interdiff: teach show_interdiff() to indent interdiff
[gitweb.git] / builtin / clone.c
index f7e17d22951cfd8e498143c009fa0303d0ff8319..1d939af9d8cb93bd233549c44d891f3f9df803cc 100644 (file)
@@ -14,6 +14,8 @@
 #include "parse-options.h"
 #include "fetch-pack.h"
 #include "refs.h"
+#include "refspec.h"
+#include "object-store.h"
 #include "tree.h"
 #include "tree-walk.h"
 #include "unpack-trees.h"
@@ -25,6 +27,9 @@
 #include "remote.h"
 #include "run-command.h"
 #include "connected.h"
+#include "packfile.h"
+#include "list-objects-filter-options.h"
+#include "object-store.h"
 
 /*
  * Overall FIXMEs:
@@ -59,6 +64,7 @@ static struct string_list option_optional_reference = STRING_LIST_INIT_NODUP;
 static int option_dissociate;
 static int max_jobs = -1;
 static struct string_list option_recurse_submodules = STRING_LIST_INIT_NODUP;
+static struct list_objects_filter_options filter_options;
 
 static int recurse_submodules_cb(const struct option *opt,
                                 const char *arg, int unset)
@@ -134,6 +140,7 @@ static struct option builtin_clone_options[] = {
                        TRANSPORT_FAMILY_IPV4),
        OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
                        TRANSPORT_FAMILY_IPV6),
+       OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
        OPT_END()
 };
 
@@ -451,7 +458,8 @@ static void clone_local(const char *src_repo, const char *dest_repo)
 {
        if (option_shared) {
                struct strbuf alt = STRBUF_INIT;
-               strbuf_addf(&alt, "%s/objects", src_repo);
+               get_common_dir(&alt, src_repo);
+               strbuf_addstr(&alt, "/objects");
                add_to_alternates_file(alt.buf);
                strbuf_release(&alt);
        } else {
@@ -471,7 +479,9 @@ static void clone_local(const char *src_repo, const char *dest_repo)
 }
 
 static const char *junk_work_tree;
+static int junk_work_tree_flags;
 static const char *junk_git_dir;
+static int junk_git_dir_flags;
 static enum {
        JUNK_LEAVE_NONE,
        JUNK_LEAVE_REPO,
@@ -500,14 +510,14 @@ static void remove_junk(void)
 
        if (junk_git_dir) {
                strbuf_addstr(&sb, junk_git_dir);
-               remove_dir_recursively(&sb, 0);
+               remove_dir_recursively(&sb, junk_git_dir_flags);
                strbuf_reset(&sb);
        }
        if (junk_work_tree) {
                strbuf_addstr(&sb, junk_work_tree);
-               remove_dir_recursively(&sb, 0);
-               strbuf_reset(&sb);
+               remove_dir_recursively(&sb, junk_work_tree_flags);
        }
+       strbuf_release(&sb);
 }
 
 static void remove_junk_on_signal(int signo)
@@ -538,7 +548,7 @@ static struct ref *find_remote_branch(const struct ref *refs, const char *branch
 }
 
 static struct ref *wanted_peer_refs(const struct ref *refs,
-               struct refspec *refspec)
+               struct refspec_item *refspec)
 {
        struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD"));
        struct ref *local_refs = head;
@@ -587,7 +597,7 @@ static void write_remote_refs(const struct ref *local_refs)
        for (r = local_refs; r; r = r->next) {
                if (!r->peer_ref)
                        continue;
-               if (ref_transaction_create(t, r->peer_ref->name, r->old_oid.hash,
+               if (ref_transaction_create(t, r->peer_ref->name, &r->old_oid,
                                           0, NULL, &err))
                        die("%s", err.buf);
        }
@@ -609,12 +619,12 @@ static void write_followtags(const struct ref *refs, const char *msg)
                        continue;
                if (!has_object_file(&ref->old_oid))
                        continue;
-               update_ref(msg, ref->name, ref->old_oid.hash,
-                          NULL, 0, UPDATE_REFS_DIE_ON_ERR);
+               update_ref(msg, ref->name, &ref->old_oid, NULL, 0,
+                          UPDATE_REFS_DIE_ON_ERR);
        }
 }
 
-static int iterate_ref_map(void *cb_data, unsigned char sha1[20])
+static int iterate_ref_map(void *cb_data, struct object_id *oid)
 {
        struct ref **rm = cb_data;
        struct ref *ref = *rm;
@@ -629,7 +639,7 @@ static int iterate_ref_map(void *cb_data, unsigned char sha1[20])
        if (!ref)
                return -1;
 
