summaryrefslogtreecommitdiff
path: root/Build/source/utils/lzma-utils/src/lzma/lzmp.cpp
blob: 9ba85f81745581fe7e8918759c85a0a21f9c0445 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
/*
 * LZMA command line tool similar to gzip to encode and decode LZMA files.
 *
 * Copyright (C) 2005 Ville Koskinen
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 */

#include "../sdk/Common/MyInitGuid.h"
#include "../sdk/Common/MyWindows.h"

#include <iostream>
using std::cout;
using std::cerr;
using std::endl;

#include <cstdio>
#include <cstring>
#include <climits>
#include <cstdlib>

#include <string>
using std::string;
#include <vector>
using std::vector;
typedef vector<string> stringVector;

#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include "getopt.h"
#include <signal.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <utime.h>
#include <sys/time.h> // futimes()

#if defined(_WIN32) || defined(OS2) || defined(MSDOS)
#include <fcntl.h>
#include <io.h>
#define MY_SET_BINARY_MODE(file) setmode(fileno(file),O_BINARY)
#else
#define MY_SET_BINARY_MODE(file)
#endif

#include "../sdk/7zip/Common/FileStreams.h"

#include "../sdk/Common/Types.h"

#include "../sdk/7zip/Compress/LZMA/LZMADecoder.h"
#include "../sdk/7zip/Compress/LZMA/LZMAEncoder.h"

#include "Exception.h"

#include "../lzma_version.h"

namespace lzma {

const char *PROGRAM_VERSION = PACKAGE_VERSION;
const char *PROGRAM_COPYRIGHT = "Copyright (C) 2005 Ville Koskinen";

/* LZMA_Alone switches:
    -a{N}:  set compression mode - [0, 2], default: 2 (max)
    -d{N}:  set dictionary - [0,28], default: 23 (8MB)
    -fb{N}: set number of fast bytes - [5, 255], default: 128
    -lc{N}: set number of literal context bits - [0, 8], default: 3
    -lp{N}: set number of literal pos bits - [0, 4], default: 0
    -pb{N}: set number of pos bits - [0, 4], default: 2
    -mf{MF_ID}: set Match Finder: [bt2, bt3, bt4, bt4b, pat2r, pat2,
                pat2h, pat3h, pat4h, hc3, hc4], default: bt4
*/

struct lzma_option {
	short compression_mode;			// -a
	short dictionary;			// -d
	short fast_bytes;			// -fb
	const wchar_t *match_finder;		// -mf
	short literal_context_bits;		// -lc
	short literal_pos_bits;			// -lp
	short pos_bits;				// -pb
};

/* The following is a mapping from gzip/bzip2 style -1 .. -9 compression modes
 * to the corresponding LZMA compression modes. Thanks, Larhzu, for coining
 * these. */
const lzma_option option_mapping[] = {
	{ 0,  0,  0,    NULL, 0, 0, 0},		// -0 (needed for indexing)
	{ 0, 16, 64,  L"hc3", 3, 0, 2},		// -1
	{ 0, 20, 64,  L"hc4", 3, 0, 2},		// -2
	{ 1, 19, 64,  L"bt4", 3, 0, 2},		// -3
	{ 2, 20, 64,  L"bt4", 3, 0, 2},		// -4
	{ 2, 21, 128, L"bt4", 3, 0, 2},		// -5
	{ 2, 22, 128, L"bt4", 3, 0, 2},		// -6
	{ 2, 23, 128, L"bt4", 3, 0, 2},		// -7
	{ 2, 24, 255, L"bt4", 3, 0, 2},		// -8
	{ 2, 25, 255, L"bt4", 3, 0, 2},		// -9
};

struct extension_pair {
	const char *from;
	const char *to;
};

const extension_pair known_extensions[] = {
	{ ".lzma", "" },
	{ ".tlz", ".tar" },
	{ NULL, NULL }
};

/* Sorry, I just happen to like enumerations. */
enum PROGRAM_MODE {
	PM_COMPRESS = 0,
	PM_DECOMPRESS,
	PM_TEST,
	PM_HELP,
	PM_LICENSE,
	PM_VERSION
};

enum {
	STATUS_OK = 0,
	STATUS_ERROR = 1,
	STATUS_WARNING = 2
};

