Permalink
Cannot retrieve contributors at this time
751 lines (676 sloc)
22.6 KB
#include "cache.h" | |
#include "commit.h" | |
#include "refs.h" | |
#include "object-store.h" | |
#include "repository.h" | |
#include "diff.h" | |
#include "diffcore.h" | |
#include "xdiff-interface.h" | |
#include "ll-merge.h" | |
#include "dir.h" | |
#include "notes.h" | |
#include "notes-merge.h" | |
#include "strbuf.h" | |
#include "notes-utils.h" | |
#include "commit-reach.h" | |
struct notes_merge_pair { | |
struct object_id obj, base, local, remote; | |
}; | |
void init_notes_merge_options(struct repository *r, | |
struct notes_merge_options *o) | |
{ | |
memset(o, 0, sizeof(struct notes_merge_options)); | |
strbuf_init(&(o->commit_msg), 0); | |
o->verbosity = NOTES_MERGE_VERBOSITY_DEFAULT; | |
o->repo = r; | |
} | |
static int path_to_oid(const char *path, struct object_id *oid) | |
{ | |
char hex_oid[GIT_MAX_HEXSZ]; | |
int i = 0; | |
while (*path && i < the_hash_algo->hexsz) { | |
if (*path != '/') | |
hex_oid[i++] = *path; | |
path++; | |
} | |
if (*path || i != the_hash_algo->hexsz) | |
return -1; | |
return get_oid_hex(hex_oid, oid); | |
} | |
static int verify_notes_filepair(struct diff_filepair *p, struct object_id *oid) | |
{ | |
switch (p->status) { | |
case DIFF_STATUS_MODIFIED: | |
assert(p->one->mode == p->two->mode); | |
assert(!is_null_oid(&p->one->oid)); | |
assert(!is_null_oid(&p->two->oid)); | |
break; | |
case DIFF_STATUS_ADDED: | |
assert(is_null_oid(&p->one->oid)); | |
break; | |
case DIFF_STATUS_DELETED: | |
assert(is_null_oid(&p->two->oid)); | |
break; | |
default: | |
return -1; | |
} | |
assert(!strcmp(p->one->path, p->two->path)); | |
return path_to_oid(p->one->path, oid); | |
} | |
static struct notes_merge_pair *find_notes_merge_pair_pos( | |
struct notes_merge_pair *list, int len, struct object_id *obj, | |
int insert_new, int *occupied) | |
{ | |
/* | |
* Both diff_tree_remote() and diff_tree_local() tend to process | |
* merge_pairs in ascending order. Therefore, cache last returned | |
* index, and search sequentially from there until the appropriate | |
* position is found. | |
* | |
* Since inserts only happen from diff_tree_remote() (which mainly | |
* _appends_), we don't care that inserting into the middle of the | |
* list is expensive (using memmove()). | |
*/ | |
static int last_index; | |
int i = last_index < len ? last_index : len - 1; | |
int prev_cmp = 0, cmp = -1; | |
while (i >= 0 && i < len) { | |
cmp = oidcmp(obj, &list[i].obj); | |
if (!cmp) /* obj belongs @ i */ | |
break; | |
else if (cmp < 0 && prev_cmp <= 0) /* obj belongs < i */ | |
i--; | |
else if (cmp < 0) /* obj belongs between i-1 and i */ | |
break; | |
else if (cmp > 0 && prev_cmp >= 0) /* obj belongs > i */ | |
i++; | |
else /* if (cmp > 0) */ { /* obj belongs between i and i+1 */ | |
i++; | |
break; | |
} | |
prev_cmp = cmp; | |
} | |
if (i < 0) | |
i = 0; | |
/* obj belongs at, or immediately preceding, index i (0 <= i <= len) */ | |
if (!cmp) | |
*occupied = 1; | |
else { | |
*occupied = 0; | |
if (insert_new && i < len) { | |
MOVE_ARRAY(list + i + 1, list + i, len - i); | |
memset(list + i, 0, sizeof(struct notes_merge_pair)); | |
} | |
} | |
last_index = i; | |
return list + i; | |
} | |
static struct object_id uninitialized = { | |
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff" \ | |
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff" | |
}; | |
