stash: convert branch to builtin
[gitweb.git] / builtin / pull.c
index 1b4d9cd97452a0945b54b233eadfaa784b91238b..1b90622b1311187612ef8b33995c92a6802eb343 100644 (file)
@@ -9,32 +9,36 @@
 #include "config.h"
 #include "builtin.h"
 #include "parse-options.h"
-#include "exec_cmd.h"
+#include "exec-cmd.h"
 #include "run-command.h"
 #include "sha1-array.h"
 #include "remote.h"
 #include "dir.h"
 #include "refs.h"
+#include "refspec.h"
 #include "revision.h"
 #include "submodule.h"
 #include "submodule-config.h"
 #include "tempfile.h"
 #include "lockfile.h"
 #include "wt-status.h"
+#include "commit-reach.h"
 
 enum rebase_type {
        REBASE_INVALID = -1,
        REBASE_FALSE = 0,
        REBASE_TRUE,
        REBASE_PRESERVE,
+       REBASE_MERGES,
        REBASE_INTERACTIVE
 };
 
 /**
  * Parses the value of --rebase. If value is a false value, returns
  * REBASE_FALSE. If value is a true value, returns REBASE_TRUE. If value is
- * "preserve", returns REBASE_PRESERVE. If value is a invalid value, dies with
- * a fatal error if fatal is true, otherwise returns REBASE_INVALID.
+ * "merges", returns REBASE_MERGES. If value is "preserve", returns
+ * REBASE_PRESERVE. If value is a invalid value, dies with a fatal error if
+ * fatal is true, otherwise returns REBASE_INVALID.
  */
 static enum rebase_type parse_config_rebase(const char *key, const char *value,
                int fatal)
@@ -45,9 +49,11 @@ static enum rebase_type parse_config_rebase(const char *key, const char *value,
                return REBASE_FALSE;
        else if (v > 0)
                return REBASE_TRUE;
-       else if (!strcmp(value, "preserve"))
+       else if (!strcmp(value, "preserve") || !strcmp(value, "p"))
                return REBASE_PRESERVE;
-       else if (!strcmp(value, "interactive"))
+       else if (!strcmp(value, "merges") || !strcmp(value, "m"))
+               return REBASE_MERGES;
+       else if (!strcmp(value, "interactive") || !strcmp(value, "i"))
                return REBASE_INTERACTIVE;
 
        if (fatal)
@@ -86,6 +92,7 @@ static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
 static enum rebase_type opt_rebase = -1;
 static char *opt_diffstat;
 static char *opt_log;
+static char *opt_signoff;
 static char *opt_squash;
 static char *opt_commit;
 static char *opt_edit;
@@ -129,7 +136,7 @@ static struct option pull_options[] = {
        /* Options passed to git-merge or git-rebase */
        OPT_GROUP(N_("Options related to merging")),
        { OPTION_CALLBACK, 'r', "rebase", &opt_rebase,
-         "false|true|preserve|interactive",
+         "(false|true|merges|preserve|interactive)",
          N_("incorporate changes by rebasing rather than merging"),
          PARSE_OPT_OPTARG, parse_opt_rebase },
        OPT_PASSTHRU('n', NULL, &opt_diffstat, NULL,
@@ -144,6 +151,9 @@ static struct option pull_options[] = {
        OPT_PASSTHRU(0, "log", &opt_log, N_("n"),
                N_("add (at most <n>) entries from shortlog to merge commit message"),
                PARSE_OPT_OPTARG),
+       OPT_PASSTHRU(0, "signoff", &opt_signoff, NULL,
+               N_("add Signed-off-by:"),
+               PARSE_OPT_OPTARG),
        OPT_PASSTHRU(0, "squash", &opt_squash, NULL,
                N_("create a single commit instead of doing a merge"),
                PARSE_OPT_NOARG),
@@ -189,7 +199,7 @@ static struct option pull_options[] = {
        OPT_PASSTHRU(0, "upload-pack", &opt_upload_pack, N_("path"),
                N_("path to upload pack on remote end"),
                0),
-       OPT__FORCE(&opt_force, N_("force overwrite of local branch")),
+       OPT__FORCE(&opt_force, N_("force overwrite of local branch"), 0),
        OPT_PASSTHRU('t', "tags", &opt_tags, NULL,
                N_("fetch all tags and associated objects"),
                PARSE_OPT_NOARG),
@@ -347,7 +357,7 @@ static int git_pull_config(const char *var, const char *value, void *cb)
  */
 static void get_merge_heads(struct oid_array *merge_heads)
 {
-       const char *filename = git_path_fetch_head();
+       const char *filename = git_path_fetch_head(the_repository);
        FILE *fp;
        struct strbuf sb = STRBUF_INIT;
        struct object_id oid;
@@ -535,7 +545,7 @@ static int run_fetch(const char *repo, const char **refspecs)
                argv_array_push(&args, repo);
                argv_array_pushv(&args, refspecs);
        } else if (*refspecs)
-               die("BUG: refspecs without repo?");
+               BUG("refspecs without repo?");
        ret = run_command_v_opt(args.argv, RUN_GIT_CMD);
        argv_array_clear(&args);
        return ret;
@@ -547,16 +557,29 @@ static int run_fetch(const char *repo, const char **refspecs)
 static int pull_into_void(const struct object_id *merge_head,
                const struct object_id *curr_head)
 {
+       if (opt_verify_signatures) {
+               struct commit *commit;
+
+               commit = lookup_commit(the_repository, merge_head);
+               if (!commit)
+                       die(_("unable to access commit %s"),
+                           oid_to_hex(merge_head));
+
+               verify_merge_signature(commit, opt_verbosity);
+       }
+
        /*
         * Two-way merge: we treat the index as based on an empty tree,
         * and try to fast-forward to HEAD. This ensures we will not lose
         * index/worktree changes that the user already made on the unborn
         * branch.
         */
-       if (checkout_fast_forward(&empty_tree_oid, merge_head, 0))
+       if (checkout_fast_forward(the_repository,
+                                 the_hash_algo->empty_tree,
+                                 merge_head, 0))
                return 1;
 
