/* * "git rm" builtin command * * Copyright (C) Linus Torvalds 2006 */ #include "cache.h" #include "builtin.h" #include "dir.h" #include "cache-tree.h" #include "tree-walk.h" #include "parse-options.h" static const char * const builtin_rm_usage[] = { "git rm [options] [--] <file>...", NULL }; static struct { int nr, alloc; const char **name; } list; static void add_list(const char *name) { if (list.nr >= list.alloc) { list.alloc = alloc_nr(list.alloc); list.name = xrealloc(list.name, list.alloc * sizeof(const char *)); } list.name[list.nr++] = name; } static int check_local_mod(unsigned char *head, int index_only) { /* * Items in list are already sorted in the cache order, * so we could do this a lot more efficiently by using * tree_desc based traversal if we wanted to, but I am * lazy, and who cares if removal of files is a tad * slower than the theoretical maximum speed? */ int i, no_head; int errs = 0; no_head = is_null_sha1(head); for (i = 0; i < list.nr; i++) { struct stat st; int pos; struct cache_entry *ce; const char *name = list.name[i]; unsigned char sha1[20]; unsigned mode; int local_changes = 0; int staged_changes = 0; pos = cache_name_pos(name, strlen(name)); if (pos < 0) continue; /* removing unmerged entry */ ce = active_cache[pos]; if (lstat(ce->name, &st) < 0) { if (errno != ENOENT) fprintf(stderr, "warning: '%s': %s", ce->name, strerror(errno)); /* It already vanished from the working tree */ continue; } else if (S_ISDIR(st.st_mode)) { /* if a file was removed and it is now a * directory, that is the same as ENOENT as * far as git is concerned; we do not track * directories. */ continue; } /* * "rm" of a path that has changes need to be treated * carefully not to allow losing local changes * accidentally. A local change could be (1) file in * work tree is different since the index; and/or (2) * the user staged a content that is different from * the current commit in the index. * * In such a case, you would need to --force the * removal. However, "rm --cached" (remove only from * the index) is safe if the index matches the file in * the work tree or the HEAD commit, as it means that * the content being removed is available elsewhere. */ /* * Is the index different from the file in the work tree? */ if (ce_match_stat(ce, &st, 0)) local_changes = 1; /* * Is the index different from the HEAD commit? By * definition, before the very initial commit, * anything staged in the index is treated by the same * way as changed from the HEAD. */ if (no_head || get_tree_entry(head, name, sha1, &mode) || ce->ce_mode != create_ce_mode(mode) || hashcmp(ce->sha1, sha1)) staged_changes = 1; /* * If the index does not match the file in the work * tree and if it does not match the HEAD commit * either, (1) "git rm" without --cached definitely * will lose information; (2) "git rm --cached" will * lose information unless it is about removing an * "intent to add" entry. */ if (local_changes && staged_changes) { if (!index_only || !(ce->ce_flags & CE_INTENT_TO_ADD)) errs = error("'%s' has staged content different " "from both the file and the HEAD\n" "(use -f to force removal)", name); } else if (!index_only) { if (staged_changes) errs = error("'%s' has changes staged in the index\n" "(use --cached to keep the file, " "or -f to force removal)", name); if (local_changes) errs = error("'%s' has local modifications\n" "(use --cached to keep the file, " "or -f to force removal)", name); } } return errs; } static struct lock_file lock_file; static int show_only = 0, force = 0, index_only = 0, recursive = 0, quiet = 0; static int ignore_unmatch = 0; static struct option builtin_rm_options[] = { OPT__DRY_RUN(&show_only), OPT__QUIET(&quiet), OPT_BOOLEAN( 0 , "cached", &index_only, "only remove from the index"), OPT_BOOLEAN('f', "force", &force, "override the up-to-date check"), OPT_BOOLEAN('r', NULL, &recursive, "allow recursive removal"), OPT_BOOLEAN( 0 , "ignore-unmatch", &ignore_unmatch, "exit with a zero status even if nothing matched"), OPT_END(), }; int cmd_rm(int argc, const char **argv, const char *prefix) { int i, newfd; const char **pathspec; char *seen; git_config(git_default_config, NULL); argc = parse_options(argc, argv, builtin_rm_options, builtin_rm_usage, 0); if (!argc) usage_with_options(builtin_rm_usage, builtin_rm_options); if (!index_only) setup_work_tree(); newfd = hold_locked_index(&lock_file, 1); if (read_cache() < 0) die("index file corrupt"); refresh_cache(REFRESH_QUIET); pathspec = get_pathspec(prefix, argv); seen = NULL; for (i = 0; pathspec[i] ; i++) /* nothing */; seen = xcalloc(i, 1); for (i = 0; i < active_nr; i++) { struct cache_entry *ce = active_cache[i]; if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen)) continue; add_list(ce->name); } if (pathspec) { const char *match; int seen_any = 0; for (i = 0; (match = pathspec[i]) != NULL ; i++) { if (!seen[i]) { if (!ignore_unmatch) { die("pathspec '%s' did not match any files", match); } } else { seen_any = 1; } if (!recursive && seen[i] == MATCHED_RECURSIVELY) die("not removing '%s' recursively without -r", *match ? match : "."); } if (! seen_any) exit(0); } /* * If not forced, the file, the index and the HEAD (if exists) * must match; but the file can already been removed, since * this sequence is a natural "novice" way: * * rm F; git rm F * * Further, if HEAD commit exists, "diff-index --cached" must * report no changes unless forced. */ if (!force) { unsigned char sha1[20]; if (get_sha1("HEAD", sha1)) hashclr(sha1); if (check_local_mod(sha1, index_only)) exit(1); } /* * First remove the names from the index: we won't commit * the index unless all of them succeed. */ for (i = 0; i < list.nr; i++) { const char *path = list.name[i]; if (!quiet) printf("rm '%s'\n", path); if (remove_file_from_cache(path)) die("git rm: unable to remove %s", path); } if (show_only) return 0; /* * Then, unless we used "--cached", remove the filenames from * the workspace. If we fail to remove the first one, we * abort the "git rm" (but once we've successfully removed * any file at all, we'll go ahead and commit to it all: * by then we've already committed ourselves and can't fail * in the middle) */ if (!index_only) { int removed = 0; for (i = 0; i < list.nr; i++) { const char *path = list.name[i]; if (!remove_path(path)) { removed = 1; continue; } if (!removed) die("git rm: %s: %s", path, strerror(errno)); } } if (active_cache_changed) { if (write_cache(newfd, active_cache, active_nr) || commit_locked_index(&lock_file)) die("Unable to write new index file"); } return 0; }