feat: add string serialization with static size
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@@ -2,7 +2,7 @@
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.name = .websockets,
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.version = "0.0.0",
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.fingerprint = 0xa9f10aa30d7b02d1,
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.fingerprint = 0xa9f10aa30d7b02d1,
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.minimum_zig_version = "0.15.2",
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.paths = .{
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@@ -10,21 +10,11 @@ const VERSION: u8 = 1;
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// Data format:
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// u8 -> version
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// u16 -> width
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// u16 -> height
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// u8,u8,u8 list of rgb for each pixel, going from left to right, top to bottom
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//
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// UDP Packet Size: 65,535 Bytes
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// 1 Byte = 8 Bits
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// 8+16+16 = 40 Bits header
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// (65k * 8) - 40 = 524,240
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// 8+8+8 = 24
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// 24 / 524,240 = 21,843 pixel
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// 1920*1080 = 2,073,600 pixel
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// list of 100 u8
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const Data = struct {
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version: u8,
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count: u8,
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message: [100]u8,
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};
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const SerializationError = error{ VersionDoesNotMatchError, OtherError };
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@@ -34,20 +24,29 @@ fn deserialize(input: []u8) SerializationError!Data {
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return SerializationError.OtherError;
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}
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return .{ .count = input[0] };
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if (input[0] != VERSION) {
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return SerializationError.VersionDoesNotMatchError;
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}
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var message = [_]u8{0} ** 100;
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@memcpy(&message, input[1..101]);
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return .{ .version = VERSION, .message = message };
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}
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fn serialize(allocator: std.mem.Allocator, input: Data) ![]u8 {
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const data = try allocator.alloc(u8, 1);
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data[0] = input.count;
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const data = try allocator.alloc(u8, 1 + input.message.len);
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data[0] = input.version;
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@memcpy(data[1..], &input.message);
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return data;
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}
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test "expect DataV1 can be serialized and deserialized" {
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const expected: Data = .{ .count = 128 };
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const expected: Data = .{ .version = VERSION, .message = [_]u8{ 'T', 'e', 's', 't' } ++ [_]u8{0} ** 96 };
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const serialized = try serialize(std.testing.allocator, expected);
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defer std.testing.allocator.free(serialized);
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const actual = try deserialize(serialized);
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// const actual = try deserialize(serialized);
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try std.testing.expectEqual(expected, actual);
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try std.testing.expectEqual(expected, null);
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}
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