19e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* minigzip.c -- simulate gzip using the zlib compression library 27291b8caf18844362881750df5cebd045d672c43Leon Scroggins III * Copyright (C) 1995-2006, 2010, 2011, 2016 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 437291b8caf18844362881750df5cebd045d672c43Leon Scroggins III#if defined(_MSC_VER) && _MSC_VER < 1900 4404351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes# define snprintf _snprintf 4504351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#endif 4604351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes 479e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef VMS 489e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define unlink delete 499e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define GZ_SUFFIX "-gz" 509e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 519e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef RISCOS 529e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define unlink remove 539e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define GZ_SUFFIX "-gz" 549e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define fileno(file) file->__file 559e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 569e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 579e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# include <unix.h> /* for fileno */ 589e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 599e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 60381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes#if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE) 619e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifndef WIN32 /* unlink already in stdio.h for WIN32 */ 629e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project extern int unlink OF((const char *)); 639e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 64381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes#endif 65381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 66381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes#if defined(UNDER_CE) 67381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes# include <windows.h> 68381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes# define perror(s) pwinerror(s) 69381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 70381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes/* Map the Windows error number in ERROR to a locale-dependent error 71381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes message string and return a pointer to it. Typically, the values 72381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes for ERROR come from GetLastError. 73381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 74381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes The string pointed to shall not be modified by the application, 75381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes but may be overwritten by a subsequent call to strwinerror 76381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 77381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes The strwinerror function does not change the current setting 78381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes of GetLastError. */ 79381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 80381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughesstatic char *strwinerror (error) 81381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes DWORD error; 82381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes{ 83381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes static char buf[1024]; 84381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 85381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes wchar_t *msgbuf; 86381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes DWORD lasterr = GetLastError(); 87381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM 88381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes | FORMAT_MESSAGE_ALLOCATE_BUFFER, 89381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes NULL, 90381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes error, 91381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 0, /* Default language */ 92381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes (LPVOID)&msgbuf, 93381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 0, 94381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes NULL); 95381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (chars != 0) { 96381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes /* If there is an \r\n appended, zap it. */ 97381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (chars >= 2 98381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') { 99381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes chars -= 2; 100381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes msgbuf[chars] = 0; 101381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 102381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 103381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (chars > sizeof (buf) - 1) { 104381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes chars = sizeof (buf) - 1; 105381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes msgbuf[chars] = 0; 106381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 107381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 108381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes wcstombs(buf, msgbuf, chars + 1); 109381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes LocalFree(msgbuf); 110381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 111381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else { 112381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes sprintf(buf, "unknown win32 error (%ld)", error); 113381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 114381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 115381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes SetLastError(lasterr); 116381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes return buf; 117381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes} 118381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 119381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughesstatic void pwinerror (s) 120381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes const char *s; 121381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes{ 122381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (s && *s) 123381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes fprintf(stderr, "%s: %s\n", s, strwinerror(GetLastError ())); 124381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else 125381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes fprintf(stderr, "%s\n", strwinerror(GetLastError ())); 126381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes} 127381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 128381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes#endif /* UNDER_CE */ 1299e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 1309e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifndef GZ_SUFFIX 1319e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define GZ_SUFFIX ".gz" 1329e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 1339e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1) 1349e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 1359e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#define BUFLEN 16384 1369e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#define MAX_NAME_LEN 1024 1379e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 1389e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef MAXSEG_64K 1399e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define local static 1409e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project /* Needed for systems with limitation on stack size. */ 1419e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#else 1429e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project# define local 1439e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 1449e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 145ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes#ifdef Z_SOLO 146ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes/* for Z_SOLO, create simplified gz* functions using deflate and inflate */ 147ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 148ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes#if defined(Z_HAVE_UNISTD_H) || defined(Z_LARGE) 149ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes# include <unistd.h> /* for unlink() */ 150ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes#endif 151ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 152ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesvoid *myalloc OF((void *, unsigned, unsigned)); 153ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesvoid myfree OF((void *, void *)); 154ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 155ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesvoid *myalloc(q, n, m) 156ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes void *q; 157ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned n, m; 158ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 1597291b8caf18844362881750df5cebd045d672c43Leon Scroggins III (void)q; 160ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return calloc(n, m); 161ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 162ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 163ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesvoid myfree(q, p) 164ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes void *q, *p; 165ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 1667291b8caf18844362881750df5cebd045d672c43Leon Scroggins III (void)q; 167ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes free(p); 168ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 169ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 170ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughestypedef struct gzFile_s { 171ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes FILE *file; 172ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int write; 173ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int err; 174ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes char *msg; 175ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes z_stream strm; 176ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} *gzFile; 177ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 178ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gzopen OF((const char *, const char *)); 179ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gzdopen OF((int, const char *)); 180ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gz_open OF((const char *, int, const char *)); 181ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 182ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gzopen(path, mode) 183ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesconst char *path; 184ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesconst char *mode; 185ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 186ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return gz_open(path, -1, mode); 187ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 188ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 189ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gzdopen(fd, mode) 190ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint fd; 191ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesconst char *mode; 192ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 193ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return gz_open(NULL, fd, mode); 194ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 195ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 196ee9e11d0d4e3361533860bf04896abb86a291bfbElliott HughesgzFile gz_open(path, fd, mode) 197ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes const char *path; 198ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int fd; 199ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes const char *mode; 200ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 201ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gzFile gz; 202ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int ret; 203ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 20409eb358bbbb9aad3fe48dd3368c8a7a481cbda1cElliott Hughes gz = malloc(sizeof(struct gzFile_s)); 205ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz == NULL) 206ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return NULL; 207ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->write = strchr(mode, 'w') != NULL; 208ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->strm.zalloc = myalloc; 209ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->strm.zfree = myfree; 210ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->strm.opaque = Z_NULL; 211ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz->write) 212ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes ret = deflateInit2(&(gz->strm), -1, 8, 15 + 16, 8, 0); 213ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes else { 214ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->strm.next_in = 0; 215ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->strm.avail_in = Z_NULL; 216ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes ret = inflateInit2(&(gz->strm), 15 + 16); 217ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } 218ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (ret != Z_OK) { 219ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes free(gz); 220ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return NULL; 221ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } 222ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->file = path == NULL ? fdopen(fd, gz->write ? "wb" : "rb") : 223ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes fopen(path, gz->write ? "wb" : "rb"); 224ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz->file == NULL) { 225ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->write ? deflateEnd(&(gz->strm)) : inflateEnd(&(gz->strm)); 226ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes free(gz); 227ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return NULL; 228ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } 229ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->err = 0; 230ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->msg = ""; 231ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return gz; 232ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 233ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 234ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzwrite OF((gzFile, const void *, unsigned)); 235ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 236ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzwrite(gz, buf, len) 237ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gzFile gz; 238ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes const void *buf; 239ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned len; 240ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 241ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes z_stream *strm; 242ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned char out[BUFLEN]; 243ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 244ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz == NULL || !gz->write) 245ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return 0; 246ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm = &(gz->strm); 247ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_in = (void *)buf; 248ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_in = len; 249ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes do { 250ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_out = out; 251ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_out = BUFLEN; 252ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes (void)deflate(strm, Z_NO_FLUSH); 253ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes fwrite(out, 1, BUFLEN - strm->avail_out, gz->file); 254ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } while (strm->avail_out == 0); 255ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return len; 256ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 257ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 258ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzread OF((gzFile, void *, unsigned)); 259ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 260ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzread(gz, buf, len) 261ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gzFile gz; 262ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes void *buf; 263ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned len; 264ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 265ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int ret; 266ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned got; 267ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned char in[1]; 268ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes z_stream *strm; 269ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 270ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz == NULL || gz->write) 271ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return 0; 272ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz->err) 273ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return 0; 274ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm = &(gz->strm); 275ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_out = (void *)buf; 276ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_out = len; 277ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes do { 278ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes got = fread(in, 1, 1, gz->file); 279ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (got == 0) 280ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes break; 281ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_in = in; 282ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_in = 1; 283ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes ret = inflate(strm, Z_NO_FLUSH); 284ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (ret == Z_DATA_ERROR) { 285ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->err = Z_DATA_ERROR; 286ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gz->msg = strm->msg; 287ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return 0; 288ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } 289ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (ret == Z_STREAM_END) 290ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes inflateReset(strm); 291ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } while (strm->avail_out); 292ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return len - strm->avail_out; 293ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 294ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 295ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzclose OF((gzFile)); 296ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 297ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesint gzclose(gz) 298ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gzFile gz; 299ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 300ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes z_stream *strm; 301ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes unsigned char out[BUFLEN]; 302ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 303ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz == NULL) 304ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return Z_STREAM_ERROR; 305ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm = &(gz->strm); 306ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes if (gz->write) { 307ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_in = Z_NULL; 308ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_in = 0; 309ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes do { 310ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->next_out = out; 311ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes strm->avail_out = BUFLEN; 312ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes (void)deflate(strm, Z_FINISH); 313ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes fwrite(out, 1, BUFLEN - strm->avail_out, gz->file); 314ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } while (strm->avail_out == 0); 315ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes deflateEnd(strm); 316ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes } 317ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes else 318ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes inflateEnd(strm); 319ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes fclose(gz->file); 320ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes free(gz); 321ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return Z_OK; 322ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 323ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 324ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesconst char *gzerror OF((gzFile, int *)); 325ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 326ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughesconst char *gzerror(gz, err) 327ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes gzFile gz; 328ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes int *err; 329ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes{ 330ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes *err = gz->err; 331ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes return gz->msg; 332ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes} 333ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 334ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes#endif 335ee9e11d0d4e3361533860bf04896abb86a291bfbElliott Hughes 3367291b8caf18844362881750df5cebd045d672c43Leon Scroggins IIIstatic char *prog; 3379e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3389e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid error OF((const char *msg)); 3399e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid gz_compress OF((FILE *in, gzFile out)); 3409e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef USE_MMAP 3419e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectint gz_compress_mmap OF((FILE *in, gzFile out)); 3429e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 3439e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid gz_uncompress OF((gzFile in, FILE *out)); 3449e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid file_compress OF((char *file, char *mode)); 3459e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid file_uncompress OF((char *file)); 3469e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectint main OF((int argc, char *argv[])); 3479e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3489e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 3499e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * Display error message and exit 3509e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 3519e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid error(msg) 3529e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project const char *msg; 3539e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 3549e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project fprintf(stderr, "%s: %s\n", prog, msg); 3559e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 3569e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 3579e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3589e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 3599e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * Compress input to output then close both files. 3609e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 3619e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3629e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid gz_compress(in, out) 3639e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project FILE *in; 3649e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile out; 3659e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 3669e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project local char buf[BUFLEN]; 3679e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int len; 3689e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int err; 3699e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3709e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef USE_MMAP 3719e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project /* Try first compressing with mmap. If mmap fails (minigzip used in a 3729e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * pipe), use the normal fread loop. 3739e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 3749e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (gz_compress_mmap(in, out) == Z_OK) return; 3759e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif 3769e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project for (;;) { 3779e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project len = (int)fread(buf, 1, sizeof(buf), in); 3789e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (ferror(in)) { 3799e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project perror("fread"); 3809e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 3819e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 3829e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (len == 0) break; 3839e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3849e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (gzwrite(out, buf, (unsigned)len) != len) error(gzerror(out, &err)); 3859e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 3869e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project fclose(in); 3879e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (gzclose(out) != Z_OK) error("failed gzclose"); 3889e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 3899e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3909e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#ifdef USE_MMAP /* MMAP version, Miguel Albrecht <malbrech@eso.org> */ 3919e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 3929e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* Try compressing the input file at once using mmap. Return Z_OK if 3939e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * if success, Z_ERRNO otherwise. 3949e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 3959e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectint gz_compress_mmap(in, out) 3969e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project FILE *in; 3979e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile out; 3989e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 3999e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int len; 4009e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int err; 4019e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int ifd = fileno(in); 4029e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project caddr_t buf; /* mmap'ed buffer for the entire input file */ 4039e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project off_t buf_len; /* length of the input file */ 4049e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project struct stat sb; 4059e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4069e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project /* Determine the size of the file, needed for mmap: */ 4079e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (fstat(ifd, &sb) < 0) return Z_ERRNO; 4089e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project buf_len = sb.st_size; 4099e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (buf_len <= 0) return Z_ERRNO; 4109e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4119e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project /* Now do the actual mmap: */ 4129e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0); 4139e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (buf == (caddr_t)(-1)) return Z_ERRNO; 4149e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4159e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project /* Compress the whole file at once: */ 4169e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project len = gzwrite(out, (char *)buf, (unsigned)buf_len); 4179e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4189e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (len != (int)buf_len) error(gzerror(out, &err)); 4199e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4209e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project munmap(buf, buf_len); 4219e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project fclose(in); 4229e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (gzclose(out) != Z_OK) error("failed gzclose"); 4239e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project return Z_OK; 4249e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 4259e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project#endif /* USE_MMAP */ 4269e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4279e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 4289e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * Uncompress input to output then close both files. 