gzipcmd.cpp

Last change on this file was 106061, checked in by vboxsync, 3 months ago
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1	/* $Id: gzipcmd.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* IPRT - GZIP Utility.
4	*/
5
6	/*
7	* Copyright (C) 2010-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* The contents of this file may alternatively be used under the terms
26	* of the Common Development and Distribution License Version 1.0
27	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28	* in the VirtualBox distribution, in which case the provisions of the
29	* CDDL are applicable instead of those of the GPL.
30	*
31	* You may elect to license modified versions of this file under the
32	* terms and conditions of either the GPL or the CDDL or both.
33	*
34	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35	*/
36
37
38	/*********************************************************************************************************************************
39	* Header Files *
40	*********************************************************************************************************************************/
41	#include <iprt/zip.h>
42
43	#include <iprt/buildconfig.h>
44	#include <iprt/err.h>
45	#include <iprt/file.h>
46	#include <iprt/getopt.h>
47	#include <iprt/initterm.h>
48	#include <iprt/message.h>
49	#include <iprt/param.h>
50	#include <iprt/path.h>
51	#include <iprt/stream.h>
52	#include <iprt/string.h>
53	#include <iprt/vfs.h>
54	#include <iprt/zip.h>
55
56
57	/*********************************************************************************************************************************
58	* Structures and Typedefs *
59	*********************************************************************************************************************************/
60	/**
61	* Gzip command options.
62	*/
63	typedef struct RTGZIPCMDOPTS
64	{
65	bool fAscii;
66	bool fStdOut;
67	bool fDecompress;
68	bool fForce;
69	bool fKeep;
70	bool fList;
71	bool fName;
72	bool fQuiet;
73	bool fRecursive;
74	const char *pszSuff;
75	bool fTest;
76	unsigned uLevel;
77	/** The current output filename (for deletion). */
78	char szOutput[RTPATH_MAX];
79	/** The current input filename (for deletion and messages). */
80	const char *pszInput;
81	} RTGZIPCMDOPTS;
82	/** Pointer to GZIP options. */
83	typedef RTGZIPCMDOPTS *PRTGZIPCMDOPTS;
84	/** Pointer to const GZIP options. */
85	typedef RTGZIPCMDOPTS const *PCRTGZIPCMDOPTS;
86
87
88
89	/**
90	* Checks if the given standard handle is a TTY.
91	*
92	* @returns true / false
93	* @param enmStdHandle The standard handle.
94	*/
95	static bool gzipIsStdHandleATty(RTHANDLESTD enmStdHandle)
96	{
97	/** @todo Add isatty() to IPRT. */
98	RT_NOREF1(enmStdHandle);
99	return false;
100	}
101
102
103	/**
104	* Pushes data from the input to the output I/O streams.
105	*
106	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE.
107	* @param hVfsSrc The source I/O stream.
108	* @param hVfsDst The destination I/O stream.
109	*/
110	static RTEXITCODE gzipPush(RTVFSIOSTREAM hVfsSrc, RTVFSIOSTREAM hVfsDst)
111	{
112	for (;;)
113	{
114	uint8_t abBuf[_64K];
115	size_t cbRead;
116	int rc = RTVfsIoStrmRead(hVfsSrc, abBuf, sizeof(abBuf), true /fBlocking/, &cbRead);
117	if (RT_FAILURE(rc))
118	return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTVfsIoStrmRead failed: %Rrc", rc);
119	if (rc == VINF_EOF && cbRead == 0)
120	return RTEXITCODE_SUCCESS;
121
122	rc = RTVfsIoStrmWrite(hVfsDst, abBuf, cbRead, true /fBlocking/, NULL /cbWritten/);
123	if (RT_FAILURE(rc))
124	return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTVfsIoStrmWrite failed: %Rrc", rc);
125	}
126	}
127
128
129	/**
130	* Pushes the bytes from the input to the output stream, flushes the output
131	* stream and closes both of them.
132	*
133	* On failure, we will delete the output file, if it's a file. The input file
134	* may be deleted, if we're not told to keep it (--keep, --to-stdout).
135	*
136	* @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE.
137	* @param phVfsSrc The input stream. Set to NIL if closed.
