static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
const char *name)
{
struct ref *ref;
struct object_id oid;
if (!get_oid_hex(name, &oid)) {
if (name[GIT_SHA1_HEXSZ] == ' ') {
/* <sha1> <ref>, find refname */
name += GIT_SHA1_HEXSZ + 1;
} else if (name[GIT_SHA1_HEXSZ] == '\0') {
; /* <sha1>, leave sha1 as name */
} else {
/* <ref>, clear cruft from oid */
oidclr(&oid);
}
} else {
/* <ref>, clear cruft from get_oid_hex */
oidclr(&oid);
}
ref = alloc_ref(name);
oidcpy(&ref->old_oid, &oid);
(*nr)++;
ALLOC_GROW(*sought, *nr, *alloc);
(*sought)[*nr - 1] = ref;
}
static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
const char *name)
{
struct ref *ref;
struct object_id oid;
const char *p;
if (!parse_oid_hex(name, &oid, &p)) {
if (*p == ' ') {
/* <oid> <ref>, find refname */
name = p + 1;
} else if (*p == '\0') {
; /* <oid>, leave oid as name */
} else {
/* <ref>, clear cruft from oid */
oidclr(&oid);
}
} else {
/* <ref>, clear cruft from get_oid_hex */
oidclr(&oid);
}
ref = alloc_ref(name);
oidcpy(&ref->old_oid, &oid);
(*nr)++;
ALLOC_GROW(*sought, *nr, *alloc);
(*sought)[*nr - 1] = ref;
}
static void fetch_symref(const char *path, char **symref, struct object_id *oid)
{
char *url = xstrfmt("%s%s", repo->url, path);
struct strbuf buffer = STRBUF_INIT;
const char *name;
if (http_get_strbuf(url, &buffer, NULL) != HTTP_OK)
die("Couldn't get %s for remote symref\n%s", url,
curl_errorstr);
free(url);
FREE_AND_NULL(*symref);
oidclr(oid);
if (buffer.len == 0)
return;
/* Cut off trailing newline. */
strbuf_rtrim(&buffer);
/* If it's a symref, set the refname; otherwise try for a sha1 */
if (skip_prefix(buffer.buf, "ref: ", &name)) {
*symref = xmemdupz(name, buffer.len - (name - buffer.buf));
} else {
get_oid_hex(buffer.buf, oid);
}
strbuf_release(&buffer);
}
static int show_modified(struct rev_info *revs,
const struct cache_entry *old_entry,
const struct cache_entry *new_entry,
int report_missing,
int cached, int match_missing)
{
unsigned int mode, oldmode;
const struct object_id *oid;
unsigned dirty_submodule = 0;
if (get_stat_data(new_entry, &oid, &mode, cached, match_missing,
&dirty_submodule, &revs->diffopt) < 0) {
if (report_missing)
diff_index_show_file(revs, "-", old_entry,
&old_entry->oid, 1, old_entry->ce_mode,
0);
return -1;
}
if (revs->combine_merges && !cached &&
(!oideq(oid, &old_entry->oid) || !oideq(&old_entry->oid, &new_entry->oid))) {
struct combine_diff_path *p;
int pathlen = ce_namelen(new_entry);
p = xmalloc(combine_diff_path_size(2, pathlen));
p->path = (char *) &p->parent[2];
p->next = NULL;
memcpy(p->path, new_entry->name, pathlen);
p->path[pathlen] = 0;
p->mode = mode;
oidclr(&p->oid);
memset(p->parent, 0, 2 * sizeof(struct combine_diff_parent));
p->parent[0].status = DIFF_STATUS_MODIFIED;
p->parent[0].mode = new_entry->ce_mode;
oidcpy(&p->parent[0].oid, &new_entry->oid);
p->parent[1].status = DIFF_STATUS_MODIFIED;
p->parent[1].mode = old_entry->ce_mode;
oidcpy(&p->parent[1].oid, &old_entry->oid);
show_combined_diff(p, 2, revs->dense_combined_merges, revs);
free(p);
return 0;
}
oldmode = old_entry->ce_mode;
if (mode == oldmode && oideq(oid, &old_entry->oid) && !dirty_submodule &&
!revs->diffopt.flags.find_copies_harder)
return 0;
diff_change(&revs->diffopt, oldmode, mode,
&old_entry->oid, oid, 1, !is_null_oid(oid),
old_entry->name, 0, dirty_submodule);
return 0;
}
static int merge_commit(struct notes_merge_options *o)
{
struct strbuf msg = STRBUF_INIT;
struct object_id oid, parent_oid;
struct notes_tree *t;
struct commit *partial;
struct pretty_print_context pretty_ctx;
void *local_ref_to_free;
int ret;
/*
* Read partial merge result from .git/NOTES_MERGE_PARTIAL,
* and target notes ref from .git/NOTES_MERGE_REF.
