19e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* minigzip.c -- simulate gzip using the zlib compression library 2ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes * Copyright (C) 1995-2006, 2010, 2011 Jean-loup Gailly. 39e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * For conditions of distribution and use, see copyright notice in zlib.h 49e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 59e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 69e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* 79e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * minigzip is a minimal implementation of the gzip utility. This is 89e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * only an example of using zlib and isn't meant to replace the 99e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * full-featured gzip. No attempt is made to deal with file systems 109e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * limiting names to 14 or 8+3 characters, etc... Error checking is 119e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * very limited. So use minigzip only for testing; use gzip for the 129e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * real thing. On MSDOS, use only on file names without extension 139e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * or in pipe mode. 149e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 159e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 169e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* @(#) $Id$ */ 179e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 189e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#include "zlib.h" 19381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes#include <stdio.h> 209e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 219e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef STDC 229e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# include <string.h> 239e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# include <stdlib.h> 249e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 259e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 269e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef USE_MMAP 279e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# include <sys/types.h> 289e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# include <sys/mman.h> 299e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# include <sys/stat.h> 309e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 319e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 329e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__) 339e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# include <fcntl.h> 349e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# include <io.h> 35381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes# ifdef UNDER_CE 36381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes# include <stdlib.h> 37381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes# endif 389e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) 399e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#else 409e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define SET_BINARY_MODE(file) 419e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 429e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 439e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef VMS 449e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define unlink delete 459e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define GZ_SUFFIX "-gz" 469e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 479e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef RISCOS 489e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define unlink remove 499e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define GZ_SUFFIX "-gz" 509e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define fileno(file) file->__file 519e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 529e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 539e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# include <unix.h> /* for fileno */ 549e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 559e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 56381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes#if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE) 579e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifndef WIN32 /* unlink already in stdio.h for WIN32 */ 589e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project extern int unlink OF((const char *)); 599e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 60381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes#endif 61381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 62381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes#if defined(UNDER_CE) 63381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes# include <windows.h> 64381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes# define perror(s) pwinerror(s) 65381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 66381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes/* Map the Windows error number in ERROR to a locale-dependent error 67381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes message string and return a pointer to it. Typically, the values 68381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes for ERROR come from GetLastError. 69381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 70381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes The string pointed to shall not be modified by the application, 71381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes but may be overwritten by a subsequent call to strwinerror 72381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 73381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes The strwinerror function does not change the current setting 74381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes of GetLastError. */ 75381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 76381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughesstatic char *strwinerror (error) 77381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes DWORD error; 78381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes{ 79381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes static char buf[1024]; 80381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 81381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes wchar_t *msgbuf; 82381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes DWORD lasterr = GetLastError(); 83381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM 84381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes | FORMAT_MESSAGE_ALLOCATE_BUFFER, 85381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes NULL, 86381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes error, 87381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 0, /* Default language */ 88381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes (LPVOID)&msgbuf, 89381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 0, 90381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes NULL); 91381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (chars != 0) { 92381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes /* If there is an \r\n appended, zap it. */ 93381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (chars >= 2 94381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') { 95381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes chars -= 2; 96381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes msgbuf[chars] = 0; 97381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 98381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 99381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (chars > sizeof (buf) - 1) { 100381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes chars = sizeof (buf) - 1; 101381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes msgbuf[chars] = 0; 102381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 103381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 104381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes wcstombs(buf, msgbuf, chars + 1); 105381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes LocalFree(msgbuf); 106381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 107381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else { 108381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes sprintf(buf, "unknown win32 error (%ld)", error); 109381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 110381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 111381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes SetLastError(lasterr); 112381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes return buf; 113381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes} 114381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 115381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughesstatic void pwinerror (s) 116381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes const char *s; 117381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes{ 118381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (s && *s) 119381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes fprintf(stderr, "%s: %s\n", s, strwinerror(GetLastError ())); 120381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else 121381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes fprintf(stderr, "%s\n", strwinerror(GetLastError ())); 