Commit | Line | Data |
1a6a8453 |
1 | |
2 | package IO::Compress::Base ; |
3 | |
4 | require 5.004 ; |
5 | |
6 | use strict ; |
7 | use warnings; |
8 | |
9 | use Compress::Zlib::Common; |
10 | use Compress::Zlib::ParseParameters; |
11 | |
12 | use IO::File ; |
13 | use Scalar::Util qw(blessed readonly); |
14 | |
15 | #use File::Glob; |
16 | #require Exporter ; |
17 | use Carp ; |
18 | use Symbol; |
19 | use bytes; |
20 | |
21 | our (@ISA, $VERSION, $got_encode); |
22 | @ISA = qw(Exporter IO::File); |
23 | |
24 | $VERSION = '2.000_05'; |
25 | |
26 | #Can't locate object method "SWASHNEW" via package "utf8" (perhaps you forgot to load "utf8"?) at .../ext/Compress-Zlib/Gzip/blib/lib/Compress/Zlib/Common.pm line 16. |
27 | |
28 | #$got_encode = 0; |
29 | #eval |
30 | #{ |
31 | # require Encode; |
32 | # Encode->import('encode', 'find_encoding'); |
33 | #}; |
34 | # |
35 | #$got_encode = 1 unless $@; |
36 | |
37 | sub saveStatus |
38 | { |
39 | my $self = shift ; |
40 | ${ *$self->{ErrorNo} } = shift() + 0 ; |
41 | ${ *$self->{Error} } = '' ; |
42 | |
43 | return ${ *$self->{ErrorNo} } ; |
44 | } |
45 | |
46 | |
47 | sub saveErrorString |
48 | { |
49 | my $self = shift ; |
50 | my $retval = shift ; |
51 | ${ *$self->{Error} } = shift ; |
52 | ${ *$self->{ErrorNo} } = shift() + 0 if @_ ; |
53 | |
54 | return $retval; |
55 | } |
56 | |
57 | sub croakError |
58 | { |
59 | my $self = shift ; |
60 | $self->saveErrorString(0, $_[0]); |
61 | croak $_[0]; |
62 | } |
63 | |
64 | sub closeError |
65 | { |
66 | my $self = shift ; |
67 | my $retval = shift ; |
68 | |
69 | my $errno = *$self->{ErrorNo}; |
70 | my $error = ${ *$self->{Error} }; |
71 | |
72 | $self->close(); |
73 | |
74 | *$self->{ErrorNo} = $errno ; |
75 | ${ *$self->{Error} } = $error ; |
76 | |
77 | return $retval; |
78 | } |
79 | |
80 | |
81 | |
82 | sub error |
83 | { |
84 | my $self = shift ; |
85 | return ${ *$self->{Error} } ; |
86 | } |
87 | |
88 | sub errorNo |
89 | { |
90 | my $self = shift ; |
91 | return ${ *$self->{ErrorNo} } ; |
92 | } |
93 | |
94 | |
95 | sub writeAt |
96 | { |
97 | my $self = shift ; |
98 | my $offset = shift; |
99 | my $data = shift; |
100 | |
101 | if (defined *$self->{FH}) { |
102 | my $here = tell(*$self->{FH}); |
103 | return $self->saveErrorString(undef, "Cannot seek to end of output filehandle: $!", $!) |
104 | if $here < 0 ; |
105 | seek(*$self->{FH}, $offset, SEEK_SET) |
106 | or return $self->saveErrorString(undef, "Cannot seek to end of output filehandle: $!", $!) ; |
107 | defined *$self->{FH}->write($data, length $data) |
108 | or return $self->saveErrorString(undef, $!, $!) ; |
109 | seek(*$self->{FH}, $here, SEEK_SET) |
110 | or return $self->saveErrorString(undef, "Cannot seek to end of output filehandle: $!", $!) ; |
111 | } |
112 | else { |
113 | substr(${ *$self->{Buffer} }, $offset, length($data)) = $data ; |
114 | } |
115 | |
116 | return 1; |
117 | } |
118 | |
119 | sub getOneShotParams |
120 | { |
121 | return ( 'MultiStream' => [1, 1, Parse_boolean, 1], |
