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f4c6fd49 |
1 | /* Filename: Zlib.xs |
2 | * Author : Paul Marquess, <pmqs@cpan.org> |
642e522c |
3 | * Created : 22nd January 1996 |
4 | * Version : 2.000 |
f4c6fd49 |
5 | * |
6 | * Copyright (c) 1995-2005 Paul Marquess. All rights reserved. |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the same terms as Perl itself. |
9 | * |
10 | */ |
11 | |
642e522c |
12 | /* Parts of this code are based on the files gzio.c and gzappend.c from |
13 | * the standard zlib source distribution. Below are the copyright statements |
14 | * from each. |
15 | */ |
f4c6fd49 |
16 | |
17 | /* gzio.c -- IO on .gz files |
18 | * Copyright (C) 1995 Jean-loup Gailly. |
19 | * For conditions of distribution and use, see copyright notice in zlib.h |
20 | */ |
21 | |
642e522c |
22 | /* gzappend -- command to append to a gzip file |
23 | |
24 | Copyright (C) 2003 Mark Adler, all rights reserved |
25 | version 1.1, 4 Nov 2003 |
26 | */ |
27 | |
f4c6fd49 |
28 | |
29 | |
30 | #include "EXTERN.h" |
31 | #include "perl.h" |
32 | #include "XSUB.h" |
33 | |
34 | #include <zlib.h> |
35 | |
1a6a8453 |
36 | /* zlib prior to 1.06 doesn't know about z_off_t */ |
37 | #ifndef z_off_t |
38 | # define z_off_t long |
39 | #endif |
40 | |
41 | #if ! defined(ZLIB_VERNUM) || ZLIB_VERNUM < 0x1200 |
42 | # define NEED_DUMMY_BYTE_AT_END |
43 | #endif |
642e522c |
44 | |
45 | #if defined(ZLIB_VERNUM) && ZLIB_VERNUM >= 0x1210 |
46 | # define MAGIC_APPEND |
47 | #endif |
48 | |
49 | #if defined(ZLIB_VERNUM) && ZLIB_VERNUM >= 0x1221 |
50 | # define AT_LEAST_ZLIB_1_2_2_1 |
51 | #endif |
52 | |
53 | #if defined(ZLIB_VERNUM) && ZLIB_VERNUM >= 0x1223 |
54 | # define AT_LEAST_ZLIB_1_2_2_3 |
55 | #endif |
56 | |
57 | #if defined(ZLIB_VERNUM) && ZLIB_VERNUM >= 0x1230 |
58 | # define AT_LEAST_ZLIB_1_2_3 |
59 | #endif |
60 | |
61 | #if 0 |
62 | |
63 | # include "ppport.h" |
64 | |
65 | #else |
66 | |
642e522c |
67 | # ifndef PERL_VERSION |
68 | # include "patchlevel.h" |
69 | # define PERL_REVISION 5 |
70 | # define PERL_VERSION PATCHLEVEL |
71 | # define PERL_SUBVERSION SUBVERSION |
72 | # endif |
73 | |
74 | # if PERL_REVISION == 5 && (PERL_VERSION < 4 || (PERL_VERSION == 4 && PERL_SUBVERSION <= 75 )) |
75 | |
76 | # define PL_sv_undef sv_undef |
77 | # define PL_na na |
78 | # define PL_curcop curcop |
79 | # define PL_compiling compiling |
80 | |
81 | # endif |
82 | |
83 | # ifndef newSVuv |
84 | # define newSVuv newSViv |
85 | # endif |
86 | |
642e522c |
87 | |
642e522c |
88 | |
1a6a8453 |
89 | # if PERL_REVISION == 5 && (PERL_VERSION < 8 || (PERL_VERSION == 8 && PERL_SUBVERSION < 4 )) |
642e522c |
90 | |
91 | # ifdef SvPVbyte_force |
92 | # undef SvPVbyte_force |
93 | # endif |
94 | |
95 | # define SvPVbyte_force(sv,lp) SvPV_force(sv,lp) |
96 | |
1a6a8453 |
97 | # endif |
f4c6fd49 |
98 | |
1a6a8453 |
99 | # ifndef SvPVbyte_nolen |
642e522c |
100 | # define SvPVbyte_nolen SvPV_nolen |
1a6a8453 |
101 | # endif |
642e522c |
102 | |
1a6a8453 |
103 | # ifndef SvPVbyte |
642e522c |
104 | # define SvPVbyte SvPV |
1a6a8453 |
105 | # endif |
642e522c |
106 | |
1a6a8453 |
107 | # ifndef dTHX |
642e522c |
108 | # define dTHX |
1a6a8453 |
109 | # endif |
642e522c |
110 | |
1a6a8453 |
111 | # ifndef SvPV_nolen |
642e522c |
112 | |
1a6a8453 |
113 | # define sv_2pv_nolen(a) my_sv_2pv_nolen(a) |
642e522c |
114 | |
115 | static char * |
116 | my_sv_2pv_nolen(register SV *sv) |
117 | { |
1a6a8453 |
118 | dTHX; |
642e522c |
119 | STRLEN n_a; |
120 | return sv_2pv(sv, &n_a); |
121 | } |
122 | |
123 | |
124 | /* SvPV_nolen depends on sv_2pv_nolen */ |
1a6a8453 |
125 | # define SvPV_nolen(sv) \ |
642e522c |
126 | ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \ |
127 | ? SvPVX(sv) : sv_2pv_nolen(sv)) |
f4c6fd49 |
128 | |
f4c6fd49 |
129 | |
1a6a8453 |
130 | # endif |
131 | |
132 | # ifndef SvGETMAGIC |
133 | # define SvGETMAGIC(x) STMT_START { if (SvGMAGICAL(x)) mg_get(x); } STMT_END |
134 | # endif |
135 | |
f4c6fd49 |
136 | #endif |
137 | |
1a6a8453 |
138 | # ifndef SvPVbyte_nolen |
139 | # define SvPVbyte_nolen SvPV_nolen |
140 | # endif |
141 | |
142 | # ifndef SvPVbyte_force |
143 | # define SvPVbyte_force(sv,lp) SvPV_force(sv,lp) |
144 | # endif |
145 | |
146 | #if PERL_REVISION == 5 && (PERL_VERSION >= 8 || (PERL_VERSION == 8 && PERL_SUBVERSION < 4 )) |
147 | # define UTF8_AVAILABLE |
f4c6fd49 |
148 | #endif |
149 | |
642e522c |
150 | typedef int DualType ; |
151 | typedef int int_undef ; |
152 | |
f4c6fd49 |
153 | typedef struct di_stream { |
642e522c |
154 | int flags ; |
155 | #define FLAG_APPEND 1 |
156 | #define FLAG_CRC32 2 |
157 | #define FLAG_ADLER32 4 |
158 | #define FLAG_CONSUME_INPUT 8 |
159 | uLong crc32 ; |
160 | uLong adler32 ; |
f4c6fd49 |
161 | z_stream stream; |
642e522c |
162 | uLong bufsize; |
163 | uLong bufinc; |
f4c6fd49 |
164 | SV * dictionary ; |
165 | uLong dict_adler ; |
642e522c |
166 | int last_error ; |
167 | bool zip_mode ; |
168 | #define SETP_BYTE |
169 | #ifdef SETP_BYTE |
f4c6fd49 |
170 | bool deflateParams_out_valid ; |
171 | Bytef deflateParams_out_byte; |
642e522c |
172 | #else |
173 | #define deflateParams_BUFFER_SIZE 0x4000 |
174 | uLong deflateParams_out_length; |
175 | Bytef* deflateParams_out_buffer; |
176 | #endif |
f4c6fd49 |
177 | int Level; |
178 | int Method; |
179 | int WindowBits; |
180 | int MemLevel; |
181 | int Strategy; |
642e522c |
182 | uLong bytesInflated ; |
1a6a8453 |
183 | uLong compressedBytes ; |
184 | uLong uncompressedBytes ; |
642e522c |
185 | #ifdef MAGIC_APPEND |
186 | |
187 | #define WINDOW_SIZE 32768U |
188 | |
189 | bool matchedEndBlock; |
190 | Bytef* window ; |
191 | int window_lastbit, window_left, window_full; |
192 | unsigned window_have; |
193 | off_t window_lastoff, window_end; |
194 | off_t window_endOffset; |
195 | |
196 | uLong lastBlockOffset ; |
197 | unsigned char window_lastByte ; |
198 | |
199 | |
200 | #endif |
f4c6fd49 |
201 | } di_stream; |
202 | |
203 | typedef di_stream * deflateStream ; |
204 | typedef di_stream * Compress__Zlib__deflateStream ; |
205 | typedef di_stream * inflateStream ; |
206 | typedef di_stream * Compress__Zlib__inflateStream ; |
642e522c |
207 | typedef di_stream * Compress__Zlib__inflateScanStream ; |
208 | |
209 | #define GZERRNO "Compress::Zlib::gzerrno" |
f4c6fd49 |
210 | |
642e522c |
211 | #define ZMALLOC(to, typ) ((to = (typ *)safemalloc(sizeof(typ))), \ |
212 | Zero(to,1,typ)) |
213 | |
214 | /* Figure out the Operating System */ |
215 | #ifdef MSDOS |
216 | # define OS_CODE 0x00 |
217 | #endif |
f4c6fd49 |
218 | |
642e522c |
219 | #if defined(AMIGA) || defined(AMIGAOS) |
220 | # define OS_CODE 0x01 |
221 | #endif |
222 | |
223 | #if defined(VAXC) || defined(VMS) |
224 | # define OS_CODE 0x02 |
225 | #endif |
f4c6fd49 |
226 | |
642e522c |
227 | #if 0 /* VM/CMS */ |
228 | # define OS_CODE 0x04 |
229 | #endif |
230 | |
231 | #if defined(ATARI) || defined(atarist) |
232 | # define OS_CODE 0x05 |
233 | #endif |
234 | |
235 | #ifdef OS2 |
236 | # define OS_CODE 0x06 |
237 | #endif |
238 | |
239 | #if defined(MACOS) || defined(TARGET_OS_MAC) |
240 | # define OS_CODE 0x07 |
241 | #endif |
f4c6fd49 |
242 | |
642e522c |
243 | #if 0 /* Z-System */ |
244 | # define OS_CODE 0x08 |
245 | #endif |
246 | |
247 | #if 0 /* CP/M */ |
248 | # define OS_CODE 0x09 |
249 | #endif |
250 | |
251 | #ifdef TOPS20 |
252 | # define OS_CODE 0x0a |
253 | #endif |
f4c6fd49 |
254 | |
642e522c |
255 | #ifdef WIN32 /* Window 95 & Windows NT */ |
256 | # define OS_CODE 0x0b |
257 | #endif |
258 | |
259 | #if 0 /* QDOS */ |
260 | # define OS_CODE 0x0c |
261 | #endif |
262 | |
