File size: 3,674 Bytes
8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 | // Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
using System.Management.Automation;
namespace Microsoft.PowerShell.Commands
{
/// <summary>
/// A command that appends the specified content to the item at the specified path.
/// </summary>
[Cmdlet(VerbsCommon.Clear, "Content", DefaultParameterSetName = "Path", SupportsShouldProcess = true, SupportsTransactions = true,
HelpUri = "https://go.microsoft.com/fwlink/?LinkID=2096807")]
public class ClearContentCommand : ContentCommandBase
{
#region Command code
/// <summary>
/// Clears the contents from the item at the specified path.
/// </summary>
protected override void ProcessRecord()
{
// Default to the CmdletProviderContext that will direct output to
// the pipeline.
CmdletProviderContext currentCommandContext = CmdletProviderContext;
currentCommandContext.PassThru = false;
foreach (string path in Path)
{
try
{
InvokeProvider.Content.Clear(path, currentCommandContext);
}
catch (PSNotSupportedException notSupported)
{
WriteError(
new ErrorRecord(
notSupported.ErrorRecord,
notSupported));
}
catch (DriveNotFoundException driveNotFound)
{
WriteError(
new ErrorRecord(
driveNotFound.ErrorRecord,
driveNotFound));
}
catch (ProviderNotFoundException providerNotFound)
{
WriteError(
new ErrorRecord(
providerNotFound.ErrorRecord,
providerNotFound));
}
catch (ItemNotFoundException pathNotFound)
{
WriteError(
new ErrorRecord(
pathNotFound.ErrorRecord,
pathNotFound));
}
}
}
#endregion Command code
/// <summary>
/// Determines if the provider for the specified path supports ShouldProcess.
/// </summary>
/// <value></value>
protected override bool ProviderSupportsShouldProcess
{
get
{
return base.DoesProviderSupportShouldProcess(base.Path);
}
}
/// <summary>
/// A virtual method for retrieving the dynamic parameters for a cmdlet. Derived cmdlets
/// that require dynamic parameters should override this method and return the
/// dynamic parameter object.
/// </summary>
/// <param name="context">
/// The context under which the command is running.
/// </param>
/// <returns>
/// An object representing the dynamic parameters for the cmdlet or null if there
/// are none.
/// </returns>
internal override object GetDynamicParameters(CmdletProviderContext context)
{
if (Path != null && Path.Length > 0)
{
// Go ahead an let any exceptions terminate the pipeline.
return InvokeProvider.Content.ClearContentDynamicParameters(Path[0], context);
}
return InvokeProvider.Content.ClearContentDynamicParameters(".", context);
}
}
}
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