private bool SeekPositionForTail(IContentReader reader)
{
bool flag;
FileSystemContentReaderWriter fileSystemContentReaderWriter = reader as FileSystemContentReaderWriter;
try
{
fileSystemContentReaderWriter.SeekItemsBackward(this.Tail);
flag = true;
}
catch (BackReaderEncodingNotSupportedException backReaderEncodingNotSupportedException)
{
fileSystemContentReaderWriter.Seek((long)0, SeekOrigin.Begin);
flag = false;
}
return(flag);
}
public IContentWriter GetContentWriter(string path)
{
if (string.IsNullOrEmpty(path))
{
throw PSTraceSource.NewArgumentException("path");
}
path = NormalizePath(path);
bool usingByteEncoding = false;
Encoding encodingType = Encoding.Default;
FileMode openOrCreate = FileMode.OpenOrCreate;
string streamName = null;
if (base.DynamicParameters != null)
{
FileSystemContentWriterDynamicParameters dynamicParameters = base.DynamicParameters as FileSystemContentWriterDynamicParameters;
if (dynamicParameters != null)
{
usingByteEncoding = dynamicParameters.UsingByteEncoding;
if (dynamicParameters.WasStreamTypeSpecified)
{
encodingType = dynamicParameters.EncodingType;
}
streamName = dynamicParameters.Stream;
}
}
int index = path.IndexOf(':');
int startIndex = path.IndexOf(':', index + 1);
if (startIndex > 0)
{
streamName = path.Substring(startIndex + 1);
path = path.Remove(startIndex);
}
FileSystemContentReaderWriter writer = null;
try
{
writer = new FileSystemContentReaderWriter(path, streamName, openOrCreate, FileAccess.Write, FileShare.Write, encodingType, usingByteEncoding, false, this, false);
}
catch (PathTooLongException exception)
{
base.WriteError(new ErrorRecord(exception, "GetContentWriterPathTooLongError", ErrorCategory.InvalidArgument, path));
}
catch (FileNotFoundException exception2)
{
base.WriteError(new ErrorRecord(exception2, "GetContentWriterFileNotFoundError", ErrorCategory.ObjectNotFound, path));
}
catch (DirectoryNotFoundException exception3)
{
base.WriteError(new ErrorRecord(exception3, "GetContentWriterDirectoryNotFoundError", ErrorCategory.ObjectNotFound, path));
}
catch (ArgumentException exception4)
{
base.WriteError(new ErrorRecord(exception4, "GetContentWriterArgumentError", ErrorCategory.InvalidArgument, path));
}
catch (IOException exception5)
{
base.WriteError(new ErrorRecord(exception5, "GetContentWriterIOError", ErrorCategory.WriteError, path));
}
catch (SecurityException exception6)
{
base.WriteError(new ErrorRecord(exception6, "GetContentWriterSecurityError", ErrorCategory.PermissionDenied, path));
}
catch (UnauthorizedAccessException exception7)
{
base.WriteError(new ErrorRecord(exception7, "GetContentWriterUnauthorizedAccessError", ErrorCategory.PermissionDenied, path));
}
return writer;
}
public IContentReader GetContentReader(string path)
{
if (string.IsNullOrEmpty(path))
{
throw PSTraceSource.NewArgumentException("path");
}
path = NormalizePath(path);
string delimiter = "\n";
Encoding encodingType = Encoding.Default;
bool waitForChanges = false;
bool usingByteEncoding = false;
bool delimiterSpecified = false;
bool isRawStream = false;
string streamName = null;
if (base.DynamicParameters != null)
{
FileSystemContentReaderDynamicParameters dynamicParameters = base.DynamicParameters as FileSystemContentReaderDynamicParameters;
if (dynamicParameters != null)
{
this.ValidateParameters((bool) dynamicParameters.Raw);
isRawStream = (bool) dynamicParameters.Raw;
delimiterSpecified = dynamicParameters.DelimiterSpecified;
if (delimiterSpecified)
{
delimiter = dynamicParameters.Delimiter;
}
usingByteEncoding = dynamicParameters.UsingByteEncoding;
if (dynamicParameters.WasStreamTypeSpecified)
{
encodingType = dynamicParameters.EncodingType;
}
waitForChanges = (bool) dynamicParameters.Wait;
streamName = dynamicParameters.Stream;
}
}
int index = path.IndexOf(':');
int startIndex = path.IndexOf(':', index + 1);
if (startIndex > 0)
{
streamName = path.Substring(startIndex + 1);
path = path.Remove(startIndex);
}
FileSystemContentReaderWriter writer = null;
try
{
if (delimiterSpecified)
{
if (usingByteEncoding)
{
Exception exception = new ArgumentException(FileSystemProviderStrings.DelimiterError, "delimiter");