-       if (update_ref("initial pull", "HEAD", merge_head->hash, curr_head->hash, 0, UPDATE_REFS_DIE_ON_ERR))
+       if (update_ref("initial pull", "HEAD", merge_head, curr_head, 0, UPDATE_REFS_DIE_ON_ERR))
                return 1;
 
        return 0;
@@ -570,6 +593,7 @@ static int rebase_submodules(void)
        cp.no_stdin = 1;
        argv_array_pushl(&cp.args, "submodule", "update",
                                   "--recursive", "--rebase", NULL);
+       argv_push_verbosity(&cp.args);
 
        return run_command(&cp);
 }
@@ -582,6 +606,7 @@ static int update_submodules(void)
        cp.no_stdin = 1;
        argv_array_pushl(&cp.args, "submodule", "update",
                                   "--recursive", "--checkout", NULL);
+       argv_push_verbosity(&cp.args);
 
        return run_command(&cp);
 }
@@ -606,6 +631,8 @@ static int run_merge(void)
                argv_array_push(&args, opt_diffstat);
        if (opt_log)
                argv_array_push(&args, opt_log);
+       if (opt_signoff)
+               argv_array_push(&args, opt_signoff);
        if (opt_squash)
                argv_array_push(&args, opt_squash);
        if (opt_commit)
@@ -660,19 +687,19 @@ static const char *get_upstream_branch(const char *remote)
 }
 
 /**
- * Derives the remote tracking branch from the remote and refspec.
+ * Derives the remote-tracking branch from the remote and refspec.
  *
  * FIXME: The current implementation assumes the default mapping of
  * refs/heads/<branch_name> to refs/remotes/<remote_name>/<branch_name>.
  */
 static const char *get_tracking_branch(const char *remote, const char *refspec)
 {
-       struct refspec *spec;
+       struct refspec_item spec;
        const char *spec_src;
        const char *merge_branch;
 
-       spec = parse_fetch_refspec(1, &refspec);
-       spec_src = spec->src;
+       refspec_item_init_or_die(&spec, refspec, REFSPEC_FETCH);
+       spec_src = spec.src;
        if (!*spec_src || !strcmp(spec_src, "HEAD"))
                spec_src = "HEAD";
        else if (skip_prefix(spec_src, "heads/", &spec_src))
@@ -692,13 +719,13 @@ static const char *get_tracking_branch(const char *remote, const char *refspec)
        } else
                merge_branch = NULL;
 
-       free_refspec(1, spec);
+       refspec_item_clear(&spec);
        return merge_branch;
 }
 
