/* Copyright (C) 1996, 1997, 1998, 1999, 2000 Aladdin Enterprises.  All rights reserved.
  
  This software is provided AS-IS with no warranty, either express or
  implied.
  
  This software is distributed under license and may not be copied,
  modified or distributed except as expressly authorized under the terms
  of the license contained in the file LICENSE in this distribution.
  
  For more information about licensing, please refer to
  http://www.ghostscript.com/licensing/. For information on
  commercial licensing, go to http://www.artifex.com/licensing/ or
  contact Artifex Software, Inc., 101 Lucas Valley Road #110,
  San Rafael, CA  94903, U.S.A., +1(415)492-9861.
*/

/* $Id: zfcid.c,v 1.14 2003/06/09 13:58:21 alexcher Exp $ */
/* CID-keyed font utilities */
#include "ghost.h"
#include "oper.h"
#include "gsmatrix.h"
#include "gxfcid.h"
#include "bfont.h"
#include "icid.h"
#include "idict.h"
#include "idparam.h"
#include "ifcid.h"
#include "store.h"

/* Get the CIDSystemInfo of a CIDFont. */
int
cid_font_system_info_param(gs_cid_system_info_t *pcidsi, const ref *prfont)
{
    ref *prcidsi;

    if (dict_find_string(prfont, "CIDSystemInfo", &prcidsi) <= 0)
	return_error(e_rangecheck);
    return cid_system_info_param(pcidsi, prcidsi);
}

/* Get the additional information for a CIDFontType 0 or 2 CIDFont. */
int
cid_font_data_param(os_ptr op, gs_font_cid_data *pdata, ref *pGlyphDirectory)
{
    int code;
    ref *pgdir;

    check_type(*op, t_dictionary);
    if ((code = cid_font_system_info_param(&pdata->CIDSystemInfo, op)) < 0 ||
	(code = dict_int_param(op, "CIDCount", 0, max_int, -1,
			       &pdata->CIDCount)) < 0
	)
	return code;
    /*
     * If the font doesn't have a GlyphDirectory, GDBytes is required.
     * If it does have a GlyphDirectory, GDBytes may still be needed for
     * CIDMap: it's up to the client to check this.
     */
    if (dict_find_string(op, "GlyphDirectory", &pgdir) <= 0) {
	/* Standard CIDFont, require GDBytes. */
	make_null(pGlyphDirectory);
	return dict_int_param(op, "GDBytes", 1, MAX_GDBytes, 0,
			      &pdata->GDBytes);
    }
    if (r_has_type(pgdir, t_dictionary) || r_is_array(pgdir)) {
	/* GlyphDirectory, GDBytes is optional. */
	*pGlyphDirectory = *pgdir;
	code = dict_int_param(op, "GDBytes", 0, MAX_GDBytes, 0,
			      &pdata->GDBytes);
	return code;
    } else {
	return_error(e_typecheck);
    }
}