122 | ); |
123 | } |
124 | |
125 | sub checkParams |
126 | { |
127 | my $self = shift ; |
128 | my $class = shift ; |
129 | |
130 | my $got = shift || Compress::Zlib::ParseParameters::new(); |
131 | |
132 | $got->parse( |
133 | { |
134 | # Generic Parameters |
135 | 'AutoClose' => [1, 1, Parse_boolean, 0], |
136 | #'Encoding' => [1, 1, Parse_any, undef], |
137 | 'Strict' => [0, 1, Parse_boolean, 1], |
138 | 'Append' => [1, 1, Parse_boolean, 0], |
139 | 'BinModeIn' => [1, 1, Parse_boolean, 0], |
140 | |
141 | $self->getExtraParams(), |
142 | *$self->{OneShot} ? $self->getOneShotParams() |
143 | : (), |
144 | }, |
145 | @_) or $self->croakError("${class}: $got->{Error}") ; |
146 | |
147 | return $got ; |
148 | } |
149 | |
150 | sub _create |
151 | { |
152 | my $obj = shift; |
153 | my $got = shift; |
154 | |
155 | *$obj->{Closed} = 1 ; |
156 | |
157 | my $class = ref $obj; |
158 | $obj->croakError("$class: Missing Output parameter") |
159 | if ! @_ && ! $got ; |
160 | |
161 | my $outValue = shift ; |
162 | my $oneShot = 1 ; |
163 | |
164 | if (! $got) |
165 | { |
166 | $oneShot = 0 ; |
167 | $got = $obj->checkParams($class, undef, @_) |
168 | or return undef ; |
169 | } |
170 | |
171 | my $lax = ! $got->value('Strict') ; |
172 | |
173 | my $outType = whatIsOutput($outValue); |
174 | |
175 | $obj->ckOutputParam($class, $outValue) |
176 | or return undef ; |
177 | |
178 | if ($outType eq 'buffer') { |
179 | *$obj->{Buffer} = $outValue; |
180 | } |
181 | else { |
182 | my $buff = "" ; |
183 | *$obj->{Buffer} = \$buff ; |
184 | } |
185 | |
186 | # Merge implies Append |
187 | my $merge = $got->value('Merge') ; |
188 | my $appendOutput = $got->value('Append') || $merge ; |
189 | |
190 | if ($merge) |
191 | { |
192 | # Switch off Merge mode if output file/buffer is empty/doesn't exist |
193 | if (($outType eq 'buffer' && length $$outValue == 0 ) || |
194 | ($outType ne 'buffer' && (! -e $outValue || (-w _ && -z _))) ) |
195 | { $merge = 0 } |
196 | } |
197 | |
198 | # If output is a file, check that it is writable |
199 | if ($outType eq 'filename' && -e $outValue && ! -w _) |
200 | { return $obj->saveErrorString(undef, "Output file '$outValue' is not writable" ) } |
201 | |
202 | elsif ($outType eq 'handle' && ! -w $outValue) |
203 | { return $obj->saveErrorString(undef, "Output filehandle is not writable" ) } |
204 | |
205 | |
206 | # TODO - encoding |
207 | # if ($got->parsed('Encoding')) { |
208 | # $obj->croakError("$class: Encode module needed to use -Encoding") |
209 | # if ! $got_encode; |
210 | # |
211 | # my $want_encoding = $got->value('Encoding'); |
212 | # my $encoding = find_encoding($want_encoding); |
213 | # |
214 | # $obj->croakError("$class: Encoding '$want_encoding' is not available") |
215 | # if ! $encoding; |
216 | # |
217 | # *$obj->{Encoding} = $encoding; |
218 | # } |
219 | |
220 | $obj->ckParams($got) |
221 | or $obj->croakError("${class}: " . $obj->error()); |
222 | |
223 | |
224 | $obj->saveStatus(STATUS_OK) ; |
225 | |
226 | my $status ; |
