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authorJunio C Hamano <gitster@pobox.com>2013-03-21 14:02:27 -0700
committerJunio C Hamano <gitster@pobox.com>2013-03-21 14:02:27 -0700
commite4e1c5499056de58f7df207cf41274a321857c77 (patch)
tree0db72148291ce77c21c959a5ed7fe333f1271409 /fetch-pack.c
parentc241e285e53bc84def85682eeaa265c1cd99cceb (diff)
parent6e7b66eebd18c11f58a9790b8f071618a1bb5b2c (diff)
downloadgit-e4e1c5499056de58f7df207cf41274a321857c77.tar.gz
Merge branch 'jc/fetch-raw-sha1'
Allows requests to fetch objects at any tip of refs (including hidden ones). It seems that there may be use cases even outside Gerrit (e.g. $gmane/215701). * jc/fetch-raw-sha1: fetch: fetch objects by their exact SHA-1 object names upload-pack: optionally allow fetching from the tips of hidden refs fetch: use struct ref to represent refs to be fetched parse_fetch_refspec(): clarify the codeflow a bit
Diffstat (limited to 'fetch-pack.c')
-rw-r--r--fetch-pack.c101
1 files changed, 69 insertions, 32 deletions
diff --git a/fetch-pack.c b/fetch-pack.c
index 6d8926a550..cef8fde61b 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -36,7 +36,7 @@ static int marked;
#define MAX_IN_VAIN 256
static struct commit_list *rev_list;
-static int non_common_revs, multi_ack, use_sideband;
+static int non_common_revs, multi_ack, use_sideband, allow_tip_sha1_in_want;
static void rev_list_push(struct commit *commit, int mark)
{
@@ -520,47 +520,37 @@ static void mark_recent_complete_commits(struct fetch_pack_args *args,
}
}
-static int non_matching_ref(struct string_list_item *item, void *unused)
-{
- if (item->util) {
- item->util = NULL;
- return 0;
- }
- else
- return 1;
-}
-
static void filter_refs(struct fetch_pack_args *args,
- struct ref **refs, struct string_list *sought)
+ struct ref **refs,
+ struct ref **sought, int nr_sought)
{
struct ref *newlist = NULL;
struct ref **newtail = &newlist;
struct ref *ref, *next;
- int sought_pos;
+ int i;
- sought_pos = 0;
+ i = 0;
for (ref = *refs; ref; ref = next) {
int keep = 0;
next = ref->next;
+
if (!memcmp(ref->name, "refs/", 5) &&
check_refname_format(ref->name + 5, 0))
; /* trash */
else {
- while (sought_pos < sought->nr) {
- int cmp = strcmp(ref->name, sought->items[sought_pos].string);
+ while (i < nr_sought) {
+ int cmp = strcmp(ref->name, sought[i]->name);
if (cmp < 0)
break; /* definitely do not have it */
else if (cmp == 0) {
keep = 1; /* definitely have it */
- sought->items[sought_pos++].util = "matched";
- break;
+ sought[i]->matched = 1;
}
- else
- sought_pos++; /* might have it; keep looking */
+ i++;
}
}
- if (! keep && args->fetch_all &&
+ if (!keep && args->fetch_all &&
(!args->depth || prefixcmp(ref->name, "refs/tags/")))
keep = 1;
@@ -573,7 +563,21 @@ static void filter_refs(struct fetch_pack_args *args,
}
}
- filter_string_list(sought, 0, non_matching_ref, NULL);
+ /* Append unmatched requests to the list */
+ if (allow_tip_sha1_in_want) {
+ for (i = 0; i < nr_sought; i++) {
+ ref = sought[i];
+ if (ref->matched)
+ continue;
+ if (get_sha1_hex(ref->name, ref->old_sha1))
+ continue;
+
+ ref->matched = 1;
+ *newtail = ref;
+ ref->next = NULL;
+ newtail = &ref->next;
+ }
+ }
*refs = newlist;
}
@@ -583,7 +587,8 @@ static void mark_alternate_complete(const struct ref *ref, void *unused)
}
