// ----------------------------------------------------------------------------
#ifdef __GNUG__
- #pragma implementation "dynlib.h"
+# pragma implementation "dynlib.h"
#endif
#include "wx/wxprec.h"
-#ifdef __BORLANDC__
+#ifdef __BORLANDC__
#pragma hdrstop
-#endif //__BORLANDC__
+#endif
+
+#if wxUSE_DYNLIB_CLASS
+
+#if defined(__WINDOWS__)
+ #include "wx/msw/private.h"
+#endif
#include "wx/dynlib.h"
#include "wx/filefn.h"
#include "wx/intl.h"
#include "wx/log.h"
+#include "wx/tokenzr.h"
// ----------------------------------------------------------------------------
// conditional compilation
// ----------------------------------------------------------------------------
-#if defined(HAVE_DLOPEN)
- #define wxDllOpen(lib) dlopen(lib, RTLD_LAZY)
- #define wxDllGetSymbol(handle, name) dlsym(handle, (char *)name)
- #define wxDllClose dlclose
-#elif defined(HAVE_SHLLOAD)
- #define wxDllOpen(lib) shl_open(lib, BIND_DEFERRED, 0)
- #define wxDllClose shl_unload
+#if defined(__WXPM__) || defined(__EMX__)
+# define INCL_DOS
+# include <os2.h>
+# define wxDllOpen(error, lib, handle) DosLoadModule(error, sizeof(error), lib, &handle)
+# define wxDllGetSymbol(handle, modaddr) DosQueryProcAddr(handle, 1L, NULL, (PFN*)modaddr)
+# define wxDllClose(handle) DosFreeModule(handle)
+#elif defined(HAVE_DLOPEN)
+ // note about dlopen() flags: we use RTLD_NOW to have more Windows-like
+ // behaviour (Win won't let you load a library with missing symbols) and
+ // RTLD_GLOBAL because it is needed sometimes and probably doesn't hurt
+ // otherwise. On True64-Unix RTLD_GLOBAL is not allowed and on VMS the
+ // second argument on dlopen is ignored.
+#ifdef __VMS
+# define wxDllOpen(lib) dlopen(lib.fn_str(), 0 )
+#elif defined( __osf__ )
+# define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_LAZY )
+#else
+# define wxDllOpen(lib) dlopen(lib.fn_str(), RTLD_LAZY | RTLD_GLOBAL)
+#endif
+#define wxDllGetSymbol(handle, name) dlsym(handle, name)
+# define wxDllClose dlclose
+#elif defined(HAVE_SHL_LOAD)
+# define wxDllOpen(lib) shl_load(lib.fn_str(), BIND_DEFERRED, 0)
+# define wxDllClose shl_unload
- static inline void *wxDllGetSymbol(shl_t *handle, const char *name)
+ static inline void *wxDllGetSymbol(shl_t handle, const wxString& name)
{
void *sym;
- if ( shl_findsym(handle, name, TYPE_UNDEFINED, &sym) == 0 )
+ if ( shl_findsym(&handle, name.mb_str(), TYPE_UNDEFINED, &sym) == 0 )
return sym;
else
return (void *)0;
}
+#elif defined(__APPLE__) && defined(__UNIX__)
+void *dlopen(const char *path, int mode /* mode is ignored */);
+void *dlsym(void *handle, const char *symbol);
+int dlclose(void *handle);
+const char *dlerror(void);
+
+# define wxDllOpen(lib) dlopen(lib.fn_str(), 0)
+# define wxDllGetSymbol(handle, name) dlsym(handle, name)
+# define wxDllClose dlclose
#elif defined(__WINDOWS__)
- #define wxDllOpen(lib) ::LoadLibrary(lib)
- #define wxDllGetSymbol(handle, name) ::GetProcAddress(handle, name)
- #define wxDllClose ::FreeLibrary
+ // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary
+# ifdef __WIN32__
+#ifdef _UNICODE
+# define wxDllOpen(lib) ::LoadLibraryExW(lib, 0, 0)
#else
- #error "Don't know how to load shared libraries on this platform."
+# define wxDllOpen(lib) ::LoadLibraryExA(lib, 0, 0)
+#endif
+# else // Win16
+# define wxDllOpen(lib) ::LoadLibrary(lib)
+# endif // Win32/16
+# define wxDllGetSymbol(handle, name) ::GetProcAddress(handle, name)
+# define wxDllClose ::FreeLibrary
+#else
+# error "Don't know how to load shared libraries on this platform."
