# $Id$
#
# Path information is stored on separate lines in XXXdirs.
# We extract each directory exists and add it to the appropriate PATH.
#

# Location of the XXXdirs files.
DIR=$HOME/.profile.d

# Set one path to be the same as another.
function copypath() {
  newpath="$1"; shift
  oldpath="$1"; shift

  # Sanitise and export.
  path="$(eval echo \$$oldpath)"
  [ -z "$path" ] || eval export $newpath="$path"

  unset path newpath oldpath
}

# Set a path from directories.
function makepath() {
  newpath="$1"; shift
  dirs="$1"; shift

  # Check the file exists.
  [ -e "$DIR/$dirs" ] || return

  # Read them.
  path=
  for dir in $(cat "$DIR/$dirs"); do
    [ -d "$dir" ] || continue

    path="$path:$dir"
  done
  unset dir

  # Sanitise path.
  path=${path#:}
  [ -z "$path" ] && return

  # Export.
  eval export $newpath="$path"

  unset path newpath dirs
}

makepath PATH bindirs
makepath C_INCLUDE_PATH incdirs
copypath CPLUS_INCLUDE_PATH C_INCLUDE_PATH
makepath LD_LIBRARY_PATH libdirs
copypath LD_RUN_PATH PATH
makepath MANPATH mandirs
makepath PKG_CONFIG_PATH pkgdirs

unset dirs copypath makepath newpath