122381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes} 123381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 124381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes#endif /* UNDER_CE */ 1259e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 1269e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifndef GZ_SUFFIX 1279e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define GZ_SUFFIX ".gz" 1289e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 1299e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1) 1309e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 1319e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#define BUFLEN 16384 1329e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#define MAX_NAME_LEN 1024 1339e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 1349e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef MAXSEG_64K 1359e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define local static 1369e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project /* Needed for systems with limitation on stack size. */ 1379e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#else 1389e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define local 1399e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 1409e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 141ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes#ifdef Z_SOLO 142ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes/* for Z_SOLO, create simplified gz* functions using deflate and inflate */ 143ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 144ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes#if defined(Z_HAVE_UNISTD_H) || defined(Z_LARGE) 145ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes# include <unistd.h> /* for unlink() */ 146ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes#endif 147ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 148ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesvoid *myalloc OF((void *, unsigned, unsigned)); 149ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesvoid myfree OF((void *, void *)); 150ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 151ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesvoid *myalloc(q, n, m) 152ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes void *q; 153ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned n, m; 154ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 155ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes q = Z_NULL; 156ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return calloc(n, m); 157ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 158ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 159ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesvoid myfree(q, p) 160ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes void *q, *p; 161ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 162ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes q = Z_NULL; 163ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes free(p); 164ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 165ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 166ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughestypedef struct gzFile_s { 167ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes FILE *file; 168ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int write; 169ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int err; 170ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes char *msg; 171ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes z_stream strm; 172ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} *gzFile; 173ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 174ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gzopen OF((const char *, const char *)); 175ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gzdopen OF((int, const char *)); 176ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gz_open OF((const char *, int, const char *)); 177ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 178ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gzopen(path, mode) 179ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesconst char *path; 180ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesconst char *mode; 181ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 182ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return gz_open(path, -1, mode); 183ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 184ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 185ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gzdopen(fd, mode) 186ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint fd; 187ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesconst char *mode; 188ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 189ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return gz_open(NULL, fd, mode); 190ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 191ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 192ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gz_open(path, fd, mode) 193ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes const char *path; 194ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int fd; 195ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes const char *mode; 196ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 197ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gzFile gz; 198ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int ret; 199ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 20009eb358bbbb9aad3fe48dd3368c8a7a481cbda1cElliott Hughes gz = malloc(sizeof(struct gzFile_s)); 201ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz == NULL) 202ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return NULL; 203ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->write = strchr(mode, 'w') != NULL; 204ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->strm.zalloc = myalloc; 205ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->strm.zfree = myfree; 206ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->strm.opaque = Z_NULL; 207ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz->write) 208ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes ret = deflateInit2(&(gz->strm), -1, 8, 15 + 16, 8, 0); 209ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes else { 210ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->strm.next_in = 0; 211ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->strm.avail_in = Z_NULL; 212ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes ret = inflateInit2(&(gz->strm), 15 + 16); 213ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } 214ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (ret != Z_OK) { 215ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes free(gz); 216ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return NULL; 217ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } 218ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->file = path == NULL ? fdopen(fd, gz->write ? "wb" : "rb") : 219ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes fopen(path, gz->write ? "wb" : "rb"); 220ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz->file == NULL) { 221ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->write ? deflateEnd(&(gz->strm)) : inflateEnd(&(gz->strm)); 222ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes free(gz); 223ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return NULL; 224ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } 225ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->err = 0; 226ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->msg = ""; 227ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return gz; 228ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 229ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 230ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzwrite OF((gzFile, const void *, unsigned)); 231ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 232ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzwrite(gz, buf, len) 233ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gzFile gz; 234ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes const void *buf; 235ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned len; 236ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 237ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes z_stream *strm; 238ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned char out[BUFLEN]; 239ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 240ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz == NULL || !gz->write) 241ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return 0; 242ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm = &(gz->strm); 243ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_in = (void *)buf; 244ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_in = len; 245ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes do { 246ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_out = out; 247ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_out = BUFLEN; 248ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes (void)deflate(strm, Z_NO_FLUSH); 249ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes fwrite(out, 1, BUFLEN - strm->avail_out, gz->file); 250ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } while (strm->avail_out == 0); 251ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return len; 252ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 253ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 254ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzread OF((gzFile, void *, unsigned)); 255ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 256ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzread(gz, buf, len) 257ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gzFile gz; 258ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes void *buf; 259ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned len; 260ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 261ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int ret; 262ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned got; 263ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned char in[1]; 264ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes z_stream *strm; 265ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 266ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz == NULL || gz->write) 267ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return 0; 268ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz->err) 269ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return 0; 270ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm = &(gz->strm); 271ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_out = (void *)buf; 272ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_out = len; 273ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes do { 274ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes got = fread(in, 1, 1, gz->file); 275ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (got == 0) 276ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes break; 277ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_in = in; 278ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_in = 1; 279ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes ret = inflate(strm, Z_NO_FLUSH); 280ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (ret == Z_DATA_ERROR) { 281ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->err = Z_DATA_ERROR; 282ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->msg = strm->msg; 283ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return 0; 284ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } 285ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (ret == Z_STREAM_END) 286ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes inflateReset(strm); 287ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } while (strm->avail_out); 288ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return len - strm->avail_out; 289ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 290ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 291ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzclose OF((gzFile)); 292ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 293ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzclose(gz) 294ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gzFile gz; 295ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 296ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes z_stream *strm; 297ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned char out[BUFLEN]; 298ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 299ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz == NULL) 300ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return Z_STREAM_ERROR; 301ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm = &(gz->strm); 302ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz->write) { 303ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_in = Z_NULL; 304ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_in = 0; 305ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes do { 306ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_out = out; 307ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_out = BUFLEN; 308ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes (void)deflate(strm, Z_FINISH); 309ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes fwrite(out, 1, BUFLEN - strm->avail_out, gz->file); 310ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } while (strm->avail_out == 0); 311ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes deflateEnd(strm); 312ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } 313ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes else 314ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes inflateEnd(strm); 315ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes fclose(gz->file); 316ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes free(gz); 317ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return Z_OK; 318ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 319ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 320ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesconst char *gzerror OF((gzFile, int *)); 321ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 322ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesconst char *gzerror(gz, err) 323ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gzFile gz; 324ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int *err; 325ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 326ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes *err = gz->err; 327ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return gz->msg; 328ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 329ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 330ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes#endif 331ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 3329e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectchar *prog; 3339e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3349e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid error OF((const char *msg)); 3359e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid gz_compress OF((FILE *in, gzFile out)); 3369e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef USE_MMAP 3379e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectint gz_compress_mmap OF((FILE *in, gzFile out)); 3389e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 3399e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid gz_uncompress OF((gzFile in, FILE *out)); 3409e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid file_compress OF((char *file, char *mode)); 3419e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid file_uncompress OF((char *file)); 3429e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectint main OF((int argc, char *argv[])); 3439e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3449e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 3459e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * Display error message and exit 3469e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 3479e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid error(msg) 3489e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project const char *msg; 3499e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 3509e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project fprintf(stderr, "%s: %s\n", prog, msg); 3519e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 3529e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 3539e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3549e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 3559e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * Compress input to output then close both files. 3569e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 3579e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3589e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid gz_compress(in, out) 3599e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project FILE *in; 3609e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile out; 3619e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 3629e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project local char buf[BUFLEN]; 3639e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int len; 3649e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int err; 3659e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3669e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef USE_MMAP 3679e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project /* Try first compressing with mmap. If mmap fails (minigzip used in a 3689e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * pipe), use the normal fread loop. 3699e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 3709e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (gz_compress_mmap(in, out) == Z_OK) return; 3719e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 3729e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project for (;;) { 3739e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project len = (int)fread(buf, 1, sizeof(buf), in); 3749e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (ferror(in)) { 3759e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project perror("fread"); 3769e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 3779e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 3789e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (len == 0) break; 3799e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3809e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (gzwrite(out, buf, (unsigned)len) != len) error(gzerror(out, &err)); 3819e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 3829e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project fclose(in); 3839e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (gzclose(out) != Z_OK) error("failed gzclose"); 3849e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 3859e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3869e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef USE_MMAP /* MMAP version, Miguel Albrecht <malbrech@eso.org> */ 3879e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3889e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* Try compressing the input file at once using mmap. Return Z_OK if 3899e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * if success, Z_ERRNO otherwise. 