Commit | Line | Data |
25f0751f |
1 | |
2 | package IO::Uncompress::Base ; |
3 | |
4 | use strict ; |
5 | use warnings; |
6 | use bytes; |
7 | |
8 | our (@ISA, $VERSION, @EXPORT_OK, %EXPORT_TAGS); |
93d092e2 |
9 | @ISA = qw(Exporter IO::File); |
25f0751f |
10 | |
11 | |
d56f7e4c |
12 | $VERSION = '2.006'; |
25f0751f |
13 | |
14 | use constant G_EOF => 0 ; |
15 | use constant G_ERR => -1 ; |
16 | |
d56f7e4c |
17 | use IO::Compress::Base::Common 2.006 ; |
25f0751f |
18 | #use Parse::Parameters ; |
19 | |
20 | use IO::File ; |
21 | use Symbol; |
22 | use Scalar::Util qw(readonly); |
23 | use List::Util qw(min); |
24 | use Carp ; |
25 | |
26 | %EXPORT_TAGS = ( ); |
27 | push @{ $EXPORT_TAGS{all} }, @EXPORT_OK ; |
28 | #Exporter::export_ok_tags('all') ; |
29 | |
30 | |
31 | sub smartRead |
32 | { |
33 | my $self = $_[0]; |
34 | my $out = $_[1]; |
35 | my $size = $_[2]; |
36 | $$out = "" ; |
37 | |
38 | my $offset = 0 ; |
39 | |
40 | |
6ecef415 |
41 | if (defined *$self->{InputLength}) { |
42 | return 0 |
43 | if *$self->{InputLengthRemaining} <= 0 ; |
44 | $size = min($size, *$self->{InputLengthRemaining}); |
2b4e0969 |
45 | } |
46 | |
25f0751f |
47 | if ( length *$self->{Prime} ) { |
48 | #$$out = substr(*$self->{Prime}, 0, $size, '') ; |
49 | $$out = substr(*$self->{Prime}, 0, $size) ; |
50 | substr(*$self->{Prime}, 0, $size) = '' ; |
6ecef415 |
51 | if (length $$out == $size) { |
52 | *$self->{InputLengthRemaining} -= length $$out |
53 | if defined *$self->{InputLength}; |
54 | |
25f0751f |
55 | return length $$out ; |
56 | } |
57 | $offset = length $$out ; |
58 | } |
59 | |
60 | my $get_size = $size - $offset ; |
61 | |
6ecef415 |
62 | #if ( defined *$self->{InputLength} ) { |
63 | # $get_size = min($get_size, *$self->{InputLengthRemaining}); |
64 | #} |
25f0751f |
65 | |
66 | if (defined *$self->{FH}) |
67 | { *$self->{FH}->read($$out, $get_size, $offset) } |
68 | elsif (defined *$self->{InputEvent}) { |
69 | my $got = 1 ; |
70 | while (length $$out < $size) { |
71 | last |
72 | if ($got = *$self->{InputEvent}->($$out, $get_size)) <= 0; |
73 | } |
74 | |
75 | if (length $$out > $size ) { |
76 | #*$self->{Prime} = substr($$out, $size, length($$out), ''); |
77 | *$self->{Prime} = substr($$out, $size, length($$out)); |
78 | substr($$out, $size, length($$out)) = ''; |
79 | } |
80 | |
81 | *$self->{EventEof} = 1 if $got <= 0 ; |
82 | } |
83 | else { |
84 | no warnings 'uninitialized'; |
85 | my $buf = *$self->{Buffer} ; |
86 | $$buf = '' unless defined $$buf ; |
87 | #$$out = '' unless defined $$out ; |
88 | substr($$out, $offset) = substr($$buf, *$self->{BufferOffset}, $get_size); |
e7d45986 |
89 | if (*$self->{ConsumeInput}) |
90 | { substr($$buf, 0, $get_size) = '' } |
91 | else |
92 | { *$self->{BufferOffset} += length($$out) - $offset } |
25f0751f |
93 | } |
94 | |
6ecef415 |
95 | *$self->{InputLengthRemaining} -= length($$out) #- $offset |
96 | if defined *$self->{InputLength}; |
25f0751f |
97 | |
98 | $self->saveStatus(length $$out < 0 ? STATUS_ERROR : STATUS_OK) ; |
99 | |
100 | return length $$out; |
101 | } |
102 | |
103 | sub pushBack |
104 | { |
105 | my $self = shift ; |
106 | |
107 | return if ! defined $_[0] || length $_[0] == 0 ; |
108 | |
109 | if (defined *$self->{FH} || defined *$self->{InputEvent} ) { |
110 | *$self->{Prime} = $_[0] . *$self->{Prime} ; |
2b4e0969 |
111 | *$self->{InputLengthRemaining} += length($_[0]); |
25f0751f |
112 | } |
113 | else { |
114 | my $len = length $_[0]; |
115 | |
116 | if($len > *$self->{BufferOffset}) { |
117 | *$self->{Prime} = substr($_[0], 0, $len - *$self->{BufferOffset}) . *$self->{Prime} ; |
118 | *$self->{InputLengthRemaining} = *$self->{InputLength}; |
119 | *$self->{BufferOffset} = 0 |
120 | } |
121 | else { |
122 | *$self->{InputLengthRemaining} += length($_[0]); |
123 | *$self->{BufferOffset} -= length($_[0]) ; |
124 | } |
125 | } |
126 | } |
127 | |
128 | sub smartSeek |
129 | { |
130 | my $self = shift ; |
131 | my $offset = shift ; |
132 | my $truncate = shift; |
133 | #print "smartSeek to $offset\n"; |
134 | |
135 | # TODO -- need to take prime into account |
136 | if (defined *$self->{FH}) |
137 | { *$self->{FH}->seek($offset, SEEK_SET) } |
138 | else { |
139 | *$self->{BufferOffset} = $offset ; |
140 | substr(${ *$self->{Buffer} }, *$self->{BufferOffset}) = '' |
141 | if $truncate; |
142 | return 1; |
143 | } |
144 | } |
145 | |
146 | sub smartWrite |
147 | { |
148 | my $self = shift ; |
149 | my $out_data = shift ; |
150 | |
151 | if (defined *$self->{FH}) { |
152 | # flush needed for 5.8.0 |
153 | defined *$self->{FH}->write($out_data, length $out_data) && |
154 | defined *$self->{FH}->flush() ; |
155 | } |
156 | else { |
157 | my $buf = *$self->{Buffer} ; |
158 | substr($$buf, *$self->{BufferOffset}, length $out_data) = $out_data ; |
159 | *$self->{BufferOffset} += length($out_data) ; |
160 | return 1; |
161 | } |
162 | } |
163 | |
164 | sub smartReadExact |
165 | { |
166 | return $_[0]->smartRead($_[1], $_[2]) == $_[2]; |
167 | } |
168 | |
169 | sub smartEof |
