# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 1618391754 -7200
# Node ID 1998a8311c4873d2e3ee6290f903ee0e680ca82e
# Parent  ae4c0f279282cc8838555fef56eaf615df2f6b3b
urlutil: add a new `get_unique_pull_path`

This function is dedicated to call that needs a single destination. Currently most caller actually need that since few actually support multiple destinations (the most importants `hg push` and `hg outgoing` do). So having a clear API point for that will be important when the time comes to have a single `[paths]` alias resolving to multiple urls.

Differential Revision: https://phab.mercurial-scm.org/D10403

diff -r ae4c0f279282 -r 1998a8311c48 mercurial/utils/urlutil.py
--- a/mercurial/utils/urlutil.py	Wed Apr 14 10:51:31 2021 +0200
+++ b/mercurial/utils/urlutil.py	Wed Apr 14 11:15:54 2021 +0200
@@ -471,6 +471,22 @@
         yield parseurl(url, default_branches)
 
 
+def get_unique_pull_path(action, repo, ui, source=None, default_branches=()):
+    """return a unique `(path, branch)` or abort if multiple are found
+
+    This is useful for command and action that does not support multiple
+    destination (yet).
+
+    Note that for now, we cannot get multiple destination so this function is "trivial".
+
+    The `action` parameter will be used for the error message.
+    """
+    if source is None:
+        source = b'default'
+    url = ui.expandpath(source)
+    return parseurl(url, default_branches)
+
+
 def get_clone_path(ui, source, default_branches=()):
     """return the `(origsource, path, branch)` selected as clone source"""
     url = ui.expandpath(source)