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-rw-r--r--builtin-rm.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/builtin-rm.c b/builtin-rm.c
new file mode 100644
index 0000000..9a808c1
--- /dev/null
+++ b/builtin-rm.c
@@ -0,0 +1,264 @@
+/*
+ * "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"
+
+static const char builtin_rm_usage[] =
+"git-rm [-f] [-n] [-r] [--cached] [--ignore-unmatch] [--quiet] [--] <file>...";
+
+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 remove_file(const char *name)
+{
+ int ret;
+ char *slash;
+
+ ret = unlink(name);
+ if (ret && errno == ENOENT)
+ /* The user has removed it from the filesystem by hand */
+ ret = errno = 0;
+
+ if (!ret && (slash = strrchr(name, '/'))) {
+ char *n = xstrdup(name);
+ do {
+ n[slash - name] = 0;
+ name = n;
+ } while (!rmdir(name) && (slash = strrchr(name, '/')));
+ }
+ return ret;
+}
+
+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;
+ }
+ if (ce_match_stat(ce, &st, 0))
+ local_changes = 1;
+ 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 (local_changes && staged_changes)
+ 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) {
+ /* It's not dangerous to git-rm --cached a
+ * file if the index matches the file or the
+ * HEAD, since it means the deleted content is
+ * still available somewhere.
+ */
+ 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;
+
+int cmd_rm(int argc, const char **argv, const char *prefix)
+{
+ int i, newfd;
+ int show_only = 0, force = 0, index_only = 0, recursive = 0, quiet = 0;
+ int ignore_unmatch = 0;
+ const char **pathspec;
+ char *seen;
+
+ 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 != '-')
+ break;
+ else if (!strcmp(arg, "--")) {
+ i++;
+ break;
+ }
+ else if (!strcmp(arg, "-n"))
+ show_only = 1;
+ else if (!strcmp(arg, "--cached"))
+ index_only = 1;
+ else if (!strcmp(arg, "-f"))
+ force = 1;
+ else if (!strcmp(arg, "-r"))
+ recursive = 1;
+ else if (!strcmp(arg, "--quiet"))
+ quiet = 1;
+ else if (!strcmp(arg, "--ignore-unmatch"))
+ ignore_unmatch = 1;
+ else
+ usage(builtin_rm_usage);
+ }
+ if (argc <= i)
+ usage(builtin_rm_usage);
+
+ pathspec = get_pathspec(prefix, argv + i);
+ 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);
+ cache_tree_invalidate_path(active_cache_tree, 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_file(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) ||
+ close(newfd) || commit_locked_index(&lock_file))
+ die("Unable to write new index file");
+ }
+
+ return 0;
+}
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