src/db/db.c

   1 /*
   2  * Copyright (C) 2008 Liam Girdwood
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <gtk/gtk.h>
  23 #include "db.h"
  24 #include "star.h"
  25
  26 #define CAT_HOME        NOVA_CATALOG_DIR
  27
  28 struct table_desc {
  29         gchar *cat_name;
  30         gchar *class;
  31         gchar *num;
  32         gchar* table_name;
  33         struct astro_object *object;
  34         struct astrodb_db *cat;
  35         struct astrodb_table *table;
  36 };
  37
  38 struct astro_object star_table = {
  39         .type   =       "star",
  40         .init   =       star_object_init,
  41         .free   =       star_object_free,
  42         .render =       star_object_render,
  43 };
  44
  45 /* default datasets */
  46 static struct table_desc dlib[] = {
  47         {"Sky2000", "V", "109", "sky2kv4", &star_table},
  48 };
  49
  50 static struct table_desc olib[16];
  51
  52 static struct astrodb_library *nova_lib;
  53
  54 gint db_init(void)
  55 {
  56         gint i;
  57
  58         nova_lib = astrodb_open_library("ftp://cdsarc.u-strasbg.fr/pub/cats",
  59                 CAT_HOME);
  60         if (nova_lib == NULL)
  61                 g_critical("failed to open astro library at %s\n", CAT_HOME);
  62
  63         for (i = 0; i < astrodb_size(dlib); i++) {
  64
  65                 /* ra,dec,mag bounds are set here along with the 3D
  66                  * tile array size */
  67                 dlib[i].cat = astrodb_create_db(nova_lib, dlib[i].class,
  68                                                 dlib[i].num,
  69                                                 0.0, 360.0,
  70                                                 -90.0, 90.0,
  71                                                 18.0, -2.0, 0);
  72                 if (dlib[i].cat == NULL)
  73                         g_critical("failed to create db for class %s num %s\n",
  74                                 dlib[i].class, dlib[i].num);
  75
  76                 /* use the first dataset in this example */
  77                 dlib[i].table = astrodb_table_create(dlib[i].cat,
  78                                                         dlib[i].table_name,
  79                                                         ADB_MEM | ADB_FILE);
  80                 if (dlib[i].table == NULL)
  81                         g_critical("failed to create table %s\n",
  82                                 dlib[i].table_name);
  83
  84                 if (dlib[i].object->init)
  85                         dlib[i].object->init(dlib[i].table);
  86         }
  87         return 0;
  88 }
  89
  90 void db_release(void)
  91 {
  92         gint i;
  93
  94         for (i = 0; i < astrodb_size(dlib); i++) {
  95                 if (dlib[i].object->free)
  96                         dlib[i].object->free(dlib[i].table);
  97                 astrodb_db_free(dlib[i].cat);
  98         }
  99         astrodb_close_library(nova_lib);
 100 }
 101
 102 struct astrodb_table *db_get_table(gchar *name)
 103 {
 104         gint i;
 105
 106         for (i = 0; i < astrodb_size(olib); i++) {
 107                 if (!strncmp(name, olib[i].table_name, strlen(name)))
 108                         return olib[i].table;
 109         }
 110
 111         return NULL;
 112 }
 113
 114 struct astrodb_table *db_get_default_table(gchar *type)
 115 {
 116         gint i;
 117
 118         for (i = 0; i < astrodb_size(dlib); i++) {
 119                 if (!strncmp(type, dlib[i].object->type, strlen(type)))
 120                         return dlib[i].table;
 121         }
 122
 123         return NULL;
 124 }