Imported Upstream version 2.21.0
[platform/upstream/git.git] / builtin / mv.c
index 034fec9..be15ba7 100644 (file)
@@ -3,47 +3,68 @@
  *
  * Copyright (C) 2006 Johannes Schindelin
  */
-#include "cache.h"
+#define USE_THE_INDEX_COMPATIBILITY_MACROS
 #include "builtin.h"
+#include "config.h"
+#include "pathspec.h"
+#include "lockfile.h"
 #include "dir.h"
 #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>"),
+       N_("git mv [<options>] <source>... <destination>"),
        NULL
 };
 
-static const char **copy_pathspec(const char *prefix, const char **pathspec,
-                                 int count, int base_name)
+#define DUP_BASENAME 1
+#define KEEP_TRAILING_SLASH 2
+
+static const char **internal_prefix_pathspec(const char *prefix,
+                                            const char **pathspec,
+                                            int count, unsigned flags)
 {
        int i;
-       const char **result = xmalloc((count + 1) * sizeof(const char *));
-       memcpy(result, pathspec, count * sizeof(const char *));
-       result[count] = NULL;
+       const char **result;
+       int prefixlen = prefix ? strlen(prefix) : 0;
+       ALLOC_ARRAY(result, count + 1);
+
+       /* Create an intermediate copy of the pathspec based on the flags */
        for (i = 0; i < count; i++) {
-               int length = strlen(result[i]);
+               int length = strlen(pathspec[i]);
                int to_copy = length;
-               while (to_copy > 0 && is_dir_sep(result[i][to_copy - 1]))
+               char *it;
+               while (!(flags & KEEP_TRAILING_SLASH) &&
+                      to_copy > 0 && is_dir_sep(pathspec[i][to_copy - 1]))
                        to_copy--;
-               if (to_copy != length || base_name) {
-                       char *it = xmemdupz(result[i], to_copy);
-                       if (base_name) {
-                               result[i] = xstrdup(basename(it));
-                               free(it);
-                       } else
-                               result[i] = it;
+
+               it = xmemdupz(pathspec[i], to_copy);
+               if (flags & DUP_BASENAME) {
+                       result[i] = xstrdup(basename(it));
+                       free(it);
+               } else {
+                       result[i] = it;
                }
        }
-       return get_pathspec(prefix, result);
+       result[count] = NULL;
+
+       /* Prefix the pathspec and free the old intermediate strings */
+       for (i = 0; i < count; i++) {
+               const char *match = prefix_path(prefix, prefixlen, result[i]);
+               free((char *) result[i]);
+               result[i] = match;
+       }
+
+       return result;
 }
 
 static const char *add_slash(const char *path)
 {
-       int len = strlen(path);
+       size_t len = strlen(path);
        if (path[len - 1] != '/') {
-               char *with_slash = xmalloc(len + 2);
+               char *with_slash = xmalloc(st_add(len, 2));
                memcpy(with_slash, path, len);
                with_slash[len++] = '/';
                with_slash[len] = 0;
@@ -52,23 +73,65 @@ static const char *add_slash(const char *path)
        return path;
 }
 
-static struct lock_file lock_file;
+#define SUBMODULE_WITH_GITDIR ((const char *)1)
+
+static void prepare_move_submodule(const char *src, int first,
+                                  const char **submodule_gitfile)
+{
+       struct strbuf submodule_dotgit = STRBUF_INIT;
+       if (!S_ISGITLINK(active_cache[first]->ce_mode))
+               die(_("Directory %s is in index and no submodule?"), src);
+       if (!is_staging_gitmodules_ok(&the_index))
+               die(_("Please stage your changes to .gitmodules or stash them to proceed"));
+       strbuf_addf(&submodule_dotgit, "%s/.git", src);
+       *submodule_gitfile = read_gitfile(submodule_dotgit.buf);
+       if (*submodule_gitfile)
+               *submodule_gitfile = xstrdup(*submodule_gitfile);
+       else
+               *submodule_gitfile = SUBMODULE_WITH_GITDIR;
+       strbuf_release(&submodule_dotgit);
+}
+
+static int index_range_of_same_dir(const char *src, int length,
+                                  int *first_p, int *last_p)
+{
+       const char *src_w_slash = add_slash(src);
+       int first, last, len_w_slash = length + 1;
+
+       first = cache_name_pos(src_w_slash, len_w_slash);
+       if (first >= 0)
+               die(_("%.*s is in index"), len_w_slash, src_w_slash);
+
+       first = -1 - first;
+       for (last = first; last < active_nr; last++) {
+               const char *path = active_cache[last]->name;
+               if (strncmp(path, src_w_slash, len_w_slash))
+                       break;
+       }
+       if (src_w_slash != src)
+               free((char *)src_w_slash);
+       *first_p = first;
+       *last_p = last;
+       return last - first;
+}
 