static struct notes_merge_pair *diff_tree_remote(struct notes_merge_options *o, | |
const struct object_id *base, | |
const struct object_id *remote, | |
int *num_changes) | |
{ | |
struct diff_options opt; | |
struct notes_merge_pair *changes; | |
int i, len = 0; | |
trace_printf("\tdiff_tree_remote(base = %.7s, remote = %.7s)\n", | |
oid_to_hex(base), oid_to_hex(remote)); | |
repo_diff_setup(o->repo, &opt); | |
opt.flags.recursive = 1; | |
opt.output_format = DIFF_FORMAT_NO_OUTPUT; | |
diff_setup_done(&opt); | |
diff_tree_oid(base, remote, "", &opt); | |
diffcore_std(&opt); | |
CALLOC_ARRAY(changes, diff_queued_diff.nr); | |
for (i = 0; i < diff_queued_diff.nr; i++) { | |
struct diff_filepair *p = diff_queued_diff.queue[i]; | |
struct notes_merge_pair *mp; | |
int occupied; | |
struct object_id obj; | |
if (verify_notes_filepair(p, &obj)) { | |
trace_printf("\t\tCannot merge entry '%s' (%c): " | |
"%.7s -> %.7s. Skipping!\n", p->one->path, | |
p->status, oid_to_hex(&p->one->oid), | |
oid_to_hex(&p->two->oid)); | |
continue; | |
} | |
mp = find_notes_merge_pair_pos(changes, len, &obj, 1, &occupied); | |
if (occupied) { | |
/* We've found an addition/deletion pair */ | |
assert(oideq(&mp->obj, &obj)); | |
if (is_null_oid(&p->one->oid)) { /* addition */ | |
assert(is_null_oid(&mp->remote)); | |
oidcpy(&mp->remote, &p->two->oid); | |
} else if (is_null_oid(&p->two->oid)) { /* deletion */ | |
assert(is_null_oid(&mp->base)); | |
oidcpy(&mp->base, &p->one->oid); | |
} else | |
assert(!"Invalid existing change recorded"); | |
} else { | |
oidcpy(&mp->obj, &obj); | |
oidcpy(&mp->base, &p->one->oid); | |
oidcpy(&mp->local, &uninitialized); | |
oidcpy(&mp->remote, &p->two->oid); | |
len++; | |
} | |
trace_printf("\t\tStored remote change for %s: %.7s -> %.7s\n", | |
oid_to_hex(&mp->obj), oid_to_hex(&mp->base), | |
oid_to_hex(&mp->remote)); | |
} | |
diff_flush(&opt); | |
clear_pathspec(&opt.pathspec); | |
*num_changes = len; | |
return changes; | |
} | |
static void diff_tree_local(struct notes_merge_options *o, | |
struct notes_merge_pair *changes, int len, | |
const struct object_id *base, | |
const struct object_id *local) | |
{ | |
struct diff_options opt; | |
int i; | |
trace_printf("\tdiff_tree_local(len = %i, base = %.7s, local = %.7s)\n", | |
len, oid_to_hex(base), oid_to_hex(local)); | |
repo_diff_setup(o->repo, &opt); | |
opt.flags.recursive = 1; | |
opt.output_format = DIFF_FORMAT_NO_OUTPUT; | |
diff_setup_done(&opt); | |
diff_tree_oid(base, local, "", &opt); | |
diffcore_std(&opt); | |
for (i = 0; i < diff_queued_diff.nr; i++) { | |
struct diff_filepair *p = diff_queued_diff.queue[i]; | |
struct notes_merge_pair *mp; | |
int match; | |
struct object_id obj; | |
if (verify_notes_filepair(p, &obj)) { | |
trace_printf("\t\tCannot merge entry '%s' (%c): " | |
"%.7s -> %.7s. Skipping!\n", p->one->path, | |
p->status, oid_to_hex(&p->one->oid), | |
oid_to_hex(&p->two->oid)); | |
continue; | |
} | |
mp = find_notes_merge_pair_pos(changes, len, &obj, 0, &match); | |
if (!match) { | |
trace_printf("\t\tIgnoring local-only change for %s: " | |
"%.7s -> %.7s\n", oid_to_hex(&obj), | |
oid_to_hex(&p->one->oid), | |
oid_to_hex(&p->two->oid)); | |
continue; | |
} | |
assert(oideq(&mp->obj, &obj)); | |
if (is_null_oid(&p->two->oid)) { /* deletion */ | |
/* | |
* Either this is a true deletion (1), or it is part | |
* of an A/D pair (2), or D/A pair (3): | |
* | |
* (1) mp->local is uninitialized; set it to null_sha1 | |
* (2) mp->local is not uninitialized; don't touch it | |
