diff options
Diffstat (limited to 'winsup/bz2lib/bzip2.c')
| -rw-r--r-- | winsup/bz2lib/bzip2.c | 2044 |
1 files changed, 0 insertions, 2044 deletions
diff --git a/winsup/bz2lib/bzip2.c b/winsup/bz2lib/bzip2.c deleted file mode 100644 index 56adfdcbc..000000000 --- a/winsup/bz2lib/bzip2.c +++ /dev/null @@ -1,2044 +0,0 @@ - -/*-----------------------------------------------------------*/ -/*--- A block-sorting, lossless compressor bzip2.c ---*/ -/*-----------------------------------------------------------*/ - -/*-- - This file is a part of bzip2 and/or libbzip2, a program and - library for lossless, block-sorting data compression. - - Copyright (C) 1996-2000 Julian R Seward. All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - - 1. Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - 2. The origin of this software must not be misrepresented; you must - not claim that you wrote the original software. If you use this - software in a product, an acknowledgment in the product - documentation would be appreciated but is not required. - - 3. Altered source versions must be plainly marked as such, and must - not be misrepresented as being the original software. - - 4. The name of the author may not be used to endorse or promote - products derived from this software without specific prior written - permission. - - THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS - OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY - DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE - GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - - Julian Seward, Cambridge, UK. - jseward@acm.org - bzip2/libbzip2 version 1.0 of 21 March 2000 - - This program is based on (at least) the work of: - Mike Burrows - David Wheeler - Peter Fenwick - Alistair Moffat - Radford Neal - Ian H. Witten - Robert Sedgewick - Jon L. Bentley - - For more information on these sources, see the manual. ---*/ - - -/*----------------------------------------------------*/ -/*--- IMPORTANT ---*/ -/*----------------------------------------------------*/ - -/*-- - WARNING: - This program and library (attempts to) compress data by - performing several non-trivial transformations on it. - Unless you are 100% familiar with *all* the algorithms - contained herein, and with the consequences of modifying them, - you should NOT meddle with the compression or decompression - machinery. Incorrect changes can and very likely *will* - lead to disasterous loss of data. - - DISCLAIMER: - I TAKE NO RESPONSIBILITY FOR ANY LOSS OF DATA ARISING FROM THE - USE OF THIS PROGRAM, HOWSOEVER CAUSED. - - Every compression of a file implies an assumption that the - compressed file can be decompressed to reproduce the original. - Great efforts in design, coding and testing have been made to - ensure that this program works correctly. However, the - complexity of the algorithms, and, in particular, the presence - of various special cases in the code which occur with very low - but non-zero probability make it impossible to rule out the - possibility of bugs remaining in the program. DO NOT COMPRESS - ANY DATA WITH THIS PROGRAM AND/OR LIBRARY UNLESS YOU ARE PREPARED - TO ACCEPT THE POSSIBILITY, HOWEVER SMALL, THAT THE DATA WILL - NOT BE RECOVERABLE. - - That is not to say this program is inherently unreliable. - Indeed, I very much hope the opposite is true. bzip2/libbzip2 - has been carefully constructed and extensively tested. - - PATENTS: - To the best of my knowledge, bzip2/libbzip2 does not use any - patented algorithms. However, I do not have the resources - available to carry out a full patent search. Therefore I cannot - give any guarantee of the above statement. ---*/ - - - -/*----------------------------------------------------*/ -/*--- and now for something much more pleasant :-) ---*/ -/*----------------------------------------------------*/ - -/*---------------------------------------------*/ -/*-- - Place a 1 beside your platform, and 0 elsewhere. ---*/ - -/*-- - Generic 32-bit Unix. - Also works on 64-bit Unix boxes. ---*/ -#define BZ_UNIX 1 - -/*-- - Win32, as seen by Jacob Navia's excellent - port of (Chris Fraser & David Hanson)'s excellent - lcc compiler. ---*/ -#define BZ_LCCWIN32 0 - -#if defined(_WIN32) && !defined(__CYGWIN__) -#undef BZ_LCCWIN32 -#define BZ_LCCWIN32 1 -#undef BZ_UNIX -#define BZ_UNIX 0 -#endif - - -/*---------------------------------------------*/ -/*-- - Some stuff for all platforms. ---*/ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <signal.h> -#include <math.h> -#include <errno.h> -#include <ctype.h> -#include "bzlib.h" - -#define ERROR_IF_EOF(i) { if ((i) == EOF) ioError(); } -#define ERROR_IF_NOT_ZERO(i) { if ((i) != 0) ioError(); } -#define ERROR_IF_MINUS_ONE(i) { if ((i) == (-1)) ioError(); } - - -/*---------------------------------------------*/ -/*-- - Platform-specific stuff. ---*/ - -#if BZ_UNIX -# include <sys/types.h> -# include <utime.h> -# include <unistd.h> -# include <sys/stat.h> -# include <sys/times.h> - -# define PATH_SEP '/' -# define MY_LSTAT lstat -# define MY_S_IFREG S_ISREG -# define MY_STAT stat - -# define APPEND_FILESPEC(root, name) \ - root=snocString((root), (name)) - -# define APPEND_FLAG(root, name) \ - root=snocString((root), (name)) - -# define SET_BINARY_MODE(fd) /**/ - -# ifdef __GNUC__ -# define NORETURN __attribute__ ((noreturn)) -# else -# define NORETURN /**/ -# endif -# ifdef __DJGPP__ -# include <io.h> -# include <fcntl.h> -# undef MY_LSTAT -# define MY_LSTAT stat -# undef SET_BINARY_MODE -# define SET_BINARY_MODE(fd) \ - do { \ - int retVal = setmode ( fileno ( fd ), \ - O_BINARY ); \ - ERROR_IF_MINUS_ONE ( retVal ); \ - } while ( 0 ) -# endif -# ifdef __CYGWIN__ -# include <io.h> -# include <fcntl.h> -# undef SET_BINARY_MODE -# define SET_BINARY_MODE(fd) \ - do { \ - int retVal = setmode ( fileno ( fd ), \ - O_BINARY ); \ - ERROR_IF_MINUS_ONE ( retVal ); \ - } while ( 0 ) -# endif -#endif - - - -#if BZ_LCCWIN32 -# include <io.h> -# include <fcntl.h> -# include <sys\stat.h> - -# define NORETURN /**/ -# define PATH_SEP '\\' -# define MY_LSTAT _stat -# define MY_STAT _stat -# define MY_S_IFREG(x) ((x) & _S_IFREG) - -# define APPEND_FLAG(root, name) \ - root=snocString((root), (name)) - -# if 0 - /*-- lcc-win32 seems to expand wildcards itself --*/ -# define APPEND_FILESPEC(root, spec) \ - do { \ - if ((spec)[0] == '-') { \ - root = snocString((root), (spec)); \ - } else { \ - struct _finddata_t c_file; \ - long hFile; \ - hFile = _findfirst((spec), &c_file); \ - if ( hFile == -1L ) { \ - root = snocString ((root), (spec)); \ - } else { \ - int anInt = 0; \ - while ( anInt == 0 ) { \ - root = snocString((root), \ - &c_file.name[0]); \ - anInt = _findnext(hFile, &c_file); \ - } \ - } \ - } \ - } while ( 0 ) -# else -# define APPEND_FILESPEC(root, name) \ - root = snocString ((root), (name)) -# endif - -# define SET_BINARY_MODE(fd) \ - do { \ - int retVal = setmode ( fileno ( fd ), \ - O_BINARY ); \ - ERROR_IF_MINUS_ONE ( retVal ); \ - } while ( 0 ) - -#endif - - -/*---------------------------------------------*/ -/*-- - Some more stuff for all platforms :-) ---*/ - -typedef char Char; -typedef unsigned char Bool; -typedef unsigned char UChar; -typedef int Int32; -typedef unsigned int UInt32; -typedef short Int16; -typedef unsigned short UInt16; - -#define True ((Bool)1) -#define False ((Bool)0) - -/*-- - IntNative is your platform's `native' int size. - Only here to avoid probs with 64-bit platforms. ---*/ -typedef int IntNative; - - -/*---------------------------------------------------*/ -/*--- Misc (file handling) data decls ---*/ -/*---------------------------------------------------*/ - -Int32 verbosity; -Bool keepInputFiles, smallMode, deleteOutputOnInterrupt; -Bool forceOverwrite, testFailsExist, unzFailsExist, noisy; -Int32 numFileNames, numFilesProcessed, blockSize100k; -Int32 exitValue; - -/*-- source modes; F==file, I==stdin, O==stdout --*/ -#define SM_I2O 1 -#define SM_F2O 2 -#define SM_F2F 3 - -/*-- operation modes --*/ -#define OM_Z 1 -#define OM_UNZ 2 -#define OM_TEST 3 - -Int32 opMode; -Int32 srcMode; - -#define FILE_NAME_LEN 1034 - -Int32 longestFileName; -Char inName [FILE_NAME_LEN]; -Char outName[FILE_NAME_LEN]; -Char tmpName[FILE_NAME_LEN]; -Char *progName; -Char progNameReally[FILE_NAME_LEN]; -FILE *outputHandleJustInCase; -Int32 workFactor; - -static void panic ( Char* ) NORETURN; -static void ioError ( void ) NORETURN; -static void outOfMemory ( void ) NORETURN; -static void configError ( void ) NORETURN; -static void crcError ( void ) NORETURN; -static void cleanUpAndFail ( Int32 ) NORETURN; -static void compressedStreamEOF ( void ) NORETURN; - -static void copyFileName ( Char*, Char* ); -static void* myMalloc ( Int32 ); - - - -/*---------------------------------------------------*/ -/*--- An implementation of 64-bit ints. Sigh. ---*/ -/*--- Roll on widespread deployment of ANSI C9X ! ---*/ -/*---------------------------------------------------*/ - -typedef - struct { UChar b[8]; } - UInt64; - -static -void uInt64_from_UInt32s ( UInt64* n, UInt32 lo32, UInt32 hi32 ) -{ - n->b[7] = (UChar)((hi32 >> 24) & 0xFF); - n->b[6] = (UChar)((hi32 >> 16) & 0xFF); - n->b[5] = (UChar)((hi32 >> 8) & 0xFF); - n->b[4] = (UChar) (hi32 & 0xFF); - n->b[3] = (UChar)((lo32 >> 24) & 0xFF); - n->b[2] = (UChar)((lo32 >> 16) & 0xFF); - n->b[1] = (UChar)((lo32 >> 8) & 0xFF); - n->b[0] = (UChar) (lo32 & 0xFF); -} - -static -double uInt64_to_double ( UInt64* n ) -{ - Int32 i; - double base = 1.0; - double sum = 0.0; - for (i = 0; i < 8; i++) { - sum += base * (double)(n->b[i]); - base *= 256.0; - } - return sum; -} - -static -void uInt64_add ( UInt64* src, UInt64* dst ) -{ - Int32 i; - Int32 carry = 0; - for (i = 0; i < 8; i++) { - carry += ( ((Int32)src->b[i]) + ((Int32)dst->b[i]) ); - dst->b[i] = (UChar)(carry & 0xFF); - carry >>= 8; - } -} - -static -void uInt64_sub ( UInt64* src, UInt64* dst ) -{ - Int32 t, i; - Int32 borrow = 0; - for (i = 0; i < 8; i++) { - t = ((Int32)dst->b[i]) - ((Int32)src->b[i]) - borrow; - if (t < 0) { - dst->b[i] = (UChar)(t + 256); - borrow = 1; - } else { - dst->b[i] = (UChar)t; - borrow = 0; - } - } -} - -static -void uInt64_mul ( UInt64* a, UInt64* b, UInt64* r_hi, UInt64* r_lo ) -{ - UChar sum[16]; - Int32 ia, ib, carry; - for (ia = 0; ia < 16; ia++) sum[ia] = 0; - for (ia = 0; ia < 8; ia++) { - carry = 0; - for (ib = 0; ib < 8; ib++) { - carry += ( ((Int32)sum[ia+ib]) - + ((Int32)a->b[ia]) * ((Int32)b->b[ib]) ); - sum[ia+ib] = (UChar)(carry & 0xFF); - carry >>= 8; - } - sum[ia+8] = (UChar)(carry & 0xFF); - if ((carry >>= 8) != 0) panic ( "uInt64_mul" ); - } - - for (ia = 0; ia < 8; ia++) r_hi->b[ia] = sum[ia+8]; - for (ia = 0; ia < 8; ia++) r_lo->b[ia] = sum[ia]; -} - - -static -void uInt64_shr1 ( UInt64* n ) -{ - Int32 i; - for (i = 0; i < 8; i++) { - n->b[i] >>= 1; - if (i < 7 && (n->b[i+1] & 1)) n->b[i] |= 0x80; - } -} - -static -void uInt64_shl1 ( UInt64* n ) -{ - Int32 i; - for (i = 7; i >= 0; i--) { - n->b[i] <<= 1; - if (i > 0 && (n->b[i-1] & 0x80)) n->b[i]++; - } -} - -static -Bool uInt64_isZero ( UInt64* n ) -{ - Int32 i; - for (i = 0; i < 8; i++) - if (n->b[i] != 0) return 0; - return 1; -} - -static -Int32 uInt64_qrm10 ( UInt64* n ) -{ - /* Divide *n by 10, and return the remainder. Long division - is difficult, so we cheat and instead multiply by - 0xCCCC CCCC CCCC CCCD, which is 0.8 (viz, 0.1 << 3). - */ - Int32 i; - UInt64 tmp1, tmp2, n_orig, zero_point_eight; - - zero_point_eight.b[1] = zero_point_eight.b[2] = - zero_point_eight.b[3] = zero_point_eight.b[4] = - zero_point_eight.b[5] = zero_point_eight.b[6] = - zero_point_eight.b[7] = 0xCC; - zero_point_eight.b[0] = 0xCD; - - n_orig = *n; - - /* divide n by 10, - by multiplying by 0.8 and then shifting right 3 times */ - uInt64_mul ( n, &zero_point_eight, &tmp1, &tmp2 ); - uInt64_shr1(&tmp1); uInt64_shr1(&tmp1); uInt64_shr1(&tmp1); - *n = tmp1; - - /* tmp1 = 8*n, tmp2 = 2*n */ - uInt64_shl1(&tmp1); uInt64_shl1(&tmp1); uInt64_shl1(&tmp1); - tmp2 = *n; uInt64_shl1(&tmp2); - - /* tmp1 = 10*n */ - uInt64_add ( &tmp2, &tmp1 ); - - /* n_orig = n_orig - 10*n */ - uInt64_sub ( &tmp1, &n_orig ); - - /* n_orig should now hold quotient, in range 0 .. 