Esempio n. 1
0
static void sweepobj(fz_obj *obj)
{
	int i;

	if (fz_is_indirect(obj))
		sweepref(obj);

	else if (fz_is_dict(ctx, obj))
		for (i = 0; i < fz_dict_len(ctx, obj); i++)
			sweepobj(fz_dict_get_val(ctx, obj, i));

	else if (fz_is_array(ctx, obj))
		for (i = 0; i < fz_array_len(ctx, obj); i++)
			sweepobj(fz_array_get(ctx, obj, i));
}
Esempio n. 2
0
fz_obj *
fz_copy_dict(fz_context *ctx, fz_obj *obj)
{
	fz_obj *dict;
	int i, n;

	RESOLVE(obj);
	if (obj && obj->kind != FZ_DICT)
		fz_warn(ctx, "assert: not a dict (%s)", fz_objkindstr(obj));

	n = fz_dict_len(obj);
	dict = fz_new_dict(ctx, n);
	for (i = 0; i < n; i++)
		fz_dict_put(dict, fz_dict_get_key(obj, i), fz_dict_get_val(obj, i));

	return dict;
}
Esempio n. 3
0
static void renumberobj(fz_obj *obj)
{
	int i;
	fz_context *ctx = xref->ctx;

	if (fz_is_dict(obj))
	{
		int n = fz_dict_len(obj);
		for (i = 0; i < n; i++)
		{
			fz_obj *key = fz_dict_get_key(obj, i);
			fz_obj *val = fz_dict_get_val(obj, i);
			if (fz_is_indirect(val))
			{
				val = fz_new_indirect(ctx, renumbermap[fz_to_num(val)], 0, xref);
				fz_dict_put(obj, key, val);
				fz_drop_obj(val);
			}
			else
			{
				renumberobj(val);
			}
		}
	}

	else if (fz_is_array(obj))
	{
		int n = fz_array_len(obj);
		for (i = 0; i < n; i++)
		{
			fz_obj *val = fz_array_get(obj, i);
			if (fz_is_indirect(val))
			{
				val = fz_new_indirect(ctx, renumbermap[fz_to_num(val)], 0, xref);
				fz_array_put(obj, i, val);
				fz_drop_obj(val);
			}
			else
			{
				renumberobj(val);
			}
		}
	}
}
Esempio n. 4
0
static void sweepobj(fz_obj *obj)
{
	int i;

	if (fz_is_indirect(obj))
		sweepref(obj);

	else if (fz_is_dict(obj))
	{
		int n = fz_dict_len(obj);
		for (i = 0; i < n; i++)
			sweepobj(fz_dict_get_val(obj, i));
	}

	else if (fz_is_array(obj))
	{
		int n = fz_array_len(obj);
		for (i = 0; i < n; i++)
			sweepobj(fz_array_get(obj, i));
	}
}
Esempio n. 5
0
static void retainpages(int argc, char **argv)
{
	fz_obj *oldroot, *root, *pages, *kids, *countobj, *parent, *olddests;

	/* Keep only pages/type and (reduced) dest entries to avoid
	 * references to unretained pages */
	oldroot = fz_dict_gets(xref->trailer, "Root");
	pages = fz_dict_gets(oldroot, "Pages");
	olddests = pdf_load_name_tree(xref, "Dests");

	root = fz_new_dict(ctx, 2);
	fz_dict_puts(root, "Type", fz_dict_gets(oldroot, "Type"));
	fz_dict_puts(root, "Pages", fz_dict_gets(oldroot, "Pages"));

	pdf_update_object(xref, fz_to_num(oldroot), fz_to_gen(oldroot), root);

	fz_drop_obj(root);

	/* Create a new kids array with only the pages we want to keep */
	parent = fz_new_indirect(ctx, fz_to_num(pages), fz_to_gen(pages), xref);
	kids = fz_new_array(ctx, 1);

	/* Retain pages specified */
	while (argc - fz_optind)
	{
		int page, spage, epage;
		char *spec, *dash;
		char *pagelist = argv[fz_optind];

		spec = fz_strsep(&pagelist, ",");
		while (spec)
		{
			dash = strchr(spec, '-');

			if (dash == spec)
				spage = epage = pdf_count_pages(xref);
			else
				spage = epage = atoi(spec);

			if (dash)
			{
				if (strlen(dash) > 1)
					epage = atoi(dash + 1);
				else
					epage = pdf_count_pages(xref);
			}

			if (spage > epage)
				page = spage, spage = epage, epage = page;

			if (spage < 1)
				spage = 1;
			if (epage > pdf_count_pages(xref))
				epage = pdf_count_pages(xref);

			for (page = spage; page <= epage; page++)
			{
				fz_obj *pageobj = xref->page_objs[page-1];
				fz_obj *pageref = xref->page_refs[page-1];

				fz_dict_puts(pageobj, "Parent", parent);

				/* Store page object in new kids array */
				fz_array_push(kids, pageref);
			}

			spec = fz_strsep(&pagelist, ",");
		}

		fz_optind++;
	}

	fz_drop_obj(parent);

	/* Update page count and kids array */
	countobj = fz_new_int(ctx, fz_array_len(kids));
	fz_dict_puts(pages, "Count", countobj);
	fz_drop_obj(countobj);
	fz_dict_puts(pages, "Kids", kids);
	fz_drop_obj(kids);

	/* Also preserve the (partial) Dests name tree */
	if (olddests)
	{
		int i;
		fz_obj *names = fz_new_dict(ctx, 1);
		fz_obj *dests = fz_new_dict(ctx, 1);
		fz_obj *names_list = fz_new_array(ctx, 32);

		for (i = 0; i < fz_dict_len(olddests); i++)
		{
			fz_obj *key = fz_dict_get_key(olddests, i);
			fz_obj *val = fz_dict_get_val(olddests, i);
			fz_obj *key_str = fz_new_string(ctx, fz_to_name(key), strlen(fz_to_name(key)));
			fz_obj *dest = fz_dict_gets(val, "D");

			dest = fz_array_get(dest ? dest : val, 0);
			if (fz_array_contains(fz_dict_gets(pages, "Kids"), dest))
			{
				fz_array_push(names_list, key_str);
				fz_array_push(names_list, val);
			}
			fz_drop_obj(key_str);
		}

		root = fz_dict_gets(xref->trailer, "Root");
		fz_dict_puts(dests, "Names", names_list);
		fz_dict_puts(names, "Dests", dests);
		fz_dict_puts(root, "Names", names);

		fz_drop_obj(names);
		fz_drop_obj(dests);
		fz_drop_obj(names_list);
		fz_drop_obj(olddests);
	}
}