base.WriteError(new ErrorRecord(exception, "GetContentReaderArgumentError", ErrorCategory.InvalidArgument, path));
return writer;
}
return new FileSystemContentReaderWriter(path, streamName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, delimiter, encodingType, waitForChanges, this, isRawStream);
}
writer = new FileSystemContentReaderWriter(path, streamName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, encodingType, usingByteEncoding, waitForChanges, this, isRawStream);
}
catch (PathTooLongException exception2)
{
base.WriteError(new ErrorRecord(exception2, "GetContentReaderPathTooLongError", ErrorCategory.InvalidArgument, path));
}
catch (FileNotFoundException exception3)
{
base.WriteError(new ErrorRecord(exception3, "GetContentReaderFileNotFoundError", ErrorCategory.ObjectNotFound, path));
}
catch (DirectoryNotFoundException exception4)
{
base.WriteError(new ErrorRecord(exception4, "GetContentReaderDirectoryNotFoundError", ErrorCategory.ObjectNotFound, path));
}
catch (ArgumentException exception5)
{
base.WriteError(new ErrorRecord(exception5, "GetContentReaderArgumentError", ErrorCategory.InvalidArgument, path));
}
catch (IOException exception6)
{
base.WriteError(new ErrorRecord(exception6, "GetContentReaderIOError", ErrorCategory.ReadError, path));
}
catch (SecurityException exception7)
{
base.WriteError(new ErrorRecord(exception7, "GetContentReaderSecurityError", ErrorCategory.PermissionDenied, path));
}
catch (UnauthorizedAccessException exception8)
{
base.WriteError(new ErrorRecord(exception8, "GetContentReaderUnauthorizedAccessError", ErrorCategory.PermissionDenied, path));
}
return writer;
}
private bool ScanForwardsForTail(ContentCommandBase.ContentHolder holder, CmdletProviderContext currentContext)
{
FileSystemContentReaderWriter reader = holder.Reader as FileSystemContentReaderWriter;
Queue <object> objs = new Queue <object>();
IList lists = null;
ErrorRecord errorRecord = null;
do
{
try
{
lists = reader.ReadWithoutWaitingChanges(this.ReadCount);
}
catch (Exception exception1)
{
Exception exception = exception1;
CommandsCommon.CheckForSevereException(this, exception);
ProviderInvocationException providerInvocationException = new ProviderInvocationException("ProviderContentReadError", SessionStateStrings.ProviderContentReadError, holder.PathInfo.Provider, holder.PathInfo.Path, exception);
MshLog.LogProviderHealthEvent(base.Context, holder.PathInfo.Provider.Name, providerInvocationException, Severity.Warning);
errorRecord = new ErrorRecord(providerInvocationException.ErrorRecord, providerInvocationException);
break;
}
if (lists == null || lists.Count <= 0)
{
continue;
}
foreach (object obj in lists)
{
if (objs.Count == this.Tail)
{
objs.Dequeue();
}
objs.Enqueue(obj);
}
}while (lists != null && lists.Count > 0);
if (objs.Count > 0)
{
int count = 0;
if (this.ReadCount <= (long)0 || this.ReadCount >= (long)objs.Count && this.ReadCount != (long)1)
{
count = objs.Count;
ArrayList arrayLists = new ArrayList();
while (objs.Count > 0)
{
arrayLists.Add(objs.Dequeue());
}
base.WriteContentObject(arrayLists.ToArray(), (long)count, holder.PathInfo, currentContext);
}
else
{
if (this.ReadCount != (long)1)
{
while ((long)objs.Count >= this.ReadCount)
{
ArrayList arrayLists1 = new ArrayList();
int num = 0;
while ((long)num < this.ReadCount)
{
arrayLists1.Add(objs.Dequeue());
num++;
count++;
}
base.WriteContentObject(arrayLists1.ToArray(), (long)count, holder.PathInfo, currentContext);
}
int count1 = objs.Count;
if (count1 > 0)
{
ArrayList arrayLists2 = new ArrayList();
while (count1 > 0)
{
arrayLists2.Add(objs.Dequeue());
count1--;
count++;
}
base.WriteContentObject(arrayLists2.ToArray(), (long)count, holder.PathInfo, currentContext);
}
}
else
{
while (objs.Count > 0)
{
int num1 = count;
count = num1 + 1;
base.WriteContentObject(objs.Dequeue(), (long)num1, holder.PathInfo, currentContext);
}
}
}
}
if (errorRecord == null)
{
return(true);
}
else
{
base.WriteError(errorRecord);
return(false);
}
}
/// <summary>
/// Creates an instance of the FileSystemContentStream class, opens
/// the specified file for writing, and returns the IContentReader interface
/// to it.