 int cmd_mv(int argc, const char **argv, const char *prefix)
 {
-       int i, newfd;
+       int i, flags, gitmodules_modified = 0;
        int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
        struct option builtin_mv_options[] = {
                OPT__VERBOSE(&verbose, N_("be verbose")),
                OPT__DRY_RUN(&show_only, N_("dry run")),
-               OPT__FORCE(&force, N_("force move/rename even if target exists")),
-               OPT_BOOLEAN('k', NULL, &ignore_errors, N_("skip move/rename errors")),
+               OPT__FORCE(&force, N_("force move/rename even if target exists"),
+                          PARSE_OPT_NOCOMPLETE),
+               OPT_BOOL('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;
+       struct lock_file lock_file = LOCK_INIT;
 
        git_config(git_default_config, NULL);
 
@@ -77,24 +140,33 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
        if (--argc < 1)
                usage_with_options(builtin_mv_usage, builtin_mv_options);
 
-       newfd = hold_locked_index(&lock_file, 1);
+       hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
        if (read_cache() < 0)
                die(_("index file corrupt"));
 
-       source = copy_pathspec(prefix, argv, argc, 0);
+       source = internal_prefix_pathspec(prefix, argv, argc, 0);
        modes = xcalloc(argc, sizeof(enum update_mode));
-       dest_path = copy_pathspec(prefix, argv + argc, 1, 0);
+       /*
+        * Keep trailing slash, needed to let
+        * "git mv file no-such-dir/" error out, except in the case
+        * "git mv directory no-such-dir/".
+        */
+       flags = KEEP_TRAILING_SLASH;
+       if (argc == 1 && is_directory(argv[0]) && !is_directory(argv[1]))
+               flags = 0;
+       dest_path = internal_prefix_pathspec(prefix, argv + argc, 1, flags);
+       submodule_gitfile = xcalloc(argc, sizeof(char *));
 
        if (dest_path[0][0] == '\0')
                /* special case: "." was normalized to "" */
-               destination = copy_pathspec(dest_path[0], argv, argc, 1);
+               destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
        else if (!lstat(dest_path[0], &st) &&
                        S_ISDIR(st.st_mode)) {
                dest_path[0] = add_slash(dest_path[0]);
-               destination = copy_pathspec(dest_path[0], argv, argc, 1);
+               destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
        } else {
                if (argc != 1)
-                       die("destination '%s' is not a directory", dest_path[0]);
+                       die(_("destination '%s' is not a directory"), dest_path[0]);
                destination = dest_path;
        }
 
@@ -117,59 +189,41 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
                                && lstat(dst, &st) == 0)
                        bad = _("cannot move directory over file");
                else if (src_is_dir) {
-                       const char *src_w_slash = add_slash(src);
-                       int len_w_slash = length + 1;
-                       int first, last;
+                       int first = cache_name_pos(src, length), last;
 
-                       modes[i] = WORKING_DIRECTORY;
-
-                       first = cache_name_pos(src_w_slash, len_w_slash);
                        if (first >= 0)
-                               die (_("Huh? %.*s is in index?"),
-                                               len_w_slash, src_w_slash);
-
-                       first = -1 - first;
-                       for (last = first; last < active_nr; last++) {
-                               const char *path = active_cache[last]->name;
-                               if (strncmp(path, src_w_slash, len_w_slash))
-                                       break;
-                       }
-                       free((char *)src_w_slash);
-
-                       if (last - first < 1)
+                               prepare_move_submodule(src, first,
+                                                      submodule_gitfile + i);
+                       else if (index_range_of_same_dir(src, length,
+                                                        &first, &last) < 1)
                                bad = _("source directory is empty");
-                       else {
-                               int j, dst_len;
-
-                               if (last - first > 0) {
-                                       source = xrealloc(source,
-                                                       (argc + last - first)
-                                                       * sizeof(char *));
-                                       destination = xrealloc(destination,
-                                                       (argc + last - first)
-                                                       * sizeof(char *));
-                                       modes = xrealloc(modes,
-                                                       (argc + last - first)
-                                                       * sizeof(enum update_mode));
-                               }
+                       else { /* last - first >= 1 */
+                               int j, dst_len, n;
+
+                               modes[i] = WORKING_DIRECTORY;
+                               n = argc + last - first;
+                               REALLOC_ARRAY(source, n);
+                               REALLOC_ARRAY(destination, n);
+                               REALLOC_ARRAY(modes, n);
+                               REALLOC_ARRAY(submodule_gitfile, n);
 