9 */ - for (i = 7; i >= 1; i--) - if (n_orig.b[i] != 0) panic ( "uInt64_qrm10(1)" ); - if (n_orig.b[0] > 9) - panic ( "uInt64_qrm10(2)" ); - - return (int)n_orig.b[0]; -} - -/* ... and the Whole Entire Point of all this UInt64 stuff is - so that we can supply the following function. -*/ -static -void uInt64_toAscii ( char* outbuf, UInt64* n ) -{ - Int32 i, q; - UChar buf[32]; - Int32 nBuf = 0; - UInt64 n_copy = *n; - do { - q = uInt64_qrm10 ( &n_copy ); - buf[nBuf] = q + '0'; - nBuf++; - } while (!uInt64_isZero(&n_copy)); - outbuf[nBuf] = 0; - for (i = 0; i < nBuf; i++) outbuf[i] = buf[nBuf-i-1]; -} - - -/*---------------------------------------------------*/ -/*--- Processing of complete files and streams ---*/ -/*---------------------------------------------------*/ - -/*---------------------------------------------*/ -static -Bool myfeof ( FILE* f ) -{ - Int32 c = fgetc ( f ); - if (c == EOF) return True; - ungetc ( c, f ); - return False; -} - - -/*---------------------------------------------*/ -static -void compressStream ( FILE *stream, FILE *zStream ) -{ - BZFILE* bzf = NULL; - UChar ibuf[5000]; - Int32 nIbuf; - UInt32 nbytes_in_lo32, nbytes_in_hi32; - UInt32 nbytes_out_lo32, nbytes_out_hi32; - Int32 bzerr, bzerr_dummy, ret; - - SET_BINARY_MODE(stream); - SET_BINARY_MODE(zStream); - - if (ferror(stream)) goto errhandler_io; - if (ferror(zStream)) goto errhandler_io; - - bzf = BZ2_bzWriteOpen ( &bzerr, zStream, - blockSize100k, verbosity, workFactor ); - if (bzerr != BZ_OK) goto errhandler; - - if (verbosity >= 2) fprintf ( stderr, "\n" ); - - while (True) { - - if (myfeof(stream)) break; - nIbuf = fread ( ibuf, sizeof(UChar), 5000, stream ); - if (ferror(stream)) goto errhandler_io; - if (nIbuf > 0) BZ2_bzWrite ( &bzerr, bzf, (void*)ibuf, nIbuf ); - if (bzerr != BZ_OK) goto errhandler; - - } - - BZ2_bzWriteClose64 ( &bzerr, bzf, 0, - &nbytes_in_lo32, &nbytes_in_hi32, - &nbytes_out_lo32, &nbytes_out_hi32 ); - if (bzerr != BZ_OK) goto errhandler; - - if (ferror(zStream)) goto errhandler_io; - ret = fflush ( zStream ); - if (ret == EOF) goto errhandler_io; - if (zStream != stdout) { - ret = fclose ( zStream ); - if (ret == EOF) goto errhandler_io; - } - if (ferror(stream)) goto errhandler_io; - ret = fclose ( stream ); - if (ret == EOF) goto errhandler_io; - - if (nbytes_in_lo32 == 0 && nbytes_in_hi32 == 0) - nbytes_in_lo32 = 1; - - if (verbosity >= 1) { - Char buf_nin[32], buf_nout[32]; - UInt64 nbytes_in, nbytes_out; - double nbytes_in_d, nbytes_out_d; - uInt64_from_UInt32s ( &nbytes_in, - nbytes_in_lo32, nbytes_in_hi32 ); - uInt64_from_UInt32s ( &nbytes_out, - nbytes_out_lo32, nbytes_out_hi32 ); - nbytes_in_d = uInt64_to_double ( &nbytes_in ); - nbytes_out_d = uInt64_to_double ( &nbytes_out ); - uInt64_toAscii ( buf_nin, &nbytes_in ); - uInt64_toAscii ( buf_nout, &nbytes_out ); - fprintf ( stderr, "%6.3f:1, %6.3f bits/byte, " - "%5.2f%% saved, %s in, %s out.\n", - nbytes_in_d / nbytes_out_d, - (8.0 * nbytes_out_d) / nbytes_in_d, - 100.0 * (1.0 - nbytes_out_d / nbytes_in_d), - buf_nin, - buf_nout - ); - } - - return; - - errhandler: - BZ2_bzWriteClose64 ( &bzerr_dummy, bzf, 1, - &nbytes_in_lo32, &nbytes_in_hi32, - &nbytes_out_lo32, &nbytes_out_hi32 ); - switch (bzerr) { - case BZ_CONFIG_ERROR: - configError(); break; - case BZ_MEM_ERROR: - outOfMemory (); break; - case BZ_IO_ERROR: - errhandler_io: - ioError(); break; - default: - panic ( "compress:unexpected error" ); - } - - panic ( "compress:end" ); - /*notreached*/ -} - - - -/*---------------------------------------------*/ -static -Bool uncompressStream ( FILE *zStream, FILE *stream ) -{ - BZFILE* bzf = NULL; - Int32 bzerr, bzerr_dummy, ret, nread, streamNo, i; - UChar obuf[5000]; - UChar unused[BZ_MAX_UNUSED]; - Int32 nUnused; - UChar* unusedTmp; - - nUnused = 0; - streamNo = 0; - - SET_BINARY_MODE(stream); - SET_BINARY_MODE(zStream); - - if (ferror(stream)) goto errhandler_io; - if (ferror(zStream)) goto errhandler_io; - - while (True) { - - bzf = BZ2_bzReadOpen ( - &bzerr, zStream, verbosity, - (int)smallMode, unused, nUnused - ); - if (bzf == NULL || bzerr != BZ_OK) goto errhandler; - streamNo++; - - while (bzerr == BZ_OK) { - nread = BZ2_bzRead ( &bzerr, bzf, obuf, 5000 ); - if (bzerr == BZ_DATA_ERROR_MAGIC) goto errhandler; - if ((bzerr == BZ_OK || bzerr == BZ_STREAM_END) && nread > 0) - fwrite ( obuf, sizeof(UChar), nread, stream ); - if (ferror(stream)) goto errhandler_io; - } - if (bzerr != BZ_STREAM_END) goto errhandler; - - BZ2_bzReadGetUnused ( &bzerr, bzf, (void**)(&unusedTmp), &nUnused ); - if (bzerr != BZ_OK) panic ( "decompress:bzReadGetUnused" ); - - for (i = 0; i < nUnused; i++) unused[i] = unusedTmp[i]; - - BZ2_bzReadClose ( &bzerr, bzf ); - if (bzerr != BZ_OK) panic ( "decompress:bzReadGetUnused" ); - - if (nUnused == 0 && myfeof(zStream)) break; - - } - - if (ferror(zStream)) goto errhandler_io; - ret = fclose ( zStream ); - if (ret == EOF) goto errhandler_io; - - if (ferror(stream)) goto errhandler_io; - ret = fflush ( stream ); - if (ret != 0) goto errhandler_io; - if (stream != stdout) { - ret = fclose ( stream ); - if (ret == EOF) goto errhandler_io; - } - if (verbosity >= 2) fprintf ( stderr, "\n " ); - return True; - - errhandler: - BZ2_bzReadClose ( &bzerr_dummy, bzf ); - switch (bzerr) { - case BZ_CONFIG_ERROR: - configError(); break; - case BZ_IO_ERROR: - errhandler_io: - ioError(); break; - case BZ_DATA_ERROR: - crcError(); - case BZ_MEM_ERROR: - outOfMemory(); - case BZ_UNEXPECTED_EOF: - compressedStreamEOF(); - case BZ_DATA_ERROR_MAGIC: - if (zStream != stdin) fclose(zStream); - if (stream != stdout) fclose(stream); - if (streamNo == 1) { - return False; - } else { - if (noisy) - fprintf ( stderr, - "\n%s: %s: trailing garbage after EOF ignored\n", - progName, inName ); - return True; - } - default: - panic ( "decompress:unexpected error" ); - } - - panic ( "decompress:end" ); - return True; /*notreached*/ -} - - -/*---------------------------------------------*/ -static -Bool testStream ( FILE *zStream ) -{ - BZFILE* bzf = NULL; - Int32 bzerr, bzerr_dummy, ret, nread, streamNo, i; - UChar obuf[5000]; - UChar unused[BZ_MAX_UNUSED]; - Int32 nUnused; - UChar* unusedTmp; - - nUnused = 0; - streamNo = 0; - - SET_BINARY_MODE(zStream); - if (ferror(zStream)) goto errhandler_io; - - while (True) { - - bzf = BZ2_bzReadOpen ( - &bzerr, zStream, verbosity, - (int)smallMode, unused, nUnused - ); - if (bzf == NULL || bzerr != BZ_OK) goto errhandler; - streamNo++; - - while (bzerr == BZ_OK) { - nread = BZ2_bzRead ( &bzerr, bzf, obuf, 5000 ); - if (bzerr == BZ_DATA_ERROR_MAGIC) goto errhandler; - } - if (bzerr != BZ_STREAM_END) goto errhandler; - - BZ2_bzReadGetUnused ( &bzerr, bzf, (void**)(&unusedTmp), &nUnused ); - if (bzerr != BZ_OK) panic ( "test:bzReadGetUnused" ); - - for (i = 0; i < nUnused; i++) unused[i] = unusedTmp[i]; - - BZ2_bzReadClose ( &bzerr, bzf ); - if (bzerr != BZ_OK) panic ( "test:bzReadGetUnused" ); - if (nUnused == 0 && myfeof(zStream)) break; - - } - - if (ferror(zStream)) goto errhandler_io; - ret = fclose ( zStream ); - if (ret == EOF) goto errhandler_io; - - if (verbosity >= 2) fprintf ( stderr, "\n " ); - return True; - - errhandler: - BZ2_bzReadClose ( &bzerr_dummy, bzf ); - if (verbosity == 0) - fprintf ( stderr, "%s: %s: ", progName, inName ); - switch (bzerr) { - case BZ_CONFIG_ERROR: - configError(); break; - case BZ_IO_ERROR: - errhandler_io: - ioError(); break; - case BZ_DATA_ERROR: - fprintf ( stderr, - "data integrity (CRC) error in data\n" ); - return False; - case BZ_MEM_ERROR: - outOfMemory(); - case BZ_UNEXPECTED_EOF: - fprintf ( stderr, - "file ends unexpectedly\n" ); - return False; - case BZ_DATA_ERROR_MAGIC: - if (zStream != stdin) fclose(zStream); - if (streamNo == 1) { - fprintf ( stderr, - "bad magic number (file not created by bzip2)\n" ); - return False; - } else { - if (noisy) - fprintf ( stderr, - "trailing garbage after EOF ignored\n" ); - return True; - } - default: - panic ( "test:unexpected error" ); - } - - panic ( "test:end" ); - return True; /*notreached*/ -} - - -/*---------------------------------------------------*/ -/*--- Error [non-] handling grunge ---*/ -/*---------------------------------------------------*/ - -/*---------------------------------------------*/ -static -void setExit ( Int32 v ) -{ - if (v > exitValue) exitValue = v; -} - - -/*---------------------------------------------*/ -static -void cadvise ( void ) -{ - if (noisy) - fprintf ( - stderr, - "\nIt is possible that the compressed file(s) have become corrupted.\n" - "You can use the -tvv option to test integrity of such files.\n\n" - "You can use the `bzip2recover' program to *attempt* to recover\n" - "data from undamaged sections of corrupted files.\n\n" - ); -} - - -/*---------------------------------------------*/ -static -void showFileNames ( void ) -{ - if (noisy) - fprintf ( - stderr, - "\tInput file = %s, output file = %s\n", - inName, outName - ); -} - - -/*---------------------------------------------*/ -static -void cleanUpAndFail ( Int32 ec ) -{ - IntNative retVal; - - if ( srcMode == SM_F2F - && opMode != OM_TEST - && deleteOutputOnInterrupt ) { - if (noisy) - fprintf ( stderr, "%s: Deleting output file %s, if it exists.\n", - progName, outName ); - if (outputHandleJustInCase != NULL) - fclose ( outputHandleJustInCase ); - retVal = remove ( outName ); - if (retVal != 0) - fprintf ( stderr, - "%s: WARNING: deletion of output file (apparently) failed.\n", - progName ); - } - if (noisy && numFileNames > 0 && numFilesProcessed < numFileNames) { - fprintf ( stderr, - "%s: WARNING: some files have not been processed:\n" - "\t%d specified on command line, %d not processed yet.\n\n", - progName, numFileNames, - numFileNames - numFilesProcessed ); - } - setExit(ec); - exit(exitValue); -} - - -/*---------------------------------------------*/ -static -void panic ( Char* s ) -{ - fprintf ( stderr, - "\n%s: PANIC -- internal consistency error:\n" - "\t%s\n" - "\tThis is a BUG. Please report it to me at:\n" - "\tjseward@acm.org\n", - progName, s ); - showFileNames(); - cleanUpAndFail( 3 ); -} - - -/*---------------------------------------------*/ -static -void crcError ( void ) -{ - fprintf ( stderr, - "\n%s: Data integrity error when decompressing.\n", - progName ); - showFileNames(); - cadvise(); - cleanUpAndFail( 2 ); -} - - -/*---------------------------------------------*/ -static -void compressedStreamEOF ( void ) -{ - fprintf ( stderr, - "\n%s: Compressed file ends unexpectedly;\n\t" - "perhaps it is corrupted? *Possible* reason follows.\n", - progName ); - perror ( progName ); - showFileNames(); - cadvise(); - cleanUpAndFail( 2 ); -} - - -/*---------------------------------------------*/ -static -void ioError ( void ) -{ - fprintf ( stderr, - "\n%s: I/O or other error, bailing out. " - "Possible reason follows.\n", - progName ); - perror ( progName ); - showFileNames(); - cleanUpAndFail( 1 ); -} - - -/*---------------------------------------------*/ -static -void mySignalCatcher ( IntNative n ) -{ - fprintf ( stderr, - "\n%s: Control-C or similar caught, quitting.\n", - progName ); - cleanUpAndFail(1); -} - - -/*---------------------------------------------*/ -static -void mySIGSEGVorSIGBUScatcher ( IntNative n ) -{ - if (opMode == OM_Z) - fprintf ( - stderr, - "\n%s: Caught a SIGSEGV or SIGBUS whilst compressing.\n" - "\n" - " Possible causes are (most likely first):\n" - " (1) This computer has unreliable memory or cache hardware\n" - " (a surprisingly common problem; try a different machine.)\n" - " (2) A bug in the compiler used to create this executable\n" - " (unlikely, if you didn't compile bzip2 yourself.)\n" - " (3) A real bug in bzip2 -- I hope this should never be the case.\n" - " The user's manual, Section 4.3, has more info on (1) and (2).\n" - " \n" - " If you suspect this is a bug in bzip2, or are unsure about (1)\n" - " or (2), feel free to report it to me at: jseward@acm.org.\n" - " Section 4.3 of the user's manual describes the info a useful\n" - " bug report should have. If the manual is available on your\n" - " system, please try and read it before mailing me. If you don't\n" - " have the manual or can't be bothered to read it, mail me anyway.\n" - "\n", - progName ); - else - fprintf ( - stderr, - "\n%s: Caught a SIGSEGV or SIGBUS whilst decompressing.\n" - "\n" - " Possible causes are (most likely first):\n" - " (1) The compressed data is corrupted, and bzip2's usual checks\n" - " failed to detect this. Try bzip2 -tvv my_file.bz2.\n" - " (2) This computer has unreliable memory or cache hardware\n" - " (a surprisingly common problem; try a different machine.)\n" - " (3) A bug in the compiler used to create this executable\n" - " (unlikely, if you didn't compile bzip2 yourself.)\n" - " (4) A real bug in bzip2 -- I hope this should never be the case.\n" - " The user's manual, Section 4.3, has more info on (2) and (3).\n" - " \n" - " If you suspect this is a bug in bzip2, or are unsure about (2)\n" - " or (3), feel free to report it to me at: jseward@acm.org.