temp linking quick fix

[wxWidgets.git] / src / common / dynlib.cpp

diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp
index bd6cbe525016d3fb27c6efba51373282c39aa6ff..91981e3061c0e741e145e75f1b6a10a31f9d0c4d 100644 (file)
--- a/src/common/dynlib.cpp
+++ b/src/common/dynlib.cpp
@@ -27,45 +27,89 @@
   #pragma hdrstop
 #endif
 
   #pragma hdrstop
 #endif
 

-#if wxUSE_DYNLIB_CLASS
+#if wxUSE_DYNLIB_CLASS && !wxUSE_DYNAMIC_LOADER
+
+#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/dynlib.h"
 #include "wx/filefn.h"
 #include "wx/intl.h"
 #include "wx/log.h"

-#include "wx/tokenzr.h"
+
+#if defined(__WXMAC__)
+    #include "wx/mac/private.h"
+#endif

 
 // ----------------------------------------------------------------------------
 // conditional compilation
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // conditional compilation
 // ----------------------------------------------------------------------------
 

-#if defined(HAVE_DLOPEN)
-#   define wxDllOpen(lib)                dlopen(lib.fn_str(), RTLD_NOW/*RTLD_LAZY*/)
-#   define wxDllGetSymbol(handle, name)  dlsym(handle, name.mb_str())
+#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                    dlclose
 #elif defined(HAVE_SHL_LOAD)
 #   define wxDllOpen(lib)                shl_load(lib.fn_str(), BIND_DEFERRED, 0)

-#   define wxDllClose      shl_unload
+#   define wxDllClose                    shl_unload

 
 

-    static inline void *wxDllGetSymbol(shl_t handle, const wxString& name)
-    {
-        void *sym;
-        if ( shl_findsym(&handle, name.mb_str(), TYPE_UNDEFINED, &sym) == 0 )
-            return sym;
-        else
-            return (void *)0;
-    }
-#elif defined(__WINDOWS__)
-#   include <windows.h>
+static inline void *wxDllGetSymbol(shl_t handle, const wxString& name)
+{
+    void *sym;
+    if ( shl_findsym(&handle, name.mb_str(), TYPE_UNDEFINED, &sym) == 0 )
+        return sym;
+    else
+        return 0;
+}

 
 

+#elif defined(__DARWIN__)
+/* Porting notes:
+ *   The dlopen port is a port from dl_next.xs by Anno Siegel.
+ *   dl_next.xs is itself a port from dl_dlopen.xs by Paul Marquess.
+ *   The method used here is just to supply the sun style dlopen etc.
+ *   functions in terms of Darwin NS*.
+ */
+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__)

     // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary
 #   ifdef __WIN32__
     // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary
 #   ifdef __WIN32__

-#      define wxDllOpen(lib)                  ::LoadLibraryEx(lib, 0, 0)
+#ifdef _UNICODE
+#      define wxDllOpen(lib)                  ::LoadLibraryExW(lib, 0, 0)
+#else
+#      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   // Win16
 #      define wxDllOpen(lib)                  ::LoadLibrary(lib)
 #   endif  // Win32/16
 #   define wxDllGetSymbol(handle, name)    ::GetProcAddress(handle, name)
 #   define wxDllClose                      ::FreeLibrary

+#elif defined(__WXMAC__)
+#   define wxDllClose(handle)               CloseConnection(&((CFragConnectionID)handle))

 #else
 #   error "Don't know how to load shared libraries on this platform."
 #endif // OS
 #else
 #   error "Don't know how to load shared libraries on this platform."
 #endif // OS


@@ -76,34 +120,20 @@
 
 wxLibraries wxTheLibraries;
 
 
 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)
 {
 
 // 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__)
-#   if defined(__HPUX__)
-        fullname << ".sl";
-#   else       //__HPUX__
-        fullname << ".so";
-#   endif      //__HPUX__
-#elif defined(__WINDOWS__)
-    fullname << ".dll";
-#endif
+    wxString fullname;
+    fullname << basename << wxDllLoader::GetDllExt();

 
     return fullname;
 }
 
 
     return fullname;
 }
 

-// ============================================================================
-// implementation
-// ============================================================================
-
-

