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Diffstat (limited to 'fetch-pack.c')
-rw-r--r--fetch-pack.c50
1 files changed, 44 insertions, 6 deletions
diff --git a/fetch-pack.c b/fetch-pack.c
index 953c0cf44..459736909 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -12,6 +12,7 @@ static const char *exec = "git-upload-pack";
static int find_common(int fd[2], unsigned char *result_sha1,
struct ref *refs)
{
+ int fetching;
static char line[1000];
int count = 0, flushes = 0, retval;
FILE *revs;
@@ -20,16 +21,19 @@ static int find_common(int fd[2], unsigned char *result_sha1,
if (!revs)
die("unable to run 'git-rev-list'");
- while (refs) {
+ fetching = 0;
+ for ( ; refs ; refs = refs->next) {
unsigned char *remote = refs->old_sha1;
- if (verbose)
- fprintf(stderr,
- "want %s (%s)\n", sha1_to_hex(remote),
- refs->name);
+ unsigned char *local = refs->new_sha1;
+
+ if (!memcmp(remote, local, 20))
+ continue;
packet_write(fd[1], "want %s\n", sha1_to_hex(remote));
- refs = refs->next;
+ fetching++;
}
packet_flush(fd[1]);
+ if (!fetching)
+ return 1;
flushes = 1;
retval = -1;
while (fgets(line, sizeof(line), revs) != NULL) {
@@ -74,6 +78,35 @@ static int find_common(int fd[2], unsigned char *result_sha1,
return retval;
}
+static int everything_local(struct ref *refs)
+{
+ int retval;
+
+ for (retval = 1; refs ; refs = refs->next) {
+ const unsigned char *remote = refs->old_sha1;
+ unsigned char local[20];
+
+ if (read_ref(git_path("%s", refs->name), local) < 0 ||
+ memcmp(remote, local, 20)) {
+ retval = 0;
+ if (!verbose)
+ continue;
+ fprintf(stderr,
+ "want %s (%s)\n", sha1_to_hex(remote),
+ refs->name);
+ continue;
+ }
+
+ memcpy(refs->new_sha1, local, 20);
+ if (!verbose)
+ continue;
+ fprintf(stderr,
+ "already have %s (%s)\n", sha1_to_hex(remote),
+ refs->name);
+ }
+ return retval;
+}
+
static int fetch_pack(int fd[2], int nr_match, char **match)
{
struct ref *ref;
@@ -86,6 +119,10 @@ static int fetch_pack(int fd[2], int nr_match, char **match)
packet_flush(fd[1]);
die("no matching remote head");
}
+ if (everything_local(ref)) {
+ packet_flush(fd[1]);
+ goto all_done;
+ }
if (find_common(fd, sha1, ref) < 0)
fprintf(stderr, "warning: no common commits\n");
pid = fork();
@@ -109,6 +146,7 @@ static int fetch_pack(int fd[2], int nr_match, char **match)
int code = WEXITSTATUS(status);
if (code)
die("git-unpack-objects died with error code %d", code);
+all_done:
while (ref) {
printf("%s %s\n",
sha1_to_hex(ref->old_sha1), ref->name);