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Module.c

/* $XFree86: xc/programs/Xserver/hw/xfree86/parser/Module.c,v 1.12 2003/08/24 17:37:08 dawes Exp $ */
/* 
 * 
 * Copyright (c) 1997  Metro Link Incorporated
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 * 
 * Except as contained in this notice, the name of the Metro Link shall not be
 * used in advertising or otherwise to promote the sale, use or other dealings
 * in this Software without prior written authorization from Metro Link.
 * 
 */
/*
 * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of the copyright holder(s)
 * and author(s) shall not be used in advertising or otherwise to promote
 * the sale, use or other dealings in this Software without prior written
 * authorization from the copyright holder(s) and author(s).
 */


/* View/edit this file with tab stops set to 4 */

#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif

#include "xf86Parser.h"
#include "xf86tokens.h"
#include "Configint.h"

extern LexRec val;

static xf86ConfigSymTabRec SubModuleTab[] =
{
      {ENDSUBSECTION, "endsubsection"},
      {OPTION, "option"},
      {-1, ""},
};

static xf86ConfigSymTabRec ModuleTab[] =
{
      {ENDSECTION, "endsection"},
      {LOAD, "load"},
      {LOAD_DRIVER, "loaddriver"},
      {SUBSECTION, "subsection"},
      {-1, ""},
};

#define CLEANUP xf86freeModules

XF86LoadPtr
xf86parseModuleSubSection (XF86LoadPtr head, char *name)
{
      int token;
      parsePrologue (XF86LoadPtr, XF86LoadRec)

      ptr->load_name = name;
      ptr->load_type = XF86_LOAD_MODULE;
      ptr->load_opt  = NULL;
      ptr->list.next = NULL;

      while ((token = xf86getToken (SubModuleTab)) != ENDSUBSECTION)
      {
            switch (token)
            {
            case COMMENT:
                  ptr->load_comment = xf86addComment(ptr->load_comment, val.str);
                  break;
            case OPTION:
                  ptr->load_opt = xf86parseOption(ptr->load_opt);
                  break;
            case EOF_TOKEN:
                  xf86parseError (UNEXPECTED_EOF_MSG, NULL);
                  xf86conffree(ptr);
                  return NULL;
            default:
                  xf86parseError (INVALID_KEYWORD_MSG, xf86tokenString ());
                  xf86conffree(ptr);
                  return NULL;
                  break;
            }

      }

      return ((XF86LoadPtr) xf86addListItem ((glp) head, (glp) ptr));
}

XF86ConfModulePtr
xf86parseModuleSection (void)
{
      int token;
      parsePrologue (XF86ConfModulePtr, XF86ConfModuleRec)

      while ((token = xf86getToken (ModuleTab)) != ENDSECTION)
      {
            switch (token)
            {
            case COMMENT:
                  ptr->mod_comment = xf86addComment(ptr->mod_comment, val.str);
                  break;
            case LOAD:
                  if (xf86getSubToken (&(ptr->mod_comment)) != STRING)
                        Error (QUOTE_MSG, "Load");
                  ptr->mod_load_lst =
                        xf86addNewLoadDirective (ptr->mod_load_lst, val.str,
                                                       XF86_LOAD_MODULE, NULL);
                  break;
            case LOAD_DRIVER:
                  if (xf86getSubToken (&(ptr->mod_comment)) != STRING)
                        Error (QUOTE_MSG, "LoadDriver");
                  ptr->mod_load_lst =
                        xf86addNewLoadDirective (ptr->mod_load_lst, val.str,
                                                       XF86_LOAD_DRIVER, NULL);
                  break;
            case SUBSECTION:
                  if (xf86getSubToken (&(ptr->mod_comment)) != STRING)
                                    Error (QUOTE_MSG, "SubSection");
                  ptr->mod_load_lst =
                        xf86parseModuleSubSection (ptr->mod_load_lst, val.str);
                  break;
            case EOF_TOKEN:
                  Error (UNEXPECTED_EOF_MSG, NULL);
                  break;
            default:
                  Error (INVALID_KEYWORD_MSG, xf86tokenString ());
                  break;
            }
      }

#ifdef DEBUG
      printf ("Module section parsed\n");
#endif

      return ptr;
}

#undef CLEANUP

void
xf86printModuleSection (FILE * cf, XF86ConfModulePtr ptr)
{
      XF86LoadPtr lptr;

      if (ptr == NULL)
            return;

      if (ptr->mod_comment)
            fprintf(cf, "%s", ptr->mod_comment);
      for (lptr = ptr->mod_load_lst; lptr; lptr = lptr->list.next)
      {
            switch (lptr->load_type)
            {
            case XF86_LOAD_MODULE:
                  if( lptr->load_opt == NULL ) {
                        fprintf (cf, "\tLoad  \"%s\"", lptr->load_name);
                        if (lptr->load_comment)
                              fprintf(cf, "%s", lptr->load_comment);
                        else
                              fputc('\n', cf);
                  }
                  else
                  {
                        fprintf (cf, "\tSubSection \"%s\"\n", lptr->load_name);
                        if (lptr->load_comment)
                              fprintf(cf, "%s", lptr->load_comment);
                        xf86printOptionList(cf, lptr->load_opt, 2);
                        fprintf (cf, "\tEndSubSection\n");
                  }
                  break;
            case XF86_LOAD_DRIVER:
                  fprintf (cf, "\tLoadDriver  \"%s\"", lptr->load_name);
                        if (lptr->load_comment)
                              fprintf(cf, "%s", lptr->load_comment);
                        else
                              fputc('\n', cf);
                  break;
#if 0
            default:
                  fprintf (cf, "#\tUnknown type  \"%s\"\n", lptr->load_name);
                  break;
#endif
            }
      }
}

XF86LoadPtr
xf86addNewLoadDirective (XF86LoadPtr head, char *name, int type, XF86OptionPtr opts)
{
      XF86LoadPtr new;
      int token;

      new = xf86confcalloc (1, sizeof (XF86LoadRec));
      new->load_name = name;
      new->load_type = type;
      new->load_opt  = opts;
      new->list.next = NULL;

      if ((token = xf86getToken(NULL)) == COMMENT)
            new->load_comment = xf86addComment(new->load_comment, val.str);
      else
            xf86unGetToken(token);

      return ((XF86LoadPtr) xf86addListItem ((glp) head, (glp) new));
}

XF86LoadPtr
xf86RemoveLoadDirective(XF86LoadPtr head, XF86LoadPtr load)
{
    XF86LoadPtr prev = NULL;
    XF86LoadPtr l = head;

    while (l) {
        if (l == load) {
            if (prev) ((glp)prev)->next = ((glp)load)->next;
            if (head == load) head = (XF86LoadPtr)((glp)load)->next;
            TestFree(load->load_name);
            TestFree(load->load_comment);
            xf86optionListFree(load->load_opt);
            free(load);
            break;
        }
        
        prev = l;
        l = (XF86LoadPtr)((glp)l)->next;
    }

    return head;
}
void
xf86freeModules (XF86ConfModulePtr ptr)
{
      XF86LoadPtr lptr;
      XF86LoadPtr prev;

      if (ptr == NULL)
            return;
      lptr = ptr->mod_load_lst;
      while (lptr)
      {
            TestFree (lptr->load_name);
            TestFree (lptr->load_comment);
            prev = lptr;
            lptr = lptr->list.next;
            xf86conffree (prev);
      }
      TestFree (ptr->mod_comment);
      xf86conffree (ptr);
}

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