/// <summary>
/// Seeks to the end of the writer stream in each of the writers in the
/// content holders.
/// </summary>
///
/// <param name="contentHolders">
/// The content holders that contain the writers to be moved.
/// </param>
///
/// <exception cref="ProviderInvocationException">
/// If calling Seek on the content writer throws an exception.
/// </exception>
///
internal override void SeekContentPosition(List <ContentHolder> contentHolders)
{
foreach (ContentHolder holder in contentHolders)
{
if (holder.Writer != null)
{
try
{
holder.Writer.Seek(0, System.IO.SeekOrigin.End);
}
catch (Exception e) // Catch-all OK, 3rd party callout
{
ProviderInvocationException providerException =
new ProviderInvocationException(
"ProviderSeekError",
SessionStateStrings.ProviderSeekError,
holder.PathInfo.Provider,
holder.PathInfo.Path,
e);
// Log a provider health event
MshLog.LogProviderHealthEvent(
this.Context,
holder.PathInfo.Provider.Name,
providerException,
Severity.Warning);
throw providerException;
}
}
}
} // SeekContentPosition
internal void CloseContent(List <ContentCommandBase.ContentHolder> contentHolders, bool disposing)
{
if (contentHolders != null)
{
foreach (ContentCommandBase.ContentHolder contentHolder in contentHolders)
{
try
{
if (contentHolder.Writer != null)
{
contentHolder.Writer.Close();
}
}
catch (Exception exception1)
{
Exception exception = exception1;
CommandsCommon.CheckForSevereException(this, exception);
ProviderInvocationException providerInvocationException = new ProviderInvocationException("ProviderContentCloseError", SessionStateStrings.ProviderContentCloseError, contentHolder.PathInfo.Provider, contentHolder.PathInfo.Path, exception);
MshLog.LogProviderHealthEvent(base.Context, contentHolder.PathInfo.Provider.Name, providerInvocationException, Severity.Warning);
if (!disposing)
{
base.WriteError(new ErrorRecord(providerInvocationException.ErrorRecord, providerInvocationException));
}
}
try
{
if (contentHolder.Reader != null)
{
contentHolder.Reader.Close();
}
}
catch (Exception exception3)
{
Exception exception2 = exception3;
CommandsCommon.CheckForSevereException(this, exception2);
ProviderInvocationException providerInvocationException1 = new ProviderInvocationException("ProviderContentCloseError", SessionStateStrings.ProviderContentCloseError, contentHolder.PathInfo.Provider, contentHolder.PathInfo.Path, exception2);
MshLog.LogProviderHealthEvent(base.Context, contentHolder.PathInfo.Provider.Name, providerInvocationException1, Severity.Warning);
if (!disposing)
{
base.WriteError(new ErrorRecord(providerInvocationException1.ErrorRecord, providerInvocationException1));
}
}
}
return;
}
else
{
throw PSTraceSource.NewArgumentNullException("contentHolders");
}
}
public void WriteError(ErrorRecord errorRecord)
{
using (PSTransactionManager.GetEngineProtectionScope())
{
if (errorRecord == null)
{
throw CmdletProvider.providerBaseTracer.NewArgumentNullException(nameof(errorRecord));
}
if (errorRecord.ErrorDetails != null && errorRecord.ErrorDetails.TextLookupError != null)
{
MshLog.LogProviderHealthEvent(this.Context.ExecutionContext, this.ProviderInfo.Name, errorRecord.ErrorDetails.TextLookupError, Severity.Warning);
}
this.Context.WriteError(errorRecord);
}
}
public void ThrowTerminatingError(ErrorRecord errorRecord)
{
using (PSTransactionManager.GetEngineProtectionScope())
{
if (errorRecord == null)
{
throw CmdletProvider.providerBaseTracer.NewArgumentNullException(nameof(errorRecord));
}
if (errorRecord.ErrorDetails != null && errorRecord.ErrorDetails.TextLookupError != null)
{
Exception textLookupError = errorRecord.ErrorDetails.TextLookupError;
errorRecord.ErrorDetails.TextLookupError = (Exception)null;