3909e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 3919e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectint gz_compress_mmap(in, out) 3929e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project FILE *in; 3939e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile out; 3949e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 3959e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int len; 3969e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int err; 3979e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int ifd = fileno(in); 3989e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project caddr_t buf; /* mmap'ed buffer for the entire input file */ 3999e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project off_t buf_len; /* length of the input file */ 4009e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project struct stat sb; 4019e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4029e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project /* Determine the size of the file, needed for mmap: */ 4039e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (fstat(ifd, &sb) < 0) return Z_ERRNO; 4049e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project buf_len = sb.st_size; 4059e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (buf_len <= 0) return Z_ERRNO; 4069e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4079e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project /* Now do the actual mmap: */ 4089e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0); 4099e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (buf == (caddr_t)(-1)) return Z_ERRNO; 4109e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4119e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project /* Compress the whole file at once: */ 4129e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project len = gzwrite(out, (char *)buf, (unsigned)buf_len); 4139e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4149e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (len != (int)buf_len) error(gzerror(out, &err)); 4159e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4169e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project munmap(buf, buf_len); 4179e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project fclose(in); 4189e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (gzclose(out) != Z_OK) error("failed gzclose"); 4199e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project return Z_OK; 4209e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 4219e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif /* USE_MMAP */ 4229e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4239e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 4249e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * Uncompress input to output then close both files. 4259e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 4269e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid gz_uncompress(in, out) 4279e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile in; 4289e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project FILE *out; 4299e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 4309e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project local char buf[BUFLEN]; 4319e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int len; 4329e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int err; 4339e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4349e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project for (;;) { 4359e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project len = gzread(in, buf, sizeof(buf)); 4369e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (len < 0) error (gzerror(in, &err)); 4379e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (len == 0) break; 4389e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4399e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if ((int)fwrite(buf, 1, (unsigned)len, out) != len) { 4409e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project error("failed fwrite"); 4419e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 4429e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 4439e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (fclose(out)) error("failed fclose"); 4449e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4459e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (gzclose(in) != Z_OK) error("failed gzclose"); 4469e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 4479e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4489e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4499e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 4509e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * Compress the given file: create a corresponding .gz file and remove the 4519e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * original. 4529e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 4539e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid file_compress(file, mode) 4549e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project char *file; 4559e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project char *mode; 4569e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 4579e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project local char outfile[MAX_NAME_LEN]; 4589e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project FILE *in; 4599e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile out; 4609e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 461381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) { 462381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes fprintf(stderr, "%s: filename too long\n", prog); 463381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes exit(1); 464381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 465381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 4669e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project strcpy(outfile, file); 4679e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project strcat(outfile, GZ_SUFFIX); 4689e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4699e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project in = fopen(file, "rb"); 4709e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (in == NULL) { 4719e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project perror(file); 4729e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 4739e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 4749e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project out = gzopen(outfile, mode); 4759e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (out == NULL) { 4769e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile); 4779e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 4789e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 4799e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gz_compress(in, out); 4809e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4819e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project unlink(file); 4829e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 4839e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4849e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4859e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 4869e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * Uncompress the given file and remove the original. 4879e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 4889e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid file_uncompress(file) 4899e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project char *file; 4909e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 4919e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project local char buf[MAX_NAME_LEN]; 4929e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project char *infile, *outfile; 4939e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project FILE *out; 4949e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile in; 495381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes size_t len = strlen(file); 496381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 497381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) { 498381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes fprintf(stderr, "%s: filename too long\n", prog); 499381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes exit(1); 500381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 5019e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5029e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project strcpy(buf, file); 5039e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5049e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) { 5059e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project infile = file; 5069e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outfile = buf; 5079e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outfile[len-3] = '\0'; 5089e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } else { 5099e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outfile = file; 5109e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project infile = buf; 5119e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project strcat(infile, GZ_SUFFIX); 5129e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 5139e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project in = gzopen(infile, "rb"); 5149e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (in == NULL) { 5159e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project fprintf(stderr, "%s: can't gzopen %s\n", prog, infile); 5169e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 5179e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 5189e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project out = fopen(outfile, "wb"); 5199e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (out == NULL) { 5209e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project perror(file); 5219e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 5229e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 5239e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5249e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gz_uncompress(in, out); 5259e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5269e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project unlink(infile); 5279e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 5289e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5299e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5309e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 531381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes * Usage: minigzip [-c] [-d] [-f] [-h] [-r] [-1 to -9] [files...] 532381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes * -c : write to standard output 5339e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * -d : decompress 5349e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * -f : compress with Z_FILTERED 5359e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * -h : compress with Z_HUFFMAN_ONLY 5369e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * -r : compress with Z_RLE 5379e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * -1 to -9 : compression level 5389e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 5399e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5409e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectint main(argc, argv) 5419e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int argc; 5429e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project char *argv[]; 5439e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 544381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes int copyout = 0; 5459e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int uncompr = 0; 5469e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile file; 547381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes char *bname, outmode[20]; 5489e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5499e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project strcpy(outmode, "wb6 "); 5509e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5519e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project prog = argv[0]; 552381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes bname = strrchr(argv[0], '/'); 553381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (bname) 554381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes bname++; 555381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else 556381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes bname = argv[0]; 5579e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project argc--, argv++; 5589e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 559381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (!strcmp(bname, "gunzip")) 560381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes uncompr = 1; 561381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else if (!strcmp(bname, "zcat")) 562381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes copyout = uncompr = 1; 563381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 5649e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project while (argc > 0) { 565381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (strcmp(*argv, "-c") == 0) 566381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes copyout = 1; 567381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else if (strcmp(*argv, "-d") == 0) 5689e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project uncompr = 1; 5699e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project else if (strcmp(*argv, "-f") == 0) 5709e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outmode[3] = 'f'; 5719e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project else if (strcmp(*argv, "-h") == 0) 5729e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outmode[3] = 'h'; 5739e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project else if (strcmp(*argv, "-r") == 0) 5749e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outmode[3] = 'R'; 5759e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project else if ((*argv)[0] == '-' && (*argv)[1] >= '1' && (*argv)[1] <= '9' && 5769e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project (*argv)[2] == 0) 5779e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outmode[2] = (*argv)[1]; 5789e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project else 5799e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project break; 5809e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project argc--, argv++; 5819e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 5829e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (outmode[3] == ' ') 5839e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outmode[3] = 0; 5849e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (argc == 0) { 5859e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project SET_BINARY_MODE(stdin); 5869e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project SET_BINARY_MODE(stdout); 5879e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (uncompr) { 5889e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project file = gzdopen(fileno(stdin), "rb"); 5899e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (file == NULL) error("can't gzdopen stdin"); 5909e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gz_uncompress(file, stdout); 5919e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } else { 5929e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project file = gzdopen(fileno(stdout), outmode); 5939e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (file == NULL) error("can't gzdopen stdout"); 5949e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gz_compress(stdin, file); 5959e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 5969e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } else { 597381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (copyout) { 598381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes SET_BINARY_MODE(stdout); 599381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 6009e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project do { 6019e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (uncompr) { 602381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (copyout) { 603381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes file = gzopen(*argv, "rb"); 604381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (file == NULL) 605381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes fprintf(stderr, "%s: can't gzopen %s\n", prog, *argv); 606381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else 607381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes gz_uncompress(file, stdout); 608381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } else { 609381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes file_uncompress(*argv); 610381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 6119e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } else { 612381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (copyout) { 613381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes FILE * in = fopen(*argv, "rb"); 614381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 615381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (in == NULL) { 616381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes perror(*argv); 617381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } else { 618381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes file = gzdopen(fileno(stdout), outmode); 619381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (file == NULL) error("can't gzdopen stdout"); 620381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 621381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes gz_compress(in, file); 622381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 623381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 624381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } else { 625381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes file_compress(*argv, outmode); 626381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 6279e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 6289e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } while (argv++, --argc); 6299e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 6309e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project return 0; 6319e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 632