/// <summary>
/// Get a File/Blob resource as a stream. Method is applicable only for Zip/Directory Resources.
/// </summary>
/// <param name="configuration">Configuration instance.</param>
/// <param name="path">Search path for the resource node.</param>
/// <param name="file">Sub-path for the file</param>
/// <returns>Stream Reader</returns>
public static StreamReader GetResourceStream(this Configuration configuration, string path, string file)
{
Preconditions.CheckArgument(configuration);
Preconditions.CheckArgument(path);
Preconditions.CheckArgument(file);
AbstractConfigNode node = configuration.Find(path);
if (node != null && typeof(ConfigResourceNode).IsAssignableFrom(node.GetType()))
{
ConfigResourceNode rnode = (ConfigResourceNode)node;
if (rnode.GetType() == typeof(ConfigResourceZip))
{
ConfigResourceZip fnode = (ConfigResourceZip)rnode;
if (fnode.Downloaded)
{
Conditions.NotNull(fnode.File);
FileInfo fi = new FileInfo(fnode.File.FullName);
if (!fi.Exists)
{
throw new ConfigurationException(String.Format("Invalid File Resource Node: File not found. [file={0}]", fi.FullName));
}
string filename = String.Format("{0}/{1}", fi.FullName, file);
fi = new FileInfo(filename);
if (!fi.Exists)
{
throw new ConfigurationException(String.Format("File not found. [file={0}]", fi.FullName));
}
return(new StreamReader(fi.FullName));
}
else
{
lock (fnode)
{
DownloadResource(fnode);
UnzipResource(fnode);
}
string filename = String.Format("{0}/{1}", fnode.Directory.FullName, file);
FileInfo fi = new FileInfo(filename);
if (!fi.Exists)
{
throw new ConfigurationException(String.Format("Invalid File Resource Node: File not found. [file={0}]", fi.FullName));
}
return(new StreamReader(fi.FullName));
}
}
else if (rnode.GetType() == typeof(ConfigDirectoryResource))
{
ConfigDirectoryResource dnode = (ConfigDirectoryResource)rnode;
if (!dnode.Directory.Exists)
{
throw new ConfigurationException(String.Format("Directory not found. [file={0}]", dnode.Directory.FullName));
}
string filename = String.Format("{0}/{1}", dnode.Directory.FullName, file);
FileInfo fi = new FileInfo(filename);
if (!fi.Exists)
{
throw new ConfigurationException(String.Format("Invalid File Resource Node: File not found. [file={0}]", fi.FullName));
}
return(new StreamReader(fi.FullName));
}
}
return(null);
}
/// <summary>
/// Create a Resource node instance.
/// </summary>
/// <param name="parent">Parent Config node</param>
/// <param name="elem">XML Element</param>
private void AddResourceNode(ConfigPathNode parent, XmlElement elem)
{
string resourceName = elem.GetAttribute(ConstXmlResourceNode.XML_CONFIG_ATTR_RESOURCE_NAME);
if (String.IsNullOrWhiteSpace(resourceName))
{
throw ConfigurationException.PropertyMissingException(ConstXmlResourceNode.XML_CONFIG_ATTR_RESOURCE_NAME);
}
string st = elem.GetAttribute(ConstXmlResourceNode.XML_CONFIG_ATTR_RESOURCE_TYPE);
if (String.IsNullOrWhiteSpace(st))
{
throw ConfigurationException.PropertyMissingException(ConstXmlResourceNode.XML_CONFIG_ATTR_RESOURCE_TYPE);
}
EResourceType type = Enum.Parse <EResourceType>(st);
if (type == EResourceType.NONE)
{
throw ConfigurationException.PropertyMissingException(ConstXmlResourceNode.XML_CONFIG_ATTR_RESOURCE_TYPE);
}
Uri uri = null;
if (elem.HasChildNodes)
{
foreach (XmlNode nn in elem.ChildNodes)
{
if (nn.NodeType == XmlNodeType.Element && nn.Name == ConstXmlResourceNode.XML_CONFIG_NODE_RESOURCE_URL)
{
string su = nn.InnerText;
if (String.IsNullOrWhiteSpace(su))
{
throw ConfigurationException.PropertyMissingException(ConstXmlResourceNode.XML_CONFIG_NODE_RESOURCE_URL);
}
uri = new Uri(su);
break;
}
}
}
if (uri == null)
{
throw ConfigurationException.PropertyMissingException(ConstXmlResourceNode.XML_CONFIG_NODE_RESOURCE_URL);
}
ConfigResourceNode node = null;
switch (type)
{
case EResourceType.FILE:
node = new ConfigResourceFile(configuration, parent);
break;
case EResourceType.DIRECTORY:
node = new ConfigDirectoryResource(configuration, parent);
break;
case EResourceType.ZIP:
node = new ConfigResourceZip(configuration, parent);
break;
}
node.Name = elem.Name;
node.Type = type;
node.Location = uri;
node.ResourceName = resourceName;
if (settings.DownloadOptions == EDownloadOptions.LoadRemoteResourcesOnStartup)
{
if (type == EResourceType.ZIP || type == EResourceType.FILE)
{
ConfigResourceFile fnode = (ConfigResourceFile)node;
ConfigResourceHelper.DownloadResource(fnode);
}
}
if (type == EResourceType.DIRECTORY)
{
ConfigDirectoryResource dnode = (ConfigDirectoryResource)node;
if (!dnode.Location.IsFile)
{
throw new ConfigurationException(String.Format("Invalid URI: Must be a local/mounted directory. [uri={0}]", dnode.Location.ToString()));
}
string dir = dnode.Location.LocalPath;
DirectoryInfo di = new DirectoryInfo(dir);
if (di.Exists)
{
throw new ConfigurationException(String.Format("Invalid URI: Directory not found. [uri={0}]", dnode.Location.ToString()));
}
dnode.Downloaded = true;
dnode.Directory = di;
}
parent.AddChildNode(node);
}