227 | if (! $merge) |
228 | { |
229 | *$obj->{Compress} = $obj->mkComp($class, $got) |
230 | or return undef; |
231 | |
232 | *$obj->{BytesWritten} = 0 ; |
233 | *$obj->{UnCompSize_32bit} = 0 ; |
234 | |
235 | *$obj->{Header} = $obj->mkHeader($got) ; |
236 | |
237 | if ( $outType eq 'buffer') { |
238 | ${ *$obj->{Buffer} } = '' |
239 | unless $appendOutput ; |
240 | ${ *$obj->{Buffer} } .= *$obj->{Header}; |
241 | } |
242 | else { |
243 | if ($outType eq 'handle') { |
244 | *$obj->{FH} = $outValue ; |
245 | setBinModeOutput(*$obj->{FH}) ; |
246 | $outValue->flush() ; |
247 | *$obj->{Handle} = 1 ; |
248 | if ($appendOutput) |
249 | { |
250 | seek(*$obj->{FH}, 0, SEEK_END) |
251 | or return $obj->saveErrorString(undef, "Cannot seek to end of output filehandle: $!", $!) ; |
252 | |
253 | } |
254 | } |
255 | elsif ($outType eq 'filename') { |
256 | my $mode = '>' ; |
257 | $mode = '>>' |
258 | if $appendOutput; |
259 | *$obj->{FH} = new IO::File "$mode $outValue" |
260 | or return $obj->saveErrorString(undef, "cannot open file '$outValue': $!", $!) ; |
261 | *$obj->{StdIO} = ($outValue eq '-'); |
262 | setBinModeOutput(*$obj->{FH}) ; |
263 | } |
264 | |
265 | |
266 | if (length *$obj->{Header}) { |
267 | defined *$obj->{FH}->write(*$obj->{Header}, length(*$obj->{Header})) |
268 | or return $obj->saveErrorString(undef, $!, $!) ; |
269 | } |
270 | } |
271 | } |
272 | else |
273 | { |
274 | *$obj->{Compress} = $obj->createMerge($outValue, $outType) |
275 | or return undef; |
276 | } |
277 | |
278 | *$obj->{Closed} = 0 ; |
279 | *$obj->{AutoClose} = $got->value('AutoClose') ; |
280 | *$obj->{Output} = $outValue; |
281 | *$obj->{ClassName} = $class; |
282 | *$obj->{Got} = $got; |
283 | *$obj->{OneShot} = 0 ; |
284 | |
285 | return $obj ; |
286 | } |
287 | |
288 | sub ckOutputParam |
289 | { |
290 | my $self = shift ; |
291 | my $from = shift ; |
292 | my $outType = whatIsOutput($_[0]); |
293 | |
294 | $self->croakError("$from: output parameter not a filename, filehandle or scalar ref") |
295 | if ! $outType ; |
296 | |
297 | $self->croakError("$from: output filename is undef or null string") |
298 | if $outType eq 'filename' && (! defined $_[0] || $_[0] eq '') ; |
299 | |
300 | $self->croakError("$from: output buffer is read-only") |
301 | if $outType eq 'buffer' && readonly(${ $_[0] }); |
302 | |
303 | return 1; |
304 | } |
305 | |
306 | |
307 | sub _def |
308 | { |
309 | my $obj = shift ; |
310 | |
311 | my $class= (caller)[0] ; |
312 | my $name = (caller(1))[3] ; |
313 | |
314 | $obj->croakError("$name: expected at least 1 parameters\n") |
315 | unless @_ >= 1 ; |
316 | |
317 | my $input = shift ; |
318 | my $haveOut = @_ ; |
319 | my $output = shift ; |
320 | |
321 | my $x = new Validator($class, *$obj->{Error}, $name, $input, $output) |
322 | or return undef ; |
323 | |
324 | push @_, $output if $haveOut && $x->{Hash}; |
325 | |
326 | *$obj->{OneShot} = 1 ; |
327 | |
328 | my $got = $obj->checkParams($name, undef, @_) |
329 | or return undef ; |
330 | |
