From: "Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>,
Elijah Newren <newren@gmail.com>,
Elijah Newren <newren@gmail.com>
Subject: [PATCH v2 05/17] merge-ort: add outline of get_provisional_directory_renames()
Date: Thu, 07 Jan 2021 21:35:53 +0000 [thread overview]
Message-ID: <bb4285250cdef2fcd16a22f8540968c871302c9f.1610055365.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.835.v2.git.1610055365.gitgitgadget@gmail.com>
From: Elijah Newren <newren@gmail.com>
This function is based on merge-recursive.c's get_directory_renames(),
except that the first half has been split out into a not-yet-implemented
compute_rename_counts(). The primary difference here is our lack of the
non_unique_new_dir boolean in our strmap. The lack of that field will
at first cause us to fail testcase 2b of t6423; however, future
optimizations will obviate the need for that ugly field so we have just
left it out.
Signed-off-by: Elijah Newren <newren@gmail.com>
---
merge-ort.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 59 insertions(+), 1 deletion(-)
diff --git a/merge-ort.c b/merge-ort.c
index 378ac495d09..73d3ff97f52 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -721,11 +721,69 @@ static int handle_content_merge(struct merge_options *opt,
/*** Function Grouping: functions related to directory rename detection ***/
+static void compute_rename_counts(struct diff_queue_struct *pairs,
+ struct strmap *dir_rename_count,
+ struct strset *dirs_removed)
+{
+ die("Not yet implemented!");
+}
+
static void get_provisional_directory_renames(struct merge_options *opt,
unsigned side,
int *clean)
{
- die("Not yet implemented!");
+ struct hashmap_iter iter;
+ struct strmap_entry *entry;
+ struct rename_info *renames = &opt->priv->renames;
+
+ compute_rename_counts(&renames->pairs[side],
+ &renames->dir_rename_count[side],
+ &renames->dirs_removed[side]);
+ /*
+ * Collapse
+ * dir_rename_count: old_directory -> {new_directory -> count}
+ * down to
+ * dir_renames: old_directory -> best_new_directory
+ * where best_new_directory is the one with the unique highest count.
+ */
+ strmap_for_each_entry(&renames->dir_rename_count[side], &iter, entry) {
+ const char *source_dir = entry->key;
+ struct strintmap *counts = entry->value;
+ struct hashmap_iter count_iter;
+ struct strmap_entry *count_entry;
+ int max = 0;
+ int bad_max = 0;
+ const char *best = NULL;
+
+ strintmap_for_each_entry(counts, &count_iter, count_entry) {
+ const char *target_dir = count_entry->key;
+ intptr_t count = (intptr_t)count_entry->value;
+
+ if (count == max)
+ bad_max = max;
+ else if (count > max) {
+ max = count;
+ best = target_dir;
+ }
+ }
+
+ if (max == 0)
+ continue;
+
+ if (bad_max == max) {
+ path_msg(opt, source_dir, 0,
+ _("CONFLICT (directory rename split): "
+ "Unclear where to rename %s to; it was "
+ "renamed to multiple other directories, with "
+ "no destination getting a majority of the "
+ "files."),
+ source_dir);
+ *clean &= 0;
+ } else {
+ strmap_put(&renames->dir_renames[side],
+ source_dir, (void*)best);
+ }
+ }
}
static void handle_directory_level_conflicts(struct merge_options *opt)
--
gitgitgadget
next prev parent reply other threads:[~2021-01-07 21:38 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-07 20:01 [PATCH 00/18] Add directory rename detection to merge-ort Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 01/18] merge-ort: add new data structures for directory rename detection Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 02/18] merge-ort: initialize and free new directory rename data structures Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 03/18] merge-ort: collect which directories are removed in dirs_removed Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 04/18] merge-ort: add outline for computing directory renames Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 05/18] merge-ort: add outline of get_provisional_directory_renames() Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 06/18] merge-ort: copy get_renamed_dir_portion() from merge-recursive.c Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 07/18] merge-ort: implement compute_rename_counts() Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 08/18] merge-ort: implement handle_directory_level_conflicts() Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 09/18] merge-ort: modify collect_renames() for directory rename handling Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 10/18] merge-ort: implement compute_collisions() Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 11/18] merge-ort: implement apply_dir_rename() and check_dir_renamed() Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 12/18] merge-ort: implement check_for_directory_rename() Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 13/18] merge-ort: implement handle_path_level_conflicts() Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 14/18] merge-ort: add a new toplevel_dir field Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 15/18] merge-ort: implement apply_directory_rename_modifications() Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 16/18] merge-ort: process_renames() now needs more defensiveness Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 17/18] merge-ort: fix a directory rename detection bug Elijah Newren via GitGitGadget
