push: propagate remote and refspec with --recurse-submodules
[gitweb.git] / builtin / read-tree.c
index 042ac1b84f22257d1a8a4d32d34124b6dc372f16..23e212ee8c5b2d26f03ac6be2b822a87ad06c233 100644 (file)
@@ -5,6 +5,7 @@
  */
 
 #include "cache.h"
+#include "lockfile.h"
 #include "object.h"
 #include "tree.h"
 #include "tree-walk.h"
 #include "builtin.h"
 #include "parse-options.h"
 #include "resolve-undo.h"
+#include "submodule.h"
+#include "submodule-config.h"
 
 static int nr_trees;
 static int read_empty;
 static struct tree *trees[MAX_UNPACK_TREES];
+static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
 
 static int list_tree(unsigned char *sha1)
 {
@@ -33,7 +37,7 @@ static int list_tree(unsigned char *sha1)
 }
 
 static const char * const read_tree_usage[] = {
-       N_("git read-tree [[-m [--trivial] [--aggressive] | --reset | --prefix=<prefix>] [-u [--exclude-per-directory=<gitignore>] | -i]] [--no-sparse-checkout] [--index-output=<file>] (--empty | <tree-ish1> [<tree-ish2> [<tree-ish3>]])"),
+       N_("git read-tree [(-m [--trivial] [--aggressive] | --reset | --prefix=<prefix>) [-u [--exclude-per-directory=<gitignore>] | -i]] [--no-sparse-checkout] [--index-output=<file>] (--empty | <tree-ish1> [<tree-ish2> [<tree-ish3>]])"),
        NULL
 };
 
@@ -66,7 +70,7 @@ static int exclude_per_directory_cb(const struct option *opt, const char *arg,
        return 0;
 }
 
-static void debug_stage(const char *label, struct cache_entry *ce,
+static void debug_stage(const char *label, const struct cache_entry *ce,
                        struct unpack_trees_options *o)
 {
        printf("%s ", label);
@@ -77,10 +81,11 @@ static void debug_stage(const char *label, struct cache_entry *ce,
        else
                printf("%06o #%d %s %.8s\n",
                       ce->ce_mode, ce_stage(ce), ce->name,
-                      sha1_to_hex(ce->sha1));
+                      oid_to_hex(&ce->oid));
 }
 
-static int debug_merge(struct cache_entry **stages, struct unpack_trees_options *o)
+static int debug_merge(const struct cache_entry * const *stages,
+                      struct unpack_trees_options *o)
 {
        int i;
 
@@ -88,17 +93,34 @@ static int debug_merge(struct cache_entry **stages, struct unpack_trees_options
        debug_stage("index", stages[0], o);
        for (i = 1; i <= o->merge_size; i++) {
                char buf[24];
-               sprintf(buf, "ent#%d", i);
+               xsnprintf(buf, sizeof(buf), "ent#%d", i);
                debug_stage(buf, stages[i], o);
        }
        return 0;
 }
 
+static int option_parse_recurse_submodules(const struct option *opt,
+                                          const char *arg, int unset)
+{
+       if (unset) {
+               recurse_submodules = RECURSE_SUBMODULES_OFF;
+               return 0;
+       }
+       if (arg)
+               recurse_submodules =
+                       parse_update_recurse_submodules_arg(opt->long_name,
+                                                           arg);
+       else
+               recurse_submodules = RECURSE_SUBMODULES_ON;
+
+       return 0;
+}
+
 static struct lock_file lock_file;
 
