tiny.markdown.parseBlockType

1pub fn parseType(line: []const u8) Parsed {2    const indent = markdownIndent(line);3    const trimmed = trimLeft(line, " \t");45    if (trimmed.len == 0) {6        return .{ .block_type = .paragraph, .content = "", .number = null, .indent = indent };7    }89    if (trimmed.len >= 3 and (std.mem.startsWith(u8, trimmed, "---") or std.mem.startsWith(u8, trimmed, "***") or std.mem.startsWith(u8, trimmed, "___"))) {10        var all_same = true;11        const first = trimmed[0];12        for (trimmed) |c| {13            if (c != first and c != ' ') {14                all_same = false;15                break;16            }17        }18        if (all_same) {19            return .{ .block_type = .horizontal_rule, .content = "", .number = null, .indent = indent };20        }21    }2223    if (std.mem.startsWith(u8, trimmed, "#### ")) {24        return .{ .block_type = .heading4, .content = trimmed[5..], .number = null, .indent = indent };25    }26    if (std.mem.startsWith(u8, trimmed, "### ")) {27        return .{ .block_type = .heading3, .content = trimmed[4..], .number = null, .indent = indent };28    }29    if (std.mem.startsWith(u8, trimmed, "## ")) {30        return .{ .block_type = .heading2, .content = trimmed[3..], .number = null, .indent = indent };31    }32    if (std.mem.startsWith(u8, trimmed, "# ")) {33        return .{ .block_type = .heading1, .content = trimmed[2..], .number = null, .indent = indent };34    }3536    if (std.mem.startsWith(u8, trimmed, "> ")) {37        return .{ .block_type = .blockquote, .content = trimmed[2..], .number = null, .indent = indent };38    }39    if (std.mem.startsWith(u8, trimmed, ">")) {40        return .{ .block_type = .blockquote, .content = trimmed[1..], .number = null, .indent = indent };41    }4243    if (trimmed.len >= 2 and (trimmed[0] == '-' or trimmed[0] == '*' or trimmed[0] == '+') and trimmed[1] == ' ') {44        return .{ .block_type = .bullet_list, .content = trimmed[2..], .number = null, .indent = indent };45    }4647    if (trimmed.len >= 3) {48        var num_end: usize = 0;49        while (num_end < trimmed.len and trimmed[num_end] >= '0' and trimmed[num_end] <= '9') {50            num_end += 1;51        }52        if (num_end > 0 and num_end < trimmed.len and trimmed[num_end] == '.' and num_end + 1 < trimmed.len and trimmed[num_end + 1] == ' ') {53            const num = std.fmt.parseInt(u16, trimmed[0..num_end], 10) catch 1;54            return .{ .block_type = .numbered_list, .content = trimmed[num_end + 2 ..], .number = num, .indent = indent };55        }56    }5758    if (std.mem.startsWith(u8, trimmed, "```")) {59        return .{ .block_type = .code_block, .content = trimmed[3..], .number = null, .indent = indent };60    }6162    return .{ .block_type = .paragraph, .content = trimmed, .number = null, .indent = indent };63}

1pub const parseBlockType = block.parseType;