MshLog.LogProviderHealthEvent(this.Context.ExecutionContext, this.ProviderInfo.Name, textLookupError, Severity.Warning);
}
ProviderInvocationException invocationException = new ProviderInvocationException(this.ProviderInfo, errorRecord);
MshLog.LogProviderHealthEvent(this.Context.ExecutionContext, this.ProviderInfo.Name, (Exception)invocationException, Severity.Warning);
throw invocationException;
}
}
public void ThrowTerminatingError(ErrorRecord errorRecord)
{
using (PSTransactionManager.GetEngineProtectionScope())
{
if (errorRecord == null)
{
throw PSTraceSource.NewArgumentNullException("errorRecord");
}
if ((errorRecord.ErrorDetails != null) && (errorRecord.ErrorDetails.TextLookupError != null))
{
Exception textLookupError = errorRecord.ErrorDetails.TextLookupError;
errorRecord.ErrorDetails.TextLookupError = null;
MshLog.LogProviderHealthEvent(this.Context.ExecutionContext, this.ProviderInfo.Name, textLookupError, Severity.Warning);
}
ProviderInvocationException exception2 = new ProviderInvocationException(this.ProviderInfo, errorRecord);
MshLog.LogProviderHealthEvent(this.Context.ExecutionContext, this.ProviderInfo.Name, exception2, Severity.Warning);
throw exception2;
}
}
internal override void SeekContentPosition(List <ContentCommandBase.ContentHolder> contentHolders)
{
foreach (ContentCommandBase.ContentHolder contentHolder in contentHolders)
{
if (contentHolder.Writer == null)
{
continue;
}
try
{
contentHolder.Writer.Seek((long)0, SeekOrigin.End);
}
catch (Exception exception1)
{
Exception exception = exception1;
CommandsCommon.CheckForSevereException(this, exception);
ProviderInvocationException providerInvocationException = new ProviderInvocationException("ProviderSeekError", SessionStateStrings.ProviderSeekError, contentHolder.PathInfo.Provider, contentHolder.PathInfo.Path, exception);
MshLog.LogProviderHealthEvent(base.Context, contentHolder.PathInfo.Provider.Name, providerInvocationException, Severity.Warning);
throw providerInvocationException;
}
}
}
/// <summary>
/// Closes the content readers and writers in the content holder array
/// </summary>
internal void CloseContent(List <ContentHolder> contentHolders, bool disposing)
{
if (contentHolders == null)
{
throw PSTraceSource.NewArgumentNullException("contentHolders");
}
foreach (ContentHolder holder in contentHolders)
{
try
{
if (holder.Writer != null)
{
holder.Writer.Close();
}
}
catch (Exception e) // Catch-all OK. 3rd party callout
{
// Catch all the exceptions caused by closing the writer
// and write out an error.
ProviderInvocationException providerException =
new ProviderInvocationException(
"ProviderContentCloseError",
SessionStateStrings.ProviderContentCloseError,
holder.PathInfo.Provider,
holder.PathInfo.Path,
e);
// Log a provider health event
MshLog.LogProviderHealthEvent(
this.Context,
holder.PathInfo.Provider.Name,
providerException,
Severity.Warning);
if (!disposing)
{
WriteError(
new ErrorRecord(
providerException.ErrorRecord,
providerException));
}
}
try
{
if (holder.Reader != null)
{
holder.Reader.Close();
}
}
catch (Exception e) // Catch-all OK. 3rd party callout
{
// Catch all the exceptions caused by closing the writer
// and write out an error.
ProviderInvocationException providerException =
new ProviderInvocationException(
"ProviderContentCloseError",
SessionStateStrings.ProviderContentCloseError,
holder.PathInfo.Provider,
holder.PathInfo.Path,
e);
// Log a provider health event
MshLog.LogProviderHealthEvent(
this.Context,
holder.PathInfo.Provider.Name,
providerException,
Severity.Warning);
if (!disposing)
{
WriteError(
new ErrorRecord(
providerException.ErrorRecord,
providerException));
}
}
}
}
/// <summary>
/// Appends the content to the specified item.
