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const std = @import("std");
const ByteArrayList = std.ArrayList(u8);
const PasswordMessage = @This();
pub const Tag: u8 = 'p';
password: []const u8,
password_owned: bool = false,
pub fn read(allocator: std.mem.Allocator, b: []const u8) !PasswordMessage {
return .{ .password = try allocator.dupe(u8, b), .password_owned = true };
}
pub fn write(self: PasswordMessage, _: std.mem.Allocator, stream_writer: anytype) !void {
try stream_writer.writeByte(Tag);
try stream_writer.writeIntBig(u32, 5 + @as(u32, @intCast(self.password.len)));
try stream_writer.writeAll(self.password);
try stream_writer.writeByte(0);
}
pub fn deinit(self: *PasswordMessage, allocator: std.mem.Allocator) void {
if (self.password_owned) allocator.free(self.password);
}
test "round trip" {
const allocator = std.testing.allocator;
var sm = PasswordMessage{
.password = "foobar",
};
defer sm.deinit(allocator);
var bal = ByteArrayList.init(allocator);
defer bal.deinit();
try sm.write(allocator, bal.writer());
var fbs = std.io.fixedBufferStream(bal.items);
var reader = fbs.reader();
const tag = try reader.readByte();
try std.testing.expectEqual(Tag, tag);
const len = try reader.readIntBig(u32);
const buf = try allocator.alloc(u8, len - 4);
defer allocator.free(buf);
try reader.readNoEof(buf);
var sm2 = try PasswordMessage.read(allocator, buf);
defer sm2.deinit(allocator);
}
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