enum rename_type {
RENAME_NORMAL = 0,
RENAME_DELETE,
- RENAME_ONE_FILE_TO_TWO
+ RENAME_ONE_FILE_TO_ONE,
+ RENAME_ONE_FILE_TO_TWO,
+ RENAME_TWO_FILES_TO_ONE
};
-struct rename_df_conflict_info {
+struct rename_conflict_info {
enum rename_type rename_type;
struct diff_filepair *pair1;
struct diff_filepair *pair2;
const char *branch2;
struct stage_data *dst_entry1;
struct stage_data *dst_entry2;
+ struct diff_filespec ren1_other;
+ struct diff_filespec ren2_other;
};
/*
unsigned mode;
unsigned char sha[20];
} stages[4];
- struct rename_df_conflict_info *rename_df_conflict_info;
+ struct rename_conflict_info *rename_conflict_info;
unsigned processed:1;
- unsigned involved_in_rename:1;
};
-static inline void setup_rename_df_conflict_info(enum rename_type rename_type,
- struct diff_filepair *pair1,
- struct diff_filepair *pair2,
- const char *branch1,
- const char *branch2,
- struct stage_data *dst_entry1,
- struct stage_data *dst_entry2)
+static inline void setup_rename_conflict_info(enum rename_type rename_type,
+ struct diff_filepair *pair1,
+ struct diff_filepair *pair2,
+ const char *branch1,
+ const char *branch2,
+ struct stage_data *dst_entry1,
+ struct stage_data *dst_entry2,
+ struct merge_options *o,
+ struct stage_data *src_entry1,
+ struct stage_data *src_entry2)
{
- struct rename_df_conflict_info *ci = xcalloc(1, sizeof(struct rename_df_conflict_info));
+ struct rename_conflict_info *ci = xcalloc(1, sizeof(struct rename_conflict_info));
ci->rename_type = rename_type;
ci->pair1 = pair1;
ci->branch1 = branch1;
ci->branch2 = branch2;
ci->dst_entry1 = dst_entry1;
- dst_entry1->rename_df_conflict_info = ci;
+ dst_entry1->rename_conflict_info = ci;
dst_entry1->processed = 0;
assert(!pair2 == !dst_entry2);
if (dst_entry2) {
ci->dst_entry2 = dst_entry2;
ci->pair2 = pair2;
- dst_entry2->rename_df_conflict_info = ci;
- dst_entry2->processed = 0;
+ dst_entry2->rename_conflict_info = ci;
+ }
+
+ if (rename_type == RENAME_TWO_FILES_TO_ONE) {
+ /*
+ * For each rename, there could have been
+ * modifications on the side of history where that
+ * file was not renamed.
+ */
+ int ostage1 = o->branch1 == branch1 ? 3 : 2;
+ int ostage2 = ostage1 ^ 1;
+
+ ci->ren1_other.path = pair1->one->path;
+ hashcpy(ci->ren1_other.sha1, src_entry1->stages[ostage1].sha);
+ ci->ren1_other.mode = src_entry1->stages[ostage1].mode;
+
+ ci->ren2_other.path = pair2->one->path;
+ hashcpy(ci->ren2_other.sha1, src_entry2->stages[ostage2].sha);
+ ci->ren2_other.mode = src_entry2->stages[ostage2].mode;
}
}
struct string_list *entries)
{
/* If there is a D/F conflict and the file for such a conflict
- * currently exist in the working copy, we want to allow it to
- * be removed to make room for the corresponding directory if
- * needed. The files underneath the directories of such D/F
- * conflicts will be handled in process_entry(), while the
- * files of such D/F conflicts will be processed later in
- * process_df_entry(). If the corresponding directory ends up
- * being removed by the merge, then no additional work needs
- * to be done by process_df_entry() for the conflicting file.
- * If the directory needs to be written to the working copy,
- * then the conflicting file will simply be removed (e.g. in
- * make_room_for_path). If the directory is written to the
- * working copy but the file also has a conflict that needs to
- * be resolved, then process_df_entry() will reinstate the
- * file with a new unique name.
+ * currently exist in the working copy, we want to allow it to be
+ * removed to make room for the corresponding directory if needed.
+ * The files underneath the directories of such D/F conflicts will
+ * be processed before the corresponding file involved in the D/F
+ * conflict. If the D/F directory ends up being removed by the
+ * merge, then we won't have to touch the D/F file. If the D/F
+ * directory needs to be written to the working copy, then the D/F
+ * file will simply be removed (in make_room_for_path()) to make
+ * room for the necessary paths. Note that if both the directory
+ * and the file need to be present, then the D/F file will be
+ * reinstated with a new unique name at the time it is processed.