*/
if (get_oid("NOTES_MERGE_PARTIAL", &oid))
die(_("failed to read ref NOTES_MERGE_PARTIAL"));
else if (!(partial = lookup_commit_reference(&oid)))
die(_("could not find commit from NOTES_MERGE_PARTIAL."));
else if (parse_commit(partial))
die(_("could not parse commit from NOTES_MERGE_PARTIAL."));
if (partial->parents)
oidcpy(&parent_oid, &partial->parents->item->object.oid);
else
oidclr(&parent_oid);
t = xcalloc(1, sizeof(struct notes_tree));
init_notes(t, "NOTES_MERGE_PARTIAL", combine_notes_overwrite, 0);
o->local_ref = local_ref_to_free =
resolve_refdup("NOTES_MERGE_REF", 0, oid.hash, NULL);
if (!o->local_ref)
die(_("failed to resolve NOTES_MERGE_REF"));
if (notes_merge_commit(o, t, partial, &oid))
die(_("failed to finalize notes merge"));
/* Reuse existing commit message in reflog message */
memset(&pretty_ctx, 0, sizeof(pretty_ctx));
format_commit_message(partial, "%s", &msg, &pretty_ctx);
strbuf_trim(&msg);
strbuf_insert(&msg, 0, "notes: ", 7);
update_ref(msg.buf, o->local_ref, oid.hash,
is_null_oid(&parent_oid) ? NULL : parent_oid.hash,
0, UPDATE_REFS_DIE_ON_ERR);
free_notes(t);
strbuf_release(&msg);
ret = merge_abort(o);
free(local_ref_to_free);
return ret;
}
static void generate_id_list(int stable)
{
struct object_id oid, n, result;
int patchlen;
struct strbuf line_buf = STRBUF_INIT;
oidclr(&oid);
while (!feof(stdin)) {
patchlen = get_one_patchid(&n, &result, &line_buf, stable);
flush_current_id(patchlen, &oid, &result);
oidcpy(&oid, &n);
}
strbuf_release(&line_buf);
}
/*
* Fill the blob_sha1 field of an origin if it hasn't, so that later
* call to fill_origin_blob() can use it to locate the data. blob_sha1
* for an origin is also used to pass the blame for the entire file to
* the parent to detect the case where a child's blob is identical to
* that of its parent's.
*
* This also fills origin->mode for corresponding tree path.
*/
static int fill_blob_sha1_and_mode(struct blame_origin *origin)
{
if (!is_null_oid(&origin->blob_oid))
return 0;
if (get_tree_entry(&origin->commit->object.oid, origin->path, &origin->blob_oid, &origin->mode))
goto error_out;
if (oid_object_info(the_repository, &origin->blob_oid, NULL) != OBJ_BLOB)
goto error_out;
return 0;
error_out:
oidclr(&origin->blob_oid);
origin->mode = S_IFINVALID;
return -1;
}
static int rollback_is_safe(void)
{
struct strbuf sb = STRBUF_INIT;
struct object_id expected_head, actual_head;
if (strbuf_read_file(&sb, git_path_abort_safety_file(), 0) >= 0) {
strbuf_trim(&sb);
if (get_oid_hex(sb.buf, &expected_head)) {
strbuf_release(&sb);
die(_("could not parse %s"), git_path_abort_safety_file());
}
strbuf_release(&sb);
}
else if (errno == ENOENT)
oidclr(&expected_head);
else
die_errno(_("could not read '%s'"), git_path_abort_safety_file());
if (get_oid("HEAD", &actual_head))
oidclr(&actual_head);
return !oidcmp(&actual_head, &expected_head);
}
int remove_note(struct notes_tree *t, const unsigned char *object_sha1)
{
struct leaf_node l;
if (!t)
t = &default_notes_tree;
assert(t->initialized);
hashcpy(l.key_oid.hash, object_sha1);
oidclr(&l.val_oid);
note_tree_remove(t, t->root, 0, &l);
if (is_null_oid(&l.val_oid)) /* no note was removed */
return 1;
t->dirty = 1;
return 0;
}
static int check_ref_valid(struct object_id *object,
struct object_id *prev,
struct strbuf *ref,
int force)
{
strbuf_reset(ref);
strbuf_addf(ref, "%s%s", git_replace_ref_base, oid_to_hex(object));
if (check_refname_format(ref->buf, 0))
return error("'%s' is not a valid ref name.", ref->buf);
if (read_ref(ref->buf, prev))
oidclr(prev);
else if (!force)
return error("replace ref '%s' already exists", ref->buf);
