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41 results

GModel.cpp

  • onelab.py 11.83 KiB
    """
    OneLab - Copyright (C) 2011-2013 ULg-UCL
    
    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation
    files (the "Software"), to deal in the Software without
    restriction, including without limitation the rights to use, copy,
    modify, merge, publish, distribute, and/or sell copies of the
    Software, and to permit persons to whom the Software is furnished
    to do so, provided that the above copyright notice(s) and this
    permission notice appear in all copies of the Software and that
    both the above copyright notice(s) and this permission notice
    appear in supporting documentation.
    
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE
    COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR
    ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY
    DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
    WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
    ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
    OF THIS SOFTWARE.
    
    Please report all bugs and problems to the public mailing list
    <gmsh@geuz.org>.
    """
    
    import socket, struct, os, sys
    _VERSION = '1.05'
    
    def file_exist(filename):
      try:
        with open(filename) as f:
          return True
      except IOError:
        return False
    
    def path(ref,inp):
      if inp[0] == '/' or inp[0] == '\\' or (len(inp) > 2 and inp[1] == '\:'):
         return inp # do nothing, inp is an absolute path
      else: # append inp to the path of the reference file
         return os.path.dirname(ref) + os.sep + inp
    
    class _parameter() :
      _membersbase = [
        ('name', 'string'), ('label', 'string', ''), ('help', 'string', ''),
        ('neverChanged', 'int', 0), ('changed', 'int', 1), ('visible', 'int', 1),
        ('readOnly', 'int', 0), ('attributes', ('dict', 'string', 'string'), {}),
        ('clients', ('list', 'string'), [])
      ]
      _members = {
        'string' : _membersbase + [
          ('value', 'string',''), ('kind', 'string', 'generic'), ('choices', ('list', 'string'), [])
        ],
        'number' : _membersbase + [
          ('value', 'float',0),
          ('min', 'float', -sys.float_info.max), ('max', 'float', sys.float_info.max),
          ('step', 'float', 0.), ('index', 'int', -1), ('choices', ('list', 'float'), []),
          ('labels', ('dict', 'float', 'string'), {})
        ]
      }
    
      def __init__(self, type, **values) :
        self.type = type
        for i in _parameter._members[self.type] :
          setattr(self, i[0], values[i[0]] if i[0] in values else i[2])
    
      def tochar(self) :
        def tocharitem(l, t, v) :
          if t=='string' : l.append(v)
          elif t =='int': l.append(str(v))
          elif t=='float' : l.append('%.16g' % v)
          elif t[0]=='list' : 
            l.append(str(len(v)))
            for i in v : tocharitem(l, t[1], i)
          elif t[0]=='dict' :
            l.append(str(len(v)))
            for i, j in v.items() :
              tocharitem(l, t[1], i)
              tocharitem(l, t[2], j)
        msg = [_VERSION, self.type]
        for i in _parameter._members[self.type] :
          tocharitem(msg, i[1], getattr(self, i[0]))
        return '\0'.join(msg)
    
      def fromchar(self, msg) :
        def fromcharitem(l, t) :
          if t=='string' : return l.pop()
          elif t =='int': return int(l.pop())
          elif t=='float' : return float(l.pop())
          elif t[0]=='list' : return [fromcharitem(l, t[1]) for i in range(int(l.pop()))]
          elif t[0]=='dict' : return dict([(fromcharitem(l, t[1]),fromcharitem(l, t[2])) for i in range(int(l.pop()))])
        l = msg.split('\0')
        l.reverse()
        if l.pop() != _VERSION :
          print('onelab version mismatch')
        if l.pop() != self.type :
          print('onelab parameter type mismatch')
        for p in  _parameter._members[self.type]:
          setattr(self, p[0], fromcharitem(l, p[1]))
        return self
    
      def modify(self, **param) :
        for i in _parameter._members[self.type] :
          if i[0] in param :
            setattr(self, i[0], param[i[0]]) #NB: no else statement => update
    
    
    class client :
      _GMSH_START = 1
      _GMSH_STOP = 2
      _GMSH_INFO = 10
      _GMSH_WARNING = 11
      _GMSH_ERROR = 12
      _GMSH_PROGRESS = 13
      _GMSH_MERGE_FILE = 20
      _GMSH_PARSE_STRING = 21
      _GMSH_PARAMETER = 23
      _GMSH_PARAMETER_QUERY = 24
      _GMSH_CONNECT = 27
      _GMSH_OLPARSE = 28
      _GMSH_PARAMETER_NOT_FOUND = 29
      _GMSH_PARAMETER_CLEAR = 31
      _GMSH_PARAMETER_UPDATE = 32
    
