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git/shallow.c
Alexandre Julliard abef3a1625 Shallow clone: do not ignore shallowness when following tags
Tags should be considered when truncating the
commit list. The patch below fixes it, and fetches the right number of
commits for each tag. However the correct fix is probably to not fetch
historical tags at all.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-11-24 15:42:49 -08:00

102 lines
2.2 KiB
C

#include "cache.h"
#include "commit.h"
#include "tag.h"
static int is_shallow = -1;
int register_shallow(const unsigned char *sha1)
{
struct commit_graft *graft =
xmalloc(sizeof(struct commit_graft));
struct commit *commit = lookup_commit(sha1);
hashcpy(graft->sha1, sha1);
graft->nr_parent = -1;
if (commit && commit->object.parsed)
commit->parents = NULL;
return register_commit_graft(graft, 0);
}
int is_repository_shallow()
{
FILE *fp;
char buf[1024];
if (is_shallow >= 0)
return is_shallow;
fp = fopen(git_path("shallow"), "r");
if (!fp) {
is_shallow = 0;
return is_shallow;
}
is_shallow = 1;
while (fgets(buf, sizeof(buf), fp)) {
unsigned char sha1[20];
if (get_sha1_hex(buf, sha1))
die("bad shallow line: %s", buf);
register_shallow(sha1);
}
fclose(fp);
return is_shallow;
}
struct commit_list *get_shallow_commits(struct object_array *heads, int depth,
int shallow_flag, int not_shallow_flag)
{
int i = 0, cur_depth = 0;
struct commit_list *result = NULL;
struct object_array stack = {0, 0, NULL};
struct commit *commit = NULL;
while (commit || i < heads->nr || stack.nr) {
struct commit_list *p;
if (!commit) {
if (i < heads->nr) {
commit = (struct commit *)
deref_tag(heads->objects[i++].item, NULL, 0);
if (commit->object.type != OBJ_COMMIT) {
commit = NULL;
continue;
}
commit->util = xcalloc(1, sizeof(int));
cur_depth = 0;
} else {
commit = (struct commit *)
stack.objects[--stack.nr].item;
cur_depth = *(int *)commit->util;
}
}
parse_commit(commit);
commit->object.flags |= not_shallow_flag;
cur_depth++;
for (p = commit->parents, commit = NULL; p; p = p->next) {
if (!p->item->util) {
int *pointer = xmalloc(sizeof(int));
p->item->util = pointer;
*pointer = cur_depth;
} else {
int *pointer = p->item->util;
if (cur_depth >= *pointer)
continue;
*pointer = cur_depth;
}
if (cur_depth < depth) {
if (p->next)
add_object_array(&p->item->object,
NULL, &stack);
else {
commit = p->item;
cur_depth = *(int *)commit->util;
}
} else {
commit_list_insert(p->item, &result);
p->item->object.flags |= shallow_flag;
}
}
}
return result;
}