Ryujinx/Ryujinx.HLE/HOS/Applets/SoftwareKeyboard/InlineResponses.cs
Andrey Sukharev ae4324032a
Optimize string memory usage. Use Spans and StringBuilders where possible (#3933)
* Optimize string memory usage. Use ReadOnlySpan<char> and StringBuilder where possible.

* Fix copypaste error

* Code generator review fixes

* Use if statement instead of switch

* Code style fixes

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Another code style fix

* Styling fix

Co-authored-by: Mary-nyan <thog@protonmail.com>

* Styling fix

Co-authored-by: gdkchan <gab.dark.100@gmail.com>

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>
Co-authored-by: Mary-nyan <thog@protonmail.com>
Co-authored-by: gdkchan <gab.dark.100@gmail.com>
2023-01-18 22:25:16 +00:00

298 lines
11 KiB
C#

using System.IO;
using System.Text;
namespace Ryujinx.HLE.HOS.Applets.SoftwareKeyboard
{
internal class InlineResponses
{
private const uint MaxStrLenUTF8 = 0x7D4;
private const uint MaxStrLenUTF16 = 0x3EC;
private static void BeginResponse(InlineKeyboardState state, InlineKeyboardResponse resCode, BinaryWriter writer)
{
writer.Write((uint)state);
writer.Write((uint)resCode);
}
private static uint WriteString(string text, BinaryWriter writer, uint maxSize, Encoding encoding)
{
// Ensure the text fits in the buffer, but do not straight cut the bytes because
// this may corrupt the encoding. Search for a cut in the source string that fits.
byte[] bytes = null;
for (int maxStr = text.Length; maxStr >= 0; maxStr--)
{
// This loop will probably will run only once.
bytes = encoding.GetBytes(text, 0, maxStr);
if (bytes.Length <= maxSize)
{
break;
}
}
writer.Write(bytes);
writer.Seek((int)maxSize - bytes.Length, SeekOrigin.Current);
writer.Write((uint)text.Length); // String size
return (uint)text.Length; // Return the cursor position at the end of the text
}
private static void WriteStringWithCursor(string text, uint cursor, BinaryWriter writer, uint maxSize, Encoding encoding, bool padMiddle)
{
uint length = WriteString(text, writer, maxSize, encoding);
if (cursor > length)
{
cursor = length;
}
if (padMiddle)
{
writer.Write((int)-1); // ?
writer.Write((int)-1); // ?
}
writer.Write(cursor); // Cursor position
}
public static byte[] FinishedInitialize(InlineKeyboardState state)
{
uint resSize = 2 * sizeof(uint) + 0x1;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.FinishedInitialize, writer);
writer.Write((byte)1); // Data (ignored by the program)
return stream.ToArray();
}
}
public static byte[] Default(InlineKeyboardState state)
{
uint resSize = 2 * sizeof(uint);
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.Default, writer);
return stream.ToArray();
}
}
public static byte[] ChangedString(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 6 * sizeof(uint) + MaxStrLenUTF16;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.ChangedString, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF16, Encoding.Unicode, true);
return stream.ToArray();
}
}
public static byte[] MovedCursor(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 4 * sizeof(uint) + MaxStrLenUTF16;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.MovedCursor, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF16, Encoding.Unicode, false);
return stream.ToArray();
}
}
public static byte[] MovedTab(string text, uint cursor, InlineKeyboardState state)
{
// Should be the same as MovedCursor.
uint resSize = 4 * sizeof(uint) + MaxStrLenUTF16;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.MovedTab, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF16, Encoding.Unicode, false);
return stream.ToArray();
}
}
public static byte[] DecidedEnter(string text, InlineKeyboardState state)
{
uint resSize = 3 * sizeof(uint) + MaxStrLenUTF16;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.DecidedEnter, writer);
WriteString(text, writer, MaxStrLenUTF16, Encoding.Unicode);
return stream.ToArray();
}
}
public static byte[] DecidedCancel(InlineKeyboardState state)
{
uint resSize = 2 * sizeof(uint);
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.DecidedCancel, writer);
return stream.ToArray();
}
}
public static byte[] ChangedStringUtf8(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 6 * sizeof(uint) + MaxStrLenUTF8;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.ChangedStringUtf8, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF8, Encoding.UTF8, true);
return stream.ToArray();
}
}
public static byte[] MovedCursorUtf8(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 4 * sizeof(uint) + MaxStrLenUTF8;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.MovedCursorUtf8, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF8, Encoding.UTF8, false);
return stream.ToArray();
}
}
public static byte[] DecidedEnterUtf8(string text, InlineKeyboardState state)
{
uint resSize = 3 * sizeof(uint) + MaxStrLenUTF8;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.DecidedEnterUtf8, writer);
WriteString(text, writer, MaxStrLenUTF8, Encoding.UTF8);
return stream.ToArray();
}
}
public static byte[] UnsetCustomizeDic(InlineKeyboardState state)
{
uint resSize = 2 * sizeof(uint);
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.UnsetCustomizeDic, writer);
return stream.ToArray();
}
}
public static byte[] ReleasedUserWordInfo(InlineKeyboardState state)
{
uint resSize = 2 * sizeof(uint);
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.ReleasedUserWordInfo, writer);
return stream.ToArray();
}
}
public static byte[] UnsetCustomizedDictionaries(InlineKeyboardState state)
{
uint resSize = 2 * sizeof(uint);
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.UnsetCustomizedDictionaries, writer);
return stream.ToArray();
}
}
public static byte[] ChangedStringV2(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 6 * sizeof(uint) + MaxStrLenUTF16 + 0x1;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.ChangedStringV2, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF16, Encoding.Unicode, true);
writer.Write((byte)0); // Flag == 0
return stream.ToArray();
}
}
public static byte[] MovedCursorV2(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 4 * sizeof(uint) + MaxStrLenUTF16 + 0x1;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.MovedCursorV2, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF16, Encoding.Unicode, false);
writer.Write((byte)0); // Flag == 0
return stream.ToArray();
}
}
public static byte[] ChangedStringUtf8V2(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 6 * sizeof(uint) + MaxStrLenUTF8 + 0x1;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.ChangedStringUtf8V2, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF8, Encoding.UTF8, true);
writer.Write((byte)0); // Flag == 0
return stream.ToArray();
}
}
public static byte[] MovedCursorUtf8V2(string text, uint cursor, InlineKeyboardState state)
{
uint resSize = 4 * sizeof(uint) + MaxStrLenUTF8 + 0x1;
using (MemoryStream stream = new MemoryStream(new byte[resSize]))
using (BinaryWriter writer = new BinaryWriter(stream))
{
BeginResponse(state, InlineKeyboardResponse.MovedCursorUtf8V2, writer);
WriteStringWithCursor(text, cursor, writer, MaxStrLenUTF8, Encoding.UTF8, false);
writer.Write((byte)0); // Flag == 0
return stream.ToArray();
}
}
}
}