* (3) mp->local is uninitialized; set it to null_sha1 | |
* (will be overwritten by following addition) | |
*/ | |
if (oideq(&mp->local, &uninitialized)) | |
oidclr(&mp->local); | |
} else if (is_null_oid(&p->one->oid)) { /* addition */ | |
/* | |
* Either this is a true addition (1), or it is part | |
* of an A/D pair (2), or D/A pair (3): | |
* | |
* (1) mp->local is uninitialized; set to p->two->sha1 | |
* (2) mp->local is uninitialized; set to p->two->sha1 | |
* (3) mp->local is null_sha1; set to p->two->sha1 | |
*/ | |
assert(is_null_oid(&mp->local) || | |
oideq(&mp->local, &uninitialized)); | |
oidcpy(&mp->local, &p->two->oid); | |
} else { /* modification */ | |
/* | |
* This is a true modification. p->one->sha1 shall | |
* match mp->base, and mp->local shall be uninitialized. | |
* Set mp->local to p->two->sha1. | |
*/ | |
assert(oideq(&p->one->oid, &mp->base)); | |
assert(oideq(&mp->local, &uninitialized)); | |
oidcpy(&mp->local, &p->two->oid); | |
} | |
trace_printf("\t\tStored local change for %s: %.7s -> %.7s\n", | |
oid_to_hex(&mp->obj), oid_to_hex(&mp->base), | |
oid_to_hex(&mp->local)); | |
} | |
diff_flush(&opt); | |
clear_pathspec(&opt.pathspec); | |
} | |
static void check_notes_merge_worktree(struct notes_merge_options *o) | |
{ | |
if (!o->has_worktree) { | |
/* | |
* Must establish NOTES_MERGE_WORKTREE. | |
* Abort if NOTES_MERGE_WORKTREE already exists | |
*/ | |
if (file_exists(git_path(NOTES_MERGE_WORKTREE)) && | |
!is_empty_dir(git_path(NOTES_MERGE_WORKTREE))) { | |
if (advice_resolve_conflict) | |
die(_("You have not concluded your previous " | |
"notes merge (%s exists).\nPlease, use " | |
"'git notes merge --commit' or 'git notes " | |
"merge --abort' to commit/abort the " | |
"previous merge before you start a new " | |
"notes merge."), git_path("NOTES_MERGE_*")); | |
else | |
die(_("You have not concluded your notes merge " | |
"(%s exists)."), git_path("NOTES_MERGE_*")); | |
} | |
if (safe_create_leading_directories_const(git_path( | |
NOTES_MERGE_WORKTREE "/.test"))) | |
die_errno("unable to create directory %s", | |
git_path(NOTES_MERGE_WORKTREE)); | |
o->has_worktree = 1; | |
} else if (!file_exists(git_path(NOTES_MERGE_WORKTREE))) | |
/* NOTES_MERGE_WORKTREE should already be established */ | |
die("missing '%s'. This should not happen", | |
git_path(NOTES_MERGE_WORKTREE)); | |
} | |
static void write_buf_to_worktree(const struct object_id *obj, | |
const char *buf, unsigned long size) | |
{ | |
int fd; | |
char *path = git_pathdup(NOTES_MERGE_WORKTREE "/%s", oid_to_hex(obj)); | |
if (safe_create_leading_directories_const(path)) | |
die_errno("unable to create directory for '%s'", path); | |
fd = xopen(path, O_WRONLY | O_EXCL | O_CREAT, 0666); | |
while (size > 0) { | |
ssize_t ret = write_in_full(fd, buf, size); | |
if (ret < 0) { | |
/* Ignore epipe */ | |
if (errno == EPIPE) | |
break; | |
die_errno("notes-merge"); | |
} | |
size -= ret; | |
buf += ret; | |
} | |
close(fd); | |
free(path); | |
} | |
static void write_note_to_worktree(const struct object_id *obj, | |
const struct object_id *note) | |
{ | |
enum object_type type; | |
unsigned long size; | |
void *buf = read_object_file(note, &type, &size); | |
if (!buf) | |
die("cannot read note %s for object %s", | |
oid_to_hex(note), oid_to_hex(obj)); | |
if (type != OBJ_BLOB) | |
die("blob expected in note %s for object %s", | |
oid_to_hex(note), oid_to_hex(obj)); | |
