aboutsummaryrefslogtreecommitdiff
path: root/src/debug.c
blob: b114c322699d463b4abad448de1f9e3595286301 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/* This file is part of GDBM, the GNU data base manager.
   Copyright 2016-2023 Free Software Foundation, Inc.

   GDBM is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   GDBM is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GDBM. If not, see <http://www.gnu.org/licenses/>.   */

#include "autoconf.h"
#include "gdbmdefs.h"
#include <ctype.h>

gdbm_debug_printer_t gdbm_debug_printer;
int gdbm_debug_flags;

struct gdbm_debug_token_desc
{
  char const *name;
  int flag;
};

struct gdbm_debug_token_desc const gdbm_debug_token_tab[] = {
  { "err",    GDBM_DEBUG_ERR },
  { "open",   GDBM_DEBUG_OPEN },
  { "store",  GDBM_DEBUG_STORE },
  { "read",   GDBM_DEBUG_READ },
  { "lookup", GDBM_DEBUG_LOOKUP },
  { "all",    GDBM_DEBUG_ALL },
  { NULL, 0 }
};

int
gdbm_debug_token (char const *tok)
{
  int i;

  for (i = 0; gdbm_debug_token_tab[i].name; i++)
    if (strcmp (gdbm_debug_token_tab[i].name, tok) == 0)
      return gdbm_debug_token_tab[i].flag;

  return 0;
}

void
gdbm_debug_parse_state (int (*f) (void *, int, char const *), void *d)
{
  int i;
  
  for (i = 0; gdbm_debug_token_tab[i].name; i++)
    {
      if (gdbm_debug_token_tab[i].flag == GDBM_DEBUG_ALL)
	continue;
      if (gdbm_debug_flags & gdbm_debug_token_tab[i].flag)
	{
	  if (f (d, gdbm_debug_token_tab[i].flag, gdbm_debug_token_tab[i].name))
	    break;
	}
    }
}

#define DATBUFSIZE 69

static int
datbuf_format (char vbuf[DATBUFSIZE], const char *buf, size_t size)
{
  char *p = vbuf;
  char *q = vbuf + 51;
  int i;
  size_t j = 0;
  static char hexchar[] = "0123456789ABCDEF";
  
  for (i = 0; i < 16; i++)
    {
      unsigned c;
      if (j < size)
	{
	  c = *(const unsigned char*)buf++;
	  j++;

	  *p++ = hexchar[c >> 4];
	  *p++ = hexchar[c & 0xf];
	  *p++ = ' ';
	  
	  *q++ = isprint (c) ? c : '.';
	  if (i == 7)
	    {
	      *p++ = ' ';
	      *q++ = ' ';
	    }
	}
      else
	{
	  *p++ = ' ';
	  *p++ = ' ';
	  *p++ = ' ';
	  *q++ = ' ';
	}
    }
  *p++ = ' ';
  *p = ' ';
  *q = 0;
  return j;
}

void
gdbm_debug_datum (datum dat, char const *pfx)
{
  char const *buf = dat.dptr;
  size_t size = dat.dsize;
  unsigned off;
  char vbuf[DATBUFSIZE];

  if (!buf)
    {
      gdbm_debug_printer ("%s%s\n", pfx, "NULL");
      return;
    }

  gdbm_debug_printer ("size=%d\n", size);
  off = 0;
  while (size)
    {
      size_t rd = datbuf_format (vbuf, buf, size);
      gdbm_debug_printer ("%s%04x:  %s\n", pfx, off, vbuf);
      size -= rd;
      buf += rd;
      off += rd;
    }
}

Return to:

Send suggestions and report system problems to the System administrator.