263 | #if 0 /* Acorn RISCOS */ |
264 | # define OS_CODE 0x0d |
265 | #endif |
266 | |
267 | #if 0 /* ??? */ |
268 | # define OS_CODE 0x0e |
269 | #endif |
270 | |
271 | #ifdef __50SERIES /* Prime/PRIMOS */ |
272 | # define OS_CODE 0x0F |
273 | #endif |
274 | |
275 | /* Default to UNIX */ |
276 | #ifndef OS_CODE |
277 | # define OS_CODE 0x03 /* assume Unix */ |
278 | #endif |
f4c6fd49 |
279 | |
642e522c |
280 | #ifndef GZIP_OS_CODE |
281 | # define GZIP_OS_CODE OS_CODE |
282 | #endif |
f4c6fd49 |
283 | |
284 | #define adlerInitial adler32(0L, Z_NULL, 0) |
285 | #define crcInitial crc32(0L, Z_NULL, 0) |
286 | |
642e522c |
287 | |
c042ae3a |
288 | static const char * const my_z_errmsg[] = { |
f4c6fd49 |
289 | "need dictionary", /* Z_NEED_DICT 2 */ |
290 | "stream end", /* Z_STREAM_END 1 */ |
291 | "", /* Z_OK 0 */ |
292 | "file error", /* Z_ERRNO (-1) */ |
293 | "stream error", /* Z_STREAM_ERROR (-2) */ |
294 | "data error", /* Z_DATA_ERROR (-3) */ |
295 | "insufficient memory", /* Z_MEM_ERROR (-4) */ |
296 | "buffer error", /* Z_BUF_ERROR (-5) */ |
297 | "incompatible version",/* Z_VERSION_ERROR(-6) */ |
298 | ""}; |
f4c6fd49 |
299 | |
642e522c |
300 | #define setDUALstatus(var, err) \ |
301 | sv_setnv(var, (double)err) ; \ |
302 | sv_setpv(var, ((err) ? GetErrorString(err) : "")) ; \ |
303 | SvNOK_on(var); |
304 | |
305 | |
c042ae3a |
306 | #if defined(__SYMBIAN32__) |
307 | # define NO_WRITEABLE_DATA |
308 | #endif |
309 | |
310 | #define TRACE_DEFAULT 0 |
311 | |
312 | #ifdef NO_WRITEABLE_DATA |
642e522c |
313 | # define trace TRACE_DEFAULT |
c042ae3a |
314 | #else |
642e522c |
315 | static int trace = TRACE_DEFAULT ; |
c042ae3a |
316 | #endif |
f4c6fd49 |
317 | |
c042ae3a |
318 | /* Dodge PerlIO hiding of these functions. */ |
319 | #undef printf |
f4c6fd49 |
320 | |
642e522c |
321 | static char * |
322 | #ifdef CAN_PROTOTYPE |
323 | GetErrorString(int error_no) |
324 | #else |
325 | GetErrorString(error_no) |
326 | int error_no ; |
327 | #endif |
328 | { |
329 | dTHX; |
330 | char * errstr ; |
331 | |
332 | if (error_no == Z_ERRNO) { |
333 | errstr = Strerror(errno) ; |
334 | } |
335 | else |
336 | /* errstr = gzerror(fil, &error_no) ; */ |
337 | errstr = (char*) my_z_errmsg[2 - error_no]; |
338 | |
339 | return errstr ; |
340 | } |
341 | |
342 | #if 0 |
f4c6fd49 |
343 | static void |
344 | #ifdef CAN_PROTOTYPE |
345 | SetGzErrorNo(int error_no) |
346 | #else |
347 | SetGzErrorNo(error_no) |
348 | int error_no ; |
349 | #endif |
350 | { |
1a6a8453 |
351 | dTHX; |
f4c6fd49 |
352 | char * errstr ; |
353 | SV * gzerror_sv = perl_get_sv(GZERRNO, FALSE) ; |
354 | |
355 | if (error_no == Z_ERRNO) { |
356 | error_no = errno ; |
357 | errstr = Strerror(errno) ; |
358 | } |
359 | else |
360 | /* errstr = gzerror(fil, &error_no) ; */ |
361 | errstr = (char*) my_z_errmsg[2 - error_no]; |
362 | |
363 | if (SvIV(gzerror_sv) != error_no) { |
364 | sv_setiv(gzerror_sv, error_no) ; |
365 | sv_setpv(gzerror_sv, errstr) ; |
366 | SvIOK_on(gzerror_sv) ; |
367 | } |
368 | |
369 | } |
370 | |
642e522c |
371 | |
f4c6fd49 |
372 | static void |
373 | #ifdef CAN_PROTOTYPE |
374 | SetGzError(gzFile file) |
375 | #else |
376 | SetGzError(file) |
377 | gzFile file ; |
378 | #endif |
379 | { |
380 | int error_no ; |
381 | |
382 | (void)gzerror(file, &error_no) ; |
383 | SetGzErrorNo(error_no) ; |
384 | } |
385 | |
642e522c |
386 | #endif |
387 | |
388 | #ifdef MAGIC_APPEND |
389 | |
390 | /* |
391 | The following two functions are taken almost directly from |
392 | examples/gzappend.c. Only cosmetic changes have been made to conform to |
393 | the coding style of the rest of the code in this file. |
394 | */ |
395 | |
396 | |
397 | /* return the greatest common divisor of a and b using Euclid's algorithm, |
398 | modified to be fast when one argument much greater than the other, and |
399 | coded to avoid unnecessary swapping */ |
400 | static unsigned |
401 | #ifdef CAN_PROTOTYPE |
402 | gcd(unsigned a, unsigned b) |
403 | #else |
404 | gcd(a, b) |
405 | unsigned a; |
406 | unsigned b; |
407 | #endif |
408 | { |
409 | unsigned c; |
410 | |
411 | while (a && b) |
412 | if (a > b) { |
413 | c = b; |
414 | while (a - c >= c) |
415 | c <<= 1; |
416 | a -= c; |
417 | } |
418 | else { |
419 | c = a; |
420 | while (b - c >= c) |
421 | c <<= 1; |
422 | b -= c; |
423 | } |
424 | return a + b; |
425 | } |
426 | |
427 | /* rotate list[0..len-1] left by rot positions, in place */ |
428 | static void |
429 | #ifdef CAN_PROTOTYPE |
430 | rotate(unsigned char *list, unsigned len, unsigned rot) |
431 | #else |
432 | rotate(list, len, rot) |
433 | unsigned char *list; |
434 | unsigned len ; |
435 | unsigned rot; |
436 | #endif |
437 | { |
438 | unsigned char tmp; |
439 | unsigned cycles; |
440 | unsigned char *start, *last, *to, *from; |
441 | |
442 | /* normalize rot and handle degenerate cases */ |
443 | if (len < 2) return; |
444 | if (rot >= len) rot %= len; |
445 | if (rot == 0) return; |
446 | |
447 | /* pointer to last entry in list */ |
448 | last = list + (len - 1); |
449 | |
450 | /* do simple left shift by one */ |
451 | if (rot == 1) { |
452 | tmp = *list; |
453 | memcpy(list, list + 1, len - 1); |
454 | *last = tmp; |
455 | return; |
456 | } |
457 | |
458 | /* do simple right shift by one */ |
459 | if (rot == len - 1) { |
460 | tmp = *last; |
461 | memmove(list + 1, list, len - 1); |
462 | *list = tmp; |
463 | return; |
464 | } |
465 | |
466 | /* otherwise do rotate as a set of cycles in place */ |
467 | cycles = gcd(len, rot); /* number of cycles */ |
468 | do { |
469 | start = from = list + cycles; /* start index is arbitrary */ |
470 | tmp = *from; /* save entry to be overwritten */ |
471 | for (;;) { |
472 | to = from; /* next step in cycle */ |
473 | from += rot; /* go right rot positions */ |
474 | if (from > last) from -= len; /* (pointer better not wrap) */ |
475 | if (from == start) break; /* all but one shifted */ |
476 | *to = *from; /* shift left */ |
477 | } |
478 | *to = tmp; /* complete the circle */ |
479 | } while (--cycles); |
480 | } |
481 | |
482 | #endif /* MAGIC_APPEND */ |
483 | |
f4c6fd49 |
484 | static void |
485 | #ifdef CAN_PROTOTYPE |
486 | DispHex(void * ptr, int length) |
487 | #else |
488 | DispHex(ptr, length) |
489 | void * ptr; |
490 | int length; |
491 | #endif |
492 | { |
493 | char * p = (char*)ptr; |
494 | int i; |
495 | for (i = 0; i < length; ++i) { |
496 | printf(" %02x", 0xFF & *(p+i)); |
497 | } |
498 | } |
499 | |
500 | |
501 | static void |
502 | #ifdef CAN_PROTOTYPE |
503 | DispStream(di_stream * s, char * message) |
504 | #else |
505 | DispStream(s, message) |
506 | di_stream * s; |
507 | char * message; |
508 | #endif |
509 | { |
510 | |
511 | #if 0 |
512 | if (! trace) |
513 | return ; |
514 | #endif |
515 | |
642e522c |
516 | #define EnDis(f) (s->flags & f ? "Enabled" : "Disabled") |
517 | |
518 | printf("DispStream 0x%p", s) ; |
519 | if (message) |
520 | printf("- %s \n", message) ; |
521 | printf("\n") ; |
f4c6fd49 |
522 | |
523 | if (!s) { |
642e522c |
524 | printf(" stream pointer is NULL\n"); |
f4c6fd49 |
525 | } |
526 | else { |
642e522c |
527 | printf(" stream 0x%p\n", &(s->stream)); |
528 | printf(" zalloc 0x%p\n", s->stream.zalloc); |
529 | printf(" zfree 0x%p\n", s->stream.zfree); |
530 | printf(" opaque 0x%p\n", s->stream.opaque); |
531 | if (s->stream.msg) |
532 | printf(" msg %s\n", s->stream.msg); |
533 | else |
534 | printf(" msg \n"); |
535 | printf(" next_in 0x%p", s->stream.next_in); |
536 | if (s->stream.next_in){ |
537 | printf(" =>"); |
f4c6fd49 |
538 | DispHex(s->stream.next_in, 4); |
642e522c |
539 | } |
f4c6fd49 |
540 | printf("\n"); |
