[BusyBox] bunzip -c and bzcat - patches.
Thomas Lundquist
lists at zelow.no
Sun Nov 18 06:27:12 UTC 2001
Disregard the last mail about my troubles.
I found out I had the wrong alphabetical order in appets.h and
moved the bzcat one down and voila..
so, here is bzcat and the bunzip -c option, both unzips to
STDOUT.
patched against latest cvs (as of a few hours)
if anyone wants STDIN I guess I can try that too.
Thomas.
-------------- next part --------------
Index: include/applets.h
===================================================================
RCS file: /var/cvs/busybox/include/applets.h,v
retrieving revision 1.49
diff -u -r1.49 applets.h
--- include/applets.h 2001/11/02 11:39:45 1.49
+++ include/applets.h 2001/11/18 13:22:53
@@ -68,6 +68,9 @@
APPLET(bunzip2, bunzip2_main, _BB_DIR_USR_BIN)
#endif
APPLET_NOUSAGE("busybox", busybox_main, _BB_DIR_BIN)
+#ifdef CONFIG_BUNZIP2
+ APPLET(bzcat, bunzip2_main, _BB_DIR_USR_BIN)
+#endif
#ifdef CONFIG_CAT
APPLET(cat, cat_main, _BB_DIR_BIN)
#endif
-------------- next part --------------
Index: archival/bunzip2.c
===================================================================
RCS file: /var/cvs/busybox/archival/bunzip2.c,v
retrieving revision 1.2
diff -u -r1.2 bunzip2.c
--- archival/bunzip2.c 2001/11/12 16:57:15 1.2
+++ archival/bunzip2.c 2001/11/18 12:25:03
@@ -1,4 +1,5 @@
/* Modified for busybox by Glenn McGrath <bug1 at optushome.com.au> */
+/* Added support output to stdout by Thomas Lundquist <thomasez at zelow.no> */
/*--
This file is a part of bzip2 and/or libbzip2, a program and
library for lossless, block-sorting data compression.
@@ -56,6 +57,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
+#include <getopt.h>
#include <busybox.h>
//#define TRUE 1
@@ -2316,15 +2318,38 @@
int bunzip2_main(int argc, char **argv)
{
+ const int bunzip_to_stdout = 1;
+ int flags = 0;
+ int opt = 0;
+
FILE *src_stream;
FILE *dst_stream;
char *save_name;
char *save_name_ptr;
- if (argc != 2) {
+
+ /* if called as bzcat */
+ if (strcmp(applet_name, "bzcat") == 0)
+ flags |= bunzip_to_stdout;
+
+ while ((opt = getopt(argc, argv, "ch")) != -1) {
+ switch (opt) {
+ case 'c':
+ flags |= bunzip_to_stdout;
+ break;
+ case 'h':
+ default:
+ show_usage(); /* exit's inside usage */
+ }
+ }
+
+ save_name = xstrdup(argv[optind]);
+
+ if (save_name == NULL) {
show_usage();
}
- src_stream = xfopen(argv[1], "r");
- save_name = xstrdup(argv[1]);
+
+ src_stream = xfopen(argv[optind], "r");
+
save_name_ptr = strrchr(save_name, '.');
if (save_name_ptr == NULL) {
return(FALSE);
@@ -2333,7 +2358,12 @@
error_msg("Invalid extension, expected .bz2");
}
*save_name_ptr = '\0';
- dst_stream = xfopen(save_name, "w");
+
+ if (flags & bunzip_to_stdout) {
+ dst_stream = stdout;
+ } else {
+ dst_stream = xfopen(save_name, "w");
+ }
uncompressStream(src_stream, dst_stream);
return(TRUE);
-------------- next part --------------
Index: include/usage.h
===================================================================
RCS file: /var/cvs/busybox/include/usage.h,v
retrieving revision 1.71
diff -u -r1.71 usage.h
--- include/usage.h 2001/11/02 11:39:45 1.71
+++ include/usage.h 2001/11/18 12:25:49
@@ -52,10 +52,16 @@
"bar"
#define bunzip2_trivial_usage \
- "FILE"
+ "[-c] FILE"
#define bunzip2_full_usage \
"Uncompress FILE to current directory, stripping its .bz2 extension.\n"\
+ " -c output to stdout\n"\
" -k is assumed"
+
+#define bzcat_trivial_usage \
+ "FILE"
+#define bzcat_full_usage \
+ "Uncompress to stdout."
#define cat_trivial_usage \
"[FILE]..."
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