/// </summary>
protected override void ProcessRecord()
{
CmdletProviderContext currentContext = GetCurrentContext();
// Initialize the content
if (_content == null)
{
_content = Array.Empty <object>();
}
if (_pipingPaths)
{
// Make sure to clean up the content writers that are already there
if (contentStreams != null && contentStreams.Count > 0)
{
CloseContent(contentStreams, false);
_contentWritersOpen = false;
contentStreams = new List <ContentHolder>();
}
}
if (!_contentWritersOpen)
{
// Since the paths are being pipelined in, we have
// to get new content writers for the new paths
string[] paths = GetAcceptedPaths(Path, currentContext);
if (paths.Length > 0)
{
BeforeOpenStreams(paths);
contentStreams = GetContentWriters(paths, currentContext);
SeekContentPosition(contentStreams);
}
_contentWritersOpen = true;
}
// Now write the content to the item
try
{
foreach (ContentHolder holder in contentStreams)
{
if (holder.Writer != null)
{
IList result = null;
try
{
result = holder.Writer.Write(_content);
}
catch (Exception e) // Catch-all OK. 3rd party callout
{
ProviderInvocationException providerException =
new(
"ProviderContentWriteError",
SessionStateStrings.ProviderContentWriteError,
holder.PathInfo.Provider,
holder.PathInfo.Path,
e);
// Log a provider health event
MshLog.LogProviderHealthEvent(
this.Context,
holder.PathInfo.Provider.Name,
providerException,
Severity.Warning);
WriteError(
new ErrorRecord(
providerException.ErrorRecord,
providerException));
continue;
}
if (result != null && result.Count > 0 && PassThru)
{
WriteContentObject(result, result.Count, holder.PathInfo, currentContext);
}
}
}
}
finally
{
// Need to close all the writers if the paths are being pipelined
if (_pipingPaths)
{
CloseContent(contentStreams, false);
_contentWritersOpen = false;
contentStreams = new List <ContentHolder>();
}
}
}
/// <summary>
/// Gets the content of an item at the specified path.
/// </summary>
protected override void ProcessRecord()
{
// TotalCount and Tail should not be specified at the same time.
// Throw out terminating error if this is the case.
if (_totalCountSpecified && _tailSpecified)
{
string errMsg = StringUtil.Format(SessionStateStrings.GetContent_TailAndHeadCannotCoexist, "TotalCount", "Tail");
ErrorRecord error = new(new InvalidOperationException(errMsg), "TailAndHeadCannotCoexist", ErrorCategory.InvalidOperation, null);
WriteError(error);
return;
}
if (TotalCount == 0)
{
// Don't read anything
return;
}
// Get the content readers
CmdletProviderContext currentContext = CmdletProviderContext;
contentStreams = this.GetContentReaders(Path, currentContext);
try
{
// Iterate through the content holders reading the content
foreach (ContentHolder holder in contentStreams)
{
long countRead = 0;
Dbg.Diagnostics.Assert(
holder.Reader != null,
"All holders should have a reader assigned");
if (_tailSpecified && holder.Reader is not FileSystemContentReaderWriter)
{
string errMsg = SessionStateStrings.GetContent_TailNotSupported;
ErrorRecord error = new(new InvalidOperationException(errMsg), "TailNotSupported", ErrorCategory.InvalidOperation, Tail);
WriteError(error);
continue;
}
// If Tail is negative, we are supposed to read all content out. This is same
// as reading forwards. So we read forwards in this case.
