[unix-history] / usr / othersrc / public / ghostscript-2.4.1 / zprops.c

/* Copyright (C) 1991, 1992 Aladdin Enterprises.  All rights reserved.
   Distributed by Free Software Foundation, Inc.

This file is part of Ghostscript.

Ghostscript is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY.  No author or distributor accepts responsibility
to anyone for the consequences of using it or for whether it serves any
particular purpose or works at all, unless he says so in writing.  Refer
to the Ghostscript General Public License for full details.

Everyone is granted permission to copy, modify and redistribute
Ghostscript, but only under the conditions described in the Ghostscript
General Public License.  A copy of this license is supposed to have been
given to you along with Ghostscript so you can know your rights and
responsibilities.  It should be in a file named COPYING.  Among other
things, the copyright notice and this notice must be preserved on all
copies.  */

/* zprops.c */
/* Device property operators */
#include "memory_.h"
#include "ghost.h"
#include "alloc.h"
#include "dict.h"
#include "errors.h"
#include "oper.h"
#include "name.h"
#include "store.h"
#include "gsprops.h"
#include "gsmatrix.h"			/* for gxdevice.h */
#include "gxdevice.h"

/* Imported procedures */
extern int array_get(P3(ref *, long, ref *));

/* Forward references */
private int props_to_stack(P3(gs_prop_item *, os_ptr, int));
private int props_from_stack(P3(gs_prop_item *, os_ptr, int));

/* getdeviceprops */
int
zgetdeviceprops(os_ptr op)
{	gx_device *dev;
	gs_prop_item *plist;
	int count;
	int code;
	check_type(*op, t_device);
	dev = op->value.pdevice;
	count = (*dev->procs->get_props)(dev, NULL);
	plist = (gs_prop_item *)alloc(count, sizeof(gs_prop_item), "getdeviceprops");
	if ( plist == 0 ) return_error(e_VMerror);
	(*dev->procs->get_props)(dev, plist);
	code = props_to_stack(plist, op + 1, count);
	alloc_free((char *)plist, count, sizeof(gs_prop_item), "getdeviceprops");
	if ( code >= 0 )
	   {	make_mark(op);
		push(code);
		code = 0;
	   }
	return code;
}

/* putdeviceprops */
int
zputdeviceprops(os_ptr op)
{	gx_device *dev;
	gs_prop_item *plist;
	os_ptr mp;
	int count, acount = 0;
	int code;
	check_type(*op, t_device);
	dev = op->value.pdevice;
	for ( mp = op - 1; !r_has_type(mp, t_mark); mp-- )
	   {	if ( mp <= osbot ) return e_unmatchedmark;
		switch ( r_type(mp) )
		   {
		case t_array:
		case t_mixedarray:
		case t_shortarray:
			acount += r_size(mp);
		   }
	   }
	count = op - mp - 1;
	if ( count & 1 ) return e_rangecheck;
	count >>= 1;
	plist = (gs_prop_item *)alloc(count + acount, sizeof(gs_prop_item), "putdeviceprops");
	if ( plist == 0 ) return_error(e_VMerror);
	code = props_from_stack(plist, mp + 1, count);
	if ( code >= 0 )
		code = (*dev->procs->put_props)(dev, plist, count + acount);
	alloc_free((char *)plist, count + acount, sizeof(gs_prop_item), "putdeviceprops");
	if ( code >= 0 )
	   {	*mp = *op;
		osp = op = mp;
	   }
	return code;
}

/* ------ Initialization procedure ------ */

op_def zprops_op_defs[] = {
	{"1getdeviceprops", zgetdeviceprops},
	{"2putdeviceprops", zputdeviceprops},
	op_def_end(0)
};

