/* * "git mv" builtin command * * Copyright (C) 2006 Johannes Schindelin */ #include "cache.h" #include "builtin.h" #include "dir.h" #include "cache-tree.h" #include "path-list.h" static const char builtin_mv_usage[] = "git-mv [-n] [-f] (<source> <destination> | [-k] <source>... <destination>)"; static const char **copy_pathspec(const char *prefix, const char **pathspec, int count, int base_name) { int i; const char **result = xmalloc((count + 1) * sizeof(const char *)); memcpy(result, pathspec, count * sizeof(const char *)); result[count] = NULL; for (i = 0; i < count; i++) { int length = strlen(result[i]); if (length > 0 && result[i][length - 1] == '/') { char *without_slash = xmalloc(length); memcpy(without_slash, result[i], length - 1); without_slash[length - 1] = '\0'; result[i] = without_slash; } if (base_name) { const char *last_slash = strrchr(result[i], '/'); if (last_slash) result[i] = last_slash + 1; } } return get_pathspec(prefix, result); } static void show_list(const char *label, struct path_list *list) { if (list->nr > 0) { int i; printf("%s", label); for (i = 0; i < list->nr; i++) printf("%s%s", i > 0 ? ", " : "", list->items[i].path); putchar('\n'); } } static const char *add_slash(const char *path) { int len = strlen(path); if (path[len - 1] != '/') { char *with_slash = xmalloc(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; int cmd_mv(int argc, const char **argv, const char *prefix) { int i, newfd, count; int verbose = 0, show_only = 0, force = 0, ignore_errors = 0; const char **source, **destination, **dest_path; enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes; struct stat st; struct path_list overwritten = {NULL, 0, 0, 0}; struct path_list src_for_dst = {NULL, 0, 0, 0}; struct path_list added = {NULL, 0, 0, 0}; struct path_list deleted = {NULL, 0, 0, 0}; struct path_list changed = {NULL, 0, 0, 0}; git_config(git_default_config); newfd = hold_locked_index(&lock_file, 1); if (read_cache() < 0) die("index file corrupt"); for (i = 1; i < argc; i++) { const char *arg = argv[i]; if (arg[0] != '-') break; if (!strcmp(arg, "--")) { i++; break; } if (!strcmp(arg, "-n")) { show_only = 1; continue; } if (!strcmp(arg, "-f")) { force = 1; continue; } if (!strcmp(arg, "-k")) { ignore_errors = 1; continue; } usage(builtin_mv_usage); } count = argc - i - 1; if (count < 1) usage(builtin_mv_usage); source = copy_pathspec(prefix, argv + i, count, 0); modes = xcalloc(count, sizeof(enum update_mode)); dest_path = copy_pathspec(prefix, argv + argc - 1, 1, 0); if (dest_path[0][0] == '\0') /* special case: "." was normalized to "" */ destination = copy_pathspec(dest_path[0], argv + i, count, 1); 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 + i, count, 1); } else { if (count != 1) usage(builtin_mv_usage); destination = dest_path; } /* Checking */ for (i = 0; i < count; 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) { const char *src_w_slash = add_slash(src); int len_w_slash = length + 1; int first, 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) bad = "source directory is empty"; else { int j, dst_len; if (last - first > 0) { source = xrealloc(source, (count + last - first) * sizeof(char *)); destination = xrealloc(destination, (count + last - first) * sizeof(char *)); modes = xrealloc(modes, (count + last - first) * sizeof(enum update_mode)); } dst = add_slash(dst); dst_len = strlen(dst) - 1; for (j = 0; j < last - first; j++) { const char *path = active_cache[first + j]->name; source[count + j] = path; destination[count + j] = prefix_path(dst, dst_len, path + length); modes[count + j] = INDEX; } count += last - first; } } else if (lstat(dst, &st) == 0) { bad = "destination exists"; if (force) { /* * only files can overwrite each other: * check both source and destination */ if (S_ISREG(st.st_mode)) { fprintf(stderr, "Warning: %s;" " will overwrite!\n", bad); bad = NULL; path_list_insert(dst, &overwritten); } else bad = "Cannot overwrite"; } } else if (cache_name_pos(src, length) < 0) bad = "not under version control"; else if (path_list_has_path(&src_for_dst, dst)) bad = "multiple sources for the same target"; else path_list_insert(dst, &src_for_dst); if (bad) { if (ignore_errors) { if (--count > 0) { memmove(source + i, source + i + 1, (count - i) * sizeof(char *)); memmove(destination + i, destination + i + 1, (count - i) * sizeof(char *)); } } else die ("%s, source=%s, destination=%s", bad, src, dst); } } for (i = 0; i < count; i++) { const char *src = source[i], *dst = destination[i]; enum update_mode mode = modes[i]; if (show_only || verbose) printf("Renaming %s to %s\n", src, dst); if (!show_only && mode != INDEX && rename(src, dst) < 0 && !ignore_errors) die ("renaming %s failed: %s", src, strerror(errno)); if (mode == WORKING_DIRECTORY) continue; if (cache_name_pos(src, strlen(src)) >= 0) { path_list_insert(src, &deleted); /* destination can be a directory with 1 file inside */ if (path_list_has_path(&overwritten, dst)) path_list_insert(dst, &changed); else path_list_insert(dst, &added); } else path_list_insert(dst, &added); } if (show_only) { show_list("Changed : ", &changed); show_list("Adding : ", &added); show_list("Deleting : ", &deleted); } else { for (i = 0; i < changed.nr; i++) { const char *path = changed.items[i].path; int j = cache_name_pos(path, strlen(path)); struct cache_entry *ce = active_cache[j]; if (j < 0) die ("Huh? Cache entry for %s unknown?", path); refresh_cache_entry(ce, 0); } for (i = 0; i < added.nr; i++) { const char *path = added.items[i].path; add_file_to_cache(path, verbose); } for (i = 0; i < deleted.nr; i++) { const char *path = deleted.items[i].path; remove_file_from_cache(path); cache_tree_invalidate_path(active_cache_tree, path); } if (active_cache_changed) { if (write_cache(newfd, active_cache, active_nr) || close(newfd) || commit_locked_index(&lock_file)) die("Unable to write new index file"); } } return 0; }