170 | { |
171 | my ($self) = $_[0]; |
172 | local $.; |
173 | |
e7d45986 |
174 | return 0 if length *$self->{Prime} || *$self->{PushMode}; |
25f0751f |
175 | |
176 | if (defined *$self->{FH}) |
177 | { *$self->{FH}->eof() } |
178 | elsif (defined *$self->{InputEvent}) |
179 | { *$self->{EventEof} } |
180 | else |
181 | { *$self->{BufferOffset} >= length(${ *$self->{Buffer} }) } |
182 | } |
183 | |
184 | sub clearError |
185 | { |
186 | my $self = shift ; |
187 | |
188 | *$self->{ErrorNo} = 0 ; |
189 | ${ *$self->{Error} } = '' ; |
190 | } |
191 | |
192 | sub saveStatus |
193 | { |
194 | my $self = shift ; |
195 | my $errno = shift() + 0 ; |
196 | #return $errno unless $errno || ! defined *$self->{ErrorNo}; |
197 | #return $errno unless $errno ; |
198 | |
199 | *$self->{ErrorNo} = $errno; |
200 | ${ *$self->{Error} } = '' ; |
201 | |
202 | return *$self->{ErrorNo} ; |
203 | } |
204 | |
205 | |
206 | sub saveErrorString |
207 | { |
208 | my $self = shift ; |
209 | my $retval = shift ; |
210 | |
211 | #return $retval if ${ *$self->{Error} }; |
212 | |
213 | ${ *$self->{Error} } = shift ; |
214 | *$self->{ErrorNo} = shift() + 0 if @_ ; |
215 | |
216 | #warn "saveErrorString: " . ${ *$self->{Error} } . " " . *$self->{Error} . "\n" ; |
217 | return $retval; |
218 | } |
219 | |
220 | sub croakError |
221 | { |
222 | my $self = shift ; |
223 | $self->saveErrorString(0, $_[0]); |
224 | croak $_[0]; |
225 | } |
226 | |
227 | |
228 | sub closeError |
229 | { |
230 | my $self = shift ; |
231 | my $retval = shift ; |
232 | |
233 | my $errno = *$self->{ErrorNo}; |
234 | my $error = ${ *$self->{Error} }; |
235 | |
236 | $self->close(); |
237 | |
238 | *$self->{ErrorNo} = $errno ; |
239 | ${ *$self->{Error} } = $error ; |
240 | |
241 | return $retval; |
242 | } |
243 | |
244 | sub error |
245 | { |
246 | my $self = shift ; |
247 | return ${ *$self->{Error} } ; |
248 | } |
249 | |
250 | sub errorNo |
251 | { |
252 | my $self = shift ; |
253 | return *$self->{ErrorNo}; |
254 | } |
255 | |
256 | sub HeaderError |
257 | { |
258 | my ($self) = shift; |
259 | return $self->saveErrorString(undef, "Header Error: $_[0]", STATUS_ERROR); |
260 | } |
261 | |
262 | sub TrailerError |
263 | { |
264 | my ($self) = shift; |
265 | return $self->saveErrorString(G_ERR, "Trailer Error: $_[0]", STATUS_ERROR); |
266 | } |
267 | |
268 | sub TruncatedHeader |
269 | { |
270 | my ($self) = shift; |
271 | return $self->HeaderError("Truncated in $_[0] Section"); |
272 | } |
273 | |
2b4e0969 |
274 | sub TruncatedTrailer |
275 | { |
276 | my ($self) = shift; |
277 | return $self->TrailerError("Truncated in $_[0] Section"); |
278 | } |
279 | |
258133d1 |
280 | sub postCheckParams |
281 | { |
282 | return 1; |
283 | } |
284 | |
25f0751f |
285 | sub checkParams |
286 | { |
287 | my $self = shift ; |
288 | my $class = shift ; |
289 | |
290 | my $got = shift || IO::Compress::Base::Parameters::new(); |
291 | |
292 | my $Valid = { |
293 | 'BlockSize' => [1, 1, Parse_unsigned, 16 * 1024], |
294 | 'AutoClose' => [1, 1, Parse_boolean, 0], |
295 | 'Strict' => [1, 1, Parse_boolean, 0], |
25f0751f |
296 | 'Append' => [1, 1, Parse_boolean, 0], |
297 | 'Prime' => [1, 1, Parse_any, undef], |
298 | 'MultiStream' => [1, 1, Parse_boolean, 0], |
299 | 'Transparent' => [1, 1, Parse_any, 1], |
300 | 'Scan' => [1, 1, Parse_boolean, 0], |
301 | 'InputLength' => [1, 1, Parse_unsigned, undef], |
302 | 'BinModeOut' => [1, 1, Parse_boolean, 0], |
4e7676c7 |
303 | #'Encode' => [1, 1, Parse_any, undef], |
304 | |
e7d45986 |
305 | #'ConsumeInput' => [1, 1, Parse_boolean, 0], |
25f0751f |
306 | |
307 | $self->getExtraParams(), |
308 | |
25f0751f |
309 | #'Todo - Revert to ordinary file on end Z_STREAM_END'=> 0, |
310 | # ContinueAfterEof |
311 | } ; |
312 | |
258133d1 |
313 | $Valid->{TrailingData} = [1, 1, Parse_writable_scalar, undef] |
314 | if *$self->{OneShot} ; |
25f0751f |
315 | |
316 | $got->parse($Valid, @_ ) |
317 | or $self->croakError("${class}: $got->{Error}") ; |
318 | |
258133d1 |
319 | $self->postCheckParams($got) |
320 | or $self->croakError("${class}: " . $self->error()) ; |
25f0751f |
321 | |
322 | return $got; |
323 | } |
324 | |
325 | sub _create |
326 | { |
327 | my $obj = shift; |
328 | my $got = shift; |
329 | my $append_mode = shift ; |
330 | |
331 | my $class = ref $obj; |
332 | $obj->croakError("$class: Missing Input parameter") |
333 | if ! @_ && ! $got ; |
334 | |
335 | my $inValue = shift ; |
336 | |
258133d1 |
337 | *$obj->{OneShot} = 0 ; |
338 | |
25f0751f |
339 | if (! $got) |
340 | { |
341 | $got = $obj->checkParams($class, undef, @_) |
342 | or return undef ; |
343 | } |
344 | |
345 | my $inType = whatIsInput($inValue, 1); |
346 | |
347 | $obj->ckInputParam($class, $inValue, 1) |
348 | or return undef ; |
349 | |
350 | *$obj->{InNew} = 1; |
351 | |
352 | $obj->ckParams($got) |
258133d1 |
353 | or $obj->croakError("${class}: " . *$obj->{Error}); |
25f0751f |
354 | |
355 | if ($inType eq 'buffer' || $inType eq 'code') { |
356 | *$obj->{Buffer} = $inValue ; |