write_buf_to_worktree(obj, buf, size); | |
free(buf); | |
} | |
static int ll_merge_in_worktree(struct notes_merge_options *o, | |
struct notes_merge_pair *p) | |
{ | |
mmbuffer_t result_buf; | |
mmfile_t base, local, remote; | |
int status; | |
read_mmblob(&base, &p->base); | |
read_mmblob(&local, &p->local); | |
read_mmblob(&remote, &p->remote); | |
status = ll_merge(&result_buf, oid_to_hex(&p->obj), &base, NULL, | |
&local, o->local_ref, &remote, o->remote_ref, | |
o->repo->index, NULL); | |
free(base.ptr); | |
free(local.ptr); | |
free(remote.ptr); | |
if ((status < 0) || !result_buf.ptr) | |
die("Failed to execute internal merge"); | |
write_buf_to_worktree(&p->obj, result_buf.ptr, result_buf.size); | |
free(result_buf.ptr); | |
return status; | |
} | |
static int merge_one_change_manual(struct notes_merge_options *o, | |
struct notes_merge_pair *p, | |
struct notes_tree *t) | |
{ | |
const char *lref = o->local_ref ? o->local_ref : "local version"; | |
const char *rref = o->remote_ref ? o->remote_ref : "remote version"; | |
trace_printf("\t\t\tmerge_one_change_manual(obj = %.7s, base = %.7s, " | |
"local = %.7s, remote = %.7s)\n", | |
oid_to_hex(&p->obj), oid_to_hex(&p->base), | |
oid_to_hex(&p->local), oid_to_hex(&p->remote)); | |
/* add "Conflicts:" section to commit message first time through */ | |
if (!o->has_worktree) | |
strbuf_addstr(&(o->commit_msg), "\n\nConflicts:\n"); | |
strbuf_addf(&(o->commit_msg), "\t%s\n", oid_to_hex(&p->obj)); | |
if (o->verbosity >= 2) | |
printf("Auto-merging notes for %s\n", oid_to_hex(&p->obj)); | |
check_notes_merge_worktree(o); | |
if (is_null_oid(&p->local)) { | |
/* D/F conflict, checkout p->remote */ | |
assert(!is_null_oid(&p->remote)); | |
if (o->verbosity >= 1) | |
printf("CONFLICT (delete/modify): Notes for object %s " | |
"deleted in %s and modified in %s. Version from %s " | |
"left in tree.\n", | |
oid_to_hex(&p->obj), lref, rref, rref); | |
write_note_to_worktree(&p->obj, &p->remote); | |
} else if (is_null_oid(&p->remote)) { | |
/* D/F conflict, checkout p->local */ | |
assert(!is_null_oid(&p->local)); | |
if (o->verbosity >= 1) | |
printf("CONFLICT (delete/modify): Notes for object %s " | |
"deleted in %s and modified in %s. Version from %s " | |
"left in tree.\n", | |
oid_to_hex(&p->obj), rref, lref, lref); | |
write_note_to_worktree(&p->obj, &p->local); | |
} else { | |
/* "regular" conflict, checkout result of ll_merge() */ | |
const char *reason = "content"; | |
if (is_null_oid(&p->base)) | |
reason = "add/add"; | |
assert(!is_null_oid(&p->local)); | |
assert(!is_null_oid(&p->remote)); | |
if (o->verbosity >= 1) | |
printf("CONFLICT (%s): Merge conflict in notes for " | |
"object %s\n", reason, | |
oid_to_hex(&p->obj)); | |
ll_merge_in_worktree(o, p); | |
} | |
trace_printf("\t\t\tremoving from partial merge result\n"); | |
remove_note(t, p->obj.hash); | |
return 1; | |
} | |
static int merge_one_change(struct notes_merge_options *o, | |
struct notes_merge_pair *p, struct notes_tree *t) | |
{ | |
/* | |
* Return 0 if change is successfully resolved (stored in notes_tree). | |
* Return 1 is change results in a conflict (NOT stored in notes_tree, | |
* but instead written to NOTES_MERGE_WORKTREE with conflict markers). | |
*/ | |
switch (o->strategy) { | |
case NOTES_MERGE_RESOLVE_MANUAL: | |
return merge_one_change_manual(o, p, t); | |
case NOTES_MERGE_RESOLVE_OURS: | |
if (o->verbosity >= 2) | |
printf("Using local notes for %s\n", | |
oid_to_hex(&p->obj)); | |