138	* @param pOpts The options.
139	* @param phVfsDst The output stream. Set to NIL if closed.
140	*/
141	static RTEXITCODE gzipPushFlushAndClose(PRTVFSIOSTREAM phVfsSrc, PCRTGZIPCMDOPTS pOpts, PRTVFSIOSTREAM phVfsDst)
142	{
143	/*
144	* Push bytes, flush and close the streams.
145	*/
146	RTEXITCODE rcExit = gzipPush(phVfsSrc, phVfsDst);
147
148	RTVfsIoStrmRelease(*phVfsSrc);
149	*phVfsSrc = NIL_RTVFSIOSTREAM;
150
151	int rc = RTVfsIoStrmFlush(*phVfsDst);
152	if (RT_FAILURE(rc) && rc != VERR_INVALID_PARAMETER)
153	rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to flush the output file: %Rrc", rc);
154	RTVfsIoStrmRelease(*phVfsDst);
155	*phVfsDst = NIL_RTVFSIOSTREAM;
156
157	/*
158	* Do the cleaning up, if needed. Remove the input file, if that's the
159	* desire of the user, or remove the output file on failure.
160	*/
161	if (!pOpts->fStdOut)
162	{
163	if (rcExit == RTEXITCODE_SUCCESS)
164	{
165	if (!pOpts->fKeep)
166	{
167	rc = RTFileDelete(pOpts->pszInput);
168	if (RT_FAILURE(rc))
169	rcExit = RTMsgErrorExit(RTEXITCODE_FAILURE, "Failed to delete '%s': %Rrc", pOpts->pszInput, rc);
170	}
171	}
172	else
173	{
174	rc = RTFileDelete(pOpts->szOutput);
175	if (RT_FAILURE(rc))
176	RTMsgError("Failed to delete '%s': %Rrc", pOpts->szOutput, rc);
177	}
178	}
179
180	return rcExit;
181	}
182
183
184	/**
185	* Compresses one stream to another.
186	*
187	* @returns Exit code.
188	* @param phVfsSrc The input stream. Set to NIL if closed.
189	* @param pOpts The options.
190	* @param phVfsDst The output stream. Set to NIL if closed.
191	*/
192	static RTEXITCODE gzipCompressFile(PRTVFSIOSTREAM phVfsSrc, PCRTGZIPCMDOPTS pOpts, PRTVFSIOSTREAM phVfsDst)
193	{
194	/*
195	* Attach the compressor to the output stream.
196	*/
197	RTVFSIOSTREAM hVfsGzip;
198	int rc = RTZipGzipCompressIoStream(phVfsDst, 0 /fFlags*/, pOpts->uLevel, &hVfsGzip);
199	if (RT_FAILURE(rc))
200	return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTZipGzipCompressIoStream failed: %Rrc", rc);
201
202	uint32_t cRefs = RTVfsIoStrmRelease(*phVfsDst);
203	Assert(cRefs > 0); RT_NOREF_PV(cRefs);
204	*phVfsDst = hVfsGzip;
205
206	return gzipPushFlushAndClose(phVfsSrc, pOpts, phVfsDst);
207	}
208
209
210	/**
211	* Attach a decompressor to the given source stream, replacing and releasing the
212	* input handle with the decompressor.
213	*
214	* @returns Exit code.
215	* @param phVfsSrc The input stream. Replaced on success.
216	*/
217	static RTEXITCODE gzipSetupDecompressor(PRTVFSIOSTREAM phVfsSrc)
218	{
219	/*
220	* Attach the decompressor to the input stream.
