// ------------------------------------------------------------------
/// <summary>
/// Constructor.
/// </summary>
/// <param name="settings">The settings.</param>
/// <param name="uriInfo">The URI info.</param>
/// <param name="textContent">Content of the text.</param>
public ResourceParser(
SpiderSettings settings,
UriResourceInformation uriInfo,
string textContent)
{
_settings = settings;
_uriInfo = uriInfo;
_textContent = textContent;
}
// ------------------------------------------------------------------
/// <summary>
/// Initializes a new instance of the <see cref="WebSiteDownloader"/>
/// class.
/// </summary>
/// <param name="options">The options.</param>
public WebSiteDownloader(
WebSiteDownloaderOptions options)
{
Console.WriteLine(
string.Format(
@"Constructing WebSiteDownloader for URI '{0}', destination folder path '{1}'.",
options.DownloadUri,
options.DestinationFolderPath));
_settings = SpiderSettings.Restore(options.DestinationFolderPath, options.DestinationFileName);
_settings.Options = options;
}
// ------------------------------------------------------------------
/// <summary>
/// Constructor.
/// </summary>
public ResourceRewriter(
SpiderSettings settings)
{
_settings = settings;
}
/// <summary>
/// Restore a previously stored setting value from the given
/// folder path.
/// </summary>
/// <returns>Returns an empty object if not found.</returns>
public static SpiderSettings Restore(
DirectoryInfo folderPath, String fileName)
{
string filePath = Path.Combine(
folderPath.FullName,
fileName);
if (File.Exists(filePath))
{
try
{
BinaryFormatter serializer =
new BinaryFormatter();
using (FileStream reader = new FileStream(
filePath,
FileMode.Open,
FileAccess.Read))
{
SpiderSettings settings =
(SpiderSettings)serializer.Deserialize(reader);
settings.Options = new WebSiteDownloaderOptions();
settings.Options.DestinationFolderPath = folderPath;
//Laod temporary resources (Downloaded, but not processed).
if (settings._temporaryDownloadedResourceInfos == null)
{
settings._temporaryDownloadedResourceInfos =
new List<DownloadedResourceInformation>();
}
//Load persisted resources (Downloaded and processed)
if (settings._persistentDownloadedResourceInfos == null)
{
settings._persistentDownloadedResourceInfos =
new List<DownloadedResourceInformation>();
}
//Load persisted resources (Downloaded and processed)
if (settings._persistentCollectorResourceInfos == null)
{
settings._persistentCollectorResourceInfos =
new List<iCollector>();
}
//Not sure yet what counts as a continue download.
if (settings._continueDownloadedResourceInfos == null)
{
settings._continueDownloadedResourceInfos =
new List<DownloadedResourceInformation>();
}
// Move from persistent storage back to memory.
settings._temporaryDownloadedResourceInfos.Clear();
settings._temporaryDownloadedResourceInfos.AddRange(
settings._persistentDownloadedResourceInfos);
Console.WriteLine(
string.Format(
@"Successfully restored spider settings from file '{0}'. " +
@"{1} temporary downloaded resources, " +
@"{2} persistent downloaded resources, " +
@"{3} continue downloaded resources.",
filePath,
settings._temporaryDownloadedResourceInfos.Count,
settings._persistentDownloadedResourceInfos.Count,
settings._continueDownloadedResourceInfos.Count
));
return settings;
}
}
catch (SerializationException x)
{
Console.WriteLine(
string.Format(
@"Ignoring exception while deserializing spider settings: '{0}'.",
x.Message));
SpiderSettings settings = new SpiderSettings();
settings.Options.DestinationFolderPath = folderPath;
return settings;
}
catch (IOException x)
{
Console.WriteLine(
string.Format(
@"Ignoring IO exception while loading spider settings: '{0}'.",
x.Message));
SpiderSettings settings = new SpiderSettings();
settings.Options.DestinationFolderPath = folderPath;
return settings;
}
catch (UnauthorizedAccessException x)
{
Console.WriteLine(
string.Format(
@"Ignoring exception while loading spider settings: '{0}'.",
x.Message));
SpiderSettings settings = new SpiderSettings();
settings.Options.DestinationFolderPath = folderPath;
return settings;
}
}
else
{
SpiderSettings settings = new SpiderSettings();
settings.Options.DestinationFolderPath = folderPath;
return settings;
}
}
// ------------------------------------------------------------------
/// <summary>
/// Constructor.
/// </summary>
public ResourceStorer(
SpiderSettings settings )
{
_settings = settings;
}
