Package PyFoam :: Package Basics :: Module FoamFileGenerator
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Source Code for Module PyFoam.Basics.FoamFileGenerator

  1  #  ICE Revision: $Id: /local/openfoam/Python/PyFoam/PyFoam/Basics/FoamFileGenerator.py 5431 2009-08-18T22:13:53.461504Z bgschaid  $  
  2  """Transform a Python data-structure into a OpenFOAM-File-Representation""" 
  3   
  4  from PyFoam.Error import error,PyFoamException 
  5  from PyFoam.Basics.DataStructures import Vector,Field,Dimension,TupleProxy,DictProxy,Tensor,SymmTensor,Unparsed,UnparsedList 
  6   
  7  import string 
  8   
9 -class FoamFileGenerator(object):
10 """Class that generates a OpenFOAM-compatible representation of a 11 data-structure""" 12 13 primitiveTypes=[SymmTensor,Tensor,Vector,Dimension,Field,Unparsed] 14
15 - def __init__(self,data,header=None):
16 """@param data: data structure that will be turned into a 17 Foam-compatible file 18 @param header: header information that is to be prepended 19 """ 20 21 self.data=data 22 self.header=header
23
24 - def __str__(self):
25 return self.makeString()
26
27 - def makeString(self,firstLevel=False):
28 """turns the data into a string""" 29 result="" 30 if self.header: 31 result+="FoamFile\n{\n"+self.strDict(self.header,indent=1)+"}\n\n" 32 33 if type(self.data) in [dict,DictProxy]: 34 result+=self.strDict(self.data,firstLevel=firstLevel) 35 elif type(self.data) in [tuple,TupleProxy]: 36 result+=self.strTuple(self.data) 37 elif type(self.data) in [list,UnparsedList]: 38 result+=self.strList(self.data) 39 elif self.data==None: 40 raise FoamFileGeneratorError("<None> found") 41 else: 42 result+=self.strPrimitive(self.data) 43 44 return result
45
46 - def strPrimitive(self,pri):
47 if type(pri) in [int,float,long,str,unicode]: 48 return str(pri) 49 elif type(pri)==bool: 50 if pri: 51 return "yes" 52 else: 53 return "no" 54 elif pri.__class__ in self.primitiveTypes: 55 return str(pri) 56 else: 57 error("List, Dict or valid primitve expected,",type(pri),"found in",pri)
58
59 - def strDict(self,dic,indent=0,firstLevel=False):
60 s="" 61 if type(dic)==DictProxy: 62 order=dic._order 63 else: 64 order=dic.keys() 65 order.sort() 66 67 for k in order: 68 try: 69 v=dic[k] 70 except KeyError: 71 v=dic.getRegexpValue(k) 72 73 end="\n" 74 if type(dic)==DictProxy: 75 end=dic.getDecoration(k)+"\n" 76 77 if firstLevel: 78 end+="\n" 79 80 if type(k)==int: 81 s+=v 82 continue 83 84 if k.find("anonymValue")==0: 85 k="" 86 87 s+=(" "*indent)+k 88 if type(v)in [unicode,str]: 89 s+=" "+v+";"+end 90 elif type(v) in [dict,DictProxy]: 91 s+="\n"+(" "*indent)+"{\n" 92 s+=self.strDict(v,indent+2) 93 s+=(" "*indent)+"}"+end 94 elif type(v) in [list,UnparsedList]: 95 s+="\n" 96 s+=self.strList(v,indent+2) 97 if s[-1]=="\n": 98 s=s[:-1] 99 s+=";"+end 100 elif type(v) in [tuple,TupleProxy]: 101 s+=" "+self.strTuple(v,indent+2)+";"+end 102 elif type(v) in [int,float,long]: 103 s+=" "+str(v)+";"+end 104 elif type(v)==bool: 105 if v: 106 s+=" yes;\n" 107 else: 108 s+=" no;\n" 109 elif v.__class__ in self.primitiveTypes: 110 s+=" "+str(v)+";"+end 111 elif v==None: 112 s+=" /* empty */ ;"+end 113 else: 114 error("Unhandled type",type(v)," for",v) 115 return s
116
117 - def strList(self,lst,indent=0):
118 s="" 119 120 if type(lst)==UnparsedList: 121 s+=(" "*indent)+str(len(lst))+" (" 122 s+=lst.data 123 if lst.data[-1]!="\n": 124 s+="\n" 125 s+=(" "*indent)+")\n" 126 return s 127 128 theLen=len(lst) 129 130 if len(lst)>2 and len(lst)%2==0: 131 if type(lst[0])in [unicode,str] and (type(lst[1]) in [dict,DictProxy]): 132 theLen=len(lst)/2 133 134 isFixedType=False 135 if len(lst)==3 or len(lst)==9 or len(lst)==6: 136 isFixedType=True 137 for l in lst: 138 try: 139 float(l) 140 except (ValueError,TypeError): 141 isFixedType=False 142 143 if isFixedType: 144 s+="("+string.join(map(lambda v:"%g"%v,lst))+")" 145 else: 146 if theLen>20: 147 s+=(" "*indent)+str(theLen)+"\n" 148 s+=(" "*indent)+"(\n" 149 for v in lst: 150 if type(v)in [unicode,str]: 151 s+=(" "*(indent+2))+v+"\n" 152 elif type(v) in [dict,DictProxy]: 153 s+="\n"+(" "*(indent+2))+"{\n" 154 s+=self.strDict(v,indent+4) 155 s+="\n"+(" "*(indent+2))+"}\n" 156 elif type(v) in [list,UnparsedList]: 157 s+="\n" 158 s+=self.strList(v,indent+2) 159 elif type(v)==tuple: 160 s+=" "+self.strTuple(v,indent+2)+" " 161 else: 162 s+=(" "*(indent+2))+str(v)+"\n" 163 164 s+=(" "*indent)+")\n" 165 166 return s
167
168 - def strTuple(self,lst,indent=0):
169 s="" 170 171 for v in lst: 172 if type(v)in [unicode,str]: 173 s+=v+" " 174 elif type(v) in [dict,DictProxy]: 175 s+="{\n" 176 s+=self.strDict(v,indent+4) 177 s+=(" "*(indent+2))+"} " 178 elif type(v) in [list,UnparsedList]: 179 s+=" " 180 s+=self.strList(v,indent+2) 181 else: 182 s+=(" "*(indent+2))+str(v)+" " 183 184 return s
185
186 -def makeString(data):
187 return str(FoamFileGenerator(data))
188
189 -class FoamFileGeneratorError(PyFoamException):
190 - def __init__(self,descr):
191 PyFoamException.__init__(self,descr)
192