/* getopt options. */
enum {
	OPT_FORMAT = INT_MIN
};
/* struct option { name, has_arg, flag, val } */
const struct option long_options[] = {
	{ "stdout", 0, 0, 'c' },
	{ "decompress", 0, 0, 'd' },
	{ "compress", 0, 0, 'z' },
	{ "keep", 0, 0, 'k' },
	{ "force", 0, 0, 'f' },
	{ "test", 0, 0, 't' },
	{ "suffix", 1, 0, 'S' },
	{ "quiet", 0, 0, 'q' },
	{ "verbose", 0, 0, 'v' },
	{ "help", 0, 0, 'h' },
	{ "license", 0, 0, 'L' },
	{ "version", 0, 0, 'V' },
	{ "fast", 0, 0, '1' },
	{ "best", 0, 0, '9' },
	{ "format", 1, 0, OPT_FORMAT },
	{ 0, 0, 0, 0 }
};

/* getopt option string (for the above options). */
const char option_string[] = "cdzkftS:qvhLV123456789A:D:F:";

/* Defaults. */
PROGRAM_MODE program_mode = PM_COMPRESS;
int	verbosity			= 0;
bool	stdinput			= false;
bool	stdoutput			= false;
bool	keep				= false;
bool	force				= false;
int	compression_mode		= 7;
//char	*suffix				= strdup(".lzma");
char	*suffix				= strdup(known_extensions[0].from);
lzma_option	advanced_options 	= { -1, -1, -1, NULL, -1, -1, -1 };

void print_help(const char *const argv0)
{
	// Help goes to stdout while other messages go to stderr.
	cout << "\nlzma " << PROGRAM_VERSION
		<< " " << PROGRAM_COPYRIGHT << "\n"
		"Based on LZMA SDK " << LZMA_SDK_VERSION_STRING << " "
		<< LZMA_SDK_COPYRIGHT_STRING
		<< "\n\nUsage: " << argv0
		<< " [flags and input files in any order]\n"
"  -c --stdout       output to standard output\n"
"  -d --decompress   force decompression\n"
"  -z --compress     force compression\n"
"  -k --keep         keep (don't delete) input files\n"
"  -f --force        force overwrite of output file and compress links\n"
"  -t --test         test compressed file integrity\n"
"  -S .suf  --suffix .suf   use suffix .suf on compressed files\n"
"  -q --quiet        suppress error messages\n"
"  -v --verbose      be verbose\n"
"  -h --help         print this message\n"
"  -L --license      display the license information\n"
"  -V --version      display version numbers of LZMA SDK and lzma\n"
"  -1 .. -2          fast compression\n"
"  -3 .. -9          good to excellent compression. -7 is the default.\n"
"     --fast         alias for -1\n"
"     --best         alias for -9 (usually *not* what you want)\n\n"
"  Memory usage depends a lot on the chosen compression mode -1 .. -9.\n"
"  See the man page lzma(1) for details.\n\n";
}

void print_license(void)
{
	cout << "\n  LZMA command line tool " << PROGRAM_VERSION << " - "
		<< PROGRAM_COPYRIGHT
		<< "\n  LZMA SDK " << LZMA_SDK_VERSION_STRING << " - "
		<< LZMA_SDK_COPYRIGHT_STRING
		<< "\n  This program is a part of the LZMA utils package.\n"
		"  http://tukaani.org/lzma/\n\n"
"  This program is free software; you can redistribute it and/or\n"
"  modify it under the terms of the GNU General Public License\n"
"  as published by the Free Software Foundation; either version 2\n"
"  of the License, or (at your option) any later version.\n"
"\n"
"  This program is distributed in the hope that it will be useful,\n"
"  but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
"  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
"  GNU General Public License for more details.\n"
"\n";
}

void print_version(void)
{
	cout << "LZMA command line tool " << PROGRAM_VERSION << "\n"
		<< "LZMA SDK " << LZMA_SDK_VERSION_STRING << "\n";
}

short str2int (const char *str, const int &min, const int &max)
{
	int value = -1;
	char *endptr = NULL;
	if (str == NULL || str[0] == '\0')
		throw ArgumentException("Invalid integer option");
	value = strtol (str, &endptr, 10);
	if (*endptr != '\0' || value < min || value > max)
		throw ArgumentException("Invalid integer option");
	return value;
}

void parse_options(int argc, char **argv, stringVector &filenames)
{
	/* Snatched from getopt(3). */
	int c;

