C++ remove_file_from_cache函数代码示例

static void update_index_from_diff(struct diff_queue_struct *q,
		struct diff_options *opt, void *data)
{
	int i;
	int intent_to_add = *(int *)data;

	for (i = 0; i < q->nr; i++) {
		struct diff_filespec *one = q->queue[i]->one;
		int is_missing = !(one->mode && !is_null_sha1(one->sha1));
		struct cache_entry *ce;

		if (is_missing && !intent_to_add) {
			remove_file_from_cache(one->path);
			continue;
		}

		ce = make_cache_entry(one->mode, one->sha1, one->path,
				      0, 0);
		if (!ce)
			die(_("make_cache_entry failed for path '%s'"),
			    one->path);
		if (is_missing) {
			ce->ce_flags |= CE_INTENT_TO_ADD;
			set_object_name_for_intent_to_add_entry(ce);
		}
		add_cache_entry(ce, ADD_CACHE_OK_TO_ADD | ADD_CACHE_OK_TO_REPLACE);
	}
}

static int unresolve_one(const char *path)
{
	int namelen = strlen(path);
	int pos;
	int ret = 0;
	struct cache_entry *ce_2 = NULL, *ce_3 = NULL;

	/* See if there is such entry in the index. */
	pos = cache_name_pos(path, namelen);
	if (pos < 0) {
		/* If there isn't, either it is unmerged, or
		 * resolved as "removed" by mistake.  We do not
		 * want to do anything in the former case.
		 */
		pos = -pos-1;
		if (pos < active_nr) {
			struct cache_entry *ce = active_cache[pos];
			if (ce_namelen(ce) == namelen &&
			    !memcmp(ce->name, path, namelen)) {
				fprintf(stderr,
					"%s: skipping still unmerged path.\n",
					path);
				goto free_return;
			}
		}
	}

	/* Grab blobs from given path from HEAD and MERGE_HEAD,
	 * stuff HEAD version in stage #2,
	 * stuff MERGE_HEAD version in stage #3.
	 */
	ce_2 = read_one_ent("our", head_sha1, path, namelen, 2);
	ce_3 = read_one_ent("their", merge_head_sha1, path, namelen, 3);

	if (!ce_2 || !ce_3) {
		ret = -1;
		goto free_return;
	}
	if (!hashcmp(ce_2->sha1, ce_3->sha1) &&
	    ce_2->ce_mode == ce_3->ce_mode) {
		fprintf(stderr, "%s: identical in both, skipping.\n",
			path);
		goto free_return;
	}

	remove_file_from_cache(path);
	if (add_cache_entry(ce_2, ADD_CACHE_OK_TO_ADD)) {
		error("%s: cannot add our version to the index.", path);
		ret = -1;
		goto free_return;
	}
	if (!add_cache_entry(ce_3, ADD_CACHE_OK_TO_ADD))
		return 0;
	error("%s: cannot add their version to the index.", path);
	ret = -1;
 free_return:
	free(ce_2);
	free(ce_3);
	return ret;
}

static void update_one(const char *path, const char *prefix, int prefix_length)
{
	const char *p = prefix_path(prefix, prefix_length, path);
	if (!verify_path(p)) {
		fprintf(stderr, "Ignoring path %s\n", path);
		goto free_return;
	}
	if (mark_valid_only) {
		if (mark_ce_flags(p, CE_VALID, mark_valid_only == MARK_FLAG))
			die("Unable to mark file %s", path);
		goto free_return;
	}
	if (mark_skip_worktree_only) {
		if (mark_ce_flags(p, CE_SKIP_WORKTREE, mark_skip_worktree_only == MARK_FLAG))
			die("Unable to mark file %s", path);
		goto free_return;
	}

	if (force_remove) {
		if (remove_file_from_cache(p))
			die("git update-index: unable to remove %s", path);
		report("remove '%s'", path);
		goto free_return;
	}
	if (process_path(p))
		die("Unable to process path %s", path);
	report("add '%s'", path);
 free_return:
	if (p < path || p > path + strlen(path))
		free((char *)p);
}

static int process_path(const char *path)
{
	int pos, len;
	struct stat st;
	const struct cache_entry *ce;

	len = strlen(path);
	if (has_symlink_leading_path(path, len))
		return error("'%s' is beyond a symbolic link", path);

	pos = cache_name_pos(path, len);
	ce = pos < 0 ? NULL : active_cache[pos];
	if (ce && ce_skip_worktree(ce)) {
		/*
		 * working directory version is assumed "good"
		 * so updating it does not make sense.
		 * On the other hand, removing it from index should work
		 */
		if (allow_remove && remove_file_from_cache(path))
			return error("%s: cannot remove from the index", path);
		return 0;
	}

