reset/checkout/read-tree: unify config callback for submodule recursion

The callback function is essentially duplicated 3 times. Remove all
of them and offer a new callback function, that lives in submodule.c

By putting the callback function there, we no longer need the function
'set_config_update_recurse_submodules', nor duplicate the global variable
in each builtin as well as submodule.c

In the three builtins we have different 2 ways how to load the .gitmodules
and config file, which are slightly different. git-checkout has to load
the submodule config all the time due to 23b4c7bcc5 (checkout: Use
submodule.*.ignore settings from .git/config and .gitmodules, 2010-08-28)

git-reset and git-read-tree do not respect these diff settings, so loading
the submodule configuration is optional. Also put that into submodule.c
for code deduplication.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/checkout.c b/builtin/checkout.c
index da5c9dc..56ea723 100644 (file)
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -21,31 +21,12 @@
 #include "submodule-config.h"
 #include "submodule.h"
 
-static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
-
 static const char * const checkout_usage[] = {
        N_("git checkout [<options>] <branch>"),
        N_("git checkout [<options>] [<branch>] -- <file>..."),
        NULL,
 };
 
-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;
-}
-
 struct checkout_opts {
        int patch_mode;
        int quiet;
@@ -1184,7 +1165,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
                         N_("do not check if another worktree is holding the given ref")),
                { OPTION_CALLBACK, 0, "recurse-submodules", NULL,
                            "checkout", "control recursive updating of submodules",
-                           PARSE_OPT_OPTARG, option_parse_recurse_submodules },
+                           PARSE_OPT_OPTARG, option_parse_recurse_submodules_worktree_updater },
                OPT_BOOL(0, "progress", &opts.show_progress, N_("force progress reporting")),
                OPT_END(),
        };
@@ -1215,12 +1196,6 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
                git_xmerge_config("merge.conflictstyle", conflict_style, NULL);
        }
 
-       if (recurse_submodules != RECURSE_SUBMODULES_OFF) {
-               git_config(submodule_config, NULL);
-               if (recurse_submodules != RECURSE_SUBMODULES_DEFAULT)
-                       set_config_update_recurse_submodules(recurse_submodules);
-       }
-
        if ((!!opts.new_branch + !!opts.new_branch_force + !!opts.new_orphan_branch) > 1)
                die(_("-b, -B and --orphan are mutually exclusive"));
 

diff --git a/builtin/read-tree.c b/builtin/read-tree.c
index 2a1b8a5..8a889ef 100644 (file)
--- a/builtin/read-tree.c
+++ b/builtin/read-tree.c
@@ -21,7 +21,6 @@
 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)
 {
@@ -99,23 +98,6 @@ static int debug_merge(const struct cache_entry * const *stages,
        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)
@@ -159,7 +141,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
                         N_("debug unpack-trees")),
                { OPTION_CALLBACK, 0, "recurse-submodules", NULL,
                            "checkout", "control recursive updating of submodules",
-                           PARSE_OPT_OPTARG, option_parse_recurse_submodules },
+                           PARSE_OPT_OPTARG, option_parse_recurse_submodules_worktree_updater },
                OPT_END()
        };
 
@@ -173,13 +155,9 @@ 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);
 
-       hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
+       load_submodule_cache();
 
-       if (recurse_submodules != RECURSE_SUBMODULES_DEFAULT) {
-               gitmodules_config();
-               git_config(submodule_config, NULL);
-               set_config_update_recurse_submodules(RECURSE_SUBMODULES_ON);
-       }
+       hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
 
        prefix_set = opts.prefix ? 1 : 0;
        if (1 < opts.merge + opts.reset + prefix_set)

diff --git a/builtin/reset.c b/builtin/reset.c
index 1e5f85b..6f89dc5 100644 (file)
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -24,25 +24,6 @@
 #include "submodule.h"
 #include "submodule-config.h"
 