return 0;
}
static int gitmodule_oid_from_commit(const struct object_id *treeish_name,
struct object_id *gitmodules_oid,
struct strbuf *rev)
{
int ret = 0;
if (is_null_oid(treeish_name)) {
oidclr(gitmodules_oid);
return 1;
}
strbuf_addf(rev, "%s:.gitmodules", oid_to_hex(treeish_name));
if (get_oid(rev->buf, gitmodules_oid) >= 0)
ret = 1;
return ret;
}
static void print_bases(struct base_tree_info *bases)
{
int i;
/* Only do this once, either for the cover or for the first one */
if (is_null_oid(&bases->base_commit))
return;
/* Show the base commit */
printf("base-commit: %s\n", oid_to_hex(&bases->base_commit));
/* Show the prerequisite patches */
for (i = bases->nr_patch_id - 1; i >= 0; i--)
printf("prerequisite-patch-id: %s\n", oid_to_hex(&bases->patch_id[i]));
free(bases->patch_id);
bases->nr_patch_id = 0;
bases->alloc_patch_id = 0;
oidclr(&bases->base_commit);
}
void init_notes(struct notes_tree *t, const char *notes_ref,
combine_notes_fn combine_notes, int flags)
{
struct object_id oid, object_oid;
unsigned mode;
struct leaf_node root_tree;
if (!t)
t = &default_notes_tree;
assert(!t->initialized);
if (!notes_ref)
notes_ref = default_notes_ref();
if (!combine_notes)
combine_notes = combine_notes_concatenate;
t->root = (struct int_node *) xcalloc(1, sizeof(struct int_node));
t->first_non_note = NULL;
t->prev_non_note = NULL;
t->ref = xstrdup_or_null(notes_ref);
t->update_ref = (flags & NOTES_INIT_WRITABLE) ? t->ref : NULL;
t->combine_notes = combine_notes;
t->initialized = 1;
t->dirty = 0;
if (flags & NOTES_INIT_EMPTY || !notes_ref ||
get_oid_treeish(notes_ref, &object_oid))
return;
if (flags & NOTES_INIT_WRITABLE && read_ref(notes_ref, &object_oid))
die("Cannot use notes ref %s", notes_ref);
if (get_tree_entry(&object_oid, "", &oid, &mode))
die("Failed to read notes tree referenced by %s (%s)",
notes_ref, oid_to_hex(&object_oid));
oidclr(&root_tree.key_oid);
oidcpy(&root_tree.val_oid, &oid);
load_subtree(t, &root_tree, t->root, 0);
}
int run_diff_files(struct rev_info *revs, unsigned int option)
{
int entries, i;
int diff_unmerged_stage = revs->max_count;
unsigned ce_option = ((option & DIFF_RACY_IS_MODIFIED)
? CE_MATCH_RACY_IS_DIRTY : 0);
uint64_t start = getnanotime();
struct index_state *istate = revs->diffopt.repo->index;
diff_set_mnemonic_prefix(&revs->diffopt, "i/", "w/");
if (diff_unmerged_stage < 0)
diff_unmerged_stage = 2;
entries = istate->cache_nr;
for (i = 0; i < entries; i++) {
unsigned int oldmode, newmode;
struct cache_entry *ce = istate->cache[i];
int changed;
unsigned dirty_submodule = 0;
const struct object_id *old_oid, *new_oid;
if (diff_can_quit_early(&revs->diffopt))
break;
if (!ce_path_match(istate, ce, &revs->prune_data, NULL))
continue;
if (ce_stage(ce)) {
struct combine_diff_path *dpath;
struct diff_filepair *pair;
unsigned int wt_mode = 0;
int num_compare_stages = 0;
size_t path_len;
struct stat st;
path_len = ce_namelen(ce);
dpath = xmalloc(combine_diff_path_size(5, path_len));
dpath->path = (char *) &(dpath->parent[5]);
dpath->next = NULL;
memcpy(dpath->path, ce->name, path_len);
dpath->path[path_len] = '\0';
oidclr(&dpath->oid);
memset(&(dpath->parent[0]), 0,
sizeof(struct combine_diff_parent)*5);
changed = check_removed(ce, &st);
if (!changed)
wt_mode = ce_mode_from_stat(ce, st.st_mode);
else {
if (changed < 0) {
perror(ce->name);
continue;
}
wt_mode = 0;
}
dpath->mode = wt_mode;
while (i < entries) {
struct cache_entry *nce = istate->cache[i];
int stage;
if (strcmp(ce->name, nce->name))
break;
/* Stage #2 (ours) is the first parent,
* stage #3 (theirs) is the second.
