From df7db1301e3a820aeadf0c9af1f956389a3bd5b1 Mon Sep 17 00:00:00 2001
From: Yuchen Pei <id@ypei.org>
Date: Sat, 12 Aug 2023 10:24:17 +1000
Subject: Moving some github related functions to my-github

also some minor changes in ycp-org and my-buffer
---
 emacs/.emacs.d/lisp/my/my-github.el | 67 +++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

(limited to 'emacs/.emacs.d/lisp/my/my-github.el')

diff --git a/emacs/.emacs.d/lisp/my/my-github.el b/emacs/.emacs.d/lisp/my/my-github.el
index 7dc2248..2fe90fd 100644
--- a/emacs/.emacs.d/lisp/my/my-github.el
+++ b/emacs/.emacs.d/lisp/my/my-github.el
@@ -64,5 +64,72 @@ License; name; description; homepage; created at"
     (my-delete-http-header)
     (alist-get 'name (json-read))))
 
+;;; urls with github
+;; TODO: generalise the following to common forges, including
+;; savannah, cgit, gitlab etc.
+(defun my-github-revision-url (file revision)
+  "Returns the github url of the upstream repo containing FILE at REVISION."
+  (let ((repo-url (vc-git-repository-url file))
+        (revision (or revision (vc-working-revision default-directory))))
+    (format "%s/commit/%s" repo-url revision)))
+
+(defun my-github-kill-revision-url (revision)
+  "Kill the github revision url for REVISION."
+  (kill-new (my-github-revision-url revision)))
+
+(defun my-github-file-loc-url (file-loc &optional revision)
+  "Convert a file location to a github url."
+  (pcase-let* ((`(,file ,line-no) (split-string file-loc ":"))
+               (revision (or revision (vc-working-revision file))))
+    (my-github-file-loc-url-internal file line-no revision)))
+
+(defun my-github-file-loc-url-internal (file line-no revision)
+  "Convert a FILE location at LINE-NO to a github url.
+
+REVISION is the commit hash."
+  (let* ((repo-url (vc-git-repository-url file))
+         (repo-root (vc-git-root file))
+         (path (file-relative-name file repo-root)))
+    (format "%s/blob/%s/%s#L%s" repo-url revision path line-no)))
+
+(defun my-github-kill-current-file-loc-url ()
+  "Kill the github url from where the point is at."
+  (interactive)
+  (kill-new (my-github-file-loc-url-internal
+             (buffer-file-name)
+             (1+ (current-line))
+             (vc-working-revision (buffer-file-name)))))
+
+(defun my-org-backtrace-to-github (bt &optional revision)
+  (string-join
+   (mapcar
+    (lambda (link)
+      (string-match "\\[\\[\\(.*\\)\\]\\[\\(.*\\)\\]\\]" link)
+      (let ((target (match-string 1 link))
+            (label (match-string 2 link)))
+        (format "[[%s][%s]]"
+                (my-github-file-loc-url target revision)
+                label)))
+    (split-string bt " > "))
+   " > "))
+
+(defun my-org-backtrace-to-github-region (beg end)
+  (interactive "r")
+  (kill-new
+   (my-org-backtrace-to-github (buffer-substring-no-properties beg end))))
+
+(defun my-org-backtrace-to-github-slack (beg end)
+  (interactive "r")
+  (let ((bt (buffer-substring-no-properties beg end))
+        (revision (when current-prefix-arg
+                    (read-string "Rrevision: ")))
+        )
+    (with-temp-buffer
+      (insert "#+options: ^:nil
+")
+      (goto-char (point-max))
+      (insert (my-org-backtrace-to-github bt revision))
+      (org-md-export-as-markdown))))
+
 (provide 'my-github)
 ;;; my-github.el ends here
-- 
cgit v1.2.3