-static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
-
-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 const char * const git_reset_usage[] = {
        N_("git reset [--mixed | --soft | --hard | --merge | --keep] [-q] [<commit>]"),
        N_("git reset [-q] [<tree-ish>] [--] <paths>..."),
@@ -306,7 +287,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
                                N_("reset HEAD but keep local changes"), KEEP),
                { OPTION_CALLBACK, 0, "recurse-submodules", NULL,
                            "reset", "control recursive updating of submodules",
-                           PARSE_OPT_OPTARG, option_parse_recurse_submodules },
+                           PARSE_OPT_OPTARG, option_parse_recurse_submodules_worktree_updater },
                OPT_BOOL('p', "patch", &patch_mode, N_("select hunks interactively")),
                OPT_BOOL('N', "intent-to-add", &intent_to_add,
                                N_("record only the fact that removed paths will be added later")),
@@ -319,11 +300,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
                                                PARSE_OPT_KEEP_DASHDASH);
        parse_args(&pathspec, argv, prefix, patch_mode, &rev);
 
-       if (recurse_submodules != RECURSE_SUBMODULES_DEFAULT) {
-               gitmodules_config();
-               git_config(submodule_config, NULL);
-               set_config_update_recurse_submodules(RECURSE_SUBMODULES_ON);
-       }
+       load_submodule_cache();
 
        unborn = !strcmp(rev, "HEAD") && get_sha1("HEAD", oid.hash);
        if (unborn) {

diff --git a/submodule.c b/submodule.c
index 5482510..c9e764b 100644 (file)
--- a/submodule.c
+++ b/submodule.c
@@ -18,7 +18,7 @@
 #include "worktree.h"
 
 static int config_fetch_recurse_submodules = RECURSE_SUBMODULES_ON_DEMAND;
-static int config_update_recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
+static int config_update_recurse_submodules = RECURSE_SUBMODULES_OFF;
 static int parallel_jobs = 1;
 static struct string_list changed_submodule_paths = STRING_LIST_INIT_DUP;
 static int initialized_fetch_ref_tips;
@@ -169,6 +169,32 @@ int submodule_config(const char *var, const char *value, void *cb)
        return 0;
 }
 
+int option_parse_recurse_submodules_worktree_updater(const struct option *opt,
+                                                    const char *arg, int unset)
+{
+       if (unset) {
+               config_update_recurse_submodules = RECURSE_SUBMODULES_OFF;
+               return 0;
+       }
+       if (arg)
+               config_update_recurse_submodules =
+                       parse_update_recurse_submodules_arg(opt->long_name,
+                                                           arg);
+       else
+               config_update_recurse_submodules = RECURSE_SUBMODULES_ON;
+
+       return 0;
+}
+
+void load_submodule_cache(void)
+{
+       if (config_update_recurse_submodules == RECURSE_SUBMODULES_OFF)
+               return;
+
+       gitmodules_config();
+       git_config(submodule_config, NULL);
+}
+
 void gitmodules_config(void)
 {
        const char *work_tree = get_git_work_tree();
@@ -596,11 +622,6 @@ void set_config_fetch_recurse_submodules(int value)
        config_fetch_recurse_submodules = value;
 }
 
-void set_config_update_recurse_submodules(int value)
-{
-       config_update_recurse_submodules = value;
-}
-
 int should_update_submodules(void)
 {
        return config_update_recurse_submodules == RECURSE_SUBMODULES_ON;

diff --git a/submodule.h b/submodule.h
index 1277480..b13f120 100644 (file)
--- a/submodule.h
+++ b/submodule.h
@@ -39,6 +39,11 @@ extern void stage_updated_gitmodules(void);
 extern void set_diffopt_flags_from_submodule_config(struct diff_options *,
                const char *path);
 extern int submodule_config(const char *var, const char *value, void *cb);
+
+struct option;
+int option_parse_recurse_submodules_worktree_updater(const struct option *opt,
+                                                    const char *arg, int unset);
+void load_submodule_cache(void);
 extern void gitmodules_config(void);
 extern void gitmodules_config_sha1(const unsigned char *commit_sha1);
 extern int is_submodule_initialized(const char *path);
@@ -65,7 +70,6 @@ extern void show_submodule_inline_diff(FILE *f, const char *path,
                const char *del, const char *add, const char *reset,
                const struct diff_options *opt);
 extern void set_config_fetch_recurse_submodules(int value);
-extern void set_config_update_recurse_submodules(int value);
 /* Check if we want to update any submodule.*/
 extern int should_update_submodules(void);
 /*