MSVC: Add support for building with NO_MMAP

[thirdparty/git.git] / builtin-fetch.c

diff --git a/builtin-fetch.c b/builtin-fetch.c
index 1f7a3f1ce66434a84ff96ef352245862fe088a70..cb48c57ca3e66b7ec39a98128b2cfb058c2dad15 100644 (file)
--- a/builtin-fetch.c
+++ b/builtin-fetch.c
@@ -202,7 +202,7 @@ static int update_local_ref(struct ref *ref,
        struct commit *current = NULL, *updated;
        enum object_type type;
        struct branch *current_branch = branch_get(NULL);
-       const char *pretty_ref = prettify_ref(ref);
+       const char *pretty_ref = prettify_refname(ref->name);
 
        *display = 0;
        type = sha1_object_info(ref->new_sha1, NULL);
@@ -294,7 +294,7 @@ static int update_local_ref(struct ref *ref,
        }
 }
 
-static int store_updated_refs(const char *url, const char *remote_name,
+static int store_updated_refs(const char *raw_url, const char *remote_name,
                struct ref *ref_map)
 {
        FILE *fp;
@@ -303,11 +303,13 @@ static int store_updated_refs(const char *url, const char *remote_name,
        char note[1024];
        const char *what, *kind;
        struct ref *rm;
-       char *filename = git_path("FETCH_HEAD");
+       char *url, *filename = git_path("FETCH_HEAD");
 
        fp = fopen(filename, "a");
        if (!fp)
                return error("cannot open %s: %s\n", filename, strerror(errno));
+
+       url = transport_anonymize_url(raw_url);
        for (rm = ref_map; rm; rm = rm->next) {
                struct ref *ref = NULL;
 
@@ -358,12 +360,18 @@ static int store_updated_refs(const char *url, const char *remote_name,
                                                    kind);
                        note_len += sprintf(note + note_len, "'%s' of ", what);
                }
-               note_len += sprintf(note + note_len, "%.*s", url_len, url);
-               fprintf(fp, "%s\t%s\t%s\n",
+               note[note_len] = '\0';
+               fprintf(fp, "%s\t%s\t%s",
                        sha1_to_hex(commit ? commit->object.sha1 :
                                    rm->old_sha1),
                        rm->merge ? "" : "not-for-merge",
                        note);
+               for (i = 0; i < url_len; ++i)
+                       if ('\n' == url[i])
+                               fputs("\\n", fp);
+                       else
+                               fputc(url[i], fp);
+               fputc('\n', fp);
 
                if (ref)
                        rc |= update_local_ref(ref, what, note);
@@ -381,6 +389,7 @@ static int store_updated_refs(const char *url, const char *remote_name,
                                fprintf(stderr, " %s\n", note);
                }
        }
+       free(url);
        fclose(fp);
        if (rc & STORE_REF_ERROR_DF_CONFLICT)
                error("some local refs could not be updated; try running\n"
@@ -391,14 +400,14 @@ static int store_updated_refs(const char *url, const char *remote_name,
 
 /*
  * We would want to bypass the object transfer altogether if
- * everything we are going to fetch already exists and connected
+ * everything we are going to fetch already exists and is connected
  * locally.
  *
- * The refs we are going to fetch are in to_fetch (nr_heads in
- * total).  If running
+ * The refs we are going to fetch are in ref_map.  If running
  *
- *  $ git rev-list --objects to_fetch[0] to_fetch[1] ... --not --all
+ *  $ git rev-list --objects --stdin --not --all
  *
+ * (feeding all the refs in ref_map on its standard input)
  * does not error out, that means everything reachable from the
  * refs we are going to fetch exists and is connected to some of
  * our existing refs.
@@ -407,8 +416,9 @@ static int quickfetch(struct ref *ref_map)
 {
        struct child_process revlist;
        struct ref *ref;
-       char **argv;
-       int i, err;
+       int err;
+       const char *argv[] = {"rev-list",
+               "--quiet", "--objects", "--stdin", "--not", "--all", NULL};
 
        /*
         * If we are deepening a shallow clone we already have these
@@ -420,34 +430,46 @@ static int quickfetch(struct ref *ref_map)
        if (depth)
                return -1;
 
-       for (i = 0, ref = ref_map; ref; ref = ref->next)
-               i++;
-       if (!i)
+       if (!ref_map)
                return 0;
 
-       argv = xmalloc(sizeof(*argv) * (i + 6));
-       i = 0;
-       argv[i++] = xstrdup("rev-list");
-       argv[i++] = xstrdup("--quiet");
-       argv[i++] = xstrdup("--objects");
-       for (ref = ref_map; ref; ref = ref->next)
-               argv[i++] = xstrdup(sha1_to_hex(ref->old_sha1));
-       argv[i++] = xstrdup("--not");
-       argv[i++] = xstrdup("--all");
-       argv[i++] = NULL;
-
        memset(&revlist, 0, sizeof(revlist));
-       revlist.argv = (const char**)argv;
+       revlist.argv = argv;
        revlist.git_cmd = 1;
-       revlist.no_stdin = 1;
        revlist.no_stdout = 1;
        revlist.no_stderr = 1;
-       err = run_command(&revlist);
+       revlist.in = -1;
+
+       err = start_command(&revlist);
+       if (err) {
+               error("could not run rev-list");
+               return err;
+       }
+
+       /*
+        * If rev-list --stdin encounters an unknown commit, it terminates,
+        * which will cause SIGPIPE in the write loop below.
+        */
+       sigchain_push(SIGPIPE, SIG_IGN);
+
+       for (ref = ref_map; ref; ref = ref->next) {
+               if (write_in_full(revlist.in, sha1_to_hex(ref->old_sha1), 40) < 0 ||
+                   write_str_in_full(revlist.in, "\n") < 0) {
+                       if (errno != EPIPE && errno != EINVAL)
+                               error("failed write to rev-list: %s", strerror(errno));
+                       err = -1;
+                       break;
+               }
+       }
+
+       if (close(revlist.in)) {
+               error("failed to close rev-list's stdin: %s", strerror(errno));
+               err = -1;
+       }
+
+       sigchain_pop(SIGPIPE);
 
-       for (i = 0; argv[i]; i++)
-               free(argv[i]);
-       free(argv);
-       return err;
+       return finish_command(&revlist) || err;
 }
 
 static int fetch_refs(struct transport *transport, struct ref *ref_map)
@@ -630,7 +652,7 @@ int cmd_fetch(int argc, const char **argv, const char *prefix)
        for (i = 1; i < argc; i++)
                strbuf_addf(&default_rla, " %s", argv[i]);
 
-       argc = parse_options(argc, argv,
+       argc = parse_options(argc, argv, prefix,
                             builtin_fetch_options, builtin_fetch_usage, 0);
 
        if (argc == 0)