158 |
# read the $db.FDT file for tags |
# read the $db.FDT file for tags |
159 |
my $fieldzone=0; |
my $fieldzone=0; |
160 |
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161 |
open(fileFDT, $self->{fdt_file}) || croak "can't read '$self->{fdt_file}': $!"; |
open(my $fileFDT, $self->{fdt_file}) || croak "can't read '$self->{fdt_file}': $!"; |
162 |
|
binmode($fileFDT); |
163 |
|
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164 |
while (<fileFDT>) { |
while (<$fileFDT>) { |
165 |
chomp; |
chomp; |
166 |
if ($fieldzone) { |
if ($fieldzone) { |
167 |
my $name=substr($_,0,30); |
my $name=substr($_,0,30); |
178 |
} |
} |
179 |
} |
} |
180 |
|
|
181 |
close(fileFDT); |
close($fileFDT); |
182 |
} |
} |
183 |
|
|
184 |
# Get the Maximum MFN from $db.MST |
# Get the Maximum MFN from $db.MST |
185 |
|
|
186 |
open($self->{'fileMST'}, $self->{mst_file}) || croak "can't open '$self->{mst_file}': $!"; |
open($self->{'fileMST'}, $self->{mst_file}) || croak "can't open '$self->{mst_file}': $!"; |
187 |
|
binmode($self->{'fileMST'}); |
188 |
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|
189 |
# MST format: (* = 32 bit signed) |
# MST format: (* = 32 bit signed) |
190 |
# CTLMFN* always 0 |
# CTLMFN* always 0 |
192 |
# NXTMFB* last block allocated to master file |
# NXTMFB* last block allocated to master file |
193 |
# NXTMFP offset to next available position in last block |
# NXTMFP offset to next available position in last block |
194 |
# MFTYPE always 0 for user db file (1 for system) |
# MFTYPE always 0 for user db file (1 for system) |
195 |
seek($self->{'fileMST'},4,0); |
seek($self->{'fileMST'},4,0) || carp "can't seek to offset 0 in MST: $!"; |
196 |
|
|
197 |
my $buff; |
my $buff; |
198 |
|
|
199 |
read($self->{'fileMST'}, $buff, 4); |
read($self->{'fileMST'}, $buff, 4) || carp "can't read NXTMFN from MST: $!"; |
200 |
$self->{'NXTMFN'}=unpack("l",$buff) || carp "NXTNFN is zero"; |
$self->{'NXTMFN'}=unpack("V",$buff) || carp "NXTNFN is zero"; |
|
|
|
|
|
|
|
|
|
201 |
|
|
202 |
print STDERR Dumper($self),"\n" if ($self->{debug}); |
print STDERR Dumper($self),"\n" if ($self->{debug}); |
203 |
|
|
204 |
# open files for later |
# open files for later |
205 |
open($self->{'fileXRF'}, $self->{xrf_file}) || croak "can't open '$self->{xrf_file}': $!"; |
open($self->{'fileXRF'}, $self->{xrf_file}) || croak "can't open '$self->{xrf_file}': $!"; |
206 |
|
binmode($self->{'fileXRF'}); |
207 |
|
|
208 |
$self ? return $self : return undef; |
$self ? return $self : return undef; |
209 |
} |
} |
240 |
|
|
241 |
# Get the index information from $db.CNT |
# Get the index information from $db.CNT |
242 |
|
|
243 |
open(fileCNT, $self->{cnt_file}) || croak "can't read '$self->{cnt_file}': $!"; |
open(my $fileCNT, $self->{cnt_file}) || carp "can't read '$self->{cnt_file}': $!"; |
244 |
|
binmode($fileCNT); |
245 |
|
|
246 |
my $buff; |
my $buff; |
247 |
|
|
248 |
read(fileCNT, $buff, 26); |
read($fileCNT, $buff, 26) || carp "can't read first table from CNT: $!"; |
249 |
$self->unpack_cnt($buff); |
$self->unpack_cnt($buff); |
250 |
|
|
251 |
read(fileCNT, $buff, 26); |
read($fileCNT, $buff, 26) || carp "can't read second table from CNT: $!"; |
252 |
