/// <summary>
/// Read options from <paramref name="option"/> and return flattened object.
/// </summary>
/// <param name="option"></param>
/// <returns></returns>
public static Options Read(IOption option)
{
Options result = new Options();
IOpenOption open = option.AsOption <IOpenOption>();
if (open != null)
{
result.CanCreateFile = open.CanCreateFile;
result.CanOpen = open.CanOpen;
result.CanRead = open.CanRead;
result.CanWrite = open.CanWrite;
}
IBrowseOption browse = option.AsOption <IBrowseOption>();
if (browse != null)
{
result.CanBrowse = browse.CanBrowse;
}
IObserveOption observe = option.AsOption <IObserveOption>();
if (observe != null)
{
result.CanObserve = observe.CanObserve;
}
IToken token = option.AsOption <IToken>();
if (token != null)
{
var enumr = option.ListTokens(false);
result.tokens = enumr is IToken[] arr ? arr : enumr.ToArray();
}
return(result);
}
/// <summary>Read from <paramref name="option"/></summary>
/// <param name="option"></param>
/// <returns>this</returns>
public virtual Options Read(IOption option)
{
IOpenOption open = option.AsOption <IOpenOption>();
if (open != null)
{
CanCreateFile = open.CanCreateFile;
CanOpen = open.CanOpen;
CanRead = open.CanRead;
CanWrite = open.CanWrite;
}
IDeleteOption delete = option.AsOption <IDeleteOption>();
if (delete != null)
{
CanDelete = delete.CanDelete;
}
IBrowseOption browse = option.AsOption <IBrowseOption>();
if (browse != null)
{
CanBrowse = browse.CanBrowse;
CanGetEntry = browse.CanGetEntry;
}
ISubPathOption subpath = option.AsOption <ISubPathOption>();
if (subpath != null)
{
SubPath = subpath.SubPath;
}
return(this);
}
/// <summary>
/// Query for a token object at path <paramref name="path"/> as type <paramref name="key"/>.
/// </summary>
/// <param name="tokenContainer"></param>
/// <param name="path">(optional) path to query token at</param>
/// <param name="key">(optional) key to query, typically <see cref="Type.FullName"/></param>
/// <param name="token">array of tokens, or null if failed to find matching tokens</param>
/// <returns>true if tokens were found for the parameters</returns>
public static bool TryGetToken(this IOption tokenContainer, string path, string key, out object token)
{
ITokenProvider tp = tokenContainer.AsOption <ITokenProvider>();
if (tp != null && tp.TryGetToken(path, key, out token))
{
return(true);
}
token = null;
return(false);
}
/// <summary>
/// Query for a token object at path <paramref name="path"/> as type <typeparamref name="T"/>.
/// </summary>
/// <param name="tokenContainer"></param>
/// <param name="path">(optional) path to query token at</param>
/// <param name="key">(optional) key to query, typically <see cref="Type.FullName"/></param>
/// <param name="token">array of tokens, or null if failed to find matching tokens</param>
/// <returns>true if tokens were found for the parameters</returns>
public static bool TryGetToken <T>(this IOption tokenContainer, string path, string key, out T token)
{
object obj;
ITokenProvider tp = tokenContainer.AsOption <ITokenProvider>();
if (tp != null && tp.TryGetToken(path, key, out obj) && obj is T casted)
{
token = casted; return(true);
}
token = default;
return(false);
}
/// <summary>
/// Create http:// filesystem.
///
/// HttpFileSystem is intended
/// </summary>
/// <param name="httpClient">(optional) httpClient instance to use, or null to have new created</param>
/// <param name="option">(optional) options</param>
public HttpFileSystem(HttpClient httpClient = default, IOption option = null) : base()
{
this.httpClient = httpClient ?? new HttpClient();
if (option != null)
{
this.options = CreateOptions().Read(option);
this.token = option.AsOption <IToken>();
}
else
{
this.options = Options.Instance;
}
}
/// <summary>
/// Query for a token object at path <paramref name="path"/> as type <typeparamref name="T"/>.
/// </summary>
/// <param name="tokenContainer"></param>
/// <param name="path">(optional) path to query token at</param>
/// <param name="key">(optional) key to query, typically <see cref="Type.FullName"/></param>
/// <param name="tokens">array of tokens, or null if failed to find matching tokens</param>
/// <returns>true if tokens were found for the parameters</returns>
public static bool TryGetAllTokens <T>(this IOption tokenContainer, string path, string key, out T[] tokens)
{
object[] objs;
ITokenProvider tp = tokenContainer.AsOption <ITokenProvider>();
if (tp != null && tp.TryGetAllTokens(path, key, out objs))
{
List <T> list = new List <T>(objs.Length);
for (int i = 0; i < objs.Length; i++)
{
if (objs[i] is T casted)
{
list.Add(casted);
}
}
tokens = list.ToArray();
return(list.Count > 0);
}
tokens = null;
return(false);
}
/// <summary> /// Test if <paramref name="filesystemOption"/> has Observe capability. /// </summary> /// <param name="filesystemOption"></param> /// <param name="defaultValue">Returned value if option is unspecified</param> /// <returns>true, if has Observe capability</returns> public static bool CanObserve(this IOption filesystemOption, bool defaultValue = false) => filesystemOption.AsOption <IObserveOption>() is IObserveOption observer ? observer.CanObserve : defaultValue;
/// <summary>
/// Create adapter that adapts <paramref name="sourceFilesystem"/> into <see cref="IFileProvider"/>.
