X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/406291e530b14c6a2f4537ce59647d88b3ccde7c..270a909e20a2c652fd816ad14407113ad0319c9d:/src/common/dynlib.cpp diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp index 177e21a773..8ad47c2b83 100644 --- a/src/common/dynlib.cpp +++ b/src/common/dynlib.cpp @@ -9,26 +9,73 @@ // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "dynlib.h" -#endif - -#include -#include -#include -#include +// ============================================================================ +// declarations +// ============================================================================ -// --------------------------------------------------------------------------- -// System dependent include -// --------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- -#if defined(__LINUX__) || defined(__SGI__) -#include +#ifdef __GNUG__ +# pragma implementation "dynlib.h" #endif -#ifdef __WINDOWS__ -#include +#include "wx/wxprec.h" + +#ifdef __BORLANDC__ + #pragma hdrstop #endif +#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.fn_str(), RTLD_NOW/*RTLD_LAZY*/) +# define wxDllGetSymbol(handle, name) dlsym(handle, name.mb_str()) +# 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 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 + + // using LoadLibraryEx under Win32 to avoid name clash with LoadLibrary +# ifdef __WIN32__ +# define wxDllOpen(lib) ::LoadLibraryEx(lib, 0, 0) +# 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 +# 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 // --------------------------------------------------------------------------- // Global variables @@ -36,212 +83,290 @@ wxLibraries wxTheLibraries; +// ---------------------------------------------------------------------------- +// private functions +// ---------------------------------------------------------------------------- + +// 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 + + return fullname; +} + +// ============================================================================ +// implementation +// ============================================================================ + + // --------------------------------------------------------------------------- -// wxLibrary (one instance per dynamic library +// wxLibrary (one instance per dynamic library) // --------------------------------------------------------------------------- -wxLibrary::wxLibrary(void *handle) +wxLibrary::wxLibrary(wxDllType handle) { - typedef wxClassLibrary *(*t_get_list)(void); - t_get_list get_list; + typedef wxClassInfo *(*t_get_first)(void); + t_get_first get_first; - m_handle = handle; + m_handle = handle; - get_list = (t_get_list)GetSymbol("GetClassList"); - m_liblist = (*get_list)(); + // 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()); } wxLibrary::~wxLibrary() { - if (m_handle) { - typedef void (*t_free_list)(wxClassLibrary *); - t_free_list free_list; + if ( m_handle ) + { + wxDllClose(m_handle); + } +} - free_list = (t_free_list) GetSymbol("FreeClassList"); - if (free_list != NULL) - free_list(m_liblist); - else - delete m_liblist; +wxObject *wxLibrary::CreateObject(const wxString& name) +{ + wxClassInfo *info = (wxClassInfo *)classTable.Get(name); -#if defined(__LINUX__) || defined(__SGI__) - dlclose(m_handle); -#endif -#ifdef __WINDOWS__ - FreeLibrary((HMODULE)m_handle); -#endif - } + if (!info) + return NULL; + + return info->CreateObject(); } -wxObject *wxLibrary::CreateObject(const wxString& name) +void wxLibrary::PrepareClasses(wxClassInfo *first) { - return m_liblist->CreateObject(name); + // Index all class infos by their class name + wxClassInfo *info = first; + while (info) + { + if (info->m_className) + classTable.Put(info->m_className, (wxObject *)info); + info = info->GetNext(); + } + + // Set base pointers for each wxClassInfo + info = first; + while (info) + { + 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; + } } void *wxLibrary::GetSymbol(const wxString& symbname) { -#if defined(__LINUX__) || defined(__SGI__) - return dlsym(m_handle, WXSTRINGCAST symbname); -#endif -#ifdef __WINDOWS__ - return GetProcAddress(m_handle, WXSTRINGCAST symbname); -#endif - return NULL; + return wxDllLoader::GetSymbol(m_handle, symbname); } // --------------------------------------------------------------------------- -// wxLibraries (only one instance should normally exist) +// wxDllLoader // --------------------------------------------------------------------------- -wxLibraries::wxLibraries() +/* static */ +wxDllType +wxDllLoader::GetProgramHandle(void) { +#if defined( HAVE_DLOPEN ) + // 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(_("This method is not implemented under Windows or OS/2")); + return 0; +#endif } -wxLibraries::~wxLibraries() +/* static */ +wxDllType +wxDllLoader::LoadLibrary(const wxString & libname, bool *success) { - wxNode *node = m_loaded.First(); + wxDllType handle; + +#if defined(__WXMAC__) + 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(__OS2__) + char