-       hashcpy(sha1, ref->old_oid.hash);
+       oidcpy(oid, &ref->old_oid);
        *rm = ref->next;
        return 0;
 }
@@ -681,23 +691,23 @@ static void update_head(const struct ref *our, const struct ref *remote,
                if (create_symref("HEAD", our->name, NULL) < 0)
                        die(_("unable to update HEAD"));
                if (!option_bare) {
-                       update_ref(msg, "HEAD", our->old_oid.hash, NULL, 0,
+                       update_ref(msg, "HEAD", &our->old_oid, NULL, 0,
                                   UPDATE_REFS_DIE_ON_ERR);
                        install_branch_config(0, head, option_origin, our->name);
                }
        } else if (our) {
                struct commit *c = lookup_commit_reference(&our->old_oid);
                /* --branch specifies a non-branch (i.e. tags), detach HEAD */
-               update_ref(msg, "HEAD", c->object.oid.hash,
-                          NULL, REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
+               update_ref(msg, "HEAD", &c->object.oid, NULL, REF_NO_DEREF,
+                          UPDATE_REFS_DIE_ON_ERR);
        } else if (remote) {
                /*
                 * We know remote HEAD points to a non-branch, or
                 * HEAD points to a branch but we don't know which one.
                 * Detach HEAD in all these cases.
                 */
-               update_ref(msg, "HEAD", remote->old_oid.hash,
-                          NULL, REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
+               update_ref(msg, "HEAD", &remote->old_oid, NULL, REF_NO_DEREF,
+                          UPDATE_REFS_DIE_ON_ERR);
        }
 }
 
@@ -705,7 +715,7 @@ static int checkout(int submodule_progress)
 {
        struct object_id oid;
        char *head;
-       struct lock_file *lock_file;
+       struct lock_file lock_file = LOCK_INIT;
        struct unpack_trees_options opts;
        struct tree *tree;
        struct tree_desc t;
@@ -714,7 +724,7 @@ static int checkout(int submodule_progress)
        if (option_no_checkout)
                return 0;
 
-       head = resolve_refdup("HEAD", RESOLVE_REF_READING, oid.hash, NULL);
+       head = resolve_refdup("HEAD", RESOLVE_REF_READING, &oid, NULL);
        if (!head) {
                warning(_("remote HEAD refers to nonexistent ref, "
                          "unable to checkout.\n"));
@@ -732,8 +742,7 @@ static int checkout(int submodule_progress)
        /* We need to be in the new work tree for the checkout */
        setup_work_tree();
 
-       lock_file = xcalloc(1, sizeof(struct lock_file));
-       hold_locked_index(lock_file, LOCK_DIE_ON_ERROR);
+       hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
 
        memset(&opts, 0, sizeof opts);
        opts.update = 1;
@@ -749,7 +758,7 @@ static int checkout(int submodule_progress)
        if (unpack_trees(1, &t, &opts) < 0)
                die(_("unable to checkout working tree"));
 
-       if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
+       if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
                die(_("unable to write new index file"));
 
        err |= run_hook_le(NULL, "post-checkout", sha1_to_hex(null_sha1),
@@ -816,7 +825,7 @@ static void write_refspec_config(const char *src_ref_prefix,
                        } else if (remote_head_points_at) {
                                const char *head = remote_head_points_at->name;
                                if (!skip_prefix(head, "refs/heads/", &head))
-                                       die("BUG: remote HEAD points at non-head?");
+                                       BUG("remote HEAD points at non-head?");
 
                                strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name,
                                                branch_top->buf, head);
@@ -862,10 +871,15 @@ static void dissociate_from_references(void)
        free(alternates);
 }
 
+static int dir_exists(const char *path)
+{
+       struct stat sb;
+       return !stat(path, &sb);
+}
+
 int cmd_clone(int argc, const char **argv, const char *prefix)
 {
        int is_bundle = 0, is_local;
-       struct stat buf;
        const char *repo_name, *repo, *work_tree, *git_dir;
        char *path, *dir;
        int dest_exists;
@@ -882,8 +896,9 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        int err = 0, complete_refs_before_fetch = 1;
        int submodule_progress;
 
-       struct refspec *refspec;
-       const char *fetch_pattern;
+       struct refspec_item refspec;
+
+       fetch_if_missing = 0;
 
        packet_trace_identity("clone");
        argc = parse_options(argc, argv, prefix, builtin_clone_options,
@@ -937,7 +952,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                dir = guess_dir_name(repo_name, is_bundle, option_bare);
        strip_trailing_slashes(dir);
 
-       dest_exists = !stat(dir, &buf);
+       dest_exists = dir_exists(dir);
        if (dest_exists && !is_empty_dir(dir))
                die(_("destination path '%s' already exists and is not "
                        "an empty directory."), dir);
@@ -948,7 +963,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                work_tree = NULL;
        else {
                work_tree = getenv("GIT_WORK_TREE");
-               if (work_tree && !stat(work_tree, &buf))
+               if (work_tree && dir_exists(work_tree))
                        die(_("working tree '%s' already exists."), work_tree);
        }
 