221	*/
222	uint32_t fFlags = 0;
223	fFlags \|= RTZIPGZIPDECOMP_F_ALLOW_ZLIB_HDR;
224	RTVFSIOSTREAM hVfsGunzip;
225	int rc = RTZipGzipDecompressIoStream(*phVfsSrc, fFlags, &hVfsGunzip);
226	if (RT_FAILURE(rc))
227	return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTZipGzipDecompressIoStream failed: %Rrc", rc);
228
229	uint32_t cRefs = RTVfsIoStrmRelease(*phVfsSrc);
230	Assert(cRefs > 0); RT_NOREF_PV(cRefs);
231	*phVfsSrc = hVfsGunzip;
232
233	#if 0
234	/* This is a good place for testing stuff. */
235	rc = RTVfsCreateReadAheadForIoStream(*phVfsSrc, 0, 16, _4K+1, &hVfsGunzip);
236	AssertRC(rc);
237	if (RT_SUCCESS(rc))
238	{
239	uint32_t cRefs = RTVfsIoStrmRelease(*phVfsSrc);
240	Assert(cRefs > 0);
241	*phVfsSrc = hVfsGunzip;
242	}
243	#endif
244
245	return RTEXITCODE_SUCCESS;
246	}
247
248
249	/**
250	* Decompresses one stream to another.
251	*
252	* @returns Exit code.
253	* @param phVfsSrc The input stream. Set to NIL if closed.
254	* @param pOpts The options.
255	* @param phVfsDst The output stream. Set to NIL if closed.
256	*/
257	static RTEXITCODE gzipDecompressFile(PRTVFSIOSTREAM phVfsSrc, PCRTGZIPCMDOPTS pOpts, PRTVFSIOSTREAM phVfsDst)
258	{
259	RTEXITCODE rcExit = gzipSetupDecompressor(phVfsSrc);
260	if (rcExit == RTEXITCODE_SUCCESS)
261	rcExit = gzipPushFlushAndClose(phVfsSrc, pOpts, phVfsDst);
262	return rcExit;
263	}
264
265
266	/**
267	* For testing the archive (todo).
268	*
269	* @returns Exit code.
270	* @param phVfsSrc The input stream. Set to NIL if closed.
271	* @param pOpts The options.
272	*/
273	static RTEXITCODE gzipTestFile(PRTVFSIOSTREAM phVfsSrc, PCRTGZIPCMDOPTS pOpts)
274	{
275	RT_NOREF_PV(pOpts);
276
277	/*
278	* Read the whole stream.
279	*/
280	RTEXITCODE rcExit = gzipSetupDecompressor(phVfsSrc);
281	if (rcExit == RTEXITCODE_SUCCESS)
282	{
283	for (;;)
284	{
285	uint8_t abBuf[_64K];
286	size_t cbRead;
287	int rc = RTVfsIoStrmRead(phVfsSrc, abBuf, sizeof(abBuf), true /fBlocking*/, &cbRead);
288	if (RT_FAILURE(rc))
289	return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTVfsIoStrmRead failed: %Rrc", rc);
290	if (rc == VINF_EOF && cbRead == 0)
291	return RTEXITCODE_SUCCESS;
292	}
293	}
294	return rcExit;
295	}
296
297
298	static RTEXITCODE gzipListFile(PRTVFSIOSTREAM phVfsSrc, PCRTGZIPCMDOPTS pOpts)
299	{
300	RT_NOREF2(phVfsSrc, pOpts);
301	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Listing has not been implemented");
302	}
303
304
305	/**
306	* Opens the output file.
307	*
308	* @returns Command exit, error messages written using RTMsg*.
309	*
310	* @param pszFile The input filename.
311	* @param pOpts The options, szOutput will be filled in by this
312	* function on success.
313	* @param phVfsIos Where to return the output stream handle.
314	*
315	* @remarks This is actually not quite the way we need to do things.
316	*
317	* First of all, we need a GZIP file system stream for a real GZIP
318	* implementation, since there may be more than one file in the gzipped
319	* file.
320	*
321	* Second, we need to open the output files as we encounter files in the input
322	* file system stream. The gzip format contains timestamp and usually a
323	* filename, the default is to use this name (see the --no-name
324	* option).
