The data structure used to store this list is a string_list
of sources with the destination in the util member. The
current code just sorts on the source; if a single source is
pushed to two different destination refs at a remote, then
the order in which they are printed is non-deterministic.
This patch implements a comparison using both fields.
Besides being a little nicer on the eyes, giving a stable
sort prevents false negatives in the test suite when
comparing output.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
The discussion of the proper interface to the one-line wrapper to qsort
didn't really resolve anything. It seems that the constraints of C make
a nice wrapper a little painful, so let's just use a bare qsort. Once
again, I really don't care what it looks like, so feel free to mark it
up if you prefer differently; I just want it off my todo list, and to
let JSixt run his tests in peace.
I did have one somewhat sick thought for an API: have string_list's
cmp_items (or an alternate cmp_items_with_util) treat a non-NULL util
member as a pointer to a string, and use it as a secondary key in the
sort. It works here because the first member of the push_info struct is
the secondary key. But I think it is a bit too subtle for my taste.
builtin-remote.c | 17 ++++++++++++++++-
1 files changed, 16 insertions(+), 1 deletions(-)
diff --git a/builtin-remote.c b/builtin-remote.c
index 993acd6..9ef846f 100644
--- a/builtin-remote.c
+++ b/builtin-remote.c
@@ -922,6 +922,20 @@ int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
return 0;
}
+/*
+ * Sorting comparison for a string list that has push_info
+ * structs in its util field
+ */
+static int cmp_string_with_push(const void *va, const void *vb)
+{
+ const struct string_list_item *a = va;
+ const struct string_list_item *b = vb;
+ const struct push_info *a_push = a->util;
+ const struct push_info *b_push = b->util;
+ int cmp = strcmp(a->string, b->string);
+ return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
+}
+
int show_push_info_item(struct string_list_item *item, void *cb_data)
{
struct show_info *show_info = cb_data;
@@ -1032,7 +1046,8 @@ static int show(int argc, const char **argv)
info.width = info.width2 = 0;
for_each_string_list(add_push_to_show_info, &states.push, &info);
- sort_string_list(info.list);
+ qsort(info.list->items, info.list->nr,
+ sizeof(*info.list->items), cmp_string_with_push);
if (info.list->nr)
printf(" Local ref%s configured for 'git push'%s:\n",
info.list->nr > 1 ? "s" : "",
--
1.6.2.1.276.gd47fa
--
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