541 | |
642e522c |
542 | printf(" next_out 0x%p", s->stream.next_out); |
543 | if (s->stream.next_out){ |
544 | printf(" =>"); |
f4c6fd49 |
545 | DispHex(s->stream.next_out, 4); |
642e522c |
546 | } |
f4c6fd49 |
547 | printf("\n"); |
548 | |
642e522c |
549 | printf(" avail_in %lu\n", (unsigned long)s->stream.avail_in); |
550 | printf(" avail_out %lu\n", (unsigned long)s->stream.avail_out); |
551 | printf(" total_in %ld\n", s->stream.total_in); |
552 | printf(" total_out %ld\n", s->stream.total_out); |
553 | printf(" adler %ld\n", s->stream.adler ); |
554 | printf(" bufsize %ld\n", s->bufsize); |
555 | printf(" dictionary 0x%p\n", s->dictionary); |
556 | printf(" dict_adler 0x%ld\n",s->dict_adler); |
557 | printf(" zip_mode %d\n", s->zip_mode); |
558 | printf(" crc32 0x%x\n", (unsigned)s->crc32); |
559 | printf(" adler32 0x%x\n", (unsigned)s->adler32); |
560 | printf(" flags 0x%x\n", s->flags); |
561 | printf(" APPEND %s\n", EnDis(FLAG_APPEND)); |
562 | printf(" CRC32 %s\n", EnDis(FLAG_CRC32)); |
563 | printf(" ADLER32 %s\n", EnDis(FLAG_ADLER32)); |
564 | printf(" CONSUME %s\n", EnDis(FLAG_CONSUME_INPUT)); |
565 | |
566 | #ifdef MAGIC_APPEND |
567 | printf(" window 0x%p\n", s->window); |
568 | #endif |
569 | printf("\n"); |
f4c6fd49 |
570 | |
571 | } |
572 | } |
573 | |
f4c6fd49 |
574 | static di_stream * |
575 | #ifdef CAN_PROTOTYPE |
642e522c |
576 | InitStream(void) |
f4c6fd49 |
577 | #else |
642e522c |
578 | InitStream() |
f4c6fd49 |
579 | #endif |
580 | { |
581 | di_stream *s ; |
582 | |
583 | ZMALLOC(s, di_stream) ; |
584 | |
f4c6fd49 |
585 | return s ; |
586 | |
587 | } |
588 | |
642e522c |
589 | static void |
f4c6fd49 |
590 | #ifdef CAN_PROTOTYPE |
642e522c |
591 | PostInitStream(di_stream * s, int flags, int bufsize, int windowBits) |
f4c6fd49 |
592 | #else |
642e522c |
593 | PostInitStream(s, flags, bufsize, windowBits) |
594 | di_stream *s ; |
595 | int flags ; |
596 | int bufsize ; |
597 | int windowBits ; |
f4c6fd49 |
598 | #endif |
599 | { |
642e522c |
600 | s->bufsize = bufsize ; |
601 | s->bufinc = bufsize ; |
1a6a8453 |
602 | s->compressedBytes = |
603 | s->uncompressedBytes = |
642e522c |
604 | s->last_error = 0 ; |
605 | s->flags = flags ; |
606 | s->zip_mode = (windowBits < 0) ; |
607 | if (flags & FLAG_CRC32) |
608 | s->crc32 = crcInitial ; |
609 | if (flags & FLAG_ADLER32) |
610 | s->adler32 = adlerInitial ; |
f4c6fd49 |
611 | } |
612 | |
642e522c |
613 | |
f4c6fd49 |
614 | static SV* |
615 | #ifdef CAN_PROTOTYPE |
616 | deRef(SV * sv, char * string) |
617 | #else |
618 | deRef(sv, string) |
619 | SV * sv ; |
620 | char * string; |
621 | #endif |
622 | { |
c042ae3a |
623 | dTHX; |
642e522c |
624 | SvGETMAGIC(sv); |
625 | |
f4c6fd49 |
626 | if (SvROK(sv)) { |
642e522c |
627 | sv = SvRV(sv) ; |
628 | SvGETMAGIC(sv); |
629 | switch(SvTYPE(sv)) { |
f4c6fd49 |
630 | case SVt_PVAV: |
631 | case SVt_PVHV: |
632 | case SVt_PVCV: |
633 | croak("%s: buffer parameter is not a SCALAR reference", string); |
642e522c |
634 | } |
635 | if (SvROK(sv)) |
636 | croak("%s: buffer parameter is a reference to a reference", string) ; |
f4c6fd49 |
637 | } |
638 | |
639 | if (!SvOK(sv)) { |
640 | sv = newSVpv("", 0); |
642e522c |
641 | } |
642 | |
643 | return sv ; |
644 | } |
645 | |
646 | static SV* |
647 | #ifdef CAN_PROTOTYPE |
648 | deRef_l(SV * sv, char * string) |
649 | #else |
650 | deRef_l(sv, string) |
651 | SV * sv ; |
652 | char * string ; |
653 | #endif |
654 | { |
0added8b |
655 | dTHX; |
642e522c |
656 | bool wipe = 0 ; |
657 | |
658 | SvGETMAGIC(sv); |
659 | wipe = ! SvOK(sv) ; |
660 | |
661 | if (SvROK(sv)) { |
662 | sv = SvRV(sv) ; |
663 | SvGETMAGIC(sv); |
664 | wipe = ! SvOK(sv) ; |
665 | |
666 | switch(SvTYPE(sv)) { |
667 | case SVt_PVAV: |
668 | case SVt_PVHV: |
669 | case SVt_PVCV: |
670 | croak("%s: buffer parameter is not a SCALAR reference", string); |
671 | } |
672 | if (SvROK(sv)) |
673 | croak("%s: buffer parameter is a reference to a reference", string) ; |
674 | } |
675 | |
676 | if (SvREADONLY(sv) && PL_curcop != &PL_compiling) |
677 | croak("%s: buffer parameter is read-only", string); |
678 | |
679 | SvUPGRADE(sv, SVt_PV); |
680 | |
681 | if (wipe) |
682 | SvCUR_set(sv, 0); |
683 | |
684 | SvOOK_off(sv); |
685 | SvPOK_only(sv); |
686 | |
f4c6fd49 |
687 | return sv ; |
688 | } |
689 | |
642e522c |
690 | |
f4c6fd49 |
691 | #include "constants.h" |
692 | |
642e522c |
693 | MODULE = Compress::Zlib PACKAGE = Compress::Zlib PREFIX = Zip_ |
f4c6fd49 |
694 | |
695 | REQUIRE: 1.924 |
696 | PROTOTYPES: DISABLE |
697 | |
698 | INCLUDE: constants.xs |
699 | |
700 | BOOT: |
701 | /* Check this version of zlib is == 1 */ |
702 | if (zlibVersion()[0] != '1') |
703 | croak("Compress::Zlib needs zlib version 1.x\n") ; |
704 | |
705 | { |
642e522c |
706 | /* Create the $os_code scalar */ |
707 | SV * os_code_sv = perl_get_sv("Compress::Zlib::gzip_os_code", GV_ADDMULTI) ; |
708 | sv_setiv(os_code_sv, GZIP_OS_CODE) ; |
709 | } |
710 | |
711 | { |
f4c6fd49 |
712 | /* Create the $gzerror scalar */ |
713 | SV * gzerror_sv = perl_get_sv(GZERRNO, GV_ADDMULTI) ; |
714 | sv_setiv(gzerror_sv, 0) ; |
715 | sv_setpv(gzerror_sv, "") ; |
716 | SvIOK_on(gzerror_sv) ; |
717 | } |
718 | |
f4c6fd49 |
719 | #define Zip_zlib_version() (char*)zlib_version |
720 | char* |
721 | Zip_zlib_version() |
722 | |
06edba15 |
723 | unsigned |
724 | ZLIB_VERNUM() |
725 | CODE: |
726 | #ifdef ZLIB_VERNUM |
727 | RETVAL = ZLIB_VERNUM ; |
728 | #else |
729 | /* 1.1.4 => 0x1140 */ |
730 | RETVAL = (ZLIB_VERSION[0] - '0') << 12 ; |
731 | RETVAL += (ZLIB_VERSION[2] - '0') << 8 ; |
732 | RETVAL += (ZLIB_VERSION[4] - '0') << 4 ; |
733 | #endif |
734 | OUTPUT: |
735 | RETVAL |
736 | |
642e522c |
737 | MODULE = Compress::Zlib PACKAGE = Compress::Zlib PREFIX = Zip_ |
f4c6fd49 |
738 | |
642e522c |
739 | #define Zip_adler32(buf, adler) adler32(adler, buf, (uInt)len) |
f4c6fd49 |
740 | |
642e522c |
741 | uLong |
742 | Zip_adler32(buf, adler=adlerInitial) |
743 | uLong adler = NO_INIT |
744 | STRLEN len = NO_INIT |
745 | Bytef * buf = NO_INIT |
746 | SV * sv = ST(0) ; |
747 | INIT: |
748 | /* If the buffer is a reference, dereference it */ |
749 | sv = deRef(sv, "adler32") ; |
750 | #ifdef UTF8_AVAILABLE |
751 | if (DO_UTF8(sv) && !sv_utf8_downgrade(sv, 1)) |
752 | croak("Wide character in Compress::Zlib::adler32"); |
753 | #endif |
754 | buf = (Byte*)SvPVbyte(sv, len) ; |
f4c6fd49 |
755 | |
642e522c |
756 | if (items < 2) |
757 | adler = adlerInitial; |
758 | else if (SvOK(ST(1))) |
759 | adler = SvUV(ST(1)) ; |
760 | else |
761 | adler = adlerInitial; |
762 | |
763 | #define Zip_crc32(buf, crc) crc32(crc, buf, (uInt)len) |
f4c6fd49 |
764 | |
642e522c |
765 | uLong |
766 | Zip_crc32(buf, crc=crcInitial) |
767 | uLong crc = NO_INIT |
768 | STRLEN len = NO_INIT |
769 | Bytef * buf = NO_INIT |
770 | SV * sv = ST(0) ; |
771 | INIT: |
772 | /* If the buffer is a reference, dereference it */ |
773 | sv = deRef(sv, "crc32") ; |
774 | #ifdef UTF8_AVAILABLE |
775 | if (DO_UTF8(sv) && !sv_utf8_downgrade(sv, 1)) |
776 | croak("Wide character in Compress::Zlib::crc32"); |
777 | #endif |
778 | buf = (Byte*)SvPVbyte(sv, len) ; |
f4c6fd49 |
779 | |
642e522c |
780 | if (items < 2) |
781 | crc = crcInitial; |
782 | else if (SvOK(ST(1))) |
783 | crc = SvUV(ST(1)) ; |
784 | else |
785 | crc = crcInitial; |
f4c6fd49 |
786 | |
787 | |
642e522c |
788 | uLong |
789 | crc32_combine(crc1, crc2, len2) |
790 | uLong crc1 |
791 | uLong crc2 |
792 | z_off_t len2 |
f4c6fd49 |
793 | CODE: |
642e522c |
794 | #ifndef AT_LEAST_ZLIB_1_2_2_1 |
795 | crc1 = crc1; crc2 = crc2 ; len2 = len2; /* Silence -Wall */ |