      def _receive(self) :
        def buffered_receive(l) :
          msg = b''
          while len(msg) < l:
            chunk = self.socket.recv(l - len(msg))
            if not chunk :
              RuntimeError('onelab socket closed')
            msg += chunk
          return msg
        msg = buffered_receive(struct.calcsize('ii'))
        t, l = struct.unpack('ii', msg)
        msg = buffered_receive(l).decode('utf-8')
        if t == self._GMSH_INFO :
          print('onelab info : %s' % msg)
        return t, msg
    
      def _send(self, t, msg) :
        m = msg.encode('utf-8')
        try:
          if self.socket.send(struct.pack('ii%is' %len(m), t, len(m), m)) == 0 :
            RuntimeError('onelab socket closed')
        except socket.error:
          self.socket.close()
          self._createSocket()
          self.socket.send(struct.pack('ii%is' %len(m), t, len(m), m))
    
      def _define_parameter(self, param) :
        if not self.socket :
          return param.value
        self._send(self._GMSH_PARAMETER_QUERY, param.tochar())
        (t, msg) = self._receive() 
        if t == self._GMSH_PARAMETER :
          self._send(self._GMSH_PARAMETER_UPDATE, param.tochar()) #enrich a previous decl.
          return param.fromchar(msg).value # use value from server
        elif t == self._GMSH_PARAMETER_NOT_FOUND :
          self._send(self._GMSH_PARAMETER, param.tochar()) #declaration
          return param.value
        
      def defineNumber(self, name, **param):
        if 'labels' in param :
          param["choices"] = param["labels"].keys()
        p = _parameter('number', name=name, **param)
        if 'value' not in param : #make the parameter readOnly
          p.readOnly = 1
          p.attributes={'Highlight':'AliceBlue'}
        value = self._define_parameter(p)
        return value
    
      def defineString(self, name, **param):
        p = _parameter('string', name=name, **param)
        if 'value' not in param : #make the parameter readOnly
          p.readOnly = 1
          p.attributes={'Highlight':'AliceBlue'}
        self._define_parameter(p)
        return p.value
      
      def setNumber(self, name, **param):
        if not self.socket :
          return
        p = _parameter('number', name=name)
        self._send(self._GMSH_PARAMETER_QUERY, p.tochar())
        (t, msg) = self._receive() 
        if t == self._GMSH_PARAMETER :
          p.fromchar(msg).modify(**param)
        elif t == self._GMSH_PARAMETER_NOT_FOUND :
          p.modify(**param)
        self._send(self._GMSH_PARAMETER, p.tochar())
    
      def setString(self, name, **param):
        if not self.socket :
          return
        p = _parameter('string', name=name)
        self._send(self._GMSH_PARAMETER_QUERY, p.tochar())
        (t, msg) = self._receive() 
        if t == self._GMSH_PARAMETER : #modify an existing parameter
          p.fromchar(msg).modify(**param)
        elif t == self._GMSH_PARAMETER_NOT_FOUND : #create a new parameter
          p.modify(**param)
        p.readOnly = 1
        p.attributes={'Highlight':'AliceBlue'}   
        self._send(self._GMSH_PARAMETER, p.tochar())
    
      def addNumberChoice(self, name, value):
        if not self.socket :
          return
        p = _parameter('number', name=name)
        self._send(self._GMSH_PARAMETER_QUERY, p.tochar())
        (t, msg) = self._receive() 
        if t == self._GMSH_PARAMETER :
          p.fromchar(msg).choices.append(value)
        elif t == self._GMSH_PARAMETER_NOT_FOUND :
          print ('Unknown parameter %s' %(param.name))
        self._send(self._GMSH_PARAMETER, p.tochar())
    
      def _get_parameter(self, param, warn_if_not_found=True) :
        if not self.socket :
          return
        self._send(self._GMSH_PARAMETER_QUERY, param.tochar())
        (t, msg) = self._receive() 
        if t == self._GMSH_PARAMETER :
          param.fromchar(msg)
        elif t == self._GMSH_PARAMETER_NOT_FOUND and warn_if_not_found :
          print ('Unknown parameter %s' %(param.name))
    
