X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/763ca781fa735199af79ed8fd1e604f9bfadb9ac..6012f61212b67d510e4a6393272e867a4ceb58c1:/src/common/dynlib.cpp?ds=sidebyside diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp index 5c93399eee..f400389c4a 100644 --- 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: $Id$ -// 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 // ============================================================================ @@ -17,418 +21,307 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ -# pragma implementation "dynlib.h" -#endif - #include "wx/wxprec.h" #ifdef __BORLANDC__ - #pragma hdrstop + #pragma hdrstop #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 -// ---------------------------------------------------------------------------- +#ifndef WX_PRECOMP + #include "wx/intl.h" + #include "wx/log.h" + #include "wx/app.h" + #include "wx/utils.h" +#endif //WX_PRECOMP -#if defined(__WXPM__) || defined(__EMX__) -# define INCL_DOS -# include -# 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 +#include "wx/filefn.h" +#include "wx/filename.h" // for SplitPath() +#include "wx/apptrait.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 (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__) - // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary -# ifdef __WIN32__ -#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 -#elif defined(__WXMAC__) -# define wxDllClose(handle) CloseConnection(&handle) -#else -# error "Don't know how to load shared libraries on this platform." -#endif // OS +#include "wx/arrimpl.cpp" -// --------------------------------------------------------------------------- -// Global variables -// --------------------------------------------------------------------------- +#if defined(__WXMAC__) + #include "wx/mac/private.h" +#endif -wxLibraries wxTheLibraries; +WX_DEFINE_USER_EXPORTED_OBJARRAY(wxDynamicLibraryDetailsArray) // ============================================================================ // 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; - fullname << basename << wxDllLoader::GetDllExt(); - - return fullname; -} - // --------------------------------------------------------------------------- -// 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 wxChar *wxDynamicLibrary::ms_dllext = _T(".dll"); +#elif defined(__WXMAC__) && !defined(__DARWIN__) + const wxChar *wxDynamicLibrary::ms_dllext = wxEmptyString; +#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 = (wxClassInfo *)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(__WXMAC__) && !defined(__DARWIN__) + FSSpec myFSSpec; + Ptr myMainAddr; + Str255 myErrName; + + wxMacFilename2FSSpec( libname , &myFSSpec ); + + if( GetDiskFragment( &myFSSpec, + 0, + kCFragGoesToEOF, + "\p", + kPrivateCFragCopy, + &m_handle, + &myMainAddr, + myErrName ) != noErr ) { - 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; + wxLogSysError( _("Failed to load shared library '%s' Error '%s'"), + libname.c_str(), + wxMacMakeStringFromPascal( myErrName ).c_str() ); + m_handle = 0; } -} - -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__ +#elif defined(__WXPM__) || defined(__EMX__) + char err[256] = ""; + DosLoadModule(err, sizeof(err), (PSZ)libname.c_str(), &m_handle); +#else // this should be the only remaining branch eventually + m_handle = RawLoad(libname, flags); #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; + if ( m_handle == 0 ) + { +#ifdef wxHAVE_DYNLIB_ERROR + Error(); #else - wxFAIL_MSG( wxT("This method is not implemented under Windows or OS/2")); - return 0; + wxLogSysError(_("Failed to load shared library '%s'"), libname.c_str()); #endif -} - -/* static */ -wxDllType -wxDllLoader::LoadLibrary(const wxString & libname, bool *success) -{ - wxDllType handle; - -#if defined(__WXMAC__) && !defined(__UNIX__) - FSSpec myFSSpec ; - Ptr myMainAddr ; - Str255 myErrName ; - - wxMacFilename2FSSpec( libname , &myFSSpec ) ; - if (GetDiskFragment( &myFSSpec , 0 , kCFragGoesToEOF , "\p" , kPrivateCFragCopy , &handle , &myMainAddr , - myErrName ) != noErr ) - { - p2cstr( myErrName ) ; - wxLogSysError( _("Failed to load shared library '%s' Error '%s'") , libname.c_str() , (char*)myErrName ) ; - handle = 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; + return IsLoaded(); } +// 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 -wxDllLoader::UnloadLibrary(wxDllType handle) +void wxDynamicLibrary::Unload(wxDllType handle) { - wxDllClose(handle); +#if defined(__OS2__) || defined(__EMX__) + DosFreeModule( handle ); +#elif defined(__WXMAC__) && !defined(__DARWIN__) + CloseConnection( (CFragConnectionID*) &handle ); +#else + #error "runtime shared lib support not implemented" +#endif } -/* static */ -void * -wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name) +#endif // !