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author | David Walter Seikel | 2013-01-13 17:24:39 +1000 |
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committer | David Walter Seikel | 2013-01-13 17:24:39 +1000 |
commit | 393b5cd1dc438872af89d334ef6e5fcc59f27d47 (patch) | |
tree | 6a14521219942a08a1b95cb2f5a923a9edd60f63 /libraries/irrlicht-1.8/source/Irrlicht/zlib/gzread.c | |
parent | Add a note about rasters suggested start up code. (diff) | |
download | SledjHamr-393b5cd1dc438872af89d334ef6e5fcc59f27d47.zip SledjHamr-393b5cd1dc438872af89d334ef6e5fcc59f27d47.tar.gz SledjHamr-393b5cd1dc438872af89d334ef6e5fcc59f27d47.tar.bz2 SledjHamr-393b5cd1dc438872af89d334ef6e5fcc59f27d47.tar.xz |
Added Irrlicht 1.8, but without all the Windows binaries.
Diffstat (limited to '')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/zlib/gzread.c | 589 |
1 files changed, 589 insertions, 0 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/zlib/gzread.c b/libraries/irrlicht-1.8/source/Irrlicht/zlib/gzread.c new file mode 100644 index 0000000..3493d34 --- /dev/null +++ b/libraries/irrlicht-1.8/source/Irrlicht/zlib/gzread.c | |||
@@ -0,0 +1,589 @@ | |||
1 | /* gzread.c -- zlib functions for reading gzip files | ||
2 | * Copyright (C) 2004, 2005, 2010, 2011, 2012 Mark Adler | ||
3 | * For conditions of distribution and use, see copyright notice in zlib.h | ||
4 | */ | ||
5 | |||
6 | #include "gzguts.h" | ||
7 | |||
8 | /* Local functions */ | ||
9 | local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *)); | ||
10 | local int gz_avail OF((gz_statep)); | ||
11 | local int gz_look OF((gz_statep)); | ||
12 | local int gz_decomp OF((gz_statep)); | ||
13 | local int gz_fetch OF((gz_statep)); | ||
14 | local int gz_skip OF((gz_statep, z_off64_t)); | ||
15 | |||
16 | /* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from | ||
17 | state->fd, and update state->eof, state->err, and state->msg as appropriate. | ||
18 | This function needs to loop on read(), since read() is not guaranteed to | ||
19 | read the number of bytes requested, depending on the type of descriptor. */ | ||
20 | local int gz_load(state, buf, len, have) | ||
21 | gz_statep state; | ||
22 | unsigned char *buf; | ||
23 | unsigned len; | ||
24 | unsigned *have; | ||
25 | { | ||
26 | int ret; | ||
27 | |||
28 | *have = 0; | ||
29 | do { | ||
30 | ret = read(state->fd, buf + *have, len - *have); | ||
31 | if (ret <= 0) | ||
32 | break; | ||
33 | *have += ret; | ||
34 | } while (*have < len); | ||
35 | if (ret < 0) { | ||
36 | gz_error(state, Z_ERRNO, zstrerror()); | ||
37 | return -1; | ||
38 | } | ||
39 | if (ret == 0) | ||
40 | state->eof = 1; | ||
41 | return 0; | ||
42 | } | ||
43 | |||
44 | /* Load up input buffer and set eof flag if last data loaded -- return -1 on | ||
45 | error, 0 otherwise. Note that the eof flag is set when the end of the input | ||
46 | file is reached, even though there may be unused data in the buffer. Once | ||
47 | that data has been used, no more attempts will be made to read the file. | ||
48 | If strm->avail_in != 0, then the current data is moved to the beginning of | ||
49 | the input buffer, and then the remainder of the buffer is loaded with the | ||
50 | available data from the input file. */ | ||
51 | local int gz_avail(state) | ||
52 | gz_statep state; | ||
53 | { | ||
54 | unsigned got; | ||
55 | z_streamp strm = &(state->strm); | ||
56 | |||
57 | if (state->err != Z_OK && state->err != Z_BUF_ERROR) | ||
58 | return -1; | ||
59 | if (state->eof == 0) { | ||
60 | if (strm->avail_in) { /* copy what's there to the start */ | ||
61 | unsigned char *p = state->in, *q = strm->next_in; | ||
62 | unsigned n = strm->avail_in; | ||
63 | do { | ||
64 | *p++ = *q++; | ||
65 | } while (--n); | ||