/// </summary>
///
/// <param name="path">
/// The path of the file to be opened for writing.
/// </param>
///
/// <returns>
/// An IContentWriter for the specified file.
/// </returns>
///
/// <exception cref="System.ArgumentException">
/// path is null or empty.
/// </exception>
public IContentWriter GetContentWriter(string path)
{
if (String.IsNullOrEmpty(path))
{
throw PSTraceSource.NewArgumentException("path");
}
path = NormalizePath(path);
// If this is true, then the content will be read as bytes
bool usingByteEncoding = false;
bool streamTypeSpecified = false;
Encoding encoding = ClrFacade.GetDefaultEncoding();
FileMode filemode = FileMode.OpenOrCreate;
string streamName = null;
bool suppressNewline = false;
// Get the dynamic parameters
if (DynamicParameters != null)
{
FileSystemContentWriterDynamicParameters dynParams =
DynamicParameters as FileSystemContentWriterDynamicParameters;
if (dynParams != null)
{
usingByteEncoding = dynParams.UsingByteEncoding;
streamTypeSpecified = dynParams.WasStreamTypeSpecified;
if (streamTypeSpecified)
{
encoding = dynParams.EncodingType;
}
streamName = dynParams.Stream;
suppressNewline = dynParams.NoNewline.IsPresent;
} // dynParams != null
}
// See if they've used the inline stream syntax. They have more than one colon.
int firstColon = path.IndexOf(':');
int secondColon = path.IndexOf(':', firstColon + 1);
if (secondColon > 0)
{
streamName = path.Substring(secondColon + 1);
path = path.Remove(secondColon);
}
FileSystemContentReaderWriter stream = null;
try
{
stream = new FileSystemContentReaderWriter(path, streamName, filemode, FileAccess.Write, FileShare.Write, encoding, usingByteEncoding, false, this, false, suppressNewline);
}
catch (PathTooLongException pathTooLong)
{
WriteError(new ErrorRecord(pathTooLong, "GetContentWriterPathTooLongError", ErrorCategory.InvalidArgument, path));
}
catch (FileNotFoundException fileNotFound)
{
WriteError(new ErrorRecord(fileNotFound, "GetContentWriterFileNotFoundError", ErrorCategory.ObjectNotFound, path));
}
catch (DirectoryNotFoundException directoryNotFound)
{
WriteError(new ErrorRecord(directoryNotFound, "GetContentWriterDirectoryNotFoundError", ErrorCategory.ObjectNotFound, path));
}
catch (ArgumentException argException)
{
WriteError(new ErrorRecord(argException, "GetContentWriterArgumentError", ErrorCategory.InvalidArgument, path));
}
catch (IOException ioException)
{
//IOException contains specific message about the error occured and so no need for errordetails.
WriteError(new ErrorRecord(ioException, "GetContentWriterIOError", ErrorCategory.WriteError, path));
}
catch (System.Security.SecurityException securityException)
{
WriteError(new ErrorRecord(securityException, "GetContentWriterSecurityError", ErrorCategory.PermissionDenied, path));
}
catch (UnauthorizedAccessException unauthorizedAccess)
{
WriteError(new ErrorRecord(unauthorizedAccess, "GetContentWriterUnauthorizedAccessError", ErrorCategory.PermissionDenied, path));
}
return stream;
} // GetContentWriter
/// <summary>
/// Creates an instance of the FileSystemContentStream class, opens
/// the specified file for reading, and returns the IContentReader interface
/// to it.
