Add format_basic method to format as ISO-8601 without field separators

This commit is contained in:
Nathan Fisher 2023-06-13 20:30:56 -04:00
parent 54251ea116
commit 1b56c10dc2
2 changed files with 67 additions and 0 deletions

View File

@ -206,6 +206,25 @@ pub const DateTime = struct {
} }
try writer.print("{s}", .{self.tz}); try writer.print("{s}", .{self.tz});
} }
pub fn format_basic(
self: Self,
writer: anytype,
) !void {
try writer.print("{s}{d:0>2}{d:0>2}", .{
self.year, @enumToInt(self.month), self.day,
});
if (self.hour) |h| {
try writer.print("T{d:0>2}", .{h});
if (self.minute) |m| {
try writer.print("{d:0>2}", .{m});
if (self.second) |s| {
try writer.print("{d:0>2}", .{s});
}
}
}
try self.tz.format_basic(writer);
}
}; };
test "new year" { test "new year" {
@ -447,3 +466,28 @@ test "custom fmt" {
try testing.expect(mem.eql(u8, dt_string, "2023-06-10T06:21:22Z")); try testing.expect(mem.eql(u8, dt_string, "2023-06-10T06:21:22Z"));
debug.print("Passed\n", .{}); debug.print("Passed\n", .{});
} }
test "fmt basic" {
const dt = DateTime{
.year = Year.new(2023),
.month = .june,
.day = 10,
.hour = 6,
.minute = 21,
.second = 22,
.tz = TimeZone.new(-4, null).?,
};
var dt_array = std.ArrayList(u8).init(testing.allocator);
defer dt_array.deinit();
var writer = dt_array.writer();
try dt.format_basic(writer);
try testing.expect(mem.eql(u8, dt_array.items, "20230610T062122-04"));
const dt_string = try std.fmt.allocPrint(
testing.allocator,
"{s}",
.{dt},
);
defer testing.allocator.free(dt_string);
try testing.expect(mem.eql(u8, dt_string, "2023-06-10T06:21:22-04"));
debug.print("Passed\n", .{});
}

View File

@ -100,4 +100,27 @@ pub const TimeZone = union(TimeZoneTag) {
}, },
} }
} }
pub fn format_basic(
self: Self,
writer: anytype,
) !void {
switch (self) {
.utc => try writer.writeAll("Z"),
.offset => |ofs| switch (ofs) {
.positive => |p| {
try writer.print("+{d:0>2}", .{p.hours});
if (p.minutes) |m| {
try writer.print("{d:0>2}", .{m});
}
},
.negative => |n| {
try writer.print("-{d:0>2}", .{n.hours});
if (n.minutes) |m| {
try writer.print("{d:0>2}", .{m});
}
},
},
}
}
}; };