fixed memory allocation code of wxStreamBuffer to not realloc() new[]ed memory any...

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

diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp
index 876f60c07d21b1471ee27f16c6a0f2ab793b81c9..3aa8cc8758618e03840a2f0bb3b766f6ca2986a1 100644 (file)
--- a/src/common/dynlib.cpp
+++ b/src/common/dynlib.cpp
@@ -22,15 +22,17 @@
 #endif
 
 #include  "wx/wxprec.h"
 #endif
 
 #include  "wx/wxprec.h"

-#if defined(__WINDOWS__)
-#include "wx/msw/private.h"
-#endif

 
 #ifdef __BORLANDC__
   #pragma hdrstop
 #endif
 
 #ifdef __BORLANDC__
   #pragma hdrstop
 #endif

+

 #if wxUSE_DYNLIB_CLASS
 
 #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/dynlib.h"
 #include "wx/filefn.h"
 #include "wx/intl.h"


@@ -41,9 +43,15 @@
 // conditional compilation
 // ----------------------------------------------------------------------------
 
 // conditional compilation
 // ----------------------------------------------------------------------------
 

-#if defined(HAVE_DLOPEN)
+#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)

 #   define wxDllOpen(lib)                dlopen(lib.fn_str(), RTLD_NOW/*RTLD_LAZY*/)
 #   define wxDllOpen(lib)                dlopen(lib.fn_str(), RTLD_NOW/*RTLD_LAZY*/)

-#   define wxDllGetSymbol(handle, name)  dlsym(handle, name.mb_str())
+#   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)


@@ -60,20 +68,16 @@
 #elif defined(__WINDOWS__)
     // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary
 #   ifdef __WIN32__
 #elif defined(__WINDOWS__)
     // 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(__OS2__)
-
-#  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)

 #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


@@ -84,34 +88,20 @@
 
 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__) || defined(__OS2__)
-    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)
 // ---------------------------------------------------------------------------


@@ -180,11 +170,29 @@ void *wxLibrary::GetSymbol(const wxString& symbname)
 // wxDllLoader
 // ---------------------------------------------------------------------------
 
 // 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)
 {
 /* static */
 wxDllType
 wxDllLoader::GetProgramHandle(void)
 {

-#if defined( HAVE_DLOPEN )
+#if defined( HAVE_DLOPEN ) && !defined(__EMX__)

    // optain handle for main program
    return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/); 
 #elif defined (HAVE_SHL_LOAD)
    // optain handle for main program
    return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/); 
 #elif defined (HAVE_SHL_LOAD)


@@ -204,8 +212,8 @@ wxDllLoader::LoadLibrary(const wxString & libname, bool *success)
 
 #if defined(__WXMAC__)
     FSSpec myFSSpec ;
 
 #if defined(__WXMAC__)
     FSSpec myFSSpec ;

-    Ptr        myMainAddr ;
-    Str255     myErrName ;
+    Ptr myMainAddr ;
+    Str255 myErrName ;

 
     wxMacPathToFSSpec( libname , &myFSSpec ) ;
     if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr ,
 
     wxMacPathToFSSpec( libname , &myFSSpec ) ;
     if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr ,


@@ -215,8 +223,8 @@ wxDllLoader::LoadLibrary(const wxString & libname, bool *success)
         wxASSERT_MSG( 1 , (char*)myErrName ) ;
         return NULL ;
     }
         wxASSERT_MSG( 1 , (char*)myErrName ) ;
         return NULL ;
     }

-#elif defined(__OS2__)
-    char                            zError[256] = "";
+#elif defined(__WXPM__) || defined(__EMX__)
+    char zError[256] = "";

     wxDllOpen(zError, libname, handle);
 #else // !Mac
     handle = wxDllOpen(libname);
     wxDllOpen(zError, libname, handle);
 #else // !Mac
     handle = wxDllOpen(libname);


@@ -224,7 +232,33 @@ wxDllLoader::LoadLibrary(const wxString & libname, bool *success)
 
     if ( !handle )
     {
 
     if ( !handle )
     {

-        wxLogSysError(_("Failed to load shared library '%s'"), libname.c_str());
+        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 )
     }
 
     if ( success )


@@ -252,17 +286,18 @@ wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name)
 #if defined( __WXMAC__ )
     Ptr symAddress ;
     CFragSymbolClass symClass ;
 #if defined( __WXMAC__ )
     Ptr symAddress ;
     CFragSymbolClass symClass ;

-    Str255     symName ;
+    Str255 symName ;

 
     strcpy( (char*) symName , name ) ;
     c2pstr( (char*) symName ) ;
 
     if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr )
         symbol = (void *)symAddress ;
 
     strcpy( (char*) symName , name ) ;
     c2pstr( (char*) symName ) ;
 
     if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr )
         symbol = (void *)symAddress ;

-#elif defined( __OS2__ )
+#elif defined( __WXPM__ ) || defined(__EMX__)

     wxDllGetSymbol(dllHandle, symbol);
 #else
     wxDllGetSymbol(dllHandle, symbol);
 #else

-    symbol = wxDllGetSymbol(dllHandle, name);
+    // mb_str() is necessary in Unicode build
+    symbol = wxDllGetSymbol(dllHandle, name.mb_str());

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