add rpmoffset with lzma support

trunk/novell4gentoo/app-arch/rpm5offset/Manifest

@@ -0,0 +1,2 @@
+AUX rpmoffset.c 1964 RMD160 acea626f5080b7ea47863cf9e3bc2ab3b381c61e SHA1 5ec35b3d37773ca4a09443c6ea687c7d3a739f34 SHA256 e1e18d68009bd4541d6c65b43f45b58d720b9c87eba612d7616e244142f80dfe
+EBUILD rpm5offset-9.0.ebuild 628 RMD160 cf664dc26a5305e9d85b29ef89f9a1faf26bbae2 SHA1 c08ecbb217ffa829d134544c78fbbeb451510193 SHA256 5b9561a70c0dece76fb9e4f94690e8b8cf143dd98edf08d13938a922ce0eaef5

trunk/novell4gentoo/app-arch/rpm5offset/files/rpmoffset.c

@@ -0,0 +1,72 @@
+
+/* Find how deeply inside an .RPM the real data is */
+/* kept, and report the offset in bytes */
+
+/* Wouldn't it be a lot more sane if we could just untar these things? */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+/* These offsets keep getting bigger, so we're going to just bite a 2MB */
+/* chunk of RAM right away so that we have enough.  Yeah, horrible */
+/* quick and dirty implementation, but hey -- it gets the job done. */
+
+#define RPMBUFSIZ 3145728
+
+main()
+{
+	char *buff = malloc(RPMBUFSIZ),*eb,*p;
+	for (p = buff, eb = buff + read(0,buff,RPMBUFSIZ); p < eb; p++)
+	{
+
+		/* gzip format */
+		if (*p == '\037' && p[1] == '\213' && p[2] == '\010') 
+		{
+			printf("%ld\n",p - buff);
+			exit(0);
+		}
+
+		/* bzip2 format */
+		else if (*p == 'B' && p[1] == 'Z' && p[2] == 'h' )
+		{
+			printf("%ld\n",p - buff);
+			exit(0);
+		}
+
+		/* LZMA files; both LZMA_Alone and LZMA utils formats. The LZMA_Alone
+		* format is used by the LZMA_Alone tool from LZMA SDK. The LZMA utils
+		* format is the default format of LZMA utils 4.32.1 and later. */
+
+		/* LZMA utils format */
+		else if (*p == '\377' && p[1] == 'L' &&
+			 p[2] == 'Z' && p[3] == 'M' &&
+			 p[4] == 'A' && p[5] == '\000')
+		{
+			printf("%ld\n",p - buff);
+			exit(0);
+		}
+
+		/* The LZMA_Alone format has no magic bytes, thus we
+		* need to play a wizard. This can give false positives,
+		* thus the detection below should be removed when
+		* the newer LZMA utils format has got popular. */
+//		else if (*p == 0x5D && p[1] == 0x00 &&
+		else if (*p == '\135' &&
+			 p[5] == '\377' && p[6] == '\377' &&
+			 p[7] == '\377' && p[8] == '\377' &&
+			 p[9] == '\377' && p[10] == '\377' &&
+			 p[11] == '\377' && p[12] == '\377')
+
+/*			((p[10] == 0x00 && p[11] == 0x00 &&
+			  p[12] == 0x00) ||
+			 (p[5] == 0xFF && p[6] == 0xFF &&
+			  p[7] == 0xFF && p[8] == 0xFF &&
+			  p[9] == 0xFF && p[10] == 0xFF &&
+			  p[11] == 0xFF && p[12] == 0xFF)))
+*/		{
+			printf("%ld\n",p - buff);
+			exit(0);
+		}
+	}
+        exit(1);
+}

trunk/novell4gentoo/app-arch/rpm5offset/rpm5offset-9.0.ebuild

@@ -0,0 +1,26 @@
+# Copyright 1999-2008 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: $
+
+inherit toolchain-funcs
+
+DESCRIPTION="Find how deeply inside an .RPM the real data is"
+HOMEPAGE="http://www.slackware.com/config/packages.php"
+SRC_URI=""
+
+LICENSE="as-is"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~x86-fbsd"
+IUSE="userland_GNU"
+
+RDEPEND="app-arch/cpio
+	app-arch/lzma-utils"
+DEPEND="${DEPEND}"
+
+src_compile() {
+	"$(tc-getCC)" ${CFLAGS} ${LDFLAGS} ${FILESDIR}/rpmoffset.c -o rpm5offset || die
+}
+
+src_install() {
+	dobin rpm5offset || die
+}