@@ -966,14 +981,24 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                if (safe_create_leading_directories_const(work_tree) < 0)
                        die_errno(_("could not create leading directories of '%s'"),
                                  work_tree);
-               if (!dest_exists && mkdir(work_tree, 0777))
+               if (dest_exists)
+                       junk_work_tree_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
+               else if (mkdir(work_tree, 0777))
                        die_errno(_("could not create work tree dir '%s'"),
                                  work_tree);
                junk_work_tree = work_tree;
                set_git_work_tree(work_tree);
        }
 
-       junk_git_dir = real_git_dir ? real_git_dir : git_dir;
+       if (real_git_dir) {
+               if (dir_exists(real_git_dir))
+                       junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
+               junk_git_dir = real_git_dir;
+       } else {
+               if (dest_exists)
+                       junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
+               junk_git_dir = git_dir;
+       }
        if (safe_create_leading_directories_const(git_dir) < 0)
                die(_("could not create leading directories of '%s'"), git_dir);
 
@@ -1053,8 +1078,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        if (option_required_reference.nr || option_optional_reference.nr)
                setup_reference();
 
-       fetch_pattern = value.buf;
-       refspec = parse_fetch_refspec(1, &fetch_pattern);
+       refspec_item_init_or_die(&refspec, value.buf, REFSPEC_FETCH);
 
        strbuf_reset(&value);
 
@@ -1072,6 +1096,8 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                        warning(_("--shallow-since is ignored in local clones; use file:// instead."));
                if (option_not.nr)
                        warning(_("--shallow-exclude is ignored in local clones; use file:// instead."));
+               if (filter_options.choice)
+                       warning(_("--filter is ignored in local clones; use file:// instead."));
                if (!access(mkpath("%s/shallow", path), F_OK)) {
                        if (option_local > 0)
                                warning(_("source repository is shallow, ignoring --local"));
@@ -1082,9 +1108,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                warning(_("--local is ignored"));
        transport->cloning = 1;
 
-       if (!transport->get_refs_list || (!is_local && !transport->fetch))
-               die(_("Don't know how to clone %s"), transport->url);
-
        transport_set_option(transport, TRANS_OPT_KEEP, "yes");
 
        if (option_depth)
@@ -1103,13 +1126,19 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                transport_set_option(transport, TRANS_OPT_UPLOADPACK,
                                     option_upload_pack);
 
-       if (transport->smart_options && !deepen)
+       if (filter_options.choice) {
+               transport_set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
+                                    filter_options.filter_spec);
+               transport_set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
+       }
+
+       if (transport->smart_options && !deepen && !filter_options.choice)
                transport->smart_options->check_self_contained_and_connected = 1;
 
-       refs = transport_get_remote_refs(transport);
+       refs = transport_get_remote_refs(transport, NULL);
 
        if (refs) {
-               mapped_refs = wanted_peer_refs(refs, refspec);
+               mapped_refs = wanted_peer_refs(refs, &refspec);
                /*
                 * transport_get_remote_refs() may return refs with null sha-1
                 * in mapped_refs (see struct transport->get_refs_list
@@ -1163,13 +1192,17 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        write_refspec_config(src_ref_prefix, our_head_points_at,
                        remote_head_points_at, &branch_top);
 
+       if (filter_options.choice)
+               partial_clone_register("origin", &filter_options);
+
        if (is_local)
                clone_local(path, git_dir);
        else if (refs && complete_refs_before_fetch)
                transport_fetch_refs(transport, mapped_refs);
 
        update_remote_refs(refs, mapped_refs, remote_head_points_at,
-                          branch_top.buf, reflog_msg.buf, transport, !is_local);
+                          branch_top.buf, reflog_msg.buf, transport,
+                          !is_local && !filter_options.choice);
 
        update_head(our_head_points_at, remote_head, reflog_msg.buf);
 
@@ -1185,11 +1218,12 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        transport_disconnect(transport);
 
        if (option_dissociate) {
-               close_all_packs();
+               close_all_packs(the_repository->objects);
                dissociate_from_references();
        }
 
        junk_mode = JUNK_LEAVE_REPO;
+       fetch_if_missing = 1;
        err = checkout(submodule_progress);
 
        strbuf_release(&reflog_msg);
@@ -1198,6 +1232,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        strbuf_release(&value);
        junk_mode = JUNK_LEAVE_ALL;
 
-       free(refspec);
+       refspec_item_clear(&refspec);
        return err;
 }