357 | *$obj->{InputEvent} = $inValue |
358 | if $inType eq 'code' ; |
359 | } |
360 | else { |
361 | if ($inType eq 'handle') { |
362 | *$obj->{FH} = $inValue ; |
363 | *$obj->{Handle} = 1 ; |
258133d1 |
364 | |
25f0751f |
365 | # Need to rewind for Scan |
258133d1 |
366 | *$obj->{FH}->seek(0, SEEK_SET) |
367 | if $got->value('Scan'); |
25f0751f |
368 | } |
369 | else { |
370 | my $mode = '<'; |
371 | $mode = '+<' if $got->value('Scan'); |
372 | *$obj->{StdIO} = ($inValue eq '-'); |
373 | *$obj->{FH} = new IO::File "$mode $inValue" |
374 | or return $obj->saveErrorString(undef, "cannot open file '$inValue': $!", $!) ; |
375 | } |
376 | |
377 | *$obj->{LineNo} = $. = 0; |
378 | setBinModeInput(*$obj->{FH}) ; |
379 | |
380 | my $buff = "" ; |
381 | *$obj->{Buffer} = \$buff ; |
382 | } |
383 | |
4e7676c7 |
384 | if ($got->parsed('Encode')) { |
385 | my $want_encoding = $got->value('Encode'); |
386 | *$obj->{Encoding} = getEncoding($obj, $class, $want_encoding); |
387 | } |
388 | |
25f0751f |
389 | |
390 | *$obj->{InputLength} = $got->parsed('InputLength') |
391 | ? $got->value('InputLength') |
392 | : undef ; |
393 | *$obj->{InputLengthRemaining} = $got->value('InputLength'); |
394 | *$obj->{BufferOffset} = 0 ; |
395 | *$obj->{AutoClose} = $got->value('AutoClose'); |
396 | *$obj->{Strict} = $got->value('Strict'); |
25f0751f |
397 | *$obj->{BlockSize} = $got->value('BlockSize'); |
398 | *$obj->{Append} = $got->value('Append'); |
399 | *$obj->{AppendOutput} = $append_mode || $got->value('Append'); |
e7d45986 |
400 | *$obj->{ConsumeInput} = $got->value('ConsumeInput'); |
25f0751f |
401 | *$obj->{Transparent} = $got->value('Transparent'); |
402 | *$obj->{MultiStream} = $got->value('MultiStream'); |
403 | |
404 | # TODO - move these two into RawDeflate |
405 | *$obj->{Scan} = $got->value('Scan'); |
406 | *$obj->{ParseExtra} = $got->value('ParseExtra') |
407 | || $got->value('Strict') ; |
25f0751f |
408 | *$obj->{Type} = ''; |
409 | *$obj->{Prime} = $got->value('Prime') || '' ; |
410 | *$obj->{Pending} = ''; |
411 | *$obj->{Plain} = 0; |
412 | *$obj->{PlainBytesRead} = 0; |
413 | *$obj->{InflatedBytesRead} = 0; |
e7d45986 |
414 | *$obj->{UnCompSize} = new U64; |
415 | *$obj->{CompSize} = new U64; |
25f0751f |
416 | *$obj->{TotalInflatedBytesRead} = 0; |
417 | *$obj->{NewStream} = 0 ; |
418 | *$obj->{EventEof} = 0 ; |
419 | *$obj->{ClassName} = $class ; |
420 | *$obj->{Params} = $got ; |
421 | |
e7d45986 |
422 | if (*$obj->{ConsumeInput}) { |
423 | *$obj->{InNew} = 0; |
424 | *$obj->{Closed} = 0; |
425 | return $obj |
426 | } |
427 | |
25f0751f |
428 | my $status = $obj->mkUncomp($class, $got); |
429 | |
430 | return undef |
431 | unless defined $status; |
432 | |
433 | if ( ! $status) { |
434 | return undef |
435 | unless *$obj->{Transparent}; |
436 | |
437 | $obj->clearError(); |
438 | *$obj->{Type} = 'plain'; |
439 | *$obj->{Plain} = 1; |
440 | #$status = $obj->mkIdentityUncomp($class, $got); |
441 | $obj->pushBack(*$obj->{HeaderPending}) ; |
442 | } |
443 | |
444 | push @{ *$obj->{InfoList} }, *$obj->{Info} ; |
445 | |
446 | $obj->saveStatus(STATUS_OK) ; |
447 | *$obj->{InNew} = 0; |
448 | *$obj->{Closed} = 0; |
449 | |
450 | return $obj; |
451 | } |
452 | |
453 | sub ckInputParam |
454 | { |
455 | my $self = shift ; |
456 | my $from = shift ; |
457 | my $inType = whatIsInput($_[0], $_[1]); |
458 | |
459 | $self->croakError("$from: input parameter not a filename, filehandle, array ref or scalar ref") |
460 | if ! $inType ; |
461 | |
462 | if ($inType eq 'filename' ) |
463 | { |
464 | $self->croakError("$from: input filename is undef or null string") |
465 | if ! defined $_[0] || $_[0] eq '' ; |
466 | |
467 | if ($_[0] ne '-' && ! -e $_[0] ) |
468 | { |
469 | return $self->saveErrorString(undef, |
470 | "input file '$_[0]' does not exist", STATUS_ERROR); |
471 | } |
472 | } |
473 | |
474 | return 1; |
475 | } |
476 | |
477 | |
478 | sub _inf |
479 | { |
480 | my $obj = shift ; |
481 | |
482 | my $class = (caller)[0] ; |
483 | my $name = (caller(1))[3] ; |
484 | |
485 | $obj->croakError("$name: expected at least 1 parameters\n") |
486 | unless @_ >= 1 ; |
487 | |
488 | my $input = shift ; |
489 | my $haveOut = @_ ; |
490 | my $output = shift ; |
491 | |
492 | |
493 | my $x = new Validator($class, *$obj->{Error}, $name, $input, $output) |
494 | or return undef ; |
495 | |
496 | push @_, $output if $haveOut && $x->{Hash}; |
258133d1 |
497 | |
498 | *$obj->{OneShot} = 1 ; |
25f0751f |
499 | |
500 | my $got = $obj->checkParams($name, undef, @_) |
501 | or return undef ; |
502 | |
258133d1 |
503 | if ($got->parsed('TrailingData')) |
504 | { |
505 | *$obj->{TrailingData} = $got->value('TrailingData'); |
506 | } |
507 | |
e7d45986 |
508 | *$obj->{MultiStream} = $got->value('MultiStream'); |
509 | $got->value('MultiStream', 0); |
25f0751f |
510 | |
e7d45986 |
511 | $x->{Got} = $got ; |
25f0751f |
512 | |
e7d45986 |
513 | # if ($x->{Hash}) |
514 | # { |
515 | # while (my($k, $v) = each %$input) |
516 | # { |
517 | # $v = \$input->{$k} |