*/
const char *last_file = NULL;
int last_len = 0;
return merge_status;
}
-static struct merge_file_info merge_file(struct merge_options *o,
- const struct diff_filespec *one,
- const struct diff_filespec *a,
- const struct diff_filespec *b,
- const char *branch1,
- const char *branch2)
+static struct merge_file_info merge_file_1(struct merge_options *o,
+ const struct diff_filespec *one,
+ const struct diff_filespec *a,
+ const struct diff_filespec *b,
+ const char *branch1,
+ const char *branch2)
{
struct merge_file_info result;
result.merge = 0;
return result;
}
+static struct merge_file_info
+merge_file_special_markers(struct merge_options *o,
+ const struct diff_filespec *one,
+ const struct diff_filespec *a,
+ const struct diff_filespec *b,
+ const char *branch1,
+ const char *filename1,
+ const char *branch2,
+ const char *filename2)
+{
+ char *side1 = NULL;
+ char *side2 = NULL;
+ struct merge_file_info mfi;
+
+ if (filename1) {
+ side1 = xmalloc(strlen(branch1) + strlen(filename1) + 2);
+ sprintf(side1, "%s:%s", branch1, filename1);
+ }
+ if (filename2) {
+ side2 = xmalloc(strlen(branch2) + strlen(filename2) + 2);
+ sprintf(side2, "%s:%s", branch2, filename2);
+ }
+
+ mfi = merge_file_1(o, one, a, b,
+ side1 ? side1 : branch1, side2 ? side2 : branch2);
+ free(side1);
+ free(side2);
+ return mfi;
+}
+
+static struct merge_file_info merge_file(struct merge_options *o,
+ const char *path,
+ const unsigned char *o_sha, int o_mode,
+ const unsigned char *a_sha, int a_mode,
+ const unsigned char *b_sha, int b_mode,
+ const char *branch1,
+ const char *branch2)
+{
+ struct diff_filespec one, a, b;
+
+ one.path = a.path = b.path = (char *)path;
+ hashcpy(one.sha1, o_sha);
+ one.mode = o_mode;
+ hashcpy(a.sha1, a_sha);
+ a.mode = a_mode;
+ hashcpy(b.sha1, b_sha);
+ b.mode = b_mode;
+ return merge_file_1(o, &one, &a, &b, branch1, branch2);
+}
+
+static void handle_change_delete(struct merge_options *o,
+ const char *path,
+ const unsigned char *o_sha, int o_mode,
+ const unsigned char *a_sha, int a_mode,
+ const unsigned char *b_sha, int b_mode,
+ const char *change, const char *change_past)
+{
+ char *renamed = NULL;
+ if (dir_in_way(path, !o->call_depth)) {
+ renamed = unique_path(o, path, a_sha ? o->branch1 : o->branch2);
+ }
+
+ if (o->call_depth) {
+ /*
+ * We cannot arbitrarily accept either a_sha or b_sha as
+ * correct; since there is no true "middle point" between
+ * them, simply reuse the base version for virtual merge base.
+ */
+ remove_file_from_cache(path);
+ update_file(o, 0, o_sha, o_mode, renamed ? renamed : path);
+ } else if (!a_sha) {
+ output(o, 1, "CONFLICT (%s/delete): %s deleted in %s "
+ "and %s in %s. Version %s of %s left in tree%s%s.",
+ change, path, o->branch1,
+ change_past, o->branch2, o->branch2, path,
+ NULL == renamed ? "" : " at ",
+ NULL == renamed ? "" : renamed);
+ update_file(o, 0, b_sha, b_mode, renamed ? renamed : path);
+ } else {
+ output(o, 1, "CONFLICT (%s/delete): %s deleted in %s "
+ "and %s in %s. Version %s of %s left in tree%s%s.",
+ change, path, o->branch2,
+ change_past, o->branch1, o->branch1, path,
+ NULL == renamed ? "" : " at ",
+ NULL == renamed ? "" : renamed);
+ update_file(o, 0, a_sha, a_mode, renamed ? renamed : path);
+ }
+ free(renamed);
+}
+
static void conflict_rename_delete(struct merge_options *o,
struct diff_filepair *pair,
const char *rename_branch,
const char *other_branch)
{
- char *dest_name = pair->two->path;
- int df_conflict = 0;
+ const struct diff_filespec *orig = pair->one;
+ const struct diff_filespec *dest = pair->two;
+ const char *path;
+ const unsigned char *a_sha = NULL;
+ const unsigned char *b_sha = NULL;
+ int a_mode = 0;
+ int b_mode = 0;
+
+ if (rename_branch == o->branch1) {
+ a_sha = dest->sha1;
+ a_mode = dest->mode;
+ } else {
+ b_sha = dest->sha1;
+ b_mode = dest->mode;
+ }
- output(o, 1, "CONFLICT (rename/delete): Rename %s->%s in %s "
- "and deleted in %s",
- pair->one->path, pair->two->path, rename_branch,
- other_branch);
- if (!o->call_depth)
- update_stages(dest_name, NULL,
- rename_branch == o->branch1 ? pair->two : NULL,
- rename_branch == o->branch1 ? NULL : pair->two);
- if (dir_in_way(dest_name, !o->call_depth)) {
- dest_name = unique_path(o, dest_name, rename_branch);
