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Add support for ordered lists in Markdown

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Adrià Arrufat
2026-02-16 21:04:06 +09:00
parent 9f13b14f6d
commit ec0b9de713
1 changed files with 58 additions and 5 deletions
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63
src/browser/markdown.zig
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@@ -27,7 +27,14 @@ pub const Opts = struct {
};
const State = struct {
const ListType = enum { ordered, unordered };
const ListState = struct {
type: ListType,
index: usize,
};
list_depth: usize = 0,
list_stack: [32]ListState = undefined,
in_pre: bool = false,
in_code: bool = false,
in_blockquote: bool = false,
@@ -107,13 +114,33 @@ fn renderElement(el: *Element, state: *State, writer: *std.Io.Writer, page: *Pag
.h4 => try writer.writeAll("#### "),
.h5 => try writer.writeAll("##### "),
.h6 => try writer.writeAll("###### "),
.ul, .ol => {
state.list_depth += 1;
.ul => {
if (state.list_depth < state.list_stack.len) {
state.list_stack[state.list_depth] = .{ .type = .unordered, .index = 0 };
state.list_depth += 1;
}
},
.ol => {
if (state.list_depth < state.list_stack.len) {
state.list_stack[state.list_depth] = .{ .type = .ordered, .index = 1 };
state.list_depth += 1;
}
},
.li => {
const indent = if (state.list_depth > 0) state.list_depth - 1 else 0;
try writeIndentation(indent, writer);
try writer.writeAll("- ");
if (state.list_depth > 0) {
const current_list = &state.list_stack[state.list_depth - 1];
if (current_list.type == .ordered) {
try writer.print("{d}. ", .{current_list.index});
current_list.index += 1;
} else {
try writer.writeAll("- ");
}
} else {
try writer.writeAll("- ");
}
state.last_char_was_newline = false;
},
.blockquote => {
@@ -418,7 +445,7 @@ test "markdown: strikethrough" {
try s.asNode().setTextContent("deleted", page);
_ = try div.asNode().appendChild(s.asNode(), page);
var aw = std.Io.Writer.Allocating.init(testing.allocator);
var aw: std.Io.Writer.Allocating = .init(testing.allocator);
defer aw.deinit();
try dump(div.asNode(), .{}, &aw.writer, page);
@@ -442,9 +469,35 @@ test "markdown: task list" {
try input2.setAttributeSafe(comptime .wrap("type"), .wrap("checkbox"), page);
_ = try div.asNode().appendChild(input2.asNode(), page);
var aw = std.Io.Writer.Allocating.init(testing.allocator);
var aw: std.Io.Writer.Allocating = .init(testing.allocator);
defer aw.deinit();
try dump(div.asNode(), .{}, &aw.writer, page);
try testing.expectString("[x] [ ] \n", aw.written());
}
test "markdown: ordered list" {
const testing = @import("../testing.zig");
const page = try testing.test_session.createPage();
defer testing.test_session.removePage();
const doc = page.window._document;
const div = try doc.createElement("div", null, page);
const ol = try doc.createElement("ol", null, page);
_ = try div.asNode().appendChild(ol.asNode(), page);
const li1 = try doc.createElement("li", null, page);
try li1.asNode().setTextContent("First", page);
_ = try ol.asNode().appendChild(li1.asNode(), page);
const li2 = try doc.createElement("li", null, page);
try li2.asNode().setTextContent("Second", page);
_ = try ol.asNode().appendChild(li2.asNode(), page);
var aw: std.Io.Writer.Allocating = .init(testing.allocator);
defer aw.deinit();
try dump(div.asNode(), .{}, &aw.writer, page);
try testing.expectString("1. First\n2. Second\n", aw.written());
}