types/string.c

   1 /*
   2  * string.c
   3  *
   4  * BabelTrace - String Type Converter
   5  *
   6  * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  */
  18
  19 #include <babeltrace/compiler.h>
  20 #include <babeltrace/align.h>
  21 #include <babeltrace/format.h>
  22
  23 void string_copy(struct stream_pos *dest, const struct format *fdest,
  24                  struct stream_pos *src, const struct format *fsrc,
  25                  const struct type_class *type_class)
  26 {
  27         struct type_class_string *string_class =
  28                 container_of(type_class, struct type_class_string, p);
  29
  30         if (fsrc->string_copy == fdest->string_copy) {
  31                 fsrc->string_copy(dest, src, string_class);
  32         } else {
  33                 char *tmp = NULL;
  34
  35                 fsrc->string_read(&tmp, src, string_class);
  36                 fdest->string_write(dest, tmp, string_class);
  37                 fsrc->string_free_temp(tmp);
  38         }
  39 }
  40
  41 void string_type_free(struct type_class_string *string_class)
  42 {
  43         g_free(string_class);
  44 }
  45
  46 static void _string_type_free(struct type_class *type_class)
  47 {
  48         struct type_class_string *string_class =
  49                 container_of(type_class, struct type_class_string, p);
  50         string_type_free(string_class);
  51 }
  52
  53 struct type_class_string *string_type_new(const char *name)
  54 {
  55         struct type_class_string *string_class;
  56         int ret;
  57
  58         string_class = g_new(struct type_class_string, 1);
  59         string_class->p.name = g_quark_from_string(name);
  60         string_class->p.alignment = CHAR_BIT;
  61         string_class->p.copy = string_copy;
  62         string_class->p.free = _string_type_free;
  63         string_class->p.ref = 1;
  64         if (string_class->p.name) {
  65                 ret = register_type(&string_class->p);
  66                 if (ret) {
  67                         g_free(string_class);
  68                         return NULL;
  69                 }
  70         }
  71         return string_class;
  72 }