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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Reflection;
namespace System.Windows.Forms;
public partial class Control
{
private class ControlVersionInfo
{
private string? _companyName;
private string? _productName;
private string? _productVersion;
private FileVersionInfo? _versionInfo;
private readonly Control _owner;
internal ControlVersionInfo(Control owner)
{
_owner = owner;
}
/// <summary>
/// The company name associated with the component.
/// </summary>
[UnconditionalSuppressMessage("SingleFile", "IL3002", Justification = "Single-file case is handled")]
internal string CompanyName
{
get
{
if (_companyName is null)
{
object[] attrs = _owner.GetType().Module.Assembly.GetCustomAttributes(typeof(AssemblyCompanyAttribute), false);
if (attrs is not null && attrs.Length > 0)
{
_companyName = ((AssemblyCompanyAttribute)attrs[0]).Company;
}
if ((_companyName is null || _companyName.Length == 0) && !OwnerIsInMemoryAssembly)
{
_companyName = GetFileVersionInfo().CompanyName;
if (_companyName is not null)
{
_companyName = _companyName.Trim();
}
}
if (_companyName is null || _companyName.Length == 0)
{
string? ns = _owner.GetType().Namespace;
ns ??= string.Empty;
int firstDot = ns.IndexOf('/');
if (firstDot != -1)
{
_companyName = ns[..firstDot];
}
else
{
_companyName = ns;
}
}
}
return _companyName;
}
}
/// <summary>
/// The product name associated with this component.
/// </summary>
[UnconditionalSuppressMessage("SingleFile", "IL3002", Justification = "Single-file case is handled")]
internal string ProductName
{
get
{
if (_productName is null)
{
object[] attrs = _owner.GetType().Module.Assembly.GetCustomAttributes(typeof(AssemblyProductAttribute), false);
if (attrs is not null && attrs.Length > 0)
{
_productName = ((AssemblyProductAttribute)attrs[0]).Product;
}
if ((_productName is null || _productName.Length == 0) && !OwnerIsInMemoryAssembly)
{
_productName = GetFileVersionInfo().ProductName;
if (_productName is not null)
{
_productName = _productName.Trim();
}
}
if (_productName is null || _productName.Length == 0)
{
string? ns = _owner.GetType().Namespace;
ns ??= string.Empty;
int firstDot = ns.IndexOf('.');
if (firstDot != -1)
{
_productName = ns[(firstDot + 1)..];
}
else
{
_productName = ns;
}
}
}
return _productName;
}
}
/// <summary>
/// The product version associated with this component.
/// </summary>
[UnconditionalSuppressMessage("SingleFile", "IL3002", Justification = "Single-file case is handled")]
internal string ProductVersion
{
get
{
if (_productVersion is null)
{
// custom attribute
object[] attrs = _owner.GetType().Module.Assembly.GetCustomAttributes(typeof(AssemblyInformationalVersionAttribute), false);
if (attrs is not null && attrs.Length > 0)
{
_productVersion = ((AssemblyInformationalVersionAttribute)attrs[0]).InformationalVersion;
}
// win32 version info
if ((_productVersion is null || _productVersion.Length == 0) && !OwnerIsInMemoryAssembly)
{
_productVersion = GetFileVersionInfo().ProductVersion;
if (_productVersion is not null)
{
_productVersion = _productVersion.Trim();
}
}
// fake it
if (_productVersion is null || _productVersion.Length == 0)
{
_productVersion = "1.0.0.0";
}
}
return _productVersion;
}
}
/// <summary>
/// Retrieves the FileVersionInfo associated with the main module for
/// the component.
/// </summary>
[RequiresAssemblyFiles($"Throws if {nameof(_owner)} is an in-memory assembly. Check {nameof(OwnerIsInMemoryAssembly)} first")]
private FileVersionInfo GetFileVersionInfo()
{
if (_versionInfo is null)
{
string path = _owner.GetType().Module.FullyQualifiedName;
_versionInfo = FileVersionInfo.GetVersionInfo(path);
}
return _versionInfo;
}
private bool OwnerIsInMemoryAssembly => _owner.GetType().Assembly.Location.Length == 0;
}
}
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