xorg-server-1.4/hw/xfree86/parser/DRI.c

   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
  38 extern LexRec val;
  39
  40 static xf86ConfigSymTabRec DRITab[] =
  41 {
  42     {ENDSECTION, "endsection"},
  43     {GROUP,      "group"},
  44     {BUFFERS,    "buffers"},
  45     {MODE,       "mode"},
  46     {-1,         ""},
  47 };
  48
  49 #define CLEANUP xf86freeBuffersList
  50
  51 static void
  52 xf86freeBuffersList (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         xf86conffree (prev);
  62     }
  63 }
  64
  65 static XF86ConfBuffersPtr
  66 xf86parseBuffers (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
  98 XF86ConfDRIPtr
  99 xf86parseDRISection (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                 ptr->dri_mode = val.num;
 121                 break;
 122             case BUFFERS:
 123                 HANDLE_LIST (dri_buffers_lst, xf86parseBuffers,
 124                              XF86ConfBuffersPtr);
 125                 break;
 126             case EOF_TOKEN:
 127                 Error (UNEXPECTED_EOF_MSG, NULL);
 128                 break;
 129             case COMMENT:
 130                 ptr->dri_comment = xf86addComment(ptr->dri_comment, val.str);
 131                 break;
 132             default:
 133                 Error (INVALID_KEYWORD_MSG, xf86tokenString ());
 134                 break;
 135             }
 136     }
 137
 138 #ifdef DEBUG
 139     ErrorF("DRI section parsed\n");
 140 #endif
 141
 142     return ptr;
 143 }
 144
 145 #undef CLEANUP
 146
 147 void
 148 xf86printDRISection (FILE * cf, XF86ConfDRIPtr ptr)
 149 {
 150     XF86ConfBuffersPtr bufs;
 151
 152     if (ptr == NULL)
 153         return;
 154
 155     fprintf (cf, "Section \"DRI\"\n");
 156     if (ptr->dri_comment)
 157         fprintf (cf, "%s", ptr->dri_comment);
 158     if (ptr->dri_group_name)
 159         fprintf (cf, "\tGroup        \"%s\"\n", ptr->dri_group_name);
 160     else if (ptr->dri_group >= 0)
 161         fprintf (cf, "\tGroup        %d\n", ptr->dri_group);
 162     if (ptr->dri_mode)
 163         fprintf (cf, "\tMode         0%o\n", ptr->dri_mode);
 164     for (bufs = ptr->dri_buffers_lst; bufs; bufs = bufs->list.next) {
 165         fprintf (cf, "\tBuffers      %d %d",
 166                  bufs->buf_count, bufs->buf_size);
 167         if (bufs->buf_flags) fprintf (cf, " \"%s\"", bufs->buf_flags);
 168         if (bufs->buf_comment)
 169             fprintf(cf, "%s", bufs->buf_comment);
 170         else
 171             fprintf (cf, "\n");
 172     }
 173     fprintf (cf, "EndSection\n\n");
 174 }
 175
 176 void
 177 xf86freeDRI (XF86ConfDRIPtr ptr)
 178 {
 179     if (ptr == NULL)
 180         return;
 181
 182     xf86freeBuffersList (ptr->dri_buffers_lst);
 183     TestFree (ptr->dri_comment);
 184     xf86conffree (ptr);
 185 }