// ------------------------------------------------------------------
#endregion
#region Private methods.
// ------------------------------------------------------------------
/// <summary>
/// Process one single URI with a document behind (i.e. no
/// resource URI).
/// </summary>
/// <param name="uriInfo">The URI info.</param>
/// <param name="depth">The depth.</param>
private void ProcessUrl(
DownloadedResourceInformation uriInfo,
int depth )
{
Trace.WriteLine(
string.Format(
@"Processing URI '{0}', with depth {1}.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth ) );
if ( _settings.Options.MaximumLinkDepth > 0 &&
depth > _settings.Options.MaximumLinkDepth )
{
Trace.WriteLine(
string.Format(
@"Depth {1} exceeds maximum configured depth. Ending recursion " +
@"at URI '{0}'.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth ) );
}
else if ( depth > _maxDepth )
{
Trace.WriteLine(
string.Format(
@"Depth {1} exceeds maximum allowed recursion depth. " +
@"Ending recursion at URI '{0}' to possible continue later.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth ) );
// Add myself to start there later.
// But only if not yet process, otherwise we would never finish.
if ( _settings.HasDownloadedUri( uriInfo ) )
{
Trace.WriteLine(
string.Format(
@"URI '{0}' was already downloaded. NOT continuing later.",
uriInfo.AbsoluteUri.AbsoluteUri ) );
}
else
{
_settings.AddDownloadedResourceInfo( uriInfo );
// Finished the function.
Trace.WriteLine(
string.Format(
@"Added URI '{0}' to continue later.",
uriInfo.AbsoluteUri.AbsoluteUri ) );
}
}
else
{
// If we are in asynchron mode, periodically check for stopps.
if ( processAsyncBackgroundWorker != null )
{
if ( processAsyncBackgroundWorker.CancellationPending )
{
//throw new StopProcessingException();
}
}
// --
// Notify event sinks about this URL.
if ( ProcessingUrl != null )
{
ProcessingUrlEventArgs e = new ProcessingUrlEventArgs(
uriInfo,
depth );
ProcessingUrl( this, e );
}
// --
if ( uriInfo.IsProcessableUri )
{
if ( _settings.HasDownloadedUri( uriInfo ) )
{
Trace.WriteLine(
string.Format(
@"URI '{0}' was already downloaded. Skipping.",
uriInfo.AbsoluteUri.AbsoluteUri ) );
}
else
{
Trace.WriteLine(
string.Format(
@"URI '{0}' was not already downloaded. Processing.",
uriInfo.AbsoluteUri.AbsoluteUri ) );
if ( uriInfo.LinkType == UriType.Resource )
{
Trace.WriteLine(
string.Format(
@"Processing resource URI '{0}', with depth {1}.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth ) );
byte[] binaryContent;
ResourceDownloader.DownloadBinary(
uriInfo.AbsoluteUri,
out binaryContent,
_settings.Options );
ResourceStorer storer =
new ResourceStorer( _settings );
storer.StoreBinary(
binaryContent,
uriInfo );
_settings.AddDownloadedResourceInfo( uriInfo );
_settings.PersistDownloadedResourceInfo( uriInfo );
}
else
{
Trace.WriteLine(
string.Format(
@"Processing content URI '{0}', with depth {1}.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth ) );
string textContent;
string encodingName;
Encoding encoding;
byte[] binaryContent;
ResourceDownloader.DownloadHtml(
uriInfo.AbsoluteUri,
out textContent,
out encodingName,
out encoding,
out binaryContent,
_settings.Options );
ResourceParser parser = new ResourceParser(
_settings,
uriInfo,
textContent );
List<UriResourceInformation> linkInfos =
parser.ExtractLinks();
ResourceRewriter rewriter =
new ResourceRewriter( _settings );
textContent = rewriter.ReplaceLinks(
textContent,
uriInfo );
ResourceStorer storer =
new ResourceStorer( _settings );
storer.StoreHtml(
textContent,
encoding,
uriInfo );
// Add before parsing childs.
_settings.AddDownloadedResourceInfo( uriInfo );
foreach ( UriResourceInformation linkInfo in linkInfos )
{
DownloadedResourceInformation dlInfo =
new DownloadedResourceInformation(
linkInfo,
uriInfo.LocalFolderPath,
uriInfo.LocalBaseFolderPath );
// Recurse.
ProcessUrl( dlInfo, depth + 1 );
// Do not return or break immediately if too deep,
// because this would omit certain pages at this
// recursion level.
}
// Persist after completely parsed childs.