	/* Check how we were called */
	{
		char *p = strrchr (argv[0], '/'); // Remove path prefix, if any
		if (p++ == NULL)
			p = argv[0];
		if (strstr (p, "un") != NULL) {
			program_mode = PM_DECOMPRESS;
		} else if (strstr (p, "cat") != NULL) {
			program_mode = PM_DECOMPRESS;
			stdoutput = true;
		}
	}

	while (-1 != (c = getopt_long(argc, argv, option_string,
			long_options, NULL))) {
		switch (c) {
			// stdout
			case 'c':
				stdoutput = true;
				break;

			// decompress
			case 'd':
				program_mode = PM_DECOMPRESS;
				break;

			// compress
			case 'z':
				program_mode = PM_COMPRESS;
				break;

			// keep
			case 'k':
				keep = true;
				break;

			// force
			case 'f':
				force = true;
				break;

			// test
			case 't':
				program_mode = PM_TEST;
				break;

			// suffix
			case 'S':
				if (optarg) {
					free(suffix);
					suffix = strdup(optarg);
				}
				break;

			// quiet
			case 'q':
				verbosity = 0;
				break;

			// verbose
			case 'v':
				verbosity++;
				break;

			// help
			case 'h':
				program_mode = PM_HELP;
				break;

			// license
			case 'L':
				program_mode = PM_LICENSE;
				break;

			// version
			case 'V':
				program_mode = PM_VERSION;
				break;

			case '1': case '2': case '3': case '4': case '5':
			case '6': case '7': case '8': case '9':
				compression_mode = c - '0';
				break;

			// Advanced options //
			// Unfortunately, these won't be compatible with
			// the new command line tool. These options will
			// be set differently there.
			
			// Compression mode
			case 'A':
				advanced_options.compression_mode =
						str2int (optarg, 0, 2);
				break;

			// Dictionary size
			case 'D':
				advanced_options.dictionary =
						str2int (optarg, 0, 28);
				break;

			// Fast bytes
			case 'F':
				advanced_options.fast_bytes =
						str2int (optarg, 0, 273);
				break;

			case OPT_FORMAT:
				// Forward compatibility with new command line tool.
				if (strcmp(optarg, "alone") != 0) {
					cerr << argv[0] << ": Only --format=alone is supported\n";
					exit(STATUS_ERROR);
				}
				break;

			default:
				throw ArgumentException("");
				break;
		} // switch(c)
	} // while(1)

	for (int i = optind; i < argc; i++) {
		if (strcmp("-", argv[i]) == 0)
			continue;
		filenames.push_back(argv[i]);
	}
} // parse_options

void set_encoder_properties(NCompress::NLZMA::CEncoder *encoder,
		lzma_option &opt)
{
	/* Almost verbatim from LzmaAlone.cpp. */
	    PROPID propIDs[] =
	{
		NCoderPropID::kDictionarySize,
		NCoderPropID::kPosStateBits,
		NCoderPropID::kLitContextBits,
		NCoderPropID::kLitPosBits,
		NCoderPropID::kAlgorithm,
		NCoderPropID::kNumFastBytes,
		NCoderPropID::kMatchFinder,
		NCoderPropID::kEndMarker
	};
	const int kNumProps = sizeof(propIDs) / sizeof(propIDs[0]);
#define VALUE(x) (advanced_options.x >= 0 ? advanced_options.x : opt.x)
	PROPVARIANT properties[kNumProps];
	for (int p = 0; p < 6; p++)
		properties[p].vt = VT_UI4;
	properties[0].ulVal = UInt32(1 << VALUE (dictionary));
	properties[1].ulVal = UInt32(VALUE (pos_bits));
	properties[2].ulVal = UInt32(VALUE (literal_context_bits));
	properties[3].ulVal = UInt32(VALUE (literal_pos_bits));
	properties[4].ulVal = UInt32(VALUE (compression_mode));
	properties[5].ulVal = UInt32(VALUE (fast_bytes));
#undef VALUE