66 | } | ||
67 | if (gz_load(state, state->in + strm->avail_in, | ||
68 | state->size - strm->avail_in, &got) == -1) | ||
69 | return -1; | ||
70 | strm->avail_in += got; | ||
71 | strm->next_in = state->in; | ||
72 | } | ||
73 | return 0; | ||
74 | } | ||
75 | |||
76 | /* Look for gzip header, set up for inflate or copy. state->x.have must be 0. | ||
77 | If this is the first time in, allocate required memory. state->how will be | ||
78 | left unchanged if there is no more input data available, will be set to COPY | ||
79 | if there is no gzip header and direct copying will be performed, or it will | ||
80 | be set to GZIP for decompression. If direct copying, then leftover input | ||
81 | data from the input buffer will be copied to the output buffer. In that | ||
82 | case, all further file reads will be directly to either the output buffer or | ||
83 | a user buffer. If decompressing, the inflate state will be initialized. | ||
84 | gz_look() will return 0 on success or -1 on failure. */ | ||
85 | local int gz_look(state) | ||
86 | gz_statep state; | ||
87 | { | ||
88 | z_streamp strm = &(state->strm); | ||
89 | |||
90 | /* allocate read buffers and inflate memory */ | ||
91 | if (state->size == 0) { | ||
92 | /* allocate buffers */ | ||
93 | state->in = malloc(state->want); | ||
94 | state->out = malloc(state->want << 1); | ||
95 | if (state->in == NULL || state->out == NULL) { | ||
96 | if (state->out != NULL) | ||
97 | free(state->out); | ||
98 | if (state->in != NULL) | ||
99 | free(state->in); | ||
100 | gz_error(state, Z_MEM_ERROR, "out of memory"); | ||
101 | return -1; | ||
102 | } | ||
103 | state->size = state->want; | ||
104 | |||
105 | /* allocate inflate memory */ | ||
106 | state->strm.zalloc = Z_NULL; | ||
107 | state->strm.zfree = Z_NULL; | ||
108 | state->strm.opaque = Z_NULL; | ||
109 | state->strm.avail_in = 0; | ||
110 | state->strm.next_in = Z_NULL; | ||
111 | if (inflateInit2(&(state->strm), 15 + 16) != Z_OK) { /* gunzip */ | ||
112 | free(state->out); | ||
113 | free(state->in); | ||
114 | state->size = 0; | ||
115 | gz_error(state, Z_MEM_ERROR, "out of memory"); | ||
116 | return -1; | ||
117 | } | ||
118 | } | ||
119 | |||
120 | /* get at least the magic bytes in the input buffer */ | ||
121 | if (strm->avail_in < 2) { | ||
122 | if (gz_avail(state) == -1) | ||
123 | return -1; | ||
124 | if (strm->avail_in == 0) | ||
125 | return 0; | ||
126 | } | ||
127 | |||
128 | /* look for gzip magic bytes -- if there, do gzip decoding (note: there is | ||
129 | a logical dilemma here when considering the case of a partially written | ||
130 | gzip file, to wit, if a single 31 byte is written, then we cannot tell | ||
131 | whether this is a single-byte file, or just a partially written gzip | ||
132 | file -- for here we assume that if a gzip file is being written, then | ||
133 | the header will be written in a single operation, so that reading a | ||
134 | single byte is sufficient indication that it is not a gzip file) */ | ||
135 | if (strm->avail_in > 1 && | ||
136 | strm->next_in[0] == 31 && strm->next_in[1] == 139) { | ||
137 | inflateReset(strm); | ||
138 | state->how = GZIP; | ||
139 | state->direct = 0; | ||
140 | return 0; | ||
141 | } | ||
142 | |||
143 | /* no gzip header -- if we were decoding gzip before, then this is trailing | ||
144 | garbage. Ignore the trailing garbage and finish. */ | ||
145 | if (state->direct == 0) { | ||
146 | strm->avail_in = 0; | ||
147 | state->eof = 1; | ||
148 | state->x.have = 0; | ||
149 | return 0; | ||
150 | } | ||
151 | |||
152 | /* doing raw i/o, copy any leftover input to output -- this assumes that | ||
153 | the output buffer is larger than the input buffer, which also assures | ||
154 | space for gzungetc() */ | ||
