upload-pack: use object pointer not copy of sha1 to keep track of has/needs.

This does not change what happens in the command in any way, but
is to prepare for further work.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/upload-pack.c b/upload-pack.c
index b18eb9ba0dbe8b5020aaaa698d98a4d1b76aa49c..d98d59f92175c47ee6c21e4531351311ced8b456 100644 (file)
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -18,8 +18,8 @@ static const char upload_pack_usage[] = "git-upload-pack [--strict] [--timeout=n
 #define MAX_NEEDS 256
 static int nr_has = 0, nr_needs = 0, multi_ack = 0, nr_our_refs = 0;
 static int use_thin_pack = 0;
-static unsigned char has_sha1[MAX_HAS][20];
-static unsigned char needs_sha1[MAX_NEEDS][20];
+static struct object *has_tip[MAX_HAS];
+static struct object *needs_tip[MAX_NEEDS];
 static unsigned int timeout = 0;
 static int use_sideband = 0;
 
@@ -119,7 +119,7 @@ static void create_pack_file(void)
                else {
                        for (i = 0; i < nr_needs; i++) {
                                *p++ = buf;
-                               memcpy(buf, sha1_to_hex(needs_sha1[i]), 41);
+                               memcpy(buf, sha1_to_hex(needs_tip[i]->sha1), 41);
                                buf += 41;
                        }
                }
@@ -127,7 +127,7 @@ static void create_pack_file(void)
                        for (i = 0; i < nr_has; i++) {
                                *p++ = buf;
                                *buf++ = '^';
-                               memcpy(buf, sha1_to_hex(has_sha1[i]), 41);
+                               memcpy(buf, sha1_to_hex(has_tip[i]->sha1), 41);
                                buf += 41;
                        }
                *p++ = NULL;
@@ -336,7 +336,7 @@ static int got_sha1(char *hex, unsigned char *sha1)
                             parents = parents->next)
                                parents->item->object.flags |= THEY_HAVE;
                }
-               memcpy(has_sha1[nr_has++], sha1, 20);
+               has_tip[nr_has++] = o;
        }
        return 1;
 }
@@ -395,23 +395,21 @@ static int receive_needs(void)
        needs = 0;
        for (;;) {
                struct object *o;
-               unsigned char dummy[20], *sha1_buf;
+               unsigned char sha1_buf[20];
                len = packet_read_line(0, line, sizeof(line));
                reset_timeout();
                if (!len)
                        return needs;
 
-               sha1_buf = dummy;
                if (needs == MAX_NEEDS) {
                        fprintf(stderr,
                                "warning: supporting only a max of %d requests. "
                                "sending everything instead.\n",
                                MAX_NEEDS);
                }
-               else if (needs < MAX_NEEDS)
-                       sha1_buf = needs_sha1[needs];
 
-               if (strncmp("want ", line, 5) || get_sha1_hex(line+5, sha1_buf))
+               if (strncmp("want ", line, 5) ||
+                   get_sha1_hex(line+5, sha1_buf))
                        die("git-upload-pack: protocol error, "
                            "expected to get sha, not '%s'", line);
                if (strstr(line+45, "multi_ack"))
@@ -434,6 +432,8 @@ static int receive_needs(void)
                        die("git-upload-pack: not our ref %s", line+5);
                if (!(o->flags & WANTED)) {
                        o->flags |= WANTED;
+                       if (needs < MAX_NEEDS)
+                               needs_tip[needs] = o;
                        needs++;
                }
        }