	properties[6].vt = VT_BSTR;
	properties[6].bstrVal = (BSTR)opt.match_finder;

	properties[7].vt = VT_BOOL;
	properties[7].boolVal = stdinput ? VARIANT_TRUE : VARIANT_FALSE;

	if (encoder->SetCoderProperties(propIDs, properties, kNumProps) != S_OK)
		throw Exception("SetCoderProperties() error");
}

void encode(NCompress::NLZMA::CEncoder *encoderSpec,
		CMyComPtr<ISequentialInStream> inStream,
		CMyComPtr<ISequentialOutStream> outStream,
		lzma_option encoder_options,
		UInt64 fileSize)
{
	set_encoder_properties(encoderSpec, encoder_options);

	encoderSpec->WriteCoderProperties(outStream);

	for (int i = 0; i < 8; i++)
	{
		Byte b = Byte(fileSize >> (8 * i));
		if (outStream->Write(&b, sizeof(b), 0) != S_OK)
			throw Exception("Write error while encoding");
	}

	HRESULT result = encoderSpec->Code(inStream, outStream, 0, 0, 0);

	if (result == E_OUTOFMEMORY)
		throw Exception("Cannot allocate memory");
	else if (result != S_OK) {
		char buffer[33];
		snprintf(buffer, 33, "%d", (unsigned int)result);
		throw Exception(string("Encoder error: ") + buffer);
	}
}

void decode(NCompress::NLZMA::CDecoder *decoderSpec,
		CMyComPtr<ISequentialInStream> inStream,
		CMyComPtr<ISequentialOutStream> outStream)
{
	const UInt32 kPropertiesSize = 5;
	Byte properties[kPropertiesSize];
	UInt32 processedSize;
	UInt64 fileSize = 0;

	if (inStream->Read(properties, kPropertiesSize, &processedSize) != S_OK)
		throw Exception("Read error");
	if (processedSize != kPropertiesSize)
		throw Exception("Read error");
	
	// This tests only the first five bytes although the new format has
	// six-byte magic. It was lazier to implement this way.
	if (memcmp(properties, "\xFFLZMA", kPropertiesSize) == 0)
		throw Exception("New .lzma format detected. Newer LZMA Utils needed to decode.");

	if (decoderSpec->SetDecoderProperties2(properties, kPropertiesSize) != S_OK)
		throw Exception("SetDecoderProperties() error");

	for (int i = 0; i < 8; i++)
	{
		Byte b;

		if (inStream->Read(&b, sizeof(b), &processedSize) != S_OK)
			throw Exception("Read error");
		if (processedSize != 1)
			throw Exception("Read error");

		fileSize |= ((UInt64)b) << (8 * i);
	}

	if (decoderSpec->Code(inStream, outStream, 0, &fileSize, 0) != S_OK)
		throw Exception("Decoder error");
}

int open_instream(const string infile,
		CMyComPtr<ISequentialInStream> &inStream,
		UInt64 &fileSize)
{
	CInFileStream *inStreamSpec = new CInFileStream;
	inStream = inStreamSpec;
	if (!inStreamSpec->Open(infile.c_str()))
		throw Exception("Cannot open input file " + infile);

	inStreamSpec->File.GetLength(fileSize);

	return inStreamSpec->File.GetHandle();
}

int open_outstream(const string outfile,
		CMyComPtr<ISequentialOutStream> &outStream)
{
	COutFileStream *outStreamSpec = new COutFileStream;
	outStream = outStreamSpec;

	bool open_by_force = (program_mode == PM_TEST) | force;

	if (!outStreamSpec->Create(outfile.c_str(), open_by_force))
		throw Exception("Cannot open output file " + outfile);

	return outStreamSpec->File.GetHandle();
}

mode_t get_file_mode(string filename)
{
	struct stat in_stat;
	lstat(filename.c_str(), &in_stat);

	return in_stat.st_mode;
}

bool string_ends_with(string str, string ending)
{
	return equal(ending.rbegin(), ending.rend(), str.rbegin());
}

