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

diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp
index 447fb80a87e7026eded1bc30861bd8ae218a354f..69d5bc700ed9df3426c6015d8d6dc00b0c07f4f1 100644 (file)
--- a/src/common/dynlib.cpp
+++ b/src/common/dynlib.cpp
@@ -1,14 +1,18 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        dynlib.cpp
+// Name:        src/common/dynlib.cpp

 // Purpose:     Dynamic library management
 // Author:      Guilhem Lavaux
 // Modified by:
 // Created:     20/07/98
 // RCS-ID:      $Id$
 // Purpose:     Dynamic library management
 // Author:      Guilhem Lavaux
 // Modified by:
 // Created:     20/07/98
 // RCS-ID:      $Id$

-// Copyright:   (c) Guilhem Lavaux
-// Licence:     wxWindows license
+// Copyright:   (c) 1998 Guilhem Lavaux
+//                  2000-2005 Vadim Zeitlin
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

+//FIXME:  This class isn't really common at all, it should be moved into
+//        platform dependent files (already done for Windows and Unix)
+

 // ============================================================================
 // declarations
 // ============================================================================
 // ============================================================================
 // declarations
 // ============================================================================


@@ -17,283 +21,261 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
-    #pragma implementation "dynlib.h"
-#endif
-

 #include  "wx/wxprec.h"
 
 #include  "wx/wxprec.h"
 

-#ifdef    __BORLANDC__
-  #pragma hdrstop
-#endif  //__BORLANDC__
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif

 
 #if wxUSE_DYNLIB_CLASS
 
 #include "wx/dynlib.h"
 
 #if wxUSE_DYNLIB_CLASS
 
 #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_SHL_LOAD)
-    #define wxDllOpen(lib)                shl_load(lib, BIND_DEFERRED, 0)
-    #define wxDllClose      shl_unload
-
-    static inline void *wxDllGetSymbol(shl_t handle, const char *name)
-    {
-        void *sym;
-        if ( shl_findsym(&handle, name, TYPE_UNDEFINED, &sym) == 0 )
-            return sym;
-        else
-            return (void *)0;
-    }
-#elif defined(__WINDOWS__)
-    #define wxDllOpen(lib)                  ::LoadLibrary(lib)
-    #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
-
-// ---------------------------------------------------------------------------
-// Global variables
-// ---------------------------------------------------------------------------

 
 

-wxLibraries wxTheLibraries;
+#ifndef WX_PRECOMP
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/app.h"
+    #include "wx/utils.h"
+#endif //WX_PRECOMP

 
 

-// ----------------------------------------------------------------------------
-// private functions
-// ----------------------------------------------------------------------------
+#include "wx/filefn.h"
+#include "wx/filename.h"        // for SplitPath()
+#include "wx/platinfo.h"

 
 

-// 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
+#include "wx/arrimpl.cpp"

 
 

-    return fullname;
-}
+WX_DEFINE_USER_EXPORTED_OBJARRAY(wxDynamicLibraryDetailsArray)

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

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

 // ---------------------------------------------------------------------------
 
 // ---------------------------------------------------------------------------
 

-wxLibrary::wxLibrary(wxDllType handle)
-{
-    typedef wxClassInfo *(*t_get_first)(void);
-    t_get_first get_first;
-
-    m_handle = handle;
+#if defined(__WXPM__) || defined(__EMX__)
+    const wxString wxDynamicLibrary::ms_dllext(_T(".dll"));
+#endif

 
 

-    // Some system may use a local heap for library.
-    get_first = (t_get_first)GetSymbol("wxGetClassFirst");
-    // It is a wxWindows DLL.
-    if (get_first)
-        PrepareClasses(get_first());
-}
+// for MSW/Unix it is defined in platform-specific file
+#if !(defined(__WXMSW__) || defined(__UNIX__)) || defined(__EMX__)

 
 

-wxLibrary::~wxLibrary()
+wxDllType wxDynamicLibrary::GetProgramHandle()

 {
 {

-    if ( m_handle )
-    {
-        wxDllClose(m_handle);
-    }
+   wxFAIL_MSG( wxT("GetProgramHandle() is not implemented under this platform"));
+   return 0;

 }
 
 }
 

-wxObject *wxLibrary::CreateObject(const wxString& name)
-{
-    wxClassInfo *info = (wxClassInfo *)classTable.Get(name);
-
-    if (!info)
-        return NULL;
+#endif // __WXMSW__ || __UNIX__

 
 

-    return info->CreateObject();
-}

 
 

-void wxLibrary::PrepareClasses(wxClassInfo *first)
+bool wxDynamicLibrary::Load(const wxString& libnameOrig, int flags)

 {
 {

-    // Index all class infos by their class name
-    wxClassInfo *info = first;
-    while (info)
+    wxASSERT_MSG(m_handle == 0, _T("Library already loaded."));
+
+    // add the proper extension for the DLL ourselves unless told not to
+    wxString libname = libnameOrig;
+    if ( !(flags & wxDL_VERBATIM) )