- df_conflict = 1;
+ if (o->call_depth) {
+ remove_file_from_cache(dest->path);
+ path = orig->path;
+ } else {
+ path = dest->path;
+ update_stages(dest->path, NULL,
+ rename_branch == o->branch1 ? dest : NULL,
+ rename_branch == o->branch1 ? NULL : dest);
}
- update_file(o, 0, pair->two->sha1, pair->two->mode, dest_name);
- if (df_conflict)
- free(dest_name);
+
+ handle_change_delete(o,
+ path,
+ orig->sha1, orig->mode,
+ a_sha, a_mode,
+ b_sha, b_mode,
+ "rename", "renamed");
}
-static void conflict_rename_rename_1to2(struct merge_options *o,
- struct diff_filepair *pair1,
- const char *branch1,
- struct diff_filepair *pair2,
- const char *branch2)
+static struct diff_filespec *filespec_from_entry(struct diff_filespec *target,
+ struct stage_data *entry,
+ int stage)
{
- /* One file was renamed in both branches, but to different names. */
- char *del[2];
- int delp = 0;
- const char *ren1_dst = pair1->two->path;
- const char *ren2_dst = pair2->two->path;
- const char *dst_name1 = ren1_dst;
- const char *dst_name2 = ren2_dst;
- if (dir_in_way(ren1_dst, !o->call_depth)) {
- dst_name1 = del[delp++] = unique_path(o, ren1_dst, branch1);
- output(o, 1, "%s is a directory in %s adding as %s instead",
- ren1_dst, branch2, dst_name1);
+ unsigned char *sha = entry->stages[stage].sha;
+ unsigned mode = entry->stages[stage].mode;
+ if (mode == 0 || is_null_sha1(sha))
+ return NULL;
+ hashcpy(target->sha1, sha);
+ target->mode = mode;
+ return target;
+}
+
+static void handle_file(struct merge_options *o,
+ struct diff_filespec *rename,
+ int stage,
+ struct rename_conflict_info *ci)
+{
+ char *dst_name = rename->path;
+ struct stage_data *dst_entry;
+ const char *cur_branch, *other_branch;
+ struct diff_filespec other;
+ struct diff_filespec *add;
+
+ if (stage == 2) {
+ dst_entry = ci->dst_entry1;
+ cur_branch = ci->branch1;
+ other_branch = ci->branch2;
+ } else {
+ dst_entry = ci->dst_entry2;
+ cur_branch = ci->branch2;
+ other_branch = ci->branch1;
}
- if (dir_in_way(ren2_dst, !o->call_depth)) {
- dst_name2 = del[delp++] = unique_path(o, ren2_dst, branch2);
- output(o, 1, "%s is a directory in %s adding as %s instead",
- ren2_dst, branch1, dst_name2);
+
+ add = filespec_from_entry(&other, dst_entry, stage ^ 1);
+ if (stage == 2)
+ update_stages(rename->path, NULL, rename, add);
+ else
+ update_stages(rename->path, NULL, add, rename);
+
+ if (add) {
+ char *add_name = unique_path(o, rename->path, other_branch);
+ update_file(o, 0, add->sha1, add->mode, add_name);
+
+ remove_file(o, 0, rename->path, 0);
+ dst_name = unique_path(o, rename->path, cur_branch);
+ } else {
+ if (dir_in_way(rename->path, !o->call_depth)) {
+ dst_name = unique_path(o, rename->path, cur_branch);
+ output(o, 1, "%s is a directory in %s adding as %s instead",
+ rename->path, other_branch, dst_name);
+ }
}
+ update_file(o, 0, rename->sha1, rename->mode, dst_name);
+
+ if (dst_name != rename->path)
+ free(dst_name);
+}
+
+static void conflict_rename_rename_1to2(struct merge_options *o,
+ struct rename_conflict_info *ci)
+{
+ /* One file was renamed in both branches, but to different names. */
+ struct diff_filespec *one = ci->pair1->one;
+ struct diff_filespec *a = ci->pair1->two;
+ struct diff_filespec *b = ci->pair2->two;
+
+ output(o, 1, "CONFLICT (rename/rename): "
+ "Rename \"%s\"->\"%s\" in branch \"%s\" "
+ "rename \"%s\"->\"%s\" in \"%s\"%s",
+ one->path, a->path, ci->branch1,
+ one->path, b->path, ci->branch2,
+ o->call_depth ? " (left unresolved)" : "");
if (o->call_depth) {
- remove_file_from_cache(dst_name1);
- remove_file_from_cache(dst_name2);
+ struct merge_file_info mfi;
+ mfi = merge_file(o, one->path,
+ one->sha1, one->mode,
+ a->sha1, a->mode,
+ b->sha1, b->mode,
+ ci->branch1, ci->branch2);
/*
- * Uncomment to leave the conflicting names in the resulting tree
- *
- * update_file(o, 0, pair1->two->sha1, pair1->two->mode, dst_name1);
- * update_file(o, 0, pair2->two->sha1, pair2->two->mode, dst_name2);
+ * FIXME: For rename/add-source conflicts (if we could detect
+ * such), this is wrong. We should instead find a unique
+ * pathname and then either rename the add-source file to that
+ * unique path, or use that unique path instead of src here.