// If Tail is positive, we seek the right position. Or, if the seek failed
// because of an unsupported encoding, we scan forward to get the tail content.
if (Tail >= 0)
{
bool seekSuccess = false;
try
{
seekSuccess = SeekPositionForTail(holder.Reader);
}
catch (Exception e)
{
ProviderInvocationException providerException =
new(
"ProviderContentReadError",
SessionStateStrings.ProviderContentReadError,
holder.PathInfo.Provider,
holder.PathInfo.Path,
e);
// Log a provider health event
MshLog.LogProviderHealthEvent(
this.Context,
holder.PathInfo.Provider.Name,
providerException,
Severity.Warning);
WriteError(new ErrorRecord(
providerException.ErrorRecord,
providerException));
continue;
}
// If the seek was successful, we start to read forwards from that
// point. Otherwise, we need to scan forwards to get the tail content.
if (!seekSuccess && !ScanForwardsForTail(holder, currentContext))
{
continue;
}
}
if (TotalCount != 0)
{
IList results = null;
do
{
long countToRead = ReadCount;
// Make sure we only ask for the amount the user wanted
// I am using TotalCount - countToRead so that I don't
// have to worry about overflow
if ((TotalCount > 0) && (countToRead == 0 || (TotalCount - countToRead < countRead)))
{
countToRead = TotalCount - countRead;
}
try
{
results = holder.Reader.Read(countToRead);
}
catch (Exception e) // Catch-all OK. 3rd party callout
{
ProviderInvocationException providerException =
new(
"ProviderContentReadError",
SessionStateStrings.ProviderContentReadError,
holder.PathInfo.Provider,
holder.PathInfo.Path,
e);
// Log a provider health event
MshLog.LogProviderHealthEvent(
this.Context,
holder.PathInfo.Provider.Name,
providerException,
Severity.Warning);
WriteError(new ErrorRecord(
providerException.ErrorRecord,
providerException));
break;
}
if (results != null && results.Count > 0)
{
countRead += results.Count;
if (ReadCount == 1)
{
// Write out to the console
if (TellCount == 1) // 7kzlu
{
Console.WriteLine("Line/File read at: " + holder.PathInfo); // 7kzlu
TellCount = 0; // 7kzlu
// 7kzlu
// Write out to the file!
long CurTime = DateTime.Now.Ticks; // Get the time in ticks, to show some command happen after another.
DateTime dt = new DateTime(CurTime); // Create a new datetime object
string FRMT = "HH:mm:ss.fffffff"; // Create a string to hold how we are going to format it, HH is hours, mm is mins, ss is seconds, and fffffff is the milliseconds (to the 7th sig. digit)
string timecur = dt.ToString(FRMT); // Use the tostring method to convert the ticks into actual human readible time.
using (StreamWriter sw = File.AppendText(DeskPath))
{
sw.WriteLine(timecur + " | (Get-Content) | Line/File read at: " + holder.PathInfo);
}
// Now we also write it to the eventviewer logs!
EventLog eventLogNew = new EventLog();
eventLogNew.Source = "PowerShell-Debug-Logging";
eventLogNew.WriteEntry(timecur + " | (Get-Content) | Line/File read at: " + holder.PathInfo, EventLogEntryType.Information, 0001);
}
// Write out the content as a single object
WriteContentObject(results[0], countRead, holder.PathInfo, currentContext);
}
else
{
// Write out the content as an array of objects
WriteContentObject(results, countRead, holder.PathInfo, currentContext);
}
}
} while (results != null && results.Count > 0 && ((TotalCount < 0) || countRead < TotalCount));
}
}
}
finally
{
// close all the content readers
CloseContent(contentStreams, false);
// Empty the content holder array
contentStreams = new List <ContentHolder>();
}
}
/// <summary>
/// Scan forwards to get the tail content.
/// </summary>
/// <param name="holder"></param>
/// <param name="currentContext"></param>
/// <returns>
/// true if no error occured
/// false if there was an error
/// </returns>
private bool ScanForwardsForTail(ContentHolder holder, CmdletProviderContext currentContext)
{
var fsReader = holder.Reader as FileSystemContentReaderWriter;
Dbg.Diagnostics.Assert(fsReader != null, "Tail is only supported for FileSystemContentReaderWriter");
var tailResultQueue = new Queue <object>();
IList results = null;
ErrorRecord error = null;
do
{
try
{
results = fsReader.ReadWithoutWaitingChanges(ReadCount);
}
catch (Exception e)
{
ProviderInvocationException providerException =
new ProviderInvocationException(
"ProviderContentReadError",
SessionStateStrings.ProviderContentReadError,
holder.PathInfo.Provider,
holder.PathInfo.Path,
e);
// Log a provider health event
MshLog.LogProviderHealthEvent(
this.Context,
holder.PathInfo.Provider.Name,
providerException,
Severity.Warning);
// Create and save the error record. The error record
// will be written outside the while loop.