/* nothing to do */ | |
return 0; | |
case NOTES_MERGE_RESOLVE_THEIRS: | |
if (o->verbosity >= 2) | |
printf("Using remote notes for %s\n", | |
oid_to_hex(&p->obj)); | |
if (add_note(t, &p->obj, &p->remote, combine_notes_overwrite)) | |
BUG("combine_notes_overwrite failed"); | |
return 0; | |
case NOTES_MERGE_RESOLVE_UNION: | |
if (o->verbosity >= 2) | |
printf("Concatenating local and remote notes for %s\n", | |
oid_to_hex(&p->obj)); | |
if (add_note(t, &p->obj, &p->remote, combine_notes_concatenate)) | |
die("failed to concatenate notes " | |
"(combine_notes_concatenate)"); | |
return 0; | |
case NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ: | |
if (o->verbosity >= 2) | |
printf("Concatenating unique lines in local and remote " | |
"notes for %s\n", oid_to_hex(&p->obj)); | |
if (add_note(t, &p->obj, &p->remote, combine_notes_cat_sort_uniq)) | |
die("failed to concatenate notes " | |
"(combine_notes_cat_sort_uniq)"); | |
return 0; | |
} | |
die("Unknown strategy (%i).", o->strategy); | |
} | |
static int merge_changes(struct notes_merge_options *o, | |
struct notes_merge_pair *changes, int *num_changes, | |
struct notes_tree *t) | |
{ | |
int i, conflicts = 0; | |
trace_printf("\tmerge_changes(num_changes = %i)\n", *num_changes); | |
for (i = 0; i < *num_changes; i++) { | |
struct notes_merge_pair *p = changes + i; | |
trace_printf("\t\t%.7s: %.7s -> %.7s/%.7s\n", | |
oid_to_hex(&p->obj), oid_to_hex(&p->base), | |
oid_to_hex(&p->local), | |
oid_to_hex(&p->remote)); | |
if (oideq(&p->base, &p->remote)) { | |
/* no remote change; nothing to do */ | |
trace_printf("\t\t\tskipping (no remote change)\n"); | |
} else if (oideq(&p->local, &p->remote)) { | |
/* same change in local and remote; nothing to do */ | |
trace_printf("\t\t\tskipping (local == remote)\n"); | |
} else if (oideq(&p->local, &uninitialized) || | |
oideq(&p->local, &p->base)) { | |
/* no local change; adopt remote change */ | |
trace_printf("\t\t\tno local change, adopted remote\n"); | |
if (add_note(t, &p->obj, &p->remote, | |
combine_notes_overwrite)) | |
BUG("combine_notes_overwrite failed"); | |
} else { | |
/* need file-level merge between local and remote */ | |
trace_printf("\t\t\tneed content-level merge\n"); | |
conflicts += merge_one_change(o, p, t); | |
} | |
} | |
return conflicts; | |
} | |
static int merge_from_diffs(struct notes_merge_options *o, | |
const struct object_id *base, | |
const struct object_id *local, | |
const struct object_id *remote, | |
struct notes_tree *t) | |
{ | |
struct notes_merge_pair *changes; | |
int num_changes, conflicts; | |
trace_printf("\tmerge_from_diffs(base = %.7s, local = %.7s, " | |
"remote = %.7s)\n", oid_to_hex(base), oid_to_hex(local), | |
oid_to_hex(remote)); | |
changes = diff_tree_remote(o, base, remote, &num_changes); | |
diff_tree_local(o, changes, num_changes, base, local); | |
conflicts = merge_changes(o, changes, &num_changes, t); | |
free(changes); | |
if (o->verbosity >= 4) | |
printf(t->dirty ? | |
"Merge result: %i unmerged notes and a dirty notes tree\n" : | |
"Merge result: %i unmerged notes and a clean notes tree\n", | |
conflicts); | |
return conflicts ? -1 : 1; | |
} | |
int notes_merge(struct notes_merge_options *o, | |
struct notes_tree *local_tree, | |
struct object_id *result_oid) | |
{ | |
struct object_id local_oid, remote_oid; | |
struct commit *local, *remote; | |
struct commit_list *bases = NULL; | |
const struct object_id *base_oid, *base_tree_oid; | |
