author | etisserant |
Wed, 29 Aug 2007 07:58:49 +0200 | |
changeset 16 | b2c02ca6271e |
parent 15 | 7a473efc4530 |
child 17 | ee8cb104dbe0 |
permissions | -rw-r--r-- |
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""" |
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Base definitions for beremiz plugins |
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""" |
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import os |
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import types |
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import shutil |
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from xml.dom import minidom |
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import plugins |
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from xmlclass import GenerateClassesFromXSDstring |
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_BaseParamsClass = GenerateClassesFromXSDstring("""<?xml version="1.0" encoding="ISO-8859-1" ?> |
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<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"> |
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<xsd:element name="BaseParams"> |
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<xsd:complexType> |
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<xsd:attribute name="Name" type="xsd:string" use="required"/> |
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<xsd:attribute name="IEC_Channel" type="xsd:integer" use="required" default="-1"/> |
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<xsd:attribute name="Enabled" type="xsd:boolean" use="required" default="true"/> |
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</xsd:complexType> |
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</xsd:element> |
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</xsd:schema>""")[0]["BaseParams"] |
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NameTypeSeparator = '@' |
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class PlugTemplate: |
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This class is the one that define plugins. |
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""" |
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XSD = None |
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PlugChildsTypes = [] |
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PlugMaxCount = None |
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PluginMethods = [] |
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def _AddParamsMembers(self): |
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Classes = GenerateClassesFromXSDstring(self.XSD)[0] |
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self.PlugParams = [] |
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for name, XSDclass in Classes.items(): |
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if XSDclass.IsBaseClass: |
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obj = XSDclass() |
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self.PlugParams.append( (name, obj) ) |
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setattr(self, name, obj) |
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def __init__(self, PlugPath): |
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# Create BaseParam |
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self.BaseParams = _BaseParamsClass() |
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self.MandatoryParams = [("BaseParams", self.BaseParams)] |
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self._AddParamsMembers() |
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self.PluggedChilds = {} |
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def PluginXmlFilePath(self, PlugName=None): |
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return os.path.join(self.PlugPath(PlugName), "plugin.xml") |
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def PlugPath(self,PlugName=None): |
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if not PlugName: |
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PlugName = self.BaseParams.getName() |
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return os.path.join(self.PlugParent.PlugPath(), PlugName + NameTypeSeparator + self.PlugType) |
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def PlugTestModified(self): |
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return False |
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def OnPlugSave(self): |
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return True |
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def PlugRequestSave(self): |
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# If plugin do not have corresponding directory |
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if not os.path.isdir(self.PlugPath(PlugName)): |
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# Create it |
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os.mkdir(self.PlugPath(PlugName)) |
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# generate XML for all XML parameters controllers of the plugin |
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XMLString = '<?xml version="1.0" encoding="UTF-8"?>' |
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for nodeName, XMLController in self.PlugParams + self.MandatoryParams: |
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XMLString += XMLController.generateXMLTextMethod(self, nodeName, 0) |
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XMLFile = open(self.PluginXmlFilePath(PlugName),'w') |
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XMLFile.write(XMLString) |
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XMLFile.close() |
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# Call the plugin specific OnPlugSave method |
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self.OnPlugSave() |
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# go through all childs and do the same |
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for PlugChild in self.IterChilds(): |
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PlugChild.PlugRequestSave() |
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def PlugImport(self, src_PlugPath): |
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shutil.copytree(src_PlugPath, self.PlugPath) |
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return True |
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def PlugGenerate_C(self, buildpath, current_location, locations): |
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""" |
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Generate C code |
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@param current_location: Tupple containing plugin IEC location : %I0.0.4.5 => (0,0,4,5) |
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@param locations: List of complete variables locations \ |
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[(IEC_loc, IEC_Direction IEC_Type, Name)]\ |
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ex: [((0,0,4,5),'I','STRING','__IX_0_0_4_5'),...] |
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""" |
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return [],"" |
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def _Generate_C(self, buildpath, current_location, locations): |
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# Generate plugins [(Cfiles, CFLAGS)], LDFLAGS |
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PlugCFilesAndCFLAGS, PlugLDFLAGS = self.PlugGenerate_C(buildpath, current_location, locations) |
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# recurse through all childs, and stack their results |
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for PlugChild in self.IterChilds(): |
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# Compute chile IEC location |
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new_location = current_location + (self.BaseParams.getIEC_Channel()) |
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# Get childs [(Cfiles, CFLAGS)], LDFLAGS |
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CFilesAndCFLAGS, LDFLAGS = \ |