325	*/
326	static RTEXITCODE gzipOpenOutput(const char *pszFile, PRTGZIPCMDOPTS pOpts, PRTVFSIOSTREAM phVfsIos)
327	{
328	int rc;
329	if (!strcmp(pszFile, "-") \|\| pOpts->fStdOut)
330	{
331	strcpy(pOpts->szOutput, "-");
332
333	if ( !pOpts->fForce
334	&& !pOpts->fDecompress
335	&& gzipIsStdHandleATty(RTHANDLESTD_OUTPUT))
336	return RTMsgErrorExit(RTEXITCODE_SYNTAX,
337	"Yeah, right. I'm not writing any compressed data to the terminal without --force.\n");
338
339	rc = RTVfsIoStrmFromStdHandle(RTHANDLESTD_OUTPUT,
340	RTFILE_O_WRITE \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE,
341	true /fLeaveOpen/,
342	phVfsIos);
343	if (RT_FAILURE(rc))
344	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error opening standard output: %Rrc", rc);
345	}
346	else
347	{
348	Assert(!RTVfsChainIsSpec(pszFile));
349
350	/* Construct an output filename. */
351	rc = RTStrCopy(pOpts->szOutput, sizeof(pOpts->szOutput), pszFile);
352	if (RT_FAILURE(rc))
353	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error constructing output filename: %Rrc", rc);
354	if (pOpts->fDecompress)
355	{
356	/** @todo take filename from archive? */
357	size_t cchSuff = strlen(pOpts->pszSuff); Assert(cchSuff > 0);
358	size_t cch = strlen(pOpts->szOutput);
359	if ( cch <= cchSuff
360	\|\| strcmp(&pOpts->szOutput[cch - cchSuff], pOpts->pszSuff))
361	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Input file does not end with: '%s'", pOpts->pszSuff);
362	pOpts->szOutput[cch - cchSuff] = '\0';
363	if (!RTPathFilename(pOpts->szOutput))
364	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error constructing output filename: Input file name is all suffix.");
365	}
366	else
367	{
368	rc = RTStrCat(pOpts->szOutput, sizeof(pOpts->szOutput), pOpts->pszSuff);
369	if (RT_FAILURE(rc))
370	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error constructing output filename: %Rrc", rc);
371	}
372
373	/* Open the output file. */
374	uint32_t fOpen = RTFILE_O_WRITE \| RTFILE_O_DENY_WRITE;
375	if (pOpts->fForce)
376	fOpen \|= RTFILE_O_CREATE_REPLACE;
377	else
378	fOpen \|= RTFILE_O_CREATE;
379	rc = RTVfsIoStrmOpenNormal(pOpts->szOutput, fOpen, phVfsIos);
380	if (RT_FAILURE(rc))
381	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error opening output file '%s': %Rrc", pOpts->szOutput, rc);
382	}
383
384	return RTEXITCODE_SUCCESS;
385	}
386
387
388	/**
389	* Opens the input file.
390	*
391	* @returns Command exit, error messages written using RTMsg*.
392	*
393	* @param pszFile The input filename.
394	* @param pOpts The options, szOutput will be filled in by this
395	* function on success.
396	* @param phVfsIos Where to return the input stream handle.
397	*/
398	static RTEXITCODE gzipOpenInput(const char *pszFile, PRTGZIPCMDOPTS pOpts, PRTVFSIOSTREAM phVfsIos)
399	{
400	int rc;
401
402	pOpts->pszInput = pszFile;
403	if (!strcmp(pszFile, "-"))
404	{
405	if ( !pOpts->fForce
406	&& pOpts->fDecompress
407	&& gzipIsStdHandleATty(RTHANDLESTD_OUTPUT))
408	return RTMsgErrorExit(RTEXITCODE_SYNTAX,
409	"Yeah, right. I'm not reading any compressed data from the terminal without --force.\n");
410
411	rc = RTVfsIoStrmFromStdHandle(RTHANDLESTD_INPUT,
412	RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE,
413	true /fLeaveOpen/,
414	phVfsIos);
415	if (RT_FAILURE(rc))
416	return RTMsgErrorExit(RTEXITCODE_FAILURE, "Error opening standard input: %Rrc", rc);
417	}
418	else
419	{
420	uint32_t offError = 0;
421	RTERRINFOSTATIC ErrInfo;
422	rc = RTVfsChainOpenIoStream(pszFile, RTFILE_O_READ \| RTFILE_O_OPEN \| RTFILE_O_DENY_WRITE,
423	phVfsIos, &offError, RTErrInfoInitStatic(&ErrInfo));
424	if (RT_FAILURE(rc))
425	return RTVfsChainMsgErrorExitFailure("RTVfsChainOpenIoStream", pszFile, rc, offError, &ErrInfo.Core);
426	}
427
428	return RTEXITCODE_SUCCESS;
429
430	}
431
432
433	/**
434	* A mini GZIP program.