\n" - " Section 4.3 of the user's manual describes the info a useful\n" - " bug report should have. If the manual is available on your\n" - " system, please try and read it before mailing me. If you don't\n" - " have the manual or can't be bothered to read it, mail me anyway.\n" - "\n", - progName ); - - showFileNames(); - if (opMode == OM_Z) - cleanUpAndFail( 3 ); else - { cadvise(); cleanUpAndFail( 2 ); } -} - - -/*---------------------------------------------*/ -static -void outOfMemory ( void ) -{ - fprintf ( stderr, - "\n%s: couldn't allocate enough memory\n", - progName ); - showFileNames(); - cleanUpAndFail(1); -} - - -/*---------------------------------------------*/ -static -void configError ( void ) -{ - fprintf ( stderr, - "bzip2: I'm not configured correctly for this platform!\n" - "\tI require Int32, Int16 and Char to have sizes\n" - "\tof 4, 2 and 1 bytes to run properly, and they don't.\n" - "\tProbably you can fix this by defining them correctly,\n" - "\tand recompiling. Bye!\n" ); - setExit(3); - exit(exitValue); -} - - -/*---------------------------------------------------*/ -/*--- The main driver machinery ---*/ -/*---------------------------------------------------*/ - -/*---------------------------------------------*/ -static -void pad ( Char *s ) -{ - Int32 i; - if ( (Int32)strlen(s) >= longestFileName ) return; - for (i = 1; i <= longestFileName - (Int32)strlen(s); i++) - fprintf ( stderr, " " ); -} - - -/*---------------------------------------------*/ -static -void copyFileName ( Char* to, Char* from ) -{ - if ( strlen(from) > FILE_NAME_LEN-10 ) { - fprintf ( - stderr, - "bzip2: file name\n`%s'\n" - "is suspiciously (more than %d chars) long.\n" - "Try using a reasonable file name instead. Sorry! :-)\n", - from, FILE_NAME_LEN-10 - ); - setExit(1); - exit(exitValue); - } - - strncpy(to,from,FILE_NAME_LEN-10); - to[FILE_NAME_LEN-10]='\0'; -} - - -/*---------------------------------------------*/ -static -Bool fileExists ( Char* name ) -{ - FILE *tmp = fopen ( name, "rb" ); - Bool exists = (tmp != NULL); - if (tmp != NULL) fclose ( tmp ); - return exists; -} - - -/*---------------------------------------------*/ -/*-- - if in doubt, return True ---*/ -static -Bool notAStandardFile ( Char* name ) -{ - IntNative i; - struct MY_STAT statBuf; - - i = MY_LSTAT ( name, &statBuf ); - if (i != 0) return True; - if (MY_S_IFREG(statBuf.st_mode)) return False; - return True; -} - - -/*---------------------------------------------*/ -/*-- - rac 11/21/98 see if file has hard links to it ---*/ -static -Int32 countHardLinks ( Char* name ) -{ - IntNative i; - struct MY_STAT statBuf; - - i = MY_LSTAT ( name, &statBuf ); - if (i != 0) return 0; - return (statBuf.st_nlink - 1); -} - - -/*---------------------------------------------*/ -static -void copyDatePermissionsAndOwner ( Char *srcName, Char *dstName ) -{ -#if BZ_UNIX - IntNative retVal; - struct MY_STAT statBuf; - struct utimbuf uTimBuf; - - retVal = MY_LSTAT ( srcName, &statBuf ); - ERROR_IF_NOT_ZERO ( retVal ); - uTimBuf.actime = statBuf.st_atime; - uTimBuf.modtime = statBuf.st_mtime; - - retVal = chmod ( dstName, statBuf.st_mode ); - ERROR_IF_NOT_ZERO ( retVal ); - - retVal = utime ( dstName, &uTimBuf ); - ERROR_IF_NOT_ZERO ( retVal ); - - retVal = chown ( dstName, statBuf.st_uid, statBuf.st_gid ); - /* chown() will in many cases return with EPERM, which can - be safely ignored. - */ -#endif -} - - -/*---------------------------------------------*/ -static -void setInterimPermissions ( Char *dstName ) -{ -#if BZ_UNIX - IntNative retVal; - retVal = chmod ( dstName, S_IRUSR | S_IWUSR ); - ERROR_IF_NOT_ZERO ( retVal ); -#endif -} - - -/*---------------------------------------------*/ -static -Bool containsDubiousChars ( Char* name ) -{ - Bool cdc = False; - for (; *name != '\0'; name++) - if (*name == '?' || *name == '*') cdc = True; - return cdc; -} - - -/*---------------------------------------------*/ -#define BZ_N_SUFFIX_PAIRS 4 - -Char* zSuffix[BZ_N_SUFFIX_PAIRS] - = { ".bz2", ".bz", ".tbz2", ".tbz" }; -Char* unzSuffix[BZ_N_SUFFIX_PAIRS] - = { "", "", ".tar", ".tar" }; - -static -Bool hasSuffix ( Char* s, Char* suffix ) -{ - Int32 ns = strlen(s); - Int32 nx = strlen(suffix); - if (ns < nx) return False; - if (strcmp(s + ns - nx, suffix) == 0) return True; - return False; -} - -static -Bool mapSuffix ( Char* name, - Char* oldSuffix, Char* newSuffix ) -{ - if (!hasSuffix(name,oldSuffix)) return False; - name[strlen(name)-strlen(oldSuffix)] = 0; - strcat ( name, newSuffix ); - return True; -} - - -/*---------------------------------------------*/ -static -void compress ( Char *name ) -{ - FILE *inStr; - FILE *outStr; - Int32 n, i; - - deleteOutputOnInterrupt = False; - - if (name == NULL && srcMode != SM_I2O) - panic ( "compress: bad modes\n" ); - - switch (srcMode) { - case SM_I2O: - copyFileName ( inName, "(stdin)" ); - copyFileName ( outName, "(stdout)" ); - break; - case SM_F2F: - copyFileName ( inName, name ); - copyFileName ( outName, name ); - strcat ( outName, ".bz2" ); - break; - case SM_F2O: - copyFileName ( inName, name ); - copyFileName ( outName, "(stdout)" ); - break; - } - - if ( srcMode != SM_I2O && containsDubiousChars ( inName ) ) { - if (noisy) - fprintf ( stderr, "%s: There are no files matching `%s'.\n", - progName, inName ); - setExit(1); - return; - } - if ( srcMode != SM_I2O && !fileExists ( inName ) ) { - fprintf ( stderr, "%s: Can't open input file %s: %s.\n", - progName, inName, strerror(errno) ); - setExit(1); - return; - } - for (i = 0; i < BZ_N_SUFFIX_PAIRS; i++) { - if (hasSuffix(inName, zSuffix[i])) { - if (noisy) - fprintf ( stderr, - "%s: Input file %s already has %s suffix.\n", - progName, inName, zSuffix[i] ); - setExit(1); - return; - } - } - if ( srcMode == SM_F2F && !forceOverwrite && notAStandardFile ( inName )) { - if (noisy) - fprintf ( stderr, "%s: Input file %s is not a normal file.\n", - progName, inName ); - setExit(1); - return; - } - if ( srcMode == SM_F2F && !forceOverwrite && fileExists ( outName ) ) { - fprintf ( stderr, "%s: Output file %s already exists.\n", - progName, outName ); - setExit(1); - return; - } - if ( srcMode == SM_F2F && !forceOverwrite && - (n=countHardLinks ( inName )) > 0) { - fprintf ( stderr, "%s: Input file %s has %d other link%s.\n", - progName, inName, n, n > 1 ? "s" : "" ); - setExit(1); - return; - } - - switch ( srcMode ) { - - case SM_I2O: - inStr = stdin; - outStr = stdout; - if ( isatty ( fileno ( stdout ) ) ) { - fprintf ( stderr, - "%s: I won't write compressed data to a terminal.