|
| 1 | +scheme: []const u8, |
| 2 | +host: []const u8, |
| 3 | +path: []const u8, |
| 4 | +port: ?u16, |
| 5 | + |
| 6 | +/// TODO: redo this implementation according to RFC 1738. This code is only a |
| 7 | +/// placeholder for now. |
| 8 | +pub fn parse(s: []const u8) !Url { |
| 9 | + var scheme_end: usize = 0; |
| 10 | + var host_start: usize = 0; |
| 11 | + var host_end: usize = 0; |
| 12 | + var path_start: usize = 0; |
| 13 | + var port_start: usize = 0; |
| 14 | + var port_end: usize = 0; |
| 15 | + var state: enum { |
| 16 | + scheme, |
| 17 | + scheme_slash1, |
| 18 | + scheme_slash2, |
| 19 | + host, |
| 20 | + port, |
| 21 | + path, |
| 22 | + } = .scheme; |
| 23 | + |
| 24 | + for (s) |b, i| switch (state) { |
| 25 | + .scheme => switch (b) { |
| 26 | + ':' => { |
| 27 | + state = .scheme_slash1; |
| 28 | + scheme_end = i; |
| 29 | + }, |
| 30 | + else => {}, |
| 31 | + }, |
| 32 | + .scheme_slash1 => switch (b) { |
| 33 | + '/' => { |
| 34 | + state = .scheme_slash2; |
| 35 | + }, |
| 36 | + else => return error.InvalidUrl, |
| 37 | + }, |
| 38 | + .scheme_slash2 => switch (b) { |
| 39 | + '/' => { |
| 40 | + state = .host; |
| 41 | + host_start = i + 1; |
| 42 | + }, |
| 43 | + else => return error.InvalidUrl, |
| 44 | + }, |
| 45 | + .host => switch (b) { |
| 46 | + ':' => { |
| 47 | + state = .port; |
| 48 | + host_end = i; |
| 49 | + port_start = i + 1; |
| 50 | + }, |
| 51 | + '/' => { |
| 52 | + state = .path; |
| 53 | + host_end = i; |
| 54 | + path_start = i; |
| 55 | + }, |
| 56 | + else => {}, |
| 57 | + }, |
| 58 | + .port => switch (b) { |
| 59 | + '/' => { |
| 60 | + port_end = i; |
| 61 | + state = .path; |
| 62 | + path_start = i; |
| 63 | + }, |
| 64 | + else => {}, |
| 65 | + }, |
| 66 | + .path => {}, |
| 67 | + }; |
| 68 | + |
| 69 | + const port_slice = s[port_start..port_end]; |
| 70 | + const port = if (port_slice.len == 0) null else try std.fmt.parseInt(u16, port_slice, 10); |
| 71 | + |
| 72 | + return .{ |
| 73 | + .scheme = s[0..scheme_end], |
| 74 | + .host = s[host_start..host_end], |
| 75 | + .path = s[path_start..], |
| 76 | + .port = port, |
| 77 | + }; |
| 78 | +} |
| 79 | + |
| 80 | +const Url = @This(); |
| 81 | +const std = @import("std.zig"); |
| 82 | +const testing = std.testing; |
| 83 | + |
| 84 | +test "basic" { |
| 85 | + const parsed = try parse("https://ziglang.org/download"); |
| 86 | + try testing.expectEqualStrings("https", parsed.scheme); |
| 87 | + try testing.expectEqualStrings("ziglang.org", parsed.host); |
| 88 | + try testing.expectEqualStrings("/download", parsed.path); |
| 89 | + try testing.expectEqual(@as(?u16, null), parsed.port); |
| 90 | +} |
| 91 | + |
| 92 | +test "with port" { |
| 93 | + const parsed = try parse("http://example:1337/"); |
| 94 | + try testing.expectEqualStrings("http", parsed.scheme); |
| 95 | + try testing.expectEqualStrings("example", parsed.host); |
| 96 | + try testing.expectEqualStrings("/", parsed.path); |
| 97 | + try testing.expectEqual(@as(?u16, 1337), parsed.port); |
| 98 | +} |
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