Make uncompress a seperate applet so it doesnt pull in all the gunzip code

9 files changed, 153 insertions, 9 deletions

diff --git a/archival/Makefile.in b/archival/Makefile.in
index c53171eea..226cde690 100644
--- a/archival/Makefile.in
+++ b/archival/Makefile.in
@@ -23,6 +23,7 @@ ARCHIVAL_DIR:=$(TOPDIR)archival/
 endif
 
 ARCHIVAL-y:=
+ARCHIVAL-$(CONFIG_APT_GET)	+=
 ARCHIVAL-$(CONFIG_AR)		+= ar.o
 ARCHIVAL-$(CONFIG_BUNZIP2)	+= bunzip2.o
 ARCHIVAL-$(CONFIG_CPIO)		+= cpio.o
@@ -32,6 +33,7 @@ ARCHIVAL-$(CONFIG_GUNZIP)	+= gunzip.o
 ARCHIVAL-$(CONFIG_GZIP)		+= gzip.o
 ARCHIVAL-$(CONFIG_RPM2CPIO)	+= rpm2cpio.o
 ARCHIVAL-$(CONFIG_TAR)		+= tar.o
+ARCHIVAL-$(CONFIG_UNCOMPRESS)	+= uncompress.o
 ARCHIVAL-$(CONFIG_UNZIP)	+= unzip.o
 
 libraries-y+=$(ARCHIVAL_DIR)$(ARCHIVAL_AR)
diff --git a/archival/config.in b/archival/config.in
index dd97909f9..689561b8e 100644
--- a/archival/config.in
+++ b/archival/config.in
@@ -18,6 +18,9 @@ if [ "$CONFIG_DPKG_DEB" = "y" ] ; then
     bool '  -x support only'	CONFIG_FEATURE_DPKG_DEB_EXTRACT_ONLY
 fi
 bool 'gunzip'	    CONFIG_GUNZIP
+if [ "$CONFIG_GUNZIP" = "y" ]; then
+    bool '  Uncompress support'		CONFIG_FEATURE_GUNZIP_UNCOMPRESS
+fi
 bool 'gzip'	    CONFIG_GZIP
 bool 'rpm2cpio'     CONFIG_RPM2CPIO
 bool 'tar'	    CONFIG_TAR
@@ -31,5 +34,6 @@ fi
 if [ "$CONFIG_CPIO" = "y" -o "$CONFIG_TAR" = "y" ] ; then
     bool '  Enable tape drive support' CONFIG_FEATURE_UNARCHIVE_TAPE
 fi
+bool 'uncompress'   CONFIG_UNCOMPRESS
 bool 'unzip'	    CONFIG_UNZIP
 endmenu
diff --git a/archival/gunzip.c b/archival/gunzip.c
index b6f3e08ea..e9963a8d2 100644
--- a/archival/gunzip.c
+++ b/archival/gunzip.c
@@ -143,7 +143,7 @@ extern int gunzip_main(int argc, char **argv)
 			new_path = xstrdup(old_path);
 
 			extension = strrchr(new_path, '.');
-#ifdef CONFIG_FEATURE_UNCOMPRESS
+#ifdef CONFIG_FEATURE_GUNZIP_UNCOMPRESS
 			if (extension && (strcmp(extension, ".Z") == 0)) {
 				*extension = '\0';
 			} else
@@ -172,7 +172,7 @@ extern int gunzip_main(int argc, char **argv)
 			unsigned char magic2;
 			
 			magic2 = xread_char(src_fd);
-#ifdef CONFIG_FEATURE_UNCOMPRESS
+#ifdef CONFIG_FEATURE_GUNZIP_UNCOMPRESS
 			if (magic2 == 0x9d) {
 				status = uncompress(src_fd, dst_fd);
 			} else 
diff --git a/archival/libunarchive/decompress_uncompress.c b/archival/libunarchive/decompress_uncompress.c
index 02835cfce..302201fc0 100644
--- a/archival/libunarchive/decompress_uncompress.c
+++ b/archival/libunarchive/decompress_uncompress.c
@@ -1,7 +1,7 @@
 #include "config.h"
 #include "libbb.h"
 
-#ifdef CONFIG_FEATURE_UNCOMPRESS
+#ifdef CONFIG_UNCOMPRESS || defined CONFIG_FEATURE_GUNZIP_UNCOMPRESS
 
 /* uncompress for busybox -- (c) 2002 Robert Griebl
  *
diff --git a/archival/libunarchive/uncompress.c b/archival/libunarchive/uncompress.c
index 02835cfce..302201fc0 100644
--- a/archival/libunarchive/uncompress.c
+++ b/archival/libunarchive/uncompress.c
@@ -1,7 +1,7 @@
 #include "config.h"
 #include "libbb.h"
 
-#ifdef CONFIG_FEATURE_UNCOMPRESS
+#ifdef CONFIG_UNCOMPRESS || defined CONFIG_FEATURE_GUNZIP_UNCOMPRESS
 