331 | $x->{Got} = $got ; |
332 | |
333 | # if ($x->{Hash}) |
334 | # { |
335 | # while (my($k, $v) = each %$input) |
336 | # { |
337 | # $v = \$input->{$k} |
338 | # unless defined $v ; |
339 | # |
340 | # $obj->_singleTarget($x, 1, $k, $v, @_) |
341 | # or return undef ; |
342 | # } |
343 | # |
344 | # return keys %$input ; |
345 | # } |
346 | |
347 | if ($x->{GlobMap}) |
348 | { |
349 | $x->{oneInput} = 1 ; |
350 | foreach my $pair (@{ $x->{Pairs} }) |
351 | { |
352 | my ($from, $to) = @$pair ; |
353 | $obj->_singleTarget($x, 1, $from, $to, @_) |
354 | or return undef ; |
355 | } |
356 | |
357 | return scalar @{ $x->{Pairs} } ; |
358 | } |
359 | |
360 | if (! $x->{oneOutput} ) |
361 | { |
362 | my $inFile = ($x->{inType} eq 'filenames' |
363 | || $x->{inType} eq 'filename'); |
364 | |
365 | $x->{inType} = $inFile ? 'filename' : 'buffer'; |
366 | |
367 | foreach my $in ($x->{oneInput} ? $input : @$input) |
368 | { |
369 | my $out ; |
370 | $x->{oneInput} = 1 ; |
371 | |
372 | $obj->_singleTarget($x, $inFile, $in, \$out, @_) |
373 | or return undef ; |
374 | |
375 | push @$output, \$out ; |
376 | #if ($x->{outType} eq 'array') |
377 | # { push @$output, \$out } |
378 | #else |
379 | # { $output->{$in} = \$out } |
380 | } |
381 | |
382 | return 1 ; |
383 | } |
384 | |
385 | # finally the 1 to 1 and n to 1 |
386 | return $obj->_singleTarget($x, 1, $input, $output, @_); |
387 | |
388 | croak "should not be here" ; |
389 | } |
390 | |
391 | sub _singleTarget |
392 | { |
393 | my $obj = shift ; |
394 | my $x = shift ; |
395 | my $inputIsFilename = shift; |
396 | my $input = shift; |
397 | |
398 | if ($x->{oneInput}) |
399 | { |
400 | $obj->getFileInfo($x->{Got}, $input) |
401 | if isaFilename($input) and $inputIsFilename ; |
402 | |
403 | my $z = $obj->_create($x->{Got}, @_) |
404 | or return undef ; |
405 | |
406 | |
407 | defined $z->_wr2($input, $inputIsFilename) |
408 | or return $z->closeError(undef) ; |
409 | |
410 | return $z->close() ; |
411 | } |
412 | else |
413 | { |
414 | my $afterFirst = 0 ; |
415 | my $inputIsFilename = ($x->{inType} ne 'array'); |
416 | my $keep = $x->{Got}->clone(); |
417 | |
418 | #for my $element ( ($x->{inType} eq 'hash') ? keys %$input : @$input) |
419 | for my $element ( @$input) |
420 | { |
421 | my $isFilename = isaFilename($element); |
422 | |
423 | if ( $afterFirst ++ ) |
424 | { |
425 | defined addInterStream($obj, $element, $isFilename) |
426 | or return $obj->closeError(undef) ; |
427 | } |
428 | else |
429 | { |
430 | $obj->getFileInfo($x->{Got}, $element) |
431 | if $isFilename; |
432 | |
433 | $obj->_create($x->{Got}, @_) |
434 | or return undef ; |
435 | } |
436 | |
437 | defined $obj->_wr2($element, $isFilename) |
438 | or return $obj->closeError(undef) ; |
439 | |
440 | *$obj->{Got} = $keep->clone(); |
441 | } |
442 | return $obj->close() ; |
443 | } |
444 | |
445 | } |
446 | |
447 | sub _wr2 |
448 | { |
449 | my $self = shift ; |
450 | |
451 | my $source = shift ; |
452 | my $inputIsFilename = shift; |
453 | |
454 | my $input = $source ; |
