static void prime_cache_tree_rec(struct cache_tree *it, struct tree *tree)
{
struct tree_desc desc;
struct name_entry entry;
int cnt;
hashcpy(it->sha1, tree->object.sha1);
init_tree_desc(&desc, tree->buffer, tree->size);
cnt = 0;
while (tree_entry(&desc, &entry)) {
if (!S_ISDIR(entry.mode))
cnt++;
else {
struct cache_tree_sub *sub;
struct tree *subtree = lookup_tree(entry.sha1);
if (!subtree->object.parsed)
parse_tree(subtree);
sub = cache_tree_sub(it, entry.path);
sub->cache_tree = cache_tree();
prime_cache_tree_rec(sub->cache_tree, subtree);
cnt += sub->cache_tree->entry_count;
}
}
it->entry_count = cnt;
}
static int process_tree(struct walker *walker, struct tree *tree)
{
struct tree_desc desc;
struct name_entry entry;
if (parse_tree(tree))
return -1;
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
struct object *obj = NULL;
/* submodule commits are not stored in the superproject */
if (S_ISGITLINK(entry.mode))
continue;
if (S_ISDIR(entry.mode)) {
struct tree *tree = lookup_tree(entry.sha1);
if (tree)
obj = &tree->object;
}
else {
struct blob *blob = lookup_blob(entry.sha1);
if (blob)
obj = &blob->object;
}
if (!obj || process(walker, obj))
return -1;
}
free(tree->buffer);
tree->buffer = NULL;
tree->size = 0;
tree->object.parsed = 0;
return 0;
}
struct tree *write_tree_from_memory(struct merge_options *o)
{
struct tree *result = NULL;
if (unmerged_cache()) {
int i;
fprintf(stderr, "BUG: There are unmerged index entries:\n");
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
if (ce_stage(ce))
fprintf(stderr, "BUG: %d %.*s", ce_stage(ce),
(int)ce_namelen(ce), ce->name);
}
die("Bug in merge-recursive.c");
}
if (!active_cache_tree)
active_cache_tree = cache_tree();
if (!cache_tree_fully_valid(active_cache_tree) &&
cache_tree_update(active_cache_tree,
active_cache, active_nr, 0, 0) < 0)
die("error building trees");
result = lookup_tree(active_cache_tree->sha1);
return result;
}
struct object *parse_object(unsigned char *sha1)
{
unsigned long mapsize;
void *map = map_sha1_file(sha1, &mapsize);
if (map) {
char type[100];
unsigned long size;
void *buffer = unpack_sha1_file(map, mapsize, type, &size);
if (!buffer)
return NULL;
if (check_sha1_signature(sha1, buffer, size, type) < 0)
printf("sha1 mismatch %s\n", sha1_to_hex(sha1));
munmap(map, mapsize);
if (!strcmp(type, "blob")) {
struct blob *ret = lookup_blob(sha1);
parse_blob(ret);
return &ret->object;
} else if (!strcmp(type, "tree")) {
struct tree *ret = lookup_tree(sha1);
parse_tree(ret);
return &ret->object;
} else if (!strcmp(type, "commit")) {
struct commit *ret = lookup_commit(sha1);
parse_commit(ret);
return &ret->object;
} else if (!strcmp(type, "tag")) {
struct tag *ret = lookup_tag(sha1);
parse_tag(ret);
return &ret->object;
} else {
return NULL;
}
}
return NULL;
}
struct tree *write_tree_from_memory(struct merge_options *o)
{
struct tree *result = NULL;
if (unmerged_cache()) {
int i;
output(o, 0, "There are unmerged index entries:");
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
if (ce_stage(ce))
output(o, 0, "%d %.*s", ce_stage(ce), ce_namelen(ce), ce->name);
}
return NULL;
}
if (!active_cache_tree)
active_cache_tree = cache_tree();
if (!cache_tree_fully_valid(active_cache_tree) &&
cache_tree_update(active_cache_tree,
active_cache, active_nr, 0, 0) < 0)
die("error building trees");
result = lookup_tree(active_cache_tree->sha1);
return result;
}
static int fsck_walk_tree(struct tree *tree, fsck_walk_func walk, void *data)
{
struct tree_desc desc;
struct name_entry entry;
int res = 0;
if (parse_tree(tree))
return -1;
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
int result;
if (S_ISGITLINK(entry.mode))
continue;
if (S_ISDIR(entry.mode))
result = walk(&lookup_tree(entry.sha1)->object, OBJ_TREE, data);
else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode))
result = walk(&lookup_blob(entry.sha1)->object, OBJ_BLOB, data);
else {
result = error("in tree %s: entry %s has bad mode %.6o\n",
sha1_to_hex(tree->object.sha1), entry.path, entry.mode);
}
if (result < 0)
return result;
if (!res)
res = result;
}
return res;
}
int parse_tag_buffer(struct tag *item, const void *data, unsigned long size)
{
unsigned char sha1[20];
char type[20];
const char *bufptr = data;
const char *tail = bufptr + size;
const char *nl;
if (item->object.parsed)
return 0;
item->object.parsed = 1;
if (size < 64)
return -1;
if (memcmp("object ", bufptr, 7) || get_sha1_hex(bufptr + 7, sha1) || bufptr[47] != '\n')
return -1;
bufptr += 48; /* "object " + sha1 + "\n" */
if (!starts_with(bufptr, "type "))
return -1;
bufptr += 5;
nl = memchr(bufptr, '\n', tail - bufptr);
if (!nl || sizeof(type) <= (nl - bufptr))
return -1;
memcpy(type, bufptr, nl - bufptr);
type[nl - bufptr] = '\0';
bufptr = nl + 1;
if (!strcmp(type, blob_type)) {
item->tagged = &lookup_blob(sha1)->object;
} else if (!strcmp(type, tree_type)) {
item->tagged = &lookup_tree(sha1)->object;
} else if (!strcmp(type, commit_type)) {
item->tagged = &lookup_commit(sha1)->object;
} else if (!strcmp(type, tag_type)) {
item->tagged = &lookup_tag(sha1)->object;
} else {
error("Unknown type %s", type);
item->tagged = NULL;
}
if (bufptr + 4 < tail && starts_with(bufptr, "tag "))
; /* good */
else
return -1;
bufptr += 4;
nl = memchr(bufptr, '\n', tail - bufptr);
if (!nl)
return -1;
item->tag = xmemdupz(bufptr, nl - bufptr);
bufptr = nl + 1;
if (bufptr + 7 < tail && starts_with(bufptr, "tagger "))
