#!/bin/sh

#

# Makeself version 2.1.x

#  by Stephane Peter <megastep@megastep.org>

#

# $Id: makeself.sh,v 1.64 2008/01/04 23:52:14 megastep Exp $

#

# Utility to create self-extracting tar.gz archives.

# The resulting archive is a file holding the tar.gz archive with

# a small Shell script stub that uncompresses the archive to a temporary

# directory and then executes a given script from withing that directory.

#

# Makeself home page: http://www.megastep.org/makeself/

#

# Version 2.0 is a rewrite of version 1.0 to make the code easier to read and maintain.

#

# Version history :

# - 1.0 : Initial public release

# - 1.1 : The archive can be passed parameters that will be passed on to

#         the embedded script, thanks to John C. Quillan

# - 1.2 : Package distribution, bzip2 compression, more command line options,

#         support for non-temporary archives. Ideas thanks to Francois Petitjean

# - 1.3 : More patches from Bjarni R. Einarsson and Francois Petitjean:

#         Support for no compression (--nocomp), script is no longer mandatory,

#         automatic launch in an xterm, optional verbose output, and -target 

#         archive option to indicate where to extract the files.

# - 1.4 : Improved UNIX compatibility (Francois Petitjean)

#         Automatic integrity checking, support of LSM files (Francois Petitjean)

# - 1.5 : Many bugfixes. Optionally disable xterm spawning.

# - 1.5.1 : More bugfixes, added archive options -list and -check.

# - 1.5.2 : Cosmetic changes to inform the user of what's going on with big 

#           archives (Quake III demo)

# - 1.5.3 : Check for validity of the DISPLAY variable before launching an xterm.

#           More verbosity in xterms and check for embedded command's return value.

#           Bugfix for Debian 2.0 systems that have a different "print" command.

# - 1.5.4 : Many bugfixes. Print out a message if the extraction failed.

# - 1.5.5 : More bugfixes. Added support for SETUP_NOCHECK environment variable to

#           bypass checksum verification of archives.

# - 1.6.0 : Compute MD5 checksums with the md5sum command (patch from Ryan Gordon)

# - 2.0   : Brand new rewrite, cleaner architecture, separated header and UNIX ports.

# - 2.0.1 : Added --copy

# - 2.1.0 : Allow multiple tarballs to be stored in one archive, and incremental updates.

#           Added --nochown for archives

#           Stopped doing redundant checksums when not necesary

# - 2.1.1 : Work around insane behavior from certain Linux distros with no 'uncompress' command

#           Cleaned up the code to handle error codes from compress. Simplified the extraction code.

# - 2.1.2 : Some bug fixes. Use head -n to avoid problems.

# - 2.1.3 : Bug fixes with command line when spawning terminals.

#           Added --tar for archives, allowing to give arbitrary arguments to tar on the contents of the archive.

#           Added --noexec to prevent execution of embedded scripts.

#           Added --nomd5 and --nocrc to avoid creating checksums in archives.

#           Added command used to create the archive in --info output.

#           Run the embedded script through eval.

# - 2.1.4 : Fixed --info output.

#           Generate random directory name when extracting files to . to avoid problems. (Jason Trent)

#           Better handling of errors with wrong permissions for the directory containing the files. (Jason Trent)

#           Avoid some race conditions (Ludwig Nussel)

#           Unset the $CDPATH variable to avoid problems if it is set. (Debian)

#           Better handling of dot files in the archive directory.

# - 2.1.5 : Made the md5sum detection consistent with the header code.

#           Check for the presence of the archive directory

#           Added --encrypt for symmetric encryption through gpg (Eric Windisch)

#           Added support for the digest command on Solaris 10 for MD5 checksums

#           Check for available disk space before extracting to the target directory (Andreas Schweitzer)

#           Allow extraction to run asynchronously (patch by Peter Hatch)

#           Use file descriptors internally to avoid error messages (patch by Kay Tiong Khoo)

#

# (C) 1998-2008 by Stéphane Peter <megastep@megastep.org>

#

# This software is released under the terms of the GNU GPL version 2 and above

# Please read the license at http://www.gnu.org/copyleft/gpl.html

#

MS_VERSION=2.1.5

MS_COMMAND="$0"

unset CDPATH

for f in "${1+"$@"}"; do

    MS_COMMAND="$MS_COMMAND \\\\

    \\\"$f\\\""

done

# Procedures

MS_Usage()