bool extension_is_known(string filename)
{
	bool known_format = false;
	extension_pair extension; int i = 1;

	extension = known_extensions[0];
	while (extension.from != NULL) {
		if (string_ends_with(filename, extension.from)) {
			known_format = true;
			break;
		}
		extension = known_extensions[i];
		i++;
	}

	if (!known_format) {
		if (!string_ends_with(filename, suffix)) {
			return false;
		}
	}

	return true;
}

string replace_extension(string filename)
{
	int suffix_starts_at = filename.length() - strlen (suffix);
	string from_suffix = filename.substr(suffix_starts_at, strlen (suffix));
	string ret = filename.substr(0, suffix_starts_at);
	extension_pair extension; int i = 1;

	bool found_replacement = false;
	extension = known_extensions[0];
	while (extension.from != NULL) {
		if (from_suffix.compare(extension.from) == 0) {
			ret += extension.to;
			found_replacement = true;
			break;
		}

		extension = known_extensions[i];
		i++;
	}

	return ret;
}

string pretty_print_status(string filename, string output_filename,
		string ratio)
{
	string ret = "";

	ret += filename;
	ret += ":\t ";

	if (program_mode == PM_TEST) {
		ret += "decoded successfully";

		return ret;
	}

	if (!stdinput && !stdoutput) {
		ret += ratio;
		ret += " -- ";
	}

	if (program_mode == PM_COMPRESS) {
		if (keep) {
			ret += "encoded successfully";

			return ret;
		}

		ret += "replaced with ";
		ret += output_filename;

		return ret;
	}

	if (program_mode == PM_DECOMPRESS) {
		if (keep) {
			ret += "decoded successfully";

			return ret;
		}

		ret += "replaced with ";
		ret += output_filename;

		return ret;
	}

	return ret;
}

static string archive_name; // I know, it is crude, but I haven't found any other
    // way then making a global variable to transfer filename to handler

void signal_handler (int signum)
{
    unlink (archive_name.c_str()); // deleting
    signal (signum, SIG_DFL); // we return the default function to used signal
    kill (getpid(), signum); // and then send this signal to the process again
}

static void
open_stdxxx(int status)
{
	for (int i = 0; i <= 2; ++i) {
		// We use fcntl() to check if the file descriptor is open.
		if (fcntl(i, F_GETFD) == -1 && errno == EBADF) {
			const int fd = open("/dev/null", O_NOCTTY
					| (i == 0 ? O_WRONLY : O_RDONLY));
			if (fd != i) {
				(void)close(fd);
				exit(status);
			}
		}
	}
	
	return;
}

static void
my_utimes(const char *name, int fd, time_t atime, time_t mtime)
{
#if defined(HAVE_FUTIMES) || defined(HAVE_FUTIMESAT) || defined(HAVE_UTIMES)
	// This could use subsecond precision, but it's not portably available
	// in struct stat, so that feature has to wait for LZMA Utils 5.
	struct timeval file_times[2];
	file_times[0].tv_sec = atime;
	file_times[0].tv_usec = 0;
	file_times[1].tv_sec = mtime;
	file_times[1].tv_usec = 0;

# if defined(HAVE_FUTIMES)
	(void)futimes(fd, file_times);
# elif defined(HAVE_FUTIMESAT)
	(void)futimesat(fd, NULL, file_times);
# else
	(void)utimes(name, file_times);
# endif

#elif defined(HAVE_UTIME)
	struct utimbuf file_times = { atime, mtime };
	(void)utime(name, &file_times);
#endif
}

} // namespace lzma


int main(int argc, char **argv)
{
	using namespace lzma;
	using std::cerr;

	open_stdxxx(STATUS_ERROR);

	stringVector filenames;

	signal (SIGTERM,signal_handler);
	signal (SIGHUP,signal_handler);
	signal (SIGINT,signal_handler);

	try {
		parse_options(argc, argv, filenames);
	}
	catch (...) {
		return STATUS_ERROR;
	}

	if (program_mode == PM_HELP) {
		print_help(argv[0]);
		return STATUS_OK;
	}
	else if (program_mode == PM_LICENSE) {
		print_license();
		return STATUS_OK;
	}
	else if (program_mode == PM_VERSION) {
		print_version();
		return STATUS_OK;
	}

	if (filenames.empty()) {
		stdinput = true;
		stdoutput = true;