	/*
	 * First things first: get the stat information, to decide
	 * what to do about the pathname!
	 */
	if (lstat(path, &st) < 0)
		return process_lstat_error(path, errno);

	if (S_ISDIR(st.st_mode))
		return process_directory(path, len, &st);

	return add_one_path(ce, path, len, &st);
}

static void update_one(const char *path)
{
	if (!verify_path(path)) {
		fprintf(stderr, "Ignoring path %s\n", path);
		return;
	}
	if (mark_valid_only) {
		if (mark_ce_flags(path, CE_VALID, mark_valid_only == MARK_FLAG))
			die("Unable to mark file %s", path);
		return;
	}
	if (mark_skip_worktree_only) {
		if (mark_ce_flags(path, CE_SKIP_WORKTREE, mark_skip_worktree_only == MARK_FLAG))
			die("Unable to mark file %s", path);
		return;
	}

	if (force_remove) {
		if (remove_file_from_cache(path))
			die("git update-index: unable to remove %s", path);
		report("remove '%s'", path);
		return;
	}
	if (process_path(path))
		die("Unable to process path %s", path);
	report("add '%s'", path);
}

static void update_index_from_diff(struct diff_queue_struct *q,
		struct diff_options *opt, void *data)
{
	int i;
	int *discard_flag = data;

	/* do_diff_cache() mangled the index */
	discard_cache();
	*discard_flag = 1;
	read_cache();

	for (i = 0; i < q->nr; i++) {
		struct diff_filespec *one = q->queue[i]->one;
		if (one->mode) {
			struct cache_entry *ce;
			ce = make_cache_entry(one->mode, one->sha1, one->path,
				0, 0);
			if (!ce)
				die("make_cache_entry failed for path '%s'",
				    one->path);
			add_cache_entry(ce, ADD_CACHE_OK_TO_ADD |
				ADD_CACHE_OK_TO_REPLACE);
		} else
			remove_file_from_cache(one->path);
	}
}

static int remove_one_path(const char *path)
{
	if (!allow_remove)
		return error("%s: does not exist and --remove not passed", path);
	if (remove_file_from_cache(path))
		return error("%s: cannot remove from the index", path);
	return 0;
}

static void conflict_rename_rename(struct merge_options *o,
				   struct rename *ren1,
				   const char *branch1,
				   struct rename *ren2,
				   const char *branch2)
{
	char *del[2];
	int delp = 0;
	const char *ren1_dst = ren1->pair->two->path;
	const char *ren2_dst = ren2->pair->two->path;
	const char *dst_name1 = ren1_dst;
	const char *dst_name2 = ren2_dst;
	if (string_list_has_string(&o->current_directory_set, ren1_dst)) {
		dst_name1 = del[delp++] = unique_path(o, ren1_dst, branch1);
		output(o, 1, "%s is a directory in %s adding as %s instead",
		       ren1_dst, branch2, dst_name1);
		remove_file(o, 0, ren1_dst, 0);
	}
	if (string_list_has_string(&o->current_directory_set, ren2_dst)) {
		dst_name2 = del[delp++] = unique_path(o, ren2_dst, branch2);
		output(o, 1, "%s is a directory in %s adding as %s instead",
		       ren2_dst, branch1, dst_name2);
		remove_file(o, 0, ren2_dst, 0);
	}
	if (o->call_depth) {
		remove_file_from_cache(dst_name1);
		remove_file_from_cache(dst_name2);
		/*
		 * Uncomment to leave the conflicting names in the resulting tree
		 *
		 * update_file(o, 0, ren1->pair->two->sha1, ren1->pair->two->mode, dst_name1);
		 * update_file(o, 0, ren2->pair->two->sha1, ren2->pair->two->mode, dst_name2);
		 */
	} else {
		update_stages(dst_name1, NULL, ren1->pair->two, NULL, 1);
		update_stages(dst_name2, NULL, NULL, ren2->pair->two, 1);
	}
	while (delp--)
		free(del[delp]);
}

