#! /bin/bash
#                               -*- Mode: Sh -*- 
# cvs-upgrade --- 
# Author           : Manoj Srivastava ( srivasta@tiamat.datasync.com ) 
# Created On       : Fri Feb 20 15:17:09 1998
# Created On Node  : tiamat.datasync.com
# Last Modified By : Manoj Srivastava
# Last Modified On : Wed Apr  1 15:30:24 1998
# Last Machine Used: tiamat.datasync.com
# Update Count     : 78
# Status           : Unknown, Use with caution!
# HISTORY          : 
# Description      : 
# 
# 

# Make sure we abort on error
set -e

progname="`basename \"$0\"`"
pversion='$Revision: 1.6 $'

setq() {
    # Variable Value Doc string
    if [ "x$2" = "x" ]; then
        echo >&2 "$progname: Unable to determine $3"
        exit 1;
    else
        if [ ! "x$Verbose" = "x" ]; then
            echo "$progname: $3 is $2";
        fi
        eval "$1=\"\$2\"";
    fi
}

withecho () {
        echo " $@" >&2
        "$@"
}

usageversion () {
        cat >&2 <<END
Usage: $progname  [options] <package name> <upstream version> <debian version>
Options: 
  -h           print this message
  -M<module>   CVS module name
  -R<root dir> Root directory.
  -W<work dir> Working directory.    
  -d<digit>    Set Debug Level
  -n           "Dry-run" mode - No action taken, only print commands.
  -v           make the command verbose
  -x<prefix>   CVS default module prefix.
 
 Files are unpacked in here while being upgraded. The new upstream
 sources are expected in the file
 <workdir>/<package name>/<package name>_<upstream version>.orig.tar.gz)
 and should unpack into a subdir.

Note that the current behaviour of cvs-upgrade is to ignore files that
match the default list of file name patterns to be ignored (this is
built into cvs); and that any .cvsignore files in the upstream sources
shall be honoured.

END
}

# The defaults
docmd='YES'
action='withecho'
tmpdir="temp-$progname"


DEBUG=0
VERBOSE=0
# parse Command line
while [ $# != 0 ]; do
    value="`echo x\"$1\" | sed -e 's/^x-.//'`"
    case "$1" in
        -h)  usageversion; exit 0          ;;
        -M*) opt_cvsmodule="$value"        ;;
        -R*) opt_rootdir="$value"          ;;
        -W*) opt_workdir="$value"          ;;
	-n)  action='echo';docmd='NO'      ;;
	-v)  VERBOSE=1                     ;;
	-d*) opt_DEBUG="$value"            ;;
	-x*) opt_prefix="$value"           ;;
	-*) echo >&2 "Unknown option $1."
	    usageversion; exit 1           ;;
	*)  break                          ;;
    esac
    shift
done

# We need at lease two arguments
if [ $# -lt 2 ]; then
    echo >&2 " Require package name and upstream version"
    usageversion; 
    exit 1;
fi

package=$1
shift
upstream_version=$1
cvs_upstream_tag=`echo "upstream_version_$upstream_version" | tr . _ `
shift


if [ $# != 0 ]; then
    debian_version=$1
    cvstag=`echo "debian_version_${upstream_version}-$debian_version" | tr . _ `
else
    debian_version=""
    cvstag="debian_version_${upstream_tag}"
fi

CVS_QUIET="-Q"
TAR_QUIET=""

if [ $VERBOSE -gt 0 ]; then
    echo " *** Initializing ... ***"
fi

if [ "X$CVSROOT" = "X" ]; then
    echo "You should have set the CVSROOT env variable."  1>&2
    usageversion; 
    exit 1
fi

# get the package name
rootdir='/usr/local/src/Packages'

# Load site defaults and over rides.
if [ -f /etc/cvsdeb.conf ]; then
    . /etc/cvsdeb.conf
fi

# Load user defaults and over rides.
if [ -f ~/.cvsdeb.conf ]; then
    . ~/.cvsdeb.conf
fi

# If asked to debug on command line, that's what we get
if [ ! "x$opt_DEBUG" = "x" ]; then
    DEBUG="$opt_DEBUG"
fi

if [ "$DEBUG" -gt 0 ]; then
    CVS_QUIET=""
    TAR_QUIET="vv"
fi

# Command line, env variable, config file, or default
if [ ! "x$opt_rootdir" = "x" ]; then
    rootdir="$opt_rootdir"
elif [ ! "x$CVSDEB_ROOTDIR" = "x" ]; then
    rootdir="$CVSDEB_ROOTDIR"
elif [ ! "x$conf_rootdir" = "x" ]; then
    rootdir="$conf_rootdir"
fi

# Command line, env variable, config file, or default
if [ ! "x$opt_workdir" = "x" ]; then
    workdir="$opt_workdir"
elif [ ! "x$CVSDEB_WORKDIR" = "x" ]; then
    workdir="$CVSDEB_WORKDIR"
elif [ ! "x$conf_workdir" = "x" ]; then
    workdir="$conf_workdir"
else
    workdir="$rootdir/$package"
fi

