private async Task Validate(List <string> errors)
{
if (SourceFile != null && !MarkdownProjectRoot.FileExists(SourceFile))
{
errors.Add($"File not found: {SourceFile.Value}");
}
if (string.IsNullOrEmpty(Package) && Project == null)
{
errors.Add("No project file or package specified");
}
if (Package != null)
{
try
{
var package = await PackageRegistry.Find <IPackage>(Package);
}
catch (PackageNotFoundException e)
{
errors.Add(e.Message);
return;
}
}
if (Project != null)
{
var packageName = GetPackageNameFromProjectFile(Project);
if (packageName == null)
{
errors.Add($"No project file could be found at path {MarkdownProjectRoot.GetFullyQualifiedPath(new RelativeDirectoryPath("."))}");
}
}
}
private string GetDestinationFileAbsolutePath()
{
var file = DestinationFile ?? SourceFile;
return(file == null
? string.Empty
: MarkdownProjectRoot
.GetFullyQualifiedPath(file)
.FullName);
}
public override async Task <CodeBlockContentFetchResult> TryGetExternalContent()
{
string content = null;
var errors = new List <string>();
await Validate(errors);
if (!errors.Any())
{
if (SourceFile == null)
{
return(CodeBlockContentFetchResult.None);
}
content = MarkdownProjectRoot.ReadAllText(SourceFile);
if (string.IsNullOrWhiteSpace(Region))
{
return(errors.Any()
? CodeBlockContentFetchResult.Failed(errors)
: CodeBlockContentFetchResult.Succeeded(content));
}
var sourceText = SourceText.From(content);
var sourceFileAbsolutePath = GetSourceFileAbsolutePath();
var buffers = sourceText.ExtractBuffers(sourceFileAbsolutePath)
.Where(b => b.Id.RegionName == Region)
.ToArray();
if (buffers.Length == 0)
{
errors.Add($"Region \"{Region}\" not found in file {sourceFileAbsolutePath}");
}
else if (buffers.Length > 1)
{
errors.Add($"Multiple regions found: {Region}");
}
else
{
content = buffers[0].Content;
}
}
return(errors.Any()
? CodeBlockContentFetchResult.Failed(errors)
: CodeBlockContentFetchResult.Succeeded(content));
}
private string GetSourceFileAbsolutePath()
{
return(MarkdownProjectRoot.GetFullyQualifiedPath(SourceFile).FullName);
}
