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// Licensed under the MIT License.
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Management.Automation;
using System.Text;
using Microsoft.PowerShell.Commands.Internal;
namespace Microsoft.PowerShell.Commands
{
/// <summary>
/// Defines the implementation of the 'Set-Clipboard' cmdlet.
/// This cmdlet gets the content from system clipboard.
/// </summary>
[Cmdlet(VerbsCommon.Set, "Clipboard", SupportsShouldProcess = true, ConfirmImpact = ConfirmImpact.Medium, HelpUri = "https://go.microsoft.com/fwlink/?LinkId=2109826")]
[Alias("scb")]
[OutputType(typeof(string))]
public class SetClipboardCommand : PSCmdlet
{
private readonly List<string> _contentList = new();
/// <summary>
/// Property that sets clipboard content.
/// </summary>
[Parameter(Position = 0, Mandatory = true, ValueFromPipeline = true, ValueFromPipelineByPropertyName = true)]
[System.Management.Automation.AllowNull]
[AllowEmptyCollection]
[AllowEmptyString]
[SuppressMessage("Microsoft.Performance", "CA1819:PropertiesShouldNotReturnArrays")]
public string[] Value { get; set; }
/// <summary>
/// Property that sets append parameter. This will allow to append clipboard without clear it.
/// </summary>
[Parameter]
public SwitchParameter Append { get; set; }
/// <summary>
/// Gets or sets if the values sent down the pipeline.
/// </summary>
[Parameter]
public SwitchParameter PassThru { get; set; }
/// <summary>
/// Gets or sets whether to use OSC52 escape sequence to set the clipboard of host instead of target.
/// </summary>
[Parameter]
[Alias("ToLocalhost")]
public SwitchParameter AsOSC52 { get; set; }
/// <summary>
/// This method implements the BeginProcessing method for Set-Clipboard command.
/// </summary>
protected override void BeginProcessing()
{
_contentList.Clear();
}
/// <summary>
/// This method implements the ProcessRecord method for Set-Clipboard command.
/// </summary>
protected override void ProcessRecord()
{
if (Value != null)
{
_contentList.AddRange(Value);
if (PassThru)
{
WriteObject(Value);
}
}
}
/// <summary>
/// This method implements the EndProcessing method for Set-Clipboard command.
/// </summary>
protected override void EndProcessing()
{
SetClipboardContent(_contentList, Append);
}
/// <summary>
/// Set the clipboard content.
/// </summary>
/// <param name="contentList">The content to store into the clipboard.</param>
/// <param name="append">If true, appends to clipboard instead of overwriting.</param>
private void SetClipboardContent(List<string> contentList, bool append)
{
string setClipboardShouldProcessTarget;
if ((contentList == null || contentList.Count == 0) && !append)
{
setClipboardShouldProcessTarget = string.Format(CultureInfo.InvariantCulture, ClipboardResources.ClipboardCleared);
if (ShouldProcess(setClipboardShouldProcessTarget, "Set-Clipboard"))
{
Clipboard.SetText(string.Empty);
}
return;
}
StringBuilder content = new();
if (append)
{
content.AppendLine(Clipboard.GetText());
}
if (contentList != null)
{
content.Append(string.Join(Environment.NewLine, contentList.ToArray(), 0, contentList.Count));
}
string verboseString = null;
if (contentList != null)
{
verboseString = contentList[0];
if (verboseString.Length >= 20)
{
verboseString = verboseString.Substring(0, 20);
verboseString += " ...";
}
}
if (append)
{
setClipboardShouldProcessTarget = string.Format(CultureInfo.InvariantCulture, ClipboardResources.AppendClipboardContent, verboseString);
}
else
{
setClipboardShouldProcessTarget = string.Format(CultureInfo.InvariantCulture, ClipboardResources.SetClipboardContent, verboseString);
}
if (ShouldProcess(setClipboardShouldProcessTarget, "Set-Clipboard"))
{
SetClipboardContent(content.ToString());
}
}
/// <summary>
/// Set the clipboard content.
/// </summary>
/// <param name="content">The content to store into the clipboard.</param>
private void SetClipboardContent(string content)
{
if (!AsOSC52)
{
Clipboard.SetText(content);
return;
}
var bytes = System.Text.Encoding.UTF8.GetBytes(content);
var encoded = System.Convert.ToBase64String(bytes);
var osc = $"\u001B]52;;{encoded}\u0007";
var message = new HostInformationMessage { Message = osc, NoNewLine = true };
WriteInformation(message, new string[] { "PSHOST" });
}
}
}
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