new port for xdelta

svn path=/head/; revision=9466

misc/xdelta/Makefile

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+# New ports collection makefile for:    xdelta
+# Version required:     0.14
+# Date created:         Sun May  4 21:40:06 CDT 1997
+# Whom:                 erich
+#
+# $Id: Makefile,v 1.12 1997/02/12 10:24:23 asami Exp $
+#
+
+DISTNAME=       xdelta-0.14
+
+CATEGORIES=     misc
+MASTER_SITES=   ftp://scam.xcf.berkeley.edu/pub/jmacd/
+GNU_CONFIGURE=	yup
+
+#BUILD_DEPENDS=	${PREFIX}/lib/libgdbm.a:${PORTSDIR}/databases/gdbm
+
+#
+# this seems to be necessary for libtool :(
+MAKE_ENV= CC=cc
+
+.include <bsd.port.mk>

misc/xdelta/distinfo

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+MD5 (xdelta-0.14.tar.gz) = 6dcb37139f7c511b8f8d3899644cf0a6

misc/xdelta/pkg-comment

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+a diff/patch utility for binary files

misc/xdelta/pkg-descr

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+From the README:
+  I propose this delta generator as a replacement for "diff" in applications
+  where the insert/delete delta is not required.  Since the copy/insert delta
+  is easier to compute, it does not have to make the reduction in input size
+  by breaking the file into lines.  The delta generator works well on binary
+  files.
+
+  The next question is whether it is actually desirable to compute deltas
+  between binary files.  The answer is certainly yes, even though some binary
+  file formats will not have a great degree of similarity between versions
+  which were generated between minor modifications to their sources.  First, I
+  have evidence that some file formats (notably FrameMaker documents) work
+  very well.  Machine-dependant object files and executables don't work very
+  well, but it is still worth doing.  The reason it is still worthwhile is
+  that compression takes longer than finding these deltas, so any space
+  savings the delta generator produces it very likely to reduce the total
+  archival time.  Even if the delta generator saves no space, the total time
+  well end up less than twice the time of compression.  I will include some
+  measurements at the end of this writing.
+
+  Please send any comments, questions, thoughts, or interest to me,
+  jmacd@cs.berkeley.edu.
+
+Eric. <erich@FreeBSD.org>

misc/xdelta/pkg-plist

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+bin/xdelta
+include/xdelta.h
+lib/libxdelta.so.0.11
+lib/libxdelta.la
+lib/libxdelta.a