*/
stage = ce_stage(nce);
if (2 <= stage) {
int mode = nce->ce_mode;
num_compare_stages++;
oidcpy(&dpath->parent[stage - 2].oid,
&nce->oid);
dpath->parent[stage-2].mode = ce_mode_from_stat(nce, mode);
dpath->parent[stage-2].status =
DIFF_STATUS_MODIFIED;
}
/* diff against the proper unmerged stage */
if (stage == diff_unmerged_stage)
ce = nce;
i++;
}
/*
* Compensate for loop update
*/
i--;
if (revs->combine_merges && num_compare_stages == 2) {
show_combined_diff(dpath, 2,
revs->dense_combined_merges,
revs);
free(dpath);
continue;
}
FREE_AND_NULL(dpath);
/*
* Show the diff for the 'ce' if we found the one
* from the desired stage.
*/
pair = diff_unmerge(&revs->diffopt, ce->name);
if (wt_mode)
pair->two->mode = wt_mode;
if (ce_stage(ce) != diff_unmerged_stage)
continue;
}
if (ce_uptodate(ce) || ce_skip_worktree(ce))
continue;
/* If CE_VALID is set, don't look at workdir for file removal */
if (ce->ce_flags & CE_VALID) {
changed = 0;
newmode = ce->ce_mode;
} else {
struct stat st;
changed = check_removed(ce, &st);
if (changed) {
if (changed < 0) {
perror(ce->name);
continue;
}
diff_addremove(&revs->diffopt, '-', ce->ce_mode,
&ce->oid,
!is_null_oid(&ce->oid),
ce->name, 0);
continue;
} else if (revs->diffopt.ita_invisible_in_index &&
ce_intent_to_add(ce)) {
diff_addremove(&revs->diffopt, '+', ce->ce_mode,
the_hash_algo->empty_tree, 0,
ce->name, 0);
continue;
}
changed = match_stat_with_submodule(&revs->diffopt, ce, &st,
ce_option, &dirty_submodule);
newmode = ce_mode_from_stat(ce, st.st_mode);
}
if (!changed && !dirty_submodule) {
ce_mark_uptodate(ce);
mark_fsmonitor_valid(ce);
if (!revs->diffopt.flags.find_copies_harder)
continue;
}
oldmode = ce->ce_mode;
old_oid = &ce->oid;
new_oid = changed ? &null_oid : &ce->oid;
diff_change(&revs->diffopt, oldmode, newmode,
old_oid, new_oid,
!is_null_oid(old_oid),
!is_null_oid(new_oid),
ce->name, 0, dirty_submodule);
}
diffcore_std(&revs->diffopt);
diff_flush(&revs->diffopt);
trace_performance_since(start, "diff-files");
return 0;
}
int cmd_pull(int argc, const char **argv, const char *prefix)
{
const char *repo, **refspecs;
struct oid_array merge_heads = OID_ARRAY_INIT;
struct object_id orig_head, curr_head;
struct object_id rebase_fork_point;
int autostash;
if (!getenv("GIT_REFLOG_ACTION"))
set_reflog_message(argc, argv);
git_config(git_pull_config, NULL);
argc = parse_options(argc, argv, prefix, pull_options, pull_usage, 0);
parse_repo_refspecs(argc, argv, &repo, &refspecs);
if (!opt_ff)
opt_ff = xstrdup_or_null(config_get_ff());
if (opt_rebase < 0)
opt_rebase = config_get_rebase();
if (read_cache_unmerged())
die_resolve_conflict("pull");
if (file_exists(git_path_merge_head(the_repository)))
die_conclude_merge();
if (get_oid("HEAD", &orig_head))
oidclr(&orig_head);
if (!opt_rebase && opt_autostash != -1)
die(_("--[no-]autostash option is only valid with --rebase."));
autostash = config_autostash;
if (opt_rebase) {
if (opt_autostash != -1)
autostash = opt_autostash;
if (is_null_oid(&orig_head) && !is_cache_unborn())
die(_("Updating an unborn branch with changes added to the index."));
if (!autostash)
require_clean_work_tree(N_("pull with rebase"),
