types/integer.c

   1 /*
   2  * BabelTrace - Integer Type Converter
   3  *
   4  * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   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  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <babeltrace/compiler.h>
  22 #include <stdint.h>
  23
  24 size_t copy_integer(unsigned char *dest, const struct format *fdest,
  25                     const unsigned char *src, const struct format *fsrc,
  26                     const struct type_class *type_class)
  27 {
  28         struct type_class_integer *int_class =
  29                 container_of(type_class, struct type_class_integer, p);
  30
  31         if (!int_class->signedness) {
  32                 uint64_t v;
  33
  34                 v = fsrc->uint_read(src, int_class->byte_order, int_class->len);
  35                 return fdest->uint_write(dest, int_class->byte_order,
  36                                          int_class->len, v);
  37         } else {
  38                 int64_t v;
  39
  40                 v = fsrc->int_read(src, int_class->byte_order, int_class->len);
  41                 return fdest->int_write(dest, int_class->byte_order,
  42                                         int_class->len, v);
  43         }
  44 }