*/
+ update_file(o, 0, mfi.sha, mfi.mode, one->path);
+ remove_file_from_cache(a->path);
+ remove_file_from_cache(b->path);
} else {
- update_stages(ren1_dst, NULL, pair1->two, NULL);
- update_stages(ren2_dst, NULL, NULL, pair2->two);
-
- update_file(o, 0, pair1->two->sha1, pair1->two->mode, dst_name1);
- update_file(o, 0, pair2->two->sha1, pair2->two->mode, dst_name2);
+ handle_file(o, a, 2, ci);
+ handle_file(o, b, 3, ci);
}
- while (delp--)
- free(del[delp]);
}
static void conflict_rename_rename_2to1(struct merge_options *o,
- struct rename *ren1,
- const char *branch1,
- struct rename *ren2,
- const char *branch2)
+ struct rename_conflict_info *ci)
{
- char *path = ren1->pair->two->path; /* same as ren2->pair->two->path */
- /* Two files were renamed to the same thing. */
+ /* Two files, a & b, were renamed to the same thing, c. */
+ struct diff_filespec *a = ci->pair1->one;
+ struct diff_filespec *b = ci->pair2->one;
+ struct diff_filespec *c1 = ci->pair1->two;
+ struct diff_filespec *c2 = ci->pair2->two;
+ char *path = c1->path; /* == c2->path */
+ struct merge_file_info mfi_c1;
+ struct merge_file_info mfi_c2;
+
+ output(o, 1, "CONFLICT (rename/rename): "
+ "Rename %s->%s in %s. "
+ "Rename %s->%s in %s",
+ a->path, c1->path, ci->branch1,
+ b->path, c2->path, ci->branch2);
+
+ remove_file(o, 1, a->path, would_lose_untracked(a->path));
+ remove_file(o, 1, b->path, would_lose_untracked(b->path));
+
+ mfi_c1 = merge_file_special_markers(o, a, c1, &ci->ren1_other,
+ o->branch1, c1->path,
+ o->branch2, ci->ren1_other.path);
+ mfi_c2 = merge_file_special_markers(o, b, &ci->ren2_other, c2,
+ o->branch1, ci->ren2_other.path,
+ o->branch2, c2->path);
+
if (o->call_depth) {
- struct merge_file_info mfi;
- struct diff_filespec one, a, b;
-
- one.path = a.path = b.path = path;
- hashcpy(one.sha1, null_sha1);
- one.mode = 0;
- hashcpy(a.sha1, ren1->pair->two->sha1);
- a.mode = ren1->pair->two->mode;
- hashcpy(b.sha1, ren2->pair->two->sha1);
- b.mode = ren2->pair->two->mode;
- mfi = merge_file(o, &one, &a, &b, branch1, branch2);
- output(o, 1, "Adding merged %s", path);
- update_file(o, 0, mfi.sha, mfi.mode, path);
+ /*
+ * If mfi_c1.clean && mfi_c2.clean, then it might make
+ * sense to do a two-way merge of those results. But, I
+ * think in all cases, it makes sense to have the virtual
+ * merge base just undo the renames; they can be detected
+ * again later for the non-recursive merge.
+ */
+ remove_file(o, 0, path, 0);
+ update_file(o, 0, mfi_c1.sha, mfi_c1.mode, a->path);
+ update_file(o, 0, mfi_c2.sha, mfi_c2.mode, b->path);
} else {
- char *new_path1 = unique_path(o, path, branch1);
- char *new_path2 = unique_path(o, path, branch2);
+ char *new_path1 = unique_path(o, path, ci->branch1);
+ char *new_path2 = unique_path(o, path, ci->branch2);
output(o, 1, "Renaming %s to %s and %s to %s instead",
- ren1->pair->one->path, new_path1,
- ren2->pair->one->path, new_path2);
+ a->path, new_path1, b->path, new_path2);
remove_file(o, 0, path, 0);
- update_file(o, 0, ren1->pair->two->sha1, ren1->pair->two->mode,
- new_path1);
- update_file(o, 0, ren2->pair->two->sha1, ren2->pair->two->mode,
- new_path2);
+ update_file(o, 0, mfi_c1.sha, mfi_c1.mode, new_path1);
+ update_file(o, 0, mfi_c2.sha, mfi_c2.mode, new_path2);
free(new_path2);
free(new_path1);
}
struct rename *ren1 = NULL, *ren2 = NULL;
const char *branch1, *branch2;
const char *ren1_src, *ren1_dst;
+ struct string_list_item *lookup;
if (i >= a_renames->nr) {
ren2 = b_renames->items[j++].util;
ren1 = tmp;
}
- ren1->dst_entry->processed = 1;
- ren1->src_entry->processed = 1;
-
if (ren1->processed)
continue;
ren1->processed = 1;
+ ren1->dst_entry->processed = 1;
+ /* BUG: We should only mark src_entry as processed if we
+ * are not dealing with a rename + add-source case.