518 | # unless defined $v ; |
519 | # |
520 | # $obj->_singleTarget($x, $k, $v, @_) |
521 | # or return undef ; |
522 | # } |
523 | # |
524 | # return keys %$input ; |
525 | # } |
25f0751f |
526 | |
527 | if ($x->{GlobMap}) |
528 | { |
529 | $x->{oneInput} = 1 ; |
530 | foreach my $pair (@{ $x->{Pairs} }) |
531 | { |
532 | my ($from, $to) = @$pair ; |
e7d45986 |
533 | $obj->_singleTarget($x, $from, $to, @_) |
25f0751f |
534 | or return undef ; |
535 | } |
536 | |
537 | return scalar @{ $x->{Pairs} } ; |
538 | } |
539 | |
25f0751f |
540 | if (! $x->{oneOutput} ) |
541 | { |
542 | my $inFile = ($x->{inType} eq 'filenames' |
543 | || $x->{inType} eq 'filename'); |
544 | |
545 | $x->{inType} = $inFile ? 'filename' : 'buffer'; |
25f0751f |
546 | |
547 | foreach my $in ($x->{oneInput} ? $input : @$input) |
548 | { |
549 | my $out ; |
550 | $x->{oneInput} = 1 ; |
551 | |
e7d45986 |
552 | $obj->_singleTarget($x, $in, $output, @_) |
25f0751f |
553 | or return undef ; |
25f0751f |
554 | } |
555 | |
556 | return 1 ; |
557 | } |
558 | |
559 | # finally the 1 to 1 and n to 1 |
e7d45986 |
560 | return $obj->_singleTarget($x, $input, $output, @_); |
25f0751f |
561 | |
562 | croak "should not be here" ; |
563 | } |
564 | |
565 | sub retErr |
566 | { |
567 | my $x = shift ; |
568 | my $string = shift ; |
569 | |
570 | ${ $x->{Error} } = $string ; |
571 | |
572 | return undef ; |
573 | } |
574 | |
575 | sub _singleTarget |
576 | { |
577 | my $self = shift ; |
578 | my $x = shift ; |
25f0751f |
579 | my $input = shift; |
580 | my $output = shift; |
581 | |
e7d45986 |
582 | my $buff = ''; |
583 | $x->{buff} = \$buff ; |
25f0751f |
584 | |
585 | my $fh ; |
586 | if ($x->{outType} eq 'filename') { |
587 | my $mode = '>' ; |
588 | $mode = '>>' |
589 | if $x->{Got}->value('Append') ; |
590 | $x->{fh} = new IO::File "$mode $output" |
591 | or return retErr($x, "cannot open file '$output': $!") ; |
592 | binmode $x->{fh} if $x->{Got}->valueOrDefault('BinModeOut'); |
593 | |
594 | } |
595 | |
596 | elsif ($x->{outType} eq 'handle') { |
597 | $x->{fh} = $output; |
598 | binmode $x->{fh} if $x->{Got}->valueOrDefault('BinModeOut'); |
599 | if ($x->{Got}->value('Append')) { |
600 | seek($x->{fh}, 0, SEEK_END) |
601 | or return retErr($x, "Cannot seek to end of output filehandle: $!") ; |
602 | } |
603 | } |
604 | |
605 | |
606 | elsif ($x->{outType} eq 'buffer' ) |
607 | { |
608 | $$output = '' |
609 | unless $x->{Got}->value('Append'); |
610 | $x->{buff} = $output ; |
611 | } |
612 | |
613 | if ($x->{oneInput}) |
614 | { |
e7d45986 |
615 | defined $self->_rd2($x, $input, $output) |
25f0751f |
616 | or return undef; |
617 | } |
618 | else |
619 | { |
25f0751f |
620 | for my $element ( ($x->{inType} eq 'hash') ? keys %$input : @$input) |
621 | { |
e7d45986 |
622 | defined $self->_rd2($x, $element, $output) |
25f0751f |
623 | or return undef ; |
624 | } |
625 | } |
626 | |
627 | |
628 | if ( ($x->{outType} eq 'filename' && $output ne '-') || |
629 | ($x->{outType} eq 'handle' && $x->{Got}->value('AutoClose'))) { |
630 | $x->{fh}->close() |
631 | or return retErr($x, $!); |
25f0751f |
632 | delete $x->{fh}; |
633 | } |
634 | |
635 | return 1 ; |
636 | } |
637 | |
638 | sub _rd2 |
639 | { |
640 | my $self = shift ; |
641 | my $x = shift ; |
642 | my $input = shift; |
e7d45986 |
643 | my $output = shift; |
25f0751f |
644 | |
645 | my $z = createSelfTiedObject($x->{Class}, *$self->{Error}); |
646 | |
647 | $z->_create($x->{Got}, 1, $input, @_) |
648 | or return undef ; |
649 | |
650 | my $status ; |
651 | my $fh = $x->{fh}; |
652 | |
e7d45986 |
653 | while (1) { |
654 | |
655 | while (($status = $z->read($x->{buff})) > 0) { |
656 | if ($fh) { |
657 | print $fh ${ $x->{buff} } |
658 | or return $z->saveErrorString(undef, "Error writing to output file: $!", $!); |
659 | ${ $x->{buff} } = '' ; |
660 | } |
661 | } |
662 | |
663 | if (! $x->{oneOutput} ) { |
664 | my $ot = $x->{outType} ; |
665 | |
666 | if ($ot eq 'array') |
667 | { push @$output, $x->{buff} } |
668 | elsif ($ot eq 'hash') |
669 | { $output->{$input} = $x->{buff} } |
670 | |
671 | my $buff = ''; |
672 | $x->{buff} = \$buff; |
25f0751f |
673 | } |
e7d45986 |
674 | |
675 | last |
676 | unless *$self->{MultiStream}; |
677 | |
678 | $status = $z->nextStream(); |
679 | |
680 | last |
681 | unless $status == 1 ; |
25f0751f |
682 | } |
683 | |
684 | return $z->closeError(undef) |
685 | if $status < 0 ; |
686 | |
258133d1 |
687 | ${ *$self->{TrailingData} } = $z->trailingData() |
688 | if defined *$self->{TrailingData} ; |
689 | |
25f0751f |
690 | $z->close() |
691 | or return undef ; |
692 | |
693 | return 1 ; |
694 | } |
695 | |
696 | sub TIEHANDLE |
697 | { |
698 | return $_[0] if ref($_[0]); |
699 | die "OOPS\n" ; |
700 | |
701 | } |
702 | |
703 | sub UNTIE |
704 | { |
705 | my $self = shift ; |
706 | } |
707 | |
708 | |
709 | sub getHeaderInfo |
710 | { |
711 | my $self = shift ; |
712 | wantarray ? @{ *$self->{InfoList} } : *$self->{Info}; |
713 | } |
714 | |
715 | sub readBlock |
716 | { |
717 | my $self = shift ; |
