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|
#!/usr/bin/perl -w
$first = 0;
$last = 0;
$offset = 0;
$global_recsize = 0;
%indexfiles = (
"division.lkp" => "division.lkp",
"division" => "division.lkp",
"div" => "division.lkp",
"lkp" => "division.lkp",
"entrynam.idx" => "entrynam.idx",
"entrynam" => "entrynam.idx",
"ent" => "entrynam.idx",
"idx" => "entrynam.idx",
"acnum.hit" => "acnum.hit",
"hit" => "acnum.hit",
"acnum.trg" => "acnum.trg",
"trg" => "acnum.trg",
);
while (@ARGV and $ARGV[0] =~ /^-/) {
$arg = shift @ARGV;
last if ($arg =~ /^--$/);
if ($arg =~ /-first/) {
$first = shift @ARGV;
}
elsif ($arg =~ /-last/) {
$last = shift @ARGV;
}
elsif ($arg =~ /-off/) {
$offset = shift @ARGV;
}
else {
print STDERR "Unrecognized option '$arg'\n\n";
usage ();
}
}
if ($first < 0) {$first = 0}
if ($last < 0) {$last = 0}
if ($offset < 0) {$offset = 0}
if ($first && !$last) { $last = $first }
if ($#ARGV != 0) {
usage ();
}
$shortname = $ARGV[0];
if (!defined($indexfiles{$shortname})) {
print STDERR "Filename must be division.lkp, entryname.idx, acnum.trg or acnum.hit\n";
exit ();
}
$filename = $indexfiles{$shortname};
open (INFILE, "$filename") || die "Cannot open $filename";
$maxrecord = header (INFILE);
print "Maximum record: $maxrecord\n";
if (!$last) {$last = $maxrecord}
if ($first) {$begin = $first}
else {$begin = 1}
if ($last) {$end=$last}
else {$end = $maxrecord}
if ($offset) {
$x = ($offset - 300 + $global_recsize)/$global_recsize;
$recbuff = record (INFILE, $x);
if ($filename =~ /^div/o) { divreport($recbuff, $x) }
elsif ($filename =~ /^ent/o) { entreport($recbuff, $x) }
elsif ($filename =~ /^acnum\.hit/o) { hitreport($recbuff, $x) }
elsif ($filename =~ /^acnum\.trg/o) { trgreport($recbuff, $x) }
}
else {
for ($x=$begin;$x <= $end; $x++) {
$recbuff = record (INFILE, $x);
if ($filename =~ /^div/o) { divreport($recbuff, $x) }
elsif ($filename =~ /^ent/o) { entreport($recbuff, $x) }
elsif ($filename =~ /^acnum\.hit/o) { hitreport($recbuff, $x) }
elsif ($filename =~ /^acnum\.trg/o) { trgreport($recbuff, $x) }
}
}
close INFILE;
exit ();
sub usage () {
print STDERR "Usage:
dbitest.pl [-first num] [-last num] [-offset num] filename
Options:
-first first record to be reported (defaults to all)
-last last record to be reported (defaults to all, or first if specified)
-offset byte offset to report (obtained from a -debug report)
";
exit ();
}
sub header (*) {
my $file = shift @_;
my $buff;
my $fsize;
my $nrec;
my $recsize;
my $dbname;
my $release;
my $date;
my $padding;
read ($file, $buff, 300, 0) == 300 || die "Failed to read header";
($fsize, $nrec, $recsize, $dbname, $release, $date, $padding) =
unpack ("VVva20a10a4a256", $buff);
($a,$b,$c,$d) = unpack ("CCCC", $date);
printf "File size: %11d\n", $fsize;
printf "Record count: %8d\n", $nrec;
printf "Record size: %9d\n", $recsize;
printf "Database name: '%s'\n", $dbname;
printf "Release: '%s'\n", $release;
printf "Date string: '%s'\n", $date;
printf "Date: %x/%x/%x/%x\n", $a, $b, $c, $d;
# printf "Padding: '%s'\n", $padding;
undef $padding;
$global_recsize = $recsize;
return $nrec;
}
sub record (*$) {
my ($file,$rec) = @_;
my $buff;
my $recoffset = 300 + ($rec-1)*$global_recsize;
seek ($file, $recoffset, 0);
read ($file, $buff, $global_recsize) == $global_recsize
|| die "Failed to read $global_recsize bytes at $recoffset for record $rec";
return $buff;
}
sub divreport ($$) {
my ($buff, $nrecord) = @_;
my $namelen = $global_recsize - 2;
my $template = "va$namelen";
my ($num,$name) = unpack ($template, $buff);
printf "%8d: number: %d name '%s'\n", $nrecord, $num, $name;
return;
}
sub entreport ($$) {
my ($buff, $nrecord) = @_;
my $idlen = $global_recsize - 10;
$template = "a$idlen" . "VVv";
my ($id, $rpos, $spos,$num) = unpack ($template, $buff);
printf "%8d: rpos: %10d (%08x) spos: %10d (%08x) num: %8d name '%s'\n",
$nrecord, $rpos, $rpos, $spos, $spos, $num, $id;
return;
}
sub hitreport ($$) {
my ($buff, $nrecord) = @_;
my $idlen = $global_recsize - 4;
$template = "V";
my ($num) = unpack ($template, $buff);
printf "%8d: num: %8d \n",
$nrecord, $num;
return;
}
sub trgreport ($$) {
my ($buff, $nrecord) = @_;
my $idlen = $global_recsize - 8;
$template = "VVa$idlen";
my ($count, $start, $id) = unpack ($template, $buff);
printf "%8d: count: %6d start: %10d name '%s'\n",
$nrecord, $count, $start, $id;
return;
}
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