+ */
+ ren1->src_entry->processed = 1;
ren1_src = ren1->pair->one->path;
ren1_dst = ren1->pair->two->path;
if (ren2) {
+ /* One file renamed on both sides */
const char *ren2_src = ren2->pair->one->path;
const char *ren2_dst = ren2->pair->two->path;
- /* Renamed in 1 and renamed in 2 */
+ enum rename_type rename_type;
if (strcmp(ren1_src, ren2_src) != 0)
- die("ren1.src != ren2.src");
+ die("ren1_src != ren2_src");
ren2->dst_entry->processed = 1;
ren2->processed = 1;
if (strcmp(ren1_dst, ren2_dst) != 0) {
- setup_rename_df_conflict_info(RENAME_ONE_FILE_TO_TWO,
- ren1->pair,
- ren2->pair,
- branch1,
- branch2,
- ren1->dst_entry,
- ren2->dst_entry);
+ rename_type = RENAME_ONE_FILE_TO_TWO;
+ clean_merge = 0;
} else {
+ rename_type = RENAME_ONE_FILE_TO_ONE;
+ /* BUG: We should only remove ren1_src in
+ * the base stage (think of rename +
+ * add-source cases).
+ */
remove_file(o, 1, ren1_src, 1);
update_entry(ren1->dst_entry,
ren1->pair->one,
ren1->pair->two,
ren2->pair->two);
- ren1->dst_entry->involved_in_rename = 1;
}
+ setup_rename_conflict_info(rename_type,
+ ren1->pair,
+ ren2->pair,
+ branch1,
+ branch2,
+ ren1->dst_entry,
+ ren2->dst_entry,
+ o,
+ NULL,
+ NULL);
+ } else if ((lookup = string_list_lookup(renames2Dst, ren1_dst))) {
+ /* Two different files renamed to the same thing */
+ char *ren2_dst;
+ ren2 = lookup->util;
+ ren2_dst = ren2->pair->two->path;
+ if (strcmp(ren1_dst, ren2_dst) != 0)
+ die("ren1_dst != ren2_dst");
+
+ clean_merge = 0;
+ ren2->processed = 1;
+ /*
+ * BUG: We should only mark src_entry as processed
+ * if we are not dealing with a rename + add-source
+ * case.
+ */
+ ren2->src_entry->processed = 1;
+
+ setup_rename_conflict_info(RENAME_TWO_FILES_TO_ONE,
+ ren1->pair,
+ ren2->pair,
+ branch1,
+ branch2,
+ ren1->dst_entry,
+ ren2->dst_entry,
+ o,
+ ren1->src_entry,
+ ren2->src_entry);
+
} else {
/* Renamed in 1, maybe changed in 2 */
- struct string_list_item *item;
/* we only use sha1 and mode of these */
struct diff_filespec src_other, dst_other;
int try_merge;
int renamed_stage = a_renames == renames1 ? 2 : 3;
int other_stage = a_renames == renames1 ? 3 : 2;
+ /* BUG: We should only remove ren1_src in the base
+ * stage and in other_stage (think of rename +
+ * add-source case).
+ */
remove_file(o, 1, ren1_src,
renamed_stage == 2 || !was_tracked(ren1_src));
try_merge = 0;
if (sha_eq(src_other.sha1, null_sha1)) {
- if (dir_in_way(ren1_dst, 0 /*check_wc*/)) {
- ren1->dst_entry->processed = 0;
- setup_rename_df_conflict_info(RENAME_DELETE,
- ren1->pair,
- NULL,
- branch1,
- branch2,
- ren1->dst_entry,
- NULL);
- } else {
- clean_merge = 0;
- conflict_rename_delete(o, ren1->pair, branch1, branch2);
- }
- } else if ((item = string_list_lookup(renames2Dst, ren1_dst))) {
- char *ren2_src, *ren2_dst;
- ren2 = item->util;
- ren2_src = ren2->pair->one->path;
- ren2_dst = ren2->pair->two->path;
-
- clean_merge = 0;
- ren2->processed = 1;
- remove_file(o, 1, ren2_src,
- renamed_stage == 3 || would_lose_untracked(ren1_src));
-
- output(o, 1, "CONFLICT (rename/rename): "
- "Rename %s->%s in %s. "
- "Rename %s->%s in %s",
- ren1_src, ren1_dst, branch1,
- ren2_src, ren2_dst, branch2);
- conflict_rename_rename_2to1(o, ren1, branch1, ren2, branch2);
+ setup_rename_conflict_info(RENAME_DELETE,
+ ren1->pair,
+ NULL,
+ branch1,
+ branch2,
+ ren1->dst_entry,
+ NULL,
+ o,
+ NULL,
+ NULL);
} else if ((dst_other.mode == ren1->pair->two->mode) &&
sha_eq(dst_other.sha1, ren1->pair->two->sha1)) {
/* Added file on the other side
ren1_dst, branch2);
if (o->call_depth) {
struct merge_file_info mfi;
- struct diff_filespec one, a, b;
-
- one.path = a.path = b.path =
- (char *)ren1_dst;
- hashcpy(one.sha1, null_sha1);
- one.mode = 0;