155 | state->x.next = state->out; | ||
156 | if (strm->avail_in) { | ||
157 | memcpy(state->x.next, strm->next_in, strm->avail_in); | ||
158 | state->x.have = strm->avail_in; | ||
159 | strm->avail_in = 0; | ||
160 | } | ||
161 | state->how = COPY; | ||
162 | state->direct = 1; | ||
163 | return 0; | ||
164 | } | ||
165 | |||
166 | /* Decompress from input to the provided next_out and avail_out in the state. | ||
167 | On return, state->x.have and state->x.next point to the just decompressed | ||
168 | data. If the gzip stream completes, state->how is reset to LOOK to look for | ||
169 | the next gzip stream or raw data, once state->x.have is depleted. Returns 0 | ||
170 | on success, -1 on failure. */ | ||
171 | local int gz_decomp(state) | ||
172 | gz_statep state; | ||
173 | { | ||
174 | int ret = Z_OK; | ||
175 | unsigned had; | ||
176 | z_streamp strm = &(state->strm); | ||
177 | |||
178 | /* fill output buffer up to end of deflate stream */ | ||
179 | had = strm->avail_out; | ||
180 | do { | ||
181 | /* get more input for inflate() */ | ||
182 | if (strm->avail_in == 0 && gz_avail(state) == -1) | ||
183 | return -1; | ||
184 | if (strm->avail_in == 0) { | ||
185 | gz_error(state, Z_BUF_ERROR, "unexpected end of file"); | ||
186 | break; | ||
187 | } | ||
188 | |||
189 | /* decompress and handle errors */ | ||
190 | ret = inflate(strm, Z_NO_FLUSH); | ||
191 | if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) { | ||
192 | gz_error(state, Z_STREAM_ERROR, | ||
193 | "internal error: inflate stream corrupt"); | ||
194 | return -1; | ||
195 | } | ||
196 | if (ret == Z_MEM_ERROR) { | ||
197 | gz_error(state, Z_MEM_ERROR, "out of memory"); | ||
198 | return -1; | ||
199 | } | ||
200 | if (ret == Z_DATA_ERROR) { /* deflate stream invalid */ | ||
201 | gz_error(state, Z_DATA_ERROR, | ||
202 | strm->msg == NULL ? "compressed data error" : strm->msg); | ||
203 | return -1; | ||
204 | } | ||
205 | } while (strm->avail_out && ret != Z_STREAM_END); | ||
206 | |||
207 | /* update available output */ | ||
208 | state->x.have = had - strm->avail_out; | ||
209 | state->x.next = strm->next_out - state->x.have; | ||
210 | |||
211 | /* if the gzip stream completed successfully, look for another */ | ||
212 | if (ret == Z_STREAM_END) | ||
213 | state->how = LOOK; | ||
214 | |||
215 | /* good decompression */ | ||
216 | return 0; | ||
217 | } | ||
218 | |||
219 | /* Fetch data and put it in the output buffer. Assumes state->x.have is 0. | ||
220 | Data is either copied from the input file or decompressed from the input | ||
221 | file depending on state->how. If state->how is LOOK, then a gzip header is | ||
222 | looked for to determine whether to copy or decompress. Returns -1 on error, | ||
223 | otherwise 0. gz_fetch() will leave state->how as COPY or GZIP unless the | ||
224 | end of the input file has been reached and all data has been processed. */ | ||
225 | local int gz_fetch(state) | ||
226 | gz_statep state; | ||
227 | { | ||
228 | z_streamp strm = &(state->strm); | ||
229 | |||
230 | do { | ||
231 | switch(state->how) { | ||
232 | case LOOK: /* -> LOOK, COPY (only if never GZIP), or GZIP */ | ||
233 | if (gz_look(state) == -1) | ||
234 | return -1; | ||
235 | if (state->how == LOOK) | ||
236 | return 0; | ||
237 | break; | ||
238 | case COPY: /* -> COPY */ | ||
239 | if (gz_load(state, state->out, state->size << 1, &(state->x.have)) | ||
240 | == -1) | ||
241 | return -1; | ||
242 | state->x.next = state->out; | ||
243 | return 0; | ||
244 | case GZIP: /* -> GZIP or LOOK (if end of gzip stream) */ | ||
245 | strm->avail_out = state->size << 1; | ||
246 | strm->next_out = state->out; | ||
247 | if (gz_decomp(state) == -1) | ||
248 | return -1; | ||
249 | } | ||