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PlugChild._Generate_C( |
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#keep the same path |
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buildpath, |
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# but update location (add curent IEC channel at the end) |
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new_location, |
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# filter locations that start with current IEC location |
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[ (l,d,t,n) for l,d,t,n in locations if l[0:len(new_location)] == new_location ]) |
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# stack the result |
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PlugCFilesAndCFLAGS += CFilesAndCFLAGS |
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PlugLDFLAGS += LDFLAGS |
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return PlugCFilesAndCFLAGS,PlugLDFLAGS |
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def BlockTypesFactory(self): |
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return [] |
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def STLibraryFactory(self): |
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return "" |
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def IterChilds(self): |
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for PlugType, PluggedChilds in self.PluggedChilds.items(): |
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for PlugInstance in PluggedChilds: |
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yield PlugInstance |
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def _GetChildBySomething(self, sep, something, matching): |
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toks = matching.split(sep,1) |
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for PlugInstance in self.IterChilds: |
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# if match component of the name |
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if getattr(PlugInstance.BaseParams, something) == toks[0]: |
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# if Name have other components |
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if len(toks) == 2: |
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# Recurse in order to find the latest object |
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return PlugInstance._GetChildBySomething( sep, something, toks[1]) |
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# No sub name -> found |
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return PlugInstance |
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144 |
# Not found |
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145 |
return None |
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146 |
|
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def GetChildByName(self, Name): |
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return self._GetChildBySomething('.',"Name", Name) |
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149 |
|
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def GetChildByIECLocation(self, Location): |
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return self._GetChildBySomething('_',"IEC_Channel", Name) |
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|
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def FindNewIEC_Channel(self, DesiredChannel): |
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""" |
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Changes IEC Channel number to DesiredChannel if available, nearest available if not. |
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@param DesiredChannel: The desired IEC channel (int) |
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157 |
""" |
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158 |
# Get Current IEC channel |
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CurrentChannel = self.BaseParams.getIEC_Channel() |
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160 |
# Do nothing if no change |
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if CurrentChannel == DesiredChannel: return CurrentChannel |
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# Build a list of used Channels out of parent's PluggedChilds |
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AllChannels=[] |
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164 |
for PlugInstance in self.PlugParent.IterChilds(): |
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165 |
if PlugInstance != self: |
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AllChannels.append(PlugInstance.BaseParams.getIEC_Channel()) |
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AllChannels.sort() |
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168 |
|
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# Now, try to guess the nearest available channel |
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res = DesiredChannel |
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while res in AllChannels: # While channel not free |
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if res < CurrentChannel: # Want to go down ? |
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res -= 1 # Test for n-1 |
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if res < 0 : return CurrentChannel # Can't go bellow 0, do nothing |
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else : # Want to go up ? |
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res += 1 # Test for n-1 |
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# Finally set IEC Channel |
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self.BaseParams.setIEC_Channel(res) |
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179 |
return res |
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180 |
|
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181 |
def OnPlugClose(self): |
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182 |
return True |
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183 |
|
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184 |
def _doRemoveChild(self, PlugInstance): |
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185 |
# Remove all childs of child |
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for SubPlugInstance in PlugInstance.IterChilds(): |
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187 |
PlugInstance._doRemoveChild(SubPlugInstance) |
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188 |
# Call the OnCloseMethod |
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189 |
PlugInstance.OnPlugClose() |
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190 |
# Delete plugin dir |
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191 |
shutil.rmtree(PlugInstance.PlugPath()) |
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192 |
# Remove child of PluggedChilds |
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self.PluggedChilds[PlugInstance.PlugType].remove(PlugInstance) |
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194 |
# Forget it... (View have to refresh) |
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195 |
|
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196 |
def PlugRemoveChild(self, PlugName): |
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197 |
# Fetch the plugin |
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PlugInstance = self.GetChildByName(PlugName) |
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199 |
# Ask to his parent to remove it |
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200 |
PlugInstance.PlugParent._doRemoveChild(PlugInstance) |
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201 |
|
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202 |
def PlugAddChild(self, PlugName, PlugType): |
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203 |
""" |
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204 |
Create the plugins that may be added as child to this node self |
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@param PlugType: string desining the plugin class name (get name from PlugChildsTypes) |