- hashcpy(a.sha1, ren1->pair->two->sha1);
- a.mode = ren1->pair->two->mode;
- hashcpy(b.sha1, dst_other.sha1);
- b.mode = dst_other.mode;
- mfi = merge_file(o, &one, &a, &b,
- branch1,
- branch2);
+ mfi = merge_file(o, ren1_dst, null_sha1, 0,
+ ren1->pair->two->sha1, ren1->pair->two->mode,
+ dst_other.sha1, dst_other.mode,
+ branch1, branch2);
output(o, 1, "Adding merged %s", ren1_dst);
- update_file(o, 0,
- mfi.sha,
- mfi.mode,
- ren1_dst);
+ update_file(o, 0, mfi.sha, mfi.mode, ren1_dst);
try_merge = 0;
} else {
char *new_path = unique_path(o, ren1_dst, branch2);
a = &src_other;
}
update_entry(ren1->dst_entry, one, a, b);
- ren1->dst_entry->involved_in_rename = 1;
- if (dir_in_way(ren1_dst, 0 /*check_wc*/)) {
- setup_rename_df_conflict_info(RENAME_NORMAL,
- ren1->pair,
- NULL,
- branch1,
- NULL,
- ren1->dst_entry,
- NULL);
- }
+ setup_rename_conflict_info(RENAME_NORMAL,
+ ren1->pair,
+ NULL,
+ branch1,
+ NULL,
+ ren1->dst_entry,
+ NULL,
+ o,
+ NULL,
+ NULL);
}
}
}
return ret;
}
-static void handle_delete_modify(struct merge_options *o,
+static void handle_modify_delete(struct merge_options *o,
const char *path,
- const char *new_path,
+ unsigned char *o_sha, int o_mode,
unsigned char *a_sha, int a_mode,
unsigned char *b_sha, int b_mode)
{
- if (!a_sha) {
- output(o, 1, "CONFLICT (delete/modify): %s deleted in %s "
- "and modified in %s. Version %s of %s left in tree%s%s.",
- path, o->branch1,
- o->branch2, o->branch2, path,
- path == new_path ? "" : " at ",
- path == new_path ? "" : new_path);
- update_file(o, 0, b_sha, b_mode, new_path);
- } else {
- output(o, 1, "CONFLICT (delete/modify): %s deleted in %s "
- "and modified in %s. Version %s of %s left in tree%s%s.",
- path, o->branch2,
- o->branch1, o->branch1, path,
- path == new_path ? "" : " at ",
- path == new_path ? "" : new_path);
- update_file(o, 0, a_sha, a_mode, new_path);
- }
+ handle_change_delete(o,
+ path,
+ o_sha, o_mode,
+ a_sha, a_mode,
+ b_sha, b_mode,
+ "modify", "modified");
}
static int merge_content(struct merge_options *o,
- unsigned involved_in_rename,
const char *path,
unsigned char *o_sha, int o_mode,
unsigned char *a_sha, int a_mode,
unsigned char *b_sha, int b_mode,
- const char *df_rename_conflict_branch)
+ struct rename_conflict_info *rename_conflict_info)
{
const char *reason = "content";
+ const char *path1 = NULL, *path2 = NULL;
struct merge_file_info mfi;
struct diff_filespec one, a, b;
unsigned df_conflict_remains = 0;
hashcpy(b.sha1, b_sha);
b.mode = b_mode;
- mfi = merge_file(o, &one, &a, &b, o->branch1, o->branch2);
- if (df_rename_conflict_branch &&
- dir_in_way(path, !o->call_depth)) {
- df_conflict_remains = 1;
+ if (rename_conflict_info) {
+ struct diff_filepair *pair1 = rename_conflict_info->pair1;
+
+ path1 = (o->branch1 == rename_conflict_info->branch1) ?
+ pair1->two->path : pair1->one->path;
+ /* If rename_conflict_info->pair2 != NULL, we are in
+ * RENAME_ONE_FILE_TO_ONE case. Otherwise, we have a
+ * normal rename.
+ */
+ path2 = (rename_conflict_info->pair2 ||
+ o->branch2 == rename_conflict_info->branch1) ?
+ pair1->two->path : pair1->one->path;
+
+ if (dir_in_way(path, !o->call_depth))
+ df_conflict_remains = 1;
}
+ mfi = merge_file_special_markers(o, &one, &a, &b,
+ o->branch1, path1,
+ o->branch2, path2);
if (mfi.clean && !df_conflict_remains &&
- sha_eq(mfi.sha, a_sha) && mfi.mode == a.mode)
+ sha_eq(mfi.sha, a_sha) && mfi.mode == a_mode) {
+ int path_renamed_outside_HEAD;
output(o, 3, "Skipped %s (merged same as existing)", path);
- else
+ /*
+ * The content merge resulted in the same file contents we
+ * already had. We can return early if those file contents
+ * are recorded at the correct path (which may not be true
+ * if the merge involves a rename).