_settings.PersistDownloadedResourceInfo( uriInfo );
}
Trace.WriteLine(
string.Format(
@"Finished processing URI '{0}'.",
uriInfo.AbsoluteUri.AbsoluteUri ) );
}
}
else
{
Trace.WriteLine(
string.Format(
@"URI '{0}' is not processable. Skipping.",
uriInfo.AbsoluteUri.AbsoluteUri ) );
}
}
}
// ------------------------------------------------------------------
#endregion
#region Private methods.
// ------------------------------------------------------------------
/// <summary>
/// Process one single URI with a document behind (i.e. no
/// resource URI).
/// </summary>
/// <param name="uriInfo">The URI info.</param>
/// <param name="depth">The depth.</param>
private void ProcessUrl(
DownloadedResourceInformation uriInfo,
int depth)
{
Trace.WriteLine(
string.Format(
@"Processing URI '{0}', with depth {1}.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth));
string ext = DownloadedResourceInformation.CorrectFileExtension(DownloadedResourceInformation.TryExtractFileExtension(uriInfo.AbsoluteUri));
if (ext == ".html" && _settings.Options.MaximumLinkDepth >= 0 &&
depth > _settings.Options.MaximumLinkDepth)
{
Trace.WriteLine(
string.Format(
@"Depth {1} exceeds maximum configured depth. Ending recursion " +
@"at URI '{0}'.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth));
}
else if (depth > _maxDepth)
{
Trace.WriteLine(
string.Format(
@"Depth {1} exceeds maximum allowed recursion depth. " +
@"Ending recursion at URI '{0}' to possible continue later.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth));
// Add myself to start there later.
// But only if not yet process, otherwise we would never finish.
if (_settings.HasDownloadedUri(uriInfo))
{
Trace.WriteLine(
string.Format(
@"URI '{0}' was already downloaded. NOT continuing later.",
uriInfo.AbsoluteUri.AbsoluteUri));
}
else
{
_settings.AddDownloadedResourceInfo(uriInfo);
// Finished the function.
Trace.WriteLine(
string.Format(
@"Added URI '{0}' to continue later.",
uriInfo.AbsoluteUri.AbsoluteUri));
}
}
else
{
// If we are in asynchron mode, periodically check for stopps.
if (processAsyncBackgroundWorker != null)
{
if (processAsyncBackgroundWorker.CancellationPending)
{
throw new StopProcessingException();
}
}
// --
// Notify event sinks about this URL.
if (ProcessingUrl != null)
{
ProcessingUrlEventArgs e = new ProcessingUrlEventArgs(
uriInfo,
depth);
ProcessingUrl(this, e);
}
// --
if (uriInfo.IsProcessableUri)
{
if (_settings.HasDownloadedUri(uriInfo))
{
Trace.WriteLine(
string.Format(
@"URI '{0}' was already downloaded. Skipping.",
uriInfo.AbsoluteUri.AbsoluteUri));
}
else
{
Trace.WriteLine(
string.Format(
@"URI '{0}' was not already downloaded. Processing.",
uriInfo.AbsoluteUri.AbsoluteUri));
if (uriInfo.LinkType == UriType.Resource)
{
Trace.WriteLine(
string.Format(
@"Processing resource URI '{0}', with depth {1}.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth));
byte[] binaryContent;
ResourceDownloader.DownloadBinary(
uriInfo.AbsoluteUri,
out binaryContent,
_settings.Options);
ResourceStorer storer =
new ResourceStorer(_settings);
storer.StoreBinary(
binaryContent,
uriInfo);
_settings.AddDownloadedResourceInfo(uriInfo);
_settings.PersistDownloadedResourceInfo(uriInfo);
}
else
{
Trace.WriteLine(
string.Format(
@"Processing content URI '{0}', with depth {1}.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth));
string textContent;
string encodingName;
Encoding encoding;
byte[] binaryContent;
ResourceDownloader.DownloadHtml(
uriInfo.AbsoluteUri,
out textContent,
out encodingName,
out encoding,
out binaryContent,
_settings.Options);
ResourceParser parser = new ResourceParser(
_settings,
uriInfo,
textContent);
List <UriResourceInformation> linkInfos =
parser.ExtractLinks();
ResourceRewriter rewriter =
new ResourceRewriter(_settings);
textContent = rewriter.ReplaceLinks(
textContent,
uriInfo);
ResourceStorer storer =
new ResourceStorer(_settings);
storer.StoreHtml(
textContent,
encoding,
uriInfo);
// Add before parsing childs.