     {
     {

-        if (info->m_className)
-            classTable.Put(info->m_className, (wxObject *)info);
-        info = info->GetNext();
+        // and also check that the libname doesn't already have it
+        wxString ext;
+        wxFileName::SplitPath(libname, NULL, NULL, &ext);
+        if ( ext.empty() )
+        {
+            libname += GetDllExt();
+        }

     }
 
     }
 

-    // Set base pointers for each wxClassInfo
-    info = first;
-    while (info)
+    // different ways to load a shared library
+    //
+    // FIXME: should go to the platform-specific files!
+#if defined(__WXPM__) || defined(__EMX__)
+    char err[256] = "";
+    DosLoadModule(err, sizeof(err), libname.c_str(), &m_handle);
+#else // this should be the only remaining branch eventually
+    m_handle = RawLoad(libname, flags);
+#endif
+
+    if ( m_handle == 0 && !(flags & wxDL_QUIET) )

     {
     {

-        if (info->GetBaseClassName1())
-            info->m_baseInfo1 = (wxClassInfo *)classTable.Get(info->GetBaseClassName1());
-        if (info->GetBaseClassName2())
-            info->m_baseInfo2 = (wxClassInfo *)classTable.Get(info->GetBaseClassName2());
-        info = info->m_next;
+#ifdef wxHAVE_DYNLIB_ERROR
+        Error();
+#else
+        wxLogSysError(_("Failed to load shared library '%s'"), libname.c_str());
+#endif

     }
     }

+
+    return IsLoaded();

 }
 
 }
 

-void *wxLibrary::GetSymbol(const wxString& symbname)
+// for MSW and Unix this is implemented in the platform-specific file
+//
+// TODO: move the rest to os2/dlpm.cpp and mac/dlmac.cpp!
+#if (!defined(__WXMSW__) && !defined(__UNIX__)) || defined(__EMX__)
+
+/* static */
+void wxDynamicLibrary::Unload(wxDllType handle)

 {
 {

-    void *symbol = NULL;    // return value
+#if defined(__OS2__) || defined(__EMX__)
+    DosFreeModule( handle );
+#else
+    #error  "runtime shared lib support not implemented"
+#endif
+}
+
+#endif // !(__WXMSW__ || __UNIX__)

 
 

-#if defined( __WXMAC__ )
-    Ptr symAddress ;
-    CFragSymbolClass symClass ;
-    Str255     symName ;
+void *wxDynamicLibrary::DoGetSymbol(const wxString &name, bool *success) const
+{
+    wxCHECK_MSG( IsLoaded(), NULL,
+                 _T("Can't load symbol from unloaded library") );

 
 

-    strcpy( (char*) symName , symbname ) ;
-    c2pstr( (char*) symName ) ;
+    void    *symbol = 0;

 
 

-    if ( FindSymbol( m_handle , symName , &symAddress , &symClass ) == noErr )
-    {
-        symbol = (void *)symAddress ; 
-    }
+    wxUnusedVar(symbol);
+#if defined(__WXPM__) || defined(__EMX__)
+    DosQueryProcAddr( m_handle, 1L, name.c_str(), (PFN*)symbol );

 #else
 #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);
+    symbol = RawGetSymbol(m_handle, name);

 #endif
 
 #endif
 

+    if ( success )
+        *success = symbol != NULL;
+
+    return symbol;
+}
+
+void *wxDynamicLibrary::GetSymbol(const wxString& name, bool *success) const
+{
+    void *symbol = DoGetSymbol(name, success);

     if ( !symbol )
     {
     if ( !symbol )
     {

+#ifdef wxHAVE_DYNLIB_ERROR
+        Error();
+#else

         wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"),
         wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"),

-                      symbname.c_str());
+                      name.c_str());
+#endif

     }
 
     return symbol;
 }
 
     }
 
     return symbol;
 }
 

-// ---------------------------------------------------------------------------
-// wxLibraries (only one instance should normally exist)
-// ---------------------------------------------------------------------------
-
-wxLibraries::wxLibraries()
-{
-}
+// ----------------------------------------------------------------------------
+// informational methods
+// ----------------------------------------------------------------------------

 
 

-wxLibraries::~wxLibraries()
+/*static*/
+wxString
+wxDynamicLibrary::CanonicalizeName(const wxString& name,
+                                   wxDynamicLibraryCategory cat)

 {
 {

-    wxNode *node = m_loaded.First();
+    wxString nameCanonic;

 
 

-    while (node) {
-        wxLibrary *lib = (wxLibrary *)node->Data();
-        delete lib;
-
-        node = node->Next();
-    }
-}
-
-wxLibrary *wxLibraries::LoadLibrary(const wxString& name)
-{
-    wxNode *node;
-    wxLibrary *lib;
-    wxClassInfo *old_sm_first;
-
-    if ( (node = m_loaded.Find(name.GetData())) )
-        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);
-
-#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, ':');
-    while ( tokenizer.HasMoreToken() )
+    // under Unix the library names usually start with "lib" prefix, add it
+#if defined(__UNIX__) && !defined(__EMX__)
+    switch ( cat )