455 | if (! $inputIsFilename) |
456 | { |
457 | $input = \$source |
458 | if ! ref $source; |
459 | } |
460 | |
461 | if ( ref $input && ref $input eq 'SCALAR' ) |
462 | { |
463 | return $self->syswrite($input, @_) ; |
464 | } |
465 | |
466 | if ( ! ref $input || isaFilehandle($input)) |
467 | { |
468 | my $isFilehandle = isaFilehandle($input) ; |
469 | |
470 | my $fh = $input ; |
471 | |
472 | if ( ! $isFilehandle ) |
473 | { |
474 | $fh = new IO::File "<$input" |
475 | or return $self->saveErrorString(undef, "cannot open file '$input': $!", $!) ; |
476 | } |
477 | binmode $fh if *$self->{Got}->valueOrDefault('BinModeIn') ; |
478 | |
479 | my $status ; |
480 | my $buff ; |
481 | my $count = 0 ; |
482 | while (($status = read($fh, $buff, 4096)) > 0) { |
483 | $count += length $buff; |
484 | defined $self->syswrite($buff, @_) |
485 | or return undef ; |
486 | } |
487 | |
488 | return $self->saveErrorString(undef, $!, $!) |
489 | if $status < 0 ; |
490 | |
491 | if ( (!$isFilehandle || *$self->{AutoClose}) && $input ne '-') |
492 | { |
493 | $fh->close() |
494 | or return undef ; |
495 | } |
496 | |
497 | return $count ; |
498 | } |
499 | |
500 | croak "Should not be here"; |
501 | return undef; |
502 | } |
503 | |
504 | sub addInterStream |
505 | { |
506 | my $self = shift ; |
507 | my $input = shift ; |
508 | my $inputIsFilename = shift ; |
509 | |
510 | if (*$self->{Got}->value('MultiStream')) |
511 | { |
512 | $self->getFileInfo(*$self->{Got}, $input) |
513 | #if isaFilename($input) and $inputIsFilename ; |
514 | if isaFilename($input) ; |
515 | |
516 | # TODO -- newStream needs to allow gzip/zip header to be modified |
517 | return $self->newStream(); |
518 | } |
519 | elsif (*$self->{Got}->value('AutoFlush')) |
520 | { |
521 | #return $self->flush(Z_FULL_FLUSH); |
522 | } |
523 | |
524 | return 1 ; |
525 | } |
526 | |
527 | sub TIEHANDLE |
528 | { |
529 | return $_[0] if ref($_[0]); |
530 | die "OOPS\n" ; |
531 | } |
532 | |
533 | sub UNTIE |
534 | { |
535 | my $self = shift ; |
536 | } |
537 | |
538 | sub DESTROY |
539 | { |
540 | my $self = shift ; |
541 | $self->close() ; |
542 | |
543 | # TODO - memory leak with 5.8.0 - this isn't called until |
544 | # global destruction |
545 | # |
546 | %{ *$self } = () ; |
547 | undef $self ; |
548 | } |
549 | |
550 | |
551 | |
552 | sub syswrite |
553 | { |
554 | my $self = shift ; |
555 | |
556 | my $buffer ; |
557 | if (ref $_[0] ) { |
558 | $self->croakError( *$self->{ClassName} . "::write: not a scalar reference" ) |
559 | unless ref $_[0] eq 'SCALAR' ; |
560 | $buffer = $_[0] ; |
561 | } |
562 | else { |
563 | $buffer = \$_[0] ; |
564 | } |
565 | |
566 | |
567 | if (@_ > 1) { |
568 | my $slen = defined $$buffer ? length($$buffer) : 0; |
569 | my $len = $slen; |
570 | my $offset = 0; |
571 | $len = $_[1] if $_[1] < $len; |
572 | |
573 | if (@_ > 2) { |
574 | $offset = $_[2] || 0; |
575 | $self->croakError(*$self->{ClassName} . "::write: offset outside string") |
576 | if $offset > $slen; |
