/* For the Racket manual style */
AddOnLoad(function() {
/* Look for header elements that have x-source-module and x-part tag.
For those elements, add a hidden element that explains how to
link to the section, and set the element's onclick() to display
the explanation. */
var tag_names = ["h1", "h2", "h3", "h4", "h5"];
for (var j = 0; j < tag_names.length; j++) {
elems = document.getElementsByTagName(tag_names[j]);
for (var i = 0; i < elems.length; i++) {
var elem = elems.item(i);
AddPartTitleOnClick(elem);
}
}
})
// cache of source urls
var cache = {};
function ParseSource(source, mod_path, single_collection) {
var source_url = new URL(source);
if (source_url.protocol == "github:") {
// browser URL parser only works with http(s) URLs
source_url = new URL("https" + source.substring(6));
var host = source_url.host;
var url_path = source_url.pathname.substring(1).split("/");
if (!(url_path.length >= 2)) return null;
var user = url_path.shift();
var repo = url_path.shift();
var branch = url_path.shift();
var source_path = url_path.join("/");
}
else if (("https:" == source_url.protocol) || ("git:" == source_url.protocol)) {
// browser URL parser only works with http(s) URLs
if ("git:" == source_url.protocol)
source_url = new URL("https" + source.substring(3));
var host = source_url.host;
var source_path = source_url.searchParams.get("path");
var branch = (source_url.hash || "#master").substring(1);
var url_path = source_url.pathname.substring(1).split("/");
if (url_path.length < 2) throw [source_url.pathname, url_path];
var user = url_path.shift();
var repo = url_path.shift();
var mtch = repo.match(/(.*)\.git$/);
if (mtch) repo = mtch[1];
}
else return null;
var mod_path_re = /^\(lib "(.+)"\)$/;
var mod_path_elems = mod_path && mod_path.match(mod_path_re)[1].split("/");
if (!user || !repo || !mod_path_elems)
return null;
if (single_collection)
mod_path_elems.shift();
var file_path = mod_path_elems.join("/");
if (source_path) {
file_path = source_path + "/" + file_path;
}
return { user: user,
repo: repo,
file_path: file_path,
branch: branch,
host: host };
}
function AddSourceElement(pkg_url, info) {
info.appendChild(document.createTextNode("Document source "));
var url_line = document.createElement("div");
var a = document.createElement("a");
a.href = pkg_url;
a.style.whiteSpace = "nowrap";
a.appendChild(document.createTextNode(pkg_url));
addSpan(url_line, "\xA0", "RktRdr");
url_line.appendChild(a);
info.appendChild(url_line);
}
var prefixes = { "github.com": "tree",
"gitlab.com": "-/blob" };
function AddSourceUrl(source, mod_path, collection, info) {
// multi is encoded as an array, empty as false
single_collection = (typeof collection === "string");
var parsed = source && mod_path && ParseSource(source, mod_path, single_collection);
if (!parsed) return;
prefix = prefixes.hasOwnProperty(parsed.host) && prefixes[parsed.host];
if (!prefix) return;
var correct_url = "https://" + [parsed.host, parsed.user, parsed.repo, prefix, parsed.branch, parsed.file_path].join("/");
if (info) AddSourceElement(correct_url, info);
}
function addSpan(dest, str, cn) {
var s = document.createElement("span");
s.className = cn;
s.style.whiteSpace = "nowrap";
s.appendChild(document.createTextNode(str));
dest.appendChild(s);
}
// test cases
if (false) {
console.log(ParseSource("git://gitlab.com/benn/foo?path=xxx",
'(lib "asn1/scribblings/asn1.scrbl")',
false))
console.log(ParseSource("github://github.com/carl-eastlund/mischief/master",
'(lib "asn1/scribblings/asn1.scrbl")',