 /**
  * Given the repo and refspecs, sets fork_point to the point at which the
- * current branch forked from its remote tracking branch. Returns 0 on success,
+ * current branch forked from its remote-tracking branch. Returns 0 on success,
  * -1 on failure.
  */
 static int get_rebase_fork_point(struct object_id *fork_point, const char *repo,
@@ -752,10 +779,13 @@ static int get_octopus_merge_base(struct object_id *merge_base,
 {
        struct commit_list *revs = NULL, *result;
 
-       commit_list_insert(lookup_commit_reference(curr_head), &revs);
-       commit_list_insert(lookup_commit_reference(merge_head), &revs);
+       commit_list_insert(lookup_commit_reference(the_repository, curr_head),
+                          &revs);
+       commit_list_insert(lookup_commit_reference(the_repository, merge_head),
+                          &revs);
        if (!is_null_oid(fork_point))
-               commit_list_insert(lookup_commit_reference(fork_point), &revs);
+               commit_list_insert(lookup_commit_reference(the_repository, fork_point),
+                                  &revs);
 
        result = get_octopus_merge_bases(revs);
        free_commit_list(revs);
@@ -783,7 +813,7 @@ static int run_rebase(const struct object_id *curr_head,
        struct argv_array args = ARGV_ARRAY_INIT;
 
        if (!get_octopus_merge_base(&oct_merge_base, curr_head, merge_head, fork_point))
-               if (!is_null_oid(fork_point) && !oidcmp(&oct_merge_base, fork_point))
+               if (!is_null_oid(fork_point) && oideq(&oct_merge_base, fork_point))
                        fork_point = NULL;
 
        argv_array_push(&args, "rebase");
@@ -792,7 +822,9 @@ static int run_rebase(const struct object_id *curr_head,
        argv_push_verbosity(&args);
 
        /* Options passed to git-rebase */
-       if (opt_rebase == REBASE_PRESERVE)
+       if (opt_rebase == REBASE_MERGES)
+               argv_array_push(&args, "--rebase-merges");
+       else if (opt_rebase == REBASE_PRESERVE)
                argv_array_push(&args, "--preserve-merges");
        else if (opt_rebase == REBASE_INTERACTIVE)
                argv_array_push(&args, "--interactive");
@@ -849,7 +881,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
        if (read_cache_unmerged())
                die_resolve_conflict("pull");
 
-       if (file_exists(git_path_merge_head()))
+       if (file_exists(git_path_merge_head(the_repository)))
                die_conclude_merge();
 
        if (get_oid("HEAD", &orig_head))
@@ -884,7 +916,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
                oidclr(&curr_head);
 
        if (!is_null_oid(&orig_head) && !is_null_oid(&curr_head) &&
-                       oidcmp(&orig_head, &curr_head)) {
+                       !oideq(&orig_head, &curr_head)) {
                /*
                 * The fetch involved updating the current branch.
                 *
@@ -897,7 +929,8 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
                        "fast-forwarding your working tree from\n"
                        "commit %s."), oid_to_hex(&orig_head));
 
-               if (checkout_fast_forward(&orig_head, &curr_head, 0))
+               if (checkout_fast_forward(the_repository, &orig_head,
+                                         &curr_head, 0))
                        die(_("Cannot fast-forward your working tree.\n"
                                "After making sure that you saved anything precious from\n"
                                "$ git diff %s\n"
@@ -923,15 +956,17 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
                int ret = 0;
                if ((recurse_submodules == RECURSE_SUBMODULES_ON ||
                     recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) &&
-                   submodule_touches_in_range(&rebase_fork_point, &curr_head))
+                   submodule_touches_in_range(the_repository, &rebase_fork_point, &curr_head))
                        die(_("cannot rebase with locally recorded submodule modifications"));
                if (!autostash) {
                        struct commit_list *list = NULL;
                        struct commit *merge_head, *head;
 
-                       head = lookup_commit_reference(&orig_head);
+                       head = lookup_commit_reference(the_repository,
+                                                      &orig_head);
                        commit_list_insert(head, &list);
-                       merge_head = lookup_commit_reference(&merge_heads.oid[0]);
+                       merge_head = lookup_commit_reference(the_repository,
+                                                            &merge_heads.oid[0]);
                        if (is_descendant_of(merge_head, list)) {
                                /* we can fast-forward this without invoking rebase */
                                opt_ff = "--ff-only";