*/
#include "internal.h"
+
static const char gunzip_usage[] =
- "gunzip [OPTION]... FILE\n\n"
- "Uncompress FILE (or standard input if FILE is '-').\n\n"
+ "gunzip [OPTION]... FILE\n"
+#ifndef BB_FEATURE_TRIVIAL_HELP
+ "\nUncompress FILE (or standard input if FILE is '-').\n\n"
"Options:\n"
"\t-c\tWrite output to standard output\n"
- "\t-t\tTest compressed file integrity\n";
+ "\t-t\tTest compressed file integrity\n"
+#endif
+ ;
/* These defines are very important for BusyBox. Without these,
#define SMALL_MEM
#define DYN_ALLOC
-#define bb_need_name_too_long
#define BB_DECLARE_EXTERN
+#define bb_need_memory_exhausted
+#define bb_need_name_too_long
#include "messages.c"
#include <signal.h>
#include <sys/stat.h>
#include <errno.h>
-#include <sys/param.h> /* for PATH_MAX */
/* #include "tailor.h" */
# define DECLARE(type, array, size) type * array
# define ALLOC(type, array, size) { \
array = (type*)calloc((size_t)(((size)+1L)/2), 2*sizeof(type)); \
- if (array == NULL) errorMsg("insufficient memory"); \
+ if (array == NULL) errorMsg(memory_exhausted, "gunzip"); \
}
# define FREE(array) {if (array != NULL) free(array), array=NULL;}
#else
unsigned bi_reverse (unsigned value, int length);
void bi_windup (void);
void copy_block (char *buf, unsigned len, int header);
-extern int (*read_buf) (char *buf, unsigned size);
/* in util.c: */
-extern int copy (int in, int out);
extern ulg updcrc (uch * s, unsigned n);
extern void clear_bufs (void);
-extern int fill_inbuf (int eof_ok);
+static int fill_inbuf (int eof_ok);
extern void flush_outbuf (void);
-extern void flush_window (void);
+static void flush_window (void);
extern void write_buf (int fd, void * buf, unsigned cnt);
#ifndef __linux__
-extern char *basename (char *fname);
+static char *basename (char *fname);
#endif /* not __linux__ */
-extern void read_error (void);
-extern void write_error (void);
+void read_error_msg (void);
+void write_error_msg (void);
/* in inflate.c */
-extern int inflate (void);
+static int inflate (void);
/* #include "lzw.h" */
# undef LZW
#endif
-/* #include "getopt.h" */
-
-/* Declarations for getopt.
- Copyright (C) 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
-
- 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#ifndef _GETOPT_H
-#define _GETOPT_H 1
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-/* For communication from `getopt' to the caller.
- When `getopt' finds an option that takes an argument,
- the argument value is returned here.
- Also, when `ordering' is RETURN_IN_ORDER,
- each non-option ARGV-element is returned here. */
- extern char *optarg;
-
-/* Index in ARGV of the next element to be scanned.
- This is used for communication to and from the caller
- and for communication between successive calls to `getopt'.
-
- On entry to `getopt', zero means this is the first call; initialize.
-
- When `getopt' returns EOF, this is the index of the first of the
- non-option elements that the caller should itself scan.
-
- Otherwise, `optind' communicates from one call to the next
- how much of ARGV has been scanned so far. */
-
- extern int optind;
-
-/* Callers store zero here to inhibit the error message `getopt' prints
- for unrecognized options. */
-
- extern int opterr;
-
-/* Set to an option character which was unrecognized. */
-
- extern int optopt;
-
-/* Describe the long-named options requested by the application.
- The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
- of `struct option' terminated by an element containing a name which is
- zero.
-
- The field `has_arg' is:
- no_argument (or 0) if the option does not take an argument,
- required_argument (or 1) if the option requires an argument,
- optional_argument (or 2) if the option takes an optional argument.
-
- If the field `flag' is not NULL, it points to a variable that is set
- to the value given in the field `val' when the option is found, but
- left unchanged if the option is not found.