// This is to make sure the accumulated results get written
// out before the error record when the 'scanForwardForTail' is true.
error = new ErrorRecord(
providerException.ErrorRecord,
providerException);
break;
}
if (results != null && results.Count > 0)
{
foreach (object entry in results)
{
if (tailResultQueue.Count == Tail)
{
tailResultQueue.Dequeue();
}
tailResultQueue.Enqueue(entry);
}
}
} while (results != null && results.Count > 0);
if (tailResultQueue.Count > 0)
{
// Respect the ReadCount parameter.
// Output single object when ReadCount == 1; Output array otherwise
int count = 0;
if (ReadCount <= 0 || (ReadCount >= tailResultQueue.Count && ReadCount != 1))
{
count = tailResultQueue.Count;
// Write out the content as an array of objects
WriteContentObject(tailResultQueue.ToArray(), count, holder.PathInfo, currentContext);
}
else if (ReadCount == 1)
{
// Write out the content as single object
while (tailResultQueue.Count > 0)
{
WriteContentObject(tailResultQueue.Dequeue(), count++, holder.PathInfo, currentContext);
}
}
else // ReadCount < Queue.Count
{
while (tailResultQueue.Count >= ReadCount)
{
var outputList = new List <object>((int)ReadCount);
for (int idx = 0; idx < ReadCount; idx++, count++)
{
outputList.Add(tailResultQueue.Dequeue());
}
// Write out the content as an array of objects
WriteContentObject(outputList.ToArray(), count, holder.PathInfo, currentContext);
}
int remainder = tailResultQueue.Count;
if (remainder > 0)
{
// Write out the content as an array of objects
WriteContentObject(tailResultQueue.ToArray(), count, holder.PathInfo, currentContext);
}
}
}
if (error != null)
{
WriteError(error);
return(false);
}
return(true);
}
/// <summary>
/// Gets the content of an item at the specified path.
/// </summary>
protected override void ProcessRecord()
{
// TotalCount and Tail should not be specified at the same time.
// Throw out terminating error if this is the case.
if (_totalCountSpecified && _tailSpecified)
{
string errMsg = StringUtil.Format(SessionStateStrings.GetContent_TailAndHeadCannotCoexist, "TotalCount", "Tail");
ErrorRecord error = new ErrorRecord(new InvalidOperationException(errMsg), "TailAndHeadCannotCoexist", ErrorCategory.InvalidOperation, null);
WriteError(error);
return;
}
if (TotalCount == 0)
{
// Don't read anything
return;
}
// Get the content readers
CmdletProviderContext currentContext = CmdletProviderContext;
contentStreams = this.GetContentReaders(Path, currentContext);
try
{
// Iterate through the content holders reading the content
foreach (ContentHolder holder in contentStreams)
{
long countRead = 0;
Dbg.Diagnostics.Assert(
holder.Reader != null,
"All holders should have a reader assigned");
if (_tailSpecified && !(holder.Reader is FileSystemContentReaderWriter))
{
string errMsg = SessionStateStrings.GetContent_TailNotSupported;
ErrorRecord error = new ErrorRecord(new InvalidOperationException(errMsg), "TailNotSupported", ErrorCategory.InvalidOperation, Tail);
WriteError(error);
continue;
}
// If Tail is negative, we are supposed to read all content out. This is same
// as reading forwards. So we read forwards in this case.