250 | } while (state->x.have == 0 && (!state->eof || strm->avail_in)); | ||
251 | return 0; | ||
252 | } | ||
253 | |||
254 | /* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */ | ||
255 | local int gz_skip(state, len) | ||
256 | gz_statep state; | ||
257 | z_off64_t len; | ||
258 | { | ||
259 | unsigned n; | ||
260 | |||
261 | /* skip over len bytes or reach end-of-file, whichever comes first */ | ||
262 | while (len) | ||
263 | /* skip over whatever is in output buffer */ | ||
264 | if (state->x.have) { | ||
265 | n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > len ? | ||
266 | (unsigned)len : state->x.have; | ||
267 | state->x.have -= n; | ||
268 | state->x.next += n; | ||
269 | state->x.pos += n; | ||
270 | len -= n; | ||
271 | } | ||
272 | |||
273 | /* output buffer empty -- return if we're at the end of the input */ | ||
274 | else if (state->eof && state->strm.avail_in == 0) | ||
275 | break; | ||
276 | |||
277 | /* need more data to skip -- load up output buffer */ | ||
278 | else { | ||
279 | /* get more output, looking for header if required */ | ||
280 | if (gz_fetch(state) == -1) | ||
281 | return -1; | ||
282 | } | ||
283 | return 0; | ||
284 | } | ||
285 | |||
286 | /* -- see zlib.h -- */ | ||
287 | int ZEXPORT gzread(file, buf, len) | ||
288 | gzFile file; | ||
289 | voidp buf; | ||
290 | unsigned len; | ||
291 | { | ||
292 | unsigned got, n; | ||
293 | gz_statep state; | ||
294 | z_streamp strm; | ||
295 | |||
296 | /* get internal structure */ | ||
297 | if (file == NULL) | ||
298 | return -1; | ||
299 | state = (gz_statep)file; | ||
300 | strm = &(state->strm); | ||
301 | |||
302 | /* check that we're reading and that there's no (serious) error */ | ||
303 | if (state->mode != GZ_READ || | ||
304 | (state->err != Z_OK && state->err != Z_BUF_ERROR)) | ||
305 | return -1; | ||
306 | |||
307 | /* since an int is returned, make sure len fits in one, otherwise return | ||
308 | with an error (this avoids the flaw in the interface) */ | ||
309 | if ((int)len < 0) { | ||
310 | gz_error(state, Z_DATA_ERROR, "requested length does not fit in int"); | ||
311 | return -1; | ||
312 | } | ||
313 | |||
314 | /* if len is zero, avoid unnecessary operations */ | ||
315 | if (len == 0) | ||
316 | return 0; | ||
317 | |||
318 | /* process a skip request */ | ||
319 | if (state->seek) { | ||
320 | state->seek = 0; | ||
321 | if (gz_skip(state, state->skip) == -1) | ||
322 | return -1; | ||
323 | } | ||
324 | |||
325 | /* get len bytes to buf, or less than len if at the end */ | ||
326 | got = 0; | ||
327 | do { | ||
328 | /* first just try copying data from the output buffer */ | ||
329 | if (state->x.have) { | ||
330 | n = state->x.have > len ? len : state->x.have; | ||
331 | memcpy(buf, state->x.next, n); | ||
332 | state->x.next += n; | ||
333 | state->x.have -= n; | ||
334 | } | ||
335 | |||
336 | /* output buffer empty -- return if we're at the end of the input */ | ||
337 | else if (state->eof && strm->avail_in == 0) { | ||
338 | state->past = 1; /* tried to read past end */ | ||
339 | break; | ||
340 | } | ||
341 | |||
342 | /* need output data -- for small len or new stream load up our output | ||
343 | buffer */ | ||
344 | else if (state->how == LOOK || len < (state->size << 1)) { | ||
345 | /* get more output, looking for header if required */ | ||
346 | if (gz_fetch(state) == -1) | ||
347 | return -1; | ||
348 | continue; /* no progress yet -- go back to copy above */ | ||
349 | /* the copy above assures that we will leave with space in the | ||
350 | output buffer, allowing at least one gzungetc() to succeed */ | ||
351 | } | ||
352 | |||
353 | /* large len -- read directly into user buffer */ | ||
354 | else if (state->how == COPY) { /* read directly */ | ||
355 | if (gz_load(state, buf, len, &n) == -1) | ||