{

    echo "Usage: $0 [params] archive_dir file_name label [startup_script] [args]"

    echo "params can be one or more of the following :"

    echo "    --version | -v  : Print out Makeself version number and exit"

    echo "    --help | -h     : Print out this help message"

    echo "    --gzip          : Compress using gzip (default if detected)"

    echo "    --bzip2         : Compress using bzip2 instead of gzip"

    echo "    --compress      : Compress using the UNIX 'compress' command"

    echo "    --nocomp        : Do not compress the data"

    echo "    --notemp        : The archive will create archive_dir in the"

    echo "                      current directory and uncompress in ./archive_dir"

    echo "    --copy          : Upon extraction, the archive will first copy itself to"

    echo "                      a temporary directory"

    echo "    --append        : Append more files to an existing Makeself archive"

    echo "                      The label and startup scripts will then be ignored"

    echo "    --current       : Files will be extracted to the current directory."

    echo "                      Implies --notemp."

    echo "    --nomd5         : Don't calculate an MD5 for archive"

    echo "    --nocrc         : Don't calculate a CRC for archive"

    echo "    --header file   : Specify location of the header script"

    echo "    --follow        : Follow the symlinks in the archive"

    echo "    --nox11         : Disable automatic spawn of a xterm"

    echo "    --nowait        : Do not wait for user input after executing embedded"

    echo "                      program from an xterm"

    echo "    --lsm file      : LSM file describing the package"

    echo

    echo "Do not forget to give a fully qualified startup script name"

    echo "(i.e. with a ./ prefix if inside the archive)."

    exit 1

}

# Default settings

if type gzip 2>&1 > /dev/null; then

    COMPRESS=gzip

else

    COMPRESS=Unix

fi

KEEP=n

CURRENT=n

NOX11=n

APPEND=n

COPY=none

TAR_ARGS=cvf

HEADER=`dirname $0`/makeself-header.sh

# LSM file stuff

LSM_CMD="echo No LSM. >> \"\$archname\""

while true

do

    case "$1" in

    --version | -v)

	echo Makeself version $MS_VERSION

	exit 0

	;;

    --bzip2)

	COMPRESS=bzip2

	shift

	;;

    --gzip)

	COMPRESS=gzip

	shift

	;;

    --compress)

	COMPRESS=Unix

	shift

	;;

    --encrypt)

	COMPRESS=gpg

	shift

	;;

    --nocomp)

	COMPRESS=none

	shift

	;;

    --notemp)

	KEEP=y

	shift

	;;

    --copy)

	COPY=copy

	shift

	;;

    --current)

	CURRENT=y

	KEEP=y

	shift

	;;

    --header)

	HEADER="$2"

	shift 2

	;;

    --follow)

	TAR_ARGS=cvfh

	shift

	;;

    --nox11)

	NOX11=y

	shift

	;;

    --nowait)

	shift

	;;

    --nomd5)

	NOMD5=y

	shift

	;;

    --nocrc)

	NOCRC=y

	shift

	;;

    --append)

	APPEND=y

	shift

	;;

    --lsm)

	LSM_CMD="cat \"$2\" >> \"\$archname\""

	shift 2

	;;

    -h | --help)

	MS_Usage

	;;

    -*)

	echo Unrecognized flag : "$1"

	MS_Usage

	;;

    *)

	break

	;;

    esac

done

if test $# -lt 1; then

	MS_Usage

else

	if test -d "$1"; then

		archdir="$1"

	else

		echo "Directory $1 does not exist."

		exit 1

	fi

fi

archname="$2"

if test "$APPEND" = y; then

    if test $# -lt 2; then

	MS_Usage

    fi

    # Gather the info from the original archive

    OLDENV=`sh "$archname" --dumpconf`

    if test $? -ne 0; then

	echo "Unable to update archive: $archname" >&2

	exit 1

    else

	eval "$OLDENV"

    fi

else

    if test "$KEEP" = n -a $# = 3; then

	echo "ERROR: Making a temporary archive with no embedded command does not make sense!" >&2

	echo

	MS_Usage

    fi

    # We don't really want to create an absolute directory...

    if test "$CURRENT" = y; then

	archdirname="."

    else

	archdirname=`basename "$1"`

    fi

    if test $# -lt 3; then

	MS_Usage

    fi

    LABEL="$3"

    SCRIPT="$4"

    test x$SCRIPT = x || shift 1

    shift 3

    SCRIPTARGS="$*"

fi

if test "$KEEP" = n -a "$CURRENT" = y; then

    echo "ERROR: It is A VERY DANGEROUS IDEA to try to combine --notemp and --current." >&2

    exit 1

fi

case $COMPRESS in

gzip)

    GZIP_CMD="gzip -c9"

    GUNZIP_CMD="gzip -cd"

    ;;

bzip2)

    GZIP_CMD="bzip2 -9"