796 | croak("crc32_combine needs zlib 1.2.3 or better"); |
f4c6fd49 |
797 | #else |
642e522c |
798 | RETVAL = crc32_combine(crc1, crc2, len2); |
f4c6fd49 |
799 | #endif |
642e522c |
800 | OUTPUT: |
801 | RETVAL |
f4c6fd49 |
802 | |
803 | |
642e522c |
804 | uLong |
805 | adler32_combine(adler1, adler2, len2) |
806 | uLong adler1 |
807 | uLong adler2 |
808 | z_off_t len2 |
f4c6fd49 |
809 | CODE: |
642e522c |
810 | #ifndef AT_LEAST_ZLIB_1_2_2_1 |
811 | adler1 = adler1; adler2 = adler2 ; len2 = len2; /* Silence -Wall */ |
812 | croak("adler32_combine needs zlib 1.2.3 or better"); |
f4c6fd49 |
813 | #else |
642e522c |
814 | RETVAL = adler32_combine(adler1, adler2, len2); |
f4c6fd49 |
815 | #endif |
642e522c |
816 | OUTPUT: |
817 | RETVAL |
f4c6fd49 |
818 | |
f4c6fd49 |
819 | |
820 | MODULE = Compress::Zlib PACKAGE = Compress::Zlib |
821 | |
822 | void |
642e522c |
823 | _deflateInit(flags,level, method, windowBits, memLevel, strategy, bufsize, dictionary) |
824 | int flags |
f4c6fd49 |
825 | int level |
826 | int method |
827 | int windowBits |
828 | int memLevel |
829 | int strategy |
830 | uLong bufsize |
642e522c |
831 | SV* dictionary |
f4c6fd49 |
832 | PPCODE: |
f4c6fd49 |
833 | int err ; |
834 | deflateStream s ; |
835 | |
836 | if (trace) |
642e522c |
837 | warn("in _deflateInit(level=%d, method=%d, windowBits=%d, memLevel=%d, strategy=%d, bufsize=%ld\n", |
f4c6fd49 |
838 | level, method, windowBits, memLevel, strategy, bufsize) ; |
642e522c |
839 | if ((s = InitStream() )) { |
f4c6fd49 |
840 | |
841 | s->Level = level; |
842 | s->Method = method; |
843 | s->WindowBits = windowBits; |
844 | s->MemLevel = memLevel; |
845 | s->Strategy = strategy; |
846 | |
847 | err = deflateInit2(&(s->stream), level, |
848 | method, windowBits, memLevel, strategy); |
849 | |
850 | /* Check if a dictionary has been specified */ |
642e522c |
851 | |
f4c6fd49 |
852 | if (err == Z_OK && SvCUR(dictionary)) { |
642e522c |
853 | #ifdef UTF8_AVAILABLE |
854 | if (DO_UTF8(dictionary) && !sv_utf8_downgrade(dictionary, 1)) |
855 | croak("Wide character in Compress::Zlib::Deflate::new dicrionary parameter"); |
856 | #endif |
857 | err = deflateSetDictionary(&(s->stream), (const Bytef*) SvPVbyte_nolen(dictionary), |
f4c6fd49 |
858 | SvCUR(dictionary)) ; |
859 | s->dict_adler = s->stream.adler ; |
860 | } |
861 | |
862 | if (err != Z_OK) { |
863 | Safefree(s) ; |
864 | s = NULL ; |
865 | } |
642e522c |
866 | else |
867 | PostInitStream(s, flags, bufsize, windowBits) ; |
f4c6fd49 |
868 | |
869 | } |
870 | else |
871 | err = Z_MEM_ERROR ; |
872 | |
873 | XPUSHs(sv_setref_pv(sv_newmortal(), |
874 | "Compress::Zlib::deflateStream", (void*)s)); |
642e522c |
875 | if (GIMME == G_ARRAY) { |
876 | SV * sv = sv_2mortal(newSViv(err)) ; |
877 | setDUALstatus(sv, err); |
878 | XPUSHs(sv) ; |
879 | } |
f4c6fd49 |
880 | |
881 | void |
642e522c |
882 | _inflateInit(flags, windowBits, bufsize, dictionary) |
883 | int flags |
f4c6fd49 |
884 | int windowBits |
885 | uLong bufsize |
886 | SV * dictionary |
642e522c |
887 | ALIAS: |
888 | _inflateScanInit = 1 |
f4c6fd49 |
889 | PPCODE: |
890 | |
891 | int err = Z_OK ; |
892 | inflateStream s ; |
642e522c |
893 | #ifndef MAGIC_APPEND |
894 | if (ix == 1) |
895 | croak("inflateScanInit needs zlib 1.2.1 or better"); |
896 | #endif |
f4c6fd49 |
897 | if (trace) |
642e522c |
898 | warn("in _inflateInit(windowBits=%d, bufsize=%lu, dictionary=%lu\n", |
899 | windowBits, bufsize, (unsigned long)SvCUR(dictionary)) ; |
900 | if ((s = InitStream() )) { |
f4c6fd49 |
901 | |
902 | s->WindowBits = windowBits; |
903 | |
904 | err = inflateInit2(&(s->stream), windowBits); |
f4c6fd49 |
905 | if (err != Z_OK) { |
906 | Safefree(s) ; |
907 | s = NULL ; |
908 | } |
909 | else if (SvCUR(dictionary)) { |
910 | /* Dictionary specified - take a copy for use in inflate */ |
911 | s->dictionary = newSVsv(dictionary) ; |
912 | } |
642e522c |
913 | if (s) { |
914 | PostInitStream(s, flags, bufsize, windowBits) ; |
915 | #ifdef MAGIC_APPEND |
916 | if (ix == 1) |
917 | { |
918 | s->window = (unsigned char *)safemalloc(WINDOW_SIZE); |
919 | } |
920 | #endif |
921 | } |
f4c6fd49 |
922 | } |
923 | else |
924 | err = Z_MEM_ERROR ; |
925 | |
926 | XPUSHs(sv_setref_pv(sv_newmortal(), |
642e522c |
927 | ix == 1 |
928 | ? "Compress::Zlib::inflateScanStream" |
929 | : "Compress::Zlib::inflateStream", |
930 | (void*)s)); |
931 | if (GIMME == G_ARRAY) { |
932 | SV * sv = sv_2mortal(newSViv(err)) ; |
933 | setDUALstatus(sv, err); |
934 | XPUSHs(sv) ; |
935 | } |
f4c6fd49 |
936 | |
937 | |
938 | |
939 | MODULE = Compress::Zlib PACKAGE = Compress::Zlib::deflateStream |
940 | |
941 | void |
942 | DispStream(s, message=NULL) |
642e522c |
943 | Compress::Zlib::deflateStream s |
944 | char * message |
945 | |
946 | DualType |
947 | deflateReset(s) |
948 | Compress::Zlib::deflateStream s |
949 | CODE: |
950 | RETVAL = deflateReset(&(s->stream)) ; |
951 | if (RETVAL == Z_OK) { |
952 | PostInitStream(s, s->flags, s->bufsize, s->WindowBits) ; |
953 | } |
954 | OUTPUT: |
955 | RETVAL |
f4c6fd49 |
956 | |
642e522c |
957 | DualType |
958 | deflate (s, buf, output) |
f4c6fd49 |
959 | Compress::Zlib::deflateStream s |
960 | SV * buf |
642e522c |
961 | SV * output |
962 | uInt cur_length = NO_INIT |
963 | uInt increment = NO_INIT |
1a6a8453 |
964 | uInt prefix = NO_INIT |
642e522c |
965 | int RETVAL = 0; |
966 | CODE: |
967 | |
968 | /* If the input buffer is a reference, dereference it */ |
f4c6fd49 |
969 | buf = deRef(buf, "deflate") ; |
970 | |
971 | /* initialise the input buffer */ |
642e522c |
972 | #ifdef UTF8_AVAILABLE |
973 | if (DO_UTF8(buf) && !sv_utf8_downgrade(buf, 1)) |
974 | croak("Wide character in Compress::Zlib::Deflate::deflate input parameter"); |
975 | #endif |
d13b0db4 |
976 | s->stream.next_in = (Bytef*)SvPVbyte_nolen(buf) ; |
1a6a8453 |
977 | s->stream.avail_in = SvCUR(buf) ; |
642e522c |
978 | |
979 | if (s->flags & FLAG_CRC32) |
980 | s->crc32 = crc32(s->crc32, s->stream.next_in, s->stream.avail_in) ; |
981 | |
982 | if (s->flags & FLAG_ADLER32) |
983 | s->adler32 = adler32(s->adler32, s->stream.next_in, s->stream.avail_in) ; |
984 | |
985 | /* and retrieve the output buffer */ |
986 | output = deRef_l(output, "deflate") ; |
987 | #ifdef UTF8_AVAILABLE |
988 | if (DO_UTF8(output) && !sv_utf8_downgrade(output, 1)) |
989 | croak("Wide character in Compress::Zlib::Deflate::deflate output parameter"); |
990 | #endif |
991 | |
992 | if((s->flags & FLAG_APPEND) != FLAG_APPEND) { |
993 | SvCUR_set(output, 0); |
994 | /* sv_setpvn(output, "", 0); */ |
995 | } |
1a6a8453 |
996 | prefix = cur_length = SvCUR(output) ; |
642e522c |
997 | s->stream.next_out = (Bytef*) SvPVbyte_nolen(output) + cur_length; |
998 | increment = SvLEN(output) - cur_length; |
999 | s->stream.avail_out = increment; |
1000 | #ifdef SETP_BYTE |
f4c6fd49 |
1001 | /* Check for saved output from deflateParams */ |
1002 | if (s->deflateParams_out_valid) { |
1003 | *(s->stream.next_out) = s->deflateParams_out_byte; |
1004 | ++ s->stream.next_out; |
1005 | -- s->stream.avail_out ; |
1006 | s->deflateParams_out_valid = FALSE; |
1007 | } |
642e522c |
1008 | #else |
1009 | /* Check for saved output from deflateParams */ |
1010 | if (s->deflateParams_out_length) { |
1011 | uLong plen = s->deflateParams_out_length ; |
1012 | /* printf("Copy %d bytes saved data\n", plen);*/ |
1013 | if (s->stream.avail_out < plen) { |
1014 | /*printf("GROW from %d to %d\n", s->stream.avail_out, |
1015 | SvLEN(output) + plen - s->stream.avail_out); */ |
1016 | Sv_Grow(output, SvLEN(output) + plen - s->stream.avail_out) ; |
1017 | } |
1018 | |
