builtin-blame: set up the work_tree before the first file access
[gitweb.git] / send-pack.c
index 9fc8a812f4c526d61e3acb8183b8b8da0e36895c..b74fd454f2f09d23ffde7db015d4a7458dfcd348 100644 (file)
@@ -7,13 +7,14 @@
 #include "remote.h"
 
 static const char send_pack_usage[] =
-"git-send-pack [--all] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
+"git-send-pack [--all] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
 "  --all and explicit <ref> specification are mutually exclusive.";
 static const char *receivepack = "git-receive-pack";
 static int verbose;
 static int send_all;
 static int force_update;
 static int use_thin_pack;
+static int dry_run;
 
 /*
  * Make a pack stream and spit it out into file descriptor fd
@@ -177,6 +178,35 @@ static int receive_status(int in)
        return ret;
 }
 
+static void update_tracking_ref(struct remote *remote, struct ref *ref)
+{
+       struct refspec rs;
+       int will_delete_ref;
+
+       rs.src = ref->name;
+       rs.dst = NULL;
+
+       if (!ref->peer_ref)
+               return;
+
+       will_delete_ref = is_null_sha1(ref->peer_ref->new_sha1);
+
+       if (!will_delete_ref &&
+                       !hashcmp(ref->old_sha1, ref->peer_ref->new_sha1))
+               return;
+
+       if (!remote_find_tracking(remote, &rs)) {
+               fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
+               if (is_null_sha1(ref->peer_ref->new_sha1)) {
+                       if (delete_ref(rs.dst, NULL))
+                               error("Failed to delete");
+               } else
+                       update_ref("update by push", rs.dst,
+                                       ref->new_sha1, NULL, 0, 0);
+               free(rs.dst);
+       }
+}
+
 static int send_pack(int in, int out, struct remote *remote, int nr_refspec, char **refspec)
 {
        struct ref *ref;
@@ -204,7 +234,8 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha
                return -1;
 
        if (!remote_refs) {
-               fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
+               fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
+                       "Perhaps you should specify a branch such as 'master'.\n");
                return 0;
        }
 
@@ -266,9 +297,9 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha
                                 * commits at the remote end and likely
                                 * we were not up to date to begin with.
                                 */
-                               error("remote '%s' is not a strict "
-                                     "subset of local ref '%s'. "
-                                     "maybe you are not up-to-date and "
+                               error("remote '%s' is not an ancestor of\n"
+                                     " local  '%s'.\n"
+                                     " Maybe you are not up-to-date and "
                                      "need to pull first?",
                                      ref->name,
                                      ref->peer_ref->name);
@@ -282,16 +313,18 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha
                strcpy(old_hex, sha1_to_hex(ref->old_sha1));
                new_hex = sha1_to_hex(ref->new_sha1);
 
-               if (ask_for_status_report) {
-                       packet_write(out, "%s %s %s%c%s",
-                                    old_hex, new_hex, ref->name, 0,
-                                    "report-status");
-                       ask_for_status_report = 0;
-                       expect_status_report = 1;
+               if (!dry_run) {
+                       if (ask_for_status_report) {
+                               packet_write(out, "%s %s %s%c%s",
+                                       old_hex, new_hex, ref->name, 0,
+                                       "report-status");
+                               ask_for_status_report = 0;
+                               expect_status_report = 1;
+                       }
+                       else
+                               packet_write(out, "%s %s %s",
+                                       old_hex, new_hex, ref->name);
                }
-               else
-                       packet_write(out, "%s %s %s",
-                                    old_hex, new_hex, ref->name);
                if (will_delete_ref)
                        fprintf(stderr, "deleting '%s'\n", ref->name);
                else {
@@ -302,32 +335,10 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha
                        fprintf(stderr, "\n  from %s\n  to   %s\n",
                                old_hex, new_hex);
                }
-               if (remote) {
-                       struct refspec rs;
-                       rs.src = ref->name;
-                       rs.dst = NULL;
-                       if (!remote_find_tracking(remote, &rs)) {
-                               struct ref_lock *lock;
-                               fprintf(stderr, " Also local %s\n", rs.dst);
-                               if (will_delete_ref) {
-                                       if (delete_ref(rs.dst, NULL)) {
-                                               error("Failed to delete");
-                                       }
-                               } else {
-                                       lock = lock_any_ref_for_update(rs.dst, NULL, 0);
-                                       if (!lock)
-                                               error("Failed to lock");
-                                       else
-                                               write_ref_sha1(lock, ref->new_sha1,
-                                                              "update by push");
-                               }
-                               free(rs.dst);
-                       }
-               }
        }
 
        packet_flush(out);
-       if (new_refs)
+       if (new_refs && !dry_run)
                ret = pack_objects(out, remote_refs);
        close(out);
 
@@ -336,6 +347,11 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha
                        ret = -4;
        }
 
+       if (!dry_run && remote && ret == 0) {
+               for (ref = remote_refs; ref; ref = ref->next)
+                       update_tracking_ref(remote, ref);
+       }
+
        if (!new_refs && ret == 0)
                fprintf(stderr, "Everything up-to-date\n");
        return ret;
@@ -368,7 +384,7 @@ int main(int argc, char **argv)
        char *dest = NULL;
        char **heads = NULL;
        int fd[2], ret;
-       pid_t pid;
+       struct child_process *conn;
        char *remote_name = NULL;
        struct remote *remote = NULL;
 
@@ -396,6 +412,10 @@ int main(int argc, char **argv)
                                send_all = 1;
                                continue;
                        }
+                       if (!strcmp(arg, "--dry-run")) {
+                               dry_run = 1;
+                               continue;
+                       }
                        if (!strcmp(arg, "--force")) {
                                force_update = 1;
                                continue;
@@ -426,18 +446,16 @@ int main(int argc, char **argv)
 
        if (remote_name) {
                remote = remote_get(remote_name);
-               if (!remote_has_uri(remote, dest)) {
+               if (!remote_has_url(remote, dest)) {
                        die("Destination %s is not a uri for %s",
                            dest, remote_name);
                }
        }
 
-       pid = git_connect(fd, dest, receivepack, verbose ? CONNECT_VERBOSE : 0);
-       if (pid < 0)
-               return 1;
+       conn = git_connect(fd, dest, receivepack, verbose ? CONNECT_VERBOSE : 0);
        ret = send_pack(fd[0], fd[1], remote, nr_heads, heads);
        close(fd[0]);
        close(fd[1]);
-       ret |= finish_connect(pid);
+       ret |= finish_connect(conn);
        return !!ret;
 }