#!/bin/bash
# $0 -- get the specfiles from a local repository
# Copyright (C) 2005,2007 Davide Madrisan <davide.madrisan@gmail.com>
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License version 2 as published by the
# Free Software Foundation.  There is NO warranty; not even for MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.
#
# Report bugs to <davide.madrisan@gmail.com>

[ -z "$BASH" ] || [ ${BASH_VERSION:0:1} -lt 2 ] &&
   echo $"this script requires bash version 2 or better" >&2 && exit 1

me=(${0##*/} "0.2.2")

[ -r @libdir@/libmsgmng.lib ] ||
 { echo "$me: "$"library not found"": @libdir@/libmsgmng.lib" 1>&2
   exit 1; }

. @libdir@/libmsgmng.lib

# FIXME: add a po file for this script
#if [[ -z "$LANG" && -r /etc/sysconfig/i18n ]]; then
#   . /etc/sysconfig/i18n
#   export LANG
#fi
#TEXTDOMAIN="@package@"; export TEXTDOMAIN

# default values
let "verbose = 1"
let "update_days = 0"   # `0' means +\infty
unset update_opt
unset owner_opt

function version() {
   echo "\
$me, "$"version"" ${me[1]}""
"$"Get the specfiles from a local repository.""
Copyright (C) 2005-2007 Davide Madrisan <davide.madrisan@gmail.com>"
}

function copying() {
   echo "\
"$"This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License version 2 as published by the
Free Software Foundation.  There is NO warranty; not even for MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE."
}

function usage() {
   # $1: optional exit code (default is '1')
   version
   echo "
"$"Usage":"
   $me -s <path> -d <path> {-a | -u <int>} [-o <user>:<group>]

"$"where the above options mean":"
   -s, --sourcedir  "$"The local path where to find for the SRPMS packages""
   -d, --destdir    "$"The local path where the extracted specfile will be saved""
   -a, --all        "$"Get the specfiles from all the spmrs packages found""
   -u, --update     "$"Get the specfiles from srpms last modified <n> days ago""
   -o, --owner      "$"Set the ownership of all files created to the specified value""

"$"Operation modes":"
   -h, --help       "$"Print this help, then exit""
   -v, --version    "$"Print version number, then exit""
   -q, --quiet      "$"Run in quiet mode""

"$"Some examples":"
   $me -s /var/ftp/pub/SRPMS -d /var/temp/SPECS -o ftpuser:ftpuser -u 1

"$"Report bugs to <davide.madrisan@gmail.com>."""

   exit ${1:-1}
}

[ $# -eq 0 ] && usage

TEMP=`LC_ALL=C getopt \
   -o s:d:au:o:hvq \
   --long sourcedir:,destdir:,all,update:,owner:,help,version,quiet \
   -n "$me" -- "$@"`
[[ $? = 0 ]] || exit 1

eval set -- "$TEMP"

while :; do
   case $1 in
      -s|--sourcedir)
         sourcedir="$2"; shift ;;
      -d|--destdir)
         destdir="$2"; shift ;;
      -a|--all)
         let "update_days = 0"; shift ;;
      -u|--update)
         update_days="$2"; shift ;;
      -o|--owner)
         owner_opt="--owner $2"; shift ;;
      -q|--quiet)
         let "verbose = 0" ;;
      -h|--help)
         usage 0 ;;
      -v|--version)
         version; echo; copying; exit 0;;
      --) shift; break ;;
      *) notify.error $"(bug)"" -- "$"\`getopt' error"
   esac
   shift
done


[[ -d "$sourcedir" ]] ||
   notify.error $"not such a directory"": \`$sourcedir'"

if [[ ! -d "$destdir" ]]; then
   mkdir -p "$destdir" 2>/dev/null
   [ $? -ne 0 ] &&
      notify.error $"cannot create \`$destdir'"
fi

if [ "$update_days" != "0" ]; then
   echo "$update_days" | grep -Eq "^[0-9]+$" ||
      notify.error $"not a number"": \`$update_days'"
   update_opt="-ctime -${update_days}"
fi

pushd $destdir &>/dev/null
[ $? -ne 0 ] && notify.error "$destdir: "$"permission denied"

find "$sourcedir" -maxdepth 1 $update_opt -type f -name \*.src.rpm | \
while read file; do
   notify.note $"processing"": $file ..."
   rpm2cpio $file 2>/dev/null | \
   cpio --quiet --extract --unconditional $owner_opt "*.spec" 2>/dev/null
   [ $? -ne 0 ] &&
      notify.warning $"cannot extract the specfile from \`$file'"
done

popd &>/dev/null

notify.note $"\nall done, $destdir content updated"