diff options
Diffstat (limited to 'gunzip.c')
| -rw-r--r-- | gunzip.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/gunzip.c b/gunzip.c deleted file mode 100644 index 430bc63..0000000 --- a/gunzip.c +++ /dev/null @@ -1,183 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * Gzip implementation for busybox - * - * Based on GNU gzip v1.2.4 Copyright (C) 1992-1993 Jean-loup Gailly. - * - * Originally adjusted for busybox by Sven Rudolph <sr1@inf.tu-dresden.de> - * based on gzip sources - * - * Adjusted further by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> - * to support files as well as stdin/stdout, and to generally behave itself wrt - * command line handling. - * - * General cleanup to better adhere to the style guide and make use of standard - * busybox functions by Glenn McGrath <bug1@optushome.com.au> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * - * gzip (GNU zip) -- compress files with zip algorithm and 'compress' interface - * Copyright (C) 1992-1993 Jean-loup Gailly - * The unzip code was written and put in the public domain by Mark Adler. - * Portions of the lzw code are derived from the public domain 'compress' - * written by Spencer Thomas, Joe Orost, James Woods, Jim McKie, Steve Davies, - * Ken Turkowski, Dave Mack and Peter Jannesen. - * - * See the license_msg below and the file COPYING for the software license. - * See the file algorithm.doc for the compression algorithms and file formats. - */ - -#if 0 -static char *license_msg[] = { - " Copyright (C) 1992-1993 Jean-loup Gailly", - " This program is free software; you can redistribute it and/or modify", - " it under the terms of the GNU General Public License as published by", - " the Free Software Foundation; either version 2, or (at your option)", - " any later version.", - "", - " This program is distributed in the hope that it will be useful,", - " but WITHOUT ANY WARRANTY; without even the implied warranty of", - " MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the", - " GNU General Public License for more details.", - "", - " You should have received a copy of the GNU General Public License", - " along with this program; if not, write to the Free Software", - " Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.", - 0 -}; -#endif - -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <getopt.h> -#include "busybox.h" - -extern int gunzip_main(int argc, char **argv) -{ - FILE *in_file = stdin; - FILE *out_file = NULL; - struct stat stat_buf; - - char *if_name = NULL; - char *of_name = NULL; - char *delete_file_name = NULL; - - const int gunzip_to_stdout = 1; - const int gunzip_force = 2; - const int gunzip_test = 4; - - int flags = 0; - int opt = 0; - int delete_old_file = FALSE; - - /* if called as zcat */ - if (strcmp(applet_name, "zcat") == 0) - flags |= gunzip_to_stdout; - - while ((opt = getopt(argc, argv, "ctfhdq")) != -1) { - switch (opt) { - case 'c': - flags |= gunzip_to_stdout; - break; - case 'f': - flags |= gunzip_force; - break; - case 't': - flags |= gunzip_test; - break; - case 'd': /* Used to convert gzip to gunzip. */ - break; - case 'q': - error_msg("-q option not supported, ignored"); - break; - case 'h': - default: - show_usage(); /* exit's inside usage */ - } - } - - /* Set input filename and number */ - if (argv[optind] == NULL || strcmp(argv[optind], "-") == 0) { - flags |= gunzip_to_stdout; - } else { - if_name = strdup(argv[optind]); - /* Open input file */ - in_file = xfopen(if_name, "r"); - - /* set the buffer size */ - setvbuf(in_file, NULL, _IOFBF, 0x8000); - - /* Get the time stamp on the input file. */ - if (stat(if_name, &stat_buf) < 0) { - error_msg_and_die("Couldn't stat file %s", if_name); - } - } - - /* Check that the input is sane. */ - if (isatty(fileno(in_file)) && (flags & gunzip_force) == 0) - error_msg_and_die("compressed data not read from terminal. Use -f to force it."); - - /* Set output filename and number */ - if (flags & gunzip_test) { - out_file = xfopen("/dev/null", "w"); /* why does test use filenum 2 ? */ - } else if (flags & gunzip_to_stdout) { - out_file = stdout; - } else { - char *extension; - int length = strlen(if_name); - - delete_old_file = TRUE; - extension = strrchr(if_name, '.'); - if (extension && strcmp(extension, ".gz") == 0) { - length -= 3; - } else if (extension && strcmp(extension, ".tgz") == 0) { - length -= 4; - } else { - error_msg_and_die("Invalid extension"); - } - of_name = (char *) xcalloc(sizeof(char), length + 1); - strncpy(of_name, if_name, length); - - /* Open output file */ - out_file = xfopen(of_name, "w"); - - /* Set permissions on the file */ - chmod(of_name, stat_buf.st_mode); - } - - /* do the decompression, and cleanup */ - if (unzip(in_file, out_file) == 0) { - /* Success, remove .gz file */ - delete_file_name = if_name; - } else { - /* remove failed attempt */ - delete_file_name = of_name; - } - - fclose(out_file); - fclose(in_file); - - if (delete_old_file == TRUE) { - if (unlink(delete_file_name) < 0) { - error_msg_and_die("Couldnt remove %s", delete_file_name); - } - } - - free(of_name); - - return(EXIT_SUCCESS); -} |