#endif // OS
// ---------------------------------------------------------------------------
wxLibraries wxTheLibraries;
-// ----------------------------------------------------------------------------
-// private functions
-// ----------------------------------------------------------------------------
+// ============================================================================
+// implementation
+// ============================================================================
// construct the full name from the base shared object name: adds a .dll
// suffix under Windows or .so under Unix
static wxString ConstructLibraryName(const wxString& basename)
{
- wxString fullname(basename);
-
-#if defined(__UNIX__)
- fullname << ".so";
-#elif defined(__WINDOWS__)
- fullname << ".dll";
-#endif
+ wxString fullname;
+ fullname << basename << wxDllLoader::GetDllExt();
return fullname;
}
-// ============================================================================
-// implementation
-// ============================================================================
-
// ---------------------------------------------------------------------------
// wxLibrary (one instance per dynamic library)
// ---------------------------------------------------------------------------
{
if (info->m_className)
classTable.Put(info->m_className, (wxObject *)info);
- info = info->GetNext();
+ info = (wxClassInfo *)info->GetNext();
}
// Set base pointers for each wxClassInfo
}
void *wxLibrary::GetSymbol(const wxString& symbname)
+{
+ return wxDllLoader::GetSymbol(m_handle, symbname);
+}
+
+// ---------------------------------------------------------------------------
+// wxDllLoader
+// ---------------------------------------------------------------------------
+
+/* static */
+wxString wxDllLoader::GetDllExt()
+{
+ wxString ext;
+
+#if defined(__WINDOWS__) || defined(__WXPM__) || defined(__EMX__)
+ ext = _T(".dll");
+#elif defined(__UNIX__)
+# if defined(__HPUX__)
+ ext = _T(".sl");
+# else //__HPUX__
+ ext = _T(".so");
+# endif //__HPUX__
+#endif
+
+ return ext;
+}
+
+/* static */
+wxDllType
+wxDllLoader::GetProgramHandle(void)
+{
+#if defined( HAVE_DLOPEN ) && !defined(__EMX__)
+ // optain handle for main program
+ return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/);
+#elif defined (HAVE_SHL_LOAD)
+ // shl_findsymbol with NULL handle looks up in main program
+ return 0;
+#else
+ wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2"));
+ return 0;
+#endif
+}
+
+/* static */
+wxDllType
+wxDllLoader::LoadLibrary(const wxString & libname, bool *success)
+{
+ wxDllType handle;
+
+#if defined(__WXMAC__) && !defined(__UNIX__)
+ FSSpec myFSSpec ;
+ Ptr myMainAddr ;
+ Str255 myErrName ;
+
+ wxMacPathToFSSpec( libname , &myFSSpec ) ;
+ if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr ,
+ myErrName ) != noErr )
+ {
+ p2cstr( myErrName ) ;
+ wxASSERT_MSG( 1 , (char*)myErrName ) ;
+ return NULL ;
+ }
+#elif defined(__WXPM__) || defined(__EMX__)
+ char zError[256] = "";
+ wxDllOpen(zError, libname, handle);
+#else // !Mac
+ handle = wxDllOpen(libname);
+#endif // OS
+
+ if ( !handle )
+ {
+ wxString msg(_("Failed to load shared library '%s'"));
+
+#ifdef HAVE_DLERROR
+ const char *errmsg = dlerror();
+ if ( errmsg )
+ {
+ // the error string format is "libname: ...", but we already have
+ // libname, so cut it off
+ const char *p = strchr(errmsg, ':');
+ if ( p )
+ {
+ if ( *++p == ' ' )
+ p++;
+ }
+ else
+ {
+ p = errmsg;
+ }
+
+ msg += _T(" (%s)");
+ wxLogError(msg, libname.c_str(), p);
+ }
+ else
+#endif // HAVE_DLERROR
+ {
+ wxLogSysError(msg, libname.c_str());
+ }
+ }
+
+ if ( success )
+ {
+ *success = handle != 0;
+ }
+
+ return handle;
+}
+
+
+/* static */
+void
+wxDllLoader::UnloadLibrary(wxDllType handle)