int result = 0; | |
assert(o->local_ref && o->remote_ref); | |
assert(!strcmp(o->local_ref, local_tree->ref)); | |
oidclr(result_oid); | |
trace_printf("notes_merge(o->local_ref = %s, o->remote_ref = %s)\n", | |
o->local_ref, o->remote_ref); | |
/* Dereference o->local_ref into local_sha1 */ | |
if (read_ref_full(o->local_ref, 0, &local_oid, NULL)) | |
die("Failed to resolve local notes ref '%s'", o->local_ref); | |
else if (!check_refname_format(o->local_ref, 0) && | |
is_null_oid(&local_oid)) | |
local = NULL; /* local_oid == null_oid indicates unborn ref */ | |
else if (!(local = lookup_commit_reference(o->repo, &local_oid))) | |
die("Could not parse local commit %s (%s)", | |
oid_to_hex(&local_oid), o->local_ref); | |
trace_printf("\tlocal commit: %.7s\n", oid_to_hex(&local_oid)); | |
/* Dereference o->remote_ref into remote_oid */ | |
if (get_oid(o->remote_ref, &remote_oid)) { | |
/* | |
* Failed to get remote_oid. If o->remote_ref looks like an | |
* unborn ref, perform the merge using an empty notes tree. | |
*/ | |
if (!check_refname_format(o->remote_ref, 0)) { | |
oidclr(&remote_oid); | |
remote = NULL; | |
} else { | |
die("Failed to resolve remote notes ref '%s'", | |
o->remote_ref); | |
} | |
} else if (!(remote = lookup_commit_reference(o->repo, &remote_oid))) { | |
die("Could not parse remote commit %s (%s)", | |
oid_to_hex(&remote_oid), o->remote_ref); | |
} | |
trace_printf("\tremote commit: %.7s\n", oid_to_hex(&remote_oid)); | |
if (!local && !remote) | |
die("Cannot merge empty notes ref (%s) into empty notes ref " | |
"(%s)", o->remote_ref, o->local_ref); | |
if (!local) { | |
/* result == remote commit */ | |
oidcpy(result_oid, &remote_oid); | |
goto found_result; | |
} | |
if (!remote) { | |
/* result == local commit */ | |
oidcpy(result_oid, &local_oid); | |
goto found_result; | |
} | |
assert(local && remote); | |
/* Find merge bases */ | |
bases = get_merge_bases(local, remote); | |
if (!bases) { | |
base_oid = null_oid(); | |
base_tree_oid = the_hash_algo->empty_tree; | |
if (o->verbosity >= 4) | |
printf("No merge base found; doing history-less merge\n"); | |
} else if (!bases->next) { | |
base_oid = &bases->item->object.oid; | |
base_tree_oid = get_commit_tree_oid(bases->item); | |
if (o->verbosity >= 4) | |
printf("One merge base found (%.7s)\n", | |
oid_to_hex(base_oid)); | |
} else { | |
/* TODO: How to handle multiple merge-bases? */ | |
base_oid = &bases->item->object.oid; | |
base_tree_oid = get_commit_tree_oid(bases->item); | |
if (o->verbosity >= 3) | |
printf("Multiple merge bases found. Using the first " | |
"(%.7s)\n", oid_to_hex(base_oid)); | |
} | |
if (o->verbosity >= 4) | |
printf("Merging remote commit %.7s into local commit %.7s with " | |
"merge-base %.7s\n", oid_to_hex(&remote->object.oid), | |
oid_to_hex(&local->object.oid), | |
oid_to_hex(base_oid)); | |
if (oideq(&remote->object.oid, base_oid)) { | |
/* Already merged; result == local commit */ | |
if (o->verbosity >= 2) | |
printf_ln("Already up to date."); | |
oidcpy(result_oid, &local->object.oid); | |
goto found_result; | |
} | |
if (oideq(&local->object.oid, base_oid)) { | |
/* Fast-forward; result == remote commit */ | |
if (o->verbosity >= 2) | |
printf("Fast-forward\n"); | |
oidcpy(result_oid, &remote->object.oid); | |
goto found_result; | |
} | |
result = merge_from_diffs(o, base_tree_oid, | |
get_commit_tree_oid(local), | |
get_commit_tree_oid(remote), local_tree); | |
