1 files changed, 38 insertions, 0 deletions
diff --git a/.emacs.d/lang/java.el b/.emacs.d/lang/java.el
new file mode 100644
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+++ b/.emacs.d/lang/java.el
@@ -0,0 +1,38 @@
+;; Emacs Configuration for Java
+
+; JDT URI fix for JDTLS from https://www.reddit.com/r/emacs/comments/1ibkh2h/comment/m9slw00/
+(with-eval-after-load 'eglot
+  (add-to-list 'eglot-server-programs
+               `((java-mode java-ts-mode) .
+                 ("jdtls"
+                  :initializationOptions
+                  (:extendedClientCapabilities (:classFileContentsSupport t))))))
+
+(defun jdt-file-name-handler (operation &rest args)
+  "Support Eclipse jdtls `jdt://' uri scheme."
+  (let* ((uri (car args))
+         (cache-dir "/tmp/.eglot")
+         (source-file
+          (expand-file-name
+           (file-name-concat
+            cache-dir
+            (save-match-data
+              (when (string-match "jdt://contents/\\(.*?\\)/\\(.*\\)\.class\\?" uri)
+                (format "%s.java" (replace-regexp-in-string "/" "." (match-string 2 uri) t t))))))))
+    (unless (file-readable-p source-file)
+      (let ((content (jsonrpc-request (eglot-current-server) :java/classFileContents (list :uri uri)))
+            (metadata-file (format "%s.%s.metadata"
+                                   (file-name-directory source-file)
+                                   (file-name-base source-file))))
+        (unless (file-directory-p cache-dir) (make-directory cache-dir t))
+        (with-temp-file source-file (insert content))
+        (with-temp-file metadata-file (insert uri))))
+    source-file))
+(add-to-list 'file-name-handler-alist '("\\`jdt://" . jdt-file-name-handler))
+
+(add-hook 'java-mode-hook #'eglot-ensure t)
+
+(load-file
+   (expand-file-name
+    "pkg/consult-jdt.el"
+    user-emacs-directory))