 /* uncompress for busybox -- (c) 2002 Robert Griebl
  *
diff --git a/archival/uncompress.c b/archival/uncompress.c
new file mode 100644
index 000000000..877bcc784
--- /dev/null
+++ b/archival/uncompress.c
@@ -0,0 +1,133 @@
+/* vi: set sw=4 ts=4: */
+/*
+ *	Uncompress applet for busybox (c) 2002 Glenn McGrath
+ *
+ *  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.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "libbb.h"
+#include "unarchive.h"
+
+int uncompress_main(int argc, char **argv)
+{
+	const char gunzip_to_stdout = 1;
+	const char gunzip_force = 2;
+	char status = EXIT_SUCCESS;
+	char flags = 0;
+	int opt;
+
+	while ((opt = getopt(argc, argv, "cfh")) != -1) {
+		switch (opt) {
+		case 'c':
+			flags |= gunzip_to_stdout;
+			break;
+		case 'f':
+			flags |= gunzip_force;
+			break;
+		default:
+			show_usage();	/* exit's inside usage */
+		}
+	}
+
+	do {
+		struct stat stat_buf;
+		const char *old_path = argv[optind];
+		const char *delete_path = NULL;
+		char *new_path = NULL;
+		int src_fd;
+		int dst_fd;
+
+		optind++;
+
+		if (old_path == NULL || strcmp(old_path, "-") == 0) {
+			src_fd = fileno(stdin);
+			flags |= gunzip_to_stdout;
+		} else {
+			src_fd = xopen(old_path, O_RDONLY);
+
+			/* Get the time stamp on the input file. */
+			if (stat(old_path, &stat_buf) < 0) {
+				error_msg_and_die("Couldn't stat file %s", old_path);
+			}
+		}
+
+		/* Check that the input is sane.  */
+		if (isatty(src_fd) && ((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_to_stdout) {
+			dst_fd = fileno(stdout);
+		} else {
+			char *extension;
+
+			new_path = xstrdup(old_path);
+
+			extension = strrchr(new_path, '.');
+			if (!extension || (strcmp(extension, ".Z") != 0)) {
+				error_msg_and_die("Invalid extension");
+			}
+			*extension = '\0';
+
+			/* Open output file */
+			dst_fd = xopen(new_path, O_WRONLY | O_CREAT);
+
+			/* Set permissions on the file */
+			chmod(new_path, stat_buf.st_mode);
+
+			/* If unzip succeeds remove the old file */
+			delete_path = old_path;
+		}
+
+		/* do the decompression, and cleanup */
+		if ((xread_char(src_fd) == 0x1f) && (xread_char(src_fd) == 0x9d)) {
+			status = uncompress(src_fd, dst_fd);
+		} else {
+			error_msg_and_die("Invalid magic");
+		}
+
+		if ((status != EXIT_SUCCESS) && (new_path)) {
+			/* Unzip failed, remove new path instead of old path */
+			delete_path = new_path;
+		}
+
+		if (dst_fd != fileno(stdout)) {
+			close(dst_fd);
+		}
+		if (src_fd != fileno(stdin)) {
+			close(src_fd);
+		}
+
+		/* delete_path will be NULL if in test mode or from stdin */
+		if (delete_path && (unlink(delete_path) == -1)) {
+			error_msg_and_die("Couldn't remove %s", delete_path);
+		}
+
+		free(new_path);
+
+	} while (optind < argc);
+
+	return status;
+}
diff --git a/include/applets.h b/include/applets.h
index 836ed9956..1660b11c5 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -515,10 +515,8 @@
 #ifdef CONFIG_UNAME
 	APPLET(uname, uname_main, _BB_DIR_BIN, _BB_SUID_NEVER)
 #endif
-#ifdef CONFIG_GUNZIP	
-# ifdef CONFIG_FEATURE_UNCOMPRESS
-	APPLET_ODDNAME("uncompress", gunzip_main, _BB_DIR_BIN, _BB_SUID_NEVER, gunzip)
-# endif
+#ifdef CONFIG_UNCOMPRESS
+	APPLET(uncompress, uncompress_main, _BB_DIR_BIN, _BB_SUID_NEVER)
 #endif
 #ifdef CONFIG_UNIQ
 	APPLET(uniq, uniq_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
diff --git a/include/usage.h b/include/usage.h
index fb126a007..8ea8c5a92 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -2032,6 +2032,14 @@
 	"$ uname -a\n" \
 	"Linux debian 2.2.15pre13 #5 Tue Mar 14 16:03:50 MST 2000 i686 unknown\n" 
 
+#define uncompress_trivial_usage \
+	"[-c] [-f] [ name ... ]"
+#define uncompress_full_usage \
+	"Uncompress .Z file[s]\n" \
+	"Options:\n" \
+	"\t-c\textract to stdout\n" \
+	"\t-f\tforce overwrite an existing file\n"
+	
 #define uniq_trivial_usage \
 	"[OPTION]... [INPUT [OUTPUT]]"
 #define uniq_full_usage \
diff --git a/sysdeps/linux/config.in b/sysdeps/linux/config.in
index c1860556d..ca7d97d4b 100644
--- a/sysdeps/linux/config.in
+++ b/sysdeps/linux/config.in
@@ -14,7 +14,6 @@ bool 'Show verbose applet usage messages'				CONFIG_FEATURE_VERBOSE_USAGE
 bool 'Support --install [-s] to install applet links at runtime' 	CONFIG_FEATURE_INSTALLER
 bool 'Enable locale support (system needs locale for this to work)'	CONFIG_LOCALE_SUPPORT
 bool 'Support for devfs'						CONFIG_FEATURE_DEVFS
-bool 'Support compress format (.Z) in unzip operations'  		CONFIG_FEATURE_UNCOMPRESS 
 bool 'Clean up all memory before exiting (usually not needed)'		CONFIG_FEATURE_CLEAN_UP
 bool 'Support for SUID/SGID handling'  					CONFIG_FEATURE_SUID
 if [ "$CONFIG_FEATURE_SUID" = "y" ]; then