThrowProjectInvalidAttribute(attribute);
break;
}
}
this.childType = ChildType.Invalid;
// Default to modify, if that's one of the child types we are told to expect.
if ((childTypeExpected & ChildType.BuildItemModify) == ChildType.BuildItemModify)
{
this.childType = ChildType.BuildItemModify;
}
if (this.includeAttribute != null)
{
ProjectXmlUtilities.VerifyThrowProjectInvalidAttribute((childTypeExpected & ChildType.BuildItemAdd) == ChildType.BuildItemAdd, includeAttribute);
ProjectErrorUtilities.VerifyThrowInvalidProject(Include.Length > 0, element, "MissingRequiredAttribute", XMakeAttributes.include, element.Name);
ProjectXmlUtilities.VerifyThrowProjectInvalidAttribute(removeAttribute == null, removeAttribute);
this.childType = ChildType.BuildItemAdd;
}
if (this.excludeAttribute != null)
{
ProjectXmlUtilities.VerifyThrowProjectInvalidAttribute((childTypeExpected & ChildType.BuildItemAdd) == ChildType.BuildItemAdd, excludeAttribute);
ProjectErrorUtilities.VerifyThrowInvalidProject(Include.Length > 0, element, "MissingRequiredAttribute", XMakeAttributes.include, element.Name);
ProjectXmlUtilities.VerifyThrowProjectInvalidAttribute(removeAttribute == null, removeAttribute);
this.childType = ChildType.BuildItemAdd;
}
if (this.removeAttribute != null)
{
ProjectXmlUtilities.VerifyThrowProjectInvalidAttribute((childTypeExpected & ChildType.BuildItemRemove) == ChildType.BuildItemRemove, removeAttribute);
ProjectErrorUtilities.VerifyThrowInvalidProject(Remove.Length > 0, element, "MissingRequiredAttribute", XMakeAttributes.remove, element.Name);
ProjectXmlUtilities.VerifyThrowProjectInvalidAttribute(includeAttribute == null, includeAttribute);
ProjectXmlUtilities.VerifyThrowProjectInvalidAttribute(excludeAttribute == null, excludeAttribute);
this.childType = ChildType.BuildItemRemove;
}
if (this.childType == ChildType.Invalid)
{
// So the xml wasn't consistent with any of the child types that we were told to expect.
// Figure out the most reasonable message to produce.
if ((childTypeExpected & ChildType.BuildItemAdd) == ChildType.BuildItemAdd)
{
ProjectErrorUtilities.VerifyThrowInvalidProject(Include.Length > 0, element, "MissingRequiredAttribute", XMakeAttributes.include, element.Name);
}
else if ((childTypeExpected & ChildType.BuildItemRemove) == ChildType.BuildItemRemove)
{
ProjectErrorUtilities.VerifyThrowInvalidProject(Remove.Length > 0, element, "MissingRequiredAttribute", XMakeAttributes.remove, element.Name);
}
else
{
ErrorUtilities.ThrowInternalError("Unexpected child type");
}
}
// Validate each of the child nodes beneath the item.
List <XmlElement> children = ProjectXmlUtilities.GetValidChildElements(element);
if (this.childType == ChildType.BuildItemRemove && children.Count != 0)
{
ProjectErrorUtilities.ThrowInvalidProject(element, "ChildElementsBelowRemoveNotAllowed", children[0].Name);
}
foreach (XmlElement child in children)
{
ProjectXmlUtilities.VerifyThrowProjectValidNameAndNamespace(child);
ProjectErrorUtilities.VerifyThrowInvalidProject(!FileUtilities.IsItemSpecModifier(child.Name), child, "ItemSpecModifierCannotBeCustomMetadata", child.Name);
ProjectErrorUtilities.VerifyThrowInvalidProject(XMakeElements.IllegalItemPropertyNames[child.Name] == null, child, "CannotModifyReservedItemMetadata", child.Name);
}
}