\n", - progName ); - fprintf ( stderr, "%s: For help, type: `%s --help'.\n", - progName, progName ); - setExit(1); - return; - }; - break; - - case SM_F2O: - inStr = fopen ( inName, "rb" ); - outStr = stdout; - if ( isatty ( fileno ( stdout ) ) ) { - fprintf ( stderr, - "%s: I won't write compressed data to a terminal.\n", - progName ); - fprintf ( stderr, "%s: For help, type: `%s --help'.\n", - progName, progName ); - if ( inStr != NULL ) fclose ( inStr ); - setExit(1); - return; - }; - if ( inStr == NULL ) { - fprintf ( stderr, "%s: Can't open input file %s: %s.\n", - progName, inName, strerror(errno) ); - setExit(1); - return; - }; - break; - - case SM_F2F: - inStr = fopen ( inName, "rb" ); - outStr = fopen ( outName, "wb" ); - if ( outStr == NULL) { - fprintf ( stderr, "%s: Can't create output file %s: %s.\n", - progName, outName, strerror(errno) ); - if ( inStr != NULL ) fclose ( inStr ); - setExit(1); - return; - } - if ( inStr == NULL ) { - fprintf ( stderr, "%s: Can't open input file %s: %s.\n", - progName, inName, strerror(errno) ); - if ( outStr != NULL ) fclose ( outStr ); - setExit(1); - return; - }; - setInterimPermissions ( outName ); - break; - - default: - panic ( "compress: bad srcMode" ); - break; - } - - if (verbosity >= 1) { - fprintf ( stderr, " %s: ", inName ); - pad ( inName ); - fflush ( stderr ); - } - - /*--- Now the input and output handles are sane. Do the Biz. ---*/ - outputHandleJustInCase = outStr; - deleteOutputOnInterrupt = True; - compressStream ( inStr, outStr ); - outputHandleJustInCase = NULL; - - /*--- If there was an I/O error, we won't get here. ---*/ - if ( srcMode == SM_F2F ) { - copyDatePermissionsAndOwner ( inName, outName ); - deleteOutputOnInterrupt = False; - if ( !keepInputFiles ) { - IntNative retVal = remove ( inName ); - ERROR_IF_NOT_ZERO ( retVal ); - } - } - - deleteOutputOnInterrupt = False; -} - - -/*---------------------------------------------*/ -static -void uncompress ( Char *name ) -{ - FILE *inStr; - FILE *outStr; - Int32 n, i; - Bool magicNumberOK; - Bool cantGuess; - - deleteOutputOnInterrupt = False; - - if (name == NULL && srcMode != SM_I2O) - panic ( "uncompress: bad modes\n" ); - - cantGuess = False; - switch (srcMode) { - case SM_I2O: - copyFileName ( inName, "(stdin)" ); - copyFileName ( outName, "(stdout)" ); - break; - case SM_F2F: - copyFileName ( inName, name ); - copyFileName ( outName, name ); - for (i = 0; i < BZ_N_SUFFIX_PAIRS; i++) - if (mapSuffix(outName,zSuffix[i],unzSuffix[i])) - goto zzz; - cantGuess = True; - strcat ( outName, ".out" ); - break; - case SM_F2O: - copyFileName ( inName, name ); - copyFileName ( outName, "(stdout)" ); - break; - } - - zzz: - if ( srcMode != SM_I2O && containsDubiousChars ( inName ) ) { - if (noisy) - fprintf ( stderr, "%s: There are no files matching `%s'.\n", - progName, inName ); - setExit(1); - return; - } - if ( srcMode != SM_I2O && !fileExists ( inName ) ) { - fprintf ( stderr, "%s: Can't open input file %s: %s.\n", - progName, inName, strerror(errno) ); - setExit(1); - return; - } - if ( srcMode == SM_F2F && !forceOverwrite && notAStandardFile ( inName )) { - if (noisy) - fprintf ( stderr, "%s: Input file %s is not a normal file.\n", - progName, inName ); - setExit(1); - return; - } - if ( /* srcMode == SM_F2F implied && */ cantGuess ) { - if (noisy) - fprintf ( stderr, - "%s: Can't guess original name for %s -- using %s\n", - progName, inName, outName ); - /* just a warning, no return */ - } - if ( srcMode == SM_F2F && !forceOverwrite && fileExists ( outName ) ) { - fprintf ( stderr, "%s: Output file %s already exists.\n", - progName, outName ); - setExit(1); - return; - } - if ( srcMode == SM_F2F && !forceOverwrite && - (n=countHardLinks ( inName ) ) > 0) { - fprintf ( stderr, "%s: Input file %s has %d other link%s.\n", - progName, inName, n, n > 1 ? "s" : "" ); - setExit(1); - return; - } - - switch ( srcMode ) { - - case SM_I2O: - inStr = stdin; - outStr = stdout; - if ( isatty ( fileno ( stdin ) ) ) { - fprintf ( stderr, - "%s: I won't read compressed data from a terminal.\n", - progName ); - fprintf ( stderr, "%s: For help, type: `%s --help'.\n", - progName, progName ); - setExit(1); - return; - }; - break; - - case SM_F2O: - inStr = fopen ( inName, "rb" ); - outStr = stdout; - if ( inStr == NULL ) { - fprintf ( stderr, "%s: Can't open input file %s:%s.\n", - progName, inName, strerror(errno) ); - if ( inStr != NULL ) fclose ( inStr ); - setExit(1); - return; - }; - break; - - case SM_F2F: - inStr = fopen ( inName, "rb" ); - outStr = fopen ( outName, "wb" ); - if ( outStr == NULL) { - fprintf ( stderr, "%s: Can't create output file %s: %s.\n", - progName, outName, strerror(errno) ); - if ( inStr != NULL ) fclose ( inStr ); - setExit(1); - return; - } - if ( inStr == NULL ) { - fprintf ( stderr, "%s: Can't open input file %s: %s.\n", - progName, inName, strerror(errno) ); - if ( outStr != NULL ) fclose ( outStr ); - setExit(1); - return; - }; - setInterimPermissions ( outName ); - break; - - default: - panic ( "uncompress: bad srcMode" ); - break; - } - - if (verbosity >= 1) { - fprintf ( stderr, " %s: ", inName ); - pad ( inName ); - fflush ( stderr ); - } - - /*--- Now the input and output handles are sane. Do the Biz. ---*/ - outputHandleJustInCase = outStr; - deleteOutputOnInterrupt = True; - magicNumberOK = uncompressStream ( inStr, outStr ); - outputHandleJustInCase = NULL; - - /*--- If there was an I/O error, we won't get here. ---*/ - if ( magicNumberOK ) { - if ( srcMode == SM_F2F ) { - copyDatePermissionsAndOwner ( inName, outName ); - deleteOutputOnInterrupt = False; - if ( !keepInputFiles ) { - IntNative retVal = remove ( inName ); - ERROR_IF_NOT_ZERO ( retVal ); - } - } - } else { - unzFailsExist = True; - deleteOutputOnInterrupt = False; - if ( srcMode == SM_F2F ) { - IntNative retVal = remove ( outName ); - ERROR_IF_NOT_ZERO ( retVal ); - } - } - deleteOutputOnInterrupt = False; - - if ( magicNumberOK ) { - if (verbosity >= 1) - fprintf ( stderr, "done\n" ); - } else { - setExit(2); - if (verbosity >= 1) - fprintf ( stderr, "not a bzip2 file.\n" ); else - fprintf ( stderr, - "%s: %s is not a bzip2 file.