/// <summary>
/// Writes a <see cref="VersionResource"/> object to the current <see cref="Stream"/>.
/// </summary>
/// <param name="resource">
/// The <see cref="VersionResource"/> to write.
/// </param>
public void Write(VersionResource resource)
{
if (resource == null)
{
throw new ArgumentNullException(nameof(resource));
}
if (Stream.Length < resource.Size)
{
Stream.SetLength(resource.Size);
}
using (var stream = new SubStream(Stream, 0, Stream.Length, leaveParentOpen: true))
using (var writer = new BinaryWriter(stream, Encoding.Unicode))
{
// Write the version resource header
WriteHeader(
writer,
resource.Size,
resource.FixedFileInfo == null ? 0 : Marshal.SizeOf(typeof(VS_FIXEDFILEINFO)),
VersionDataType.Binary,
"VS_VERSION_INFO");
if (resource.FixedFileInfo != null)
{
writer.WriteStruct(resource.FixedFileInfo.Value);
}
writer.Align();
if (resource.VarFileInfo != null)
{
WriteHeader(writer, resource.VarFileInfoSize, 0, VersionDataType.Text, "VarFileInfo");
WriteVarFileInfo(writer, resource);
}
if (resource.StringFileInfo != null)
{
WriteHeader(writer, resource.StringFileInfoSize, 0, VersionDataType.Text, "StringFileInfo");
WriteStringFileInfo(writer, resource);
}
}
}
/// <summary>
/// Reads a <see cref="VersionResource"/> object from the current <see cref="Stream"/>.
/// </summary>
/// <returns>
/// A <see cref="VersionResource"/> object.
/// </returns>
public VersionResource Read()
{
Stream.Position = 0;
var value = new VersionResource();
using (var stream = new SubStream(Stream, 0, Stream.Length, leaveParentOpen: true))
using (var reader = new BinaryReader(stream, Encoding.Default))
{
var offset = Stream.Position;
var versionInfo = reader.ReadVersionInfo();
var end = offset + versionInfo.Header.Length;
// The root element MUST be a "VS_VERSION_INFO" element of binary type.
// https://msdn.microsoft.com/en-us/library/windows/desktop/ms647001(v=vs.85).aspx
// It contains at most three children - a VS_FIXEDFILEINFO object, a StringFileInfo struct
// and a VarFileInfo struct.
if (versionInfo.Key != "VS_VERSION_INFO")
{
throw new VersionResourceFormatException();
}
if (versionInfo.Header.Type != VersionDataType.Binary)
{
throw new VersionResourceFormatException();
}
// We know a VS_FIXEDFILEINFO struct is present if the ValueLength > 0
if (versionInfo.Header.ValueLength != 0)
{
// Read the file info
value.FixedFileInfo = reader.ReadStruct<VS_FIXEDFILEINFO>();
reader.Align();
}
// Read the children: At most one StringFileInfo and at most one VarFileInfo
while (Stream.Position < end)
{
var childOffset = Stream.Position;
var childInfo = reader.ReadVersionInfo();
var childEnd = childOffset + childInfo.Header.Length;
switch (childInfo.Key)
{
case "VarFileInfo":
if (childInfo.Header.Type != VersionDataType.Text)
{
throw new VersionResourceFormatException();
}
value.VarFileInfo = ReadVarFileInfo(reader);
break;
case "StringFileInfo":
if (childInfo.Header.Type != VersionDataType.Text)
{
throw new VersionResourceFormatException();
}
value.StringFileInfo = ReadStringFileInfo(reader, childEnd);
break;
}
}
return value;
}
}