/// </summary>
///
/// <param name="path">
/// The path of the file to be opened for reading.
/// </param>
///
/// <returns>
/// An IContentReader for the specified file.
/// </returns>
///
/// <exception cref="System.ArgumentException">
/// path is null or empty.
/// </exception>
public IContentReader GetContentReader(string path)
{
if (String.IsNullOrEmpty(path))
{
throw PSTraceSource.NewArgumentException("path");
}
path = NormalizePath(path);
// Defaults for the file read operation
string delimiter = "\n";
Encoding encoding = ClrFacade.GetDefaultEncoding();
bool waitForChanges = false;
bool streamTypeSpecified = false;
bool usingByteEncoding = false;
bool delimiterSpecified = false;
bool isRawStream = false;
string streamName = null;
// Get the dynamic parameters.
// They override the defaults specified above.
if (DynamicParameters != null)
{
FileSystemContentReaderDynamicParameters dynParams =
DynamicParameters as FileSystemContentReaderDynamicParameters;
if (dynParams != null)
{
// -raw is not allowed when -first,-last or -wait is specified
// this call will validate that and throws.
ValidateParameters(dynParams.Raw);
isRawStream = dynParams.Raw;
// Get the delimiter
delimiterSpecified = dynParams.DelimiterSpecified;
if (delimiterSpecified)
delimiter = dynParams.Delimiter;
// Get the stream type
usingByteEncoding = dynParams.UsingByteEncoding;
streamTypeSpecified = dynParams.WasStreamTypeSpecified;
if (streamTypeSpecified)
{
encoding = dynParams.EncodingType;
}
// Get the wait value
waitForChanges = dynParams.Wait;
// Get the stream name
streamName = dynParams.Stream;
} // dynParams != null
} // DynamicParameters != null
// See if they've used the inline stream syntax. They have more than one colon.
int firstColon = path.IndexOf(':');
int secondColon = path.IndexOf(':', firstColon + 1);
if (secondColon > 0)
{
streamName = path.Substring(secondColon + 1);
path = path.Remove(secondColon);
}
FileSystemContentReaderWriter stream = null;
try
{
// Users can't both read as bytes, and specify a delimiter
if (delimiterSpecified)
{
if (usingByteEncoding)
{
Exception e =
new ArgumentException(FileSystemProviderStrings.DelimiterError, "delimiter");
WriteError(new ErrorRecord(
e,
"GetContentReaderArgumentError",
ErrorCategory.InvalidArgument,
path));
}
else
{
// Initialize the file reader
stream = new FileSystemContentReaderWriter(path, streamName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, delimiter, encoding, waitForChanges, this, isRawStream);
}
}
else
{
stream = new FileSystemContentReaderWriter(path, streamName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, encoding, usingByteEncoding, waitForChanges, this, isRawStream);
}
}
catch (PathTooLongException pathTooLong)
{
WriteError(new ErrorRecord(pathTooLong, "GetContentReaderPathTooLongError", ErrorCategory.InvalidArgument, path));
}
catch (FileNotFoundException fileNotFound)
{
WriteError(new ErrorRecord(fileNotFound, "GetContentReaderFileNotFoundError", ErrorCategory.ObjectNotFound, path));
}
catch (DirectoryNotFoundException directoryNotFound)
{
WriteError(new ErrorRecord(directoryNotFound, "GetContentReaderDirectoryNotFoundError", ErrorCategory.ObjectNotFound, path));
}
catch (ArgumentException argException)
{
WriteError(new ErrorRecord(argException, "GetContentReaderArgumentError", ErrorCategory.InvalidArgument, path));
}
catch (IOException ioException)
{
//IOException contains specific message about the error occured and so no need for errordetails.
WriteError(new ErrorRecord(ioException, "GetContentReaderIOError", ErrorCategory.ReadError, path));
}
catch (System.Security.SecurityException securityException)
{
WriteError(new ErrorRecord(securityException, "GetContentReaderSecurityError", ErrorCategory.PermissionDenied, path));
}
catch (UnauthorizedAccessException unauthorizedAccess)
{
WriteError(new ErrorRecord(unauthorizedAccess, "GetContentReaderUnauthorizedAccessError", ErrorCategory.PermissionDenied, path));
}
return stream;
} // GetContentReader
