#/*##########################################################################
# Copyright (C) 2004-2014 European Synchrotron Radiation Facility
#
# This file is part of the PyMca X-ray Fluorescence Toolkit developed at
# the ESRF by the Software group.
#
# This toolkit 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.
#
# PyMca is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# PyMca; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# PyMca follows the dual licensing model of Riverbank's PyQt and cannot be
# used as a free plugin for a non-free program.
#
# Please contact the ESRF industrial unit (industry@esrf.fr) if this license
# is a problem for you.
#############################################################################*/
import sys
if sys.platform in ['win32']:
    def getspeclist():
        return []
try:
    from PyMca import sps
    STRING=sps.STRING
    CHAR=sps.CHAR
    DOUBLE=sps.DOUBLE
    FLOAT=sps.FLOAT
    SHORT=sps.SHORT
    UCHAR=sps.UCHAR
    USHORT=sps.USHORT
    TAG_ARRAY=sps.TAG_ARRAY
    TAG_MCA=sps.TAG_MCA
    TAG_IMAGE=sps.TAG_IMAGE
    TAG_SCAN=sps.TAG_SCAN
    TAG_INFO=sps.TAG_INFO
    TAG_MASK=sps.TAG_MASK
    TAG_STATUS=sps.TAG_STATUS
    IS_ARRAY=sps.IS_ARRAY
    IS_MCA=sps.IS_MCA
    IS_IMAGE=sps.IS_IMAGE
    error=sps.error
    updatecounter=sps.updatecounter
    TAG_FRAMES=sps.TAG_FRAMES
except:
    #make sure older versions of sps do not give troubles
    TAG_FRAMES=0x0100
    #windows does not use it
    pass

import threading
import time

spsdefaultoutput ={"axistitles":   '',
                        "xlabel":       '',
                        "ylabel":       '',
                        "title":        '',
                        "nopts":        0,
                        "xbeg":         0,
                        "xend":         0,
                        "plotlist":     [],
                        "datafile":     '/dev/null',
                        "scantype":     16,
                        "aborted":      0}

spsdefaultarraylist={}

spslock = threading.Lock()

def getarrayinfo(spec,shm):
    result = [0,] * 4

    spslock.acquire()
    try:
       result = sps.getarrayinfo (spec,shm)
    except: 
       pass
    spslock.release()
    return result

def getarraylist( spec ):
    result = []
    if specrunning(spec):
        spslock.acquire()
        try:
           result = sps.getarraylist( spec )
           spsdefaultarraylist[spec]=result
        except:
           pass 
        spslock.release()
    else:
        if spec in spsdefaultarraylist:
            return spsdefaultarraylist[spec]
        else:
            spsdefaultarraylist[spec]=[]
            return result
    return result

def isupdated(spec, shmenv):

    result = 0

    spslock.acquire()

    try:
        result = sps.isupdated( spec, shmenv  )
    except:
        pass

    spslock.release()
    return result

def putenv(spec,shmenv,cmd,outp):

    result = None

    spslock.acquire()

    try:
       result = sps.putenv(spec,shmenv,cmd,outp)
    except:
       pass  
   
    spslock.release()

    return result

def getenv(spec,shmenv,key):
    result = ''

    spslock.acquire()

    try:
        #  if key != 'plotlist':
        result = sps.getenv(spec,shmenv,key)
    except sps.error:
        if key in spsdefaultoutput.keys():
            result = spsdefaultoutput[key]
        pass

    spslock.release()

    return result

def updatedone(spec,shmenv):
    result = 0
    
    spslock.acquire()

    try:
       result = sps.updatedone(spec,shmenv)
    except: 
       pass

    spslock.release()
    return result

def getdata(spec,shm):

    result = []

    spslock.acquire()
    try:
        result = sps.getdata(spec,shm)
    except:
        pass
    spslock.release()
    return result

def getdatacol(spec,shm,idx):

    result = []

    spslock.acquire()
    try:
       result = sps.getdatacol(spec,shm,idx)
    except:
       pass
    spslock.release()
    return result

def getdatarow(spec,shm,idx):
    result = []

    spslock.acquire()
    try:
       result = sps.getdatarow(spec,shm,idx)
    except:
       pass
    spslock.release()
    return result

def getspeclist():

    result = []
    i = 0
    spslock.acquire()
    try:
       result = sps.getspeclist()
       # Awful patch because sometimes we miss the
       # shared memory detection on old machines.
       # We just try a maximum of three times
       while (not len(result)) and (i < 2):
           time.sleep(0.050)
           result = sps.getspeclist()
           i = i + 1
       if len(result):result.sort()
    except:
       pass
    spslock.release()
    return result

def getkeylist(spec,shmenv):

    result = []

    spslock.acquire()

    try:
        result = sps.getkeylist(spec,shmenv)
    except:
        pass

    spslock.release()

    return result

def specrunning(spec):
    spec_list = getspeclist()
    if spec not in spec_list:
        return 0
    else:
        return 1