_settings.AddDownloadedResourceInfo(uriInfo);
foreach (UriResourceInformation linkInfo in linkInfos)
{
DownloadedResourceInformation dlInfo =
new DownloadedResourceInformation(
linkInfo,
uriInfo.LocalFolderPath,
uriInfo.LocalBaseFolderPath);
// Recurse.
ProcessUrl(dlInfo, depth + 1);
// Do not return or break immediately if too deep,
// because this would omit certain pages at this
// recursion level.
}
// Persist after completely parsed childs.
_settings.PersistDownloadedResourceInfo(uriInfo);
}
Trace.WriteLine(
string.Format(
@"Finished processing URI '{0}'.",
uriInfo.AbsoluteUri.AbsoluteUri));
}
}
else
{
Trace.WriteLine(
string.Format(
@"URI '{0}' is not processable. Skipping.",
uriInfo.AbsoluteUri.AbsoluteUri));
}
}
}
// ------------------------------------------------------------------
/// <summary>
/// Process one single URI with a document behind (i.e. no
/// resource URI).
/// </summary>
/// <param name="uriInfo">The URI info.</param>
/// <param name="depth">The depth.</param>
private void ProcessUrl(
DownloadedResourceInformation uriInfo,
int depth, List<iCollector> git, List<iFollower> folo)
{
Console.WriteLine(
string.Format(
@"Processing URI '{0}', with depth {1}.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth));
bool blnFollow = true;
//Check to see if the uriInfo is followable by an internal list
if (depth > 0)
blnFollow = ((from f in folo.ToList()
let matches = f.pattern.Matches(uriInfo.AbsoluteUri.AbsoluteUri.ToString())
where matches.Count > 0 && f.depth == depth
select f).Count()) > 0 ? true : false; //return true if follow exists.
if (_settings.Options.MaximumLinkDepth > -1 &&
depth > _settings.Options.MaximumLinkDepth)
{
Console.WriteLine(
string.Format(
@"Depth {1} exceeds maximum configured depth. Ending recursion " +
@"at URI '{0}'.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth));
}
else if (!blnFollow)
{
Console.WriteLine(
string.Format(
@"Follower {1} exceeds maximum configured depth. Not following " +
@" URI '{0}'.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth));
//Fake our way into it.
//_settings.AddDownloadedResourceInfo(uriInfo);
}
else if (depth > _maxDepth)
{
Console.WriteLine(
string.Format(
@"Depth {1} exceeds maximum allowed recursion depth. " +
@"Ending recursion at URI '{0}' to possible continue later.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth));
// Add myself to start there later.
// But only if not yet process, otherwise we would never finish.
if (_settings.HasDownloadedUri(uriInfo))
{
Console.WriteLine(
string.Format(
@"URI '{0}' was already downloaded. NOT continuing later.",
uriInfo.AbsoluteUri.AbsoluteUri));
}
else
{
_settings.AddDownloadedResourceInfo(uriInfo);
// Finished the function.
Console.WriteLine(
string.Format(
@"Added URI '{0}' to continue later.",
uriInfo.AbsoluteUri.AbsoluteUri));
}
}
else
{
// If we are in asynchron mode, periodically check for stops.
if (processAsyncBackgroundWorker != null)
{
if (processAsyncBackgroundWorker.CancellationPending)
{
throw new StopProcessingException();
}
}
// --
// Notify event sinks about this URL.
if (ProcessingUrl != null)
{
ProcessingUrlEventArgs e = new ProcessingUrlEventArgs(
uriInfo,
depth);
ProcessingUrl(this, e);
}
// --
if (uriInfo.IsProcessableUri)
{
if (_settings.HasDownloadedUri(uriInfo))
{
Console.WriteLine(
string.Format(
@"URI '{0}' was already downloaded. Skipping.",
uriInfo.AbsoluteUri.AbsoluteUri));
}
else
{
Console.WriteLine(
string.Format(
@"URI '{0}' was not already downloaded. Processing.",
uriInfo.AbsoluteUri.AbsoluteUri));
//Switch case variables.
string textContent;
string encodingName;
Encoding encoding;
byte[] binaryContent;
//Local storage.
ResourceStorer storer = new ResourceStorer(_settings);
ResourceParser parser = null;
List<UriResourceInformation> linkInfos = null;
List<iCollector> req = null;
switch (uriInfo.LinkType)
{
case UriType.Content:
Console.WriteLine(string.Format(@"Processing content URI '{0}', with depth {1}.",
uriInfo.AbsoluteUri.AbsoluteUri, depth));
//Grab the page content.