/// </summary>
/// <param name="sourceFilesystem"></param>
/// <param name="option">(optional) decorating options, such as <see cref="IToken"/></param>
public FileSystemProvider(IFileSystem sourceFilesystem, IOption option = null) : base()
{
FileSystem = sourceFilesystem ?? throw new ArgumentNullException(nameof(sourceFilesystem));
this.options = AllOptions.Read(Option.Union(sourceFilesystem, option));
this.token = option.AsOption <IToken>();
}
public static Option <T> OfType <T>(this IOption value)
{
return(value.AsOption().Where(x => x is T).Transform(x => (T)x));
}
/// <summary> /// Test if <paramref name="filesystemOption"/> has CreateDirectory capability. /// </summary> /// <param name="filesystemOption"></param> /// <param name="defaultValue">Returned value if option is unspecified</param> /// <returns>true, if has CreateDirectory capability</returns> public static bool CanCreateDirectory(this IOption filesystemOption, bool defaultValue = false) => filesystemOption.AsOption <ICreateDirectoryOption>() is ICreateDirectoryOption directoryConstructor ? directoryConstructor.CanCreateDirectory : defaultValue;
/// <summary> /// Is filesystem allowed to unmount a mount. /// </summary> /// <param name="filesystemOption"></param> /// <param name="defaultValue">Returned value if option is unspecified</param> /// <returns></returns> public static bool CanUnmount(this IOption filesystemOption, bool defaultValue = false) => filesystemOption.AsOption <IMountOption>() is IMountOption mountable ? mountable.CanUnmount : defaultValue;
/// <summary> /// Test if <paramref name="filesystemOption"/> has local move/rename capability. /// </summary> /// <param name="filesystemOption"></param> /// <param name="defaultValue">Returned value if option is unspecified</param> /// <returns>true, if has Move capability</returns> public static bool CanMove(this IOption filesystemOption, bool defaultValue = false) => filesystemOption.AsOption <IMoveOption>() is IMoveOption mover ? mover.CanMove : defaultValue;
/// <summary> /// Test if <paramref name="filesystemOption"/> has Exists capability. /// </summary> /// <param name="filesystemOption"></param> /// <param name="defaultValue">Returned value if option is unspecified</param> /// <returns>true if has Exists capability</returns> public static bool CanGetEntry(this IOption filesystemOption, bool defaultValue = false) => filesystemOption.AsOption <IBrowseOption>() is IBrowseOption browser ? browser.CanGetEntry : defaultValue;
/// <summary> /// Get automounters. /// </summary> /// <param name="filesystemOption"></param> /// <returns></returns> public static IPackageLoader[] AutoMounters(this IOption filesystemOption) => filesystemOption.AsOption <IAutoMountOption>() is IAutoMountOption automount ? automount.AutoMounters : null;
/// <summary> /// Get case sensitivity. /// <param name="filesystemOption"></param> /// </summary> /// <returns>mount path or null</returns> public static FileSystemCaseSensitivity CaseSensitivity(this IOption filesystemOption) => filesystemOption.AsOption <IPathInfo>() is IPathInfo op ? op.CaseSensitivity : FileSystemCaseSensitivity.Unknown;
/// <summary> /// Test if <paramref name="filesystemOption"/> has SetFileAttribute capability. /// </summary> /// <param name="filesystemOption"></param> /// <param name="defaultValue">Returned value if option is unspecified</param> /// <returns>true if has SetFileAttribute capability</returns> public static bool CanSetFileAttribute(this IOption filesystemOption, bool defaultValue = false) => filesystemOption.AsOption <IFileAttributeOption>() is IFileAttributeOption attributer ? attributer.CanSetFileAttribute : defaultValue;
/// <summary> /// Test if <paramref name="filesystemOption"/> has CreateFile capability. /// </summary> /// <param name="filesystemOption"></param> /// <param name="defaultValue">Returned value if option is unspecified</param> /// <returns>true, if has CreateFile capability</returns> public static bool CanCreateFile(this IOption filesystemOption, bool defaultValue = false) => filesystemOption.AsOption <IOpenOption>() is IOpenOption opener ? opener.CanCreateFile : defaultValue;
/// <summary> /// Test if <paramref name="filesystemOption"/> has Delete capability. /// </summary> /// <param name="filesystemOption"></param> /// <param name="defaultValue">Returned value if option is unspecified</param> /// <returns>true, if has Delete capability</returns> public static bool CanDelete(this IOption filesystemOption, bool defaultValue = false) => filesystemOption.AsOption <IDeleteOption>() is IDeleteOption deleter ? deleter.CanDelete : defaultValue;
