/// <summary>
/// Initializes a new instance of the <see cref="CloudBlobDirectory"/> class given an address and a client.
/// </summary>
/// <param name="address">The blob directory's address.</param>
/// <param name="service">The client to use.</param>
internal CloudBlobDirectory(string address, CloudBlobClient service)
{
CommonUtils.AssertNotNullOrEmpty("address", address);
CommonUtils.AssertNotNull("service", service);
this.ServiceClient = service;
if (!address.EndsWith(this.ServiceClient.DefaultDelimiter))
{
address = address + this.ServiceClient.DefaultDelimiter;
}
this.Uri = NavigationHelper.AppendPathToUri(service.BaseUri, address);
}
/// <summary>
/// Retreives the parent name from a storage Uri.
/// </summary>
/// <param name="blobAddress">The BLOB address.</param>
/// <param name="delimiter">The delimiter.</param>
/// <param name="usePathStyleUris">If set to <c>true</c> use path style Uris.</param>
/// <returns>The name of the parent.</returns>
/// <remarks>
/// Adds the trailing delimiter as the prefix returned by the storage REST api always contains the delimiter.
/// </remarks>
/// <example>
/// GetParentName(new Uri("http://test.blob.core.windows.net/mycontainer/myfolder/myblob", "/")) will return "/mycontainer/myfolder/"
/// GetParentName(new Uri("http://test.blob.core.windows.net/mycontainer/myfolder|myblob", "|") will return "/mycontainer/myfolder|"
/// GetParentName(new Uri("http://test.blob.core.windows.net/mycontainer/myblob", "/") will return "/mycontainer/"
/// GetParentName(new Uri("http://test.blob.core.windows.net/mycontainer/", "/") will return "/mycontainer/"
/// </example>
internal static string GetParentName(Uri blobAddress, string delimiter, bool usePathStyleUris)
{
CommonUtils.AssertNotNull("blobAbsoluteUriString", blobAddress);
CommonUtils.AssertNotNullOrEmpty("delimiter", delimiter);
string containerName;
Uri containerUri;
GetContainerNameAndAddress(blobAddress, usePathStyleUris, out containerName, out containerUri);
// Get the blob path as the rest of the Uri
var blobPathUri = containerUri.MakeRelativeUri(blobAddress);
var blobPath = blobPathUri.OriginalString;
if (blobPath.EndsWith(delimiter))
{
blobPath = blobPath.Substring(0, blobPath.Length - delimiter.Length);
}
string parentName = null;
if (string.IsNullOrEmpty(blobPath))
{
// Case 1 /<ContainerName>[Delimiter]*? => /<ContainerName>
// Parent of container is container itself
parentName = containerName + delimiter;
}
else
{
var parentLength = blobPath.LastIndexOf(delimiter);
if (parentLength <= 0)
{
// Case 2 /<Container>/<folder>
// Parent of a folder is container
parentName = containerName + delimiter;
}
else
{
// Case 3 /<Container>/<folder>/[<subfolder>/]*<BlobName>
// Parent of blob is folder
parentName = blobPath.Substring(0, parentLength + delimiter.Length);
}
}
return(parentName);
}