435	*
436	* @returns Program exit code.
437	*
438	* @param cArgs The number of arguments.
439	* @param papszArgs The argument vector. (Note that this may be
440	* reordered, so the memory must be writable.)
441	*/
442	RTDECL(RTEXITCODE) RTZipGzipCmd(unsigned cArgs, char **papszArgs)
443	{
444
445	/*
446	* Parse the command line.
447	*/
448	static const RTGETOPTDEF s_aOptions[] =
449	{
450	{ "--ascii", 'a', RTGETOPT_REQ_NOTHING },
451	{ "--stdout", 'c', RTGETOPT_REQ_NOTHING },
452	{ "--to-stdout", 'c', RTGETOPT_REQ_NOTHING },
453	{ "--decompress", 'd', RTGETOPT_REQ_NOTHING },
454	{ "--uncompress", 'd', RTGETOPT_REQ_NOTHING },
455	{ "--force", 'f', RTGETOPT_REQ_NOTHING },
456	{ "--keep", 'k', RTGETOPT_REQ_NOTHING },
457	{ "--list", 'l', RTGETOPT_REQ_NOTHING },
458	{ "--no-name", 'n', RTGETOPT_REQ_NOTHING },
459	{ "--name", 'N', RTGETOPT_REQ_NOTHING },
460	{ "--quiet", 'q', RTGETOPT_REQ_NOTHING },
461	{ "--recursive", 'r', RTGETOPT_REQ_NOTHING },
462	{ "--suffix", 'S', RTGETOPT_REQ_STRING },
463	{ "--test", 't', RTGETOPT_REQ_NOTHING },
464	{ "--verbose", 'v', RTGETOPT_REQ_NOTHING },
465	{ "--fast", '1', RTGETOPT_REQ_NOTHING },
466	{ "-1", '1', RTGETOPT_REQ_NOTHING },
467	{ "-2", '2', RTGETOPT_REQ_NOTHING },
468	{ "-3", '3', RTGETOPT_REQ_NOTHING },
469	{ "-4", '4', RTGETOPT_REQ_NOTHING },
470	{ "-5", '5', RTGETOPT_REQ_NOTHING },
471	{ "-6", '6', RTGETOPT_REQ_NOTHING },
472	{ "-7", '7', RTGETOPT_REQ_NOTHING },
473	{ "-8", '8', RTGETOPT_REQ_NOTHING },
474	{ "-9", '9', RTGETOPT_REQ_NOTHING },
475	{ "--best", '9', RTGETOPT_REQ_NOTHING }
476	};
477
478	RTGZIPCMDOPTS Opts;
479	Opts.fAscii = false;
480	Opts.fStdOut = false;
481	Opts.fDecompress = false;
482	Opts.fForce = false;
483	Opts.fKeep = false;
484	Opts.fList = false;
485	Opts.fName = true;
486	Opts.fQuiet = false;
487	Opts.fRecursive = false;
488	Opts.pszSuff = ".gz";
489	Opts.fTest = false;
490	Opts.uLevel = 6;
491
492	RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
493	unsigned cProcessed = 0;
494	//RTVFSIOSTREAM hVfsStdOut= NIL_RTVFSIOSTREAM;
495
496	RTGETOPTSTATE GetState;
497	int rc = RTGetOptInit(&GetState, cArgs, papszArgs, s_aOptions, RT_ELEMENTS(s_aOptions), 1,
498	RTGETOPTINIT_FLAGS_OPTS_FIRST);
499	if (RT_FAILURE(rc))
500	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "RTGetOptInit: %Rrc", rc);
501
502	for (;;)
503	{
504	RTGETOPTUNION ValueUnion;
505	int chOpt = RTGetOpt(&GetState, &ValueUnion);
506	switch (chOpt)
507	{
508	case 0:
509	/*
510	* If we've processed any files we're done. Otherwise take
511	* input from stdin and write the output to stdout.