item->date = parse_tag_date(bufptr, tail);
else
item->date = 0;
return 0;
}
int parse_tag_buffer(struct tag *item, const void *data, unsigned long size)
{
struct object_id oid;
char type[20];
const char *bufptr = data;
const char *tail = bufptr + size;
const char *nl;
if (item->object.parsed)
return 0;
item->object.parsed = 1;
if (size < GIT_SHA1_HEXSZ + 24)
return -1;
if (memcmp("object ", bufptr, 7) || parse_oid_hex(bufptr + 7, &oid, &bufptr) || *bufptr++ != '\n')
return -1;
if (!starts_with(bufptr, "type "))
return -1;
bufptr += 5;
nl = memchr(bufptr, '\n', tail - bufptr);
if (!nl || sizeof(type) <= (nl - bufptr))
return -1;
memcpy(type, bufptr, nl - bufptr);
type[nl - bufptr] = '\0';
bufptr = nl + 1;
if (!strcmp(type, blob_type)) {
item->tagged = (struct object *)lookup_blob(&oid);
} else if (!strcmp(type, tree_type)) {
item->tagged = (struct object *)lookup_tree(&oid);
} else if (!strcmp(type, commit_type)) {
item->tagged = (struct object *)lookup_commit(&oid);
} else if (!strcmp(type, tag_type)) {
item->tagged = (struct object *)lookup_tag(&oid);
} else {
error("Unknown type %s", type);
item->tagged = NULL;
}
if (bufptr + 4 < tail && starts_with(bufptr, "tag "))
; /* good */
else
return -1;
bufptr += 4;
nl = memchr(bufptr, '\n', tail - bufptr);
if (!nl)
return -1;
item->tag = xmemdupz(bufptr, nl - bufptr);
bufptr = nl + 1;
if (bufptr + 7 < tail && starts_with(bufptr, "tagger "))
item->date = parse_tag_date(bufptr, tail);
else
item->date = 0;
return 0;
}
static struct tree *shift_tree_object(struct tree *one, struct tree *two)
{
unsigned char shifted[20];
/*
* NEEDSWORK: this limits the recursion depth to hardcoded
* value '2' to avoid excessive overhead.
*/
shift_tree(one->object.sha1, two->object.sha1, shifted, 2);
if (!hashcmp(two->object.sha1, shifted))
return two;
return lookup_tree(shifted);
}
struct object *parse_object_buffer(const struct object_id *oid, enum object_type type, unsigned long size, void *buffer, int *eaten_p)
{
struct object *obj;
*eaten_p = 0;
obj = NULL;
if (type == OBJ_BLOB) {
struct blob *blob = lookup_blob(oid);
if (blob) {
if (parse_blob_buffer(blob, buffer, size))
return NULL;
obj = &blob->object;
}
} else if (type == OBJ_TREE) {
struct tree *tree = lookup_tree(oid);
if (tree) {
obj = &tree->object;
if (!tree->buffer)
tree->object.parsed = 0;
if (!tree->object.parsed) {
if (parse_tree_buffer(tree, buffer, size))
return NULL;
*eaten_p = 1;
}
}
} else if (type == OBJ_COMMIT) {
struct commit *commit = lookup_commit(oid);
if (commit) {
if (parse_commit_buffer(commit, buffer, size))
return NULL;
if (!get_cached_commit_buffer(commit, NULL)) {
set_commit_buffer(commit, buffer, size);
*eaten_p = 1;
}
obj = &commit->object;
}
} else if (type == OBJ_TAG) {
struct tag *tag = lookup_tag(oid);
if (tag) {
if (parse_tag_buffer(tag, buffer, size))
return NULL;
obj = &tag->object;
}
} else {
warning("object %s has unknown type id %d", oid_to_hex(oid), type);
obj = NULL;
}
return obj;
}
static struct tree *shift_tree_object(struct tree *one, struct tree *two,
const char *subtree_shift)
{
unsigned char shifted[20];
if (!*subtree_shift) {
shift_tree(one->object.sha1, two->object.sha1, shifted, 0);
} else {
shift_tree_by(one->object.sha1, two->object.sha1, shifted,
subtree_shift);
}
if (!hashcmp(two->object.sha1, shifted))
return two;
return lookup_tree(shifted);
}
/* Diff two trees. */
static int stdin_diff_trees(struct tree *tree1, const char *p)
{
struct object_id oid;
struct tree *tree2;
if (!isspace(*p++) || parse_oid_hex(p, &oid, &p) || *p)
return error("Need exactly two trees, separated by a space");
tree2 = lookup_tree(&oid);
if (!tree2 || parse_tree(tree2))
return -1;
printf("%s %s\n", oid_to_hex(&tree1->object.oid),
oid_to_hex(&tree2->object.oid));
diff_tree_oid(&tree1->object.oid, &tree2->object.oid,
"", &log_tree_opt.diffopt);
log_tree_diff_flush(&log_tree_opt);
return 0;
}
/* Diff two trees. */
static int stdin_diff_trees(struct tree *tree1, char *line, int len)
{
unsigned char sha1[20];
struct tree *tree2;
if (len != 82 || !isspace(line[40]) || get_sha1_hex(line + 41, sha1))
return error("Need exactly two trees, separated by a space");
tree2 = lookup_tree(sha1);
if (!tree2 || parse_tree(tree2))
return -1;
printf("%s %s\n", sha1_to_hex(tree1->object.sha1),
sha1_to_hex(tree2->object.sha1));
diff_tree_sha1(tree1->object.sha1, tree2->object.sha1,
"", &log_tree_opt.diffopt);
log_tree_diff_flush(&log_tree_opt);
return 0;
}
int read_tree_recursive(struct tree *tree,
const char *base, int baselen,
int stage, const char **match,
read_tree_fn_t fn)
{
struct tree_desc desc;
struct name_entry entry;
if (parse_tree(tree))
return -1;
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
if (!match_tree_entry(base, baselen, entry.path, entry.mode, match))
continue;
switch (fn(entry.sha1, base, baselen, entry.path, entry.mode, stage)) {
case 0:
continue;
case READ_TREE_RECURSIVE:
break;;
default:
return -1;
}
if (S_ISDIR(entry.mode)) {
int retval;
char *newbase;
unsigned int pathlen = tree_entry_len(entry.path, entry.sha1);
newbase = xmalloc(baselen + 1 + pathlen);
memcpy(newbase, base, baselen);
memcpy(newbase + baselen, entry.path, pathlen);
newbase[baselen + pathlen] = '/';
retval = read_tree_recursive(lookup_tree(entry.sha1),
newbase,
baselen + pathlen + 1,
stage, match, fn);
free(newbase);
if (retval)
return -1;
continue;
}
}