false))
console.log(ParseSource("github://github.com/carl-eastlund/mischief/stable/dir",
'(lib "asn1/scribblings/asn1.scrbl")',
false))
console.log(ParseSource("git://github.com/racket/racket/?path=pkgs/racket-doc",
'(lib "asn1/scribblings/asn1.scrbl")',
false));
console.log(ParseSource("git://github.com/rmculpepper/asn1.git?path=asn1-doc",
'(lib "asn1/scribblings/asn1.scrbl")',
true));
console.log(ParseSource("git://github.com/rmculpepper/asn1",
'(lib "asn1/scribblings/asn1.scrbl")',
true));
console.log(ParseSource("git://github.com/rmculpepper/asn1",
'(lib "asn1/scribblings/asn1.scrbl")',
false));
}
function AddPartTitleOnClick(elem) {
var mod_path = elem.getAttribute("x-source-module");
var tag = elem.getAttribute("x-part-tag");
var source_pkg = elem.getAttribute("x-source-pkg");
// create here to share
var info = document.createElement("div");
// tag is not needed, but this way we can add the element in only one place
// avoid failing on browser that don't have `fetch`
if (mod_path && source_pkg && tag && window.fetch) {
var cached = cache[mod_path]
if (cached) {
AddSourceElement(cached[0], mod_path, cached[1], info);
}
else {
fetch("https://pkgs.racket-lang.org/pkg/" + source_pkg + ".json")
.then(function (response) { return response.json(); })
.then(function (data) {
var vers = data["versions"] || {};
var def = vers["default"] || {};
var source = def["source"] || undefined;
var collection = data["collection"];
if (source) {
cache[mod_path] = [source, collection];
AddSourceUrl(source, mod_path, collection, info);
}
});
}
}
if (mod_path && tag) {
// Might not be present:
var prefixes = elem.getAttribute("x-part-prefixes");
info.className = "RPartExplain";
/* The "top" tag refers to a whole document: */
var is_top = (tag == "\"top\"");
info.appendChild(document.createTextNode("Link to this "
+ (is_top ? "document" : "section")
+ " with "));
/* Break `secref` into two lines if the module path and tag
are long enough: */
var is_long = (is_top ? false : ((mod_path.length
+ tag.length
+ (prefixes ? (16 + prefixes.length) : 0))
> 60));
var line1 = document.createElement("div");
var line1x = ((is_long && prefixes) ? document.createElement("div") : line1);
var line2 = (is_long ? document.createElement("div") : line1);
/* Construct a `secref` call with suitable syntax coloring: */
addSpan(line1, "\xA0@", "RktRdr");
addSpan(line1, (is_top ? "other-doc" : "secref"), "RktSym");
addSpan(line1, "[", "RktPn");
if (!is_top)
addSpan(line1, tag, "RktVal");
if (is_long) {
/* indent additional lines: */
if (prefixes)
addSpan(line1x, "\xA0\xA0\xA0\xA0\xA0\xA0\xA0\xA0", "RktPn");
addSpan(line2, "\xA0\xA0\xA0\xA0\xA0\xA0\xA0\xA0", "RktPn");
}
if (prefixes) {
addSpan(line1x, " #:tag-prefixes ", "RktPn");
addSpan(line1x, "'", "RktVal");
addSpan(line1x, prefixes, "RktVal");
}
if (!is_top)
addSpan(line2, " #:doc ", "RktPn");
addSpan(line2, "'", "RktVal");
addSpan(line2, mod_path, "RktVal");
addSpan(line2, "]", "RktPn");
info.appendChild(line1);
if (is_long)
info.appendChild(line1x);
if (is_long)
info.appendChild(line2);
info.style.display = "none";
/* Add the new element afterthe header: */
var n = elem.nextSibling;
if (n)
elem.parentNode.insertBefore(info, n);
else
elem.parentNode.appendChild(info);
/* Clicking the information button shows the explanation element: */
const heading = elem.querySelector('.heading-source');
if (heading) {
heading.onclick = function () {
if (info.style.display === "none")
info.style.display = "block";
else
info.style.display = "none";
}
}
}
}