static void add_remove_files(struct path_list *list)
{
	int i;
	for (i = 0; i < list->nr; i++) {
		struct stat st;
		struct path_list_item *p = &(list->items[i]);

		if (!lstat(p->path, &st))
			add_to_cache(p->path, &st, 0);
		else
			remove_file_from_cache(p->path);
	}
}

static void add_remove_files(struct string_list *list)
{
	int i;
	for (i = 0; i < list->nr; i++) {
		struct stat st;
		struct string_list_item *p = &(list->items[i]);

		if (!lstat(p->string, &st)) {
			if (add_to_cache(p->string, &st, 0))
				die("updating files failed");
		} else
			remove_file_from_cache(p->string);
	}
}

static int remove_file(struct merge_options *o, int clean,
		       const char *path, int no_wd)
{
	int update_cache = o->call_depth || clean;
	int update_working_directory = !o->call_depth && !no_wd;

	if (update_cache) {
		if (remove_file_from_cache(path))
			return -1;
	}
	if (update_working_directory) {
		if (remove_path(path) && errno != ENOENT)
			return -1;
	}
	return 0;
}

static int remove_file(int clean, const char *path, int no_wd)
{
	int update_cache = index_only || clean;
	int update_working_directory = !index_only && !no_wd;

	if (update_cache) {
		if (remove_file_from_cache(path))
			return -1;
	}
	if (update_working_directory) {
		unlink(path);
		if (errno != ENOENT || errno != EISDIR)
			return -1;
		remove_path(path);
	}
	return 0;
}

static void add_remove_files(struct string_list *list)
{
	int i;
	for (i = 0; i < list->nr; i++) {
		struct stat st;
		struct string_list_item *p = &(list->items[i]);

		/* p->util is skip-worktree */
		if (p->util)
			continue;

		if (!lstat(p->string, &st)) {
			if (add_to_cache(p->string, &st, 0))
				die(_("updating files failed"));
		} else
			remove_file_from_cache(p->string);
	}
}

static int update_stages(const char *path, struct diff_filespec *o,
			 struct diff_filespec *a, struct diff_filespec *b,
			 int clear)
{
	int options = ADD_CACHE_OK_TO_ADD | ADD_CACHE_OK_TO_REPLACE;
	if (clear)
		if (remove_file_from_cache(path))
			return -1;
	if (o)
		if (add_cacheinfo(o->mode, o->sha1, path, 1, 0, options))
			return -1;
	if (a)
		if (add_cacheinfo(a->mode, a->sha1, path, 2, 0, options))
			return -1;
	if (b)
		if (add_cacheinfo(b->mode, b->sha1, path, 3, 0, options))
			return -1;
	return 0;
}

static void update_one(const char *path)
{
	int stat_errno = 0;
	struct stat st;

	if (mark_valid_only || mark_skip_worktree_only || force_remove ||
	    mark_fsmonitor_only)
		st.st_mode = 0;
	else if (lstat(path, &st) < 0) {
		st.st_mode = 0;
		stat_errno = errno;
	} /* else stat is valid */

	if (!verify_path(path, st.st_mode)) {
		fprintf(stderr, "Ignoring path %s\n", path);
		return;
	}
	if (mark_valid_only) {
		if (mark_ce_flags(path, CE_VALID, mark_valid_only == MARK_FLAG))
			die("Unable to mark file %s", path);
		return;
	}
	if (mark_skip_worktree_only) {
		if (mark_ce_flags(path, CE_SKIP_WORKTREE, mark_skip_worktree_only == MARK_FLAG))
			die("Unable to mark file %s", path);
		return;
	}
	if (mark_fsmonitor_only) {
		if (mark_ce_flags(path, CE_FSMONITOR_VALID, mark_fsmonitor_only == MARK_FLAG))
			die("Unable to mark file %s", path);
		return;
	}

	if (force_remove) {
		if (remove_file_from_cache(path))
			die("git update-index: unable to remove %s", path);
		report("remove '%s'", path);
		return;
	}
	if (process_path(path, &st, stat_errno))
		die("Unable to process path %s", path);
	report("add '%s'", path);
}