/* ------ Internal routines ------ */

/* Get properties from a property list to the stack. */
private int
props_to_stack(gs_prop_item *plist, os_ptr op0, int count)
{	gs_prop_item *pi;
	os_ptr op;
	int i;
	int code;
	for ( op = op0, pi = plist, i = count; i != 0; pi++, i-- )
	   {	ref value;
		const char *nstr = pi->pname;
		int nlen = pi->name_size;
		if ( nstr == 0 ) continue;	/* no name, skip */
		if ( ostop - op < 2 ) return e_stackoverflow;
		if ( nlen < 0 ) nlen = strlen(nstr);
		code = name_ref((const byte *)nstr, nlen, op, 0);
		if ( code < 0 ) return code;
		switch ( pi->type )
		   {
		case (int)prt_int:
			make_int(&value, pi->value.i);
			break;
		case (int)prt_float:
			make_real(&value, pi->value.f);
			break;
		case (int)prt_bool:
			make_bool(&value, pi->value.b);
			break;
		case (int)prt_string:
		   {	ushort size = pi->value.a.size;
			char *str;
			if ( size == (ushort)(-1) )
				size = strlen(pi->value.a.p.s);
			str = alloc(size, 1, "props_to_stack(string)");
			if ( str == 0 ) return e_VMerror;
			memcpy(str, pi->value.a.p.s, size);
			make_tasv(&value, t_string, a_all, size, bytes, (byte *)str);
		   }	break;
		case (int)prt_int_array:
		case (int)prt_float_array:
		   {	uint size = pi->value.a.size;
			ref *arefs = alloc_refs(size, "props_to_stack(array)");
			uint j;
			gs_prop_item *pv = pi->value.a.p.v;
			if ( arefs == 0 ) return e_VMerror;
			make_tasv_new(&value, t_array, a_all, size, refs, arefs);
			for ( j = 0; j < size; j++, arefs++, pv++ )
			  if ( pi->type == prt_int_array )
				make_int_new(arefs, pv->value.i);
			  else
				make_real_new(arefs, pv->value.f);
		   }	break;
		default:
			return e_typecheck;
		   }
		ref_assign(op + 1, &value);
		op += 2;
	   }
	return op - op0;
}

/* Set properties from the stack. */
/* Returns the number of elements copied. */
/* Entries with non-name keys are not copied; */
/* entries with invalid values are copied with status = pv_typecheck. */
private int
props_from_stack(gs_prop_item *plist /* [count + acount] */, os_ptr op0,
  int count)
{	gs_prop_item *pi = plist;
	gs_prop_item *pai = plist + count;
	os_ptr op = op0 + 1;
	for ( ; count; op += 2, count-- )
	   {	ref sref;
		if ( !r_has_type(op - 1, t_name) ) return e_typecheck;
		name_string_ref(op - 1, &sref);
		pi->pname = (char *)sref.value.bytes;
		pi->name_size = r_size(&sref);
		pi->status = pv_set;
		switch ( r_type(op) )
		   {
		case t_null:
			pi->type = prt_null;
			break;
		case t_integer:
			pi->type = prt_int;
			pi->value.i = op->value.intval;
			break;
		case t_real:
			pi->type = prt_float;
			pi->value.f = op->value.realval;
			break;
		case t_boolean:
			pi->type = prt_bool;
			pi->value.b = op->value.index;
			break;
		case t_name:
			name_string_ref(op, &sref);
			goto nst;
		case t_string:
			ref_assign(&sref, op);
			pi->type = prt_string;
			pi->value.a.p.s = (char *)op->value.bytes;
nst:			pi->value.a.size = r_size(&sref);
			break;
		case t_array:
		case t_mixedarray:
		case t_shortarray:
		   {	uint size = r_size(op);
			uint i;
			gs_prop_item *pv;
			gs_prop_type tv = prt_int;
			pi->type = prt_int_array;
			pi->value.a.p.v = pai;
			pi->value.a.size = size;
top:			pv = pai;
			for ( i = 0; i < size; i++ )
			   {	ref rnum;
				array_get(op, (long)i, &rnum);
				pv->pname = 0;
				pv->type = tv;
				switch ( r_type(&rnum) )
				   {
				case t_real:
					if ( tv == prt_int )
					   {	tv = prt_float;
						pi->type = prt_float_array;
						goto top;
					   }
					pv++->value.f = rnum.value.realval;
					break;
				case t_integer:
					if ( tv == prt_int )
					  pv++->value.i = rnum.value.intval;
					else
					  pv++->value.f = rnum.value.intval;
					break;
				default:
					pi->status = pv_typecheck;
				   }
			   }