 int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
 {
-       int i, newfd, stage = 0;
+       int i, stage = 0;
        unsigned char sha1[20];
        struct tree_desc t[MAX_UNPACK_TREES];
        struct unpack_trees_options opts;
@@ -107,34 +129,37 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
                { OPTION_CALLBACK, 0, "index-output", NULL, N_("file"),
                  N_("write resulting index to <file>"),
                  PARSE_OPT_NONEG, index_output_cb },
-               OPT_SET_INT(0, "empty", &read_empty,
-                           N_("only empty the index"), 1),
+               OPT_BOOL(0, "empty", &read_empty,
+                           N_("only empty the index")),
                OPT__VERBOSE(&opts.verbose_update, N_("be verbose")),
                OPT_GROUP(N_("Merging")),
-               OPT_SET_INT('m', NULL, &opts.merge,
-                           N_("perform a merge in addition to a read"), 1),
-               OPT_SET_INT(0, "trivial", &opts.trivial_merges_only,
-                           N_("3-way merge if no file level merging required"), 1),
-               OPT_SET_INT(0, "aggressive", &opts.aggressive,
-                           N_("3-way merge in presence of adds and removes"), 1),
-               OPT_SET_INT(0, "reset", &opts.reset,
-                           N_("same as -m, but discard unmerged entries"), 1),
+               OPT_BOOL('m', NULL, &opts.merge,
+                        N_("perform a merge in addition to a read")),
+               OPT_BOOL(0, "trivial", &opts.trivial_merges_only,
+                        N_("3-way merge if no file level merging required")),
+               OPT_BOOL(0, "aggressive", &opts.aggressive,
+                        N_("3-way merge in presence of adds and removes")),
+               OPT_BOOL(0, "reset", &opts.reset,
+                        N_("same as -m, but discard unmerged entries")),
                { OPTION_STRING, 0, "prefix", &opts.prefix, N_("<subdirectory>/"),
                  N_("read the tree into the index under <subdirectory>/"),
                  PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP },
-               OPT_SET_INT('u', NULL, &opts.update,
-                           N_("update working tree with merge result"), 1),
+               OPT_BOOL('u', NULL, &opts.update,
+                        N_("update working tree with merge result")),
                { OPTION_CALLBACK, 0, "exclude-per-directory", &opts,
                  N_("gitignore"),
                  N_("allow explicitly ignored files to be overwritten"),
                  PARSE_OPT_NONEG, exclude_per_directory_cb },
-               OPT_SET_INT('i', NULL, &opts.index_only,
-                           N_("don't check the working tree after merging"), 1),
+               OPT_BOOL('i', NULL, &opts.index_only,
+                        N_("don't check the working tree after merging")),
                OPT__DRY_RUN(&opts.dry_run, N_("don't update the index or the work tree")),
-               OPT_SET_INT(0, "no-sparse-checkout", &opts.skip_sparse_checkout,
-                           N_("skip applying sparse checkout filter"), 1),
-               OPT_SET_INT(0, "debug-unpack", &opts.debug_unpack,
-                           N_("debug unpack-trees"), 1),
+               OPT_BOOL(0, "no-sparse-checkout", &opts.skip_sparse_checkout,
+                        N_("skip applying sparse checkout filter")),
+               OPT_BOOL(0, "debug-unpack", &opts.debug_unpack,
+                        N_("debug unpack-trees")),
+               { OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules,
+                           "checkout", "control recursive updating of submodules",
+                           PARSE_OPT_OPTARG, option_parse_recurse_submodules },
                OPT_END()
        };
 
@@ -148,12 +173,27 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
        argc = parse_options(argc, argv, unused_prefix, read_tree_options,
                             read_tree_usage, 0);
 
-       newfd = hold_locked_index(&lock_file, 1);
+       hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
+
+       if (recurse_submodules != RECURSE_SUBMODULES_DEFAULT) {
+               gitmodules_config();
+               git_config(submodule_config, NULL);
+               set_config_update_recurse_submodules(RECURSE_SUBMODULES_ON);
+       }
 
        prefix_set = opts.prefix ? 1 : 0;
        if (1 < opts.merge + opts.reset + prefix_set)
                die("Which one? -m, --reset, or --prefix?");
 
+       /*
+        * NEEDSWORK
+        *
+        * The old index should be read anyway even if we're going to
+        * destroy all index entries because we still need to preserve
+        * certain information such as index version or split-index
+        * mode.
+        */
+
        if (opts.reset || opts.merge || opts.prefix) {
                if (read_cache_unmerged() && (opts.prefix || opts.merge))
                        die("You need to resolve your current index first");
@@ -177,7 +217,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
 
        if (1 < opts.index_only + opts.update)
                die("-u and -i at the same time makes no sense");
-       if ((opts.update||opts.index_only) && !opts.merge)
+       if ((opts.update || opts.index_only) && !opts.merge)
                die("%s is meaningless without -m, --reset, or --prefix",
                    opts.update ? "-u" : "-i");
        if ((opts.dir && !opts.update))
@@ -230,10 +270,9 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
         * what came from the tree.
         */
        if (nr_trees == 1 && !opts.prefix)
-               prime_cache_tree(&active_cache_tree, trees[0]);
+               prime_cache_tree(&the_index, trees[0]);
 
-       if (write_cache(newfd, active_cache, active_nr) ||
-           commit_locked_index(&lock_file))
+       if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
                die("unable to write new index file");
        return 0;
 }