577 | if ($offset < 0) { |
578 | $offset += $slen; |
579 | $self->croakError( *$self->{ClassName} . "::write: offset outside string") if $offset < 0; |
580 | } |
581 | my $rem = $slen - $offset; |
582 | $len = $rem if $rem < $len; |
583 | } |
584 | |
585 | $buffer = \substr($$buffer, $offset, $len) ; |
586 | } |
587 | |
588 | return 0 if ! defined $$buffer || length $$buffer == 0 ; |
589 | |
590 | my $buffer_length = defined $$buffer ? length($$buffer) : 0 ; |
591 | *$self->{BytesWritten} += $buffer_length ; |
592 | my $rest = 0xFFFFFFFF - *$self->{UnCompSize_32bit} ; |
593 | if ($buffer_length > $rest) { |
594 | *$self->{UnCompSize_32bit} = $buffer_length - $rest - 1; |
595 | } |
596 | else { |
597 | *$self->{UnCompSize_32bit} += $buffer_length ; |
598 | } |
599 | |
600 | # if (*$self->{Encoding}) { |
601 | # $$buffer = *$self->{Encoding}->encode($$buffer); |
602 | # } |
603 | |
604 | #my $length = length $$buffer; |
605 | my $status = *$self->{Compress}->compr($buffer, *$self->{Buffer}) ; |
606 | |
607 | return $self->saveErrorString(undef, *$self->{Compress}{Error}, |
608 | *$self->{Compress}{ErrorNo}) |
609 | if $status == STATUS_ERROR; |
610 | |
611 | |
612 | |
613 | if ( defined *$self->{FH} and length ${ *$self->{Buffer} }) { |
614 | defined *$self->{FH}->write( ${ *$self->{Buffer} }, length ${ *$self->{Buffer} } ) |
615 | or return $self->saveErrorString(undef, $!, $!); |
616 | ${ *$self->{Buffer} } = '' ; |
617 | } |
618 | |
619 | return $buffer_length; |
620 | } |
621 | |
622 | sub print |
623 | { |
624 | my $self = shift; |
625 | |
626 | #if (ref $self) { |
627 | # $self = *$self{GLOB} ; |
628 | #} |
629 | |
630 | if (defined $\) { |
631 | if (defined $,) { |
632 | defined $self->syswrite(join($,, @_) . $\); |
633 | } else { |
634 | defined $self->syswrite(join("", @_) . $\); |
635 | } |
636 | } else { |
637 | if (defined $,) { |
638 | defined $self->syswrite(join($,, @_)); |
639 | } else { |
640 | defined $self->syswrite(join("", @_)); |
641 | } |
642 | } |
643 | } |
644 | |
645 | sub printf |
646 | { |
647 | my $self = shift; |
648 | my $fmt = shift; |
649 | defined $self->syswrite(sprintf($fmt, @_)); |
650 | } |
651 | |
652 | |
653 | |
654 | sub flush |
655 | { |
656 | my $self = shift ; |
657 | my $opt = shift ; |
658 | |
659 | my $status = *$self->{Compress}->flush(*$self->{Buffer}, $opt) ; |
660 | return $self->saveErrorString(0, *$self->{Compress}{Error}, *$self->{Compress}{ErrorNo}) |
661 | if $status == STATUS_ERROR; |
662 | |
663 | if ( defined *$self->{FH} ) { |
664 | *$self->{FH}->clearerr(); |
665 | defined *$self->{FH}->write(${ *$self->{Buffer} }, length ${ *$self->{Buffer} }) |
666 | or return $self->saveErrorString(0, $!, $!); |
667 | ${ *$self->{Buffer} } = '' ; |
668 | } |
669 | |
670 | return 1; |
671 | } |
672 | |
673 | sub newStream |
674 | { |
675 | my $self = shift ; |
676 | |
677 | $self->_writeTrailer() |
678 | or return 0 ; |
679 | |
680 | my $got = $self->checkParams('newStream', *$self->{Got}, @_) |
681 | or return 0 ; |
682 | |
