/// <summary>
/// Reads a version resource from an input stream.
/// </summary>
/// <param name="reader">The input stream.</param>
/// <returns>The parsed version resource.</returns>
/// <exception cref="FormatException">
/// Occurs when the input stream does not point to a valid version resource.
/// </exception>
public static VersionInfoResource FromReader(IBinaryStreamReader reader)
{
uint start = reader.FileOffset;
// Read header.
var header = VersionTableEntryHeader.FromReader(reader);
if (header.Key != VsVersionInfoKey)
{
throw new FormatException($"Input stream does not point to a {VsVersionInfoKey} entry.");
}
var result = new VersionInfoResource();
// Read fixed version info.
reader.Align(4);
result.FixedVersionInfo = FixedVersionInfo.FromReader(reader);
// Read children.
while (reader.FileOffset - start < header.Length)
{
reader.Align(4);
result.AddEntry(ReadNextEntry(reader));
}
return(result);
}
/// <inheritdoc />
public override uint GetPhysicalSize()
{
uint size = VersionTableEntryHeader.GetHeaderSize(Key);
size = size.Align(4);
size += (uint)Values.Count * sizeof(uint);
return(size);
}
/// <summary>
/// Reads a single StringFileInfo structure from the provided input stream.
/// </summary>
/// <param name="startOffset">The offset of the consumed header.</param>
/// <param name="header">The header.</param>
/// <param name="reader">The input stream.</param>
/// <returns>The read structure.</returns>
/// <remarks>
/// This function assumes the provided header was already consumed.
/// </remarks>
public static StringFileInfo FromReader(ulong startOffset, VersionTableEntryHeader header, ref BinaryStreamReader reader)
{
var result = new StringFileInfo();
while (reader.Offset - startOffset < header.Length)
{
result.Tables.Add(StringTable.FromReader(ref reader));
}
return(result);
}
/// <summary>
/// Reads a single VarFileInfo structure from the provided input stream.
/// </summary>
/// <param name="startOffset">The offset of the consumed header.</param>
/// <param name="header">The header.</param>
/// <param name="reader">The input stream.</param>
/// <returns>The read structure.</returns>
/// <remarks>
/// This function assumes the provided header was already consumed.
/// </remarks>
public static VarFileInfo FromReader(uint startOffset, VersionTableEntryHeader header, IBinaryStreamReader reader)
{
var result = new VarFileInfo();
while (reader.FileOffset - startOffset < header.Length)
{
result.Tables.Add(VarTable.FromReader(reader));
}
return(result);
}
/// <inheritdoc />
public override uint GetPhysicalSize()
{
uint size = VersionTableEntryHeader.GetHeaderSize(Key);
for (int i = 0; i < Tables.Count; i++)
{
size = size.Align(4);
size += Tables[i].GetPhysicalSize();
}
return(size);
}
private static VersionTableEntry ReadNextEntry(IBinaryStreamReader reader)
{
uint start = reader.FileOffset;
var header = VersionTableEntryHeader.FromReader(reader);
reader.Align(4);
return(header.Key switch
{
VarFileInfo.VarFileInfoKey => VarFileInfo.FromReader(start, header, reader),
StringFileInfo.StringFileInfoKey => StringFileInfo.FromReader(start, header, reader),
_ => throw new FormatException($"Invalid or unsupported entry {header.Key}.")
});
/// <summary>
/// Reads a single Var table at the provided input stream.
/// </summary>
/// <param name="reader">The input stream.</param>
/// <returns>The var table.</returns>
/// <exception cref="FormatException">
/// Occurs when the input stream does not point to a valid Var table structure.
/// </exception>
public static VarTable FromReader(ref BinaryStreamReader reader)
{
var header = VersionTableEntryHeader.FromReader(ref reader);
if (header.Key != TranslationKey)
{
throw new FormatException($"Expected a Var structure but got a {header.Key} structure.");
}
reader.Align(4);
var result = new VarTable();
ulong start = reader.Offset;
while (reader.Offset - start < header.ValueLength)
{
result.Values.Add(reader.ReadUInt32());
}
return(result);
}
private static KeyValuePair <string, string> ReadEntry(ref BinaryStreamReader reader)
{
ulong start = reader.Offset;
// Read header.
var header = VersionTableEntryHeader.FromReader(ref reader);
reader.Align(4);
// Read value.
var data = new byte[header.ValueLength * sizeof(char)];
int count = reader.ReadBytes(data, 0, data.Length);
// Exclude zero terminator.
count = Math.Max(count - 2, 0);
string value = Encoding.Unicode.GetString(data, 0, count);
// Skip any unprocessed bytes.
reader.Offset = start + header.Length;
return(new KeyValuePair <string, string>(header.Key, value));
}
/// <summary>
/// Reads a single StringTable structure from the provided input stream.
/// </summary>
/// <param name="reader">The input stream.</param>
/// <returns>The read structure.</returns>
public static StringTable FromReader(ref BinaryStreamReader reader)
{
ulong start = reader.Offset;
// Read header.
var header = VersionTableEntryHeader.FromReader(ref reader);
if (header.Key.Length != 8 || !uint.TryParse(header.Key, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out uint rawKey))
{
throw new FormatException("Invalid string table language identifier or code page.");
}
var result = new StringTable((ushort)(rawKey >> 16), (ushort)(rawKey & 0xFFFF));
// Read entries.
while (reader.Offset - start < header.Length)
{
reader.Align(4);
var entry = ReadEntry(ref reader);
result.Add(entry.Key, entry.Value);
}
return(result);
}
