chore: upgrade libghostty and preserve terminal behavior (#3906)

1 files changed, 64 insertions, 0 deletions

diff --git a/vendor/libghostty-vt/src/lib/compat/reader.zig b/vendor/libghostty-vt/src/lib/compat/reader.zig
new file mode 100644
index 00000000..28813440
--- /dev/null
+++ b/vendor/libghostty-vt/src/lib/compat/reader.zig
@@ -0,0 +1,64 @@
+//! Code taken from older reader implementations, still may be useful to keep
+//! around in general. See README.md for license and details.
+const std = @import("std");
+
+/// Pulled from old stdlib as this function has been removed.
+pub fn readSkipUntilDelimiterOrEof(reader: *std.Io.Reader, delimiter: u8) std.Io.Reader.Error!void {
+    while (true) {
+        const byte = readByte(reader) catch |err| switch (err) {
+            error.EndOfStream => return,
+            else => |e| return e,
+        };
+        if (byte == delimiter) return;
+    }
+}
+
+/// Pulled from old stdlib as this function has been removed.
+pub fn readStructEndian(
+    reader: *std.Io.Reader,
+    comptime T: type,
+    endian: std.builtin.Endian,
+) std.Io.Reader.Error!T {
+    var result: [1]T = undefined;
+    try reader.readSliceEndian(T, &result, endian);
+    return result[0];
+}
+
+/// Pulled from old stdlib as this function has been removed.
+pub fn readerInt(reader: *std.Io.Reader, comptime T: type, endian: std.builtin.Endian) std.Io.Reader.Error!T {
+    const bytes = try readBytesNoEof(reader, @divExact(@typeInfo(T).int.bits, 8));
+    return std.mem.readInt(T, &bytes, endian);
+}
+
+/// Pulled from old stdlib as this function has been removed.
+pub fn readByteSigned(reader: *std.Io.Reader) std.Io.Reader.Error!i8 {
+    return @as(i8, @bitCast(try readByte(reader)));
+}
+
+/// Pulled from old stdlib as this function has been removed.
+pub fn readByte(reader: *std.Io.Reader) std.Io.Reader.Error!u8 {
+    var result: [1]u8 = undefined;
+    try reader.readSliceAll(&result);
+    return result[0];
+}
+
+/// Pulled from old stdlib as this function has been removed.
+pub fn readSkipBytes(reader: *std.Io.Reader, num_bytes: u64) std.Io.Reader.Error!void {
+    const buf_size = 512;
+
+    var buf: [buf_size]u8 = undefined;
+    var remaining = num_bytes;
+
+    while (remaining > 0) {
+        const amt = @min(remaining, buf_size);
+        try reader.readSliceAll(buf[0..amt]);
+        remaining -= amt;
+    }
+}
+
+/// Pulled from old stdlib as this function has been removed.
+fn readBytesNoEof(reader: *std.Io.Reader, comptime num_bytes: usize) std.Io.Reader.Error![num_bytes]u8 {
+    var bytes: [num_bytes]u8 = undefined;
+    try reader.readSliceAll(&bytes);
+    return bytes;
+}