718 | my $buff = shift ; |
719 | my $size = shift ; |
720 | |
721 | if (defined *$self->{CompressedInputLength}) { |
722 | if (*$self->{CompressedInputLengthRemaining} == 0) { |
723 | delete *$self->{CompressedInputLength}; |
724 | *$self->{CompressedInputLengthDone} = 1; |
725 | return STATUS_OK ; |
726 | } |
727 | $size = min($size, *$self->{CompressedInputLengthRemaining} ); |
728 | *$self->{CompressedInputLengthRemaining} -= $size ; |
729 | } |
730 | |
731 | my $status = $self->smartRead($buff, $size) ; |
732 | return $self->saveErrorString(STATUS_ERROR, "Error Reading Data") |
733 | if $status < 0 ; |
734 | |
735 | if ($status == 0 ) { |
736 | *$self->{Closed} = 1 ; |
737 | *$self->{EndStream} = 1 ; |
738 | return $self->saveErrorString(STATUS_ERROR, "unexpected end of file", STATUS_ERROR); |
739 | } |
740 | |
741 | return STATUS_OK; |
25f0751f |
742 | } |
743 | |
744 | sub postBlockChk |
745 | { |
746 | return STATUS_OK; |
747 | } |
748 | |
749 | sub _raw_read |
750 | { |
751 | # return codes |
752 | # >0 - ok, number of bytes read |
753 | # =0 - ok, eof |
754 | # <0 - not ok |
755 | |
756 | my $self = shift ; |
757 | |
758 | return G_EOF if *$self->{Closed} ; |
759 | #return G_EOF if !length *$self->{Pending} && *$self->{EndStream} ; |
760 | return G_EOF if *$self->{EndStream} ; |
761 | |
762 | my $buffer = shift ; |
763 | my $scan_mode = shift ; |
764 | |
765 | if (*$self->{Plain}) { |
766 | my $tmp_buff ; |
767 | my $len = $self->smartRead(\$tmp_buff, *$self->{BlockSize}) ; |
768 | |
769 | return $self->saveErrorString(G_ERR, "Error reading data: $!", $!) |
770 | if $len < 0 ; |
771 | |
772 | if ($len == 0 ) { |
773 | *$self->{EndStream} = 1 ; |
774 | } |
775 | else { |
776 | *$self->{PlainBytesRead} += $len ; |
777 | $$buffer .= $tmp_buff; |
778 | } |
779 | |
780 | return $len ; |
781 | } |
782 | |
783 | if (*$self->{NewStream}) { |
784 | |
e7d45986 |
785 | $self->gotoNextStream() > 0 |
786 | or return G_ERR; |
25f0751f |
787 | |
788 | # For the headers that actually uncompressed data, put the |
789 | # uncompressed data into the output buffer. |
790 | $$buffer .= *$self->{Pending} ; |
791 | my $len = length *$self->{Pending} ; |
792 | *$self->{Pending} = ''; |
793 | return $len; |
794 | } |
795 | |
e7d45986 |
796 | my $temp_buf = ''; |
25f0751f |
797 | my $outSize = 0; |
798 | my $status = $self->readBlock(\$temp_buf, *$self->{BlockSize}, $outSize) ; |
799 | return G_ERR |
800 | if $status == STATUS_ERROR ; |
801 | |
802 | my $buf_len = 0; |
803 | if ($status == STATUS_OK) { |
e7d45986 |
804 | my $beforeC_len = length $temp_buf; |
25f0751f |
805 | my $before_len = defined $$buffer ? length $$buffer : 0 ; |
806 | $status = *$self->{Uncomp}->uncompr(\$temp_buf, $buffer, |
807 | defined *$self->{CompressedInputLengthDone} || |
808 | $self->smartEof(), $outSize); |
25f0751f |
809 | |
810 | return $self->saveErrorString(G_ERR, *$self->{Uncomp}{Error}, *$self->{Uncomp}{ErrorNo}) |
811 | if $self->saveStatus($status) == STATUS_ERROR; |
812 | |
258133d1 |
813 | $self->postBlockChk($buffer, $before_len) == STATUS_OK |
25f0751f |
814 | or return G_ERR; |
815 | |
25f0751f |
816 | $buf_len = length($$buffer) - $before_len; |
25f0751f |
817 | |
e7d45986 |
818 | *$self->{CompSize}->add($beforeC_len - length $temp_buf) ; |
819 | |
25f0751f |
820 | *$self->{InflatedBytesRead} += $buf_len ; |
821 | *$self->{TotalInflatedBytesRead} += $buf_len ; |
e7d45986 |
822 | *$self->{UnCompSize}->add($buf_len) ; |
4e7676c7 |
823 | |
824 | $self->filterUncompressed($buffer); |
825 | |
826 | if (*$self->{Encoding}) { |
827 | $$buffer = *$self->{Encoding}->decode($$buffer); |
828 | } |
25f0751f |
829 | } |
830 | |
831 | if ($status == STATUS_ENDSTREAM) { |
832 | |
833 | *$self->{EndStream} = 1 ; |
834 | $self->pushBack($temp_buf) ; |
835 | $temp_buf = ''; |
836 | |
837 | my $trailer; |
838 | my $trailer_size = *$self->{Info}{TrailerLength} ; |
839 | my $got = 0; |
840 | if (*$self->{Info}{TrailerLength}) |
841 | { |
842 | $got = $self->smartRead(\$trailer, $trailer_size) ; |
843 | } |
844 | |
845 | if ($got == $trailer_size) { |
846 | $self->chkTrailer($trailer) == STATUS_OK |
847 | or return G_ERR; |
848 | } |
849 | else { |
850 | return $self->TrailerError("trailer truncated. Expected " . |
851 | "$trailer_size bytes, got $got") |
852 | if *$self->{Strict}; |
853 | $self->pushBack($trailer) ; |
854 | } |
855 | |
258133d1 |
856 | # TODO - if want to file file pointer, do it here |
857 | |
e7d45986 |
858 | if (! $self->smartEof()) { |
25f0751f |
859 | *$self->{NewStream} = 1 ; |
e7d45986 |
860 | |
861 | if (*$self->{MultiStream}) { |
862 | *$self->{EndStream} = 0 ; |
863 | return $buf_len ; |
864 | } |
25f0751f |
865 | } |
866 | |
867 | } |
868 | |
869 | |
870 | # return the number of uncompressed bytes read |
871 | return $buf_len ; |
872 | } |
873 | |
2b4e0969 |
874 | sub reset |
875 | { |
876 | my $self = shift ; |
877 | |
878 | return *$self->{Uncomp}->reset(); |
879 | } |
880 | |
881 | sub filterUncompressed |
882 | { |
883 | } |
884 | |
