formats/ctf/types/string.c

   1 /*
   2  * Common Trace Format
   3  *
   4  * Strings read/write functions.
   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/ctf/types.h>
  20 #include <limits.h>             /* C99 limits */
  21 #include <string.h>
  22
  23 void ctf_string_copy(struct stream_pos *dest, struct stream_pos *src,
  24                      const struct type_class_string *string_class)
  25 {
  26         size_t len;
  27         unsigned char *destaddr, *srcaddr;
  28
  29         align_pos(src, string_class->p.alignment);
  30         srcaddr = get_pos_addr(src);
  31         len = strlen(srcaddr) + 1;
  32         if (dest->dummy)
  33                 goto end;
  34         align_pos(dest, string_class->p.alignment);
  35         destaddr = get_pos_addr(dest);
  36         strcpy(destaddr, srcaddr);
  37 end:
  38         move_pos(dest, len);
  39         move_pos(src, len);
  40 }
  41
  42 void ctf_string_read(unsigned char **dest, struct stream_pos *src,
  43                      const struct type_class_string *string_class)
  44 {
  45         size_t len;
  46         unsigned char *srcaddr;
  47
  48         align_pos(src, string_class->p.alignment);
  49         srcaddr = get_pos_addr(src);
  50         len = strlen(srcaddr) + 1;
  51         if (dest->dummy)
  52                 goto end;
  53         *dest = g_realloc(*dest, len);
  54         strcpy(dest, srcaddr);
  55 end:
  56         move_pos(src, len);
  57 }
  58
  59 void ctf_string_write(struct stream_pos *dest, const unsigned char *src,
  60                       const struct type_class_string *string_class)
  61 {
  62         size_t len;
  63         unsigned char *destaddr;
  64
  65         align_pos(dest, string_class->p.alignment);
  66         len = strlen(src) + 1;
  67         if (dest->dummy)
  68                 goto end;
  69         destaddr = get_pos_addr(dest);
  70         strcpy(destaddr, src);
  71 end:
  72         move_pos(dest, len);
  73 }
  74
  75 void ctf_string_free_temp(unsigned char *string)
  76 {
  77         g_free(string);
  78 }