2021-01-07 20:01 ` [PATCH 18/18] DO NOT SUBMIT: directory rename stuff for redo_after_renames Elijah Newren via GitGitGadget
2021-01-07 20:02 ` Elijah Newren
2021-01-07 21:35 ` [PATCH v2 00/17] Add directory rename detection to merge-ort Elijah Newren via GitGitGadget
2021-01-07 21:35 ` [PATCH v2 01/17] merge-ort: add new data structures for directory rename detection Elijah Newren via GitGitGadget
2021-01-07 21:35 ` [PATCH v2 02/17] merge-ort: initialize and free new directory rename data structures Elijah Newren via GitGitGadget
2021-01-07 21:35 ` [PATCH v2 03/17] merge-ort: collect which directories are removed in dirs_removed Elijah Newren via GitGitGadget
2021-01-07 21:35 ` [PATCH v2 04/17] merge-ort: add outline for computing directory renames Elijah Newren via GitGitGadget
2021-01-18 19:54 ` Taylor Blau
2021-01-18 20:15 ` Elijah Newren
2021-01-18 20:28 ` Taylor Blau
2021-01-07 21:35 ` Elijah Newren via GitGitGadget [this message]
2021-01-18 20:10 ` [PATCH v2 05/17] merge-ort: add outline of get_provisional_directory_renames() Taylor Blau
2021-01-18 20:34 ` Elijah Newren
2021-01-07 21:35 ` [PATCH v2 06/17] merge-ort: copy get_renamed_dir_portion() from merge-recursive.c Elijah Newren via GitGitGadget
2021-01-07 21:35 ` [PATCH v2 07/17] merge-ort: implement compute_rename_counts() Elijah Newren via GitGitGadget
2021-01-18 20:36 ` Taylor Blau
2021-01-18 20:41 ` Elijah Newren
2021-01-07 21:35 ` [PATCH v2 08/17] merge-ort: implement handle_directory_level_conflicts() Elijah Newren via GitGitGadget
2021-01-18 21:00 ` Taylor Blau
2021-01-18 21:36 ` Elijah Newren
2021-01-07 21:35 ` [PATCH v2 09/17] merge-ort: modify collect_renames() for directory rename handling Elijah Newren via GitGitGadget
2021-01-07 21:35 ` [PATCH v2 10/17] merge-ort: implement compute_collisions() Elijah Newren via GitGitGadget
2021-01-07 21:35 ` [PATCH v2 11/17] merge-ort: implement apply_dir_rename() and check_dir_renamed() Elijah Newren via GitGitGadget
2021-01-07 21:36 ` [PATCH v2 12/17] merge-ort: implement check_for_directory_rename() Elijah Newren via GitGitGadget
2021-01-07 21:36 ` [PATCH v2 13/17] merge-ort: implement handle_path_level_conflicts() Elijah Newren via GitGitGadget
2021-01-07 21:36 ` [PATCH v2 14/17] merge-ort: add a new toplevel_dir field Elijah Newren via GitGitGadget
2021-01-07 21:36 ` [PATCH v2 15/17] merge-ort: implement apply_directory_rename_modifications() Elijah Newren via GitGitGadget
2021-01-07 21:36 ` [PATCH v2 16/17] merge-ort: process_renames() now needs more defensiveness Elijah Newren via GitGitGadget
2021-01-07 21:36 ` [PATCH v2 17/17] merge-ort: fix a directory rename detection bug Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 00/17] Add directory rename detection to merge-ort Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 01/17] merge-ort: add new data structures for directory rename detection Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 02/17] merge-ort: initialize and free new directory rename data structures Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 03/17] merge-ort: collect which directories are removed in dirs_removed Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 04/17] merge-ort: add outline for computing directory renames Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 05/17] merge-ort: add outline of get_provisional_directory_renames() Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 06/17] merge-ort: copy get_renamed_dir_portion() from merge-recursive.c Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 07/17] merge-ort: implement compute_rename_counts() Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 08/17] merge-ort: implement handle_directory_level_conflicts() Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 09/17] merge-ort: modify collect_renames() for directory rename handling Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 10/17] merge-ort: implement compute_collisions() Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 11/17] merge-ort: implement apply_dir_rename() and check_dir_renamed() Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 12/17] merge-ort: implement check_for_directory_rename() Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 13/17] merge-ort: implement handle_path_level_conflicts() Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 14/17] merge-ort: add a new toplevel_dir field Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 15/17] merge-ort: implement apply_directory_rename_modifications() Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 16/17] merge-ort: process_renames() now needs more defensiveness Elijah Newren via GitGitGadget
2021-01-19 19:53 ` [PATCH v3 17/17] merge-ort: fix a directory rename detection bug Elijah Newren via GitGitGadget
2021-01-19 22:48 ` [PATCH v3 00/17] Add directory rename detection to merge-ort Taylor Blau
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