		/* FIXME: get rid of this */
		filenames.push_back("-");
	}

	/* Protection: always create new files with 0600 in order to prevent
	 * outsiders from reading incomplete data. */
	umask(0077);

	bool warning = false;

	for (int i = 0; i < filenames.size(); i++) {
		CMyComPtr<ISequentialInStream> inStream;
		CMyComPtr<ISequentialOutStream> outStream;
		UInt64 fileSize = 0;
		int inhandle = 0, outhandle = 0;
		string output_filename;

		if (stdinput) {
			inStream = new CStdInFileStream;
			MY_SET_BINARY_MODE(stdin);
			fileSize = (UInt64)(Int64)-1;

			inhandle = STDIN_FILENO;

			outStream = new CStdOutFileStream;
			MY_SET_BINARY_MODE(stdout);

			outhandle = STDOUT_FILENO;
		}
		else {
			mode_t infile_mode = get_file_mode(filenames[i]);
			if (!S_ISREG(infile_mode)) {
				if (S_ISDIR(infile_mode)) {
					warning = true;
					cerr << argv[0] << ": " << filenames[i] << ": "
						<< "cowardly refusing to work on directory"
						<< endl;

					continue;
				}
				else if (S_ISLNK(infile_mode)) {
					if (!stdoutput && !force) {
						warning = true;

					cerr << argv[0] << ": " << filenames[i] << ": "
							<< "cowardly refusing to work on symbolic link "
							<< "(use --force to force encoding or decoding)"
							<< endl;

						continue;
					}
				}
				else {
					warning = true;

					cerr << argv[0] << ": " << filenames[i] << ": "
						<< "doesn't exist or is not a regular file"
						<< endl;

					continue;
				}
			}

			// Test if the file already ends with *suffix.
			if (!stdoutput && program_mode == PM_COMPRESS && !force
					&& string_ends_with(filenames[i],
						suffix)) {
				warning = true;

				cerr << filenames[i] << " already has "
					<< suffix << " suffix -- unchanged\n";

				continue;
			}

			// Test if the file extension is known.
			if (!stdoutput && program_mode == PM_DECOMPRESS
					&& !extension_is_known(filenames[i])) {
				warning = true;

				cerr << filenames[i] << ": "
					<< " unknown suffix -- unchanged"
					<< endl;

				continue;
			}

			try {
				inhandle = open_instream(filenames[i], inStream, fileSize);
			}
			catch (Exception e) {
				cerr << argv[0] << ": " << e.what() << endl;
				return STATUS_ERROR;
			}

			if (stdoutput) {
				outStream = new CStdOutFileStream;
				MY_SET_BINARY_MODE(stdout);

				outhandle = STDOUT_FILENO;
			}
			else {
				/* Testing mode is nothing else but decoding
				 * and throwing away the result. */
				if (program_mode == PM_TEST)
					output_filename = "/dev/null";
				else if (program_mode == PM_DECOMPRESS)
					output_filename = replace_extension(filenames[i]);
				else
					output_filename = filenames[i]
							+ suffix;
				archive_name = output_filename;
				
				try {
					outhandle = open_outstream(output_filename, outStream);
				}
				catch (Exception e) {
					cerr << argv[0] << ": " << e.what() << endl;
					return STATUS_ERROR;
				}
			}

		}

		// Unless --force is specified, do not read/write compressed
		// data from/to a terminal.
		if (!force) {
			if (program_mode == PM_COMPRESS && isatty(outhandle)) {
				cerr << argv[0] << ": compressed data not "
					"written to a terminal. Use "
					"-f to force compression.\n"
					<< argv[0] << ": For help, type: "
					<< argv[0] << " -h\n";
				return STATUS_ERROR;
			} else if (program_mode == PM_DECOMPRESS
					&& isatty(inhandle)) {
				cerr << argv[0] << ": compressed data not "
					"read from a terminal. Use "
					"-f to force decompression.\n"
					<< argv[0] << ": For help, type: "
					<< argv[0] << " -h\n";
				return STATUS_ERROR;
			}
		}