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@param PlugName: string for the name of the plugin instance |
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207 |
""" |
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208 |
PlugChildsTypes = dict(self.PlugChildsTypes) |
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209 |
# Check that adding this plugin is allowed |
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210 |
try: |
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211 |
PlugClass = PlugChildsTypes[PlugType] |
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212 |
except KeyError: |
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213 |
raise Exception, "Cannot create child %s of type %s "%(PlugName, PlugType) |
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214 |
|
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215 |
# if PlugClass is a class factory, call it. (prevent unneeded imports) |
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216 |
if type(PlugClass) == types.FunctionType: |
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217 |
PlugClass = PlugClass() |
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218 |
|
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219 |
# Eventualy Initialize child instance list for this class of plugin |
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220 |
PluggedChildsWithSameClass = self.PluggedChilds.setdefault(PlugType,list()) |
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221 |
# Check count |
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if PlugClass.MaxCount and len(PluggedChildsWithSameClass) >= PlugClass.MaxCount: |
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223 |
raise Exception, "Max count (%d) reached for this plugin of type %s "%(PlugClass.MaxCount, PlugType) |
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224 |
|
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225 |
# create the final class, derived of provided plugin and template |
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226 |
class FinalPlugClass(PlugClass, PlugTemplate): |
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227 |
""" |
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228 |
Plugin class is derivated into FinalPlugClass before being instanciated |
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229 |
This way __init__ is overloaded to ensure PlugTemplate.__init__ is called |
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230 |
before PlugClass.__init__, and to do the file related stuff. |
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231 |
""" |
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232 |
def __init__(_self): |
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233 |
# self is the parent |
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234 |
_self.PlugParent = self |
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235 |
# Keep track of the plugin type name |
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236 |
_self.PlugType = PlugType |
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237 |
# Call the base plugin template init - change XSD into class members |
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238 |
PlugTemplate.__init__(_self) |
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239 |
# If dir have already be made, and file exist |
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240 |
if os.path.isdir(_self.PlugPath(PlugName)) and os.path.isfile(_self.PluginXmlFilePath(PlugName)): |
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241 |
#Load the plugin.xml file into parameters members |
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242 |
_self.LoadXMLParams() |
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243 |
# Check that IEC_Channel is not already in use. |
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244 |
self.FindNewIEC_Channel(self.BaseParams.getIEC_Channel()) |
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245 |
# Call the plugin real __init__ |
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246 |
PlugClass.__init__(_self) |
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247 |
#Load and init all the childs |
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248 |
_self.LoadChilds() |
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249 |
else: |
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250 |
# If plugin do not have corresponding file/dirs - they will be created on Save |
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251 |
# Set plugin name |
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252 |
_self.BaseParams.setName(PlugName) |
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253 |
# Find an IEC number |
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254 |
_self.FindNewIEC_Channel(0) |
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255 |
# Call the plugin real __init__ |
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256 |
PlugClass.__init__(_self) |
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257 |
|
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258 |
# Create the object out of the resulting class |
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259 |
newPluginOpj = FinalPlugClass() |
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260 |
# Store it in PluggedChils |
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261 |
PluggedChildsWithSameClass.append(newPluginOpj) |
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262 |
|
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263 |
return newPluginOpj |
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264 |
|
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265 |
|
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266 |
def LoadXMLParams(self): |
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267 |
# PlugParams have been filled, make a local dict to work with |
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268 |
PlugParams = dict(self.PlugParams + self.MandatoryParams) |
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269 |
# Get the xml tree |
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270 |
xmlfile = open(self.PluginXmlFilePath(PlugName), 'r') |
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271 |
tree = minidom.parse(xmlfile) |
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272 |
xmlfile.close() |
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273 |
# for each root elements |
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274 |
for subtree in tree.childNodes: |
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275 |
# if a plugin specific parameter set |
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276 |
if subtree.nodeName in PlugParams: |
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277 |
#Load into associated xmlclass. |
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278 |
PlugParams[subtree.nodeName].loadXMLTree(subtree) |
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279 |
|
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280 |
# Basic check. Better to fail immediately. |
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if(self.BaseParams.getName() != PlugName): |
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raise Exception, "Project tree layout do not match plugin.xml %s!=%s "%(PlugName,self.BaseParams.getName()) |
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# Now, self.PlugPath() should be OK |
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284 |
|
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def LoadChilds(self): |
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# Iterate over all PlugName@PlugType in plugin directory, and try to open them |
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for PlugDir in os.listdir(self.PlugPath()): |
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if os.path.isdir(os.path.join(self.PlugPath(),PlugDir)) and \ |
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PlugDir.count(NameTypeSeparator) == 1: |
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try: |