1019 | Copy(s->stream.next_out, s->deflateParams_out_buffer, plen, Bytef) ; |
1020 | cur_length = cur_length + plen; |
1021 | SvCUR_set(output, cur_length); |
1022 | s->stream.next_out += plen ; |
1023 | s->stream.avail_out = SvLEN(output) - cur_length ; |
1024 | increment = s->stream.avail_out; |
1025 | s->deflateParams_out_length = 0; |
1026 | } |
1027 | #endif |
f4c6fd49 |
1028 | while (s->stream.avail_in != 0) { |
1029 | |
1030 | if (s->stream.avail_out == 0) { |
642e522c |
1031 | /* out of space in the output buffer so make it bigger */ |
642e522c |
1032 | Sv_Grow(output, SvLEN(output) + s->bufinc) ; |
1033 | cur_length += increment ; |
1034 | s->stream.next_out = (Bytef*) SvPVbyte_nolen(output) + cur_length ; |
1035 | increment = s->bufinc ; |
1036 | s->stream.avail_out = increment; |
6f5df6bc |
1037 | s->bufinc *= 2 ; |
f4c6fd49 |
1038 | } |
642e522c |
1039 | |
1040 | RETVAL = deflate(&(s->stream), Z_NO_FLUSH); |
1041 | if (RETVAL != Z_OK) |
f4c6fd49 |
1042 | break; |
1043 | } |
1044 | |
1a6a8453 |
1045 | s->compressedBytes += cur_length + increment - prefix - s->stream.avail_out ; |
1046 | s->uncompressedBytes += SvCUR(buf) - s->stream.avail_in ; |
1047 | |
642e522c |
1048 | s->last_error = RETVAL ; |
1049 | if (RETVAL == Z_OK) { |
f4c6fd49 |
1050 | SvPOK_only(output); |
642e522c |
1051 | SvCUR_set(output, cur_length + increment - s->stream.avail_out) ; |
f4c6fd49 |
1052 | } |
642e522c |
1053 | OUTPUT: |
1054 | RETVAL |
1055 | output |
f4c6fd49 |
1056 | |
1057 | |
f4c6fd49 |
1058 | void |
642e522c |
1059 | DESTROY(s) |
f4c6fd49 |
1060 | Compress::Zlib::deflateStream s |
642e522c |
1061 | CODE: |
1062 | deflateEnd(&s->stream) ; |
1063 | if (s->dictionary) |
1064 | SvREFCNT_dec(s->dictionary) ; |
1065 | #ifndef SETP_BYTE |
1066 | if (s->deflateParams_out_buffer) |
1067 | Safefree(s->deflateParams_out_buffer); |
1068 | #endif |
1069 | Safefree(s) ; |
1070 | |
1071 | |
1072 | DualType |
1073 | flush(s, output, f=Z_FINISH) |
1074 | Compress::Zlib::deflateStream s |
1075 | SV * output |
1076 | int f |
1077 | uInt cur_length = NO_INIT |
1078 | uInt increment = NO_INIT |
1a6a8453 |
1079 | uInt prefix = NO_INIT |
642e522c |
1080 | CODE: |
f4c6fd49 |
1081 | |
1082 | s->stream.avail_in = 0; /* should be zero already anyway */ |
1083 | |
642e522c |
1084 | /* retrieve the output buffer */ |
1085 | output = deRef_l(output, "flush") ; |
1086 | #ifdef UTF8_AVAILABLE |
1087 | if (DO_UTF8(output) && !sv_utf8_downgrade(output, 1)) |
1088 | croak("Wide character in Compress::Zlib::Deflate::flush input parameter"); |
1089 | #endif |
1090 | if(! s->flags & FLAG_APPEND) { |
1091 | SvCUR_set(output, 0); |
1092 | /* sv_setpvn(output, "", 0); */ |
1093 | } |
1a6a8453 |
1094 | prefix = cur_length = SvCUR(output) ; |
642e522c |
1095 | s->stream.next_out = (Bytef*) SvPVbyte_nolen(output) + cur_length; |
1096 | increment = SvLEN(output) - cur_length; |
1097 | s->stream.avail_out = increment; |
1098 | #ifdef SETP_BYTE |
f4c6fd49 |
1099 | /* Check for saved output from deflateParams */ |
1100 | if (s->deflateParams_out_valid) { |
1101 | *(s->stream.next_out) = s->deflateParams_out_byte; |
1102 | ++ s->stream.next_out; |
1103 | -- s->stream.avail_out ; |
1104 | s->deflateParams_out_valid = FALSE; |
1105 | } |
642e522c |
1106 | #else |
1107 | /* Check for saved output from deflateParams */ |
1108 | if (s->deflateParams_out_length) { |
1109 | uLong plen = s->deflateParams_out_length ; |
1110 | /* printf("Copy %d bytes saved data\n", plen); */ |
1111 | if (s->stream.avail_out < plen) { |
1112 | /* printf("GROW from %d to %d\n", s->stream.avail_out, |
1113 | SvLEN(output) + plen - s->stream.avail_out); */ |
1114 | Sv_Grow(output, SvLEN(output) + plen - s->stream.avail_out) ; |
1115 | } |
1116 | |
1117 | Copy(s->stream.next_out, s->deflateParams_out_buffer, plen, Bytef) ; |
1118 | cur_length = cur_length + plen; |
1119 | SvCUR_set(output, cur_length); |
1120 | s->stream.next_out += plen ; |
1121 | s->stream.avail_out = SvLEN(output) - cur_length ; |
1122 | increment = s->stream.avail_out; |
1123 | s->deflateParams_out_length = 0; |
1124 | } |
1125 | #endif |
f4c6fd49 |
1126 | |
1127 | for (;;) { |
1128 | if (s->stream.avail_out == 0) { |
1129 | /* consumed all the available output, so extend it */ |
642e522c |
1130 | Sv_Grow(output, SvLEN(output) + s->bufinc) ; |
1131 | cur_length += increment ; |
1132 | s->stream.next_out = (Bytef*) SvPVbyte_nolen(output) + cur_length ; |
1133 | increment = s->bufinc ; |
1134 | s->stream.avail_out = increment; |
6f5df6bc |
1135 | s->bufinc *= 2 ; |
f4c6fd49 |
1136 | } |
642e522c |
1137 | RETVAL = deflate(&(s->stream), f); |
f4c6fd49 |
1138 | |
1139 | /* deflate has finished flushing only when it hasn't used up |
1140 | * all the available space in the output buffer: |
1141 | */ |
642e522c |
1142 | if (s->stream.avail_out != 0 || RETVAL != Z_OK ) |
f4c6fd49 |
1143 | break; |
1144 | } |
1145 | |
642e522c |
1146 | RETVAL = (RETVAL == Z_STREAM_END ? Z_OK : RETVAL) ; |
1147 | s->last_error = RETVAL ; |
1a6a8453 |
1148 | |
1149 | s->compressedBytes += cur_length + increment - prefix - s->stream.avail_out ; |
f4c6fd49 |
1150 | |
642e522c |
1151 | if (RETVAL == Z_OK) { |
f4c6fd49 |
1152 | SvPOK_only(output); |
642e522c |
1153 | SvCUR_set(output, cur_length + increment - s->stream.avail_out) ; |
f4c6fd49 |
1154 | } |
642e522c |
1155 | OUTPUT: |
1156 | RETVAL |
1157 | output |
f4c6fd49 |
1158 | |
642e522c |
1159 | |
1160 | DualType |
f4c6fd49 |
1161 | _deflateParams(s, flags, level, strategy, bufsize) |
1162 | Compress::Zlib::deflateStream s |
1163 | int flags |
1164 | int level |
1165 | int strategy |
1166 | uLong bufsize |
1167 | CODE: |
642e522c |
1168 | /* printf("_deflateParams(Flags %d Level %d Strategy %d Bufsize %d)\n", flags, level, strategy, bufsize); |
1169 | printf("Before -- Level %d, Strategy %d, Bufsize %d\n", s->Level, s->Strategy, s->bufsize); */ |
f4c6fd49 |
1170 | if (flags & 1) |
1171 | s->Level = level ; |
1172 | if (flags & 2) |
1173 | s->Strategy = strategy ; |
642e522c |
1174 | if (flags & 4) { |
f4c6fd49 |
1175 | s->bufsize = bufsize; |
1176 | s->bufinc = bufsize; |
1177 | } |
642e522c |
1178 | /* printf("After -- Level %d, Strategy %d, Bufsize %d\n", s->Level, s->Strategy, s->bufsize);*/ |
1179 | #ifdef SETP_BYTE |
f4c6fd49 |
1180 | s->stream.avail_in = 0; |
1181 | s->stream.next_out = &(s->deflateParams_out_byte) ; |
1182 | s->stream.avail_out = 1; |
1183 | RETVAL = deflateParams(&(s->stream), s->Level, s->Strategy); |
1184 | s->deflateParams_out_valid = |
1185 | (RETVAL == Z_OK && s->stream.avail_out == 0) ; |
642e522c |
1186 | /* printf("RETVAL %d, avail out %d, byte %c\n", RETVAL, s->stream.avail_out, s->deflateParams_out_byte); */ |
1187 | #else |
1188 | /* printf("Level %d Strategy %d, Prev Len %d\n", |
1189 | s->Level, s->Strategy, s->deflateParams_out_length); */ |
1190 | s->stream.avail_in = 0; |
1191 | if (s->deflateParams_out_buffer == NULL) |
1192 | s->deflateParams_out_buffer = safemalloc(deflateParams_BUFFER_SIZE); |
1193 | s->stream.next_out = s->deflateParams_out_buffer ; |
1194 | s->stream.avail_out = deflateParams_BUFFER_SIZE; |
1195 | |
1196 | RETVAL = deflateParams(&(s->stream), s->Level, s->Strategy); |
1197 | s->deflateParams_out_length = deflateParams_BUFFER_SIZE - s->stream.avail_out; |
1198 | /* printf("RETVAL %d, length out %d, avail %d\n", |
1199 | RETVAL, s->deflateParams_out_length, s->stream.avail_out ); */ |
1200 | #endif |
f4c6fd49 |
1201 | OUTPUT: |
1202 | RETVAL |
1203 | |
1204 | |
1205 | int |
1206 | get_Level(s) |
1207 | Compress::Zlib::deflateStream s |
1208 | CODE: |
1209 | RETVAL = s->Level ; |
1210 | OUTPUT: |
1211 | RETVAL |
1212 | |