+{
+ wxDllClose(handle);
+}
+
+/* static */
+void *
+wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name)
{
void *symbol = NULL; // return value
-#if defined( __WXMAC__ )
+#if defined(__WXMAC__) && !defined(__UNIX__)
Ptr symAddress ;
CFragSymbolClass symClass ;
- Str255 symName ;
+ Str255 symName ;
- strcpy( (char*) symName , symbname ) ;
- c2pstr( (char*) symName ) ;
+#if TARGET_CARBON
+ c2pstrcpy( (StringPtr) symName , name ) ;
+#else
+ strcpy( (char *) symName , name ) ;
+ c2pstr( (char *) symName ) ;
+#endif
- if ( FindSymbol( m_handle , symName , &symAddress , &symClass ) == noErr )
- {
- symbol = (void *)symAddress ;
- }
+ if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr )
+ symbol = (void *)symAddress ;
+#elif defined( __WXPM__ ) || defined(__EMX__)
+ wxDllGetSymbol(dllHandle, symbol);
#else
- // VZ: hmm... why is WXSTRINGCAST needed? if it's really modified, we
- // should make a copy of it
- symbol = wxDllGetSymbol(m_handle, WXSTRINGCAST symbname);
+ // mb_str() is necessary in Unicode build
+ symbol = wxDllGetSymbol(dllHandle, name.mb_str());
#endif
if ( !symbol )
{
wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"),
- symbname.c_str());
+ name.c_str());
}
-
return symbol;
}
// wxLibraries (only one instance should normally exist)
// ---------------------------------------------------------------------------
-wxLibraries::wxLibraries()
+wxLibraries::wxLibraries():m_loaded(wxKEY_STRING)
{
}
wxLibrary *lib;
wxClassInfo *old_sm_first;
- if ( (node = m_loaded.Find(name.GetData())) )
+#if defined(__VISAGECPP__)
+ node = m_loaded.Find(name.GetData());
+ if (node != NULL)
return ((wxLibrary *)node->Data());
-
+#else // !OS/2
+ if ( (node = m_loaded.Find(name.GetData())) != NULL)
+ return ((wxLibrary *)node->Data());
+#endif
// If DLL shares data, this is necessary.
old_sm_first = wxClassInfo::sm_first;
wxClassInfo::sm_first = NULL;
- wxString lib_name = ConstructLibraryName(name);
+ wxString libname = ConstructLibraryName(name);
+/*
+ Unix automatically builds that library name, at least for dlopen()
+*/
+#if 0
#if defined(__UNIX__)
- // TODO use LD_LIBRARY_PATH!
- lib_name.Prepend("/lib");
-#endif // __UNIX__
-
- wxDllType handle ;
-
-#if defined(__WXMAC__)
- FSSpec myFSSpec ;
- Ptr myMainAddr ;
- Str255 myErrName ;
-
- wxMacPathToFSSpec( lib_name , &myFSSpec ) ;
- if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr ,
- myErrName ) != noErr )
+ // found the first file in LD_LIBRARY_PATH with this name
+ wxString libPath("/lib:/usr/lib"); // system path first
+ const char *envLibPath = getenv("LD_LIBRARY_PATH");
+ if ( envLibPath )
+ libPath << wxT(':') << envLibPath;
+ wxStringTokenizer tokenizer(libPath, wxT(':'));
+ while ( tokenizer.HasMoreToken() )
{
- p2cstr( myErrName ) ;
- wxASSERT_MSG( 1 , (char*)myErrName ) ;
- return NULL ;
- }
-#else // !Mac
- handle = wxDllOpen(lib_name);
-#endif // OS
+ wxString fullname(tokenizer.NextToken());
- if ( !handle )
- {
- wxLogSysError(_("Failed to load shared library '%s'"),
- lib_name.c_str());
+ fullname << wxT('/') << libname;
+ if ( wxFileExists(fullname) )
+ {
+ libname = fullname;
- return NULL;
+ // found the library
+ break;
+ }
}
+ //else: not found in the path, leave the name as is (secutiry risk?)
- lib = new wxLibrary(handle);
-
- wxClassInfo::sm_first = old_sm_first;
-
- m_loaded.Append(name.GetData(), lib);
+#endif // __UNIX__
+#endif
+ bool success = FALSE;
+ wxDllType handle = wxDllLoader::LoadLibrary(libname, &success);
+ if(success)
+ {
+ lib = new wxLibrary(handle);
+ wxClassInfo::sm_first = old_sm_first;
+ m_loaded.Append(name.GetData(), lib);
+ }
+ else
+ lib = NULL;
return lib;
}
}
return NULL;
}
+
+#endif // wxUSE_DYNLIB_CLASS
projects / wxWidgets.git / blobdiff