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authorEric Andersen1999-11-11 05:46:32 +0000
committerEric Andersen1999-11-11 05:46:32 +0000
commit0dfac6b9cec891b8d523f85d7989d772a1447828 (patch)
tree9bba884d702e0e2497ff990bc3ebce08e4d7a1a3 /archival/gzip.c
parentc296b54827d102bd020845da904773d861552788 (diff)
downloadbusybox-0dfac6b9cec891b8d523f85d7989d772a1447828.zip
busybox-0dfac6b9cec891b8d523f85d7989d772a1447828.tar.gz
Stuff
Diffstat (limited to 'archival/gzip.c')
-rw-r--r--archival/gzip.c91
1 files changed, 63 insertions, 28 deletions
diff --git a/archival/gzip.c b/archival/gzip.c
index c362706..500d6d7 100644
--- a/archival/gzip.c
+++ b/archival/gzip.c
@@ -7,9 +7,9 @@
#include "internal.h"
#ifdef BB_GZIP
-#ifndef BB_ZCAT
-#error you need zcat to have gzip support!
-#endif
+//#ifndef BB_ZCAT
+//#error you need zcat to have gzip support!
+//#endif
static const char gzip_usage[] =
"gzip [OPTION]... [FILE]...\n\n"
@@ -276,7 +276,7 @@ extern int save_orig_name; /* set if original name must be saved */
#define WARN(msg) {if (!quiet) fprintf msg ; \
if (exit_code == OK) exit_code = WARNING;}
-local void do_exit(int exitcode);
+local void do_exit(int exitcode) __attribute__ ((noreturn));
/* in zip.c: */
extern int zip OF((int in, int out));
@@ -1762,9 +1762,6 @@ unsigned outcnt; /* bytes in output buffer */
/* local functions */
-local void treat_stdin OF((void));
-static int (*work) OF((int infile, int outfile)) = zip; /* function to call */
-
#define strequ(s1, s2) (strcmp((s1),(s2)) == 0)
/* ======================================================================== */
@@ -1774,6 +1771,9 @@ static int (*work) OF((int infile, int outfile)) = zip; /* function to call */
int gzip_main(int argc, char ** argv)
{
+ int inFileNum;
+ int outFileNum;
+
/* Parse any options */
while (--argc > 0 && **(++argv) == '-') {
while (*(++(*argv))) {
@@ -1817,32 +1817,67 @@ int gzip_main(int argc, char ** argv)
ALLOC(ush, tab_prefix1, 1L<<(BITS-1));
#endif
- /* And get to work */
- treat_stdin();
- do_exit(exit_code);
- return exit_code; /* just to avoid lint warning */
-}
+ if (tostdout==1) {
+ /* And get to work */
+ SET_BINARY_MODE(fileno(stdout));
+ strcpy(ifname, "stdin");
+ strcpy(ofname, "stdout");
+ inFileNum=fileno(stdin);
+ outFileNum=fileno(stdout);
-/* ========================================================================
- * Compress or decompress stdin
- */
-local void treat_stdin()
-{
- SET_BINARY_MODE(fileno(stdout));
- strcpy(ifname, "stdin");
- strcpy(ofname, "stdout");
+ /* Get the time stamp on the input file. */
+ time_stamp = 0; /* time unknown by default */
- /* Get the time stamp on the input file. */
- time_stamp = 0; /* time unknown by default */
+ ifile_size = -1L; /* convention for unknown size */
- ifile_size = -1L; /* convention for unknown size */
+ clear_bufs(); /* clear input and output buffers */
+ part_nb = 0;
- clear_bufs(); /* clear input and output buffers */
- part_nb = 0;
+ /* Actually do the compression/decompression. */
+ zip(inFileNum, outFileNum);
- /* Actually do the compression/decompression. Loop over zipped members.
- */
- if ((*work)(fileno(stdin), fileno(stdout)) != OK) return;
+ } else {
+ int result;
+ struct stat statBuf;
+
+ /* And get to work */
+ if (*argv=='\0')
+ usage(gzip_usage);
+ strncpy(ifname, *argv, MAX_PATH_LEN);
+ strncpy(ofname, *argv, MAX_PATH_LEN-4);
+ strcat(ofname, ".gz");
+
+ inFileNum=open( ifname, O_RDONLY);
+ if (inFileNum < 0) {
+ perror(ifname);
+ do_exit(WARNING);
+ }
+ result = stat(ifname, &statBuf);
+ if (result < 0) {
+ perror(ifname);
+ do_exit(WARNING);
+ }
+
+ outFileNum=open( ofname, O_RDONLY);
+ if (outFileNum < 0) {
+ perror(ofname);
+ do_exit(WARNING);
+ }
+ SET_BINARY_MODE(outFileNum);
+
+ /* Get the time stamp on the input file. */
+ time_stamp = statBuf.st_ctime; /* time unknown by default */
+
+ ifile_size = statBuf.st_size; /* convention for unknown size */
+
+ clear_bufs(); /* clear input and output buffers */
+ part_nb = 0;
+
+ /* Actually do the compression/decompression. */
+ zip(inFileNum, outFileNum);
+ }
+
+ do_exit(exit_code);
}
/* ========================================================================