    GUNZIP_CMD="bzip2 -d"

    ;;

gpg)

    GZIP_CMD="gpg -ac -z9"

    GUNZIP_CMD="gpg -d"

    ;;

Unix)

    GZIP_CMD="compress -cf"

    GUNZIP_CMD="exec 2>&-; uncompress -c || test \\\$? -eq 2 || gzip -cd"

    ;;

none)

    GZIP_CMD="cat"

    GUNZIP_CMD="cat"

    ;;

esac

tmpfile="${TMPDIR:=/tmp}/mkself$$"

if test -f $HEADER; then

	oldarchname="$archname"

	archname="$tmpfile"

	# Generate a fake header to count its lines

	SKIP=0

    . $HEADER

    SKIP=`cat "$tmpfile" |wc -l`

	# Get rid of any spaces

	SKIP=`expr $SKIP`

	rm -f "$tmpfile"

    echo Header is $SKIP lines long >&2

	archname="$oldarchname"

else

    echo "Unable to open header file: $HEADER" >&2

    exit 1

fi

echo

if test "$APPEND" = n; then

    if test -f "$archname"; then

		echo "WARNING: Overwriting existing file: $archname" >&2

    fi

fi

USIZE=`du -ks $archdir | cut -f1`

DATE=`LC_ALL=C date`

if test "." = "$archdirname"; then

	if test "$KEEP" = n; then

		archdirname="makeself-$$-`date +%Y%m%d%H%M%S`"

	fi

fi

test -d "$archdir" || { echo "Error: $archdir does not exist."; rm -f "$tmpfile"; exit 1; }

echo About to compress $USIZE KB of data...

echo Adding files to archive named \"$archname\"...

exec 3<> "$tmpfile"

(cd "$archdir" && ( tar $TAR_ARGS - . | eval "$GZIP_CMD" >&3 ) ) || { echo Aborting: Archive directory not found or temporary file: "$tmpfile" could not be created.; exec 3>&-; rm -f "$tmpfile"; exit 1; }

exec 3>&- # try to close the archive

fsize=`cat "$tmpfile" | wc -c | tr -d " "`

# Compute the checksums

md5sum=00000000000000000000000000000000

crcsum=0000000000

if test "$NOCRC" = y; then

	echo "skipping crc at user request"

else

	crcsum=`cat "$tmpfile" | CMD_ENV=xpg4 cksum | sed -e 's/ /Z/' -e 's/	/Z/' | cut -dZ -f1`

	echo "CRC: $crcsum"

fi

if test "$NOMD5" = y; then

	echo "skipping md5sum at user request"

else

	# Try to locate a MD5 binary

	OLD_PATH=$PATH

	PATH=${GUESS_MD5_PATH:-"$OLD_PATH:/bin:/usr/bin:/sbin:/usr/local/ssl/bin:/usr/local/bin:/opt/openssl/bin"}

	MD5_ARG=""

	MD5_PATH=`exec <&- 2>&-; which md5sum || type md5sum`

	test -x $MD5_PATH || MD5_PATH=`exec <&- 2>&-; which md5 || type md5`

	test -x $MD5_PATH || MD5_PATH=`exec <&- 2>&-; which digest || type digest`

	PATH=$OLD_PATH

	if test `basename $MD5_PATH` = digest; then

		MD5_ARG="-a md5"

	fi

	if test -x "$MD5_PATH"; then

		md5sum=`cat "$tmpfile" | eval "$MD5_PATH $MD5_ARG" | cut -b-32`;

		echo "MD5: $md5sum"

	else

		echo "MD5: none, MD5 command not found"

	fi

fi

if test "$APPEND" = y; then

    mv "$archname" "$archname".bak || exit

    # Prepare entry for new archive

    filesizes="$filesizes $fsize"

    CRCsum="$CRCsum $crcsum"

    MD5sum="$MD5sum $md5sum"

    USIZE=`expr $USIZE + $OLDUSIZE`

    # Generate the header

    . $HEADER

    # Append the original data

    tail -n +$OLDSKIP "$archname".bak >> "$archname"

    # Append the new data

    cat "$tmpfile" >> "$archname"

    chmod +x "$archname"

    rm -f "$archname".bak

    echo Self-extractible archive \"$archname\" successfully updated.

else

    filesizes="$fsize"

    CRCsum="$crcsum"

    MD5sum="$md5sum"

    # Generate the header

    . $HEADER

    # Append the compressed tar data after the stub

    echo

    cat "$tmpfile" >> "$archname"

    chmod +x "$archname"

    echo Self-extractible archive \"$archname\" successfully created.

fi

rm -f "$tmpfile"