     {
     {

-        wxString fullname(tokenizer.NextToken());
+        default:
+            wxFAIL_MSG( _T("unknown wxDynamicLibraryCategory value") );
+            // fall through

 
 

-        fullname << '/' << lib_name;
-        if ( wxFileExists(fullname) )
-        {
-            lib_name = fullname;
+        case wxDL_MODULE:
+            // don't do anything for modules, their names are arbitrary
+            break;

 
 

-            // found the library
+        case wxDL_LIBRARY:
+            // library names should start with "lib" under Unix
+            nameCanonic = _T("lib");

             break;
             break;

-        }

     }
     }

-    //else: not found in the path, leave the name as is (secutiry risk?)
-
-#endif // __UNIX__
-
-    wxDllType handle;
-
-#if defined(__WXMAC__)
-    FSSpec myFSSpec ;
-    Ptr        myMainAddr ;
-    Str255     myErrName ;
+#else // !__UNIX__
+    wxUnusedVar(cat);
+#endif // __UNIX__/!__UNIX__

 
 

-    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
+    nameCanonic << name << GetDllExt();
+    return nameCanonic;
+}

 
 

-    if ( !handle )
+/*static*/
+wxString wxDynamicLibrary::CanonicalizePluginName(const wxString& name,
+                                                  wxPluginCategory cat)
+{
+    wxString suffix;
+    if ( cat == wxDL_PLUGIN_GUI )

     {
     {

-        wxLogSysError(_("Failed to load shared library '%s'"),
-                      lib_name.c_str());
-
-        return NULL;
+        suffix = wxPlatformInfo::Get().GetPortIdShortName();

     }
     }

+#if wxUSE_UNICODE
+    suffix << _T('u');
+#endif
+#ifdef __WXDEBUG__
+    suffix << _T('d');
+#endif

 
 

-    lib = new wxLibrary(handle);
+    if ( !suffix.empty() )
+        suffix = wxString(_T("_")) + suffix;

 
 

-    wxClassInfo::sm_first = old_sm_first;
+#define WXSTRINGIZE(x)  #x
+#if defined(__UNIX__) && !defined(__EMX__)
+    #if (wxMINOR_VERSION % 2) == 0
+        #define wxDLLVER(x,y,z) "-" WXSTRINGIZE(x) "." WXSTRINGIZE(y)
+    #else
+        #define wxDLLVER(x,y,z) "-" WXSTRINGIZE(x) "." WXSTRINGIZE(y) "." WXSTRINGIZE(z)
+    #endif
+#else
+    #if (wxMINOR_VERSION % 2) == 0
+        #define wxDLLVER(x,y,z) WXSTRINGIZE(x) WXSTRINGIZE(y)
+    #else
+        #define wxDLLVER(x,y,z) WXSTRINGIZE(x) WXSTRINGIZE(y) WXSTRINGIZE(z)
+    #endif
+#endif

 
 

-    m_loaded.Append(name.GetData(), lib);
+    suffix << wxString::FromAscii(wxDLLVER(wxMAJOR_VERSION, wxMINOR_VERSION,
+                                           wxRELEASE_NUMBER));
+#undef wxDLLVER
+#undef WXSTRINGIZE
+
+#ifdef __WINDOWS__
+    // Add compiler identification:
+    #if defined(__GNUG__)
+        suffix << _T("_gcc");
+    #elif defined(__VISUALC__)
+        suffix << _T("_vc");
+    #elif defined(__WATCOMC__)
+        suffix << _T("_wat");
+    #elif defined(__BORLANDC__)
+        suffix << _T("_bcc");
+    #endif
+#endif

 
 

-    return lib;
+    return CanonicalizeName(name + suffix, wxDL_MODULE);

 }
 
 }
 

-wxObject *wxLibraries::CreateObject(const wxString& path)
+/*static*/
+wxString wxDynamicLibrary::GetPluginsDirectory()

 {
 {

-    wxNode *node = m_loaded.First();
-    wxObject *obj;
-
-    while (node) {
-        obj = ((wxLibrary *)node->Data())->CreateObject(path);
-        if (obj)
-            return obj;
+#ifdef __UNIX__
+    wxString format = wxGetInstallPrefix();
+    wxString dir;
+    format << wxFILE_SEP_PATH
+           << wxT("lib") << wxFILE_SEP_PATH
+           << wxT("wx") << wxFILE_SEP_PATH
+#if (wxMINOR_VERSION % 2) == 0
+           << wxT("%i.%i");
+    dir.Printf(format.c_str(), wxMAJOR_VERSION, wxMINOR_VERSION);
+#else
+           << wxT("%i.%i.%i");
+    dir.Printf(format.c_str(),
+               wxMAJOR_VERSION, wxMINOR_VERSION, wxRELEASE_NUMBER);
+#endif
+    return dir;

 
 

-        node = node->Next();
-    }
-    return NULL;
+#else // ! __UNIX__
+    return wxEmptyString;
+#endif

 }
 
 }
 

+

 #endif // wxUSE_DYNLIB_CLASS
 #endif // wxUSE_DYNLIB_CLASS