From: Elijah Newren <newren@xxxxxxxxx>
When a directory/file conflict remains, we can leave the directory where
it is, but need to move the information about the file to a different
pathname. After moving the file to a different pathname, we allow
subsequent process_entry() logic to handle any additional details that
might be relevant.
This depends on a new helper function, unique_path(), that dies with an
unimplemented error currently but will be implemented in a subsequent
commit.
Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
merge-ort.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 84 insertions(+), 2 deletions(-)
diff --git a/merge-ort.c b/merge-ort.c
index dd90987ae3d..d300a02810e 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -343,6 +343,13 @@ static void path_msg(struct merge_options *opt,
strbuf_addch(sb, '\n');
}
+static char *unique_path(struct strmap *existing_paths,
+ const char *path,
+ const char *branch)
+{
+ die("Not yet implemented.");
+}
+
/*** Function Grouping: functions related to collect_merge_info() ***/
static void setup_path_info(struct merge_options *opt,
@@ -962,6 +969,8 @@ static void process_entry(struct merge_options *opt,
struct conflict_info *ci,
struct directory_versions *dir_metadata)
{
+ int df_file_index = 0;
+
VERIFY_CI(ci);
assert(ci->filemask >= 0 && ci->filemask <= 7);
/* ci->match_mask == 7 was handled in collect_merge_info_callback() */
@@ -998,13 +1007,86 @@ static void process_entry(struct merge_options *opt,
oidcpy(&ci->stages[i].oid, &null_oid);
}
} else if (ci->df_conflict && ci->merged.result.mode != 0) {
- die("Not yet implemented.");
+ /*
+ * This started out as a D/F conflict, and the entries in
+ * the competing directory were not removed by the merge as
+ * evidenced by write_completed_directory() writing a value
+ * to ci->merged.result.mode.
+ */
+ struct conflict_info *new_ci;
+ const char *branch;
+ const char *old_path = path;
+ int i;
+
+ assert(ci->merged.result.mode == S_IFDIR);
+
+ /*
+ * If filemask is 1, we can just ignore the file as having
+ * been deleted on both sides. We do not want to overwrite
+ * ci->merged.result, since it stores the tree for all the
+ * files under it.
+ */
+ if (ci->filemask == 1) {
+ ci->filemask = 0;
+ return;
+ }
+
+ /*
+ * This file still exists on at least one side, and we want
+ * the directory to remain here, so we need to move this
+ * path to some new location.
+ */
+ new_ci = xcalloc(1, sizeof(*new_ci));
+ /* We don't really want new_ci->merged.result copied, but it'll
+ * be overwritten below so it doesn't matter. We also don't
+ * want any directory mode/oid values copied, but we'll zero
+ * those out immediately. We do want the rest of ci copied.
+ */
+ memcpy(new_ci, ci, sizeof(*ci));
+ new_ci->match_mask = (new_ci->match_mask & ~new_ci->dirmask);
+ new_ci->dirmask = 0;
+ for (i = MERGE_BASE; i <= MERGE_SIDE2; i++) {
+ if (new_ci->filemask & (1 << i))
+ continue;
+ /* zero out any entries related to directories */
+ new_ci->stages[i].mode = 0;
+ oidcpy(&new_ci->stages[i].oid, &null_oid);
+ }
+
+ /*
+ * Find out which side this file came from; note that we
+ * cannot just use ci->filemask, because renames could cause
+ * the filemask to go back to 7. So we use dirmask, then
+ * pick the opposite side's index.
+ */
+ df_file_index = (ci->dirmask & (1 << 1)) ? 2 : 1;
+ branch = (df_file_index == 1) ? opt->branch1 : opt->branch2;
+ path = unique_path(&opt->priv->paths, path, branch);
+ strmap_put(&opt->priv->paths, path, new_ci);
+
+ path_msg(opt, path, 0,
+ _("CONFLICT (file/directory): directory in the way "
+ "of %s from %s; moving it to %s instead."),
+ old_path, branch, path);
+
+ /*
+ * Zero out the filemask for the old ci. At this point, ci
+ * was just an entry for a directory, so we don't need to
+ * do anything more with it.
+ */
+ ci->filemask = 0;
+
+ /*
+ * Now note that we're working on the new entry (path was
+ * updated above.
+ */
+ ci = new_ci;
}
/*
* NOTE: Below there is a long switch-like if-elseif-elseif... block
* which the code goes through even for the df_conflict cases
- * above. Well, it will once we don't die-not-implemented above.
+ * above.
*/
if (ci->match_mask) {
ci->merged.clean = 1;
--
gitgitgadget