683 | $self->ckParams($got) |
684 | or $self->croakError("newStream: $self->{Error}"); |
685 | |
686 | *$self->{Header} = $self->mkHeader($got) ; |
687 | ${ *$self->{Buffer} } .= *$self->{Header} ; |
688 | |
689 | if (defined *$self->{FH}) |
690 | { |
691 | defined *$self->{FH}->write(${ *$self->{Buffer} }, |
692 | length ${ *$self->{Buffer} }) |
693 | or return $self->saveErrorString(0, $!, $!); |
694 | ${ *$self->{Buffer} } = '' ; |
695 | } |
696 | |
697 | my $status = *$self->{Compress}->reset() ; |
698 | return $self->saveErrorString(0, *$self->{Compress}{Error}, |
699 | *$self->{Compress}{ErrorNo}) |
700 | if $status == STATUS_ERROR; |
701 | |
702 | *$self->{BytesWritten} = 0 ; |
703 | *$self->{UnCompSize_32bit} = 0 ; |
704 | |
705 | return 1 ; |
706 | } |
707 | |
708 | sub _writeTrailer |
709 | { |
710 | my $self = shift ; |
711 | |
712 | my $status = *$self->{Compress}->close(*$self->{Buffer}) ; |
713 | return $self->saveErrorString(0, *$self->{Compress}{Error}, *$self->{Compress}{ErrorNo}) |
714 | if $status == STATUS_ERROR; |
715 | |
716 | my $trailer = $self->mkTrailer(); |
717 | defined $trailer |
718 | or return 0; |
719 | |
720 | ${ *$self->{Buffer} } .= $trailer; |
721 | |
722 | return 1 if ! defined *$self->{FH} ; |
723 | |
724 | defined *$self->{FH}->write(${ *$self->{Buffer} }, length ${ *$self->{Buffer} }) |
725 | or return $self->saveErrorString(0, $!, $!); |
726 | |
727 | ${ *$self->{Buffer} } = '' ; |
728 | |
729 | return 1; |
730 | } |
731 | |
732 | sub _writeFinalTrailer |
733 | { |
734 | my $self = shift ; |
735 | |
736 | ${ *$self->{Buffer} } .= $self->mkFinalTrailer(); |
737 | |
738 | return 1 if ! defined *$self->{FH} ; |
739 | |
740 | defined *$self->{FH}->write(${ *$self->{Buffer} }, length ${ *$self->{Buffer} }) |
741 | or return $self->saveErrorString(0, $!, $!); |
742 | |
743 | ${ *$self->{Buffer} } = '' ; |
744 | |
745 | return 1; |
746 | } |
747 | |
748 | sub close |
749 | { |
750 | my $self = shift ; |
751 | |
752 | return 1 if *$self->{Closed} || ! *$self->{Compress} ; |
753 | *$self->{Closed} = 1 ; |
754 | |
755 | untie *$self |
756 | if $] >= 5.008 ; |
757 | |
758 | $self->_writeTrailer() |
759 | or return 0 ; |
760 | |
761 | $self->_writeFinalTrailer() |
762 | or return 0 ; |
763 | |
764 | if (defined *$self->{FH}) { |
765 | #if (! *$self->{Handle} || *$self->{AutoClose}) { |
766 | if ((! *$self->{Handle} || *$self->{AutoClose}) && ! *$self->{StdIO}) { |
767 | $! = 0 ; |
768 | *$self->{FH}->close() |
769 | or return $self->saveErrorString(0, $!, $!); |
770 | } |
771 | delete *$self->{FH} ; |
772 | # This delete can set $! in older Perls, so reset the errno |
773 | $! = 0 ; |
774 | } |
775 | |
776 | return 1; |
777 | } |
778 | |
779 | |
780 | #sub total_in |
781 | #sub total_out |
782 | #sub msg |
783 | # |
784 | #sub crc |
785 | #{ |
786 | # my $self = shift ; |
787 | # return *$self->{Compress}->crc32() ; |
788 | #} |
789 | # |
790 | #sub msg |
791 | #{ |
792 | # my $self = shift ; |
793 | # return *$self->{Compress}->msg() ; |
