/* * "git mv" builtin command * * Copyright (C) 2006 Johannes Schindelin */ #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>"), NULL }; #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; 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(pathspec[i]); int to_copy = length; char *it; while (!(flags & KEEP_TRAILING_SLASH) && to_copy > 0 && is_dir_sep(pathspec[i][to_copy - 1])) to_copy--; it = xmemdupz(pathspec[i], to_copy); if (flags & DUP_BASENAME) { result[i] = xstrdup(basename(it)); free(it); } else { result[i] = it; } } 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) { size_t len = strlen(path); if (path[len - 1] != '/') { char *with_slash = xmalloc(st_add(len, 2)); memcpy(with_slash, path, len); with_slash[len++] = '/'; with_slash[len] = 0; return with_slash; } 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, 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_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")), OPT_END(), }; 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; git_config(git_default_config, NULL); argc = parse_options(argc, argv, prefix, builtin_mv_options, builtin_mv_usage, 0); if (--argc < 1) usage_with_options(builtin_mv_usage, builtin_mv_options); hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); if (read_cache() < 0) die(_("index file corrupt")); source = internal_prefix_pathspec(prefix, argv, argc, 0); modes = xcalloc(argc, sizeof(enum update_mode)); /* * 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 = 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 = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME); } else { if (argc != 1) die(_("destination '%s' is not a directory"), dest_path[0]); destination = dest_path; } /* Checking */ for (i = 0; i < argc; i++) { const char *src = source[i], *dst = destination[i]; int length, src_is_dir; const char *bad = NULL; if (show_only) printf(_("Checking rename of '%s' to '%s'\n"), src, dst); length = strlen(src); if (lstat(src, &st) < 0) bad = _("bad source"); else if (!strncmp(src, dst, length) && (dst[length] == 0 || dst[length] == '/')) { bad = _("can not move directory into itself"); } else if ((src_is_dir = S_ISDIR(st.st_mode)) && lstat(dst, &st) == 0) bad = _("cannot move directory over file"); else if (src_is_dir) { int first = cache_name_pos(src, length), last; if (first >= 0) 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 { /* 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; source[argc + j] = path; destination[argc + j] = 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 && (!ignore_case || strcasecmp(src, dst))) { bad = _("destination exists"); if (force) { /* * only files can overwrite each other: * check both source and destination */ if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) { if (verbose) warning(_("overwriting '%s'"), dst); bad = NULL; } else bad = _("Cannot overwrite"); } } 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) 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--; } } for (i = 0; i < argc; i++) { const char *src = source[i], *dst = destination[i]; enum update_mode mode = modes[i]; int pos; if (show_only || verbose) printf(_("Renaming %s to %s\n"), src, dst); 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 (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR) connect_work_tree_and_git_dir(dst, submodule_gitfile[i]); if (!update_path_in_gitmodules(src, dst)) gitmodules_modified = 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); } if (gitmodules_modified) stage_updated_gitmodules(&the_index); if (active_cache_changed && write_locked_index(&the_index, &lock_file, COMMIT_LOCK)) die(_("Unable to write new index file")); return 0; }