return 0;
}
static int fsck_walk_tree(struct tree *tree, void *data, struct fsck_options *options)
{
struct tree_desc desc;
struct name_entry entry;
int res = 0;
const char *name;
if (parse_tree(tree))
return -1;
name = get_object_name(options, &tree->object);
if (init_tree_desc_gently(&desc, tree->buffer, tree->size))
return -1;
while (tree_entry_gently(&desc, &entry)) {
struct object *obj;
int result;
if (S_ISGITLINK(entry.mode))
continue;
if (S_ISDIR(entry.mode)) {
obj = (struct object *)lookup_tree(entry.oid);
if (name && obj)
put_object_name(options, obj, "%s%s/", name,
entry.path);
result = options->walk(obj, OBJ_TREE, data, options);
}
else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode)) {
obj = (struct object *)lookup_blob(entry.oid);
if (name && obj)
put_object_name(options, obj, "%s%s", name,
entry.path);
result = options->walk(obj, OBJ_BLOB, data, options);
}
else {
result = error("in tree %s: entry %s has bad mode %.6o",
describe_object(options, &tree->object), entry.path, entry.mode);
}
if (result < 0)
return result;
if (!res)
res = result;
}
return res;
}
static void process_tree(struct rev_info *revs,
struct tree *tree,
struct object_array *p,
struct name_path *path,
const char *name)
{
struct object *obj = &tree->object;
struct tree_desc desc;
struct name_entry entry;
struct name_path me;
if (!revs->tree_objects)
return;
if (!obj)
die("bad tree object");
if (obj->flags & (UNINTERESTING | SEEN))
return;
if (parse_tree(tree) < 0)
die("bad tree object %s", sha1_to_hex(obj->sha1));
obj->flags |= SEEN;
name = xstrdup(name);
add_object(obj, p, path, name);
me.up = path;
me.elem = name;
me.elem_len = strlen(name);
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
if (S_ISDIR(entry.mode))
process_tree(revs,
lookup_tree(entry.sha1),
p, &me, entry.path);
else if (S_ISGITLINK(entry.mode))
process_gitlink(revs, entry.sha1,
p, &me, entry.path);
else
process_blob(revs,
lookup_blob(entry.sha1),
p, &me, entry.path);
}
free(tree->buffer);
tree->buffer = NULL;
}
static int tree_is_complete(const struct object_id *oid)
{
struct tree_desc desc;
struct name_entry entry;
int complete;
struct tree *tree;
tree = lookup_tree(the_repository, oid);
if (!tree)
return 0;
if (tree->object.flags & SEEN)
return 1;
if (tree->object.flags & INCOMPLETE)
return 0;
if (!tree->buffer) {
enum object_type type;
unsigned long size;
void *data = read_object_file(oid, &type, &size);
if (!data) {
tree->object.flags |= INCOMPLETE;
return 0;
}
tree->buffer = data;
tree->size = size;
}
init_tree_desc(&desc, tree->buffer, tree->size);
complete = 1;
while (tree_entry(&desc, &entry)) {
if (!has_object_file(&entry.oid) ||
(S_ISDIR(entry.mode) && !tree_is_complete(&entry.oid))) {
tree->object.flags |= INCOMPLETE;
complete = 0;
}
}
free_tree_buffer(tree);
if (complete)
tree->object.flags |= SEEN;
return complete;
}
void mark_tree_uninteresting(struct tree *tree)
{
struct tree_desc desc;
struct name_entry entry;
struct object *obj = &tree->object;
if (!tree)
return;
if (obj->flags & UNINTERESTING)
return;
obj->flags |= UNINTERESTING;
if (!has_sha1_file(obj->sha1))
return;
if (parse_tree(tree) < 0)
die("bad tree %s", sha1_to_hex(obj->sha1));
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
switch (object_type(entry.mode)) {
case OBJ_TREE:
mark_tree_uninteresting(lookup_tree(entry.sha1));
break;
case OBJ_BLOB:
mark_blob_uninteresting(lookup_blob(entry.sha1));
break;
default:
/* Subproject commit - not in this repository */
break;
}
}
/*
* We don't care about the tree any more
* after it has been marked uninteresting.
*/
free(tree->buffer);
tree->buffer = NULL;
}
static struct tree *empty_tree(void)
{
return lookup_tree((const unsigned char *)EMPTY_TREE_SHA1_BIN);
}
static void process_tree(struct rev_info *revs,
struct tree *tree,
show_object_fn show,
struct strbuf *base,
const char *name,
void *cb_data)
{
struct object *obj = &tree->object;
struct tree_desc desc;
struct name_entry entry;
enum interesting match = revs->diffopt.pathspec.nr == 0 ?
all_entries_interesting: entry_not_interesting;
int baselen = base->len;
if (!revs->tree_objects)
return;
if (!obj)
die("bad tree object");
if (obj->flags & (UNINTERESTING | SEEN))
return;
if (parse_tree_gently(tree, revs->ignore_missing_links) < 0) {
if (revs->ignore_missing_links)
return;
die("bad tree object %s", oid_to_hex(&obj->oid));
}
obj->flags |= SEEN;
strbuf_addstr(base, name);
show(obj, base->buf, cb_data);
if (base->len)
strbuf_addch(base, '/');
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
if (match != all_entries_interesting) {
match = tree_entry_interesting(&entry, base, 0,
&revs->diffopt.pathspec);
if (match == all_entries_not_interesting)
break;
if (match == entry_not_interesting)
continue;
}
if (S_ISDIR(entry.mode))
process_tree(revs,
lookup_tree(entry.sha1),
show, base, entry.path,
cb_data);
else if (S_ISGITLINK(entry.mode))
process_gitlink(revs, entry.sha1,
show, base, entry.path,
cb_data);
else
process_blob(revs,
lookup_blob(entry.sha1),
show, base, entry.path,
cb_data);
}
strbuf_setlen(base, baselen);
free_tree_buffer(tree);
}
int cmd_diff(int argc, const char **argv, const char *prefix)
{
int i;
struct rev_info rev;
struct object_array_entry ent[100];
int ents = 0, blobs = 0, paths = 0;
const char *path = NULL;
struct blobinfo blob[2];
int nongit;
int result = 0;
/*
* We could get N tree-ish in the rev.pending_objects list.
