formats/ctf-text/types/integer.c

   1 /*
   2  * Common Trace Format
   3  *
   4  * Integers 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-text/types.h>
  20 #include <stdio.h>
  21 #include <inttypes.h>
  22 #include <stdint.h>
  23
  24 int ctf_text_integer_write(struct stream_pos *ppos, struct definition *definition)
  25 {
  26         struct definition_integer *integer_definition =
  27                 container_of(definition, struct definition_integer, p);
  28         const struct declaration_integer *integer_declaration =
  29                 integer_definition->declaration;
  30         struct ctf_text_stream_pos *pos = ctf_text_pos(ppos);
  31
  32         if (pos->dummy)
  33                 return 0;
  34
  35         if (pos->field_nr++ != 0)
  36                 fprintf(pos->fp, ",");
  37         fprintf(pos->fp, " ");
  38         if (pos->print_names)
  39                 fprintf(pos->fp, "%s = ",
  40                         g_quark_to_string(definition->name));
  41
  42         switch (integer_declaration->base) {
  43         case 2:
  44         {
  45                 int bitnr;
  46                 uint64_t v = integer_definition->value._unsigned;
  47
  48                 fprintf(pos->fp, "b");
  49                 for (bitnr = 0; bitnr < integer_declaration->len; bitnr++)
  50                         v <<= 1;
  51                 for (; bitnr < sizeof(v) * CHAR_BIT; bitnr++) {
  52                         fprintf(pos->fp, "%u", ((v & 1ULL) << 63) ? 1 : 0);
  53                         v <<= 1;
  54                 }
  55                 break;
  56         }
  57         case 8:
  58                 fprintf(pos->fp, "0%" PRIo64,
  59                         integer_definition->value._unsigned);
  60                 break;
  61         case 10:
  62                 if (!integer_declaration->signedness) {
  63                         fprintf(pos->fp, "%" PRIu64,
  64                                 integer_definition->value._unsigned);
  65                 } else {
  66                         fprintf(pos->fp, "%" PRId64,
  67                                 integer_definition->value._signed);
  68                 }
  69                 break;
  70         case 16:
  71                 fprintf(pos->fp, "0x%" PRIX64,
  72                         integer_definition->value._unsigned);
  73                 break;
  74         default:
  75                 return -EINVAL;
  76         }
  77
  78         return 0;
  79 }