dir.c: unify is_excluded and is_path_excluded APIs
[gitweb.git] / builtin / clone.c
index 5a9b2bce2495cac1a343b10300804867e0f067e7..f9c380eb6c536b657ddc65b88f6839ec761f7f25 100644 (file)
@@ -23,6 +23,7 @@
 #include "branch.h"
 #include "remote.h"
 #include "run-command.h"
+#include "connected.h"
 
 /*
  * Overall FIXMEs:
@@ -376,10 +377,32 @@ static void clone_local(const char *src_repo, const char *dest_repo)
 static const char *junk_work_tree;
 static const char *junk_git_dir;
 static pid_t junk_pid;
+enum {
+       JUNK_LEAVE_NONE,
+       JUNK_LEAVE_REPO,
+       JUNK_LEAVE_ALL
+} junk_mode = JUNK_LEAVE_NONE;
+
+static const char junk_leave_repo_msg[] =
+N_("Clone succeeded, but checkout failed.\n"
+   "You can inspect what was checked out with 'git status'\n"
+   "and retry the checkout with 'git checkout -f HEAD'\n");
 
 static void remove_junk(void)
 {
        struct strbuf sb = STRBUF_INIT;
+
+       switch (junk_mode) {
+       case JUNK_LEAVE_REPO:
+               warning("%s", _(junk_leave_repo_msg));
+               /* fall-through */
+       case JUNK_LEAVE_ALL:
+               return;
+       default:
+               /* proceed to removal */
+               break;
+       }
+
        if (getpid() != junk_pid)
                return;
        if (junk_git_dir) {
@@ -485,12 +508,37 @@ static void write_followtags(const struct ref *refs, const char *msg)
        }
 }
 
+static int iterate_ref_map(void *cb_data, unsigned char sha1[20])
+{
+       struct ref **rm = cb_data;
+       struct ref *ref = *rm;
+
+       /*
+        * Skip anything missing a peer_ref, which we are not
+        * actually going to write a ref for.
+        */
+       while (ref && !ref->peer_ref)
+               ref = ref->next;
+       /* Returning -1 notes "end of list" to the caller. */
+       if (!ref)
+               return -1;
+
+       hashcpy(sha1, ref->old_sha1);
+       *rm = ref->next;
+       return 0;
+}
+
 static void update_remote_refs(const struct ref *refs,
                               const struct ref *mapped_refs,
                               const struct ref *remote_head_points_at,
                               const char *branch_top,
                               const char *msg)
 {
+       const struct ref *rm = mapped_refs;
+
+       if (check_everything_connected(iterate_ref_map, 0, &rm))
+               die(_("remote did not send all necessary objects"));
+
        if (refs) {
                write_remote_refs(mapped_refs);
                if (option_single_branch)
@@ -579,7 +627,8 @@ static int checkout(void)
        tree = parse_tree_indirect(sha1);
        parse_tree(tree);
        init_tree_desc(&t, tree->buffer, tree->size);
-       unpack_trees(1, &t, &opts);
+       if (unpack_trees(1, &t, &opts) < 0)
+               die(_("unable to checkout working tree"));
 
        if (write_cache(fd, active_cache, active_nr) ||
            commit_locked_index(lock_file))
@@ -610,6 +659,54 @@ static void write_config(struct string_list *config)
        }
 }
 