-
- To have a long-named option do something other than set an `int' to
- a compiled-in constant, such as set a value from `optarg', set the
- option's `flag' field to zero and its `val' field to a nonzero
- value (the equivalent single-letter option character, if there is
- one). For long options that have a zero `flag' field, `getopt'
- returns the contents of the `val' field. */
-
- struct option {
-#if __STDC__
- const char *name;
-#else
- char *name;
-#endif
- /* has_arg can't be an enum because some compilers complain about
- type mismatches in all the code that assumes it is an int. */
- int has_arg;
- int *flag;
- int val;
- };
-
-/* Names for the values of the `has_arg' field of `struct option'. */
-
-#define no_argument 0
-#define required_argument 1
-#define optional_argument 2
-
-#if __STDC__ || defined(PROTO)
-#if defined(__GNU_LIBRARY__)
-/* Many other libraries have conflicting prototypes for getopt, with
- differences in the consts, in stdlib.h. To avoid compilation
- errors, only prototype getopt for the GNU C library. */
- extern int getopt(int argc, char *const *argv, const char *shortopts);
-#endif /* not __GNU_LIBRARY__ */
- extern int getopt_long(int argc, char *const *argv,
- const char *shortopts,
- const struct option *longopts, int *longind);
- extern int getopt_long_only(int argc, char *const *argv,
- const char *shortopts,
- const struct option *longopts,
- int *longind);
-
-/* Internal only. Users should not call this directly. */
- extern int _getopt_internal(int argc, char *const *argv,
- const char *shortopts,
- const struct option *longopts,
- int *longind, int long_only);
-#else /* not __STDC__ */
- extern int getopt();
- extern int getopt_long();
- extern int getopt_long_only();
-
- extern int _getopt_internal();
-#endif /* not __STDC__ */
-
-#ifdef __cplusplus
-}
-#endif
-#endif /* _GETOPT_H */
#include <time.h>
#include <fcntl.h>
#include <unistd.h>
#define RW_USER (S_IRUSR | S_IWUSR) /* creation mode for open() */
#ifndef MAX_PATH_LEN /* max pathname length */
-# ifdef PATH_MAX
-# define MAX_PATH_LEN PATH_MAX
+# ifdef BUFSIZ
+# define MAX_PATH_LEN BUFSIZ
# else
# define MAX_PATH_LEN 1024
# endif
char ifname[MAX_PATH_LEN + 1]; /* input file name */
char ofname[MAX_PATH_LEN + 1]; /* output file name */
- if (argc == 1)
- usage(gunzip_usage);
-
- if (strcmp(*argv, "zcat") == 0)
+ if (strcmp(*argv, "zcat") == 0) {
to_stdout = 1;
+ if (argc == 1) {
+ fromstdin = 1;
+ }
+ }
/* Parse any options */
while (--argc > 0 && **(++argv) == '-') {
exit(FALSE);
}
}
- exit(exit_code);
+ return(exit_code);
}
int res = inflate();
if (res == 3) {
- errorMsg("out of memory");
+ errorMsg(memory_exhausted, "gunzip");
} else if (res != 0) {
errorMsg("invalid compressed data--format violated");
}
/* ===========================================================================
* Clear input and output buffers
*/
-void clear_bufs()
+void clear_bufs(void)
{
outcnt = 0;
insize = inptr = 0;
if (insize == 0) {
if (eof_ok)
return EOF;
- read_error();
+ read_error_msg();
}
bytes_in += (ulg) insize;
inptr = 1;
while ((n = write(fd, buf, cnt)) != cnt) {
if (n == (unsigned) (-1)) {
- write_error();
+ write_error_msg();
}
cnt -= n;
buf = (void *) ((char *) buf + n);
/* ========================================================================
* Error handlers.
*/
-void read_error()
+void read_error_msg()
{
fprintf(stderr, "\n");
if (errno != 0) {
abort_gzip();
}
-void write_error()
+void write_error_msg()
{
fprintf(stderr, "\n");
perror("");
projects / oweals / busybox.git / blobdiff