* Also there could be M blobs there, and P pathspecs.
*
* N=0, M=0:
* cache vs files (diff-files)
* N=0, M=2:
* compare two random blobs. P must be zero.
* N=0, M=1, P=1:
* compare a blob with a working tree file.
*
* N=1, M=0:
* tree vs cache (diff-index --cached)
*
* N=2, M=0:
* tree vs tree (diff-tree)
*
* N=0, M=0, P=2:
* compare two filesystem entities (aka --no-index).
*
* Other cases are errors.
*/
prefix = setup_git_directory_gently(&nongit);
gitmodules_config();
git_config(git_diff_ui_config, NULL);
if (diff_use_color_default == -1)
diff_use_color_default = git_use_color_default;
init_revisions(&rev, prefix);
/* If this is a no-index diff, just run it and exit there. */
diff_no_index(&rev, argc, argv, nongit, prefix);
/* Otherwise, we are doing the usual "git" diff */
rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
/* Default to let external and textconv be used */
DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
if (nongit)
die("Not a git repository");
argc = setup_revisions(argc, argv, &rev, NULL);
if (!rev.diffopt.output_format) {
rev.diffopt.output_format = DIFF_FORMAT_PATCH;
if (diff_setup_done(&rev.diffopt) < 0)
die("diff_setup_done failed");
}
DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
/*
* If the user asked for our exit code then don't start a
* pager or we would end up reporting its exit code instead.
*/
if (!DIFF_OPT_TST(&rev.diffopt, EXIT_WITH_STATUS) &&
check_pager_config("diff") != 0)
setup_pager();
/*
* Do we have --cached and not have a pending object, then
* default to HEAD by hand. Eek.
*/
if (!rev.pending.nr) {
int i;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "--"))
break;
else if (!strcmp(arg, "--cached") ||
!strcmp(arg, "--staged")) {
add_head_to_pending(&rev);
if (!rev.pending.nr) {
struct tree *tree;
tree = lookup_tree((const unsigned char*)EMPTY_TREE_SHA1_BIN);
add_pending_object(&rev, &tree->object, "HEAD");
}
break;
}
}
}
for (i = 0; i < rev.pending.nr; i++) {
struct object_array_entry *list = rev.pending.objects+i;
struct object *obj = list->item;
const char *name = list->name;
int flags = (obj->flags & UNINTERESTING);
if (!obj->parsed)
obj = parse_object(obj->sha1);
obj = deref_tag(obj, NULL, 0);
if (!obj)
die("invalid object '%s' given.", name);
if (obj->type == OBJ_COMMIT)
obj = &((struct commit *)obj)->tree->object;
if (obj->type == OBJ_TREE) {
if (ARRAY_SIZE(ent) <= ents)
die("more than %d trees given: '%s'",
(int) ARRAY_SIZE(ent), name);
obj->flags |= flags;
ent[ents].item = obj;
ent[ents].name = name;
ents++;
continue;
}
if (obj->type == OBJ_BLOB) {
if (2 <= blobs)
die("more than two blobs given: '%s'", name);
hashcpy(blob[blobs].sha1, obj->sha1);
blob[blobs].name = name;
blob[blobs].mode = list->mode;
blobs++;
continue;
}
die("unhandled object '%s' given.", name);
}
if (rev.prune_data.nr) {
if (!path)
path = rev.prune_data.items[0].match;
paths += rev.prune_data.nr;
}
/*
* Now, do the arguments look reasonable?
*/
if (!ents) {
switch (blobs) {
case 0:
result = builtin_diff_files(&rev, argc, argv);
break;
case 1:
if (paths != 1)
usage(builtin_diff_usage);
result = builtin_diff_b_f(&rev, argc, argv, blob, path);
break;
case 2:
if (paths)
usage(builtin_diff_usage);
result = builtin_diff_blobs(&rev, argc, argv, blob);
break;
default:
usage(builtin_diff_usage);
}
}
else if (blobs)
usage(builtin_diff_usage);
else if (ents == 1)
result = builtin_diff_index(&rev, argc, argv);
else if (ents == 2)
result = builtin_diff_tree(&rev, argc, argv, ent);
else if (ent[0].item->flags & UNINTERESTING) {
/*
* diff A...B where there is at least one merge base
* between A and B. We have ent[0] == merge-base,
* ent[ents-2] == A, and ent[ents-1] == B. Show diff
* between the base and B. Note that we pick one
* merge base at random if there are more than one.
*/
ent[1] = ent[ents-1];
result = builtin_diff_tree(&rev, argc, argv, ent);
} else
result = builtin_diff_combined(&rev, argc, argv,
ent, ents);
result = diff_result_code(&rev.diffopt, result);
if (1 < rev.diffopt.skip_stat_unmatch)
refresh_index_quietly();
return result;
}
int cmd_diff(int argc, const char **argv, const char *prefix)
{
int i;
struct rev_info rev;
struct object_array ent = OBJECT_ARRAY_INIT;
int blobs = 0, paths = 0;
struct blobinfo blob[2];
int nongit;
int result = 0;
/*
* We could get N tree-ish in the rev.pending_objects list.
* Also there could be M blobs there, and P pathspecs.
*
* N=0, M=0:
* cache vs files (diff-files)
* N=0, M=2:
* compare two random blobs. P must be zero.
* N=0, M=1, P=1:
* compare a blob with a working tree file.
