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merge-recursive: Cleanup and consolidation of rename_conflict_info 

The consolidation of process_entry() and process_df_entry() allows us to
consolidate more code paths concerning rename conflicts, and to do
a few additional related cleanups.  It also means we are using
rename_df_conflict_info in some cases where there is no D/F conflict;
rename it to rename_conflict_info.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Elijah Newren 2011-08-11 23:20:08 -06:00 committed by Junio C Hamano
parent edd2faf52e
commit 4f66dade81
1 changed files with 66 additions and 68 deletions
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134
merge-recursive.c
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@ -66,10 +66,11 @@ static int sha_eq(const unsigned char *a, const unsigned char *b)
enum rename_type {
RENAME_NORMAL = 0,
RENAME_DELETE,
RENAME_ONE_FILE_TO_ONE,
RENAME_ONE_FILE_TO_TWO
};

struct rename_df_conflict_info {
struct rename_conflict_info {
enum rename_type rename_type;
struct diff_filepair *pair1;
struct diff_filepair *pair2;
@ -88,34 +89,33 @@ struct stage_data {
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 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->rename_conflict_info = ci;
}
}

@ -952,10 +952,29 @@ static void conflict_rename_rename_1to2(struct merge_options *o,
/* One file was renamed in both branches, but to different names. */
char *del[2];
int delp = 0;
const char *src = pair1->one->path;
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;

output(o, 1, "CONFLICT (rename/rename): "
"Rename \"%s\"->\"%s\" in branch \"%s\" "
"rename \"%s\"->\"%s\" in \"%s\"%s",
src, pair1->two->path, branch1,
src, pair2->two->path, branch2,
o->call_depth ? " (left unresolved)" : "");
if (o->call_depth) {
/*
* FIXME: Why remove file from cache, and then
* immediately readd it? Why not just overwrite using
* update_file only? Also...this is buggy for
* rename/add-source situations...
*/
remove_file_from_cache(src);
update_file(o, 0, pair1->one->sha1, pair1->one->mode, src);
}

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",
@ -1096,20 +1115,16 @@ static int process_renames(struct merge_options *o,
if (ren2) {
const char *ren2_src = ren2->pair->one->path;
const char *ren2_dst = ren2->pair->two->path;
enum rename_type rename_type;
/* Renamed in 1 and renamed in 2 */
if (strcmp(ren1_src, ren2_src) != 0)
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;
} 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).
@ -1119,8 +1134,14 @@ static int process_renames(struct merge_options *o,
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);
} else {
/* Renamed in 1, maybe changed in 2 */
struct string_list_item *item;
@ -1151,19 +1172,13 @@ static int process_renames(struct merge_options *o,
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);
}
setup_rename_conflict_info(RENAME_DELETE,
ren1->pair,
NULL,
branch1,
branch2,
ren1->dst_entry,
NULL);
} else if ((item = string_list_lookup(renames2Dst, ren1_dst))) {
char *ren2_src, *ren2_dst;
ren2 = item->util;
@ -1237,16 +1252,13 @@ static int process_renames(struct merge_options *o,
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);
}
}
}
@ -1334,12 +1346,11 @@ static void handle_delete_modify(struct merge_options *o,
}

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";
struct merge_file_info mfi;
@ -1359,8 +1370,7 @@ static int merge_content(struct merge_options *o,
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)) {
if (rename_conflict_info && dir_in_way(path, !o->call_depth)) {
df_conflict_remains = 1;
}

@ -1375,7 +1385,7 @@ static int merge_content(struct merge_options *o,
reason = "submodule";
output(o, 1, "CONFLICT (%s): Merge conflict in %s",
reason, path);
if (involved_in_rename && !df_conflict_remains)
if (rename_conflict_info && !df_conflict_remains)
update_stages(path, &one, &a, &b);
}

@ -1398,7 +1408,7 @@ static int merge_content(struct merge_options *o,
}

}
new_path = unique_path(o, path, df_rename_conflict_branch);
new_path = unique_path(o, path, rename_conflict_info->branch1);
output(o, 1, "Adding as %s instead", new_path);
update_file(o, 0, mfi.sha, mfi.mode, new_path);
free(new_path);
@ -1428,14 +1438,14 @@ static int process_entry(struct merge_options *o,
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;
@ -1444,19 +1454,7 @@ static int process_entry(struct merge_options *o,
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,
@ -1531,7 +1529,7 @@ static int process_entry(struct merge_options *o,
} 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,
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) {