Add 'git-obs pr show-patch' command

osc/commands_git/pr_show_patch.py

@@ -0,0 +1,27 @@
+import osc.commandline_git
+
+
+class PullRequestShowPatchCommand(osc.commandline_git.GitObsCommand):
+    """
+    Show patch associated to the specified pull request
+    """
+
+    name = "show-patch"
+    parent = "PullRequestCommand"
+
+    def init_arguments(self):
+        from osc.commandline_git import complete_pr
+
+        self.add_argument_owner_repo_pull().completer = complete_pr
+
+    def run(self, args):
+        from osc import gitea_api
+        from osc.core import highlight_diff
+        from osc.output import tty
+
+        self.print_gitea_settings()
+
+        owner, repo, pull = args.owner_repo_pull
+        patch = gitea_api.PullRequest.get_patch(self.gitea_conn, owner, repo, pull)
+        patch = highlight_diff(patch)
+        print(patch.decode("utf-8"))