re-work prefix handling and undo cppuhelper ABI change, add unit test

use a separate prefix enabled method instead of changing the ABI of cppuhelper
also - lookup the prefix in the dllcomponentloader in case we are called this way
also - add a unit test for the prefix change

cppuhelper/inc/cppuhelper/shlib.hxx

@@ -43,6 +43,30 @@ namespace cppu
     directory.  The resulting path of the library will be checked against environment variable
     CPLD_ACCESSPATH if set.
 
+    @param rLibName name of the library
+    @param rPath optional path
+    @param rImplName implementation to be retrieved from the library
+    @param xMgr service manager to be provided to the component
+    @param xKey registry key to be provided to the component
+    @return
+    factory instance (::com::sun::star::lang::XSingleComponentFactory or
+    ::com::sun::star::lang::XSingleComponentFactory)
+*/
+::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >
+SAL_CALL loadSharedLibComponentFactory(
+    ::rtl::OUString const & rLibName, ::rtl::OUString const & rPath,
+    ::rtl::OUString const & rImplName,
+    ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory > const & xMgr,
+    ::com::sun::star::uno::Reference< ::com::sun::star::registry::XRegistryKey > const & xKey )
+    SAL_THROW( (::com::sun::star::loader::CannotActivateFactoryException) );
+
+/** Loads a shared library component and gets the factory out of it.  You can give either a
+    fully qualified libname or single lib name.  The libname need not be pre/postfixed
+    (e.g. xxx.dll).  You can give parameter rPath to force lookup of the library in a specific
+    directory.  The resulting path of the library will be checked against environment variable
+    CPLD_ACCESSPATH if set. An optional 'prefix' parameter is used to determine the symbol
+    name of the entry point in the library.
+
     @param rLibName name of the library
     @param rPath optional path
     @param rImplName implementation to be retrieved from the library
@@ -59,7 +83,7 @@ SAL_CALL loadSharedLibComponentFactory(
     ::rtl::OUString const & rImplName,
     ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory > const & xMgr,
     ::com::sun::star::uno::Reference< ::com::sun::star::registry::XRegistryKey > const & xKey,
-    ::rtl::OUString const & rPrefix = ::rtl::OUString() )
+    ::rtl::OUString const & rPrefix )
     SAL_THROW( (::com::sun::star::loader::CannotActivateFactoryException) );
 
 /** Invokes component_writeInfo() function of specified component library.  You can give either

cppuhelper/qa/propertysetmixin/comp_propertysetmixin.cxx

@@ -416,14 +416,14 @@ cppu::ImplementationEntry entries[] = {
 
 }
 
-extern "C" SAL_DLLPUBLIC_EXPORT void * SAL_CALL component_getFactory(
+extern "C" SAL_DLLPUBLIC_EXPORT void * SAL_CALL mixin_component_getFactory(
     char const * implName, void * serviceManager, void * registryKey)
 {
     return cppu::component_getFactoryHelper(
         implName, serviceManager, registryKey, entries);
 }
 
-extern "C" SAL_DLLPUBLIC_EXPORT void SAL_CALL component_getImplementationEnvironment(
+extern "C" SAL_DLLPUBLIC_EXPORT void SAL_CALL mixin_component_getImplementationEnvironment(
     char const ** envTypeName, uno_Environment **)
 {
     *envTypeName = CPPU_CURRENT_LANGUAGE_BINDING_NAME;

cppuhelper/qa/propertysetmixin/makefile.mk

@@ -66,7 +66,6 @@ DEF1NAME = $(SHL1TARGET)
 
 SHL2TARGET = $(TARGET).uno
 SHL2OBJS = $(SLO)/comp_propertysetmixin.obj
-SHL2VERSIONMAP = $(SOLARENV)/src/component.map
 SHL2STDLIBS = $(CPPULIB) $(CPPUHELPERLIB) $(SALLIB)
 SHL2IMPLIB = i$(SHL2TARGET)
 SH21RPATH = NONE

cppuhelper/qa/propertysetmixin/qa_propertysetmixin.cpp.component

@@ -26,7 +26,7 @@
 *
 **********************************************************************-->
 
-<component loader="com.sun.star.loader.SharedLibrary"
+<component loader="com.sun.star.loader.SharedLibrary" prefix="mixin"
     xmlns="http://openoffice.org/2010/uno-components">
   <implementation name="test.cppuhelper.propertysetmixin.comp.CppSupplier">
     <service name="test.cppuhelper.propertysetmixin.CppSupplier"/>

cppuhelper/source/shlib.cxx

@@ -345,6 +345,17 @@ extern "C" {static void s_getFactory(va_list * pParam)
     *ppSSF = pSym(pImplName->getStr(), pSMgr, pKey);
 }}
 
+/* For backwards compatibility */
+Reference< XInterface > SAL_CALL loadSharedLibComponentFactory(
+    OUString const & rLibName, OUString const & rPath,
+    OUString const & rImplName,
+    Reference< lang::XMultiServiceFactory > const & xMgr,
+    Reference< registry::XRegistryKey > const & xKey )
+    SAL_THROW( (loader::CannotActivateFactoryException) )
+{
+    return loadSharedLibComponentFactory( rLibName, rPath, rImplName, xMgr, xKey, rtl::OUString() );
+}
+
 Reference< XInterface > SAL_CALL loadSharedLibComponentFactory(
     OUString const & rLibName, OUString const & rPath,
     OUString const & rImplName,

stoc/source/loader/dllcomponentloader.cxx

@@ -202,8 +202,26 @@ Reference<XInterface> SAL_CALL DllComponentLoader::activate(
 
     throw(CannotActivateFactoryException, RuntimeException)
 {
+    rtl::OUString aPrefix;
+    if( xKey.is() )
+    {
+        Reference<XRegistryKey > xActivatorKey = xKey->openKey(
+                rtl::OUString( RTL_CONSTASCII_USTRINGPARAM("/UNO/ACTIVATOR") ) );
+        if (xActivatorKey.is() && xActivatorKey->getValueType() == RegistryValueType_ASCII )
+        {
+            Reference<XRegistryKey > xPrefixKey = xActivatorKey->openKey(
+                rtl::OUString( RTL_CONSTASCII_USTRINGPARAM("/UNO/PREFIX") ) );
+            if( xPrefixKey.is() && xPrefixKey->getValueType() == RegistryValueType_ASCII )
+            {
+                aPrefix = xPrefixKey->getAsciiValue();
+                if( aPrefix.getLength() != 0 )
+                    aPrefix = aPrefix + OUSTR("_");
+            }
+        }
+    }
+
     return loadSharedLibComponentFactory(
-        expand_url( rLibName ), OUString(), rImplName, m_xSMgr, xKey );
+        expand_url( rLibName ), OUString(), rImplName, m_xSMgr, xKey, aPrefix );
 }