 // ---------------------------------------------------------------------------
 // wxLibrary (one instance per dynamic library)
 // ---------------------------------------------------------------------------
 // ---------------------------------------------------------------------------
 // wxLibrary (one instance per dynamic library)
 // ---------------------------------------------------------------------------


@@ -148,7 +178,7 @@ void wxLibrary::PrepareClasses(wxClassInfo *first)
     {
         if (info->m_className)
             classTable.Put(info->m_className, (wxObject *)info);
     {
         if (info->m_className)
             classTable.Put(info->m_className, (wxObject *)info);

-        info = info->GetNext();
+        info = info->m_next;

     }
 
     // Set base pointers for each wxClassInfo
     }
 
     // Set base pointers for each wxClassInfo


@@ -172,89 +202,153 @@ void *wxLibrary::GetSymbol(const wxString& symbname)
 // wxDllLoader
 // ---------------------------------------------------------------------------
 
 // wxDllLoader
 // ---------------------------------------------------------------------------
 

+
+#if defined(__WINDOWS__) || defined(__WXPM__) || defined(__EMX__)
+const wxString wxDllLoader::ms_dllext( _T(".dll") );
+#elif defined(__UNIX__)
+#if defined(__HPUX__)
+const wxString wxDllLoader::ms_dllext( _T(".sl") );
+#else
+const wxString wxDllLoader::ms_dllext( _T(".so") );
+#endif
+#elif defined(__WXMAC__)
+const wxString wxDllLoader::ms_dllext( _T("") );
+#endif
+

 /* static */
 /* static */

-wxDllType
-wxDllLoader::GetProgramHandle(void)
+wxDllType wxDllLoader::GetProgramHandle()

 {
 {

-#ifdef __UNIX__
-    return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/);
+#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
 #else

-    wxFAIL_MSG(_("This method is not implemented under Windows"));
-
-    return 0;
-#endif   
+   wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2"));
+   return 0;
+#endif

 }
 
 }
 

-

 /* static */
 /* static */

-wxDllType
-wxDllLoader::LoadLibrary(const wxString & lib_name, bool *success)
+wxDllType wxDllLoader::LoadLibrary(const wxString & libname, bool *success)

 {
 {

-   wxASSERT(success);
-   
-   wxDllType handle;
+    wxDllType   handle;
+    bool        failed = FALSE;
+
+#if defined(__WXMAC__) && !defined(__UNIX__)
+    FSSpec      myFSSpec;
+    Ptr         myMainAddr;
+    Str255      myErrName;
+
+    wxMacFilename2FSSpec( libname , &myFSSpec );
+
+    if( GetDiskFragment( &myFSSpec,
+                         0,
+                         kCFragGoesToEOF,
+                         "\p",
+                         kPrivateCFragCopy,
+                         &((CFragConnectionID)handle),
+                         &myMainAddr,
+                         myErrName ) != noErr )
+    {
+        p2cstr( myErrName );
+        wxLogSysError( _("Failed to load shared library '%s' Error '%s'"),
+                       libname.c_str(),
+                       (char*)myErrName );
+        handle = 0;
+        failed = TRUE;
+    }

 
 

-#if defined(__WXMAC__)
-   FSSpec myFSSpec ;
-   Ptr myMainAddr ;
-   Str255      myErrName ;
-   
-   wxMacPathToFSSpec( lib_name , &myFSSpec ) ;
-   if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr ,
-                        myErrName ) != noErr )
-   {
-      p2cstr( myErrName ) ;
-      wxASSERT_MSG( 1 , (char*)myErrName ) ;
-      return NULL ;
-   }
-#else // !Mac
-   handle = wxDllOpen(lib_name);
-#endif // OS
+#elif defined(__WXPM__) || defined(__EMX__)
+    char        zError[256] = "";
+    wxDllOpen(zError, libname, handle);

 
 

-   if ( !handle )
-   {
-      wxLogSysError(_("Failed to load shared library '%s'"),
-                    lib_name.c_str());
-      *success = FALSE;
-      return NULL;
-   }
-   *success = TRUE;
-   return handle;
+#else
+    handle = wxDllOpen(libname);
+
+#endif
+
+    if ( !handle )
+    {
+        wxString msg(_("Failed to load shared library '%s'"));
+
+#ifdef HAVE_DLERROR
+        const wxChar *err = dlerror();
+        if( err )
+        {
+            failed = TRUE;
+            wxLogError( msg, err );
+        }
+#else
+        failed = TRUE;
+        wxLogSysError( msg, libname.c_str() );
+#endif
+    }
+
+    if ( success )
+        *success = !failed;
+
+    return handle;

