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

  1  #  ICE Revision: $Id: FoamFileGenerator.py 10078 2009-03-02 18:34:41Z 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 v=dic[k] 69 end="\n" 70 if type(dic)==DictProxy: 71 end=dic.getDecoration(k)+"\n" 72 73 if firstLevel: 74 end+="\n" 75 76 if type(k)==int: 77 s+=v 78 continue 79 80 if k.find("anonymValue")==0: 81 k="" 82 83 s+=(" "*indent)+k 84 if type(v)in [unicode,str]: 85 s+=" "+v+";"+end 86 elif type(v) in [dict,DictProxy]: 87 s+="\n"+(" "*indent)+"{\n" 88 s+=self.strDict(v,indent+2) 89 s+=(" "*indent)+"}"+end 90 elif type(v) in [list,UnparsedList]: 91 s+="\n" 92 s+=self.strList(v,indent+2) 93 if s[-1]=="\n": 94 s=s[:-1] 95 s+=";"+end 96 elif type(v) in [tuple,TupleProxy]: 97 s+=" "+self.strTuple(v,indent+2)+";"+end 98 elif type(v) in [int,float,long]: 99 s+=" "+str(v)+";"+end 100 elif v.__class__ in self.primitiveTypes: 101 s+=" "+str(v)+";"+end 102 elif v==None: 103 s+=" /* empty */ ;"+end 104 else: 105 error("Unhandled type",type(v)," for",v) 106 return s
107
108 - def strList(self,lst,indent=0):
109 s="" 110 111 if type(lst)==UnparsedList: 112 s+=(" "*indent)+str(len(lst))+" (" 113 s+=lst.data 114 if lst.data[-1]!="\n": 115 s+="\n" 116 s+=(" "*indent)+")\n" 117 return s 118 119 theLen=len(lst) 120 121 if len(lst)>2 and len(lst)%2==0: 122 if type(lst[0])in [unicode,str] and (type(lst[1]) in [dict,DictProxy]): 123 theLen=len(lst)/2 124 125 isFixedType=False 126 if len(lst)==3 or len(lst)==9 or len(lst)==6: 127 isFixedType=True 128 for l in lst: 129 try: 130 float(l) 131 except (ValueError,TypeError): 132 isFixedType=False 133 134 if isFixedType: 135 s+="("+string.join(map(lambda v:"%g"%v,lst))+")" 136 else: 137 if theLen>20: 138 s+=(" "*indent)+str(theLen)+"\n" 139 s+=(" "*indent)+"(\n" 140 for v in lst: 141 if type(v)in [unicode,str]: 142 s+=(" "*(indent+2))+v+"\n" 143 elif type(v) in [dict,DictProxy]: 144 s+="\n"+(" "*(indent+2))+"{\n" 145 s+=self.strDict(v,indent+4) 146 s+="\n"+(" "*(indent+2))+"}\n" 147 elif type(v) in [list,UnparsedList]: 148 s+="\n" 149 s+=self.strList(v,indent+2) 150 elif type(v)==tuple: 151 s+=" "+self.strTuple(v,indent+2)+" " 152 else: 153 s+=(" "*(indent+2))+str(v)+"\n" 154 155 s+=(" "*indent)+")\n" 156 157 return s
158
159 - def strTuple(self,lst,indent=0):
160 s="" 161 162 for v in lst: 163 if type(v)in [unicode,str]: 164 s+=v+" " 165 elif type(v) in [dict,DictProxy]: 166 s+="{\n" 167 s+=self.strDict(v,indent+4) 168 s+=(" "*(indent+2))+"} " 169 elif type(v) in [list,UnparsedList]: 170 s+=" " 171 s+=self.strList(v,indent+2) 172 else: 173 s+=(" "*(indent+2))+str(v)+" " 174 175 return s
176
177 -def makeString(data):
178 return str(FoamFileGenerator(data))
179
180 -class FoamFileGeneratorError(PyFoamException):
181 - def __init__(self,descr):
182 PyFoamException.__init__(self,descr)
183