formats/ctf/types/string.c

   1 /*
   2  * Common Trace Format
   3  *
   4  * Strings read/write functions.
   5  *
   6  * Copyright (c) 2010 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 #include <babeltrace/ctf/types.h>
  24 #include <limits.h>             /* C99 limits */
  25 #include <string.h>
  26
  27 void ctf_string_copy(struct stream_pos *dest, struct stream_pos *src,
  28                      const struct type_class_string *string_class)
  29 {
  30         size_t len;
  31         unsigned char *destaddr, *srcaddr;
  32
  33         align_pos(src, string_class->p.alignment);
  34         srcaddr = get_pos_addr(src);
  35         len = strlen(srcaddr) + 1;
  36         if (dest->dummy)
  37                 goto end;
  38         align_pos(dest, string_class->p.alignment);
  39         destaddr = get_pos_addr(dest);
  40         strcpy(destaddr, srcaddr);
  41 end:
  42         move_pos(dest, len);
  43         move_pos(src, len);
  44 }
  45
  46 void ctf_string_read(unsigned char **dest, struct stream_pos *src,
  47                      const struct type_class_string *string_class)
  48 {
  49         size_t len;
  50         unsigned char *srcaddr;
  51
  52         align_pos(src, string_class->p.alignment);
  53         srcaddr = get_pos_addr(src);
  54         len = strlen(srcaddr) + 1;
  55         if (dest->dummy)
  56                 goto end;
  57         *dest = g_realloc(*dest, len);
  58         strcpy(dest, srcaddr);
  59 end:
  60         move_pos(src, len);
  61 }
  62
  63 void ctf_string_write(struct stream_pos *dest, const unsigned char *src,
  64                       const struct type_class_string *string_class)
  65 {
  66         size_t len;
  67         unsigned char *destaddr;
  68
  69         align_pos(dest, string_class->p.alignment);
  70         len = strlen(src) + 1;
  71         if (dest->dummy)
  72                 goto end;
  73         destaddr = get_pos_addr(dest);
  74         strcpy(destaddr, src);
  75 end:
  76         move_pos(dest, len);
  77 }
  78
  79 void ctf_string_free_temp(unsigned char *string)
  80 {
  81         g_free(string);
  82 }