# Command line, env variable, config file, or default
if [ ! "x$opt_prefix" = "x" ]; then
    prefix="$opt_prefix"
elif [ ! "x$CVSDEB_PREFIX" = "x" ]; then
    prefix="$CVSDEB_PREFIX"
elif [ ! "x$conf_prefix" = "x" ]; then
    prefix="$conf_prefix"
else
    prefix=""
fi

# put a slash at the end of the prefix
if [ "X$prefix" != "X" ]; then
    prefix="$prefix/";
    prefix=`echo $prefix | sed 's://:/:g'`;
fi

# Command line, env variable, or default
if [ ! "x$opt_cvsmodule" = "x" ]; then
    cvsmodule="$opt_cvsmodule"
elif [ ! "x$CVSDEB_MODULE" = "x" ]; then
    cvsmodule="$CVSDEB_MODULE"
else
    cvsmodule="${prefix}$package"
fi

# No user defined changes here
pkgdir="$workdir/$package-$upstream_version"
orig_tarfile="$workdir/${package}_${upstream_version}.orig.tar.gz"

if [ ! -r $orig_tarfile ]; then
    echo >&2 "I could not find the expected file $orig_tarfile"
    echo >&2 "I parsed the package name=($package), version=${upstream_version}"
    if [ $debian_version ]; then
	echo >&2 "The debian revision seems to be  $debian_version"
    else
	echo >&2 "This seems to be a debian only package"
    fi
    echo >&2 "The working directory is $workdir"
    echo >&2 ""
    echo >&2 "Since something has gone wrong, I am aborting"
    exit 1
fi

if [ $VERBOSE -gt 0 ]; then
    echo ""
    echo " *** Preparing the working directory *** "
fi
if [ ! -d "$workdir" ]; then
    eval "$action mkdir -p $workdir"
fi
eval "$action cd $workdir"
eval "$action mkdir $tmpdir"
if [ "X$docmd" = "XYES" ]; then
    if [ ! -d "$tmpdir" ]; then
	echo >&2 "The working directory ($workdir) is not writable"
	exit 1
    fi
fi

if [ $VERBOSE -gt 0 ]; then
    echo ""
    echo " *** Unpacking the new sources *** "
fi
eval "$action cd $tmpdir"
eval "$action tar ${TAR_QUIET}zfx ../${package}_${upstream_version}.orig.tar.gz"
if [ "X$docmd" = "XYES" ]; then
    numdirs=`ls -1 | wc -l`
    if [ $numdirs -gt 1 ]; then
	echo >&2 "Source unpacked into ore than one dir"
	eval "cd .."
	eval "rm -rf $tmpdir"
	exit 1;
    fi
    eval "$action cd `ls -1`"
else
    echo "numdirs=\`ls -1 | wc -l\`"
    echo "if [ $numdirs gt 1 ]; then "
    echo "   echo >&2 Source unpacked into ore than one dir"
    echo "   cd ..; rm -rf $tmpdir"
    echo "   exit 1"
    echo "fi"
    echo "cd \`ls -1\`"
fi

# check for symbolic links in the upstream sources
if [ "X$docmd" = "XYES" ]; then
    symbolic_links=$(find . -type l -print)
    if [ "X$symbolic_links" != "X" ]; then
	echo >&2 "The upstream sources contain symbolic links."
	echo >&2 "CVS ignores symblic links, you have to handle link "
	echo >&2 "creation in the modules file (-e and -o args)"
	echo >&2 "Please hit return to continue."
	read ans
    fi
fi

# check for CVS dirs in the upstream sources
if [ "X$docmd" = "XYES" ]; then
    CVS_dirs=$(find . -type d -name CVS -print)
    if [ "X$CVS_dirs" != "X" ]; then
	echo >&2 "The upstream sources contain CVS directories."
	echo >&2 "This I can't handle. Please delete the following"
	echo >&2 "directories and try again."
	echo >&2 "$CVS_dirs"
	cd ..; rm -rf $tmpdir ;
	exit 1;
    fi
fi

if [ $VERBOSE -gt 0 ]; then
    echo ""
    echo " *** Importing the new sources *** "
fi
eval "$action cvs $CVS_QUIET import -ko -m\\\'Initial Import\\\' ${cvsmodule} source-dist ${cvs_upstream_tag}"
eval "$action cd ../.."
eval "$action rm -rf $tmpdir"

echo "                                                                      "
echo "##############  Done automated tasks   ##############                 "
echo "                                                                      "
echo "# If there was no conflict, We can just check out the main            "
echo "# branch. You can simply do the following manually:                   "
echo "                                                                      "
echo "       cvs co ${cvsmodule}                                            "
echo "                                                                      "
echo "# If there were conflicts, however, you would have been given         "
echo "# directives by the import command to do the following checkout       "
echo "# and resolve the conflicts before continuing                         " 
echo "                                                                      "
echo "       cvs co -jsource-dist:yesterday -jsource-dist:today ${cvsmodule}"
echo "                                                                      "
echo "# After that don't forget to commit and tag you newly created         "
echo "# revision as                                                         "
echo "                                                                      "
echo "       cd ${cvsmodule}                                                "
echo "       edit debian/changelog                                          "
echo "       cvs ci -m'New upstream source'                                 "
echo "       cvs $CVS_QUIET tag -F ${cvstag}                                "
echo "       cd ${workdir}                                                  "
echo "       rm -rf ${cvsmodule}                                            "

exit 0