			pai = pv;
		   }	break;
		default:
			pi->status = pv_typecheck;
		   }
		pi++;
	   }
	return 0;
}
Commit	Line	Data
0efb8845 WJ	1	/* Copyright (C) 1991, 1992 Aladdin Enterprises. All rights reserved.
	2	Distributed by Free Software Foundation, Inc.
	3
	4	This file is part of Ghostscript.
	5
	6	Ghostscript is distributed in the hope that it will be useful, but
	7	WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
	8	to anyone for the consequences of using it or for whether it serves any
	9	particular purpose or works at all, unless he says so in writing. Refer
	10	to the Ghostscript General Public License for full details.
	11
	12	Everyone is granted permission to copy, modify and redistribute
	13	Ghostscript, but only under the conditions described in the Ghostscript
	14	General Public License. A copy of this license is supposed to have been
	15	given to you along with Ghostscript so you can know your rights and
	16	responsibilities. It should be in a file named COPYING. Among other
	17	things, the copyright notice and this notice must be preserved on all
	18	copies. */
	19
	20	/* zprops.c */
	21	/* Device property operators */
	22	#include "memory_.h"
	23	#include "ghost.h"
	24	#include "alloc.h"
	25	#include "dict.h"
	26	#include "errors.h"
	27	#include "oper.h"
	28	#include "name.h"
	29	#include "store.h"
	30	#include "gsprops.h"
	31	#include "gsmatrix.h" /* for gxdevice.h */
	32	#include "gxdevice.h"
	33
	34	/* Imported procedures */
	35	extern int array_get(P3(ref , long, ref ));
	36
	37	/* Forward references */
	38	private int props_to_stack(P3(gs_prop_item *, os_ptr, int));
	39	private int props_from_stack(P3(gs_prop_item *, os_ptr, int));
	40
	41	/* getdeviceprops */
	42	int
	43	zgetdeviceprops(os_ptr op)
	44	{ gx_device *dev;
	45	gs_prop_item *plist;
	46	int count;
	47	int code;
	48	check_type(*op, t_device);
	49	dev = op->value.pdevice;
	50	count = (*dev->procs->get_props)(dev, NULL);
	51	plist = (gs_prop_item *)alloc(count, sizeof(gs_prop_item), "getdeviceprops");
	52	if ( plist == 0 ) return_error(e_VMerror);
	53	(*dev->procs->get_props)(dev, plist);
	54	code = props_to_stack(plist, op + 1, count);
	55	alloc_free((char *)plist, count, sizeof(gs_prop_item), "getdeviceprops");
	56	if ( code >= 0 )
	57	{ make_mark(op);
	58	push(code);
	59	code = 0;
	60	}
	61	return code;
	62	}
	63
	64	/* putdeviceprops */
65	int
66	zputdeviceprops(os_ptr op)
67	{ gx_device *dev;
68	gs_prop_item *plist;
69	os_ptr mp;
70	int count, acount = 0;
71	int code;
72	check_type(*op, t_device);
73	dev = op->value.pdevice;
74	for ( mp = op - 1; !r_has_type(mp, t_mark); mp-- )
75	{ if ( mp <= osbot ) return e_unmatchedmark;
76	switch ( r_type(mp) )
77	{
78	case t_array:
79	case t_mixedarray:
80	case t_shortarray:
81	acount += r_size(mp);
82	}
83	}
84	count = op - mp - 1;
85	if ( count & 1 ) return e_rangecheck;
86	count >>= 1;
87	plist = (gs_prop_item *)alloc(count + acount, sizeof(gs_prop_item), "putdeviceprops");
88	if ( plist == 0 ) return_error(e_VMerror);
89	code = props_from_stack(plist, mp + 1, count);
90	if ( code >= 0 )
91	code = (*dev->procs->put_props)(dev, plist, count + acount);
92	alloc_free((char *)plist, count + acount, sizeof(gs_prop_item), "putdeviceprops");
93	if ( code >= 0 )
94	{ mp = op;
95	osp = op = mp;
96	}
97	return code;
98	}
99
100	/* ------ Initialization procedure ------ */
101
102	op_def zprops_op_defs[] = {
103	{"1getdeviceprops", zgetdeviceprops},
104	{"2putdeviceprops", zputdeviceprops},
105	op_def_end(0)
106	};
107
108	/* ------ Internal routines ------ */
109
110	/* Get properties from a property list to the stack. */
111	private int
112	props_to_stack(gs_prop_item *plist, os_ptr op0, int count)
113	{ gs_prop_item *pi;
114	os_ptr op;
115	int i;
116	int code;