*
* N=1, M=0:
* tree vs cache (diff-index --cached)
*
* N=2, M=0:
* tree vs tree (diff-tree)
*
* N=0, M=0, P=2:
* compare two filesystem entities (aka --no-index).
*
* Other cases are errors.
*/
prefix = setup_git_directory_gently(&nongit);
gitmodules_config();
git_config(git_diff_ui_config, NULL);
init_revisions(&rev, prefix);
/* If this is a no-index diff, just run it and exit there. */
diff_no_index(&rev, argc, argv, nongit, prefix);
/* Otherwise, we are doing the usual "git" diff */
rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
/* Scale to real terminal size and respect statGraphWidth config */
rev.diffopt.stat_width = -1;
rev.diffopt.stat_graph_width = -1;
/* Default to let external and textconv be used */
DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
if (nongit)
die(_("Not a git repository"));
argc = setup_revisions(argc, argv, &rev, NULL);
if (!rev.diffopt.output_format) {
rev.diffopt.output_format = DIFF_FORMAT_PATCH;
diff_setup_done(&rev.diffopt);
}
DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
setup_diff_pager(&rev.diffopt);
/*
* Do we have --cached and not have a pending object, then
* default to HEAD by hand. Eek.
*/
if (!rev.pending.nr) {
int i;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "--"))
break;
else if (!strcmp(arg, "--cached") ||
!strcmp(arg, "--staged")) {
add_head_to_pending(&rev);
if (!rev.pending.nr) {
struct tree *tree;
tree = lookup_tree(EMPTY_TREE_SHA1_BIN);
add_pending_object(&rev, &tree->object, "HEAD");
}
break;
}
}
}
for (i = 0; i < rev.pending.nr; i++) {
struct object_array_entry *entry = &rev.pending.objects[i];
struct object *obj = entry->item;
const char *name = entry->name;
int flags = (obj->flags & UNINTERESTING);
if (!obj->parsed)
obj = parse_object(obj->sha1);
obj = deref_tag(obj, NULL, 0);
if (!obj)
die(_("invalid object '%s' given."), name);
if (obj->type == OBJ_COMMIT)
obj = &((struct commit *)obj)->tree->object;
if (obj->type == OBJ_TREE) {
obj->flags |= flags;
add_object_array(obj, name, &ent);
} else if (obj->type == OBJ_BLOB) {
if (2 <= blobs)
die(_("more than two blobs given: '%s'"), name);
hashcpy(blob[blobs].sha1, obj->sha1);
blob[blobs].name = name;
blob[blobs].mode = entry->mode;
blobs++;
} else {
die(_("unhandled object '%s' given."), name);
}
}
if (rev.prune_data.nr)
paths += rev.prune_data.nr;
/*
* Now, do the arguments look reasonable?
*/
if (!ent.nr) {
switch (blobs) {
case 0:
result = builtin_diff_files(&rev, argc, argv);
break;
case 1:
if (paths != 1)
usage(builtin_diff_usage);
result = builtin_diff_b_f(&rev, argc, argv, blob);
break;
case 2:
if (paths)
usage(builtin_diff_usage);
result = builtin_diff_blobs(&rev, argc, argv, blob);
break;
default:
usage(builtin_diff_usage);
}
}
else if (blobs)
usage(builtin_diff_usage);
else if (ent.nr == 1)
result = builtin_diff_index(&rev, argc, argv);
else if (ent.nr == 2)
result = builtin_diff_tree(&rev, argc, argv,
&ent.objects[0], &ent.objects[1]);
else if (ent.objects[0].item->flags & UNINTERESTING) {
/*
* diff A...B where there is at least one merge base
* between A and B. We have ent.objects[0] ==
* merge-base, ent.objects[ents-2] == A, and
* ent.objects[ents-1] == B. Show diff between the
* base and B. Note that we pick one merge base at
* random if there are more than one.
*/
result = builtin_diff_tree(&rev, argc, argv,
&ent.objects[0],
&ent.objects[ent.nr-1]);
} else
result = builtin_diff_combined(&rev, argc, argv,
ent.objects, ent.nr);
result = diff_result_code(&rev.diffopt, result);
if (1 < rev.diffopt.skip_stat_unmatch)
refresh_index_quietly();
return result;
}
int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size)
{
char *bufptr = buffer;
unsigned char parent[20];
struct commit_list **pptr;
struct commit_graft *graft;
unsigned n_refs = 0;
if (item->object.parsed)
return 0;
item->object.parsed = 1;
if (memcmp(bufptr, "tree ", 5))
return error("bogus commit object %s", sha1_to_hex(item->object.sha1));
if (get_sha1_hex(bufptr + 5, parent) < 0)
return error("bad tree pointer in commit %s\n", sha1_to_hex(item->object.sha1));
item->tree = lookup_tree(parent);
if (item->tree)
n_refs++;
bufptr += 46; /* "tree " + "hex sha1" + "\n" */
pptr = &item->parents;
graft = lookup_commit_graft(item->object.sha1);
while (!memcmp(bufptr, "parent ", 7)) {
struct commit *new_parent;
if (get_sha1_hex(bufptr + 7, parent) || bufptr[47] != '\n')
return error("bad parents in commit %s", sha1_to_hex(item->object.sha1));
bufptr += 48;
if (graft)
continue;
new_parent = lookup_commit(parent);
if (new_parent) {
pptr = &commit_list_insert(new_parent, pptr)->next;
n_refs++;
}
}
if (graft) {
int i;
struct commit *new_parent;
for (i = 0; i < graft->nr_parent; i++) {
new_parent = lookup_commit(graft->parent[i]);
if (!new_parent)
continue;
pptr = &commit_list_insert(new_parent, pptr)->next;
n_refs++;
}
}
item->date = parse_commit_date(bufptr);
if (track_object_refs) {
unsigned i = 0;
struct commit_list *p;
struct object_refs *refs = alloc_object_refs(n_refs);
if (item->tree)
refs->ref[i++] = &item->tree->object;
for (p = item->parents; p; p = p->next)
refs->ref[i++] = &p->item->object;
set_object_refs(&item->object, refs);
}
return 0;
}
static struct tree *empty_tree(void)
{
return lookup_tree(EMPTY_TREE_SHA1_BIN);
}