356 | return -1; | ||
357 | } | ||
358 | |||
359 | /* large len -- decompress directly into user buffer */ | ||
360 | else { /* state->how == GZIP */ | ||
361 | strm->avail_out = len; | ||
362 | strm->next_out = buf; | ||
363 | if (gz_decomp(state) == -1) | ||
364 | return -1; | ||
365 | n = state->x.have; | ||
366 | state->x.have = 0; | ||
367 | } | ||
368 | |||
369 | /* update progress */ | ||
370 | len -= n; | ||
371 | buf = (char *)buf + n; | ||
372 | got += n; | ||
373 | state->x.pos += n; | ||
374 | } while (len); | ||
375 | |||
376 | /* return number of bytes read into user buffer (will fit in int) */ | ||
377 | return (int)got; | ||
378 | } | ||
379 | |||
380 | /* -- see zlib.h -- */ | ||
381 | #undef gzgetc | ||
382 | int ZEXPORT gzgetc(file) | ||
383 | gzFile file; | ||
384 | { | ||
385 | int ret; | ||
386 | unsigned char buf[1]; | ||
387 | gz_statep state; | ||
388 | |||
389 | /* get internal structure */ | ||
390 | if (file == NULL) | ||
391 | return -1; | ||
392 | state = (gz_statep)file; | ||
393 | |||
394 | /* check that we're reading and that there's no (serious) error */ | ||
395 | if (state->mode != GZ_READ || | ||
396 | (state->err != Z_OK && state->err != Z_BUF_ERROR)) | ||
397 | return -1; | ||
398 | |||
399 | /* try output buffer (no need to check for skip request) */ | ||
400 | if (state->x.have) { | ||
401 | state->x.have--; | ||
402 | state->x.pos++; | ||
403 | return *(state->x.next)++; | ||
404 | } | ||
405 | |||
406 | /* nothing there -- try gzread() */ | ||
407 | ret = gzread(file, buf, 1); | ||
408 | return ret < 1 ? -1 : buf[0]; | ||
409 | } | ||
410 | |||
411 | int ZEXPORT gzgetc_(file) | ||
412 | gzFile file; | ||
413 | { | ||
414 | return gzgetc(file); | ||
415 | } | ||
416 | |||
417 | /* -- see zlib.h -- */ | ||
418 | int ZEXPORT gzungetc(c, file) | ||
419 | int c; | ||
420 | gzFile file; | ||
421 | { | ||
422 | gz_statep state; | ||
423 | |||
424 | /* get internal structure */ | ||
425 | if (file == NULL) | ||
426 | return -1; | ||
427 | state = (gz_statep)file; | ||
428 | |||
429 | /* check that we're reading and that there's no (serious) error */ | ||
430 | if (state->mode != GZ_READ || | ||
431 | (state->err != Z_OK && state->err != Z_BUF_ERROR)) | ||
432 | return -1; | ||
433 | |||
434 | /* process a skip request */ | ||
435 | if (state->seek) { | ||
436 | state->seek = 0; | ||
437 | if (gz_skip(state, state->skip) == -1) | ||
438 | return -1; | ||
439 | } | ||
440 | |||
441 | /* can't push EOF */ | ||
442 | if (c < 0) | ||
443 | return -1; | ||
444 | |||
445 | /* if output buffer empty, put byte at end (allows more pushing) */ | ||
446 | if (state->x.have == 0) { | ||
447 | state->x.have = 1; | ||
448 | state->x.next = state->out + (state->size << 1) - 1; | ||
449 | state->x.next[0] = c; | ||
450 | state->x.pos--; | ||
451 | state->past = 0; | ||
452 | return c; | ||
453 | } | ||
454 | |||
455 | /* if no room, give up (must have already done a gzungetc()) */ | ||
456 | if (state->x.have == (state->size << 1)) { | ||
457 | gz_error(state, Z_DATA_ERROR, "out of room to push characters"); | ||
458 | return -1; | ||
459 | } | ||
460 | |||
461 | /* slide output data if needed and insert byte before existing data */ | ||
462 | if (state->x.next == state->out) { | ||
463 | unsigned char *src = state->out + state->x.have; | ||
464 | unsigned char *dest = state->out + (state->size << 1); | ||
465 | while (src > state->out) | ||
466 | *--dest = *--src; | ||
467 | state->x.next = dest; | ||
468 | } | ||
469 | state->x.have++; | ||
470 | state->x.next--; | ||
471 | state->x.next[0] = c; | ||
472 | state->x.pos--; | ||
473 | state->past = 0; | ||
474 | return c; | ||
475 | } | ||
476 | |||
477 | /* -- see zlib.h -- */ | ||