512	*/
513	if (cProcessed > 0)
514	return rcExit;
515	ValueUnion.psz = "-";
516	Opts.fStdOut = true;
517	RT_FALL_THRU();
518	case VINF_GETOPT_NOT_OPTION:
519	{
520	if (!*Opts.pszSuff && !Opts.fStdOut)
521	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "The --suffix option specified an empty string");
522	if (!Opts.fStdOut && RTVfsChainIsSpec(ValueUnion.psz))
523	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "Must use standard out with VFS chain specifications");
524	if ( Opts.fName
525	&& !Opts.fList
526	&& !Opts.fTest
527	&& !Opts.fDecompress)
528	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "The --name option has not yet been implemented. Use --no-name.");
529	if (Opts.fAscii)
530	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "The --ascii option has not yet been implemented.");
531	if (Opts.fRecursive)
532	return RTMsgErrorExit(RTEXITCODE_SYNTAX, "The --recursive option has not yet been implemented.");
533
534	/* Open the input file. */
535	RTVFSIOSTREAM hVfsSrc;
536	RTEXITCODE rcExit2 = gzipOpenInput(ValueUnion.psz, &Opts, &hVfsSrc);
537	if (rcExit2 == RTEXITCODE_SUCCESS)
538	{
539	if (Opts.fList)
540	rcExit2 = gzipListFile(&hVfsSrc, &Opts);
541	else if (Opts.fTest)
542	rcExit2 = gzipTestFile(&hVfsSrc, &Opts);
543	else
544	{
545	RTVFSIOSTREAM hVfsDst;
546	rcExit2 = gzipOpenOutput(ValueUnion.psz, &Opts, &hVfsDst);
547	if (rcExit2 == RTEXITCODE_SUCCESS)
548	{
549	if (Opts.fDecompress)
550	rcExit2 = gzipDecompressFile(&hVfsSrc, &Opts, &hVfsDst);
551	else
552	rcExit2 = gzipCompressFile(&hVfsSrc, &Opts, &hVfsDst);
553	RTVfsIoStrmRelease(hVfsDst);
554	}
555	}
556	RTVfsIoStrmRelease(hVfsSrc);
557	}
558	if (rcExit2 != RTEXITCODE_SUCCESS)
559	rcExit = rcExit2;
560
561	cProcessed++;
562	break;
563	}
564
565	case 'a': Opts.fAscii = true; break;
566	case 'c':
567	Opts.fStdOut = true;
568	Opts.fKeep = true;
569	break;
570	case 'd': Opts.fDecompress = true; break;
571	case 'f': Opts.fForce = true; break;
572	case 'k': Opts.fKeep = true; break;
573	case 'l': Opts.fList = true; break;
574	case 'n': Opts.fName = false; break;
575	case 'N': Opts.fName = true; break;
576	case 'q': Opts.fQuiet = true; break;
577	case 'r': Opts.fRecursive = true; break;
578	case 'S': Opts.pszSuff = ValueUnion.psz; break;
579	case 't': Opts.fTest = true; break;
580	case 'v': Opts.fQuiet = false; break;
581	case '1': Opts.uLevel = 1; break;
582	case '2': Opts.uLevel = 2; break;
583	case '3': Opts.uLevel = 3; break;
584	case '4': Opts.uLevel = 4; break;
585	case '5': Opts.uLevel = 5; break;
586	case '6': Opts.uLevel = 6; break;
587	case '7': Opts.uLevel = 7; break;
588	case '8': Opts.uLevel = 8; break;
589	case '9': Opts.uLevel = 9; break;
590
591	case 'h':
592	RTPrintf("Usage: to be written\nOption dump:\n");
593	for (unsigned i = 0; i < RT_ELEMENTS(s_aOptions); i++)
594	RTPrintf(" -%c,%s\n", s_aOptions[i].iShort, s_aOptions[i].pszLong);
595	return RTEXITCODE_SUCCESS;
596
597	case 'V':
598	RTPrintf("%sr%d\n", RTBldCfgVersion(), RTBldCfgRevision());
599	return RTEXITCODE_SUCCESS;
600
601	default:
602	return RTGetOptPrintError(chOpt, &ValueUnion);
603	}
604	}
605	}
606

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source: vbox/trunk/src/VBox/Runtime/common/zip/gzipcmd.cpp

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