_("please commit or stash them."), 1, 0);
if (get_rebase_fork_point(&rebase_fork_point, repo, *refspecs))
oidclr(&rebase_fork_point);
}
if (run_fetch(repo, refspecs))
return 1;
if (opt_dry_run)
return 0;
if (get_oid("HEAD", &curr_head))
oidclr(&curr_head);
if (!is_null_oid(&orig_head) && !is_null_oid(&curr_head) &&
!oideq(&orig_head, &curr_head)) {
/*
* The fetch involved updating the current branch.
*
* The working tree and the index file are still based on
* orig_head commit, but we are merging into curr_head.
* Update the working tree to match curr_head.
*/
warning(_("fetch updated the current branch head.\n"
"fast-forwarding your working tree from\n"
"commit %s."), oid_to_hex(&orig_head));
if (checkout_fast_forward(&orig_head, &curr_head, 0))
die(_("Cannot fast-forward your working tree.\n"
"After making sure that you saved anything precious from\n"
"$ git diff %s\n"
"output, run\n"
"$ git reset --hard\n"
"to recover."), oid_to_hex(&orig_head));
}
get_merge_heads(&merge_heads);
if (!merge_heads.nr)
die_no_merge_candidates(repo, refspecs);
if (is_null_oid(&orig_head)) {
if (merge_heads.nr > 1)
die(_("Cannot merge multiple branches into empty head."));
return pull_into_void(merge_heads.oid, &curr_head);
}
if (opt_rebase && merge_heads.nr > 1)
die(_("Cannot rebase onto multiple branches."));
if (opt_rebase) {
int ret = 0;
if ((recurse_submodules == RECURSE_SUBMODULES_ON ||
recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) &&
submodule_touches_in_range(&rebase_fork_point, &curr_head))
die(_("cannot rebase with locally recorded submodule modifications"));
if (!autostash) {
struct commit_list *list = NULL;
struct commit *merge_head, *head;
head = lookup_commit_reference(the_repository,
&orig_head);
commit_list_insert(head, &list);
merge_head = lookup_commit_reference(the_repository,
&merge_heads.oid[0]);
if (is_descendant_of(merge_head, list)) {
/* we can fast-forward this without invoking rebase */
opt_ff = "--ff-only";
ret = run_merge();
}
}
ret = run_rebase(&curr_head, merge_heads.oid, &rebase_fork_point);
if (!ret && (recurse_submodules == RECURSE_SUBMODULES_ON ||
recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND))
ret = rebase_submodules();
return ret;
} else {
int ret = run_merge();
if (!ret && (recurse_submodules == RECURSE_SUBMODULES_ON ||
recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND))
ret = update_submodules();
return ret;
}
}
int cmd_rm(int argc, const char **argv, const char *prefix)
{
int i;
struct pathspec pathspec;
char *seen;
git_config(git_default_config, NULL);
argc = parse_options(argc, argv, prefix, builtin_rm_options,
builtin_rm_usage, 0);
if (!argc)
usage_with_options(builtin_rm_usage, builtin_rm_options);
if (!index_only)
setup_work_tree();
hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
if (read_cache() < 0)
die(_("index file corrupt"));
parse_pathspec(&pathspec, 0,
PATHSPEC_PREFER_CWD,
prefix, argv);
refresh_index(&the_index, REFRESH_QUIET, &pathspec, NULL, NULL);
seen = xcalloc(pathspec.nr, 1);
for (i = 0; i < active_nr; i++) {
const struct cache_entry *ce = active_cache[i];
if (!ce_path_match(ce, &pathspec, seen))
continue;
