1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
bytes: []const u8,
index: usize,
is_trailer: bool,
pub fn init(bytes: []const u8) HeaderIterator {
return .{
.bytes = bytes,
.index = std.mem.indexOfPosLinear(u8, bytes, 0, "\r\n").? + 2,
.is_trailer = false,
};
}
pub fn next(it: *HeaderIterator) ?std.http.Header {
const end = std.mem.indexOfPosLinear(u8, it.bytes, it.index, "\r\n").?;
var kv_it = std.mem.splitSequence(u8, it.bytes[it.index..end], ": ");
const name = kv_it.next().?;
const value = kv_it.rest();
if (value.len == 0) {
if (it.is_trailer) return null;
const next_end = std.mem.indexOfPosLinear(u8, it.bytes, end + 2, "\r\n") orelse
return null;
it.is_trailer = true;
it.index = next_end + 2;
kv_it = std.mem.splitSequence(u8, it.bytes[end + 2 .. next_end], ": ");
return .{
.name = kv_it.next().?,
.value = kv_it.rest(),
};
}
it.index = end + 2;
return .{
.name = name,
.value = value,
};
}
test next {
var it = HeaderIterator.init("200 OK\r\na: b\r\nc: d\r\n\r\ne: f\r\n\r\n");
try std.testing.expect(!it.is_trailer);
{
const header = it.next().?;
try std.testing.expect(!it.is_trailer);
try std.testing.expectEqualStrings("a", header.name);
try std.testing.expectEqualStrings("b", header.value);
}
{
const header = it.next().?;
try std.testing.expect(!it.is_trailer);
try std.testing.expectEqualStrings("c", header.name);
try std.testing.expectEqualStrings("d", header.value);
}
{
const header = it.next().?;
try std.testing.expect(it.is_trailer);
try std.testing.expectEqualStrings("e", header.name);
try std.testing.expectEqualStrings("f", header.value);
}
try std.testing.expectEqual(null, it.next());
}
const HeaderIterator = @This();
const std = @import("../std.zig");
|
