rpg-config.sh

#!/bin/sh
# The `rpg-config` program dumps configuration variables to standard output
# in a format suitable for sourcing into a shell or opens an editor on rpg
# configuration files.
set -e
. rpg-sh-setup

ARGV="$@"
USAGE '${PROGNAME}
       ${PROGNAME} -u
       ${PROGNAME} -s
Show or edit rpg configuration.

Options
  -u          Edit the user configuration file
  -s          Edit the system configuration file
'

# With `-u` or `-s`, open an editor on the configuration file. If the file
# doesn't exist, create it with the program's current output but comment out
# all variable assignment lines.
editfile=
while getopts su opt
do
    case $opt in
    s) editfile="$RPGSYSCONF";;
    u) editfile="$RPGUSERCONF";;
    ?) helpthem;exit 2;;
    esac
done
shift $(( $OPTIND - 1 ))

test -n "$editfile" && {
    test -f "$editfile" || {
        {
            echo "# $(date)"
            echo "# This file was generated by "$PROGNAME" on" \
                 "behalf of $(id -un)"
            echo "# Remove comment characters and edit values to" \
                 "change the default config"
            echo
            "$0"
        } |sed 's/^\([^#]\)/# \1/' >"$editfile"
    }
    ${EDITOR:-vi} "$editfile"
    exit $?
}

# Dump config values with some comments so we can use it to generate
# config files in edit mode.
cat <<CONFIG
# rpg installs package contents in these locations:
RPGBIN='$RPGBIN'
RPGLIB='$RPGLIB'
RPGMAN='$RPGMAN'

# rpg keeps its package database, index, and gem cache in these locations:
RPGPATH='$RPGPATH'
RPGDB='$RPGDB'
RPGINDEX='$RPGINDEX'
RPGPACKS='$RPGPACKS'
RPGCACHE='$RPGCACHE'

# rpg sources these configuration files before executing commands:
RPGSYSCONF='$RPGSYSCONF'
RPGUSERCONF='$RPGUSERCONF'

# rpg uses these options to control various aspects of its behavior:
RPGTRACE=$RPGTRACE
RPGSHOWBUILD=$RPGSHOWBUILD
RPGSTALETIME='$RPGSTALETIME'
RPGSPECSURL='$RPGSPECSURL'
RPGGEMURL='$RPGGEMURL'
CONFIG