      def getNumber(self, name, warn_if_not_found=True):
        param = _parameter('number', name=name)
        self._get_parameter(param, warn_if_not_found)
        return param.value
    
      def getString(self, name, warn_if_not_found=True):
        param = _parameter('string', name=name)
        self._get_parameter(param, warn_if_not_found)
        return param.value
    
      def show(self, name) :
        if not self.socket :
          return
        param = _parameter('number', name=name)
        self._send(self._GMSH_PARAMETER_QUERY, param.tochar())
        (t, msg) = self._receive() 
        if t == self._GMSH_PARAMETER :
          print (msg)
        elif t == self._GMSH_PARAMETER_NOT_FOUND :
          print ('Unknown parameter %s' %(name))
    
      def openGeometry(self, filename) :
        if not self.socket or not filename :
          return
        #if self.action == 'compute' and self.getString('Gmsh/MergedGeo', False) == filename :
        if self.getString('Gmsh/MergedGeo', False) == filename :
          return
        else :
          self.setString('Gmsh/MergedGeo', value=filename)
    #    if filename[0] != '/' :
    #      filename = os.getcwd() + "/" + filename
        self._send(self._GMSH_MERGE_FILE, filename)
    
      def mesh(self, filename) :
        if not self.socket :
          return
        if filename[0] != '/' :
          filename = os.getcwd() + "/" + filename
        self._send(self._GMSH_PARSE_STRING, 'Mesh 3; Save "' + filename + '";')
    
      def sendCommand(self, command) :
        if not self.socket :
          return
        self._send(self._GMSH_PARSE_STRING, command + ' ;')
        
      def mergeFile(self, filename) :
        if not self.socket :
          return
        #self._send(self._GMSH_PARSE_STRING, 'Merge "' + filename + '";')
        self._send(self._GMSH_MERGE_FILE,filename)
    
      def sendInfo(self, msg) :
        if not self.socket :
          print (msg)
          return
        self._send(self._GMSH_INFO, msg)
    
      def sendWarning(self, msg) :
        if not self.socket :
          print (msg)
          return
        self._send(self._GMSH_WARNING, msg)
    
      def sendError(self, msg) :
        if not self.socket :
          print (msg)
          return
        self._send(self._GMSH_ERROR, msg)
    
      def preProcess(self, filename) :
        if not self.socket :
          return
        self._send(self._GMSH_OLPARSE, filename)
        (t, msg) = self._receive() 
        if t == self._GMSH_OLPARSE :
          print (msg)
            
      def _createSocket(self) :
        addr = self.addr
        if '/' in addr or '\\' in addr or ':' not in addr :
          self.socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
          self.socket.connect(addr)
        else :
          self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
          s = addr.split(':')
          self.socket.connect((s[0], int(s[1])))
    
      def _wait_on_subclients(self):
        if not self.socket :
          return
        while self.NumSubClients > 0:
          (t, msg) = self._receive() 
          if t == self._GMSH_STOP :
            self.NumSubClients -= 1
    
      def run(self, name, command, arguments):
        if not self.socket :
          return
        if self.action == "check":
          msg = [name, command]
        else:
          msg = [name, command + ' ' + arguments]
        self._send(self._GMSH_CONNECT, '\0'.join(msg))
        self.NumSubClients +=1
        self._wait_on_subclients() # makes the subclient blocking
    
      def __init__(self):
        self.socket = None
        self.name = ""
        self.addr = ""
        self.NumSubClients = 0
        for i, v in enumerate(sys.argv) :
          if v == '-onelab':
            self.name = sys.argv[i + 1]
            self.addr = sys.argv[i + 2]
            self._createSocket()
            self._send(self._GMSH_START, str(os.getpid()))
        self.action = self.getString(self.name + '/Action')
        self.setNumber('IsPyMetamodel',value=1,visible=0)
        if self.action == "initialize": exit(0)
    
      def finalize(self):
        # code aster python interpreter does not call the destructor at exit, it is
        # necessary to call finalize() epxlicitely
        if self.socket :
          self._wait_on_subclients()
          self._send(self._GMSH_STOP, 'Goodbye!')
          self.socket.close()
          self.socket = None
        
      def __del__(self):
        self.finalize()