1213 | int |
1214 | get_Strategy(s) |
1215 | Compress::Zlib::deflateStream s |
1216 | CODE: |
1217 | RETVAL = s->Strategy ; |
1218 | OUTPUT: |
1219 | RETVAL |
1220 | |
642e522c |
1221 | |
1222 | uLong |
1223 | get_Bufsize(s) |
1224 | Compress::Zlib::deflateStream s |
1225 | CODE: |
1226 | RETVAL = s->bufsize ; |
1227 | OUTPUT: |
1228 | RETVAL |
f4c6fd49 |
1229 | |
1230 | |
642e522c |
1231 | int |
1232 | status(s) |
1233 | Compress::Zlib::deflateStream s |
1234 | CODE: |
1235 | RETVAL = s->last_error ; |
1236 | OUTPUT: |
1237 | RETVAL |
1238 | |
1239 | uLong |
1240 | crc32(s) |
1241 | Compress::Zlib::deflateStream s |
1242 | CODE: |
1243 | RETVAL = s->crc32 ; |
1244 | OUTPUT: |
1245 | RETVAL |
1246 | |
f4c6fd49 |
1247 | uLong |
1248 | dict_adler(s) |
1249 | Compress::Zlib::deflateStream s |
1250 | CODE: |
1251 | RETVAL = s->dict_adler ; |
1252 | OUTPUT: |
1253 | RETVAL |
1254 | |
1255 | uLong |
642e522c |
1256 | adler32(s) |
1257 | Compress::Zlib::deflateStream s |
1258 | CODE: |
1259 | RETVAL = s->adler32 ; |
1260 | OUTPUT: |
1261 | RETVAL |
1262 | |
1263 | uLong |
1a6a8453 |
1264 | compressedBytes(s) |
1265 | Compress::Zlib::deflateStream s |
1266 | CODE: |
1267 | RETVAL = s->compressedBytes; |
1268 | OUTPUT: |
1269 | RETVAL |
1270 | |
1271 | uLong |
1272 | uncompressedBytes(s) |
1273 | Compress::Zlib::deflateStream s |
1274 | CODE: |
1275 | RETVAL = s->uncompressedBytes; |
1276 | OUTPUT: |
1277 | RETVAL |
1278 | |
1279 | uLong |
f4c6fd49 |
1280 | total_in(s) |
1281 | Compress::Zlib::deflateStream s |
1282 | CODE: |
642e522c |
1283 | RETVAL = s->stream.total_in ; |
f4c6fd49 |
1284 | OUTPUT: |
1285 | RETVAL |
1286 | |
1287 | uLong |
1288 | total_out(s) |
1289 | Compress::Zlib::deflateStream s |
1290 | CODE: |
642e522c |
1291 | RETVAL = s->stream.total_out ; |
f4c6fd49 |
1292 | OUTPUT: |
1293 | RETVAL |
1294 | |
1295 | char* |
1296 | msg(s) |
1297 | Compress::Zlib::deflateStream s |
1298 | CODE: |
642e522c |
1299 | RETVAL = s->stream.msg; |
f4c6fd49 |
1300 | OUTPUT: |
1301 | RETVAL |
1302 | |
642e522c |
1303 | int |
1304 | deflateTune(s, good_length, max_lazy, nice_length, max_chain) |
1305 | Compress::Zlib::deflateStream s |
1306 | int good_length |
1307 | int max_lazy |
1308 | int nice_length |
1309 | int max_chain |
1310 | CODE: |
1311 | #ifndef AT_LEAST_ZLIB_1_2_2_3 |
1312 | good_length = good_length; max_lazy = max_lazy ; /* Silence -Wall */ |
1313 | nice_length = nice_length; max_chain = max_chain; /* Silence -Wall */ |
1314 | croak("deflateTune needs zlib 1.2.2.3 or better"); |
1315 | #else |
1316 | RETVAL = deflateTune(&(s->stream), good_length, max_lazy, nice_length, max_chain); |
1317 | #endif |
1318 | OUTPUT: |
1319 | RETVAL |
1320 | |
f4c6fd49 |
1321 | |
1322 | MODULE = Compress::Zlib PACKAGE = Compress::Zlib::inflateStream |
1323 | |
1324 | void |
1325 | DispStream(s, message=NULL) |
642e522c |
1326 | Compress::Zlib::inflateStream s |
1327 | char * message |
f4c6fd49 |
1328 | |
642e522c |
1329 | DualType |
1330 | inflateReset(s) |
1331 | Compress::Zlib::inflateStream s |
1332 | CODE: |
1333 | RETVAL = inflateReset(&(s->stream)) ; |
1334 | if (RETVAL == Z_OK) { |
1335 | PostInitStream(s, s->flags, s->bufsize, s->WindowBits) ; |
1336 | } |
1337 | OUTPUT: |
1338 | RETVAL |
1339 | |
1340 | DualType |
1a6a8453 |
1341 | inflate (s, buf, output, eof=FALSE) |
f4c6fd49 |
1342 | Compress::Zlib::inflateStream s |
1343 | SV * buf |
642e522c |
1344 | SV * output |
1a6a8453 |
1345 | bool eof |
6f5df6bc |
1346 | uInt cur_length = 0; |
1347 | uInt prefix_length = 0; |
1348 | uInt increment = 0; |
1a6a8453 |
1349 | STRLEN stmp = NO_INIT |
642e522c |
1350 | PREINIT: |
1351 | #ifdef UTF8_AVAILABLE |
1352 | bool out_utf8 = FALSE; |
1353 | #endif |
1354 | CODE: |
f4c6fd49 |
1355 | /* If the buffer is a reference, dereference it */ |
1356 | buf = deRef(buf, "inflate") ; |
642e522c |
1357 | |
1358 | if (s->flags & FLAG_CONSUME_INPUT && SvREADONLY(buf)) |
1359 | croak("Compress::Zlib::Inflate::inflate input parameter cannot be read-only when ConsumeInput is specified"); |
1360 | #ifdef UTF8_AVAILABLE |
1361 | if (DO_UTF8(buf) && !sv_utf8_downgrade(buf, 1)) |
1362 | croak("Wide character in Compress::Zlib::Inflate::inflate input parameter"); |
1363 | #endif |
f4c6fd49 |
1364 | |
1365 | /* initialise the input buffer */ |
d13b0db4 |
1366 | s->stream.next_in = (Bytef*)SvPVbyte_force(buf, stmp) ; |
1a6a8453 |
1367 | s->stream.avail_in = SvCUR(buf) ; |
f4c6fd49 |
1368 | |
642e522c |
1369 | /* and retrieve the output buffer */ |
1370 | output = deRef_l(output, "inflate") ; |
1371 | #ifdef UTF8_AVAILABLE |
1372 | if (DO_UTF8(output)) |
1373 | out_utf8 = TRUE ; |
1374 | if (DO_UTF8(output) && !sv_utf8_downgrade(output, 1)) |
1375 | croak("Wide character in Compress::Zlib::Inflate::inflate output parameter"); |
1376 | #endif |
1377 | if((s->flags & FLAG_APPEND) != FLAG_APPEND) { |
1378 | SvCUR_set(output, 0); |
1379 | } |
6f5df6bc |
1380 | if (SvLEN(output)) { |
1381 | prefix_length = cur_length = SvCUR(output) ; |
1382 | s->stream.next_out = (Bytef*) SvPVbyte_nolen(output) + cur_length; |
1383 | increment = SvLEN(output) - cur_length - 1; |
1384 | s->stream.avail_out = increment; |
1385 | } |
1386 | else { |
1387 | s->stream.avail_out = 0; |
1388 | } |
642e522c |
1389 | s->bytesInflated = 0; |
1390 | |
f4c6fd49 |
1391 | while (1) { |
1392 | |
1393 | if (s->stream.avail_out == 0) { |
642e522c |
1394 | /* out of space in the output buffer so make it bigger */ |
6f5df6bc |
1395 | Sv_Grow(output, SvLEN(output) + s->bufinc) ; |
642e522c |
1396 | cur_length += increment ; |
1397 | s->stream.next_out = (Bytef*) SvPVbyte_nolen(output) + cur_length ; |
1398 | increment = s->bufinc ; |
1399 | s->stream.avail_out = increment; |
6f5df6bc |
1400 | s->bufinc *= 2 ; |
f4c6fd49 |
1401 | } |
1402 | |
642e522c |
1403 | RETVAL = inflate(&(s->stream), Z_SYNC_FLUSH); |
f4c6fd49 |
1404 | |
1a6a8453 |
1405 | if (RETVAL == Z_STREAM_ERROR || RETVAL == Z_MEM_ERROR || |
1406 | RETVAL == Z_DATA_ERROR || RETVAL == Z_STREAM_END ) |
1407 | break ; |
642e522c |
1408 | |
1409 | if (RETVAL == Z_BUF_ERROR) { |
1410 | if (s->stream.avail_out == 0) |
1411 | continue ; |
1412 | if (s->stream.avail_in == 0) { |
1413 | RETVAL = Z_OK ; |
1414 | break ; |
1415 | } |
1416 | } |
1417 | |
1418 | if (RETVAL == Z_NEED_DICT && s->dictionary) { |
1419 | s->dict_adler = s->stream.adler ; |
1420 | RETVAL = inflateSetDictionary(&(s->stream), |
1421 | (const Bytef*)SvPVbyte_nolen(s->dictionary), |
1422 | SvCUR(s->dictionary)); |
1423 | } |
1424 | |
1425 | if (RETVAL != Z_OK) |
f4c6fd49 |
1426 | break; |
1427 | } |
1a6a8453 |
1428 | #ifdef NEED_DUMMY_BYTE_AT_END |
1429 | if (eof && RETVAL == Z_OK) { |
1430 | Bytef* nextIn = s->stream.next_in; |
1431 | uInt availIn = s->stream.avail_in; |
1432 | s->stream.next_in = (Bytef*) " "; |
1433 | s->stream.avail_in = 1; |
1434 | if (s->stream.avail_out == 0) { |
1435 | /* out of space in the output buffer so make it bigger */ |
1436 | Sv_Grow(output, SvLEN(output) + s->bufinc) ; |
1437 | cur_length += increment ; |
1438 | s->stream.next_out = (Bytef*) SvPVbyte_nolen(output) + cur_length ; |
1439 | increment = s->bufinc ; |
1440 | s->stream.avail_out = increment; |
1441 | s->bufinc *= 2 ; |
1442 | } |
1443 | RETVAL = inflate(&(s->stream), Z_SYNC_FLUSH); |
1444 | s->stream.next_in = nextIn ; |
1445 | s->stream.avail_in = availIn ; |
1446 | } |
1447 | #endif |
1448 | |
642e522c |
1449 | s->last_error = RETVAL ; |
1450 | if (RETVAL == Z_OK || RETVAL == Z_STREAM_END || RETVAL == Z_DATA_ERROR) { |
f4c6fd49 |
1451 | unsigned in ; |
642e522c |
1452 | |
1453 | s->bytesInflated = cur_length + increment - s->stream.avail_out - prefix_length; |