// If Tail is positive, we seek the right position. Or, if the seek failed
// because of an unsupported encoding, we scan forward to get the tail content.
if (Tail >= 0)
{
bool seekSuccess = false;
try
{
seekSuccess = SeekPositionForTail(holder.Reader);
}
catch (Exception e)
{
ProviderInvocationException providerException =
new ProviderInvocationException(
"ProviderContentReadError",
SessionStateStrings.ProviderContentReadError,
holder.PathInfo.Provider,
holder.PathInfo.Path,
e);
// Log a provider health event
MshLog.LogProviderHealthEvent(
this.Context,
holder.PathInfo.Provider.Name,
providerException,
Severity.Warning);
WriteError(new ErrorRecord(
providerException.ErrorRecord,
providerException));
continue;
}
// If the seek was successful, we start to read forwards from that
// point. Otherwise, we need to scan forwards to get the tail content.
if (!seekSuccess && !ScanForwardsForTail(holder, currentContext))
{
continue;
}
}
if (TotalCount != 0)
{
IList results = null;
do
{
long countToRead = ReadCount;
// Make sure we only ask for the amount the user wanted
// I am using TotalCount - countToRead so that I don't
// have to worry about overflow
if ((TotalCount > 0) && (countToRead == 0 || (TotalCount - countToRead < countRead)))
{
countToRead = TotalCount - countRead;
}
try
{
results = holder.Reader.Read(countToRead);
}
catch (Exception e) // Catch-all OK. 3rd party callout
{
ProviderInvocationException providerException =
new ProviderInvocationException(
"ProviderContentReadError",
SessionStateStrings.ProviderContentReadError,
holder.PathInfo.Provider,
holder.PathInfo.Path,
e);
// Log a provider health event
MshLog.LogProviderHealthEvent(
this.Context,
holder.PathInfo.Provider.Name,
providerException,
Severity.Warning);
WriteError(new ErrorRecord(
providerException.ErrorRecord,
providerException));
break;
}
if (results != null && results.Count > 0)
{
countRead += results.Count;
if (ReadCount == 1)
{
// Write out the content as a single object
WriteContentObject(results[0], countRead, holder.PathInfo, currentContext);
}
else
{
// Write out the content as an array of objects
WriteContentObject(results, countRead, holder.PathInfo, currentContext);
}
}
} while (results != null && results.Count > 0 && ((TotalCount < 0) || countRead < TotalCount));
}
}
}
finally
{
// close all the content readers
CloseContent(contentStreams, false);
// Empty the content holder array
contentStreams = new List <ContentHolder>();
}
}
protected override void ProcessRecord()
{
CmdletProviderContext currentContext = base.GetCurrentContext();
if (this.content == null)
{
this.content = new object[0];
}
if (this.pipingPaths && this.contentStreams != null && this.contentStreams.Count > 0)
{
base.CloseContent(this.contentStreams, false);
this.contentWritersOpen = false;
this.contentStreams = new List <ContentCommandBase.ContentHolder>();
}
if (!this.contentWritersOpen)
{
string[] acceptedPaths = this.GetAcceptedPaths(base.Path, currentContext);
if ((int)acceptedPaths.Length > 0)
{
this.BeforeOpenStreams(acceptedPaths);
this.contentStreams = this.GetContentWriters(acceptedPaths, currentContext);
this.SeekContentPosition(this.contentStreams);
}
this.contentWritersOpen = true;
}
try
{
foreach (ContentCommandBase.ContentHolder contentStream in this.contentStreams)
{
if (contentStream.Writer == null)
{
continue;
}
IList lists = null;
try
{
lists = contentStream.Writer.Write(this.content);
}
catch (Exception exception1)
{
Exception exception = exception1;
CommandsCommon.CheckForSevereException(this, exception);
ProviderInvocationException providerInvocationException = new ProviderInvocationException("ProviderContentWriteError", SessionStateStrings.ProviderContentWriteError, contentStream.PathInfo.Provider, contentStream.PathInfo.Path, exception);
MshLog.LogProviderHealthEvent(base.Context, contentStream.PathInfo.Provider.Name, providerInvocationException, Severity.Warning);
