git-daemon: produce output when ready

diff --git a/builtin/fetch.c b/builtin/fetch.c
index 33ad3aad2c99116a237d7e7d11dab22fcf4295b1..0481c169ca5efd71b1b54133c69809507cb3623a 100644 (file)
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -377,6 +377,7 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
        const char *what, *kind;
        struct ref *rm;
        char *url, *filename = dry_run ? "/dev/null" : git_path("FETCH_HEAD");
+       int want_merge;
 
        fp = fopen(filename, "a");
        if (!fp)
@@ -393,84 +394,95 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
                goto abort;
        }
 
-       for (rm = ref_map; rm; rm = rm->next) {
-               struct ref *ref = NULL;
-
-               if (rm->peer_ref) {
-                       ref = xcalloc(1, sizeof(*ref) + strlen(rm->peer_ref->name) + 1);
-                       strcpy(ref->name, rm->peer_ref->name);
-                       hashcpy(ref->old_sha1, rm->peer_ref->old_sha1);
-                       hashcpy(ref->new_sha1, rm->old_sha1);
-                       ref->force = rm->peer_ref->force;
-               }
+       /*
+        * The first pass writes objects to be merged and then the
+        * second pass writes the rest, in order to allow using
+        * FETCH_HEAD as a refname to refer to the ref to be merged.
+        */
+       for (want_merge = 1; 0 <= want_merge; want_merge--) {
+               for (rm = ref_map; rm; rm = rm->next) {
+                       struct ref *ref = NULL;
+
+                       commit = lookup_commit_reference_gently(rm->old_sha1, 1);
+                       if (!commit)
+                               rm->merge = 0;
+
+                       if (rm->merge != want_merge)
+                               continue;
+
+                       if (rm->peer_ref) {
+                               ref = xcalloc(1, sizeof(*ref) + strlen(rm->peer_ref->name) + 1);
+                               strcpy(ref->name, rm->peer_ref->name);
+                               hashcpy(ref->old_sha1, rm->peer_ref->old_sha1);
+                               hashcpy(ref->new_sha1, rm->old_sha1);
+                               ref->force = rm->peer_ref->force;
+                       }
 
-               commit = lookup_commit_reference_gently(rm->old_sha1, 1);
-               if (!commit)
-                       rm->merge = 0;
 
-               if (!strcmp(rm->name, "HEAD")) {
-                       kind = "";
-                       what = "";
-               }
-               else if (!prefixcmp(rm->name, "refs/heads/")) {
-                       kind = "branch";
-                       what = rm->name + 11;
-               }
-               else if (!prefixcmp(rm->name, "refs/tags/")) {
-                       kind = "tag";
-                       what = rm->name + 10;
-               }
-               else if (!prefixcmp(rm->name, "refs/remotes/")) {
-                       kind = "remote-tracking branch";
-                       what = rm->name + 13;
-               }
-               else {
-                       kind = "";
-                       what = rm->name;
-               }
+                       if (!strcmp(rm->name, "HEAD")) {
+                               kind = "";
+                               what = "";
+                       }
+                       else if (!prefixcmp(rm->name, "refs/heads/")) {
+                               kind = "branch";
+                               what = rm->name + 11;
+                       }
+                       else if (!prefixcmp(rm->name, "refs/tags/")) {
+                               kind = "tag";
+                               what = rm->name + 10;
+                       }
+                       else if (!prefixcmp(rm->name, "refs/remotes/")) {
+                               kind = "remote-tracking branch";
+                               what = rm->name + 13;
+                       }
+                       else {
+                               kind = "";
+                               what = rm->name;
+                       }
 
-               url_len = strlen(url);
-               for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
-                       ;
-               url_len = i + 1;
-               if (4 < i && !strncmp(".git", url + i - 3, 4))
-                       url_len = i - 3;
-
-               strbuf_reset(&note);
-               if (*what) {
-                       if (*kind)
-                               strbuf_addf(&note, "%s ", kind);
-                       strbuf_addf(&note, "'%s' of ", what);
-               }
-               fprintf(fp, "%s\t%s\t%s",
-                       sha1_to_hex(rm->old_sha1),
-                       rm->merge ? "" : "not-for-merge",
-                       note.buf);
-               for (i = 0; i < url_len; ++i)
-                       if ('\n' == url[i])
-                               fputs("\\n", fp);
-                       else
-                               fputc(url[i], fp);
-               fputc('\n', fp);
-
-               strbuf_reset(&note);
-               if (ref) {
-                       rc |= update_local_ref(ref, what, &note);
-                       free(ref);
-               } else
-                       strbuf_addf(&note, "* %-*s %-*s -> FETCH_HEAD",
-                                   TRANSPORT_SUMMARY_WIDTH,
-                                   *kind ? kind : "branch",
-                                   REFCOL_WIDTH,
-                                   *what ? what : "HEAD");
-               if (note.len) {
-                       if (verbosity >= 0 && !shown_url) {
-                               fprintf(stderr, _("From %.*s\n"),
-                                               url_len, url);
-                               shown_url = 1;
+                       url_len = strlen(url);
+                       for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
+                               ;
+                       url_len = i + 1;
+                       if (4 < i && !strncmp(".git", url + i - 3, 4))
+                               url_len = i - 3;
+
+                       strbuf_reset(&note);
+                       if (*what) {
+                               if (*kind)
+                                       strbuf_addf(&note, "%s ", kind);
+                               strbuf_addf(&note, "'%s' of ", what);
+                       }
+                       fprintf(fp, "%s\t%s\t%s",
+                               sha1_to_hex(rm->old_sha1),
+                               rm->merge ? "" : "not-for-merge",
+                               note.buf);
+                       for (i = 0; i < url_len; ++i)
+                               if ('\n' == url[i])
+                                       fputs("\\n", fp);
+                               else
+                                       fputc(url[i], fp);
+                       fputc('\n', fp);
+
+                       strbuf_reset(&note);
+                       if (ref) {
+                               rc |= update_local_ref(ref, what, &note);
+                               free(ref);
+                       } else
+                               strbuf_addf(&note, "* %-*s %-*s -> FETCH_HEAD",
+                                           TRANSPORT_SUMMARY_WIDTH,
+                                           *kind ? kind : "branch",
+                                           REFCOL_WIDTH,
+                                           *what ? what : "HEAD");
+                       if (note.len) {
+                               if (verbosity >= 0 && !shown_url) {
+                                       fprintf(stderr, _("From %.*s\n"),
+                                                       url_len, url);
+                                       shown_url = 1;
+                               }
+                               if (verbosity >= 0)
+                                       fprintf(stderr, " %s\n", note.buf);
                        }
-                       if (verbosity >= 0)
-                               fprintf(stderr, " %s\n", note.buf);
                }
        }