 }
 
 
 /* static */
 }
 
 
 /* static */

-void
-wxDllLoader::UnloadLibrary(wxDllType handle)
+void wxDllLoader::UnloadLibrary(wxDllType handle)

 {
    wxDllClose(handle);
 }
 
 /* static */
 {
    wxDllClose(handle);
 }
 
 /* static */

-void *
-wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name)
+void *wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name, bool *success)

 {
 {

-   void *symbol = NULL;    // return value
-
-#if defined( __WXMAC__ )
-   Ptr symAddress ;
-   CFragSymbolClass symClass ;
-   Str255      symName ;
-   
-   strcpy( (char*) symName , name ) ;
-   c2pstr( (char*) symName ) ;
-   
-   if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr )
-      symbol = (void *)symAddress ; 
+    bool    failed = FALSE;
+    void    *symbol = 0;
+
+#if defined(__WXMAC__) && !defined(__UNIX__)
+    Ptr                 symAddress;
+    CFragSymbolClass    symClass;
+    Str255              symName;
+
+#if TARGET_CARBON
+    c2pstrcpy( (StringPtr) symName, name );

 #else
 #else

-    symbol = wxDllGetSymbol(dllHandle, name);
+    strcpy( (char *) symName, name );
+    c2pstr( (char *) symName );
+#endif
+    if( FindSymbol( ((CFragConnectionID)dllHandle), symName, &symAddress, &symClass ) == noErr )
+        symbol = (void *)symAddress;
+
+#elif defined(__WXPM__) || defined(__EMX__)
+    wxDllGetSymbol(dllHandle, symbol);
+
+#else
+    // mb_str() is necessary in Unicode build
+    symbol = wxDllGetSymbol(dllHandle, name.mb_str());
+

 #endif
 
     if ( !symbol )
     {
 #endif
 
     if ( !symbol )
     {

-       wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"),
-                     name.c_str());
+        wxString msg(_("wxDllLoader failed to GetSymbol '%s'"));
+
+#ifdef HAVE_DLERROR
+        const wxChar *err = dlerror();
+        if( err )
+        {
+            failed = TRUE;
+            wxLogError( msg, err );
+        }
+#else
+        failed = TRUE;
+        wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"),
+                      name.c_str());
+#endif

     }
     }

+
+    if( success )
+        *success = !failed;
+

     return symbol;
 }
 
     return symbol;
 }
 


@@ -262,7 +356,7 @@ wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name)
 // wxLibraries (only one instance should normally exist)
 // ---------------------------------------------------------------------------
 
 // wxLibraries (only one instance should normally exist)
 // ---------------------------------------------------------------------------
 

-wxLibraries::wxLibraries()
+wxLibraries::wxLibraries():m_loaded(wxKEY_STRING)

 {
 }
 
 {
 }
 


@@ -280,54 +374,26 @@ wxLibraries::~wxLibraries()
 
 wxLibrary *wxLibraries::LoadLibrary(const wxString& name)
 {
 
 wxLibrary *wxLibraries::LoadLibrary(const wxString& name)
 {

-    wxNode *node;
-    wxLibrary *lib;
+    wxLibrary   *lib;

     wxClassInfo *old_sm_first;
     wxClassInfo *old_sm_first;

+    wxNode      *node = m_loaded.Find(name.GetData());

 
 

-    if ( (node = m_loaded.Find(name.GetData())) )
+    if (node != NULL)

         return ((wxLibrary *)node->Data());
 
     // If DLL shares data, this is necessary.
     old_sm_first = wxClassInfo::sm_first;
     wxClassInfo::sm_first = NULL;
 
         return ((wxLibrary *)node->Data());
 
     // If DLL shares data, this is necessary.
     old_sm_first = wxClassInfo::sm_first;
     wxClassInfo::sm_first = NULL;
 