1a6a8453 |
1454 | s->uncompressedBytes += s->bytesInflated ; |
1455 | s->compressedBytes += SvCUR(buf) - s->stream.avail_in ; |
1456 | |
f4c6fd49 |
1457 | SvPOK_only(output); |
642e522c |
1458 | SvCUR_set(output, prefix_length + s->bytesInflated) ; |
1459 | *SvEND(output) = '\0'; |
1460 | #ifdef UTF8_AVAILABLE |
1461 | if (out_utf8) |
1462 | sv_utf8_upgrade(output); |
1463 | #endif |
1464 | |
1465 | if (s->flags & FLAG_CRC32 ) |
1466 | s->crc32 = crc32(s->crc32, |
1467 | (const Bytef*)SvPVbyte_nolen(output)+prefix_length, |
1468 | SvCUR(output)-prefix_length) ; |
1469 | |
1470 | if (s->flags & FLAG_ADLER32) |
1471 | s->adler32 = adler32(s->adler32, |
1472 | (const Bytef*)SvPVbyte_nolen(output)+prefix_length, |
1473 | SvCUR(output)-prefix_length) ; |
1474 | |
1475 | /* fix the input buffer */ |
1476 | if (s->flags & FLAG_CONSUME_INPUT) { |
1477 | in = s->stream.avail_in ; |
1478 | SvCUR_set(buf, in) ; |
1479 | if (in) |
1480 | Move(s->stream.next_in, SvPVbyte_nolen(buf), in, char) ; |
f4c6fd49 |
1481 | *SvEND(buf) = '\0'; |
1482 | SvSETMAGIC(buf); |
1483 | } |
1484 | } |
642e522c |
1485 | OUTPUT: |
1486 | RETVAL |
1487 | buf |
1488 | output |
f4c6fd49 |
1489 | |
642e522c |
1490 | uLong |
1491 | inflateCount(s) |
1492 | Compress::Zlib::inflateStream s |
1493 | CODE: |
1494 | RETVAL = s->bytesInflated; |
1495 | OUTPUT: |
1496 | RETVAL |
1497 | |
1a6a8453 |
1498 | uLong |
1499 | compressedBytes(s) |
1500 | Compress::Zlib::inflateStream s |
1501 | CODE: |
1502 | RETVAL = s->compressedBytes; |
1503 | OUTPUT: |
1504 | RETVAL |
1505 | |
1506 | uLong |
1507 | uncompressedBytes(s) |
1508 | Compress::Zlib::inflateStream s |
1509 | CODE: |
1510 | RETVAL = s->uncompressedBytes; |
1511 | OUTPUT: |
1512 | RETVAL |
1513 | |
642e522c |
1514 | |
1515 | DualType |
f4c6fd49 |
1516 | inflateSync (s, buf) |
1517 | Compress::Zlib::inflateStream s |
1518 | SV * buf |
1519 | CODE: |
1520 | |
1521 | /* If the buffer is a reference, dereference it */ |
1522 | buf = deRef(buf, "inflateSync") ; |
642e522c |
1523 | #ifdef UTF8_AVAILABLE |
1524 | if (DO_UTF8(buf) && !sv_utf8_downgrade(buf, 1)) |
1525 | croak("Wide character in Compress::Zlib::Inflate::inflateSync"); |
1526 | #endif |
f4c6fd49 |
1527 | |
1528 | /* initialise the input buffer */ |
642e522c |
1529 | s->stream.next_in = (Bytef*)SvPVbyte_nolen(buf) ; |
f4c6fd49 |
1530 | s->stream.avail_in = SvCUR(buf) ; |
1531 | |
1532 | /* inflateSync doesn't create any output */ |
1533 | s->stream.next_out = (Bytef*) NULL; |
1534 | s->stream.avail_out = 0; |
1535 | |
1536 | RETVAL = inflateSync(&(s->stream)); |
642e522c |
1537 | s->last_error = RETVAL ; |
1538 | |
1539 | /* fix the input buffer */ |
f4c6fd49 |
1540 | { |
f4c6fd49 |
1541 | unsigned in = s->stream.avail_in ; |
f4c6fd49 |
1542 | SvCUR_set(buf, in) ; |
1543 | if (in) |
642e522c |
1544 | Move(s->stream.next_in, SvPVbyte_nolen(buf), in, char) ; |
f4c6fd49 |
1545 | *SvEND(buf) = '\0'; |
1546 | SvSETMAGIC(buf); |
1547 | } |
1548 | OUTPUT: |
1549 | RETVAL |
642e522c |
1550 | buf |
f4c6fd49 |
1551 | |
1552 | void |
1553 | DESTROY(s) |
1554 | Compress::Zlib::inflateStream s |
1555 | CODE: |
1556 | inflateEnd(&s->stream) ; |
1557 | if (s->dictionary) |
1558 | SvREFCNT_dec(s->dictionary) ; |
642e522c |
1559 | #ifndef SETP_BYTE |
1560 | if (s->deflateParams_out_buffer) |
1561 | Safefree(s->deflateParams_out_buffer); |
1562 | #endif |
1563 | #ifdef MAGIC_APPEND |
1564 | if (s->window) |
1565 | Safefree(s->window); |
1566 | #endif |
f4c6fd49 |
1567 | Safefree(s) ; |
1568 | |
1569 | |
1570 | uLong |
642e522c |
1571 | status(s) |
1572 | Compress::Zlib::inflateStream s |
1573 | CODE: |
1574 | RETVAL = s->last_error ; |
1575 | OUTPUT: |
1576 | RETVAL |
1577 | |
1578 | uLong |
1579 | crc32(s) |
1580 | Compress::Zlib::inflateStream s |
1581 | CODE: |
1582 | RETVAL = s->crc32 ; |
1583 | OUTPUT: |
1584 | RETVAL |
1585 | |
1586 | uLong |
f4c6fd49 |
1587 | dict_adler(s) |
1588 | Compress::Zlib::inflateStream s |
1589 | CODE: |
1590 | RETVAL = s->dict_adler ; |
1591 | OUTPUT: |
1592 | RETVAL |
1593 | |
1594 | uLong |
1595 | total_in(s) |
1596 | Compress::Zlib::inflateStream s |
1597 | CODE: |
642e522c |
1598 | RETVAL = s->stream.total_in ; |
1599 | OUTPUT: |
1600 | RETVAL |
1601 | |
1602 | uLong |
1603 | adler32(s) |
1604 | Compress::Zlib::inflateStream s |
1605 | CODE: |
1606 | RETVAL = s->adler32 ; |
f4c6fd49 |
1607 | OUTPUT: |
1608 | RETVAL |
1609 | |
1610 | uLong |
1611 | total_out(s) |
1612 | Compress::Zlib::inflateStream s |
1613 | CODE: |
642e522c |
1614 | RETVAL = s->stream.total_out ; |
f4c6fd49 |
1615 | OUTPUT: |
1616 | RETVAL |
1617 | |
1618 | char* |
1619 | msg(s) |
1620 | Compress::Zlib::inflateStream s |
1621 | CODE: |
642e522c |
1622 | RETVAL = s->stream.msg; |
f4c6fd49 |
1623 | OUTPUT: |
1624 | RETVAL |
1625 | |
1626 | |
642e522c |
1627 | uLong |
1628 | get_Bufsize(s) |
1629 | Compress::Zlib::inflateStream s |
1630 | CODE: |
1631 | RETVAL = s->bufsize ; |
1632 | OUTPUT: |
1633 | RETVAL |
1634 | |
1635 | bool |
1636 | set_Append(s, mode) |
1637 | Compress::Zlib::inflateStream s |
1638 | bool mode |
1639 | CODE: |
1640 | RETVAL = ((s->flags & FLAG_APPEND) == FLAG_APPEND); |
1641 | if (mode) |
1642 | s->flags |= FLAG_APPEND ; |
1643 | else |
1644 | s->flags &= ~FLAG_APPEND ; |
1645 | OUTPUT: |
1646 | RETVAL |
1647 | |
1648 | MODULE = Compress::Zlib PACKAGE = Compress::Zlib::inflateScanStream |
1649 | |
1650 | void |
1651 | DESTROY(s) |
1652 | Compress::Zlib::inflateScanStream s |
1653 | CODE: |
1654 | inflateEnd(&s->stream) ; |
1655 | if (s->dictionary) |
1656 | SvREFCNT_dec(s->dictionary) ; |
1657 | #ifndef SETP_BYTE |
1658 | if (s->deflateParams_out_buffer) |
1659 | Safefree(s->deflateParams_out_buffer); |
1660 | #endif |
1661 | #ifdef MAGIC_APPEND |
1662 | if (s->window) |
1663 | Safefree(s->window); |
1664 | #endif |
1665 | Safefree(s) ; |
1666 | |
1667 | void |
1668 | DispStream(s, message=NULL) |
1669 | Compress::Zlib::inflateScanStream s |
1670 | char * message |
1671 | |
1a6a8453 |
1672 | DualType |
1673 | inflateReset(s) |
1674 | Compress::Zlib::inflateScanStream s |
1675 | CODE: |
1676 | RETVAL = inflateReset(&(s->stream)) ; |
1677 | if (RETVAL == Z_OK) { |
1678 | PostInitStream(s, s->flags, s->bufsize, s->WindowBits) ; |
1679 | } |
1680 | OUTPUT: |
1681 | RETVAL |
1682 | |
642e522c |
1683 | DualType |
1a6a8453 |
1684 | scan(s, buf, out=NULL, eof=FALSE) |
642e522c |
1685 | Compress::Zlib::inflateScanStream s |
1686 | SV * buf |
1687 | SV * out |
1a6a8453 |
1688 | bool eof |
1689 | bool eof_mode = FALSE; |
642e522c |
1690 | int start_len = NO_INIT |
1a6a8453 |
1691 | STRLEN stmp = NO_INIT |
642e522c |
1692 | CODE: |
1693 | /* If the input buffer is a reference, dereference it */ |
642e522c |
1694 | #ifndef MAGIC_APPEND |
1695 | buf = buf; |
1696 | croak("scan needs zlib 1.2.1 or better"); |
1697 | #else |
1698 | buf = deRef(buf, "inflateScan") ; |
1699 | #ifdef UTF8_AVAILABLE |
1700 | if (DO_UTF8(buf) && !sv_utf8_downgrade(buf, 1)) |
1701 | croak("Wide character in Compress::Zlib::InflateScan::scan input parameter"); |
1702 | #endif |
642e522c |
1703 | /* initialise the input buffer */ |
d13b0db4 |
1704 | s->stream.next_in = (Bytef*)SvPVbyte_force(buf, stmp) ; |
1a6a8453 |
1705 | s->stream.avail_in = SvCUR(buf) ; |
642e522c |
1706 | start_len = s->stream.avail_in ; |
1707 | s->bytesInflated = 0 ; |
1708 | do |
1709 | { |
1710 | if (s->stream.avail_in == 0) { |
1711 | RETVAL = Z_OK ; |
1712 | break ; |
1713 | } |
1714 | |
1715 | /* set up output to next available section of sliding window */ |
1716 | s->stream.avail_out = WINDOW_SIZE - s->window_have; |