+ */
+ path_renamed_outside_HEAD = !path2 || !strcmp(path, path2);
+ if (!path_renamed_outside_HEAD) {
+ add_cacheinfo(mfi.mode, mfi.sha, path,
+ 0 /*stage*/, 1 /*refresh*/, 0 /*options*/);
+ return mfi.clean;
+ }
+ } else
output(o, 2, "Auto-merging %s", path);
if (!mfi.clean) {
reason = "submodule";
output(o, 1, "CONFLICT (%s): Merge conflict in %s",
reason, path);
- if (involved_in_rename)
+ if (rename_conflict_info && !df_conflict_remains)
update_stages(path, &one, &a, &b);
}
if (df_conflict_remains) {
char *new_path;
- update_file_flags(o, mfi.sha, mfi.mode, path,
- o->call_depth || mfi.clean, 0);
- new_path = unique_path(o, path, df_rename_conflict_branch);
- mfi.clean = 0;
+ if (o->call_depth) {
+ remove_file_from_cache(path);
+ } else {
+ if (!mfi.clean)
+ update_stages(path, &one, &a, &b);
+ else {
+ int file_from_stage2 = was_tracked(path);
+ struct diff_filespec merged;
+ hashcpy(merged.sha1, mfi.sha);
+ merged.mode = mfi.mode;
+
+ update_stages(path, NULL,
+ file_from_stage2 ? &merged : NULL,
+ file_from_stage2 ? NULL : &merged);
+ }
+
+ }
+ new_path = unique_path(o, path, rename_conflict_info->branch1);
output(o, 1, "Adding as %s instead", new_path);
- update_file_flags(o, mfi.sha, mfi.mode, new_path, 0, 1);
+ update_file(o, 0, mfi.sha, mfi.mode, new_path);
free(new_path);
+ mfi.clean = 0;
} else {
update_file(o, mfi.clean, mfi.sha, mfi.mode, path);
}
unsigned char *a_sha = stage_sha(entry->stages[2].sha, a_mode);
unsigned char *b_sha = stage_sha(entry->stages[3].sha, b_mode);
- if (entry->rename_df_conflict_info)
- return 1; /* Such cases are handled elsewhere. */
-
entry->processed = 1;
- if (o_sha && (!a_sha || !b_sha)) {
- /* Case A: Deleted in one */
- if ((!a_sha && !b_sha) ||
- (!b_sha && blob_unchanged(o_sha, a_sha, normalize, path)) ||
- (!a_sha && blob_unchanged(o_sha, b_sha, normalize, path))) {
- /* Deleted in both or deleted in one and
- * unchanged in the other */
- if (a_sha)
- output(o, 2, "Removing %s", path);
- /* do not touch working file if it did not exist */
- remove_file(o, 1, path, !a_sha);
- } else if (dir_in_way(path, 0 /*check_wc*/)) {
- entry->processed = 0;
- return 1; /* Assume clean until processed */
- } else {
- /* Deleted in one and changed in the other */
- clean_merge = 0;
- handle_delete_modify(o, path, path,
- a_sha, a_mode, b_sha, b_mode);
- }
-
- } else if ((!o_sha && a_sha && !b_sha) ||
- (!o_sha && !a_sha && b_sha)) {
- /* Case B: Added in one. */
- unsigned mode;
- const unsigned char *sha;
-
- if (a_sha) {
- mode = a_mode;
- sha = a_sha;
- } else {
- mode = b_mode;
- sha = b_sha;
- }
- if (dir_in_way(path, 0 /*check_wc*/)) {
- /* Handle D->F conflicts after all subfiles */
- entry->processed = 0;
- return 1; /* Assume clean until processed */
- } else {
- output(o, 2, "Adding %s", path);
- update_file(o, 1, sha, mode, path);
- }
- } else if (a_sha && b_sha) {
- /* Case C: Added in both (check for same permissions) and */
- /* case D: Modified in both, but differently. */
- clean_merge = merge_content(o, entry->involved_in_rename, path,
- o_sha, o_mode, a_sha, a_mode, b_sha, b_mode,
- NULL);
- } else if (!o_sha && !a_sha && !b_sha) {
- /*
- * this entry was deleted altogether. a_mode == 0 means
- * we had that path and want to actively remove it.
- */
- remove_file(o, 1, path, !a_mode);
- } else
- die("Fatal merge failure, shouldn't happen.");
-
- return clean_merge;
-}
-
-/*
- * Per entry merge function for D/F (and/or rename) conflicts. In the
- * cases we can cleanly resolve D/F conflicts, process_entry() can
- * clean out all the files below the directory for us. All D/F
- * conflict cases must be handled here at the end to make sure any
- * directories that can be cleaned out, are.
- *
- * Some rename conflicts may also be handled here that don't necessarily
- * involve D/F conflicts, since the code to handle them is generic enough
- * to handle those rename conflicts with or without D/F conflicts also
- * being involved.
