/// <summary>
/// Sets the value of an attribute, removing the attribute if the value is null, but still setting it
/// if the value is the empty string. Returns the attribute, or null if it was removed.
/// UNDONE: Make this return a bool if the attribute did not change, so we can avoid dirtying.
/// </summary>
internal static XmlAttributeWithLocation SetOrRemoveAttribute(XmlElementWithLocation element, string name, string value, bool allowSettingEmptyAttributes)
{
if (value == null || (!allowSettingEmptyAttributes && value.Length == 0))
{
// The caller passed in a null or an empty value. So remove the attribute.
element.RemoveAttribute(name);
return null;
}
else
{
// Set the new attribute value
element.SetAttribute(name, value);
XmlAttributeWithLocation attribute = (XmlAttributeWithLocation)element.Attributes[name];
return attribute;
}
}
/// <summary>
/// Given an element corresponding to a P2P reference, create the appropriate element in the new project
/// </summary>
/// <param name="referenceElement"></param>
/// <param name="referencesItemGroup"></param>
/// <param name="referenceName"></param>
/// <param name="referencedProjectGuid"></param>
/// <returns></returns>
private ProjectItemElement ConvertProjectToProjectReference(XmlElementWithLocation referenceElement, ProjectItemGroupElement referencesItemGroup, string referenceName, ref string referencedProjectGuid)
{
ProjectItemElement newReferenceItem;
// This is a project-to-project reference.
// This gets added as a new XMake item of type "ProjectReference".
// The "Include" attribute should be the relative path from the
// current project to the referenced project file. For example,
// -----------------------------------------------------------------------
// Everett format:
// ===============
// <Reference
// Name = "XMakeTasks"
// Project = "{44342961-78F4-4F98-AFD6-720DA6E648A2}"
// Package = "{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}"
// />
// -----------------------------------------------------------------------
// XMake format:
// =============
// <ProjectReference Include = "..\XMakeTasks\XMakeTasks.csproj">
// <Name>XMakeTasks</Name>
// <Project>{44342961-78F4-4F98-AFD6-720DA6E648A2}</Project>
// <Package>{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</Package>
// </ProjectReference>
// -----------------------------------------------------------------------
// Apparently, sometimes project reference guids contain additional goo with relative project path.
// Just strip it off. The project system does the same thing, and by doing this early we make
// sure that we have the correct guid attribute in the project file and ResolveNonMSBuildReferences
// does not complain about invalid characters there which causes all the references to fail to resolve.
int barIndex = referencedProjectGuid.IndexOf('|');
if (barIndex != -1)
{
referencedProjectGuid = referencedProjectGuid.Remove(barIndex);
referenceElement.SetAttribute(VSProjectAttributes.project, referencedProjectGuid);
}
string pathToReferencedProject = this.GetRelativePathToReferencedProject(referencedProjectGuid);
if (pathToReferencedProject != null)
{
// For VSD Projects, we want to transform all Everett ( .csdproj & .vbdproj ) project 2 project references into
// Whidbey ( .csproj & .vbproj ) references.
if (0 == String.Compare(Path.GetExtension(pathToReferencedProject),
XMakeProjectStrings.csdprojFileExtension,
StringComparison.OrdinalIgnoreCase))
{
pathToReferencedProject = Path.ChangeExtension(pathToReferencedProject, XMakeProjectStrings.csprojFileExtension);
}
else if (0 == String.Compare(Path.GetExtension(pathToReferencedProject),
XMakeProjectStrings.vbdprojFileExtension,
StringComparison.OrdinalIgnoreCase))
{
pathToReferencedProject = Path.ChangeExtension(pathToReferencedProject, XMakeProjectStrings.vbprojFileExtension);
}
}
// Add a new item to XMake of type "ProjectReference". If we were able to find
// the relative path to the project, use it for the "Include", otherwise just use
// the project name.
string value = (pathToReferencedProject != null) ? pathToReferencedProject : referenceName;
newReferenceItem = referencesItemGroup.AddItem(XMakeProjectStrings.projectReference, ProjectCollection.Escape(value));
return newReferenceItem;
}
