rustdoc: add hash to filename of toolchain files

All static files used by rustdoc are now stored in static.files/ and
include a hash of their contents. They no longer include the contents of
the --resource-suffix flag. This clarifies caching semantics. Anything
in static.files can use Cache-Control: immutable because any updates
will show up as a new URL.

Invocation-specific files like crates-NN.js, search-index-NN.js,
and sidebar-items-NN.js still get the resource suffix.

The --disable-minification flag is removed because it would vary the
output of static files based on invocation flags. Instead, for
rustdoc development purposes it's preferable to symlink static files
to a non-minified copy for quick iteration.

1 files changed, 5 insertions, 2 deletions

diff --git a/src/tools/rustdoc-js/tester.js b/src/tools/rustdoc-js/tester.js
index df3185758bf..3da4fed33e1 100644
--- a/src/tools/rustdoc-js/tester.js
+++ b/src/tools/rustdoc-js/tester.js
@@ -307,10 +307,13 @@ function runChecks(testFile, doSearch, parseQuery) {
  *   `parseQuery` function exported from the search module.
  */
 function loadSearchJS(doc_folder, resource_suffix) {
-    const searchJs = path.join(doc_folder, "search" + resource_suffix + ".js");
     const searchIndexJs = path.join(doc_folder, "search-index" + resource_suffix + ".js");
     const searchIndex = require(searchIndexJs);
-    const searchModule = require(searchJs);
+
+    const staticFiles = path.join(doc_folder, "static.files");
+    const searchJs = fs.readdirSync(staticFiles).find(
+        f => f.match(/search.*\.js$/));
+    const searchModule = require(path.join(staticFiles, searchJs));
     const searchWords = searchModule.initSearch(searchIndex.searchIndex);
 
     return {