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self.PlugAddChild(*PlugDir.split[NameTypeSeparator]) |
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except Exception, e: |
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293 |
print e |
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294 |
|
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class PluginsRoot(PlugTemplate): |
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296 |
|
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# For root object, available Childs Types are modules of the plugin packages. |
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PlugChildsTypes = [(name,lambda : getattr(__import__("plugins." + name), name).RootClass) for name in plugins.__all__] |
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299 |
|
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XSD = """<?xml version="1.0" encoding="ISO-8859-1" ?> |
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<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"> |
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<xsd:simpleType name="Win32Compiler"> |
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<xsd:restriction base="xsd:string"> |
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<xsd:enumeration value="Cygwin"/> |
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<xsd:enumeration value="MinGW"/> |
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<xsd:enumeration value="VC++"/> |
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307 |
</xsd:restriction> |
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</xsd:simpleType> |
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309 |
<xsd:element name="BeremizRoot"> |
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310 |
<xsd:complexType> |
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<xsd:element name="TargetType"> |
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312 |
<xsd:complexType> |
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313 |
<xsd:choice> |
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314 |
<xsd:element name="Win32"> |
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315 |
<xsd:complexType> |
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316 |
<xsd:attribute name="ToolChain" type="ppx:Win32Compiler" use="required" default="MinGW"/> |
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317 |
<xsd:attribute name="Priority" type="xsd:integer" use="required" default="0"/> |
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318 |
</xsd:complexType> |
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319 |
</xsd:element> |
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320 |
<xsd:element name="Linux"> |
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321 |
<xsd:complexType> |
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322 |
<xsd:attribute name="Compiler" type="xsd:string" use="required" default="gcc"/> |
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323 |
<xsd:attribute name="Nice" type="xsd:integer" use="required" default="0"/> |
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324 |
</xsd:complexType> |
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325 |
</xsd:element> |
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326 |
<xsd:element name="Xenomai"> |
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327 |
<xsd:complexType> |
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328 |
<xsd:attribute name="xeno-config" type="xsd:string" use="required" default="/usr/xenomai/"/> |
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329 |
<xsd:attribute name="Compiler" type="xsd:string" use="required" default="0"/> |
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330 |
<xsd:attribute name="Priority" type="xsd:integer" use="required" default="0"/> |
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331 |
</xsd:complexType> |
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332 |
</xsd:element> |
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333 |
<xsd:element name="RTAI"> |
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|
334 |
<xsd:complexType> |
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335 |
<xsd:attribute name="xeno-config" type="xsd:string" use="required" default="0"/> |
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336 |
<xsd:attribute name="Compiler" type="xsd:string" use="required" default="0"/> |
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337 |
<xsd:attribute name="Priority" type="xsd:integer" use="required" default="0"/> |
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338 |
</xsd:complexType> |
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339 |
</xsd:element> |
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340 |
<xsd:element name="Library"> |
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|
341 |
<xsd:complexType> |
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342 |
<xsd:attribute name="Dynamic" type="xsd:boolean" default="true"/> |
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343 |
<xsd:attribute name="Compiler" type="xsd:string" use="required" default="0"/> |
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344 |
</xsd:complexType> |
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345 |
</xsd:element> |
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346 |
</xsd:choice> |
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347 |
</xsd:complexType> |
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348 |
</xsd:element> |
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349 |
</xsd:complexType> |
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350 |
</xsd:element> |
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|
351 |
</xsd:schema> |
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352 |
""" |
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|
353 |
|
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354 |
def __init__(self, ProjectPath): |
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355 |
# self is the parent |
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|
356 |
self.PlugParent = None |
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357 |
# Keep track of the plugin type name |
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358 |
self.PlugType = "Beremiz" |
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359 |
# Keep track of the root plugin (i.e. project path) |
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|
360 |
self.ProjectPath = ProjectPath |
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|
361 |
# Change XSD into class members |
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362 |
self._AddParamsMembers() |
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363 |
self.PluggedChilds = {} |
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364 |
# No IEC channel, name, etc... |
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365 |
self.MandatoryParams = [] |
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366 |
# If dir have already be made, and file exist |
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|
367 |
if os.path.isdir(_self.PlugPath(PlugName)) and os.path.isfile(_self.PluginXmlFilePath(PlugName)): |
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368 |
#Load the plugin.xml file into parameters members |
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|
369 |
_self.LoadXMLParams() |
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370 |
#Load and init all the childs |
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|
371 |
_self.LoadChilds() |
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|
372 |
|
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373 |
def PlugPath(self,PlugName=None): |
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374 |
return self.ProjectPath |
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|
375 |
|
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376 |
def PluginXmlFilePath(self, PlugName=None): |
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377 |
return os.path.join(self.PlugPath(PlugName), "beremiz.xml") |
16 | 378 |
|
379 |