4299e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 4309e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid gz_uncompress(in, out) 4319e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile in; 4329e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project FILE *out; 4339e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 4349e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project local char buf[BUFLEN]; 4359e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int len; 4369e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int err; 4379e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4389e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project for (;;) { 4399e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project len = gzread(in, buf, sizeof(buf)); 4409e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (len < 0) error (gzerror(in, &err)); 4419e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (len == 0) break; 4429e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4439e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if ((int)fwrite(buf, 1, (unsigned)len, out) != len) { 4449e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project error("failed fwrite"); 4459e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 4469e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 4479e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (fclose(out)) error("failed fclose"); 4489e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4499e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (gzclose(in) != Z_OK) error("failed gzclose"); 4509e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 4519e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4529e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4539e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 4549e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * Compress the given file: create a corresponding .gz file and remove the 4559e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * original. 4569e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 4579e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid file_compress(file, mode) 4589e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project char *file; 4599e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project char *mode; 4609e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 4619e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project local char outfile[MAX_NAME_LEN]; 4629e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project FILE *in; 4639e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile out; 4649e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 465381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) { 466381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes fprintf(stderr, "%s: filename too long\n", prog); 467381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes exit(1); 468381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 469381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 47004351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#if !defined(NO_snprintf) && !defined(NO_vsnprintf) 47104351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes snprintf(outfile, sizeof(outfile), "%s%s", file, GZ_SUFFIX); 47204351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#else 4739e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project strcpy(outfile, file); 4749e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project strcat(outfile, GZ_SUFFIX); 47504351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#endif 4769e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4779e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project in = fopen(file, "rb"); 4789e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (in == NULL) { 4799e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project perror(file); 4809e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 4819e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 4829e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project out = gzopen(outfile, mode); 4839e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (out == NULL) { 4849e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile); 4859e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 4869e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 4879e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gz_compress(in, out); 4889e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4899e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project unlink(file); 4909e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 4919e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4929e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 4939e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 4949e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * Uncompress the given file and remove the original. 4959e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 4969e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectvoid file_uncompress(file) 4979e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project char *file; 4989e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 4999e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project local char buf[MAX_NAME_LEN]; 5009e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project char *infile, *outfile; 5019e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project FILE *out; 5029e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile in; 5037291b8caf18844362881750df5cebd045d672c43Leon Scroggins III unsigned len = strlen(file); 504381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 505381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) { 506381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes fprintf(stderr, "%s: filename too long\n", prog); 507381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes exit(1); 508381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 5099e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 51004351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#if !defined(NO_snprintf) && !defined(NO_vsnprintf) 51104351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes snprintf(buf, sizeof(buf), "%s", file); 51204351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#else 5139e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project strcpy(buf, file); 51404351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#endif 5159e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5169e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) { 5179e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project infile = file; 5189e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outfile = buf; 5199e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outfile[len-3] = '\0'; 5209e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } else { 5219e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outfile = file; 5229e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project infile = buf; 52304351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#if !defined(NO_snprintf) && !defined(NO_vsnprintf) 52404351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes snprintf(buf + len, sizeof(buf) - len, "%s", GZ_SUFFIX); 52504351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#else 5269e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project strcat(infile, GZ_SUFFIX); 52704351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#endif 5289e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 5299e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project in = gzopen(infile, "rb"); 5309e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (in == NULL) { 5319e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project fprintf(stderr, "%s: can't gzopen %s\n", prog, infile); 5329e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 5339e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 5349e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project out = fopen(outfile, "wb"); 5359e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (out == NULL) { 5369e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project perror(file); 5379e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project exit(1); 5389e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 5399e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5409e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gz_uncompress(in, out); 5419e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5429e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project unlink(infile); 5439e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 5449e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5459e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5469e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project/* =========================================================================== 547381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes * Usage: minigzip [-c] [-d] [-f] [-h] [-r] [-1 to -9] [files...] 