- */
-static int process_df_entry(struct merge_options *o,
- const char *path, struct stage_data *entry)
-{
- int clean_merge = 1;
- unsigned o_mode = entry->stages[1].mode;
- unsigned a_mode = entry->stages[2].mode;
- unsigned b_mode = entry->stages[3].mode;
- unsigned char *o_sha = stage_sha(entry->stages[1].sha, o_mode);
- unsigned char *a_sha = stage_sha(entry->stages[2].sha, a_mode);
- unsigned char *b_sha = stage_sha(entry->stages[3].sha, b_mode);
-
- entry->processed = 1;
- if (entry->rename_df_conflict_info) {
- struct rename_df_conflict_info *conflict_info = entry->rename_df_conflict_info;
- char *src;
+ if (entry->rename_conflict_info) {
+ struct rename_conflict_info *conflict_info = entry->rename_conflict_info;
switch (conflict_info->rename_type) {
case RENAME_NORMAL:
- clean_merge = merge_content(o, entry->involved_in_rename, path,
+ case RENAME_ONE_FILE_TO_ONE:
+ clean_merge = merge_content(o, path,
o_sha, o_mode, a_sha, a_mode, b_sha, b_mode,
- conflict_info->branch1);
+ conflict_info);
break;
case RENAME_DELETE:
clean_merge = 0;
conflict_info->branch2);
break;
case RENAME_ONE_FILE_TO_TWO:
- src = conflict_info->pair1->one->path;
clean_merge = 0;
- output(o, 1, "CONFLICT (rename/rename): "
- "Rename \"%s\"->\"%s\" in branch \"%s\" "
- "rename \"%s\"->\"%s\" in \"%s\"%s",
- src, conflict_info->pair1->two->path, conflict_info->branch1,
- src, conflict_info->pair2->two->path, conflict_info->branch2,
- o->call_depth ? " (left unresolved)" : "");
- if (o->call_depth) {
- remove_file_from_cache(src);
- update_file(o, 0, conflict_info->pair1->one->sha1,
- conflict_info->pair1->one->mode, src);
- }
- conflict_rename_rename_1to2(o, conflict_info->pair1,
- conflict_info->branch1,
- conflict_info->pair2,
- conflict_info->branch2);
- conflict_info->dst_entry2->processed = 1;
+ conflict_rename_rename_1to2(o, conflict_info);
+ break;
+ case RENAME_TWO_FILES_TO_ONE:
+ clean_merge = 0;
+ conflict_rename_rename_2to1(o, conflict_info);
break;
default:
entry->processed = 0;
break;
}
} else if (o_sha && (!a_sha || !b_sha)) {
- /* Modify/delete; deleted side may have put a directory in the way */
- char *renamed = NULL;
- if (dir_in_way(path, !o->call_depth)) {
- renamed = unique_path(o, path, a_sha ? o->branch1 : o->branch2);
+ /* Case A: Deleted in one */
+ if ((!a_sha && !b_sha) ||
+ (!b_sha && blob_unchanged(o_sha, a_sha, normalize, path)) ||
+ (!a_sha && blob_unchanged(o_sha, b_sha, normalize, path))) {
+ /* Deleted in both or deleted in one and
+ * unchanged in the other */
+ if (a_sha)
+ output(o, 2, "Removing %s", path);
+ /* do not touch working file if it did not exist */
+ remove_file(o, 1, path, !a_sha);
+ } else {
+ /* Modify/delete; deleted side may have put a directory in the way */
+ clean_merge = 0;
+ handle_modify_delete(o, path, o_sha, o_mode,
+ a_sha, a_mode, b_sha, b_mode);
}
- clean_merge = 0;
- handle_delete_modify(o, path, renamed ? renamed : path,
- a_sha, a_mode, b_sha, b_mode);
- free(renamed);
- } else if (!o_sha && !!a_sha != !!b_sha) {
- /* directory -> (directory, file) or <nothing> -> (directory, file) */
+ } else if ((!o_sha && a_sha && !b_sha) ||
+ (!o_sha && !a_sha && b_sha)) {
+ /* Case B: Added in one. */
+ /* [nothing|directory] -> ([nothing|directory], file) */
+
const char *add_branch;
const char *other_branch;
unsigned mode;
output(o, 1, "CONFLICT (%s): There is a directory with name %s in %s. "
"Adding %s as %s",
conf, path, other_branch, path, new_path);
+ if (o->call_depth)
+ remove_file_from_cache(path);
update_file(o, 0, sha, mode, new_path);
if (o->call_depth)
remove_file_from_cache(path);
output(o, 2, "Adding %s", path);
update_file(o, 1, sha, mode, path);
}
- } else {
- entry->processed = 0;
- return 1; /* not handled; assume clean until processed */
- }
+ } else if (a_sha && b_sha) {
+ /* Case C: Added in both (check for same permissions) and */
+ /* case D: Modified in both, but differently. */
+ clean_merge = merge_content(o, path,
+ o_sha, o_mode, a_sha, a_mode, b_sha, b_mode,
+ NULL);
+ } else if (!o_sha && !a_sha && !b_sha) {
+ /*
+ * this entry was deleted altogether. a_mode == 0 means
+ * we had that path and want to actively remove it.
+ */
+ remove_file(o, 1, path, !a_mode);
+ } else
+ die("Fatal merge failure, shouldn't happen.");
return clean_merge;
}
re_head = get_renames(o, head, common, head, merge, entries);
re_merge = get_renames(o, merge, common, head, merge, entries);
clean = process_renames(o, re_head, re_merge);
- for (i = 0; i < entries->nr; i++) {
+ for (i = entries->nr-1; 0 <= i; i--) {
const char *path = entries->items[i].string;
struct stage_data *e = entries->items[i].util;
if (!e->processed
&& !process_entry(o, path, e))
clean = 0;
}
- for (i = 0; i < entries->nr; i++) {
- const char *path = entries->items[i].string;
- struct stage_data *e = entries->items[i].util;
- if (!e->processed
- && !process_df_entry(o, path, e))
- clean = 0;
- }
for (i = 0; i < entries->nr; i++) {
struct stage_data *e = entries->items[i].util;
if (!e->processed)