-    wxString lib_name = ConstructLibraryName(name);
-
-/*
-  Unix automatically builds that library name, at least for dlopen()
-*/
-#if 0
-#if defined(__UNIX__)
-    // 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 << ':' << envLibPath;
-    wxStringTokenizer tokenizer(libPath, _T(':'));
-    while ( tokenizer.HasMoreToken() )
-    {
-        wxString fullname(tokenizer.NextToken());
-
-        fullname << '/' << lib_name;
-        if ( wxFileExists(fullname) )
-        {
-            lib_name = fullname;
-
-            // found the library
-            break;
-        }
-    }
-    //else: not found in the path, leave the name as is (secutiry risk?)
-
-#endif // __UNIX__
-#endif
+    wxString libname = ConstructLibraryName(name);

 
     bool success = FALSE;
 
     bool success = FALSE;

-    wxDllType handle = wxDllLoader::LoadLibrary(lib_name, &success);
+    wxDllType handle = wxDllLoader::LoadLibrary(libname, &success);

     if(success)
     {
        lib = new wxLibrary(handle);
        wxClassInfo::sm_first = old_sm_first;
     if(success)
     {
        lib = new wxLibrary(handle);
        wxClassInfo::sm_first = old_sm_first;

+

        m_loaded.Append(name.GetData(), lib);
     }
     else
        m_loaded.Append(name.GetData(), lib);
     }
     else


@@ -350,4 +416,85 @@ wxObject *wxLibraries::CreateObject(const wxString& path)
     return NULL;
 }
 
     return NULL;
 }
 

-#endif // wxUSE_DYNLIB_CLASS
+#endif // wxUSE_DYNLIB_CLASS && !wxUSE_DYNAMIC_LOADER
+
+#if defined(__DARWIN__) && (wxUSE_DYNLIB_CLASS || wxUSE_DYNAMIC_LOADER)
+// ---------------------------------------------------------------------------
+// For Darwin/Mac OS X
+//   supply the sun style dlopen functions in terms of Darwin NS*
+// ---------------------------------------------------------------------------
+
+#include <stdio.h>
+#include <mach-o/dyld.h>
+
+static char dl_last_error[1024];
+
+static
+void TranslateError(const char *path, int number)
+{
+    unsigned int index;
+    static char *OFIErrorStrings[] =
+    {
+       "%s(%d): Object Image Load Failure\n",
+       "%s(%d): Object Image Load Success\n",
+       "%s(%d): Not an recognisable object file\n",
+       "%s(%d): No valid architecture\n",
+       "%s(%d): Object image has an invalid format\n",
+       "%s(%d): Invalid access (permissions?)\n",
+       "%s(%d): Unknown error code from NSCreateObjectFileImageFromFile\n",
+    };
+#define NUM_OFI_ERRORS (sizeof(OFIErrorStrings) / sizeof(OFIErrorStrings[0]))
+
+    index = number;
+    if (index > NUM_OFI_ERRORS - 1) {
+        index = NUM_OFI_ERRORS - 1;
+    }
+    sprintf(dl_last_error, OFIErrorStrings[index], path, number);
+}
+
+const char *dlerror()
+{
+    return dl_last_error;
+}
+
+void *dlopen(const char *path, int mode /* mode is ignored */)
+{
+    int dyld_result;
+    NSObjectFileImage ofile;
+    NSModule handle = NULL;
+
+    dyld_result = NSCreateObjectFileImageFromFile(path, &ofile);
+    if (dyld_result != NSObjectFileImageSuccess)
+    {
+       TranslateError(path, dyld_result);
+    }
+    else
+    {
+       // NSLinkModule will cause the run to abort on any link error's
+       // not very friendly but the error recovery functionality is limited.
+       handle = NSLinkModule(ofile, path, NSLINKMODULE_OPTION_BINDNOW);
+    }
+
+    return handle;
+}
+
+int dlclose(void *handle)
+{
+    NSUnLinkModule( handle, NSUNLINKMODULE_OPTION_NONE);
+    return 0;
+}
+
+void *dlsym(void *handle, const char *symbol)
+{
+    void *addr;
+
+    if (NSIsSymbolNameDefined(symbol)) {
+       addr = NSAddressOfSymbol(NSLookupAndBindSymbol(symbol));
+    }
+    else {
+       addr = NULL;
+    }
+    return addr;
+}
+
+#endif // defined(__DARWIN__) && (wxUSE_DYNLIB_CLASS || wxUSE_DYNAMIC_LOADER)