mv: move submodules using a gitfile

diff --git a/builtin/mv.c b/builtin/mv.c
index 1d3ef63fa32c90d338ab2b0ba1397af2c6de95a3..68b7060a47a9b5815d9ce6796336e2bc8f9a22a2 100644 (file)
--- a/builtin/mv.c
+++ b/builtin/mv.c
@@ -9,6 +9,7 @@
 #include "cache-tree.h"
 #include "string-list.h"
 #include "parse-options.h"
+#include "submodule.h"
 
 static const char * const builtin_mv_usage[] = {
        N_("git mv [options] <source>... <destination>"),
@@ -66,7 +67,7 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
                OPT_BOOLEAN('k', NULL, &ignore_errors, N_("skip move/rename errors")),
                OPT_END(),
        };
-       const char **source, **destination, **dest_path;
+       const char **source, **destination, **dest_path, **submodule_gitfile;
        enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
        struct stat st;
        struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
@@ -85,6 +86,7 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
        source = internal_copy_pathspec(prefix, argv, argc, 0);
        modes = xcalloc(argc, sizeof(enum update_mode));
        dest_path = internal_copy_pathspec(prefix, argv + argc, 1, 0);
+       submodule_gitfile = xcalloc(argc, sizeof(char *));
 
        if (dest_path[0][0] == '\0')
                /* special case: "." was normalized to "" */
@@ -120,8 +122,14 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
                else if (src_is_dir) {
                        int first = cache_name_pos(src, length);
                        if (first >= 0) {
+                               struct strbuf submodule_dotgit = STRBUF_INIT;
                                if (!S_ISGITLINK(active_cache[first]->ce_mode))
                                        die (_("Huh? Directory %s is in index and no submodule?"), src);
+                               strbuf_addf(&submodule_dotgit, "%s/.git", src);
+                               submodule_gitfile[i] = read_gitfile(submodule_dotgit.buf);
+                               if (submodule_gitfile[i])
+                                       submodule_gitfile[i] = xstrdup(submodule_gitfile[i]);
+                               strbuf_release(&submodule_dotgit);
                        } else {
                                const char *src_w_slash = add_slash(src);
                                int last, len_w_slash = length + 1;
@@ -216,9 +224,12 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
                int pos;
                if (show_only || verbose)
                        printf(_("Renaming %s to %s\n"), src, dst);
-               if (!show_only && mode != INDEX &&
-                               rename(src, dst) < 0 && !ignore_errors)
-                       die_errno (_("renaming '%s' failed"), src);
+               if (!show_only && mode != INDEX) {
+                       if (rename(src, dst) < 0 && !ignore_errors)
+                               die_errno (_("renaming '%s' failed"), src);
+                       if (submodule_gitfile[i])
+                               connect_work_tree_and_git_dir(dst, submodule_gitfile[i]);
+               }
 
                if (mode == WORKING_DIRECTORY)
                        continue;