if (result != 0) { /* non-trivial merge (with or without conflicts) */ | |
/* Commit (partial) result */ | |
struct commit_list *parents = NULL; | |
commit_list_insert(remote, &parents); /* LIFO order */ | |
commit_list_insert(local, &parents); | |
create_notes_commit(o->repo, local_tree, parents, o->commit_msg.buf, | |
o->commit_msg.len, result_oid); | |
} | |
found_result: | |
free_commit_list(bases); | |
strbuf_release(&(o->commit_msg)); | |
trace_printf("notes_merge(): result = %i, result_oid = %.7s\n", | |
result, oid_to_hex(result_oid)); | |
return result; | |
} | |
int notes_merge_commit(struct notes_merge_options *o, | |
struct notes_tree *partial_tree, | |
struct commit *partial_commit, | |
struct object_id *result_oid) | |
{ | |
/* | |
* Iterate through files in .git/NOTES_MERGE_WORKTREE and add all | |
* found notes to 'partial_tree'. Write the updated notes tree to | |
* the DB, and commit the resulting tree object while reusing the | |
* commit message and parents from 'partial_commit'. | |
* Finally store the new commit object OID into 'result_oid'. | |
*/ | |
DIR *dir; | |
struct dirent *e; | |
struct strbuf path = STRBUF_INIT; | |
const char *buffer = get_commit_buffer(partial_commit, NULL); | |
const char *msg = strstr(buffer, "\n\n"); | |
int baselen; | |
git_path_buf(&path, NOTES_MERGE_WORKTREE); | |
if (o->verbosity >= 3) | |
printf("Committing notes in notes merge worktree at %s\n", | |
path.buf); | |
if (!msg || msg[2] == '\0') | |
die("partial notes commit has empty message"); | |
msg += 2; | |
dir = opendir(path.buf); | |
if (!dir) | |
die_errno("could not open %s", path.buf); | |
strbuf_addch(&path, '/'); | |
baselen = path.len; | |
while ((e = readdir_skip_dot_and_dotdot(dir)) != NULL) { | |
struct stat st; | |
struct object_id obj_oid, blob_oid; | |
if (get_oid_hex(e->d_name, &obj_oid)) { | |
if (o->verbosity >= 3) | |
printf("Skipping non-SHA1 entry '%s%s'\n", | |
path.buf, e->d_name); | |
continue; | |
} | |
strbuf_addstr(&path, e->d_name); | |
/* write file as blob, and add to partial_tree */ | |
if (stat(path.buf, &st)) | |
die_errno("Failed to stat '%s'", path.buf); | |
if (index_path(o->repo->index, &blob_oid, path.buf, &st, HASH_WRITE_OBJECT)) | |
die("Failed to write blob object from '%s'", path.buf); | |
if (add_note(partial_tree, &obj_oid, &blob_oid, NULL)) | |
die("Failed to add resolved note '%s' to notes tree", | |
path.buf); | |
if (o->verbosity >= 4) | |
printf("Added resolved note for object %s: %s\n", | |
oid_to_hex(&obj_oid), oid_to_hex(&blob_oid)); | |
strbuf_setlen(&path, baselen); | |
} | |
create_notes_commit(o->repo, partial_tree, partial_commit->parents, msg, | |
strlen(msg), result_oid); | |
unuse_commit_buffer(partial_commit, buffer); | |
if (o->verbosity >= 4) | |
printf("Finalized notes merge commit: %s\n", | |
oid_to_hex(result_oid)); | |
strbuf_release(&path); | |
closedir(dir); | |
return 0; | |
} | |
int notes_merge_abort(struct notes_merge_options *o) | |
{ | |
/* | |
* Remove all files within .git/NOTES_MERGE_WORKTREE. We do not remove | |
* the .git/NOTES_MERGE_WORKTREE directory itself, since it might be | |
* the current working directory of the user. | |
*/ | |
struct strbuf buf = STRBUF_INIT; | |
int ret; | |
git_path_buf(&buf, NOTES_MERGE_WORKTREE); | |
if (o->verbosity >= 3) | |
printf("Removing notes merge worktree at %s/*\n", buf.buf); | |
ret = remove_dir_recursively(&buf, REMOVE_DIR_KEEP_TOPLEVEL); | |
strbuf_release(&buf); | |
return ret; | |
} |