Beautiful Elixir DSL for building XML documents.

XM turns Elixir syntax into Saxy simple-form XML nodes, then delegates escaping and encoding to Saxy. It is useful for feeds, sitemaps, service integrations, and any code that needs XML without string concatenation.

Supported syntax

• local calls become XML elements: url do ... end, loc "..."
• keyword arguments become attributes: link href: "/feed.xml", rel: "self"
• tag/2 builds dynamic or namespaced names that are awkward as atoms
• qname/2 builds qualified names such as "media:thumbnail"
• xmlns/1 and xmlns/2 build namespace declaration attributes
• schema do ... end declares root namespaces and XSD locations
• dotted namespace calls such as media.thumbnail work for declared prefixes
• XM.validate!/2 validates XML against declared or explicit XSD files
• config :xm, validate: true validates every document do ... end
• for, if, unless, and case work inside XML blocks
• text/1, comment/1, and cdata/1 create explicit XML node kinds
• remote calls, variables, operators, and normal expressions remain Elixir

Examples

import XM

document do
  urlset xmlns: "http://www.sitemaps.org/schemas/sitemap/0.9" do
    url do
      loc "https://example.com/"
      lastmod Date.utc_today()
    end
  end
end

tree do
  tag qname(:media, :thumbnail), [xmlns(:media, "https://example.com/media"), url: image_url]
end

document/2 requires exactly one root element and returns a binary. Use tree/1 with render_iodata/2 when you want iodata, or when building fragments to embed in a larger document.