#!/bin/bash

# A simple script to update spec or dsc file
# very, very simple. I am happy about patches which handles multiple files with different version numbers
#
# (C) 2014 martin.koegler@chello.at
# (C) 2010 by Adrian Schröter <adrian@suse.de>
#  
# This program is free software; you can redistribute it and/or  
# modify it under the terms of the GNU General Public License  
# as published by the Free Software Foundation; either version 2  
# of the License, or (at your option) any later version.  
# See http://www.gnu.org/licenses/gpl-2.0.html for full license text.  


# defaults
REGEX=
FILES=""

while test $# -gt 0; do
  case $1 in
    *-regex)
      REGEX="$2"
      shift
    ;;
    *-file)
      FILES="$FILES ${2##*/}"
      shift
    ;;
    *-outdir)
      MYOUTDIR="$2"
      shift
    ;;
    *)
      echo Unknown parameter $1.
      echo 'Usage: regex_replace --regex $REGEX --file $FILE --outdir $OUT'
      exit 1
    ;;
  esac
  shift
done

write_files () {
  if [ -z "$REGEX" ]; then
    echo "ERROR: no regular expresion is given via --regex parameter!"
    exit 1
  fi
  if [ -z "$FILES" ]; then
    echo "ERROR: no file is given via --file parameter!"
    exit 1
  fi
  if [ -z "$MYOUTDIR" ]; then
    echo "ERROR: no output directory is given via --outdir parameter!"
    exit 1
  fi

  for i in $FILES; do
    FILE=`ls -1 $i 2>/dev/null`
    [ -e "$FILE" ] || continue

    sed -e "$REGEX" "$FILE" > "$MYOUTDIR/$FILE" || exit 1

    if [ "${FILE#_service:}" != "$FILE" ]; then
      # we can remove service files, no need to store them twice
      rm -f "$FILE"
    fi
  done
}

write_files

exit 0