initial ocommit

2 files changed, 224 insertions, 0 deletions

diff --git a/lib/default.nix b/lib/default.nix
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index 0000000..2e3127d
--- /dev/null
+++ b/lib/default.nix
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+{ lib }:
+
+{
+  pp.html = import ./html.nix { inherit lib; };
+}
diff --git a/lib/html.nix b/lib/html.nix
new file mode 100644
index 0000000..aa1c839
--- /dev/null
+++ b/lib/html.nix
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+{ lib, ... }:
+
+let
+  comment = content: "<!-- ${content} -->";
+  lines = lib.concatStringsSep "\n";
+  sortByPath = cmp: keys:
+    lib.sort
+    (x: y: cmp (lib.getAttrFromPath keys x) (lib.getAttrFromPath keys y));
+  sortByKey = cmp: key: sortByPath cmp [ key ];
+  for = iterable: f:
+    if lib.isList iterable then
+      builtins.map f iterable
+    else
+      lib.mapAttrsToList f iterable;
+
+  setAttr = attr: value: ''${attr}="${value}"'';
+  tagWithAttrs = tag: attrs:
+    "<${tag}${
+      lib.concatMapStrings (x: " ${x}") (lib.mapAttrsToList setAttr attrs)
+    }>";
+  lineOrLines = f: content:
+    if lib.isList content then f (lines content) else f content;
+  tryOverride = f: arg:
+    if lib.isAttrs arg then
+      tryOverride (attrs: content: f (arg // attrs) content)
+    else
+      f { } arg;
+  container = tag:
+    tryOverride (attrs:
+      lineOrLines (content: "${tagWithAttrs tag attrs}${content}</${tag}>"));
+
+  empty = tagWithAttrs;
+
+  tagsContainer = [
+    # Main root
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#main_root
+    "html"
+    # Document metadata
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#document_metadata
+    "head"
+    "style"
+    "title"
+    # Sectioning root
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#sectioning_root
+    "body"
+    # Content sectioning
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#content_sectioning
+    "address"
+    "article"
+    "aside"
+    "footer"
+    "header"
+    "h1"
+    "h2"
+    "h3"
+    "h4"
+    "h5"
+    "h6"
+    "main"
+    "nav"
+    "section"
+    # Text content
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#text_content
+    "blockquote"
+    "dd"
+    "div"
+    "dl"
+    "dt"
+    "figcaption"
+    "figure"
+    "li"
+    "menu"
+    "ol"
+    "p"
+    "pre"
+    "ul"
+    # Inline text semantics
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#inline_text_semantics
+    "a"
+    "abbr"
+    "b"
+    "bdi"
+    "bdo"
+    "cite"
+    "code"
+    "data"
+    "dfn"
+    "em"
+    "i"
+    "kbd"
+    "mark"
+    "q"
+    "rp"
+    "rt"
+    "ruby"
+    "s"
+    "samp"
+    "small"
+    "span"
+    "strong"
+    "sub"
+    "time"
+    "u"
+    "var"
+    # Image and multimedia
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#image_and_multimedia
+    "audio"
+    "map"
+    "track"
+    "video"
+    # Embedded content
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#embedded_content
+    "iframe"
+    "object"
+    "picture"
+    "portal"
+    "source"
+    # SVG and MathML
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#svg_and_mathml
+    "svg"
+    "math"
+    # Scripting
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#scripting
+    "canvas"
+    "noscript"
+    "script"
+    # Demarcating edits
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#demarcating_edits
+    "del"
+    "ins"
+    # Table content
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#table_content
+    "caption"
+    "colgroup"
+    "table"
+    "tbody"
+    "td"
+    "tfoot"
+    "th"
+    "thead"
+    "tr"
+    # Forms
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#forms
+    "button"
+    "datalist"
+    "fieldset"
+    "form"
+    "label"
+    "legend"
+    "meter"
+    "optgroup"
+    "option"
+    "output"
+    "progress"
+    "select"
+    "textarea"
+    # Interactive elements
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#interactive_elements
+    "details"
+    "dialog"
+    "summary"
+    # Web components
+    # https://developer.mozilla.org/en-US/docs/Web/HTML/Element#web_components
+    "slot"
+    "template"
+  ];
+  tagsContainerFuns =
+    builtins.foldl' (module: tag: module // { "${tag}" = container tag; }) { }
+    tagsContainer;
+
+  tagsEmpty = [
+    "area"
+    "base"
+    "br"
+    "col"
+    "embed"
+    "hr"
+    "img"
+    "input"
+    "keygen"
+    "link"
+    "meta"
+    "param"
+    "source"
+    "track"
+    "wbr"
+  ];
+  tagsEmptyFuns = builtins.foldl' (module: tag:
+    let tagWith = empty tag;
+    in module // {
+      "${tag}With" = tagWith;
+      "${tag}" = tagWith { };
+    }) { } tagsEmpty;
+
+  file = path: "/static/files/${path}";
+  href = tryOverride (attrs: url: content:
+    tagsContainerFuns.a ({ href = url; } // attrs) content);
+  icon =
+    tryOverride (attrs: id: tagsContainerFuns.i (attrs // { class = id; }) "");
+  mailto = tryOverride (attrs: address: href attrs "mailto:${address}" address);
+  timerange = start: end:
+    "${tagsContainerFuns.time { date = start; } start} - ${
+      tagsContainerFuns.time { date = end; } end
+    }";
+in tagsContainerFuns // tagsEmptyFuns // {
+  inherit for comment container empty file href icon lines mailto timerange;
+} // {
+  sort = let
+    lt = x: y: x < y;
+    gt = x: y: x > y;
+  in {
+    byKey = sortByKey lt;
+    byPath = sortByPath lt;
+    reverse = {
+      byKey = sortByKey gt;
+      byPath = sortByPath gt;
+    };
+  };
+}