ALLOC_GROW(list.entry, list.nr + 1, list.alloc);
list.entry[list.nr].name = xstrdup(ce->name);
list.entry[list.nr].is_submodule = S_ISGITLINK(ce->ce_mode);
if (list.entry[list.nr++].is_submodule &&
!is_staging_gitmodules_ok(&the_index))
die (_("Please stage your changes to .gitmodules or stash them to proceed"));
}
if (pathspec.nr) {
const char *original;
int seen_any = 0;
for (i = 0; i < pathspec.nr; i++) {
original = pathspec.items[i].original;
if (!seen[i]) {
if (!ignore_unmatch) {
die(_("pathspec '%s' did not match any files"),
original);
}
}
else {
seen_any = 1;
}
if (!recursive && seen[i] == MATCHED_RECURSIVELY)
die(_("not removing '%s' recursively without -r"),
*original ? original : ".");
}
if (!seen_any)
exit(0);
}
if (!index_only)
submodules_absorb_gitdir_if_needed(prefix);
/*
* If not forced, the file, the index and the HEAD (if exists)
* must match; but the file can already been removed, since
* this sequence is a natural "novice" way:
*
* rm F; git rm F
*
* Further, if HEAD commit exists, "diff-index --cached" must
* report no changes unless forced.
*/
if (!force) {
struct object_id oid;
if (get_oid("HEAD", &oid))
oidclr(&oid);
if (check_local_mod(&oid, index_only))
exit(1);
}
/*
* First remove the names from the index: we won't commit
* the index unless all of them succeed.
*/
for (i = 0; i < list.nr; i++) {
const char *path = list.entry[i].name;
if (!quiet)
printf("rm '%s'\n", path);
if (remove_file_from_cache(path))
die(_("git rm: unable to remove %s"), path);
}
if (show_only)
return 0;
/*
* Then, unless we used "--cached", remove the filenames from
* the workspace. If we fail to remove the first one, we
* abort the "git rm" (but once we've successfully removed
* any file at all, we'll go ahead and commit to it all:
* by then we've already committed ourselves and can't fail
* in the middle)
*/
if (!index_only) {
int removed = 0, gitmodules_modified = 0;
struct strbuf buf = STRBUF_INIT;
for (i = 0; i < list.nr; i++) {
const char *path = list.entry[i].name;
if (list.entry[i].is_submodule) {
strbuf_reset(&buf);
strbuf_addstr(&buf, path);
if (remove_dir_recursively(&buf, 0))
die(_("could not remove '%s'"), path);
removed = 1;
if (!remove_path_from_gitmodules(path))
gitmodules_modified = 1;
continue;
}
if (!remove_path(path)) {
removed = 1;
continue;
}
if (!removed)
die_errno("git rm: '%s'", path);
}
strbuf_release(&buf);
if (gitmodules_modified)
stage_updated_gitmodules(&the_index);
}
if (active_cache_changed) {
if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
die(_("Unable to write new index file"));
}
return 0;
}
static int get_one_patchid(struct object_id *next_oid, struct object_id *result,
struct strbuf *line_buf, int stable)
{
int patchlen = 0, found_next = 0;
int before = -1, after = -1;
git_SHA_CTX ctx;
git_SHA1_Init(&ctx);
oidclr(result);
while (strbuf_getwholeline(line_buf, stdin, '\n') != EOF) {
char *line = line_buf->buf;
const char *p = line;
int len;
if (!skip_prefix(line, "diff-tree ", &p) &&
!skip_prefix(line, "commit ", &p) &&
!skip_prefix(line, "From ", &p) &&
starts_with(line, "\\ ") && 12 < strlen(line))
continue;
if (!get_oid_hex(p, next_oid)) {
found_next = 1;