(__WXMSW__ || __UNIX__) + +void *wxDynamicLibrary::DoGetSymbol(const wxString &name, bool *success) const { - void *symbol = NULL; // return value + wxCHECK_MSG( IsLoaded(), NULL, + _T("Can't load symbol from unloaded library") ); -#if defined(__WXMAC__) && !defined(__UNIX__) - Ptr symAddress ; - CFragSymbolClass symClass ; - Str255 symName ; + void *symbol = 0; + wxUnusedVar(symbol); +#if defined(__WXMAC__) && !defined(__DARWIN__) + Ptr symAddress; + CFragSymbolClass symClass; + Str255 symName; #if TARGET_CARBON - c2pstrcpy( (StringPtr) symName , name ) ; + c2pstrcpy( (StringPtr) symName, name.fn_str() ); #else - strcpy( (char *) symName , name ) ; - c2pstr( (char *) symName ) ; + strcpy( (char *)symName, name.fn_str() ); + c2pstr( (char *)symName ); #endif - - if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr ) - symbol = (void *)symAddress ; -#elif defined( __WXPM__ ) || defined(__EMX__) - wxDllGetSymbol(dllHandle, symbol); + if( FindSymbol( m_handle, symName, &symAddress, &symClass ) == noErr ) + symbol = (void *)symAddress; +#elif defined(__WXPM__) || defined(__EMX__) + DosQueryProcAddr( m_handle, 1L, (PSZ)name.c_str(), (PFN*)symbol ); #else - // mb_str() is necessary in Unicode build - symbol = wxDllGetSymbol(dllHandle, name.mb_str()); + symbol = RawGetSymbol(m_handle, name); #endif + if ( success ) + *success = symbol != NULL; + + return symbol; +} + +void *wxDynamicLibrary::GetSymbol(const wxString& name, bool *success) const +{ + void *symbol = DoGetSymbol(name, success); if ( !symbol ) { +#ifdef wxHAVE_DYNLIB_ERROR + Error(); +#else wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"), name.c_str()); +#endif } + return symbol; } -// --------------------------------------------------------------------------- -// wxLibraries (only one instance should normally exist) -// --------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// informational methods +// ---------------------------------------------------------------------------- -wxLibraries::wxLibraries():m_loaded(wxKEY_STRING) +/*static*/ +wxString +wxDynamicLibrary::CanonicalizeName(const wxString& name, + wxDynamicLibraryCategory cat) { -} + wxString nameCanonic; -wxLibraries::~wxLibraries() -{ - wxNode *node = m_loaded.First(); + // under Unix the library names usually start with "lib" prefix, add it +#if defined(__UNIX__) && !defined(__EMX__) + switch ( cat ) + { + default: + wxFAIL_MSG( _T("unknown wxDynamicLibraryCategory value") ); + // fall through - while (node) { - wxLibrary *lib = (wxLibrary *)node->Data(); - delete lib; + case wxDL_MODULE: + // don't do anything for modules, their names are arbitrary + break; - node = node->Next(); + case wxDL_LIBRARY: + // library names should start with "lib" under Unix + nameCanonic = _T("lib"); + break; } +#else // !__UNIX__ + wxUnusedVar(cat); +#endif // __UNIX__/!__UNIX__ + + nameCanonic << name << GetDllExt(); + return nameCanonic; } -wxLibrary *wxLibraries::LoadLibrary(const wxString& name) +/*static*/ +wxString wxDynamicLibrary::CanonicalizePluginName(const wxString& name, + wxPluginCategory cat) { - wxNode *node; - wxLibrary *lib; - wxClassInfo *old_sm_first; - -#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 libname = 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 << wxT(':') << envLibPath; - wxStringTokenizer tokenizer(libPath, wxT(':')); - while ( tokenizer.HasMoreToken() ) + wxString suffix; + if ( cat == wxDL_PLUGIN_GUI ) { - wxString fullname(tokenizer.NextToken()); + wxAppTraits *traits = wxAppConsole::GetInstance() ? + wxAppConsole::GetInstance()->GetTraits() : NULL; + wxCHECK_MSG( traits, wxEmptyString, + _("can't query for GUI plugins name in console applications") ); + suffix = traits->GetToolkitInfo().shortName; + } +#if wxUSE_UNICODE + suffix << _T('u'); +#endif +#ifdef __WXDEBUG__ + suffix << _T('d'); +#endif - fullname << wxT('/') << libname; - if ( wxFileExists(fullname) ) - { - libname = fullname; + if ( !suffix.empty() ) + suffix = wxString(_T("_")) + suffix; - // found the library - break; - } - } - //else: not found in the path, leave the name as is (secutiry risk?) +#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 -#endif // __UNIX__ + 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 - 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 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