static int read_tree_1(struct tree *tree, struct strbuf *base,
int stage, const struct pathspec *pathspec,
read_tree_fn_t fn, void *context)
{
struct tree_desc desc;
struct name_entry entry;
unsigned char sha1[20];
int len, oldlen = base->len;
enum interesting retval = entry_not_interesting;
if (parse_tree(tree))
return -1;
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
if (retval != all_entries_interesting) {
retval = tree_entry_interesting(&entry, base, 0, pathspec);
if (retval == all_entries_not_interesting)
break;
if (retval == entry_not_interesting)
continue;
}
switch (fn(entry.sha1, base,
entry.path, entry.mode, stage, context)) {
case 0:
continue;
case READ_TREE_RECURSIVE:
break;
default:
return -1;
}
if (S_ISDIR(entry.mode))
hashcpy(sha1, entry.sha1);
else if (S_ISGITLINK(entry.mode)) {
struct commit *commit;
commit = lookup_commit(entry.sha1);
if (!commit)
die("Commit %s in submodule path %s%s not found",
sha1_to_hex(entry.sha1),
base->buf, entry.path);
if (parse_commit(commit))
die("Invalid commit %s in submodule path %s%s",
sha1_to_hex(entry.sha1),
base->buf, entry.path);
hashcpy(sha1, commit->tree->object.sha1);
}
else
continue;
len = tree_entry_len(&entry);
strbuf_add(base, entry.path, len);
strbuf_addch(base, '/');
retval = read_tree_1(lookup_tree(sha1),
base, stage, pathspec,
fn, context);
strbuf_setlen(base, oldlen);
if (retval)
return -1;
}
return 0;
}
static void process_tree(struct rev_info *revs,
struct tree *tree,
show_object_fn show,
struct name_path *path,
struct strbuf *base,
const char *name)
{
struct object *obj = &tree->object;
struct tree_desc desc;
struct name_entry entry;
struct name_path me;
int all_interesting = (revs->diffopt.pathspec.nr == 0);
int baselen = base->len;
if (!revs->tree_objects)
return;
if (!obj)
die("bad tree object");
if (obj->flags & (UNINTERESTING | SEEN))
return;
if (parse_tree(tree) < 0)
die("bad tree object %s", sha1_to_hex(obj->sha1));
obj->flags |= SEEN;
show(obj, path, name);
me.up = path;
me.elem = name;
me.elem_len = strlen(name);
if (!all_interesting) {
strbuf_addstr(base, name);
if (base->len)
strbuf_addch(base, '/');
}
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
if (!all_interesting) {
int showit = tree_entry_interesting(&entry,
base, 0,
&revs->diffopt.pathspec);
if (showit < 0)
break;
else if (!showit)
continue;
else if (showit == 2)
all_interesting = 1;
}
if (S_ISDIR(entry.mode))
process_tree(revs,
lookup_tree(entry.sha1),
show, &me, base, entry.path);
else if (S_ISGITLINK(entry.mode))
process_gitlink(revs, entry.sha1,
show, &me, entry.path);
else
process_blob(revs,
lookup_blob(entry.sha1),
show, &me, entry.path);
}
strbuf_setlen(base, baselen);
free(tree->buffer);
tree->buffer = NULL;
}
void resolve_tree_islands(struct repository *r,
int progress,
struct packing_data *to_pack)
{
struct progress *progress_state = NULL;
struct tree_islands_todo *todo;
int nr = 0;
int i;
if (!island_marks)
return;
/*
* We process only trees, as commits and tags have already been handled
* (and passed their marks on to root trees, as well. We must make sure
* to process them in descending tree-depth order so that marks
* propagate down the tree properly, even if a sub-tree is found in
* multiple parent trees.
*/
ALLOC_ARRAY(todo, to_pack->nr_objects);
for (i = 0; i < to_pack->nr_objects; i++) {
if (oe_type(&to_pack->objects[i]) == OBJ_TREE) {
todo[nr].entry = &to_pack->objects[i];
todo[nr].depth = oe_tree_depth(to_pack, &to_pack->objects[i]);
nr++;
}
}
QSORT(todo, nr, tree_depth_compare);
if (progress)
progress_state = start_progress(_("Propagating island marks"), nr);
for (i = 0; i < nr; i++) {
struct object_entry *ent = todo[i].entry;
struct island_bitmap *root_marks;
struct tree *tree;
struct tree_desc desc;
struct name_entry entry;
khiter_t pos;
pos = kh_get_sha1(island_marks, ent->idx.oid.hash);
if (pos >= kh_end(island_marks))
continue;
root_marks = kh_value(island_marks, pos);
tree = lookup_tree(r, &ent->idx.oid);
if (!tree || parse_tree(tree) < 0)
die(_("bad tree object %s"), oid_to_hex(&ent->idx.oid));
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
struct object *obj;
if (S_ISGITLINK(entry.mode))
continue;
obj = lookup_object(r, entry.oid->hash);
if (!obj)
continue;
set_island_marks(obj, root_marks);
}
free_tree_buffer(tree);
display_progress(progress_state, i+1);
}
stop_progress(&progress_state);
free(todo);
}
main ()
{
tree_sTable *tp;
sNode *np;
int key;
int i;
char s[256];
char *cp;
char c;
tp = tree_CreateTable(sizeof(int), offsetof(sNode, key), sizeof(sNode), 100, tree_eComp_int32, NULL);
for (i = 0; i < 1000; i += 10) {
tree_Insert(tp, &i);
}
for ( ;;) {
printf("Command: ");
cp = gets(s);
c = s[0];
if (cp == NULL || c == '\0') {
printf("\nGoodbye\n");
return;
}
switch (c) {
case 'i':
case 'I':
printf("Insert, Key: ");
gets(s);
key = atoi(s);
if (tree_Find(tp, &key) == NULL) {
tree_Insert(tp, &key);
} else
printf("\nKey allready exists!\n");
break;
case 'd':
case 'D':
printf("Delete, Key: ");
gets(s);
key = atoi(s);
if ((np = tree_Find(tp, &key)) != NULL) {
tree_Remove(tp, &key);
} else
printf("\nKey does not exist!\n");
break;
case 'f':
case 'F':
printf("Find, Key: ");
gets(s);
key = atoi(s);
if ((np = tree_Find(tp, &key)) == NULL) {
printf("\nKey does not exist!\n");
} else
