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Diffstat (limited to 'pyuno/source/loader/pythonloader.py')
| -rw-r--r-- | pyuno/source/loader/pythonloader.py | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/pyuno/source/loader/pythonloader.py b/pyuno/source/loader/pythonloader.py new file mode 100644 index 000000000..02f901942 --- /dev/null +++ b/pyuno/source/loader/pythonloader.py @@ -0,0 +1,163 @@ +# -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*- +# +# This file is part of the LibreOffice project. +# +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. +# +# This file incorporates work covered by the following license notice: +# +# Licensed to the Apache Software Foundation (ASF) under one or more +# contributor license agreements. See the NOTICE file distributed +# with this work for additional information regarding copyright +# ownership. The ASF licenses this file to you under the Apache +# License, Version 2.0 (the "License"); you may not use this file +# except in compliance with the License. You may obtain a copy of +# the License at http://www.apache.org/licenses/LICENSE-2.0 . +# +import uno +import unohelper +import sys +import types +import os +from urllib.parse import unquote +from com.sun.star.uno import Exception,RuntimeException +from com.sun.star.loader import XImplementationLoader +from com.sun.star.lang import XServiceInfo + +MODULE_PROTOCOL = "vnd.openoffice.pymodule:" +DEBUG = 0 + +g_supportedServices = "com.sun.star.loader.Python", # referenced by the native C++ loader ! +g_implementationName = "org.openoffice.comp.pyuno.Loader" # referenced by the native C++ loader ! + +def splitUrl( url ): + nColon = url.find( ":" ) + if -1 == nColon: + raise RuntimeException( "PythonLoader: No protocol in url " + url, None ) + return url[0:nColon], url[nColon+1:len(url)] + +g_loadedComponents = {} +def checkForPythonPathBesideComponent( url ): + path = unohelper.fileUrlToSystemPath( url+"/pythonpath.zip" ); + if DEBUG == 1: + print(b"checking for existence of " + encfile( path )) + if 1 == os.access( encfile( path ), os.F_OK) and not path in sys.path: + if DEBUG == 1: + print(b"adding " + encfile( path ) + b" to sys.path") + sys.path.append( path ) + + path = unohelper.fileUrlToSystemPath( url+"/pythonpath" ); + if 1 == os.access( encfile( path ), os.F_OK) and not path in sys.path: + if DEBUG == 1: + print(b"adding " + encfile( path ) + b" to sys.path") + sys.path.append( path ) + +def encfile(uni): + return uni.encode( sys.getfilesystemencoding()) + +class Loader( XImplementationLoader, XServiceInfo, unohelper.Base ): + def __init__(self, ctx ): + if DEBUG: + print("pythonloader.Loader ctor") + self.ctx = ctx + + def getModuleFromUrl( self, url ): + if DEBUG: + print("pythonloader: interpreting url " + url) + protocol, dependent = splitUrl( url ) + if "vnd.sun.star.expand" == protocol: + exp = self.ctx.getValueByName( "/singletons/com.sun.star.util.theMacroExpander" ) + url = exp.expandMacros(unquote(dependent)) + protocol,dependent = splitUrl( url ) + + if DEBUG: + print("pythonloader: after expansion " + protocol + ":" + dependent) + + try: + if "file" == protocol: + # remove \..\ sequence, which may be useful e.g. in the build env + url = unohelper.absolutize( url, url ) + + # did we load the module already ? + mod = g_loadedComponents.get( url ) + if not mod: + mod = types.ModuleType("uno_component") + + # check for pythonpath.zip beside .py files + checkForPythonPathBesideComponent( url[0:url.rfind('/')] ) + + # read the file + filename = unohelper.fileUrlToSystemPath( url ) + + with open( filename, encoding='utf_8' ) as fileHandle: + src = fileHandle.read().replace("\r","") + if not src.endswith( "\n" ): + src = src + "\n" + + # compile and execute the module + codeobject = compile( src, encfile(filename), "exec" ) + mod.__file__ = filename + exec(codeobject, mod.__dict__) + g_loadedComponents[url] = mod + return mod + elif "vnd.openoffice.pymodule" == protocol: + nSlash = dependent.rfind('/') + if -1 != nSlash: + path = unohelper.fileUrlToSystemPath( dependent[0:nSlash] ) + dependent = dependent[nSlash+1:len(dependent)] + if not path in sys.path: + sys.path.append( path ) + mod = __import__( dependent ) + path_component, dot, rest = dependent.partition('.') + while dot == '.': + path_component, dot, rest = rest.partition('.') + mod = getattr(mod, path_component) + return mod + else: + if DEBUG: + print("Unknown protocol '" + protocol + "'"); + raise RuntimeException( "PythonLoader: Unknown protocol " + + protocol + " in url " +url, self ) + except Exception as e: + if DEBUG: + print ("Python import exception " + str(type(e)) + + " message " + str(e) + " args " + str(e.args)); + raise RuntimeException( "Couldn't load " + url + " for reason " + str(e), None ) + return None + + def activate( self, implementationName, dummy, locationUrl, regKey ): + if DEBUG: + print("pythonloader.Loader.activate") + + mod = self.getModuleFromUrl( locationUrl ) + implHelper = mod.__dict__.get( "g_ImplementationHelper" , None ) + if DEBUG: + print ("Fetched ImplHelper as " + str(implHelper)) + if implHelper is None: + return mod.getComponentFactory( implementationName, self.ctx.ServiceManager, regKey ) + else: + return implHelper.getComponentFactory( implementationName,regKey,self.ctx.ServiceManager) + + def writeRegistryInfo( self, regKey, dummy, locationUrl ): + if DEBUG: + print( "pythonloader.Loader.writeRegistryInfo" ) + + mod = self.getModuleFromUrl( locationUrl ) + implHelper = mod.__dict__.get( "g_ImplementationHelper" , None ) + if implHelper is None: + return mod.writeRegistryInfo( self.ctx.ServiceManager, regKey ) + else: + return implHelper.writeRegistryInfo( regKey, self.ctx.ServiceManager ) + + def getImplementationName( self ): + return g_implementationName + + def supportsService( self, ServiceName ): + return ServiceName in self.getSupportedServiceNames() + + def getSupportedServiceNames( self ): + return g_supportedServices + +# vim: set shiftwidth=4 softtabstop=4 expandtab: |