break;
}
/* Ignore commit comments */
if (!patchlen && !starts_with(line, "diff "))
continue;
/* Parsing diff header? */
if (before == -1) {
if (starts_with(line, "index "))
continue;
else if (starts_with(line, "--- "))
before = after = 1;
else if (!isalpha(line[0]))
break;
}
/* Looking for a valid hunk header? */
if (before == 0 && after == 0) {
if (starts_with(line, "@@ -")) {
/* Parse next hunk, but ignore line numbers. */
scan_hunk_header(line, &before, &after);
continue;
}
/* Split at the end of the patch. */
if (!starts_with(line, "diff "))
break;
/* Else we're parsing another header. */
if (stable)
flush_one_hunk(result, &ctx);
before = after = -1;
}
/* If we get here, we're inside a hunk. */
if (line[0] == '-' || line[0] == ' ')
before--;
if (line[0] == '+' || line[0] == ' ')
after--;
/* Compute the sha without whitespace */
len = remove_space(line);
patchlen += len;
git_SHA1_Update(&ctx, line, len);
}
if (!found_next)
oidclr(next_oid);
flush_one_hunk(result, &ctx);
return patchlen;
}
int run_diff_files(struct rev_info *revs, unsigned int option)
{
int entries, i;
int diff_unmerged_stage = revs->max_count;
unsigned ce_option = ((option & DIFF_RACY_IS_MODIFIED)
? CE_MATCH_RACY_IS_DIRTY : 0);
diff_set_mnemonic_prefix(&revs->diffopt, "i/", "w/");
if (diff_unmerged_stage < 0)
diff_unmerged_stage = 2;
entries = active_nr;
for (i = 0; i < entries; i++) {
unsigned int oldmode, newmode;
struct cache_entry *ce = active_cache[i];
int changed;
unsigned dirty_submodule = 0;
const unsigned char *old_sha1, *new_sha1;
if (diff_can_quit_early(&revs->diffopt))
break;
if (!ce_path_match(ce, &revs->prune_data, NULL))
continue;
if (ce_stage(ce)) {
struct combine_diff_path *dpath;
struct diff_filepair *pair;
unsigned int wt_mode = 0;
int num_compare_stages = 0;
size_t path_len;
struct stat st;
path_len = ce_namelen(ce);
dpath = xmalloc(combine_diff_path_size(5, path_len));
dpath->path = (char *) &(dpath->parent[5]);
dpath->next = NULL;
memcpy(dpath->path, ce->name, path_len);
dpath->path[path_len] = '\0';
oidclr(&dpath->oid);
memset(&(dpath->parent[0]), 0,
sizeof(struct combine_diff_parent)*5);
changed = check_removed(ce, &st);
if (!changed)
wt_mode = ce_mode_from_stat(ce, st.st_mode);
else {
if (changed < 0) {
perror(ce->name);
continue;
}
wt_mode = 0;
}
dpath->mode = wt_mode;
while (i < entries) {
struct cache_entry *nce = active_cache[i];
int stage;
if (strcmp(ce->name, nce->name))
break;
/* Stage #2 (ours) is the first parent,
* stage #3 (theirs) is the second.
*/
stage = ce_stage(nce);
if (2 <= stage) {
int mode = nce->ce_mode;
num_compare_stages++;
hashcpy(dpath->parent[stage-2].oid.hash, nce->sha1);
dpath->parent[stage-2].mode = ce_mode_from_stat(nce, mode);
dpath->parent[stage-2].status =
DIFF_STATUS_MODIFIED;
}
/* diff against the proper unmerged stage */
if (stage == diff_unmerged_stage)
ce = nce;
i++;
}
/*
* Compensate for loop update
*/
i--;
if (revs->combine_merges && num_compare_stages == 2) {
show_combined_diff(dpath, 2,
revs->dense_combined_merges,
revs);
free(dpath);
continue;
}
free(dpath);
dpath = NULL;
/*
* Show the diff for the 'ce' if we found the one
* from the desired stage.
