autospec/autospec.in

#!/bin/bash
#         _\|/_
#         (o o)
# +----oOO-{_}-OOo-----------------------------------------------------------+
# |                                                                          |
# | $0 -- help creating rpm specfiles and automatically update rpm packages  |
# | Copyright (C) 2004-2012 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##*/} "@version@" "@date@")

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

# default values
let "pck_update = 0"
let "pck_extract = 0"
let "spec_create = 0"
let "config_getvar = 0"
let "print_help = 0"
let "print_version = 0"

function autospec.version() {
   echo "\
${me[0]} ${me[1]}
Copyright (C) 2004-2012 Davide Madrisan <davide.madrisan@gmail.com>"
}

function autospec.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 autospec.usage() {
   # $1: optional exit code (default is '1')
   autospec.version
   echo "
"$"Automatically update rpm packages and help creating new specfiles.""

"$"Operation modes"":
 -u, --update       "$"Update the given package to a specified version and release""
 -s, --source       "$"Try to create a specfile for the specified tarball""
 -x, --extract      "$"Extract a given file or list of files from a srpm archive""
     --eval         "$"Print the value of the given configuration variable""
 -h, --help         "$"Print this help, then exit""
 -V, --version      "$"Print version number, then exit""
 -q, --quiet        "$"Run in quiet mode""
 -D, --debug        "$"Run in debugging mode (very verbose output)""

"$"Common options"":
 --colors           "$"Select the theme to be used for the colorized output""
 -C, --config       "$"Use an alternate user configuration file""
 
"$"Usage"":
  "$"Use '-u -h', '-s -h', '-x -h', and '--eval -h' to display specific command line options.""

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

   exit ${1:-1}
}

[ $# -eq 0 ] && autospec.usage

# load the warning/error/debug/ message handling library
# to define the 'notify()' function

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

. @libdir@/libmsgmng.lib
notify.disable_colors

# load the configuration file(s)
[ -r @libdir@/libcfg.lib ] ||
 { echo "$me: "$"library not found"": @libdir@/libcfg.lib" 1>&2
   exit 1; }

. @libdir@/libcfg.lib

# Little helper function for reading args from the commandline.
# it automatically handles -a b and -a=b variants, and returns 1 if
# we need to shift $3.
# see. /usr/sbin/mkinitrd (dracut-024)
function read_arg() {
   # $1 = arg name
   # $2 = arg value
   # $3 = arg parameter
   local rematch='^[^=]*=(.*)$'
   if [[ $2 =~ $rematch ]]; then
      read "$1" <<< "${BASH_REMATCH[1]}"
   elif [[ $3 != -* ]]; then
      # Only read next arg if it not an arg itself.
      read "$1" <<< "$3"
      # There is no way to shift our callers args, so
      # return 1 to indicate they should do it instead.
      return 1
   fi
}

args=()
cmdline_vars=()

while (($# > 0)); do
   args[${#args[*]}]="$1"
   case ${1%%=*} in
      -u|--update)
         let "pck_update = 1" ;;
      -s|--source)
         let "spec_create = 1" ;;
      -x|--extract)
         let "pck_extract = 1" ;;
      --eval|--eval=*)
         let "config_getvar = 1" ;;
      -D|--debug)
         let "verbose = 2" ;;
      -q|--quiet)
         let "verbose = 0" ;;
      -h|--help)
         let "print_help = 1" ;;
      -V|--version)
         let "print_version = 1" ;;
      --colors)
         read_arg color_scheme "$@" || 
          { shift; args[${#args[*]}]="$1"; } 
         notify.debug "color_scheme = \"$color_scheme\""
         cmdline_vars[${#cmdline_vars[*]}]="color_scheme=\"$color_scheme\""
      ;;
      -C|--config)
         read_arg cfgfile_list_cmdline "$@" ||
          { shift; args[${#args[*]}]="$1"; }
         notify.debug "cfgfile_list_cmdline = \"$cfgfile_list_cmdline\""
      ;;
      *) ;;
   esac
   shift
done

notify.debug "[${me[0]}, "$"version"" ${me[1]}]"

cfg_load_files "$cfgfile_list_cmdline"

# otherwrite the configuration variables by set them again using
# the values defined via the commanline options
for i in ${!cmdline_vars[@]}; do
   notify.debug "eval \"${cmdline_vars[i]}\""
   eval "${cmdline_vars[i]}"
done

[ "$logging" = "1" ] && color_scheme="none"
notify.enable_colors "$color_scheme"

case "$(( $pck_update + $spec_create + $pck_extract + $config_getvar ))" in
   0) [ "$print_help" = "1" ] && autospec.usage 0
      if [ "$print_version" = "1" ]; then
         # only print the version number in quiet mode
         [ "$verbose" = 0 ] && { echo "${me[1]}"; exit 0; }
         autospec.version;
         autospec.copying
         exit 0;
      fi
      autospec.usage 1 ;;
   1) ;;
   *) autospec.usage 1 ;;
esac

# checking for errors in the configuration file
[ "$config_getvar" = 1 ] || config.integrity

# load and execute the required plugin...

[ "$config_getvar" = 1 ] && plugin_to_run="$plugin_config_getvar"
[ "$pck_extract"   = 1 ] && plugin_to_run="$plugin_pck_extract"
[ "$spec_create"   = 1 ] && plugin_to_run="$plugin_spec_create"
[ "$pck_update"    = 1 ] && plugin_to_run="$plugin_pck_update"

[ -n "$plugin_to_run" ] ||
   notify.error "\`$plugin_to_run': "$"unset in the configuration files"
[ -x "$plugin_to_run" ] ||
   notify.error $"plugin not found"": \`$plugin_to_run'"

tmpargfile=$(mktemp -q -t $me.XXXXXXXX)
[ $? -eq 0 ] || notify.error $"can't create temporary files"
notify.debug "tmpargfile = \`${NOTE}$tmpargfile${NORM}'"

# workaround to bypass the issues related to bash expansion in multi-word
# strings (ex: autospec -u s.spec -a4 1.0 --changelog "here's the problem")
echo -n "set -- " > $tmpargfile
for i in `seq 1 1 ${#args[@]}`; do
   echo -n "\"${args[$i-1]}\" " >> $tmpargfile
done
echo >> $tmpargfile

notify.debug "\
running: \`$plugin_to_run --autospec-args-file=$tmpargfile'"

notify.debug "[$tmpargfile]"
notify.debug "$(cat $tmpargfile)"

$plugin_to_run --autospec-args-file=$tmpargfile

exit $?