\n", - progName, inName ); - } - -} - - -/*---------------------------------------------*/ -static -void testf ( Char *name ) -{ - FILE *inStr; - Bool allOK; - - deleteOutputOnInterrupt = False; - - if (name == NULL && srcMode != SM_I2O) - panic ( "testf: bad modes\n" ); - - copyFileName ( outName, "(none)" ); - switch (srcMode) { - case SM_I2O: copyFileName ( inName, "(stdin)" ); break; - case SM_F2F: copyFileName ( inName, name ); break; - case SM_F2O: copyFileName ( inName, name ); break; - } - - if ( srcMode != SM_I2O && containsDubiousChars ( inName ) ) { - if (noisy) - fprintf ( stderr, "%s: There are no files matching `%s'.\n", - progName, inName ); - setExit(1); - return; - } - if ( srcMode != SM_I2O && !fileExists ( inName ) ) { - fprintf ( stderr, "%s: Can't open input %s: %s.\n", - progName, inName, strerror(errno) ); - setExit(1); - return; - } - - switch ( srcMode ) { - - case SM_I2O: - if ( isatty ( fileno ( stdin ) ) ) { - fprintf ( stderr, - "%s: I won't read compressed data from a terminal.\n", - progName ); - fprintf ( stderr, "%s: For help, type: `%s --help'.\n", - progName, progName ); - setExit(1); - return; - }; - inStr = stdin; - break; - - case SM_F2O: case SM_F2F: - inStr = fopen ( inName, "rb" ); - if ( inStr == NULL ) { - fprintf ( stderr, "%s: Can't open input file %s:%s.\n", - progName, inName, strerror(errno) ); - setExit(1); - return; - }; - break; - - default: - panic ( "testf: bad srcMode" ); - break; - } - - if (verbosity >= 1) { - fprintf ( stderr, " %s: ", inName ); - pad ( inName ); - fflush ( stderr ); - } - - /*--- Now the input handle is sane. Do the Biz. ---*/ - allOK = testStream ( inStr ); - - if (allOK && verbosity >= 1) fprintf ( stderr, "ok\n" ); - if (!allOK) testFailsExist = True; -} - - -/*---------------------------------------------*/ -static -void license ( void ) -{ - fprintf ( stderr, - - "bzip2, a block-sorting file compressor. " - "Version %s.\n" - " \n" - " Copyright (C) 1996-2000 by Julian Seward.\n" - " \n" - " This program is free software; you can redistribute it and/or modify\n" - " it under the terms set out in the LICENSE file, which is included\n" - " in the bzip2-1.0 source distribution.\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" - " LICENSE file for more details.\n" - " \n", - BZ2_bzlibVersion() - ); -} - - -/*---------------------------------------------*/ -static -void usage ( Char *fullProgName ) -{ - fprintf ( - stderr, - "bzip2, a block-sorting file compressor. " - "Version %s.\n" - "\n usage: %s [flags and input files in any order]\n" - "\n" - " -h --help print this message\n" - " -d --decompress force decompression\n" - " -z --compress force compression\n" - " -k --keep keep (don't delete) input files\n" - " -f --force overwrite existing output files\n" - " -t --test test compressed file integrity\n" - " -c --stdout output to standard out\n" - " -q --quiet suppress noncritical error messages\n" - " -v --verbose be verbose (a 2nd -v gives more)\n" - " -L --license display software version & license\n" - " -V --version display software version & license\n" - " -s --small use less memory (at most 2500k)\n" - " -1 .. -9 set block size to 100k .. 900k\n" - "\n" - " If invoked as `bzip2', default action is to compress.\n" - " as `bunzip2', default action is to decompress.\n" - " as `bzcat', default action is to decompress to stdout.\n" - "\n" - " If no file names are given, bzip2 compresses or decompresses\n" - " from standard input to standard output. You can combine\n" - " short flags, so `-v -4' means the same as -v4 or -4v, &c.\n" -#if BZ_UNIX - "\n" -#endif - , - - BZ2_bzlibVersion(), - fullProgName - ); -} - - -/*---------------------------------------------*/ -static -void redundant ( Char* flag ) -{ - fprintf ( - stderr, - "%s: %s is redundant in versions 0.9.5 and above\n", - progName, flag ); -} - - -/*---------------------------------------------*/ -/*-- - All the garbage from here to main() is purely to - implement a linked list of command-line arguments, - into which main() copies argv[1 .. argc-1]. - - The purpose of this exercise is to facilitate - the expansion of wildcard characters * and ? in - filenames for OSs which don't know how to do it - themselves, like MSDOS, Windows 95 and NT. - - The actual Dirty Work is done by the platform- - specific macro APPEND_FILESPEC. ---*/ - -typedef - struct zzzz { - Char *name; - struct zzzz *link; - } - Cell; - - -/*---------------------------------------------*/ -static -void *myMalloc ( Int32 n ) -{ - void* p; - - p = malloc ( (size_t)n ); - if (p == NULL) outOfMemory (); - return p; -} - - -/*---------------------------------------------*/ -static -Cell *mkCell ( void ) -{ - Cell *c; - - c = (Cell*) myMalloc ( sizeof ( Cell ) ); - c->name = NULL; - c->link = NULL; - return c; -} - - -/*---------------------------------------------*/ -static -Cell *snocString ( Cell *root, Char *name ) -{ - if (root == NULL) { - Cell *tmp = mkCell(); - tmp->name = (Char*) myMalloc ( 5 + strlen(name) ); - strcpy ( tmp->name, name ); - return tmp; - } else { - Cell *tmp = root; - while (tmp->link != NULL) tmp = tmp->link; - tmp->link = snocString ( tmp->link, name ); - return root; - } -} - - -/*---------------------------------------------*/ -static -void addFlagsFromEnvVar ( Cell** argList, Char* varName ) -{ - Int32 i, j, k; - Char *envbase, *p; - - envbase = getenv(varName); - if (envbase != NULL) { - p = envbase; - i = 0; - while (True) { - if (p[i] == 0) break; - p += i; - i = 0; - while (isspace((Int32)(p[0]))) p++; - while (p[i] != 0 && !isspace((Int32)(p[i]))) i++; - if (i > 0) { - k = i; if (k > FILE_NAME_LEN-10) k = FILE_NAME_LEN-10; - for (j = 0; j < k; j++) tmpName[j] = p[j]; - tmpName[k] = 0; - APPEND_FLAG(*argList, tmpName); - } - } - } -} - - -/*---------------------------------------------*/ -#define ISFLAG(s) (strcmp(aa->name, (s))==0) - -IntNative main ( IntNative argc, Char *argv[] ) -{ - Int32 i, j; - Char *tmp; - Cell *argList; - Cell *aa; - Bool decode; - - /*-- Be really really really paranoid :-) --*/ - if (sizeof(Int32) != 4 || sizeof(UInt32) != 4 || - sizeof(Int16) != 2 || sizeof(UInt16) != 2 || - sizeof(Char) != 1 || sizeof(UChar) != 1) - configError(); - - /*-- Initialise --*/ - outputHandleJustInCase = NULL; - smallMode = False; - keepInputFiles = False; - forceOverwrite = False; - noisy = True; - verbosity = 0; - blockSize100k = 9; - testFailsExist = False; - unzFailsExist = False; - numFileNames = 0; - numFilesProcessed = 0; - workFactor = 30; - deleteOutputOnInterrupt = False; - exitValue = 0; - i = j = 0; /* avoid bogus warning from egcs-1.1.X */ - - /*-- Set up signal handlers for mem access errors --*/ - signal (SIGSEGV, mySIGSEGVorSIGBUScatcher); -#if BZ_UNIX -#ifndef __DJGPP__ - signal (SIGBUS, mySIGSEGVorSIGBUScatcher); -#endif -#endif - - copyFileName ( inName, "(none)" ); - copyFileName ( outName, "(none)" ); - - copyFileName ( progNameReally, argv[0] ); - progName = &progNameReally[0]; - for (tmp = &progNameReally[0]; *tmp != '\0'; tmp++) - if (*tmp == PATH_SEP) progName = tmp + 1; - - - /*-- Copy flags from env var BZIP2, and - expand filename wildcards in arg list. - --*/ - argList = NULL; - addFlagsFromEnvVar ( &argList, "BZIP2" ); - addFlagsFromEnvVar ( &argList, "BZIP" ); - for (i = 1; i <= argc-1; i++) - APPEND_FILESPEC(argList, argv[i]); - - - /*-- Find the length of the longest filename --*/ - longestFileName = 7; - numFileNames = 0; - decode = True; - for (aa = argList; aa != NULL; aa = aa->link) { - if (ISFLAG("--")) { decode = False; continue; } - if (aa->name[0] == '-' && decode) continue; - numFileNames++; - if (longestFileName < (Int32)strlen(aa->name) ) - longestFileName = (Int32)strlen(aa->name); - } - - - /*-- Determine source modes; flag handling may change this too. --*/ - if (numFileNames == 0) - srcMode = SM_I2O; else srcMode = SM_F2F; - - - /*-- Determine what to do (compress/uncompress/test/cat). --*/ - /*-- Note that subsequent flag handling may change this. --*/ - opMode = OM_Z; - - if ( (strstr ( progName, "unzip" ) != 0) || - (strstr ( progName, "UNZIP" ) != 0) ) - opMode = OM_UNZ; - - if ( (strstr ( progName, "z2cat" ) != 0) || - (strstr ( progName, "Z2CAT" ) != 0) || - (strstr ( progName, "zcat" ) != 0) || - (strstr ( progName, "ZCAT" ) != 0) ) { - opMode = OM_UNZ; - srcMode = (numFileNames == 0) ? SM_I2O : SM_F2O; - } - - - /*-- Look at the flags. --*/ - for (aa = argList; aa != NULL; aa = aa->link) { - if (ISFLAG("--")) break; - if (aa->name[0] == '-' && aa->name[1] != '-') { - for (j = 1; aa->name[j] != '\0'; j++) { - switch (aa->name[j]) { - case 'c': srcMode = SM_F2O; break; - case 'd': opMode = OM_UNZ; break; - case 'z': opMode = OM_Z; break; - case 'f': forceOverwrite = True; break; - case 't': opMode = OM_TEST; break; - case 'k': keepInputFiles = True; break; - case 's': smallMode = True; break; - case 'q': noisy = False; break; - case '1': blockSize100k = 1; break; - case '2': blockSize100k = 2; break; - case '3': blockSize100k = 3; break; - case '4': blockSize100k = 4; break; - case '5': blockSize100k = 5; break; - case '6': blockSize100k = 6; break; - case '7': blockSize100k = 7; break; - case '8': blockSize100k = 8; break; - case '9': blockSize100k = 9; break; - case 'V': - case 'L': license(); break; - case 'v': verbosity++; break; - case 'h': usage ( progName ); - exit ( 0 ); - break; - default: fprintf ( stderr, "%s: Bad flag `%s'\n", - progName, aa->name ); - usage ( progName ); - exit ( 1 ); - break; - } - } - } - } - - /*-- And again ... --*/ - for (aa = argList; aa != NULL; aa = aa->link) { - if (ISFLAG("--")) break; - if (ISFLAG("--stdout")) srcMode = SM_F2O; else - if (ISFLAG("--decompress")) opMode = OM_UNZ; else - if (ISFLAG("--compress")) opMode = OM_Z; else - if (ISFLAG("--force")) forceOverwrite = True; else - if (ISFLAG("--test")) opMode = OM_TEST; else - if (ISFLAG("--keep")) keepInputFiles = True; else - if (ISFLAG("--small")) smallMode = True; else - if (ISFLAG("--quiet")) noisy = False; else - if (ISFLAG("--version")) license(); else - if (ISFLAG("--license")) license(); else - if (ISFLAG("--exponential")) workFactor = 1; else - if (ISFLAG("--repetitive-best")) redundant(aa->name); else - if (ISFLAG("--repetitive-fast")) redundant(aa->name); else - if (ISFLAG("--verbose")) verbosity++; else - if (ISFLAG("--help")) { usage ( progName ); exit ( 0 ); } - else - if (strncmp ( aa->name, "--", 2) == 0) { - fprintf ( stderr, "%s: Bad flag `%s'\n", progName, aa->name ); - usage ( progName ); - exit ( 1 ); - } - } - - if (verbosity > 4) verbosity = 4; - if (opMode == OM_Z && smallMode && blockSize100k > 2) - blockSize100k = 2; - - if (opMode == OM_TEST && srcMode == SM_F2O) { - fprintf ( stderr, "%s: -c and -t cannot be used together.\n", - progName ); - exit ( 1 ); - } - - if (srcMode == SM_F2O && numFileNames == 0) - srcMode = SM_I2O; - - if (opMode != OM_Z) blockSize100k = 0; - - if (srcMode == SM_F2F) { - signal (SIGINT, mySignalCatcher); - signal (SIGTERM, mySignalCatcher); -# if BZ_UNIX - signal (SIGHUP, mySignalCatcher); -# endif - } - - if (opMode == OM_Z) { - if (srcMode == SM_I2O) { - compress ( NULL ); - } else { - decode = True; - for (aa = argList; aa != NULL; aa = aa->link) { - if (ISFLAG("--")) { decode = False; continue; } - if (aa->name[0] == '-' && decode) continue; - numFilesProcessed++; - compress ( aa->name ); - } - } - } - else - - if (opMode == OM_UNZ) { - unzFailsExist = False; - if (srcMode == SM_I2O) { - uncompress ( NULL ); - } else { - decode = True; - for (aa = argList; aa != NULL; aa = aa->link) { - if (ISFLAG("--")) { decode = False; continue; } - if (aa->name[0] == '-' && decode) continue; - numFilesProcessed++; - uncompress ( aa->name ); - } - } - if (unzFailsExist) { - setExit(2); - exit(exitValue); - } - } - - else { - testFailsExist = False; - if (srcMode == SM_I2O) { - testf ( NULL ); - } else { - decode = True; - for (aa = argList; aa != NULL; aa = aa->link) { - if (ISFLAG("--")) { decode = False; continue; } - if (aa->name[0] == '-' && decode) continue; - numFilesProcessed++; - testf ( aa->name ); - } - } - if (testFailsExist && noisy) { - fprintf ( stderr, - "\n" - "You can use the `bzip2recover' program to attempt to recover\n" - "data from undamaged sections of corrupted files.\n\n" - ); - setExit(2); - exit(exitValue); - } - } - - /* Free the argument list memory to mollify leak detectors - (eg) Purify, Checker. Serves no other useful purpose. - */ - aa = argList; - while (aa != NULL) { - Cell* aa2 = aa->link; - if (aa->name != NULL) free(aa->name); - free(aa); - aa = aa2; - } - - return exitValue; -} - - -/*-----------------------------------------------------------*/ -/*--- end bzip2.c ---*/ -/*-----------------------------------------------------------*/ |