ioncore/reginfo.c

   1 /*
   2  * ion/ioncore/reginfo.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2009.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #include <string.h>
  10 #include <ctype.h>
  11
  12 #include "common.h"
  13 #include "region.h"
  14 #include <libtu/objp.h>
  15 #include "attach.h"
  16 #include "reginfo.h"
  17
  18
  19 static WRegClassInfo *reg_class_infos;
  20
  21
  22 /*{{{ Registration */
  23
  24
  25 bool ioncore_register_regclass(ClassDescr *descr, WRegionLoadCreateFn *lc_fn)
  26 {
  27     WRegClassInfo *info;
  28
  29     if(descr==NULL)
  30         return FALSE;
  31
  32     info=ALLOC(WRegClassInfo);
  33     if(info==NULL)
  34         return FALSE;
  35
  36     info->descr=descr;
  37     info->lc_fn=lc_fn;
  38     LINK_ITEM(reg_class_infos, info, next, prev);
  39
  40     return TRUE;
  41 }
  42
  43
  44 void ioncore_unregister_regclass(ClassDescr *descr)
  45 {
  46     WRegClassInfo *info;
  47
  48     for(info=reg_class_infos; info!=NULL; info=info->next){
  49         if(descr==info->descr){
  50             UNLINK_ITEM(reg_class_infos, info, next, prev);
  51             free(info);
  52             return;
  53         }
  54     }
  55 }
  56
  57
  58 /*}}}*/
  59
  60
  61 /*{{{ Lookup */
  62
  63
  64 WRegClassInfo *ioncore_lookup_regclass(const char *name, bool inheriting_ok)
  65 {
  66     WRegClassInfo *info;
  67     ClassDescr *descr;
  68
  69     if(name==NULL)
  70         return NULL;
  71
  72     for(info=reg_class_infos; info!=NULL; info=info->next){
  73         for(descr=info->descr;
  74             descr!=NULL;
  75             descr=(inheriting_ok ? descr->ancestor : NULL)){
  76
  77             if(strcmp(descr->name, name)==0){
  78                 if(info->lc_fn!=NULL)
  79                     return info;
  80             }
  81         }
  82     }
  83     return NULL;
  84 }
  85
  86
  87 /*}}}*/
  88
  89