printf("\nKey exists! %d\n", np->key);
break;
case 's':
case 'S':
printf("Find successor, Key: ");
gets(s);
key = atoi(s);
if ((np = tree_FindSuccessor(tp, &key)) == NULL) {
printf("\nKey does not exist!\n");
} else
printf("\nKey exists! %d\n", np->key);
break;
case 'p':
case 'P':
printf("Find predecessor, Key: ");
gets(s);
key = atoi(s);
if ((np = tree_FindPredecessor(tp, &key)) == NULL) {
printf("\nKey does not exist!\n");
} else
printf("\nKey exists! %d\n", np->key);
break;
#if 0
case 't':
case 'T':
printf("Start: ");
gets(s);
start = atoi(s);
printf("Stop: ");
gets(s);
stop = atoi(s);
printf("Order: ");
gets(s);
c = s[0];
switch (c) {
case 's':
case 'S':
printf("\navl-tree\n");
i = start;
j = stop;
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
cpu = cputim;
page = pageflts;
for (; i <= j; i++) {
if (TreeSearch(tp,i) == tp->Null) {
np = TreeAlloc(tp, i);
TreeInsert(tp, np);
}
}
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
printf("Cputim: %d, Pageflts: %d\n", cputim - cpu, pageflts - page);
i = start;
j = stop;
printf("\nlib$tree\n");
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
cpu = cputim;
page = pageflts;
for (; i <= j; i++) {
sts = lib$lookup_tree(<p, i, Compare, &lnp);
if (!(sts & 1)) {
lib$insert_tree(<p, i, &0, Compare, Alloc, &lnp, 0);
}
}
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
printf("Cputim: %d, Pageflts: %d\n", cputim - cpu, pageflts - page);
break;
case 'd':
case 'D':
i = start;
j = stop;
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
cpu = cputim;
page = pageflts;
for (; i <= j; i++) {
if ((np = TreeSearch(tp,i)) != tp->Null) {
TreeDelete(tp, np);
} else {
printf("Could not find %d\n", i);
}
}
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
printf("Cputim: %d, Pageflts: %d\n", cputim - cpu, pageflts - page);
break;
case 'f':
case 'F':
printf("\navl-tree\n");
i = start;
j = stop;
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
cpu = cputim;
page = pageflts;
for (; i <= j; i++) {
if ((np = TreeSearch(tp,i)) != tp->Null) {
} else {
printf("Could not find %d\n", i);
}
}
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
printf("Cputim: %d, Pageflts: %d\n", cputim - cpu, pageflts - page);
i = start;
j = stop;
printf("\nlib$tree\n");
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
cpu = cputim;
page = pageflts;
for (; i <= j; i++) {
sts = lib$lookup_tree(<p, i, Compare, &lnp);
}
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
printf("Cputim: %d, Pageflts: %d\n", cputim - cpu, pageflts - page);
break;
case 'b':
case 'B':
i = start;
j = stop;
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
cpu = cputim;
page = pageflts;
for (; i <= j; j--) {
if (TreeSearch(tp,j) == tp->Null) {
np = TreeAlloc(tp, j);
TreeInsert(tp, np);
}
}
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
printf("Cputim: %d, Pageflts: %d\n", cputim - cpu, pageflts - page);
break;
case 'r':
case 'R':
i = start;
j = stop;
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
cpu = cputim;
page = pageflts;
for (; i <= j; i++) {
k = 65535 & rand();
if (TreeSearch(tp,k) == tp->Null) {
np = TreeAlloc(tp, k);
TreeInsert(tp, np);
}
}
sts = sys$getjpiw(0, &pid, 0,item_list, 0, 0, 0);
printf("Cputim: %d, Pageflts: %d\n", cputim - cpu, pageflts - page);
break;
default:
printf("Illegal order!\n");
break;
}
break;
case 'p':
case 'P':
tp->ErrorCount = 0;
tp->HZCount = 0;
tp->HNCount = 0;
tp->HPCount = 0;
maxlevel = 0;
count = 0;
hight = 0;
TreePrint(tp, tp->Root, NULL, NULL,0);
TreeCheck (tp, tp->Root, &count, &maxlevel, &hight, 0);
printf("Hight: %d\n", hight);
#if 0
TreePrintInorder(tp, tp->Root, 0);
#endif
sp = TreeMinimum(tp, tp->Root);
ep = TreeMaximum(tp, tp->Root);
op = sp;
for (np = TreeSuccessor(tp, op); op != ep; np = TreeSuccessor(tp, np)) {
#if 0
printf("Key: %d\n", op->Key);
#endif
if (op->Key >= np->Key)
tp->ErrorCount++;
op = np;
}
printf("Hight.......: %d\n", hight);
printf("Insert......: %d\n", tp->Insert);
printf("Search......: %d\n", tp->Search);
printf("Delete......: %d\n", tp->Delete);
printf("NodeCount...: %d\n", tp->NodeCount);
printf("FreeCount...: %d\n", tp->FreeCount);
printf("MaxDepth....: %d\n", tp->MaxDepth);
printf("HZCount.....: %d\n", tp->HZCount);
printf("HNCount.....: %d\n", tp->HNCount);
printf("HPCount.....: %d\n", tp->HPCount);
printf("LLCount.....: %d\n", tp->LLCount);
printf("LRCount.....: %d\n", tp->LRCount);
printf("RLCount.....: %d\n", tp->RLCount);
printf("RRCount.....: %d\n", tp->RRCount);
printf("AllocCount..: %d\n", tp->AllocCount);
printf("MallocCount.: %d\n", tp->MallocCount);
printf("ErrorCount..: %d\n", tp->ErrorCount);
count = maxlevel = 0;
Print(ltp, &count, &maxlevel, 0);
printf("\nlib$tree\n");
printf("Count.......: %d\n", count);
printf("MaxDepth....: %d\n", maxlevel);
break;
case 'l':
case 'L':
TreePrintInorder(tp, tp->Root, 0);
break;
#endif
case 'q':
case 'Q':
printf("\nGoodbye\n");
return;
break;
default:
printf("Illegal command!\n");
break;
}
}
}
int cmd_diff(int argc, const char **argv, const char *prefix)
{
int i;
struct rev_info rev;
struct object_array ent = OBJECT_ARRAY_INIT;
int blobs = 0, paths = 0;
struct blobinfo blob[2];
int nongit = 0, no_index = 0;
int result = 0;
/*
* We could get N tree-ish in the rev.pending_objects list.