zError[256] = ""; + wxDllOpen(zError, libname, handle); +#else // !Mac + handle = wxDllOpen(libname); +#endif // OS + + if ( !handle ) + { + wxLogSysError(_("Failed to load shared library '%s'"), libname.c_str()); + } - while (node) { - wxLibrary *lib = (wxLibrary *)node->Data(); - delete lib; + if ( success ) + { + *success = handle != 0; + } - node = node->Next(); - } + return handle; } -wxLibrary *wxLibraries::LoadLibrary(const wxString& name) -{ - wxString lib_name = name; - wxNode *node; - wxLibrary *lib; - if ( (node = m_loaded.Find(name.GetData())) ) - return ((wxLibrary *)node->Data()); - -#if defined(__LINUX__) || defined(__SGI__) - lib_name.Prepend("lib"); - lib_name += ".so"; +/* static */ +void +wxDllLoader::UnloadLibrary(wxDllType handle) +{ + wxDllClose(handle); +} - printf("lib_name = %s\n", WXSTRINGCAST lib_name); +/* static */ +void * +wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name) +{ + void *symbol = NULL; // return value - void *handle = dlopen(WXSTRINGCAST lib_name, RTLD_LAZY); +#if defined( __WXMAC__ ) + Ptr symAddress ; + CFragSymbolClass symClass ; + Str255 symName ; - if (!handle) - return NULL; -#elif defined( __WINDOWS__ ) - lib_name += ".dll"; + strcpy( (char*) symName , name ) ; + c2pstr( (char*) symName ) ; - HMODULE handle = LoadLibrary(lib_name); - if (!handle) - return NULL; + if ( FindSymbol( dllHandle , symName , &symAddress , &symClass ) == noErr ) + symbol = (void *)symAddress ; +#elif defined( __OS2__ ) + wxDllGetSymbol(dllHandle, symbol); #else - return NULL; + symbol = wxDllGetSymbol(dllHandle, name); #endif -#if defined(__LINUX__) || defined(__SGI__) || defined (__WINDOWS__) - lib = new wxLibrary((void *)handle); - m_loaded.Append(name.GetData(), lib); - return lib; -#endif -} - -wxObject *wxLibraries::CreateObject(const wxString& path) -{ - wxNode *node = m_loaded.First(); - wxObject *obj; - - while (node) { - obj = ((wxLibrary *)node->Data())->CreateObject(path); - if (obj) - return obj; - - node = node->Next(); - } - return NULL; + if ( !symbol ) + { + wxLogSysError(_("Couldn't find symbol '%s' in a dynamic library"), + name.c_str()); + } + return symbol; } // --------------------------------------------------------------------------- -// wxClassLibrary (this class is used to access the internal class) +// wxLibraries (only one instance should normally exist) // --------------------------------------------------------------------------- -wxClassLibrary::wxClassLibrary(void) +wxLibraries::wxLibraries():m_loaded(wxKEY_STRING) { } -wxClassLibrary::~wxClassLibrary(void) +wxLibraries::~wxLibraries() { - uint i; + wxNode *node = m_loaded.First(); - for (i=0;iData(); + delete lib; -void wxClassLibrary::RegisterClass(wxClassInfo *class_info, - const wxString& path) -{ - wxClassLibInfo *info = new wxClassLibInfo; - - info->class_info = class_info; - info->path = path; - m_list.Add(info); + node = node->Next(); + } } -void wxClassLibrary::UnregisterClass(wxClassInfo *class_info) +wxLibrary *wxLibraries::LoadLibrary(const wxString& name) { - uint i = 0; + 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())) ) + 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 << ':' << envLibPath; + wxStringTokenizer tokenizer(libPath, wxT(':')); + while ( tokenizer.HasMoreToken() ) + { + wxString fullname(tokenizer.NextToken()); + + fullname << '/' << libname; + if ( wxFileExists(fullname) ) + { + libname = fullname; + + // found the library + break; + } + } + //else: not found in the path, leave the name as is (secutiry risk?) + +#endif // __UNIX__ +#endif - while (i < m_list.Count()) { - if (m_list[i]->class_info == class_info) { - delete (m_list[i]); - m_list.Remove(i); - return; + 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); } - i++; - } + else + lib = NULL; + return lib; } -bool wxClassLibrary::CreateObjects(const wxString& path, - wxArrayClassInfo& objs) +wxObject *wxLibraries::CreateObject(const wxString& path) { - wxClassLibInfo *info; - uint i = 0; - - while (i < m_list.Count()) { - info = m_list[i]; - if (wxMatchWild(path, info->path)) - objs.Add(info->class_info); - i++; - } - return (i > 0); -} + wxNode *node = m_loaded.First(); + wxObject *obj; -bool wxClassLibrary::FetchInfos(const wxString& path, - wxArrayClassLibInfo& infos) -{ - wxClassLibInfo *info; - uint i = 0; - - while (i < m_list.Count()) { - info = m_list[i]; - if (wxMatchWild(path, info->path)) { - wxClassLibInfo *inf = new wxClassLibInfo; - *inf = *info; - infos.Add(inf); + while (node) { + obj = ((wxLibrary *)node->Data())->CreateObject(path); + if (obj) + return obj; + + node = node->Next(); } - i++; - } - return (i > 0); + return NULL; } -wxObject *wxClassLibrary::CreateObject(const wxString& path) -{ - wxClassLibInfo *info; - uint i = 0; - - while (i < m_list.Count()) { - info = m_list[i]; - if (wxMatchWild(path, info->path)) - return info->class_info->CreateObject(); - i++; - } - return NULL; -} +#endif // wxUSE_DYNLIB_CLASS