794 | #} |
795 | # |
796 | #sub dict_adler |
797 | #{ |
798 | # my $self = shift ; |
799 | # return *$self->{Compress}->dict_adler() ; |
800 | #} |
801 | # |
802 | #sub get_Level |
803 | #{ |
804 | # my $self = shift ; |
805 | # return *$self->{Compress}->get_Level() ; |
806 | #} |
807 | # |
808 | #sub get_Strategy |
809 | #{ |
810 | # my $self = shift ; |
811 | # return *$self->{Compress}->get_Strategy() ; |
812 | #} |
813 | |
814 | |
815 | sub tell |
816 | { |
817 | my $self = shift ; |
818 | |
819 | #return *$self->{Compress}->total_in(); |
820 | return *$self->{BytesWritten} ; |
821 | } |
822 | |
823 | sub eof |
824 | { |
825 | my $self = shift ; |
826 | |
827 | return *$self->{Closed} ; |
828 | } |
829 | |
830 | |
831 | sub seek |
832 | { |
833 | my $self = shift ; |
834 | my $position = shift; |
835 | my $whence = shift ; |
836 | |
837 | my $here = $self->tell() ; |
838 | my $target = 0 ; |
839 | |
840 | #use IO::Handle qw(SEEK_SET SEEK_CUR SEEK_END); |
841 | use IO::Handle ; |
842 | |
843 | if ($whence == IO::Handle::SEEK_SET) { |
844 | $target = $position ; |
845 | } |
846 | elsif ($whence == IO::Handle::SEEK_CUR || $whence == IO::Handle::SEEK_END) { |
847 | $target = $here + $position ; |
848 | } |
849 | else { |
850 | $self->croakError(*$self->{ClassName} . "::seek: unknown value, $whence, for whence parameter"); |
851 | } |
852 | |
853 | # short circuit if seeking to current offset |
854 | return 1 if $target == $here ; |
855 | |
856 | # Outlaw any attempt to seek backwards |
857 | $self->croakError(*$self->{ClassName} . "::seek: cannot seek backwards") |
858 | if $target < $here ; |
859 | |
860 | # Walk the file to the new offset |
861 | my $offset = $target - $here ; |
862 | |
863 | my $buffer ; |
864 | defined $self->syswrite("\x00" x $offset) |
865 | or return 0; |
866 | |
867 | return 1 ; |
868 | } |
869 | |
870 | sub binmode |
871 | { |
872 | 1; |
873 | # my $self = shift ; |
874 | # return defined *$self->{FH} |
875 | # ? binmode *$self->{FH} |
876 | # : 1 ; |
877 | } |
878 | |
879 | sub fileno |
880 | { |
881 | my $self = shift ; |
882 | return defined *$self->{FH} |
883 | ? *$self->{FH}->fileno() |
884 | : undef ; |
885 | } |
886 | |
887 | sub _notAvailable |
888 | { |
889 | my $name = shift ; |
890 | return sub { croak "$name Not Available: File opened only for output" ; } ; |
891 | } |
892 | |
893 | *read = _notAvailable('read'); |
894 | *READ = _notAvailable('read'); |
895 | *readline = _notAvailable('readline'); |
896 | *READLINE = _notAvailable('readline'); |
897 | *getc = _notAvailable('getc'); |
898 | *GETC = _notAvailable('getc'); |
899 | |
900 | *FILENO = \&fileno; |
901 | *PRINT = \&print; |
902 | *PRINTF = \&printf; |
903 | *WRITE = \&syswrite; |
904 | *write = \&syswrite; |
905 | *SEEK = \&seek; |
906 | *TELL = \&tell; |
907 | *EOF = \&eof; |
908 | *CLOSE = \&close; |
909 | *BINMODE = \&binmode; |
910 | |
911 | #*sysread = \&_notAvailable; |
912 | #*syswrite = \&_write; |
913 | |
914 | 1; |
915 | |
916 | __END__ |
917 | |