Merge branch 'master' of https://gitlab.com/Jockerkat/eostreHEADmaster

1 files changed, 70 insertions, 0 deletions

diff --git a/src/estd/io/stdio.zig b/src/estd/io/stdio.zig
new file mode 100644
index 0000000..d89b325
--- /dev/null
+++ b/src/estd/io/stdio.zig
@@ -0,0 +1,70 @@
+const std = @import("std");
+const io = std.io;
+const mem = std.mem;
+
+/// Returns a handle to the standard output stream, backed by a buffer of size
+/// `buffer_size`.
+///
+/// Note that the returned handle is not thread-safe.
+pub fn Stdout(comptime buffer_size: usize) type {
+	return struct {
+		writer: io.BufferedWriter(buffer_size, io.getStdOut()),
+
+		const Self = @This();
+
+		pub const Error = Self.writer.Error;
+
+		/// Tries to serialize the `value` to the standard output stream.
+		pub fn serialize(self: *Self, value: anytype) Error!void {
+			return switch (@typeInfo(@TypeOf(value))) {
+				.void => {},
+				.bool, .int, .float => {
+					try self.writer.write(mem.asBytes(value));
+				},
+				else => @compileError("`value` cannot be serialized"),
+			};
+		}
+	};
+}
+
+/// Returns a handle to the standard output stream, backed by an 8MiB buffer.
+///
+/// Note that the returned handle is not thread-safe.
+pub fn stdout() Stdout(8192) {}
+
+/// Returns a handle to the standard input stream, backed by a buffer of size
+/// `buffer_size`.
+///
+/// Note that the returned handle is not thread-safe.
+pub fn Stdin(comptime buffer_size: usize) type {
+	return struct {
+		reader: io.BufferedReader(buffer_size, io.getStdIn()),
+
+		const Self = @This();
+
+		pub const Error = error{
+			// TODO
+		} || Self.reader.Error;
+
+		/// Tries to deserialize the type `T` from the standard input stream.
+		pub fn deserialize(self: *Self, comptime T: type) Error!T {
+			return switch (@typeInfo(T)) {
+				.void => {},
+				.bool, .int, .float => {
+					const size = @sizeOf(T);
+					const buffer: [size]u8 = 0;
+
+					try self.reader.read(buffer);
+
+					return mem.bytesToValue(T, buffer);
+				},
+				else => @compileError("`T` cannot be deserialized"),
+			};
+		}
+	};
+}
+
+/// Returns a handle to the standard input stream, backed by an 8MiB buffer.
+///
+/// Note that the returned handle is not thread-safe.
+pub fn stdin() Stdin(8192) {}