DRI.c revision 6747b715 
1/* DRI.c -- DRI Section in XF86Config file
2 * Created: Fri Mar 19 08:40:22 1999 by faith@precisioninsight.com
3 * Revised: Thu Jun 17 16:08:05 1999 by faith@precisioninsight.com
4 *
5 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
6 * All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
17 * Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
22 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
26 *
27 *
28 */
29
30#ifdef HAVE_XORG_CONFIG_H
31#include <xorg-config.h>
32#endif
33
34#include "xf86Parser.h"
35#include "xf86tokens.h"
36#include "Configint.h"
37
38extern LexRec val;
39
40static xf86ConfigSymTabRec DRITab[] =
41{
42    {ENDSECTION, "endsection"},
43    {GROUP,      "group"},
44    {BUFFERS,    "buffers"},
45    {MODE,       "mode"},
46    {-1,         ""},
47};
48
49#define CLEANUP xf86freeBuffersList
50
51static void
52xf86freeBuffersList (XF86ConfBuffersPtr ptr)
53{
54    XF86ConfBuffersPtr prev;
55
56    while (ptr) {
57	TestFree (ptr->buf_flags);
58	TestFree (ptr->buf_comment);
59	prev = ptr;
60	ptr  = ptr->list.next;
61	free (prev);
62    }
63}
64
65static XF86ConfBuffersPtr
66xf86parseBuffers (void)
67{
68    int token;
69    parsePrologue (XF86ConfBuffersPtr, XF86ConfBuffersRec)
70
71    if (xf86getSubToken (&(ptr->buf_comment)) != NUMBER)
72	Error ("Buffers count expected", NULL);
73    ptr->buf_count = val.num;
74
75    if (xf86getSubToken (&(ptr->buf_comment)) != NUMBER)
76	Error ("Buffers size expected", NULL);
77    ptr->buf_size = val.num;
78
79    if ((token = xf86getSubToken (&(ptr->buf_comment))) == STRING) {
80	ptr->buf_flags = val.str;
81	if ((token = xf86getToken (NULL)) == COMMENT)
82	    ptr->buf_comment = xf86addComment(ptr->buf_comment, val.str);
83	else
84	    xf86unGetToken(token);
85    }
86
87#ifdef DEBUG
88    printf ("Buffers parsed\n");
89#endif
90
91    return ptr;
92}
93
94#undef CLEANUP
95
96#define CLEANUP xf86freeDRI
97
98XF86ConfDRIPtr
99xf86parseDRISection (void)
100{
101    int token;
102    parsePrologue (XF86ConfDRIPtr, XF86ConfDRIRec);
103
104    /* Zero is a valid value for this. */
105    ptr->dri_group = -1;
106    while ((token = xf86getToken (DRITab)) != ENDSECTION) {
107	switch (token)
108	    {
109	    case GROUP:
110		if ((token = xf86getSubToken (&(ptr->dri_comment))) == STRING)
111		    ptr->dri_group_name = val.str;
112		else if (token == NUMBER)
113		    ptr->dri_group = val.num;
114		else
115		    Error (GROUP_MSG, NULL);
116		break;
117	    case MODE:
118		if (xf86getSubToken (&(ptr->dri_comment)) != NUMBER)
119		    Error (NUMBER_MSG, "Mode");
120                if (val.numType != PARSE_OCTAL)
121                    Error (MUST_BE_OCTAL_MSG, val.num);
122		ptr->dri_mode = val.num;
123		break;
124	    case BUFFERS:
125		HANDLE_LIST (dri_buffers_lst, xf86parseBuffers,
126			     XF86ConfBuffersPtr);
127		break;
128	    case EOF_TOKEN:
129		Error (UNEXPECTED_EOF_MSG, NULL);
130		break;
131	    case COMMENT:
132		ptr->dri_comment = xf86addComment(ptr->dri_comment, val.str);
133		break;
134	    default:
135		Error (INVALID_KEYWORD_MSG, xf86tokenString ());
136		break;
137	    }
138    }
139
140#ifdef DEBUG
141    ErrorF("DRI section parsed\n");
142#endif
143
144    return ptr;
145}
146
147#undef CLEANUP
148
149void
150xf86printDRISection (FILE * cf, XF86ConfDRIPtr ptr)
151{
152    XF86ConfBuffersPtr bufs;
153
154    if (ptr == NULL)
155	return;
156
157    fprintf (cf, "Section \"DRI\"\n");
158    if (ptr->dri_comment)
159	fprintf (cf, "%s", ptr->dri_comment);
160    if (ptr->dri_group_name)
161	fprintf (cf, "\tGroup        \"%s\"\n", ptr->dri_group_name);
162    else if (ptr->dri_group >= 0)
163	fprintf (cf, "\tGroup        %d\n", ptr->dri_group);
164    if (ptr->dri_mode)
165	fprintf (cf, "\tMode         0%o\n", ptr->dri_mode);
166    for (bufs = ptr->dri_buffers_lst; bufs; bufs = bufs->list.next) {
167	fprintf (cf, "\tBuffers      %d %d",
168		 bufs->buf_count, bufs->buf_size);
169	if (bufs->buf_flags) fprintf (cf, " \"%s\"", bufs->buf_flags);
170	if (bufs->buf_comment)
171	    fprintf(cf, "%s", bufs->buf_comment);
172	else
173	    fprintf (cf, "\n");
174    }
175    fprintf (cf, "EndSection\n\n");
176}
177
178void
179xf86freeDRI (XF86ConfDRIPtr ptr)
180{
181    if (ptr == NULL)
182	return;
183
184    xf86freeBuffersList (ptr->dri_buffers_lst);
185    TestFree (ptr->dri_comment);
186    free (ptr);
187}
188