25f0751f |
885 | #sub isEndStream |
886 | #{ |
887 | # my $self = shift ; |
888 | # return *$self->{NewStream} || |
889 | # *$self->{EndStream} ; |
890 | #} |
891 | |
e7d45986 |
892 | sub nextStream |
893 | { |
894 | my $self = shift ; |
895 | |
896 | my $status = $self->gotoNextStream(); |
897 | $status == 1 |
898 | or return $status ; |
899 | |
900 | *$self->{TotalInflatedBytesRead} = 0 ; |
901 | *$self->{LineNo} = $. = 0; |
902 | |
903 | return 1; |
904 | } |
905 | |
906 | sub gotoNextStream |
907 | { |
908 | my $self = shift ; |
909 | |
910 | if (! *$self->{NewStream}) { |
911 | my $status = 1; |
912 | my $buffer ; |
913 | |
914 | # TODO - make this more efficient if know the offset for the end of |
915 | # the stream and seekable |
916 | $status = $self->read($buffer) |
917 | while $status > 0 ; |
918 | |
919 | return $status |
920 | if $status < 0; |
921 | } |
922 | |
923 | *$self->{NewStream} = 0 ; |
924 | *$self->{EndStream} = 0 ; |
925 | $self->reset(); |
926 | *$self->{UnCompSize}->reset(); |
927 | *$self->{CompSize}->reset(); |
928 | |
6ecef415 |
929 | my $magic = $self->ckMagic(); |
f6fd7794 |
930 | #*$self->{EndStream} = 0 ; |
e7d45986 |
931 | |
6ecef415 |
932 | if ( ! $magic) { |
f6fd7794 |
933 | if (! *$self->{Transparent} ) |
934 | { |
935 | *$self->{EndStream} = 1 ; |
936 | return 0; |
937 | } |
e7d45986 |
938 | |
f6fd7794 |
939 | $self->clearError(); |
940 | *$self->{Type} = 'plain'; |
941 | *$self->{Plain} = 1; |
942 | $self->pushBack(*$self->{HeaderPending}) ; |
943 | } |
944 | else |
945 | { |
946 | *$self->{Info} = $self->readHeader($magic); |
6ecef415 |
947 | |
f6fd7794 |
948 | if ( ! defined *$self->{Info} ) { |
949 | *$self->{EndStream} = 1 ; |
950 | return -1; |
951 | } |
6ecef415 |
952 | } |
e7d45986 |
953 | |
954 | push @{ *$self->{InfoList} }, *$self->{Info} ; |
955 | |
956 | return 1; |
957 | } |
958 | |
25f0751f |
959 | sub streamCount |
960 | { |
961 | my $self = shift ; |
962 | return 1 if ! defined *$self->{InfoList}; |
963 | return scalar @{ *$self->{InfoList} } ; |
964 | } |
965 | |
966 | sub read |
967 | { |
968 | # return codes |
969 | # >0 - ok, number of bytes read |
970 | # =0 - ok, eof |
971 | # <0 - not ok |
972 | |
973 | my $self = shift ; |
974 | |
975 | return G_EOF if *$self->{Closed} ; |
25f0751f |
976 | |
977 | my $buffer ; |
978 | |
25f0751f |
979 | if (ref $_[0] ) { |
980 | $self->croakError(*$self->{ClassName} . "::read: buffer parameter is read-only") |
981 | if readonly(${ $_[0] }); |
982 | |
983 | $self->croakError(*$self->{ClassName} . "::read: not a scalar reference $_[0]" ) |
984 | unless ref $_[0] eq 'SCALAR' ; |
985 | $buffer = $_[0] ; |
986 | } |
987 | else { |
988 | $self->croakError(*$self->{ClassName} . "::read: buffer parameter is read-only") |
989 | if readonly($_[0]); |
990 | |
991 | $buffer = \$_[0] ; |
992 | } |
993 | |
994 | my $length = $_[1] ; |
995 | my $offset = $_[2] || 0; |
996 | |
93d092e2 |
997 | if (! *$self->{AppendOutput}) { |
998 | if (! $offset) { |
999 | $$buffer = '' ; |
1000 | } |
1001 | else { |
1002 | if ($offset > length($$buffer)) { |
1003 | $$buffer .= "\x00" x ($offset - length($$buffer)); |
1004 | } |
1005 | else { |
1006 | substr($$buffer, $offset) = ''; |
1007 | } |
1008 | } |
1009 | } |
1010 | |
1011 | return G_EOF if !length *$self->{Pending} && *$self->{EndStream} ; |
1012 | |
25f0751f |
1013 | # the core read will return 0 if asked for 0 bytes |
1014 | return 0 if defined $length && $length == 0 ; |
1015 | |
1016 | $length = $length || 0; |
1017 | |
1018 | $self->croakError(*$self->{ClassName} . "::read: length parameter is negative") |
1019 | if $length < 0 ; |
1020 | |
25f0751f |
1021 | # Short-circuit if this is a simple read, with no length |
1022 | # or offset specified. |
1023 | unless ( $length || $offset) { |
1024 | if (length *$self->{Pending}) { |
1025 | $$buffer .= *$self->{Pending} ; |
1026 | my $len = length *$self->{Pending}; |
1027 | *$self->{Pending} = '' ; |
1028 | return $len ; |
1029 | } |
1030 | else { |
1031 | my $len = 0; |
1032 | $len = $self->_raw_read($buffer) |
1033 | while ! *$self->{EndStream} && $len == 0 ; |
1034 | return $len ; |
1035 | } |
1036 | } |
1037 | |
1038 | # Need to jump through more hoops - either length or offset |
1039 | # or both are specified. |
f6fd7794 |
1040 | my $out_buffer = *$self->{Pending} ; |
25f0751f |
1041 | |
93d092e2 |
1042 | |
f6fd7794 |
1043 | while (! *$self->{EndStream} && length($out_buffer) < $length) |
25f0751f |
1044 | { |
f6fd7794 |
1045 | my $buf_len = $self->_raw_read(\$out_buffer); |
25f0751f |
1046 | return $buf_len |
1047 | if $buf_len < 0 ; |
1048 | } |
1049 | |
f6fd7794 |
1050 | $length = length $out_buffer |
1051 | if length($out_buffer) < $length ; |
25f0751f |
1052 | |
258133d1 |
1053 | return 0 |
1054 | if $length == 0 ; |
1055 | |
93d092e2 |
1056 | $$buffer = '' |
1057 | if ! defined $$buffer; |
1058 | |
1059 | $offset = length $$buffer |
1060 | if *$self->{AppendOutput} ; |
1061 | |
f6fd7794 |
1062 | *$self->{Pending} = $out_buffer; |