static int everything_local(struct fetch_pack_args *args,
- struct ref **refs, struct string_list *sought)
+ struct ref **refs,
+ struct ref **sought, int nr_sought)
{
struct ref *ref;
int retval;
@@ -637,7 +642,7 @@ static int everything_local(struct fetch_pack_args *args,
}
}
- filter_refs(args, refs, sought);
+ filter_refs(args, refs, sought, nr_sought);
for (retval = 1, ref = *refs; ref ; ref = ref->next) {
const unsigned char *remote = ref->old_sha1;
@@ -767,10 +772,17 @@ static int get_pack(struct fetch_pack_args *args,
return 0;
}
+static int cmp_ref_by_name(const void *a_, const void *b_)
+{
+ const struct ref *a = *((const struct ref **)a_);
+ const struct ref *b = *((const struct ref **)b_);
+ return strcmp(a->name, b->name);
+}
+
static struct ref *do_fetch_pack(struct fetch_pack_args *args,
int fd[2],
const struct ref *orig_ref,
- struct string_list *sought,
+ struct ref **sought, int nr_sought,
char **pack_lockfile)
{
struct ref *ref = copy_ref_list(orig_ref);
@@ -779,6 +791,7 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args,
int agent_len;
sort_ref_list(&ref, ref_compare_name);
+ qsort(sought, nr_sought, sizeof(*sought), cmp_ref_by_name);
if (is_repository_shallow() && !server_supports("shallow"))
die("Server does not support shallow clients");
@@ -808,6 +821,11 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args,
fprintf(stderr, "Server supports side-band\n");
use_sideband = 1;
}
+ if (server_supports("allow-tip-sha1-in-want")) {
+ if (args->verbose)
+ fprintf(stderr, "Server supports allow-tip-sha1-in-want\n");
+ allow_tip_sha1_in_want = 1;
+ }
if (!server_supports("thin-pack"))
args->use_thin_pack = 0;
if (!server_supports("no-progress"))
@@ -827,7 +845,7 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args,
agent_len, agent_feature);
}
- if (everything_local(args, &ref, sought)) {
+ if (everything_local(args, &ref, sought, nr_sought)) {
packet_flush(fd[1]);
goto all_done;
}
@@ -890,11 +908,32 @@ static void fetch_pack_setup(void)
did_setup = 1;
}
+static int remove_duplicates_in_refs(struct ref **ref, int nr)
+{
+ struct string_list names = STRING_LIST_INIT_NODUP;
+ int src, dst;
+
+ for (src = dst = 0; src < nr; src++) {
+ struct string_list_item *item;
+ item = string_list_insert(&names, ref[src]->name);
+ if (item->util)
+ continue; /* already have it */
+ item->util = ref[src];
+ if (src != dst)
+ ref[dst] = ref[src];
+ dst++;
+ }
+ for (src = dst; src < nr; src++)
+ ref[src] = NULL;
+ string_list_clear(&names, 0);
+ return dst;
+}
+
struct ref *fetch_pack(struct fetch_pack_args *args,
int fd[], struct child_process *conn,
const struct ref *ref,
const char *dest,
- struct string_list *sought,
+ struct ref **sought, int nr_sought,
char **pack_lockfile)
{
struct stat st;
@@ -906,16 +945,14 @@ struct ref *fetch_pack(struct fetch_pack_args *args,
st.st_mtime = 0;
}
- if (sought->nr) {
- sort_string_list(sought);
- string_list_remove_duplicates(sought, 0);
- }
+ if (nr_sought)
+ nr_sought = remove_duplicates_in_refs(sought, nr_sought);
if (!ref) {
packet_flush(fd[1]);
die("no matching remote head");
}
- ref_cpy = do_fetch_pack(args, fd, ref, sought, pack_lockfile);
+ ref_cpy = do_fetch_pack(args, fd, ref, sought, nr_sought, pack_lockfile);
if (args->depth > 0) {
static struct lock_file lock;