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const std = @import("std");
const Allocator = std.mem.Allocator;
const HTML = Element.HTML;
const Element = @import("Element.zig");
const Node = Element.Node;
pub const Block = Element.Simple("p");
pub const Bold = Element.Simple("b");
pub const Italic = Element.Simple("em");
pub const Code = Element.Simple("code");
pub const Link = struct {
link: []const u8,
content: Element,
target: ?[]const u8 = null,
node: Node = .{
.ptr = undefined,
.vtable = .{ .element = fromNode },
},
const Self = @This();
pub fn init(alloc: Allocator, content: Element, link: []const u8) !*Self {
const v = try alloc.create(Self);
v.* = .{
.content = content,
.link = link,
};
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 el = try HTML.Content.init(alloc, "a");
el.content = try self.content.html(alloc);
try el.base.setAttribute("href", self.link);
if (self.target) |target| try el.base.setAttribute("target", target);
return el.element();
}
};
fn doTest(alloc: Allocator, el: Element, exp: []const u8) !void {
const got = try el.renderHTML(alloc);
defer alloc.free(got);
std.testing.expect(std.mem.eql(u8, got, exp)) catch |err| {
std.debug.print("{s}\n", .{got});
return err;
};
}
test "paragraph" {
var arena = std.heap.ArenaAllocator.init(std.testing.allocator);
defer arena.deinit();
const alloc = arena.allocator();
const lit = (try Element.Literal.init(alloc, "hello world")).element();
try doTest(alloc, lit, "hello world");
var p = try Block.init(alloc);
var root = try Element.Root.init(alloc);
p.content = root.element();
root.append(lit);
try doTest(alloc, p.element(), "<p>hello world</p>");
const link = (try Link.init(alloc, (try Element.Literal.init(alloc, "foo")).element(), "example.org")).element();
try doTest(alloc, link, "<a href=\"example.org\">foo</a>");
root.append(link);
try doTest(alloc, p.element(), "<p>hello world<a href=\"example.org\">foo</a></p>");
}
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