#!/bin/sh
# generate Release files for a Debian mirror
# 2003-10, W. Borgert <debacle@debian.org>
# Released under the terms of the GNU General Public License
# 2012-12 Modified by Jorge Suárez de Lis <jorge.suarez@usc.es>

ORIGIN="Ubuntu"
LABEL="Ubuntu CITIUS"
SUITE="lucid"
CODENAME="precise"
DESC="Paquetes para Ubuntu CITIUS 12.04"
UNPACK=0
ARCHIVE=.
SIGN_RELEASE=0
SIGN_KEY=0

# long options not yet implemented
args=`getopt 'a:c:d:l:o:s:u' $*`
for o
    do case "$o" in
        -a | --arch*) ARCHIVE="$2"; shift; shift;;
        -c | --code*) CODENAME="$2"; shift; shift;;
        -d | --desc*) DESC="$2"; shift; shift;;
        -l | --label) LABEL="$2"; shift; shift;;
        -o | --orig*) ORIGIN="$2"; shift; shift;;
        -s | --suite) SUITE="$2"; shift; shift;;
        -u | --unpa*) UNPACK=1; shift;;
        --) shift; break;;
    esac
done

####

cd $ARCHIVE
DATE=`date -u`
if [ $UNPACK -eq 1 ]; then
    PACKAGGZ=`find . -follow -name Packages.gz -o -name Sources.gz`
    for p in $PACKAGGZ; do
        gunzip -c $p > `dirname $p`/`basename $p .gz`
    done
fi

PACKAGES=`find . -follow -name Packages -o -name Packages.gz -o \
    -name Sources -o -name Sources.gz`
DIRS=`for p in $PACKAGES; do dirname $p; done|sort -u`
COMPS=`for d in $DIRS; do echo $d | \
    sed 's,[^A-Za-z0-9-]*\([A-Za-z0-9-]*\)/.*,\1,'; done|sort -u`
ARCHS=`for d in $DIRS; do echo $d | \
    sed 's,.*binary-\([A-Za-z0-9-]*\),\1,'; done|sort -u`

for d in $DIRS; do
    cd $d
        ARCH=`echo $d | sed 's,.*binary-\([A-Za-z0-9-]*\),\1,'`
        COMP=`echo $d | \
            sed 's,[^A-Za-z0-9-]*\([A-Za-z0-9-]*\)/.*,\1,'`
        echo "Archive: $SUITE
Component: $COMP
Origin: $ORIGIN
Label: $LABEL
Architecture: $ARCH" > Release
    cd -
done

rm -f Release
MD5FILES=`find . -follow -name Packages -o -name Packages.gz -o \
    -name Sources -o -name Sources.gz -o -name Release \
    | sed 's,^[^/]*/,,'`

echo "Origin: $ORIGIN
Label: $LABEL
Suite: $SUITE
Codename: $CODENAME
Date: $DATE
Architectures:" `echo $ARCHS`"
Components:" `echo $COMPS`"
Description: $DESC
MD5Sum:" > Release

for m in $MD5FILES; do
    echo -n " " >> Release
    SIZE=`wc -c $m | sed 's/ *\([0-9]*\).*/\1/'`
    SUM=`md5sum $m | sed 's/^ *\([A-Fa-f0-9]*\) .*/\1/'`
    printf "%s %16d %s\n" $SUM $SIZE $m >> Release
done

echo "SHA1:" >> Release
for m in $MD5FILES; do
    echo -n " " >> Release
    SIZE=`wc -c $m | sed 's/ *\([0-9]*\).*/\1/'`
    SUM=`sha1sum $m | sed 's/^ *\([A-Fa-f0-9]*\) .*/\1/'`
    printf "%s %16d %s\n" $SUM $SIZE $m >> Release
done

if [ $SIGN_RELEASE -eq 1 ] ; then
    gpg --armor --default-key $SIGN_KEY --yes -b -o $ARCHIVE/Release.gpg $ARCHIVE/Release
fi