1063 | $out_buffer = \*$self->{Pending} ; |
1064 | |
93d092e2 |
1065 | #substr($$buffer, $offset) = substr($$out_buffer, 0, $length, '') ; |
1066 | substr($$buffer, $offset) = substr($$out_buffer, 0, $length) ; |
1067 | substr($$out_buffer, 0, $length) = '' ; |
25f0751f |
1068 | |
1069 | return $length ; |
1070 | } |
1071 | |
1072 | sub _getline |
1073 | { |
1074 | my $self = shift ; |
1075 | |
1076 | # Slurp Mode |
1077 | if ( ! defined $/ ) { |
1078 | my $data ; |
1079 | 1 while $self->read($data) > 0 ; |
258133d1 |
1080 | return \$data ; |
1081 | } |
1082 | |
1083 | # Record Mode |
1084 | if ( ref $/ eq 'SCALAR' && ${$/} =~ /^\d+$/ && ${$/} > 0) { |
1085 | my $reclen = ${$/} ; |
1086 | my $data ; |
1087 | $self->read($data, $reclen) ; |
25f0751f |
1088 | return \$data ; |
1089 | } |
1090 | |
1091 | # Paragraph Mode |
1092 | if ( ! length $/ ) { |
1093 | my $paragraph ; |
1094 | while ($self->read($paragraph) > 0 ) { |
1095 | if ($paragraph =~ s/^(.*?\n\n+)//s) { |
1096 | *$self->{Pending} = $paragraph ; |
1097 | my $par = $1 ; |
25f0751f |
1098 | return \$par ; |
1099 | } |
1100 | } |
25f0751f |
1101 | return \$paragraph; |
1102 | } |
1103 | |
258133d1 |
1104 | # $/ isn't empty, or a reference, so it's Line Mode. |
25f0751f |
1105 | { |
1106 | my $line ; |
258133d1 |
1107 | my $offset; |
1108 | my $p = \*$self->{Pending} ; |
1109 | |
1110 | if (length(*$self->{Pending}) && |
1111 | ($offset = index(*$self->{Pending}, $/)) >=0) { |
1112 | my $l = substr(*$self->{Pending}, 0, $offset + length $/ ); |
1113 | substr(*$self->{Pending}, 0, $offset + length $/) = ''; |
1114 | return \$l; |
1115 | } |
1116 | |
25f0751f |
1117 | while ($self->read($line) > 0 ) { |
258133d1 |
1118 | my $offset = index($line, $/); |
1119 | if ($offset >= 0) { |
1120 | my $l = substr($line, 0, $offset + length $/ ); |
1121 | substr($line, 0, $offset + length $/) = ''; |
1122 | $$p = $line; |
1123 | return \$l; |
25f0751f |
1124 | } |
1125 | } |
258133d1 |
1126 | |
25f0751f |
1127 | return \$line; |
1128 | } |
1129 | } |
1130 | |
1131 | sub getline |
1132 | { |
1133 | my $self = shift; |
1134 | my $current_append = *$self->{AppendOutput} ; |
1135 | *$self->{AppendOutput} = 1; |
1136 | my $lineref = $self->_getline(); |
258133d1 |
1137 | $. = ++ *$self->{LineNo} if defined $$lineref ; |
25f0751f |
1138 | *$self->{AppendOutput} = $current_append; |
1139 | return $$lineref ; |
1140 | } |
1141 | |
1142 | sub getlines |
1143 | { |
1144 | my $self = shift; |
1145 | $self->croakError(*$self->{ClassName} . |
1146 | "::getlines: called in scalar context\n") unless wantarray; |
1147 | my($line, @lines); |
258133d1 |
1148 | push(@lines, $line) |
1149 | while defined($line = $self->getline); |
25f0751f |
1150 | return @lines; |
1151 | } |
1152 | |
1153 | sub READLINE |
1154 | { |
1155 | goto &getlines if wantarray; |
1156 | goto &getline; |
1157 | } |
1158 | |
1159 | sub getc |
1160 | { |
1161 | my $self = shift; |
1162 | my $buf; |
1163 | return $buf if $self->read($buf, 1); |
1164 | return undef; |
1165 | } |
1166 | |
1167 | sub ungetc |
1168 | { |
1169 | my $self = shift; |
1170 | *$self->{Pending} = "" unless defined *$self->{Pending} ; |
1171 | *$self->{Pending} = $_[0] . *$self->{Pending} ; |
1172 | } |
1173 | |
1174 | |
1175 | sub trailingData |
1176 | { |
1177 | my $self = shift ; |
25f0751f |
1178 | |
1179 | if (defined *$self->{FH} || defined *$self->{InputEvent} ) { |
1180 | return *$self->{Prime} ; |
1181 | } |
1182 | else { |
1183 | my $buf = *$self->{Buffer} ; |
1184 | my $offset = *$self->{BufferOffset} ; |
258133d1 |
1185 | return substr($$buf, $offset) ; |
25f0751f |
1186 | } |
1187 | } |
1188 | |
1189 | |
1190 | sub eof |
1191 | { |
1192 | my $self = shift ; |
1193 | |
1194 | return (*$self->{Closed} || |
1195 | (!length *$self->{Pending} |
1196 | && ( $self->smartEof() || *$self->{EndStream}))) ; |
1197 | } |
1198 | |
1199 | sub tell |
1200 | { |
1201 | my $self = shift ; |
1202 | |
1203 | my $in ; |
1204 | if (*$self->{Plain}) { |
1205 | $in = *$self->{PlainBytesRead} ; |
1206 | } |
1207 | else { |
1208 | $in = *$self->{TotalInflatedBytesRead} ; |
1209 | } |
1210 | |
1211 | my $pending = length *$self->{Pending} ; |
1212 | |
1213 | return 0 if $pending > $in ; |
1214 | return $in - $pending ; |
1215 | } |
1216 | |
1217 | sub close |
1218 | { |
1219 | # todo - what to do if close is called before the end of the gzip file |
1220 | # do we remember any trailing data? |
1221 | my $self = shift ; |
1222 | |
1223 | return 1 if *$self->{Closed} ; |
1224 | |
1225 | untie *$self |
1226 | if $] >= 5.008 ; |
1227 | |
1228 | my $status = 1 ; |
1229 | |
1230 | if (defined *$self->{FH}) { |
1231 | if ((! *$self->{Handle} || *$self->{AutoClose}) && ! *$self->{StdIO}) { |
1232 | #if ( *$self->{AutoClose}) { |
1233 | local $.; |
1234 | $! = 0 ; |
1235 | $status = *$self->{FH}->close(); |
1236 | return $self->saveErrorString(0, $!, $!) |
1237 | if !*$self->{InNew} && $self->saveStatus($!) != 0 ; |
1238 | } |
1239 | delete *$self->{FH} ; |
1240 | $! = 0 ; |
1241 | } |