478 | char * ZEXPORT gzgets(file, buf, len) | ||
479 | gzFile file; | ||
480 | char *buf; | ||
481 | int len; | ||
482 | { | ||
483 | unsigned left, n; | ||
484 | char *str; | ||
485 | unsigned char *eol; | ||
486 | gz_statep state; | ||
487 | |||
488 | /* check parameters and get internal structure */ | ||
489 | if (file == NULL || buf == NULL || len < 1) | ||
490 | return NULL; | ||
491 | state = (gz_statep)file; | ||
492 | |||
493 | /* check that we're reading and that there's no (serious) error */ | ||
494 | if (state->mode != GZ_READ || | ||
495 | (state->err != Z_OK && state->err != Z_BUF_ERROR)) | ||
496 | return NULL; | ||
497 | |||
498 | /* process a skip request */ | ||
499 | if (state->seek) { | ||
500 | state->seek = 0; | ||
501 | if (gz_skip(state, state->skip) == -1) | ||
502 | return NULL; | ||
503 | } | ||
504 | |||
505 | /* copy output bytes up to new line or len - 1, whichever comes first -- | ||
506 | append a terminating zero to the string (we don't check for a zero in | ||
507 | the contents, let the user worry about that) */ | ||
508 | str = buf; | ||
509 | left = (unsigned)len - 1; | ||
510 | if (left) do { | ||
511 | /* assure that something is in the output buffer */ | ||
512 | if (state->x.have == 0 && gz_fetch(state) == -1) | ||
513 | return NULL; /* error */ | ||
514 | if (state->x.have == 0) { /* end of file */ | ||
515 | state->past = 1; /* read past end */ | ||
516 | break; /* return what we have */ | ||
517 | } | ||
518 | |||
519 | /* look for end-of-line in current output buffer */ | ||
520 | n = state->x.have > left ? left : state->x.have; | ||
521 | eol = memchr(state->x.next, '\n', n); | ||
522 | if (eol != NULL) | ||
523 | n = (unsigned)(eol - state->x.next) + 1; | ||
524 | |||
525 | /* copy through end-of-line, or remainder if not found */ | ||
526 | memcpy(buf, state->x.next, n); | ||
527 | state->x.have -= n; | ||
528 | state->x.next += n; | ||
529 | state->x.pos += n; | ||
530 | left -= n; | ||
531 | buf += n; | ||
532 | } while (left && eol == NULL); | ||
533 | |||
534 | /* return terminated string, or if nothing, end of file */ | ||
535 | if (buf == str) | ||
536 | return NULL; | ||
537 | buf[0] = 0; | ||
538 | return str; | ||
539 | } | ||
540 | |||
541 | /* -- see zlib.h -- */ | ||
542 | int ZEXPORT gzdirect(file) | ||
543 | gzFile file; | ||
544 | { | ||
545 | gz_statep state; | ||
546 | |||
547 | /* get internal structure */ | ||
548 | if (file == NULL) | ||
549 | return 0; | ||
550 | state = (gz_statep)file; | ||
551 | |||
552 | /* if the state is not known, but we can find out, then do so (this is | ||
553 | mainly for right after a gzopen() or gzdopen()) */ | ||
554 | if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0) | ||
555 | (void)gz_look(state); | ||
556 | |||
557 | /* return 1 if transparent, 0 if processing a gzip stream */ | ||
558 | return state->direct; | ||
559 | } | ||
560 | |||
561 | /* -- see zlib.h -- */ | ||
562 | int ZEXPORT gzclose_r(file) | ||
563 | gzFile file; | ||
564 | { | ||
565 | int ret, err; | ||
566 | gz_statep state; | ||
567 | |||
568 | /* get internal structure */ | ||
569 | if (file == NULL) | ||
570 | return Z_STREAM_ERROR; | ||
571 | state = (gz_statep)file; | ||
572 | |||
573 | /* check that we're reading */ | ||
574 | if (state->mode != GZ_READ) | ||
575 | return Z_STREAM_ERROR; | ||
576 | |||
577 | /* free memory and close file */ | ||
578 | if (state->size) { | ||
579 | inflateEnd(&(state->strm)); | ||
580 | free(state->out); | ||
581 | free(state->in); | ||
582 | } | ||
583 | err = state->err == Z_BUF_ERROR ? Z_BUF_ERROR : Z_OK; | ||
584 | gz_error(state, Z_OK, NULL); | ||
585 | free(state->path); | ||
586 | ret = close(state->fd); | ||
587 | free(state); | ||
588 | return ret ? Z_ERRNO : err; | ||
589 | } | ||