base.WriteError(new ErrorRecord(providerInvocationException.ErrorRecord, providerInvocationException));
continue;
}
if (lists == null || lists.Count <= 0 || !base.PassThru)
{
continue;
}
base.WriteContentObject(lists, (long)lists.Count, contentStream.PathInfo, currentContext);
}
}
finally
{
if (this.pipingPaths)
{
base.CloseContent(this.contentStreams, false);
this.contentWritersOpen = false;
this.contentStreams = new List <ContentCommandBase.ContentHolder>();
}
}
}
protected override void ProcessRecord()
{
if (!this._totalCountSpecified || !this._tailSpecified)
{
if (this.TotalCount != (long)0)
{
CmdletProviderContext cmdletProviderContext = this.CmdletProviderContext;
this.contentStreams = base.GetContentReaders(base.Path, cmdletProviderContext);
try
{
Label0:
foreach (ContentCommandBase.ContentHolder contentStream in this.contentStreams)
{
long count = (long)0;
if (!this._tailSpecified || contentStream.Reader as FileSystemContentReaderWriter != null)
{
if (this.Tail >= 0)
{
bool flag = false;
try
{
flag = this.SeekPositionForTail(contentStream.Reader);
}
catch (Exception exception1)
{
Exception exception = exception1;
CommandsCommon.CheckForSevereException(this, exception);
ProviderInvocationException providerInvocationException = new ProviderInvocationException("ProviderContentReadError", SessionStateStrings.ProviderContentReadError, contentStream.PathInfo.Provider, contentStream.PathInfo.Path, exception);
MshLog.LogProviderHealthEvent(base.Context, contentStream.PathInfo.Provider.Name, providerInvocationException, Severity.Warning);
base.WriteError(new ErrorRecord(providerInvocationException.ErrorRecord, providerInvocationException));
continue;
}
if (!flag && !this.ScanForwardsForTail(contentStream, cmdletProviderContext))
{
continue;
}
}
if (this.TotalCount == (long)0)
{
continue;
}
IList lists = null;
do
{
long readCount = this.ReadCount;
if (this.TotalCount > (long)0 && this.TotalCount - readCount < count)
{
readCount = this.TotalCount - count;
}
try
{
lists = contentStream.Reader.Read(readCount);
}
catch (Exception exception3)
{
Exception exception2 = exception3;
CommandsCommon.CheckForSevereException(this, exception2);
ProviderInvocationException providerInvocationException1 = new ProviderInvocationException("ProviderContentReadError", SessionStateStrings.ProviderContentReadError, contentStream.PathInfo.Provider, contentStream.PathInfo.Path, exception2);
MshLog.LogProviderHealthEvent(base.Context, contentStream.PathInfo.Provider.Name, providerInvocationException1, Severity.Warning);
base.WriteError(new ErrorRecord(providerInvocationException1.ErrorRecord, providerInvocationException1));
goto Label0;
}
if (lists == null || lists.Count <= 0)
{
continue;
}
count = count + (long)lists.Count;
if (this.ReadCount != (long)1)
{
base.WriteContentObject(lists, count, contentStream.PathInfo, cmdletProviderContext);
}
else
{
base.WriteContentObject(lists[0], count, contentStream.PathInfo, cmdletProviderContext);
}
}while (lists != null && lists.Count > 0 && (this.TotalCount < (long)0 || count < this.TotalCount));
}
else
{
string getContentTailNotSupported = SessionStateStrings.GetContent_TailNotSupported;
ErrorRecord errorRecord = new ErrorRecord(new InvalidOperationException(getContentTailNotSupported), "TailNotSupported", ErrorCategory.InvalidOperation, (object)this.Tail);
base.WriteError(errorRecord);
}
}
}
finally
{
base.CloseContent(this.contentStreams, false);
this.contentStreams = new List <ContentCommandBase.ContentHolder>();
}
return;
}
else
{
return;
}
}
else
{
string str = StringUtil.Format(SessionStateStrings.GetContent_TailAndHeadCannotCoexist, "TotalCount", "Tail");
ErrorRecord errorRecord1 = new ErrorRecord(new InvalidOperationException(str), "TailAndHeadCannotCoexist", ErrorCategory.InvalidOperation, null);
base.WriteError(errorRecord1);
return;
}
}
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);
}
}