Commit f5bbddb5 authored by Spyros Trigazis's avatar Spyros Trigazis Committed by Michele Tartara
Browse files

Add generic Parsers file

Extract the utility functions of Diskstats's collector
Parser so other collector Parsers can be able to use them.
Signed-off-by: default avatarSpyros Trigazis <>
Signed-off-by: default avatarMichele Tartara <>
Reviewed-by: default avatarMichele Tartara <>
parent 0a3aa3d6
......@@ -608,6 +608,7 @@ HS_LIB_SRCS = \
src/Ganeti/OpCodes.hs \
src/Ganeti/OpParams.hs \
src/Ganeti/Path.hs \
src/Ganeti/Parsers.hs \
src/Ganeti/Query/Cluster.hs \
src/Ganeti/Query/Common.hs \
src/Ganeti/Query/Export.hs \
{-# LANGUAGE OverloadedStrings #-}
{-| Utility functions for several parsers
This module holds the definition for some utility functions for two
parsers. The parser for the @/proc/stat@ file and the parser for the
@/proc/diskstats@ file.
Copyright (C) 2013 Google Inc.
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.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
module Ganeti.Parsers where
import Control.Applicative ((*>))
import qualified Data.Attoparsec.Text as A
import Data.Attoparsec.Text (Parser)
import Data.Text (unpack)
-- * Utility functions
-- | Our own space-skipping function, because A.skipSpace also skips
-- newline characters. It skips ZERO or more spaces, so it does not
-- fail if there are no spaces.
skipSpaces :: Parser ()
skipSpaces = A.skipWhile A.isHorizontalSpace
-- | A parser recognizing a number preceeded by spaces.
numberP :: Parser Int
numberP = skipSpaces *> A.decimal
-- | A parser recognizing a word preceded by spaces, and closed by a space.
stringP :: Parser String
stringP = skipSpaces *> fmap unpack (A.takeWhile $ not . A.isHorizontalSpace)
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