1242 | *$self->{Closed} = 1 ; |
1243 | |
1244 | return 1; |
1245 | } |
1246 | |
1247 | sub DESTROY |
1248 | { |
1249 | my $self = shift ; |
1250 | $self->close() ; |
1251 | } |
1252 | |
1253 | sub seek |
1254 | { |
1255 | my $self = shift ; |
1256 | my $position = shift; |
1257 | my $whence = shift ; |
1258 | |
1259 | my $here = $self->tell() ; |
1260 | my $target = 0 ; |
1261 | |
1262 | |
1263 | if ($whence == SEEK_SET) { |
1264 | $target = $position ; |
1265 | } |
1266 | elsif ($whence == SEEK_CUR) { |
1267 | $target = $here + $position ; |
1268 | } |
1269 | elsif ($whence == SEEK_END) { |
1270 | $target = $position ; |
1271 | $self->croakError(*$self->{ClassName} . "::seek: SEEK_END not allowed") ; |
1272 | } |
1273 | else { |
1274 | $self->croakError(*$self->{ClassName} ."::seek: unknown value, $whence, for whence parameter"); |
1275 | } |
1276 | |
1277 | # short circuit if seeking to current offset |
1278 | return 1 if $target == $here ; |
1279 | |
1280 | # Outlaw any attempt to seek backwards |
1281 | $self->croakError( *$self->{ClassName} ."::seek: cannot seek backwards") |
1282 | if $target < $here ; |
1283 | |
1284 | # Walk the file to the new offset |
1285 | my $offset = $target - $here ; |
1286 | |
4e7676c7 |
1287 | my $got; |
1288 | while (($got = $self->read(my $buffer, min($offset, *$self->{BlockSize})) ) > 0) |
1289 | { |
1290 | $offset -= $got; |
1291 | last if $offset == 0 ; |
1292 | } |
25f0751f |
1293 | |
4e7676c7 |
1294 | return $offset == 0 ? 1 : 0 ; |
25f0751f |
1295 | } |
1296 | |
1297 | sub fileno |
1298 | { |
1299 | my $self = shift ; |
1300 | return defined *$self->{FH} |
1301 | ? fileno *$self->{FH} |
1302 | : undef ; |
1303 | } |
1304 | |
1305 | sub binmode |
1306 | { |
1307 | 1; |
1308 | # my $self = shift ; |
1309 | # return defined *$self->{FH} |
1310 | # ? binmode *$self->{FH} |
1311 | # : 1 ; |
1312 | } |
1313 | |
1314 | sub opened |
1315 | { |
1316 | my $self = shift ; |
1317 | return ! *$self->{Closed} ; |
1318 | } |
1319 | |
1320 | sub autoflush |
1321 | { |
1322 | my $self = shift ; |
1323 | return defined *$self->{FH} |
1324 | ? *$self->{FH}->autoflush(@_) |
1325 | : undef ; |
1326 | } |
1327 | |
1328 | sub input_line_number |
1329 | { |
1330 | my $self = shift ; |
1331 | my $last = *$self->{LineNo}; |
1332 | $. = *$self->{LineNo} = $_[1] if @_ ; |
1333 | return $last; |
1334 | } |
1335 | |
1336 | |
1337 | *BINMODE = \&binmode; |
1338 | *SEEK = \&seek; |
1339 | *READ = \&read; |
1340 | *sysread = \&read; |
1341 | *TELL = \&tell; |
1342 | *EOF = \&eof; |
1343 | |
1344 | *FILENO = \&fileno; |
1345 | *CLOSE = \&close; |
1346 | |
1347 | sub _notAvailable |
1348 | { |
1349 | my $name = shift ; |
1350 | #return sub { croak "$name Not Available" ; } ; |
1351 | return sub { croak "$name Not Available: File opened only for intput" ; } ; |
1352 | } |
1353 | |
1354 | |
1355 | *print = _notAvailable('print'); |
1356 | *PRINT = _notAvailable('print'); |
1357 | *printf = _notAvailable('printf'); |
1358 | *PRINTF = _notAvailable('printf'); |
1359 | *write = _notAvailable('write'); |
1360 | *WRITE = _notAvailable('write'); |
1361 | |
1362 | #*sysread = \&read; |
1363 | #*syswrite = \&_notAvailable; |
1364 | |
25f0751f |
1365 | |
1366 | |
1367 | package IO::Uncompress::Base ; |
1368 | |
1369 | |
1370 | 1 ; |
1371 | __END__ |
1372 | |
1373 | =head1 NAME |
1374 | |
1375 | |
1376 | IO::Uncompress::Base - Base Class for IO::Uncompress modules |
1377 | |
1378 | |
1379 | =head1 SYNOPSIS |
1380 | |
1381 | use IO::Uncompress::Base ; |
1382 | |
1383 | =head1 DESCRIPTION |
1384 | |
1385 | |
1386 | This module is not intended for direct use in application code. Its sole |
1387 | purpose if to to be sub-classed by IO::Unompress modules. |
1388 | |
1389 | |
1390 | |
1391 | |
1392 | =head1 SEE ALSO |
1393 | |
258133d1 |
1394 | L<Compress::Zlib>, L<IO::Compress::Gzip>, L<IO::Uncompress::Gunzip>, L<IO::Compress::Deflate>, L<IO::Uncompress::Inflate>, L<IO::Compress::RawDeflate>, L<IO::Uncompress::RawInflate>, L<IO::Compress::Bzip2>, L<IO::Uncompress::Bunzip2>, L<IO::Compress::Lzop>, L<IO::Uncompress::UnLzop>, L<IO::Compress::Lzf>, L<IO::Uncompress::UnLzf>, L<IO::Uncompress::AnyInflate>, L<IO::Uncompress::AnyUncompress> |
25f0751f |
1395 | |
1396 | L<Compress::Zlib::FAQ|Compress::Zlib::FAQ> |
1397 | |
1398 | L<File::GlobMapper|File::GlobMapper>, L<Archive::Zip|Archive::Zip>, |
1399 | L<Archive::Tar|Archive::Tar>, |
1400 | L<IO::Zlib|IO::Zlib> |
1401 | |
1402 | |
1403 | |
1404 | |
1405 | |
25f0751f |
1406 | =head1 AUTHOR |
1407 | |
cb7abd7f |
1408 | This module was written by Paul Marquess, F<pmqs@cpan.org>. |
25f0751f |
1409 | |
1410 | |
1411 | |
1412 | =head1 MODIFICATION HISTORY |
1413 | |
1414 | See the Changes file. |
1415 | |
1416 | =head1 COPYRIGHT AND LICENSE |
25f0751f |
1417 | |
b0cda13f |
1418 | Copyright (c) 2005-2007 Paul Marquess. All rights reserved. |
25f0751f |
1419 | |
1420 | This program is free software; you can redistribute it and/or |
1421 | modify it under the same terms as Perl itself. |
1422 | |
1423 | |