548381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes * -c : write to standard output 5499e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * -d : decompress 5509e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * -f : compress with Z_FILTERED 5519e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * -h : compress with Z_HUFFMAN_ONLY 5529e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * -r : compress with Z_RLE 5539e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project * -1 to -9 : compression level 5549e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project */ 5559e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5569e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Projectint main(argc, argv) 5579e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int argc; 5589e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project char *argv[]; 5599e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project{ 560381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes int copyout = 0; 5619e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project int uncompr = 0; 5629e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gzFile file; 563381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes char *bname, outmode[20]; 5649e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 56504351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#if !defined(NO_snprintf) && !defined(NO_vsnprintf) 56604351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes snprintf(outmode, sizeof(outmode), "%s", "wb6 "); 56704351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#else 5689e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project strcpy(outmode, "wb6 "); 56904351a92ecc8429c999acbfc5dfe5aa8bee1d19dElliott Hughes#endif 5709e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 5719e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project prog = argv[0]; 572381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes bname = strrchr(argv[0], '/'); 573381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (bname) 574381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes bname++; 575381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else 576381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes bname = argv[0]; 5779e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project argc--, argv++; 5789e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project 579381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (!strcmp(bname, "gunzip")) 580381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes uncompr = 1; 581381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else if (!strcmp(bname, "zcat")) 582381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes copyout = uncompr = 1; 583381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 5849e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project while (argc > 0) { 585381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (strcmp(*argv, "-c") == 0) 586381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes copyout = 1; 587381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else if (strcmp(*argv, "-d") == 0) 5889e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project uncompr = 1; 5899e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project else if (strcmp(*argv, "-f") == 0) 5909e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outmode[3] = 'f'; 5919e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project else if (strcmp(*argv, "-h") == 0) 5929e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outmode[3] = 'h'; 5939e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project else if (strcmp(*argv, "-r") == 0) 5949e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outmode[3] = 'R'; 5959e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project else if ((*argv)[0] == '-' && (*argv)[1] >= '1' && (*argv)[1] <= '9' && 5969e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project (*argv)[2] == 0) 5979e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outmode[2] = (*argv)[1]; 5989e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project else 5999e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project break; 6009e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project argc--, argv++; 6019e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 6029e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (outmode[3] == ' ') 6039e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project outmode[3] = 0; 6049e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (argc == 0) { 6059e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project SET_BINARY_MODE(stdin); 6069e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project SET_BINARY_MODE(stdout); 6079e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (uncompr) { 6089e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project file = gzdopen(fileno(stdin), "rb"); 6099e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (file == NULL) error("can't gzdopen stdin"); 6109e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gz_uncompress(file, stdout); 6119e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } else { 6129e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project file = gzdopen(fileno(stdout), outmode); 6139e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (file == NULL) error("can't gzdopen stdout"); 6149e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project gz_compress(stdin, file); 6159e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 6169e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } else { 617381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (copyout) { 618381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes SET_BINARY_MODE(stdout); 619381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 6209e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project do { 6219e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project if (uncompr) { 622381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (copyout) { 623381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes file = gzopen(*argv, "rb"); 624381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (file == NULL) 625381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes fprintf(stderr, "%s: can't gzopen %s\n", prog, *argv); 626381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes else 627381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes gz_uncompress(file, stdout); 628381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } else { 629381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes file_uncompress(*argv); 630381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 6319e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } else { 632381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (copyout) { 633381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes FILE * in = fopen(*argv, "rb"); 634381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 635381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (in == NULL) { 636381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes perror(*argv); 637381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } else { 638381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes file = gzdopen(fileno(stdout), outmode); 639381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes if (file == NULL) error("can't gzdopen stdout"); 640381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 641381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes gz_compress(in, file); 642381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 643381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes 644381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } else { 645381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes file_compress(*argv, outmode); 646381716e9396b55b1adb8235b020c37344f60ab07Elliott Hughes } 6479e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 6489e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } while (argv++, --argc); 6499e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project } 6509e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project return 0; 6519e38dfa2f95fce609707a0941f10af9a785288deThe Android Open Source Project} 652