/// <summary>
/// Update/Fix all ProjectReference elements within the given project file.
/// </summary>
/// <param name="projectPath">The path to the MSBuild Project to fix ProjectElements in.</param>
/// <param name="projectLookupDictionary">A Dictionary from <see cref="LoadProjectGuids(string)"/> to perform lookups in.</param>
/// <param name="saveChanges">Indicates if this tool should save the changes to the target project file.</param>
/// <returns><c>true</c> if any ProjectReference tags within the given project are modified; otherwise, <c>false</c>.</returns>
internal static bool UpdateProjectReferences(string projectPath, IDictionary <string, string> projectLookupDictionary, bool saveChanges)
{
bool projectModified = false;
try
{
XDocument projXml = XDocument.Load(projectPath);
// Find all the ProjectReference Elements
IEnumerable <XElement> projectReferenceElements = MSBuildUtilities.GetProjectReferenceNodes(projXml);
foreach (XElement projectReferenceElement in projectReferenceElements)
{
if (FixProjectReference(projectReferenceElement, projectPath, projectLookupDictionary))
{
projectModified = true;
}
}
if (saveChanges && projectModified)
{
projXml.Save(projectPath);
}
}
catch (Exception ex)
{
string exception = $"Failed on project `{projectPath}`";
throw new InvalidOperationException(exception, ex);
}
return(projectModified);
}
/// <summary>
/// Given a <see cref="XElement"/> that represents an MSBuild
/// ProjectReference tag, validate that the relative path to
/// the dependency and the name of the dependency is correct.
/// </summary>
/// <param name="projectReference">A fragment that represents an MSBuild ProjectReference tag.</param>
/// <param name="projectPath">The path to the project that contained this fragment.</param>
/// <param name="projectLookupDictionary">A Dictionary from <see cref="LoadProjectGuids(string)"/> to perform lookups in.</param>
/// <returns><c>true</c> if the fragment was modified (or "fixed"); otherwise, <c>false</c>.</returns>
internal static bool FixProjectReference(XElement projectReference, string projectPath, IDictionary <string, string> projectLookupDictionary)
{
bool fragmentWasModified = false;
// The project directory needs the trailing slash to support relative path generation
string projectDirectory = Path.GetDirectoryName(projectPath);
string prIncludeRelativePath = MSBuildUtilities.GetProjectReferenceIncludeValue(projectReference, projectPath);
string prGuid = MSBuildUtilities.GetProjectReferenceGUID(projectReference, projectPath);
// Look it up in the Dictionary
string dictionaryLookupProjectPath = null;
if (!projectLookupDictionary.TryGetValue(prGuid, out dictionaryLookupProjectPath))
{
string prIncludeActualPath = Path.GetFullPath(prIncludeRelativePath, projectDirectory);
string exception = $"Project GUID `{prGuid}` does not exist in the lookup dictionary; according to the project it should be located here `{prIncludeActualPath}`; was it deleted?";
throw new InvalidOperationException(exception);
}
// Now that we have the found path from the dictionary convert it to a relative path
string prActualRelativePath = Path.GetRelativePath(projectDirectory, dictionaryLookupProjectPath);
// Fix up the Relative Path to contain the correct slashes
prActualRelativePath = prActualRelativePath.Replace(Path.DirectorySeparatorChar, '\\');
if (!prIncludeRelativePath.Equals(prActualRelativePath))
{
fragmentWasModified = true;
MSBuildUtilities.SetProjectReferenceIncludeValue(projectReference, prActualRelativePath);
}
// Get the name of the file that contains the reference; this will be in the Name Tag.
string prActualName = Path.GetFileNameWithoutExtension(dictionaryLookupProjectPath);
// Get the existing name in the project reference
string prExistingName = MSBuildUtilities.GetOrCreateProjectReferenceName(projectReference, projectPath);
if (!prExistingName.Equals(prActualName))
{
fragmentWasModified = true;
MSBuildUtilities.SetProjectReferenceName(projectReference, prActualName);
}
return(fragmentWasModified);
}
/// <summary>
/// Given a target directory spin for all project files (as defined by
/// <see cref="GetProjectsInDirectory(string)"/>).
/// </summary>
/// <param name="targetDirectory">The directory to scan.</param>
/// <returns>
/// <see cref="IDictionary{TKey, TValue}"/> where the <c>TKey</c> is
/// the ProjectGuid and the <c>TValue</c> is the path to the project
/// that contains that Guid.
/// </returns>
internal static IDictionary <string, string> LoadProjectGuids(string targetDirectory)
{
IEnumerable <string> projFilesInDirectory = GetProjectsInDirectory(targetDirectory);
ConcurrentDictionary <string, string> resultDictionary = new ConcurrentDictionary <string, string>(StringComparer.InvariantCultureIgnoreCase);
Parallel.ForEach(projFilesInDirectory, projFile =>
{
string projectGuid = MSBuildUtilities.GetMSBuildProjectGuid(projFile);
if (!resultDictionary.TryAdd(projectGuid, projFile))
{
string exception = $"Failed to add project `{projFile}` the GUID `{projectGuid}` already existed in project `{resultDictionary[projectGuid]}`";
throw new InvalidOperationException(exception);
}
}
);
return(resultDictionary);
}
