src/python/database.c

   1 /*
   2         libloc - A library to determine the location of someone on the Internet
   3
   4         Copyright (C) 2017 IPFire Development Team <info@ipfire.org>
   5
   6         This library is free software; you can redistribute it and/or
   7         modify it under the terms of the GNU Lesser General Public
   8         License as published by the Free Software Foundation; either
   9         version 2.1 of the License, or (at your option) any later version.
  10
  11         This library is distributed in the hope that it will be useful,
  12         but WITHOUT ANY WARRANTY; without even the implied warranty of
  13         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14         Lesser General Public License for more details.
  15 */
  16
  17 #include <Python.h>
  18
  19 #include "../database.h"
  20 #include "database.h"
  21
  22 static PyObject* Database_new(PyTypeObject* type, PyObject* args, PyObject* kwds) {
  23         // Create libloc context
  24         struct loc_ctx* ctx;
  25         int r = loc_new(&ctx);
  26         if (r)
  27                 return NULL;
  28
  29         DatabaseObject* self = (DatabaseObject*)type->tp_alloc(type, 0);
  30         if (self) {
  31                 self->ctx = ctx;
  32         }
  33
  34         return (PyObject*)self;
  35 }
  36
  37 static void Database_dealloc(DatabaseObject* self) {
  38         if (self->db)
  39                 loc_database_unref(self->db);
  40
  41         if (self->ctx)
  42                 loc_unref(self->ctx);
  43
  44         Py_TYPE(self)->tp_free((PyObject* )self);
  45 }
  46
  47 static int Database_init(DatabaseObject* self, PyObject* args, PyObject* kwargs) {
  48         const char* path = NULL;
  49
  50         if (!PyArg_ParseTuple(args, "s", &path))
  51                 return -1;
  52
  53         // Open the file for reading
  54         FILE* f = fopen(path, "r");
  55         if (!f)
  56                 return -1;
  57
  58         // Load the database
  59         int r = loc_database_new(self->ctx, &self->db, f);
  60         fclose(f);
  61
  62         // Return on any errors
  63         if (r)
  64                 return -1;
  65
  66         return 0;
  67 }
  68
  69 static struct PyMethodDef Database_methods[] = {
  70         { NULL },
  71 };
  72
  73 PyTypeObject DatabaseType = {
  74         PyVarObject_HEAD_INIT(NULL, 0)
  75         tp_name:                "location.Database",
  76         tp_basicsize:           sizeof(DatabaseObject),
  77         tp_flags:               Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE,
  78         tp_new:                 Database_new,
  79         tp_dealloc:             (destructor)Database_dealloc,
  80         tp_init:                (initproc)Database_init,
  81         tp_doc:                 "Database object",
  82         tp_methods:             Database_methods,
  83 };