                                dst = add_slash(dst);
                                dst_len = strlen(dst);
 
                                for (j = 0; j < last - first; j++) {
-                                       const char *path =
-                                               active_cache[first + j]->name;
+                                       const char *path = active_cache[first + j]->name;
                                        source[argc + j] = path;
                                        destination[argc + j] =
-                                               prefix_path(dst, dst_len,
-                                                       path + length + 1);
+                                               prefix_path(dst, dst_len, path + length + 1);
                                        modes[argc + j] = INDEX;
+                                       submodule_gitfile[argc + j] = NULL;
                                }
                                argc += last - first;
                        }
                } else if (cache_name_pos(src, length) < 0)
                        bad = _("not under version control");
-               else if (lstat(dst, &st) == 0) {
+               else if (lstat(dst, &st) == 0 &&
+                        (!ignore_case || strcasecmp(src, dst))) {
                        bad = _("destination exists");
                        if (force) {
                                /*
@@ -185,22 +239,27 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
                        }
                } else if (string_list_has_string(&src_for_dst, dst))
                        bad = _("multiple sources for the same target");
+               else if (is_dir_sep(dst[strlen(dst) - 1]))
+                       bad = _("destination directory does not exist");
                else
                        string_list_insert(&src_for_dst, dst);
 
-               if (bad) {
-                       if (ignore_errors) {
-                               if (--argc > 0) {
-                                       memmove(source + i, source + i + 1,
-                                               (argc - i) * sizeof(char *));
-                                       memmove(destination + i,
-                                               destination + i + 1,
-                                               (argc - i) * sizeof(char *));
-                                       i--;
-                               }
-                       } else
-                               die (_("%s, source=%s, destination=%s"),
-                                    bad, src, dst);
+               if (!bad)
+                       continue;
+               if (!ignore_errors)
+                       die(_("%s, source=%s, destination=%s"),
+                            bad, src, dst);
+               if (--argc > 0) {
+                       int n = argc - i;
+                       memmove(source + i, source + i + 1,
+                               n * sizeof(char *));
+                       memmove(destination + i, destination + i + 1,
+                               n * sizeof(char *));
+                       memmove(modes + i, modes + i + 1,
+                               n * sizeof(enum update_mode));
+                       memmove(submodule_gitfile + i, submodule_gitfile + i + 1,
+                               n * sizeof(char *));
+                       i--;
                }
        }
 
@@ -210,24 +269,36 @@ 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)
+                       continue;
+               if (mode != INDEX && rename(src, dst) < 0) {
+                       if (ignore_errors)
+                               continue;
+                       die_errno(_("renaming '%s' failed"), src);
+               }
+               if (submodule_gitfile[i]) {
+                       if (!update_path_in_gitmodules(src, dst))
+                               gitmodules_modified = 1;
+                       if (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR)
+                               connect_work_tree_and_git_dir(dst,
+                                                             submodule_gitfile[i],
+                                                             1);
+               }
 
                if (mode == WORKING_DIRECTORY)
                        continue;
 
                pos = cache_name_pos(src, strlen(src));
                assert(pos >= 0);
-               if (!show_only)
-                       rename_cache_entry_at(pos, dst);
+               rename_cache_entry_at(pos, dst);
        }
 
-       if (active_cache_changed) {
-               if (write_cache(newfd, active_cache, active_nr) ||
-                   commit_locked_index(&lock_file))
-                       die(_("Unable to write new index file"));
-       }
+       if (gitmodules_modified)
+               stage_updated_gitmodules(&the_index);
+
+       if (write_locked_index(&the_index, &lock_file,
+                              COMMIT_LOCK | SKIP_IF_UNCHANGED))
+               die(_("Unable to write new index file"));
 
        return 0;
 }