$self->unpack_cnt($buff); |
$self->unpack_cnt($buff); |
253 |
|
|
254 |
close(fileCNT); |
close($fileCNT); |
255 |
|
|
256 |
return $self->{cnt}; |
return $self->{cnt}; |
257 |
} |
} |
285 |
my @flds = qw(ORDN ORDF N K LIV POSRX NMAXPOS FMAXPOS ABNORMAL); |
my @flds = qw(ORDN ORDF N K LIV POSRX NMAXPOS FMAXPOS ABNORMAL); |
286 |
|
|
287 |
my $buff = shift || return; |
my $buff = shift || return; |
288 |
my @arr = unpack("ssssssllls", $buff); |
my @arr = unpack("vvvvvvVVVv", $buff); |
289 |
|
|
290 |
print STDERR "unpack_cnt: ",join(" ",@arr),"\n" if ($self->{'debug'}); |
print STDERR "unpack_cnt: ",join(" ",@arr),"\n" if ($self->{'debug'}); |
291 |
|
|
335 |
|
|
336 |
# read XRFMFB abd XRFMFP |
# read XRFMFB abd XRFMFP |
337 |
read($self->{'fileXRF'}, $buff, 4); |
read($self->{'fileXRF'}, $buff, 4); |
338 |
my $pointer=unpack("l",$buff) || carp "pointer is null"; |
my $pointer=unpack("V",$buff) || carp "pointer is null"; |
339 |
|
|
340 |
# check for logically deleted record |
# check for logically deleted record |
341 |
if ($pointer < 0) { |
if ($pointer & 0x80000000) { |
342 |
print STDERR "## record $mfn is logically deleted\n" if ($self->{debug}); |
print STDERR "## record $mfn is logically deleted\n" if ($self->{debug}); |
343 |
$self->{deleted} = $mfn; |
$self->{deleted} = $mfn; |
344 |
|
|
345 |
return unless $self->{include_deleted}; |
return unless $self->{include_deleted}; |
346 |
|
|
347 |
$pointer = abs($pointer); |
# abs |
348 |
|
$pointer = ($pointer ^ 0xffffffff) + 1; |
349 |
} |
} |
350 |
|
|
351 |
my $XRFMFB = int($pointer/2048); |
my $XRFMFB = int($pointer/2048); |
360 |
|
|
361 |
# Get Record Information |
# Get Record Information |
362 |
|
|
363 |
seek($self->{'fileMST'},$blk_off,0); |
seek($self->{'fileMST'},$blk_off,0) || croak "can't seek to $blk_off: $!"; |
364 |
|
|
365 |
read($self->{'fileMST'}, $buff, 4); |
read($self->{'fileMST'}, $buff, 4) || croak "can't read 4 bytes at offset $blk_off from MST file: $!"; |
366 |
my $value=unpack("l",$buff); |
my $value=unpack("V",$buff); |
367 |
|
|
368 |
print STDERR "## offset for rowid $value is $blk_off (blk $XRFMFB off $XRFMFP)\n" if ($self->{debug}); |
print STDERR "## offset for rowid $value is $blk_off (blk $XRFMFB off $XRFMFP)\n" if ($self->{debug}); |
369 |
|
|
380 |
|
|
381 |
read($self->{'fileMST'}, $buff, 14); |
read($self->{'fileMST'}, $buff, 14); |
382 |
|
|
383 |
my ($MFRL,$MFBWB,$MFBWP,$BASE,$NVF,$STATUS) = unpack("slssss", $buff); |
my ($MFRL,$MFBWB,$MFBWP,$BASE,$NVF,$STATUS) = unpack("vVvvvv", $buff); |
384 |
|
|
385 |
print STDERR "## MFRL: $MFRL MFBWB: $MFBWB MFBWP: $MFBWP BASE: $BASE NVF: $NVF STATUS: $STATUS\n" if ($self->{debug}); |
print STDERR "## MFRL: $MFRL MFBWB: $MFBWB MFBWP: $MFBWP BASE: $BASE NVF: $NVF STATUS: $STATUS\n" if ($self->{debug}); |
386 |
|
|
400 |
|
|
401 |
for (my $i = 0 ; $i < $NVF ; $i++) { |
for (my $i = 0 ; $i < $NVF ; $i++) { |
402 |
|
|
403 |
my ($TAG,$POS,$LEN) = unpack("sss", substr($buff,$i * 6, 6)); |
my ($TAG,$POS,$LEN) = unpack("vvv", substr($buff,$i * 6, 6)); |
404 |
|
|
405 |
print STDERR "## TAG: $TAG POS: $POS LEN: $LEN\n" if ($self->{debug}); |
print STDERR "## TAG: $TAG POS: $POS LEN: $LEN\n" if ($self->{debug}); |
406 |
|
|