+static void write_refspec_config(const char* src_ref_prefix,
+               const struct ref* our_head_points_at,
+               const struct ref* remote_head_points_at, struct strbuf* branch_top)
+{
+       struct strbuf key = STRBUF_INIT;
+       struct strbuf value = STRBUF_INIT;
+
+       if (option_mirror || !option_bare) {
+               if (option_single_branch && !option_mirror) {
+                       if (option_branch) {
+                               if (strstr(our_head_points_at->name, "refs/tags/"))
+                                       strbuf_addf(&value, "+%s:%s", our_head_points_at->name,
+                                               our_head_points_at->name);
+                               else
+                                       strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name,
+                                               branch_top->buf, option_branch);
+                       } else if (remote_head_points_at) {
+                               strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name,
+                                               branch_top->buf,
+                                               skip_prefix(remote_head_points_at->name, "refs/heads/"));
+                       }
+                       /*
+                        * otherwise, the next "git fetch" will
+                        * simply fetch from HEAD without updating
+                        * any remote tracking branch, which is what
+                        * we want.
+                        */
+               } else {
+                       strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top->buf);
+               }
+               /* Configure the remote */
+               if (value.len) {
+                       strbuf_addf(&key, "remote.%s.fetch", option_origin);
+                       git_config_set_multivar(key.buf, value.buf, "^$", 0);
+                       strbuf_reset(&key);
+
+                       if (option_mirror) {
+                               strbuf_addf(&key, "remote.%s.mirror", option_origin);
+                               git_config_set(key.buf, "true");
+                               strbuf_reset(&key);
+                       }
+               }
+       }
+
+       strbuf_release(&key);
+       strbuf_release(&value);
+}
+
 int cmd_clone(int argc, const char **argv, const char *prefix)
 {
        int is_bundle = 0, is_local;
@@ -656,6 +753,8 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                if (option_origin)
                        die(_("--bare and --origin %s options are incompatible."),
                            option_origin);
+               if (real_git_dir)
+                       die(_("--bare and --separate-git-dir are incompatible."));
                option_no_checkout = 1;
        }
 
@@ -717,14 +816,14 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        atexit(remove_junk);
        sigchain_push_common(remove_junk_on_signal);
 
-       setenv(CONFIG_ENVIRONMENT, mkpath("%s/config", git_dir), 1);
-
        if (safe_create_leading_directories_const(git_dir) < 0)
                die(_("could not create leading directories of '%s'"), git_dir);
 
        set_git_dir_init(git_dir, real_git_dir, 0);
-       if (real_git_dir)
+       if (real_git_dir) {
                git_dir = real_git_dir;
+               junk_git_dir = real_git_dir;
+       }
 
        if (0 <= option_verbosity) {
                if (option_bare)
@@ -735,13 +834,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        init_db(option_template, INIT_DB_QUIET);
        write_config(&option_config);
 
-       /*
-        * At this point, the config exists, so we do not need the
-        * environment variable.  We actually need to unset it, too, to
-        * re-enable parsing of the global configs.
-        */
-       unsetenv(CONFIG_ENVIRONMENT);
-
        git_config(git_default_config, NULL);
 
        if (option_bare) {
@@ -755,20 +847,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        }
 
        strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf);
-
-       if (option_mirror || !option_bare) {
-               /* Configure the remote */
-               strbuf_addf(&key, "remote.%s.fetch", option_origin);
-               git_config_set_multivar(key.buf, value.buf, "^$", 0);
-               strbuf_reset(&key);
-
-               if (option_mirror) {
-                       strbuf_addf(&key, "remote.%s.mirror", option_origin);
-                       git_config_set(key.buf, "true");
-                       strbuf_reset(&key);
-               }
-       }
-
        strbuf_addf(&key, "remote.%s.url", option_origin);
        git_config_set(key.buf, repo);
        strbuf_reset(&key);
@@ -853,6 +931,9 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                                              "refs/heads/master");
        }
 
+       write_refspec_config(src_ref_prefix, our_head_points_at,
+                       remote_head_points_at, &branch_top);
+
        if (is_local)
                clone_local(path, git_dir);
        else if (refs && complete_refs_before_fetch)
@@ -866,12 +947,13 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        transport_unlock_pack(transport);
        transport_disconnect(transport);
 
+       junk_mode = JUNK_LEAVE_REPO;
        err = checkout();
 
        strbuf_release(&reflog_msg);
        strbuf_release(&branch_top);
        strbuf_release(&key);
        strbuf_release(&value);
-       junk_pid = 0;
+       junk_mode = JUNK_LEAVE_ALL;
        return err;
 }