* Also there could be M blobs there, and P pathspecs.
*
* N=0, M=0:
* cache vs files (diff-files)
* N=0, M=2:
* compare two random blobs. P must be zero.
* N=0, M=1, P=1:
* compare a blob with a working tree file.
*
* N=1, M=0:
* tree vs cache (diff-index --cached)
*
* N=2, M=0:
* tree vs tree (diff-tree)
*
* N=0, M=0, P=2:
* compare two filesystem entities (aka --no-index).
*
* Other cases are errors.
*/
/* Were we asked to do --no-index explicitly? */
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "--")) {
i++;
break;
}
if (!strcmp(argv[i], "--no-index"))
no_index = DIFF_NO_INDEX_EXPLICIT;
if (argv[i][0] != '-')
break;
}
if (!no_index)
prefix = setup_git_directory_gently(&nongit);
/*
* Treat git diff with at least one path outside of the
* repo the same as if the command would have been executed
* outside of a git repository. In this case it behaves
* the same way as "git diff --no-index <a> <b>", which acts
* as a colourful "diff" replacement.
*/
if (nongit || ((argc == i + 2) &&
(!path_inside_repo(prefix, argv[i]) ||
!path_inside_repo(prefix, argv[i + 1]))))
no_index = DIFF_NO_INDEX_IMPLICIT;
if (!no_index)
gitmodules_config();
init_diff_ui_defaults();
git_config(git_diff_ui_config, NULL);
precompose_argv(argc, argv);
init_revisions(&rev, prefix);
if (no_index && argc != i + 2) {
if (no_index == DIFF_NO_INDEX_IMPLICIT) {
/*
* There was no --no-index and there were not two
* paths. It is possible that the user intended
* to do an inside-repository operation.
*/
fprintf(stderr, "Not a git repository\n");
fprintf(stderr,
"To compare two paths outside a working tree:\n");
}
/* Give the usage message for non-repository usage and exit. */
usagef("git diff %s <path> <path>",
no_index == DIFF_NO_INDEX_EXPLICIT ?
"--no-index" : "[--no-index]");
}
if (no_index)
/* If this is a no-index diff, just run it and exit there. */
diff_no_index(&rev, argc, argv);
/* Otherwise, we are doing the usual "git" diff */
rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
/* Scale to real terminal size and respect statGraphWidth config */
rev.diffopt.stat_width = -1;
rev.diffopt.stat_graph_width = -1;
/* Default to let external and textconv be used */
DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
if (nongit)
die(_("Not a git repository"));
argc = setup_revisions(argc, argv, &rev, NULL);
if (!rev.diffopt.output_format) {
rev.diffopt.output_format = DIFF_FORMAT_PATCH;
diff_setup_done(&rev.diffopt);
}
DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
setup_diff_pager(&rev.diffopt);
/*
* Do we have --cached and not have a pending object, then
* default to HEAD by hand. Eek.
*/
if (!rev.pending.nr) {
int i;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "--"))
break;
else if (!strcmp(arg, "--cached") ||
!strcmp(arg, "--staged")) {
add_head_to_pending(&rev);
if (!rev.pending.nr) {
struct tree *tree;
tree = lookup_tree(EMPTY_TREE_SHA1_BIN);
add_pending_object(&rev, &tree->object, "HEAD");
}
break;
}
}
}
for (i = 0; i < rev.pending.nr; i++) {
struct object_array_entry *entry = &rev.pending.objects[i];
struct object *obj = entry->item;
const char *name = entry->name;
int flags = (obj->flags & UNINTERESTING);
if (!obj->parsed)
obj = parse_object(obj->oid.hash);
obj = deref_tag(obj, NULL, 0);
if (!obj)
die(_("invalid object '%s' given."), name);
if (obj->type == OBJ_COMMIT)
obj = &((struct commit *)obj)->tree->object;
if (obj->type == OBJ_TREE) {
obj->flags |= flags;
add_object_array(obj, name, &ent);
} else if (obj->type == OBJ_BLOB) {
if (2 <= blobs)
die(_("more than two blobs given: '%s'"), name);
hashcpy(blob[blobs].sha1, obj->oid.hash);
blob[blobs].name = name;
blob[blobs].mode = entry->mode;
blobs++;
} else {
die(_("unhandled object '%s' given."), name);
}
}
if (rev.prune_data.nr)
paths += rev.prune_data.nr;
/*
* Now, do the arguments look reasonable?
*/
if (!ent.nr) {
switch (blobs) {
case 0:
result = builtin_diff_files(&rev, argc, argv);
break;
case 1:
if (paths != 1)
usage(builtin_diff_usage);
result = builtin_diff_b_f(&rev, argc, argv, blob);
break;
case 2:
if (paths)
usage(builtin_diff_usage);
result = builtin_diff_blobs(&rev, argc, argv, blob);
break;
default:
usage(builtin_diff_usage);
}
}
else if (blobs)
usage(builtin_diff_usage);
else if (ent.nr == 1)
result = builtin_diff_index(&rev, argc, argv);
else if (ent.nr == 2)
result = builtin_diff_tree(&rev, argc, argv,
&ent.objects[0], &ent.objects[1]);
else if (ent.objects[0].item->flags & UNINTERESTING) {
/*
* diff A...B where there is at least one merge base
* between A and B. We have ent.objects[0] ==
* merge-base, ent.objects[ents-2] == A, and
* ent.objects[ents-1] == B. Show diff between the
* base and B. Note that we pick one merge base at
* random if there are more than one.
*/
result = builtin_diff_tree(&rev, argc, argv,
&ent.objects[0],
&ent.objects[ent.nr-1]);
} else
result = builtin_diff_combined(&rev, argc, argv,
ent.objects, ent.nr);
result = diff_result_code(&rev.diffopt, result);
if (1 < rev.diffopt.skip_stat_unmatch)
refresh_index_quietly();
return result;
}
