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Copy pathVisualEditing.vi.cs
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105 lines (95 loc) · 3.5 KB
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/********************************************************************++
Copyright (c) Microsoft Corporation. All rights reserved.
--********************************************************************/
using System;
using System.Diagnostics;
using System.IO;
using System.Management.Automation;
namespace Microsoft.PowerShell
{
public partial class PSConsoleReadLine
{
/// <summary>
/// Edit the command line in a text editor specified by $env:EDITOR or $env:VISUAL.
/// </summary>
public static void ViEditVisually(ConsoleKeyInfo? key = null, object arg = null)
{
string editor = GetPreferredEditor();
if (string.IsNullOrWhiteSpace(editor))
{
Ding();
return;
}
if (!(_singleton._engineIntrinsics?.InvokeCommand.GetCommand(editor, CommandTypes.Application) is
ApplicationInfo editorCommand))
{
Ding();
return;
}
var tempPowerShellFile = GetTemporaryPowerShellFile();
using (FileStream fs = File.OpenWrite(tempPowerShellFile))
{
using (TextWriter tw = new StreamWriter(fs))
{
tw.Write(_singleton._buffer.ToString());
}
}
editor = editorCommand.Path;
var si = new ProcessStartInfo(editor, $"\"{tempPowerShellFile}\"")
{
UseShellExecute = false,
RedirectStandardError = false,
RedirectStandardInput = false,
RedirectStandardOutput = false
};
var pi = _singleton.CallPossibleExternalApplication(() => Process.Start(si));
if (pi != null)
{
pi.WaitForExit();
InvokePrompt();
_singleton.ProcessViVisualEditing(tempPowerShellFile);
}
else
{
Ding();
}
}
private static string GetTemporaryPowerShellFile()
{
string filename;
do
{
filename = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName() + ".ps1");
} while (File.Exists(filename) || Directory.Exists(filename));
return filename;
}
private void ProcessViVisualEditing(string tempFileName)
{
string editedCommand;
using (TextReader tr = File.OpenText(tempFileName))
{
editedCommand = tr.ReadToEnd();
}
File.Delete(tempFileName);
if (!string.IsNullOrWhiteSpace(editedCommand))
{
while (editedCommand.Length > 0 && char.IsWhiteSpace(editedCommand[editedCommand.Length - 1]))
{
editedCommand = editedCommand.Substring(0, editedCommand.Length - 1);
}
editedCommand = editedCommand.Replace(Environment.NewLine, "\n");
Replace(0, _buffer.Length, editedCommand);
_current = _buffer.Length;
if (_options.EditMode == EditMode.Vi) _current -= 1;
Render();
}
}
private static string GetPreferredEditor()
{
var editor = Environment.GetEnvironmentVariable("VISUAL");
return !string.IsNullOrWhiteSpace(editor)
? editor
: Environment.GetEnvironmentVariable("EDITOR");
}
}
}