		if (program_mode == PM_COMPRESS) {
			    NCompress::NLZMA::CEncoder *encoderSpec =
				      new NCompress::NLZMA::CEncoder;

			lzma_option options = option_mapping[compression_mode];

			try {
				encode(encoderSpec, inStream, outStream, options, fileSize);
			}
			catch (Exception e) {
				cerr << argv[0] << ": " << e.what() << endl;
				unlink(output_filename.c_str());
				delete(encoderSpec);

				return STATUS_ERROR;
			}

			delete(encoderSpec);
		}
		else {			// PM_DECOMPRESS | PM_TEST
		    NCompress::NLZMA::CDecoder *decoderSpec =
		        new NCompress::NLZMA::CDecoder;

			try {
				decode(decoderSpec, inStream, outStream);
			}
			catch (Exception e) {
				cerr << argv[0] << ": " << e.what() << endl;
				unlink(output_filename.c_str());
				delete(decoderSpec);

				return STATUS_ERROR;
			}

			delete(decoderSpec);
		}

		struct stat in_stats, out_stats;
		const bool in_stats_ok = !fstat(inhandle, &in_stats);
		const bool out_stats_ok = verbosity > 0 ? !fstat(outhandle, &out_stats) : false;

		/* Set permissions and owners. */
		if ( (program_mode == PM_COMPRESS || program_mode == PM_DECOMPRESS )
				&& (!stdinput && !stdoutput) ) {

			if (in_stats_ok) {
				(void)fchown(outhandle, in_stats.st_uid, -1);
				
				mode_t mode;
				if (fchown(outhandle, -1, in_stats.st_gid)) {
					// Setting the GID of the file failed.
					// We can still safely copy some
					// permissions: `group' must be at
					// least as strict as `other' and
					// also vice versa.
					//
					// NOTE: After this, the owner of the
					// source file may get additional
					// permissions. This shouldn't be too
					// bad, because the owner would have
					// had permission to chmod the
					// original file anyway.
					mode = ((in_stats.st_mode & 0070) >> 3)
						& (in_stats.st_mode & 0007);
					mode = (in_stats.st_mode & 0700) | (mode << 3) | mode;
				} else {
					mode = in_stats.st_mode & 0777;
				}
				
				(void)fchmod(outhandle, mode);

				my_utimes(output_filename.c_str(), outhandle,
					in_stats.st_atime, in_stats.st_mtime);
			}

			// Check that closing the output stream succeeds.
			// Note that this is no-op for stdout; we don't
			// need to handle it separately here.
			if (outStream->Close()) {
				unlink(output_filename.c_str());
				cerr << output_filename << ": write error\n";
				continue;
			}

			// Output closed successfully. Now we can remove the input
			// file unless --keep was specified.
			if (!keep)
				unlink(filenames[i].c_str());
		}

		if (verbosity > 0) {
			if (stdoutput) {
				cerr << filenames[i] << ":\t ";
				cerr << (program_mode == PM_DECOMPRESS
					 ? "decoded successfully"
					 : "encoded successfully")
					<< endl;
			}

			else if (in_stats_ok && out_stats_ok) {
				char buf[10] = { 0 };

				if (program_mode == PM_DECOMPRESS)
					snprintf(buf, 10, "%.1f%%",
						(1.0 - (double)in_stats.st_size
						/ (double)out_stats.st_size) * 100.0);
				if (program_mode == PM_COMPRESS)
					snprintf(buf, 10, "%.1f%%",
						(1.0 - (double)out_stats.st_size
						/ (double)in_stats.st_size) * 100.0);

				string ratio = buf;
				cerr << pretty_print_status(filenames[i], output_filename,
						ratio)
					<< endl;
			}
		}
	}

	cout.flush();
	if (!cout.good() || close(STDOUT_FILENO)) {
		cerr << "Error writing to stdout\n";
		return STATUS_ERROR;
	}
	
	cerr.flush();
	if (!cerr.good() || close(STDERR_FILENO))
		return STATUS_ERROR;

	if (warning)
		return STATUS_WARNING;

	return STATUS_OK;
}