/// <summary>
/// Enumerate the sub directories of this directory.
/// </summary>
/// <param name="searchPattern">The search string. The default pattern is "*", which returns all directories.</param>
/// <param name="searchOption">One of the enumeration values that specifies whether the search operation should include only the current directory or all subdirectories. The default value is TopDirectoryOnly.</param>
/// <exception cref="T:System.Net.WebException"></exception>
/// <exception cref="T:Amazon.S3.AmazonS3Exception"></exception>
/// <returns>An enumerable collection of directories that matches searchPattern and searchOption.</returns>
public IEnumerable <S3DirectoryInfo> EnumerateDirectories(string searchPattern, SearchOption searchOption)
{
IEnumerable <S3DirectoryInfo> folders = null;
if (String.IsNullOrEmpty(bucket))
{
var request = new ListBucketsRequest();
((Amazon.Runtime.Internal.IAmazonWebServiceRequest)request).AddBeforeRequestHandler(S3Helper.FileIORequestEventHandler);
Task <ListBucketsResponse> t = s3Client.ListBucketsAsync(request);
t.Wait();
folders = t.Result.Buckets.ConvertAll(s3Bucket => new S3DirectoryInfo(s3Client, s3Bucket.BucketName, ""));
}
else
{
var request = new ListObjectsRequest
{
BucketName = bucket,
Delimiter = "/",
Prefix = S3Helper.EncodeKey(key)
};
((Amazon.Runtime.Internal.IAmazonWebServiceRequest)request).AddBeforeRequestHandler(S3Helper.FileIORequestEventHandler);
folders = new EnumerableConverter <string, S3DirectoryInfo>
((IEnumerable <string>)(PaginatedResourceFactory.Create <string, ListObjectsRequest, ListObjectsResponse>(new PaginatedResourceInfo()
.WithClient(s3Client)
.WithMethodName("ListObjects")
.WithRequest(request)
.WithItemListPropertyPath("CommonPrefixes")
.WithTokenRequestPropertyPath("Marker")
.WithTokenResponsePropertyPath("NextMarker"))),
prefix => new S3DirectoryInfo(s3Client, bucket, S3Helper.DecodeKey(prefix)));
}
//handle if recursion is set
if (searchOption == SearchOption.AllDirectories)
{
IEnumerable <S3DirectoryInfo> foldersToAdd = new List <S3DirectoryInfo>();
foreach (S3DirectoryInfo dir in folders)
{
foldersToAdd = foldersToAdd.Concat(dir.EnumerateDirectories(searchPattern, searchOption));
}
folders = folders.Concat(foldersToAdd);
}
//filter based on search pattern
var regEx = WildcardToRegex(searchPattern);
folders = folders.Where(s3dirInfo => Regex.IsMatch(s3dirInfo.Name, regEx, RegexOptions.IgnoreCase));
return(folders);
}
/// <summary>
/// Enumerate the files of this directory.
/// </summary>
/// <param name="searchPattern">The search string. The default pattern is "*", which returns all files.</param>
/// <param name="searchOption">One of the enumeration values that specifies whether the search operation should include only the current directory or all subdirectories. The default value is TopDirectoryOnly.</param>
/// <exception cref="T:System.Net.WebException"></exception>
/// <exception cref="T:Amazon.S3.AmazonS3Exception"></exception>
/// <returns>An enumerable collection of files that matches searchPattern and searchOption.</returns>
public IEnumerable <S3FileInfo> EnumerateFiles(string searchPattern, SearchOption searchOption)
{
IEnumerable <S3FileInfo> files = null;
if (String.IsNullOrEmpty(bucket))
{
files = new List <S3FileInfo>();
}
else
{
var request = new ListObjectsRequest
{
BucketName = bucket,
Delimiter = "/",
Prefix = S3Helper.EncodeKey(key)
};
((Amazon.Runtime.Internal.IAmazonWebServiceRequest)request).AddBeforeRequestHandler(S3Helper.FileIORequestEventHandler);
PaginatedResourceInfo pagingInfo = new PaginatedResourceInfo().WithClient(s3Client)
.WithMethodName("ListObjects")
.WithRequest(request)
.WithItemListPropertyPath("S3Objects")
.WithTokenRequestPropertyPath("Marker")
.WithTokenResponsePropertyPath("NextMarker");
files = new EnumerableConverter <S3Object, S3FileInfo>
(((IEnumerable <S3Object>)(PaginatedResourceFactory.Create <S3Object, ListObjectsRequest, ListObjectsResponse>(pagingInfo)))
.Where(s3Object => !String.Equals(S3Helper.DecodeKey(s3Object.Key), key, StringComparison.Ordinal) && !s3Object.Key.EndsWith("\\", StringComparison.Ordinal)),
s3Object => new S3FileInfo(s3Client, bucket, S3Helper.DecodeKey(s3Object.Key)));
}
//handle if recursion is set
if (searchOption == SearchOption.AllDirectories)
{
IEnumerable <S3DirectoryInfo> foldersToSearch = EnumerateDirectories();
foreach (S3DirectoryInfo dir in foldersToSearch)
{
files = files.Concat(dir.EnumerateFiles(searchPattern, searchOption));
}
}
//filter based on search pattern
var regEx = WildcardToRegex(searchPattern);
files = files.Where(s3fileInfo => Regex.IsMatch(s3fileInfo.Name, regEx, RegexOptions.IgnoreCase));
return(files);
}