1717 | s->stream.next_out = s->window + s->window_have; |
1718 | |
1719 | /* DispStream(s, "before inflate\n"); */ |
1720 | |
1721 | /* inflate and check for errors */ |
1722 | RETVAL = inflate(&(s->stream), Z_BLOCK); |
1723 | |
1a6a8453 |
1724 | if (start_len > 1 && ! eof_mode) |
642e522c |
1725 | s->window_lastByte = *(s->stream.next_in - 1 ) ; |
1726 | |
1727 | if (RETVAL == Z_STREAM_ERROR || RETVAL == Z_MEM_ERROR || |
1728 | RETVAL == Z_DATA_ERROR ) |
1729 | break ; |
1730 | |
1731 | if (s->flags & FLAG_CRC32 ) |
1732 | s->crc32 = crc32(s->crc32, s->window + s->window_have, |
1733 | WINDOW_SIZE - s->window_have - s->stream.avail_out); |
1734 | |
1735 | if (s->flags & FLAG_ADLER32) |
1736 | s->adler32 = adler32(s->adler32, s->window + s->window_have, |
1737 | WINDOW_SIZE - s->window_have - s->stream.avail_out); |
1738 | |
1a6a8453 |
1739 | s->uncompressedBytes = |
642e522c |
1740 | s->bytesInflated += WINDOW_SIZE - s->window_have - s->stream.avail_out; |
1741 | |
1742 | if (s->stream.avail_out) |
1743 | s->window_have = WINDOW_SIZE - s->stream.avail_out; |
1744 | else { |
1745 | s->window_have = 0; |
1746 | s->window_full = 1; |
1747 | } |
1748 | |
1749 | /* process end of block */ |
1750 | if (s->stream.data_type & 128) { |
1751 | if (s->stream.data_type & 64) { |
1752 | s->window_left = s->stream.data_type & 0x1f; |
1753 | } |
1754 | else { |
1755 | s->window_lastbit = s->stream.data_type & 0x1f; |
1756 | s->lastBlockOffset = s->stream.total_in; |
1757 | } |
1758 | } |
1759 | |
1760 | } while (RETVAL != Z_STREAM_END); |
1761 | |
1762 | s->last_error = RETVAL ; |
1763 | s->window_lastoff = s->stream.total_in ; |
1a6a8453 |
1764 | s->compressedBytes += SvCUR(buf) - s->stream.avail_in ; |
642e522c |
1765 | |
1766 | if (RETVAL == Z_STREAM_END) |
1767 | { |
1768 | s->matchedEndBlock = 1 ; |
1769 | |
1770 | /* save the location of the end of the compressed data */ |
1771 | s->window_end = SvCUR(buf) - s->stream.avail_in - 1 ; |
1772 | s->window_endOffset = s->stream.total_in ; |
1773 | if (s->window_left) |
1774 | { |
1775 | -- s->window_endOffset ; |
1776 | } |
1777 | |
1778 | /* if window wrapped, build dictionary from window by rotating */ |
1779 | if (s->window_full) { |
1780 | rotate(s->window, WINDOW_SIZE, s->window_have); |
1781 | s->window_have = WINDOW_SIZE; |
1782 | } |
1783 | |
1784 | /* if (s->flags & FLAG_CONSUME_INPUT) { */ |
1785 | if (1) { |
1786 | unsigned in = s->stream.avail_in ; |
1787 | SvCUR_set(buf, in) ; |
1788 | if (in) |
1789 | Move(s->stream.next_in, SvPVbyte_nolen(buf), in, char) ; |
1790 | *SvEND(buf) = '\0'; |
1791 | SvSETMAGIC(buf); |
1792 | } |
1793 | } |
1794 | #endif |
1795 | OUTPUT: |
1796 | RETVAL |
1797 | |
1798 | |
1799 | uLong |
1800 | getEndOffset(s) |
1801 | Compress::Zlib::inflateScanStream s |
1802 | CODE: |
1803 | #ifndef MAGIC_APPEND |
1804 | croak("getEndOffset needs zlib 1.2.1 or better"); |
1805 | #else |
1806 | RETVAL = s->window_endOffset; |
1807 | #endif |
1808 | OUTPUT: |
1809 | RETVAL |
1810 | |
1811 | uLong |
1812 | inflateCount(s) |
1813 | Compress::Zlib::inflateScanStream s |
1814 | CODE: |
1815 | #ifndef MAGIC_APPEND |
1816 | croak("inflateCount needs zlib 1.2.1 or better"); |
1817 | #else |
1818 | RETVAL = s->bytesInflated; |
1819 | #endif |
1820 | OUTPUT: |
1821 | RETVAL |
1822 | |
1a6a8453 |
1823 | uLong |
1824 | compressedBytes(s) |
1825 | Compress::Zlib::inflateStream s |
1826 | CODE: |
1827 | RETVAL = s->compressedBytes; |
1828 | OUTPUT: |
1829 | RETVAL |
1830 | |
1831 | uLong |
1832 | uncompressedBytes(s) |
1833 | Compress::Zlib::inflateStream s |
1834 | CODE: |
1835 | RETVAL = s->uncompressedBytes; |
1836 | OUTPUT: |
1837 | RETVAL |
1838 | |
642e522c |
1839 | |
1840 | uLong |
1841 | getLastBlockOffset(s) |
1842 | Compress::Zlib::inflateScanStream s |
1843 | CODE: |
1844 | #ifndef MAGIC_APPEND |
1845 | croak("getLastBlockOffset needs zlib 1.2.1 or better"); |
1846 | #else |
1847 | RETVAL = s->lastBlockOffset - (s->window_lastbit != 0); |
1848 | #endif |
1849 | OUTPUT: |
1850 | RETVAL |
1851 | |
1852 | uLong |
1853 | getLastBufferOffset(s) |
1854 | Compress::Zlib::inflateScanStream s |
1855 | CODE: |
1856 | #ifndef MAGIC_APPEND |
1857 | croak("getLastBufferOffset needs zlib 1.2.1 or better"); |
1858 | #else |
1859 | RETVAL = s->window_lastoff; |
1860 | #endif |
1861 | OUTPUT: |
1862 | RETVAL |
1863 | |
1864 | void |
1865 | resetLastBlockByte(s, byte) |
1866 | Compress::Zlib::inflateScanStream s |
1867 | unsigned char* byte |
1868 | CODE: |
1869 | #ifndef MAGIC_APPEND |
1870 | croak("resetLastBlockByte needs zlib 1.2.1 or better"); |
1871 | #else |
1872 | *byte = *byte ^ (1 << ((8 - s->window_lastbit) & 7)); |
1873 | #endif |
1874 | |
1875 | |
1876 | void |
1877 | _createDeflateStream(inf_s, flags,level, method, windowBits, memLevel, strategy, bufsize) |
1878 | Compress::Zlib::inflateScanStream inf_s |
1879 | int flags |
1880 | int level |
1881 | int method |
1882 | int windowBits |
1883 | int memLevel |
1884 | int strategy |
1885 | uLong bufsize |
1886 | PPCODE: |
1887 | { |
1888 | #ifndef MAGIC_APPEND |
1889 | flags = flags; |
1890 | level = level ; |
1891 | method = method; |
1892 | windowBits = windowBits; |
1893 | memLevel = memLevel; |
1894 | strategy = strategy; |
1895 | bufsize= bufsize; |
1896 | croak("_createDeflateStream needs zlib 1.2.1 or better"); |
1897 | #else |
1898 | int err ; |
1899 | deflateStream s ; |
1900 | |
1901 | if (trace) |
1902 | warn("in _createDeflateStream(level=%d, method=%d, windowBits=%d, memLevel=%d, strategy=%d, bufsize=%lu\n", |
1903 | level, method, windowBits, memLevel, strategy, bufsize) ; |
1904 | if ((s = InitStream() )) { |
1905 | |
1906 | s->Level = level; |
1907 | s->Method = method; |
1908 | s->WindowBits = windowBits; |
1909 | s->MemLevel = memLevel; |
1910 | s->Strategy = strategy; |
1911 | |
1912 | err = deflateInit2(&(s->stream), level, |
1913 | method, windowBits, memLevel, strategy); |
1914 | |
1915 | if (err == Z_OK) { |
1916 | err = deflateSetDictionary(&(s->stream), inf_s->window, inf_s->window_have); |
1917 | s->dict_adler = s->stream.adler ; |
1918 | } |
1919 | |
1920 | if (err != Z_OK) { |
1921 | Safefree(s) ; |
1922 | s = NULL ; |
1923 | } |
1924 | else { |
1925 | PostInitStream(s, flags, bufsize, windowBits) ; |
1926 | s->crc32 = inf_s->crc32; |
1927 | s->adler32 = inf_s->adler32; |
1928 | s->stream.adler = inf_s->stream.adler ; |
1929 | /* s->stream.total_out = inf_s->bytesInflated ; */ |
1930 | s->stream.total_in = inf_s->stream.total_out ; |
1931 | if (inf_s->window_left) { |
1932 | /* printf("** window_left %d, window_lastByte %d\n", inf_s->window_left, inf_s->window_lastByte); */ |
1933 | deflatePrime(&(s->stream), 8 - inf_s->window_left, inf_s->window_lastByte); |
1934 | } |
1935 | } |
1936 | } |
1937 | else |
1938 | err = Z_MEM_ERROR ; |
1939 | |
1940 | XPUSHs(sv_setref_pv(sv_newmortal(), |
1941 | "Compress::Zlib::deflateStream", (void*)s)); |
1942 | if (GIMME == G_ARRAY) { |
1943 | SV * sv = sv_2mortal(newSViv(err)) ; |
1944 | setDUALstatus(sv, err); |
1945 | XPUSHs(sv) ; |
1946 | } |
1947 | #endif |
1948 | } |
1949 | |
1950 | DualType |
1951 | status(s) |
1952 | Compress::Zlib::inflateScanStream s |
1953 | CODE: |
1954 | RETVAL = s->last_error ; |
1955 | OUTPUT: |
1956 | RETVAL |
1957 | |
1958 | uLong |
1959 | crc32(s) |
1960 | Compress::Zlib::inflateScanStream s |
1961 | CODE: |
1962 | RETVAL = s->crc32 ; |
1963 | OUTPUT: |
1964 | RETVAL |
1965 | |
1966 | |
1967 | uLong |
1968 | adler32(s) |
1969 | Compress::Zlib::inflateScanStream s |
1970 | CODE: |
1971 | RETVAL = s->adler32 ; |
1972 | OUTPUT: |
1973 | RETVAL |
1974 | |