*/
pair = diff_unmerge(&revs->diffopt, ce->name);
if (wt_mode)
pair->two->mode = wt_mode;
if (ce_stage(ce) != diff_unmerged_stage)
continue;
}
if (ce_uptodate(ce) || ce_skip_worktree(ce))
continue;
/* If CE_VALID is set, don't look at workdir for file removal */
if (ce->ce_flags & CE_VALID) {
changed = 0;
newmode = ce->ce_mode;
} else {
struct stat st;
changed = check_removed(ce, &st);
if (changed) {
if (changed < 0) {
perror(ce->name);
continue;
}
diff_addremove(&revs->diffopt, '-', ce->ce_mode,
ce->sha1, !is_null_sha1(ce->sha1),
ce->name, 0);
continue;
}
changed = match_stat_with_submodule(&revs->diffopt, ce, &st,
ce_option, &dirty_submodule);
newmode = ce_mode_from_stat(ce, st.st_mode);
}
if (!changed && !dirty_submodule) {
ce_mark_uptodate(ce);
if (!DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER))
continue;
}
oldmode = ce->ce_mode;
old_sha1 = ce->sha1;
new_sha1 = changed ? null_sha1 : ce->sha1;
diff_change(&revs->diffopt, oldmode, newmode,
old_sha1, new_sha1,
!is_null_sha1(old_sha1),
!is_null_sha1(new_sha1),
ce->name, 0, dirty_submodule);
}
diffcore_std(&revs->diffopt);
diff_flush(&revs->diffopt);
return 0;
}
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(&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(&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 = &bases->item->tree->object.oid;
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 = &bases->item->tree->object.oid;
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 (!oidcmp(&remote->object.oid, base_oid)) {
/* Already merged; result == local commit */
if (o->verbosity >= 2)
printf("Already up to date!\n");
oidcpy(result_oid, &local->object.oid);
goto found_result;
}
if (!oidcmp(&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, &local->tree->object.oid,
&remote->tree->object.oid, 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(local_tree, parents,
o->commit_msg.buf, o->commit_msg.len,
result_oid->hash);
}
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;
}
/*
* Move the iterator to the next record in the snapshot, without
* respect for whether the record is actually required by the current
* iteration. Adjust the fields in `iter` and return `ITER_OK` or
* `ITER_DONE`. This function does not free the iterator in the case
* of `ITER_DONE`.
*/
static int next_record(struct packed_ref_iterator *iter)
{
const char *p = iter->pos, *eol;
strbuf_reset(&iter->refname_buf);
if (iter->pos == iter->eof)
return ITER_DONE;
iter->base.flags = REF_ISPACKED;
if (iter->eof - p < GIT_SHA1_HEXSZ + 2 ||
parse_oid_hex(p, &iter->oid, &p) ||
!isspace(*p++))
die_invalid_line(iter->snapshot->refs->path,
iter->pos, iter->eof - iter->pos);
eol = memchr(p, '\n', iter->eof - p);
if (!eol)
die_unterminated_line(iter->snapshot->refs->path,
iter->pos, iter->eof - iter->pos);
strbuf_add(&iter->refname_buf, p, eol - p);
iter->base.refname = iter->refname_buf.buf;
if (check_refname_format(iter->base.refname, REFNAME_ALLOW_ONELEVEL)) {
if (!refname_is_safe(iter->base.refname))
die("packed refname is dangerous: %s",
iter->base.refname);
oidclr(&iter->oid);
iter->base.flags |= REF_BAD_NAME | REF_ISBROKEN;
}
if (iter->snapshot->peeled == PEELED_FULLY ||
(iter->snapshot->peeled == PEELED_TAGS &&
starts_with(iter->base.refname, "refs/tags/")))
iter->base.flags |= REF_KNOWS_PEELED;
iter->pos = eol + 1;
if (iter->pos < iter->eof && *iter->pos == '^') {
p = iter->pos + 1;
if (iter->eof - p < GIT_SHA1_HEXSZ + 1 ||
parse_oid_hex(p, &iter->peeled, &p) ||
*p++ != '\n')
die_invalid_line(iter->snapshot->refs->path,
iter->pos, iter->eof - iter->pos);
iter->pos = p;
/*
* Regardless of what the file header said, we
* definitely know the value of *this* reference. But
* we suppress it if the reference is broken:
*/
if ((iter->base.flags & REF_ISBROKEN)) {
oidclr(&iter->peeled);
iter->base.flags &= ~REF_KNOWS_PEELED;
} else {
iter->base.flags |= REF_KNOWS_PEELED;
}
} else {
oidclr(&iter->peeled);
}
return ITER_OK;
}
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));
diff_setup(&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(!oidcmp(&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 (!oidcmp(&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) ||
!oidcmp(&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(!oidcmp(&p->one->oid, &mp->base));
assert(!oidcmp(&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);
}
