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/*
* This file is part of the sn package.
* Distribution of sn is covered by the GNU GPL. See file COPYING.
* Copyright 1998-2000 Harold Tay.
* Copyright 2000- Patrik Rdman.
*/
/*
* Dump database.
*/
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include "config.h"
#include "allocate.h"
#include "newsgroup.h"
#include "dhash.h"
#include "parameters.h"
#include <format.h>
#include <out.h>
#include <opt.h>
static const char rcsid[] = "$Id$";
int debug = 0;
int outfd = 1;
int dh_dump (int next)
{
int i;
int nr = 0;
unsigned index;
struct chain *chp;
int empties = 0;
int total = 0;
int maxlen = 0;
int bytes = 0;
for (i = 0; i < DH_SIZE; i++)
{
unsigned char *x = dh_table->next + i * 3;
index = char3toint(x);
if (!index)
empties++;
else
{
int len = 0;
for (; index; index = chp->next)
{
char *group;
int ident;
chp = allo_deref(index);
if (NULL == chp)
{
LOG("dh_dump:allo_deref returned bad ref");
return (0 - nr);
}
ident = char2toint(chp->newsgroup);
group = ng_newsgroup(ident);
if (NULL == group)
{
LOG("dh_dump:bad newsgroup for ident %d", ident);
return (0 - nr);
}
if (!next)
writef(outfd, "%s %d <%s>\n", group, chp->serial, chp->messageid);
else
writef(outfd, "[%d,%d]%s %d <%s>\n",
index, chp->next, group, chp->serial, chp->messageid);
nr++;
len++;
bytes += strlen(chp->messageid);
}
total += len;
if (len > maxlen)
maxlen = len;
}
}
log("%d chains of %d empty", empties, DH_SIZE);
log("Total %d entries", total);
if (empties < DH_SIZE)
log("for average chain length of %d/100", (total * 100) / (DH_SIZE - empties));
log("with max chain length of %d", maxlen);
if (total)
log("Average length of ID is %d/100", (bytes * 100) / total);
return (nr);
}
#define usage() fail(1, "Usage: %s [-i] [-o file]", progname)
int main (int argc, char **argv)
{
int nr;
char *cp;
int withnext = 0;
int i;
progname = ((cp = strrchr(argv[0], '/')) ? cp + 1 : argv[0]);
parameters(0);
if (-1 == chdir(snroot))
FAIL(2, "chdir(%s):%m", snroot);
while ((i = opt_get(argc, argv, "o")) > -1)
switch (i)
{
case 'P': log_with_pid(); break;
case 'd': debug++; break;
case 'V': version(); _exit(0);
case 'i': withnext = 1; break;
case 'o':
if (!opt_arg)
usage();
outfd = open(opt_arg, O_WRONLY | O_CREAT, 0644);
if (-1 == outfd)
fail(2, "open(%s):%m", opt_arg);
break;
default: usage();
}
if (opt_ind < argc)
usage();
if (-1 == dh_open(0, 1))
_exit(2);
nr = dh_dump(withnext);
if (nr < 0)
{
LOG("Error (%m?) while reading record number %d", 0 - nr);
dh_close();
_exit(2);
}
dh_close();
_exit(0);
}
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