117	for ( op = op0, pi = plist, i = count; i != 0; pi++, i-- )
118	{ ref value;
119	const char *nstr = pi->pname;
120	int nlen = pi->name_size;
121	if ( nstr == 0 ) continue; /* no name, skip */
122	if ( ostop - op < 2 ) return e_stackoverflow;
123	if ( nlen < 0 ) nlen = strlen(nstr);
124	code = name_ref((const byte *)nstr, nlen, op, 0);
125	if ( code < 0 ) return code;
126	switch ( pi->type )
127	{
128	case (int)prt_int:
129	make_int(&value, pi->value.i);
130	break;
131	case (int)prt_float:
132	make_real(&value, pi->value.f);
133	break;
134	case (int)prt_bool:
135	make_bool(&value, pi->value.b);
136	break;
137	case (int)prt_string:
138	{ ushort size = pi->value.a.size;
139	char *str;
140	if ( size == (ushort)(-1) )
141	size = strlen(pi->value.a.p.s);
142	str = alloc(size, 1, "props_to_stack(string)");
143	if ( str == 0 ) return e_VMerror;
144	memcpy(str, pi->value.a.p.s, size);
145	make_tasv(&value, t_string, a_all, size, bytes, (byte *)str);
146	} break;
147	case (int)prt_int_array:
148	case (int)prt_float_array:
149	{ uint size = pi->value.a.size;
150	ref *arefs = alloc_refs(size, "props_to_stack(array)");
151	uint j;
152	gs_prop_item *pv = pi->value.a.p.v;
153	if ( arefs == 0 ) return e_VMerror;
154	make_tasv_new(&value, t_array, a_all, size, refs, arefs);
155	for ( j = 0; j < size; j++, arefs++, pv++ )
156	if ( pi->type == prt_int_array )
157	make_int_new(arefs, pv->value.i);
158	else
159	make_real_new(arefs, pv->value.f);
160	} break;
161	default:
162	return e_typecheck;
163	}
164	ref_assign(op + 1, &value);
165	op += 2;
166	}
167	return op - op0;
168	}
169
170	/* Set properties from the stack. */
171	/* Returns the number of elements copied. */
172	/* Entries with non-name keys are not copied; */
173	/* entries with invalid values are copied with status = pv_typecheck. */
174	private int
175	props_from_stack(gs_prop_item plist / [count + acount] */, os_ptr op0,
176	int count)
177	{ gs_prop_item *pi = plist;
178	gs_prop_item *pai = plist + count;
179	os_ptr op = op0 + 1;
180	for ( ; count; op += 2, count-- )
181	{ ref sref;
182	if ( !r_has_type(op - 1, t_name) ) return e_typecheck;
183	name_string_ref(op - 1, &sref);
184	pi->pname = (char *)sref.value.bytes;
185	pi->name_size = r_size(&sref);
186	pi->status = pv_set;
187	switch ( r_type(op) )
188	{
189	case t_null:
190	pi->type = prt_null;
191	break;
192	case t_integer:
193	pi->type = prt_int;
194	pi->value.i = op->value.intval;
195	break;
196	case t_real:
197	pi->type = prt_float;
198	pi->value.f = op->value.realval;
199	break;
200	case t_boolean:
201	pi->type = prt_bool;
202	pi->value.b = op->value.index;
203	break;
204	case t_name:
205	name_string_ref(op, &sref);
206	goto nst;
207	case t_string:
208	ref_assign(&sref, op);
209	pi->type = prt_string;
210	pi->value.a.p.s = (char *)op->value.bytes;
211	nst: pi->value.a.size = r_size(&sref);
212	break;
213	case t_array:
214	case t_mixedarray:
215	case t_shortarray:
216	{ uint size = r_size(op);
217	uint i;
218	gs_prop_item *pv;
219	gs_prop_type tv = prt_int;
220	pi->type = prt_int_array;
221	pi->value.a.p.v = pai;
222	pi->value.a.size = size;
223	top: pv = pai;
224	for ( i = 0; i < size; i++ )
225	{ ref rnum;
226	array_get(op, (long)i, &rnum);
227	pv->pname = 0;
228	pv->type = tv;
229	switch ( r_type(&rnum) )
230	{
231	case t_real:
232	if ( tv == prt_int )
233	{ tv = prt_float;
234	pi->type = prt_float_array;
235	goto top;
236	}
237	pv++->value.f = rnum.value.realval;
238	break;
239	case t_integer:
240	if ( tv == prt_int )
241	pv++->value.i = rnum.value.intval;
242	else
243	pv++->value.f = rnum.value.intval;
244	break;
245	default:
246	pi->status = pv_typecheck;
247	}
248	}
249
250	pai = pv;
251	} break;
252	default:
253	pi->status = pv_typecheck;
254	}
255	pi++;
256	}
257	return 0;
258	}