internal static bool TryUpdateUsage(string fileName, IPropertySymbol resource, string newName, out XamlFile result)
{
var xaml = XamlFile.Create(fileName);
var pattern = $"xmlns:(?<alias>\\w+)=\"clr-namespace:{resource.ContainingType.ContainingSymbol}(\"|;)";
if (Regex.Match(xaml.Text, pattern) is Match match &&
match.Success &&
match.Groups["alias"].Value is string alias &&
!string.IsNullOrEmpty(alias))
{
var oldProperty = $"{alias}:{resource.ContainingType.Name}.{resource.Name}";
var newProperty = $"{alias}:{resource.ContainingType.Name}.{newName}";
var updated = Replace(xaml.Text, " {0}}}", oldProperty, newProperty);
updated = Replace(updated, "({0})", oldProperty, newProperty);
updated = Replace(updated, "\"{0}\"", oldProperty, newProperty);
if (updated != xaml.Text)
{
result = new XamlFile(updated, xaml.Encoding);
return(true);
}
}
result = default(XamlFile);
return(false);
}
private static void UpdateXaml(Project project, IPropertySymbol property, string newName)
{
if (project.MetadataReferences.TryFirst(x => x.Display.EndsWith("System.Xaml.dll"), out _))
{
var directory = Path.GetDirectoryName(project.FilePath);
var csprojText = File.ReadAllText(project.FilePath);
if (Regex.IsMatch(csprojText, "<TargetFrameworks?\b"))
{
var csproj = XDocument.Parse(csprojText);
if (csproj.Root is XElement root)
{
foreach (var page in root.Descendants().Where(x => x.Name.LocalName == "Page"))
{
if (page.Attribute("Include") is XAttribute attribute &&
attribute.Value.EndsWith(".xaml"))
{
var fileName = Path.Combine(directory, attribute.Value);
if (XamlFile.TryUpdateUsage(fileName, property, newName, out var xamlFile))
{
File.WriteAllText(fileName, xamlFile.Text, xamlFile.Encoding);
}
}
}
}
}
else
{
foreach (var fileName in Directory.EnumerateFiles(directory, "*.xaml", SearchOption.AllDirectories))
{
if (XamlFile.TryUpdateUsage(fileName, property, newName, out var xamlFile))
{
File.WriteAllText(fileName, xamlFile.Text, xamlFile.Encoding);
}
}
}
}
}