ResourceDownloader.DownloadHtml(
uriInfo.AbsoluteUri,
out textContent,
out encodingName,
out encoding,
out binaryContent,
_settings.Options);
//Fire-up resource parser (A, FORMS, IMG) parser.
parser = new ResourceParser(
_settings,
uriInfo,
textContent);
//Grab all the Git collector requests, that match the Uri.
req = (from g in _settings.Options.GitCollectionRequest
where g.pageType == UriType.Content
&& uriInfo.AbsoluteUri.AbsoluteUri.ToString().Contains(g.pageName)
&& !(from o in _settings.Parsings
where o.pageType == g.pageType
select o.source.AbsoluteUri.AbsoluteUri)
.Contains(uriInfo.AbsoluteUri.AbsoluteUri)
select g.Clone()).ToList();
//Have valid requests?
if (req.Count() > 0)
{
//Persist the collector results.
_settings.PersistCollectorResultInfo(parser.ExtractCollectorRequest(req));
}
//Process link extraction.
linkInfos = parser.ExtractLinks();
// Add before parsing childs.
_settings.AddDownloadedResourceInfo(uriInfo);
foreach (UriResourceInformation linkInfo in linkInfos)
{
DownloadedResourceInformation dlInfo =
new DownloadedResourceInformation(
linkInfo,
uriInfo.LocalFolderPath,
uriInfo.LocalBaseFolderPath,
linkInfo.Parent,
depth + 1);
// Recurse.
ProcessUrl(dlInfo, depth + 1, git, folo);
// Do not return or break immediately if too deep,
// because this would omit certain pages at this
// recursion level.
}
// Persist after completely parsed childs.
_settings.PersistDownloadedResourceInfo(uriInfo);
break;
case UriType.Resource:
//Console.WriteLine(
//string.Format(
// @"Processing resource URI '{0}', with depth {1}.",
// uriInfo.AbsoluteUri.AbsoluteUri,
// depth));
//Scrape Resource (IMG, JS)
//ResourceDownloader.DownloadBinary(
// uriInfo.AbsoluteUri,
// out binaryContent,
// _settings.Options);
//storer = new ResourceStorer(_settings);
//Save the resource (IMG, JS)
//storer.StoreBinary(
// binaryContent,
// uriInfo);
//Act like we did it.
_settings.AddDownloadedResourceInfo(uriInfo);
_settings.PersistDownloadedResourceInfo(uriInfo);
break;
case UriType.Form:
Console.WriteLine(
string.Format(
@"Processing Form POST to URI '{0}', with depth {1}.",
uriInfo.AbsoluteUri.AbsoluteUri,
depth));
//Grab the Form response content.
ResourceDownloader.DownloadForm(
uriInfo.AbsoluteUri,
out textContent,
out encodingName,
out encoding,
out binaryContent,
_settings.Options);
//Fire-up resource parser (A, FORMS, IMG) parser.
parser = new ResourceParser(
_settings,
uriInfo,
textContent);
var w = _settings.Parsings;
//Grab all the Git collector requests, that match the Uri.
req = (from g in _settings.Options.GitCollectionRequest
where g.pageType == UriType.Form
&& uriInfo.AbsoluteUri.AbsoluteUri.ToString().Contains(g.pageName)
&& !(from o in _settings.Parsings
where o.pageType == g.pageType
select o.source.AbsoluteUri.AbsoluteUri)
.Contains(uriInfo.AbsoluteUri.AbsoluteUri)
select g.Clone()).ToList();
//Have requests?
if (req.Count() > 0)
{
//Persist the collector results.
_settings.PersistCollectorResultInfo(parser.ExtractCollectorRequest(req));
}
//Process link extraction.
linkInfos = parser.ExtractLinks();
// Add before parsing childs.
_settings.AddDownloadedResourceInfo(uriInfo);
foreach (UriResourceInformation linkInfo in linkInfos)
{
DownloadedResourceInformation dlInfo =
new DownloadedResourceInformation(
linkInfo,
uriInfo.LocalFolderPath,
uriInfo.LocalBaseFolderPath,
linkInfo.Parent,
depth + 1);
// Recurse.
ProcessUrl(dlInfo, depth + 1, git, folo);
// Do not return or break immediately if too deep,
// because this would omit certain pages at this
// recursion level.
}
// Persist after completely parsed childs.
_settings.PersistDownloadedResourceInfo(uriInfo);
break;
default:
break;
}
Console.WriteLine(
string.Format(
@"Finished processing URI '{0}'.",
uriInfo.AbsoluteUri.AbsoluteUri));
}
}
else
{
Console.WriteLine(
string.Format(
@"URI '{0}' is not processable. Skipping.",
uriInfo.AbsoluteUri.AbsoluteUri));
}
}
}
