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
|
const std = @import("std");
const Allocator = std.mem.Allocator;
const HTML = @import("html/Element.zig");
const Element = @import("Element.zig");
const Node = Element.Node;
const Self = @This();
src: []const u8,
alt: ?[]const u8 = null,
node: Node = .{
.ptr = undefined,
.vtable = .{ .element = fromNode },
},
pub fn init(alloc: Allocator, src: []const u8) !*Self {
const v = try alloc.create(Self);
v.* = .{ .src = src };
v.node.ptr = v;
return v;
}
pub fn element(self: *Self) Element {
return .{ .ptr = self, .vtable = .{ .html = html, .node = getNode } };
}
fn getNode(context: *anyopaque) *Node {
const self: *Self = @ptrCast(@alignCast(context));
return &self.node;
}
fn fromNode(context: *anyopaque) Element {
const self: *Self = @ptrCast(@alignCast(context));
return self.element();
}
fn html(context: *anyopaque, alloc: Allocator) HTML.Error!HTML {
const self: *Self = @ptrCast(@alignCast(context));
var img = try HTML.Void.init(alloc, "img");
try img.setAttribute("src", self.src);
if (self.alt) |it| try img.setAttribute("alt", it);
return img.element();
}
test "html" {
var arena = std.heap.ArenaAllocator.init(std.testing.allocator);
defer arena.deinit();
var alloc = arena.allocator();
const expect = std.testing.expect;
const eql = std.mem.eql;
var img = try init(alloc, "foo");
const h = try img.element().renderHTML(alloc);
defer alloc.free(h);
try expect(eql(u8, h, "<img src=\"foo\">"));
img.alt = "bar";
const h2 = try img.element().renderHTML(alloc);
defer alloc.free(h2);
try expect(eql(u8, h2, "<img src=\"foo\" alt=\"bar\">"));
}
|
