| 1 | /* $Id: gzipcmd.cpp 99013 2023-03-17 14:46:51Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - GZIP Utility.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2010-2023 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 |
|
|---|
