X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1d44aaf824396d1029bab018f4613e3952daa9ee..cc985face55ed02c310860afefc8e6d656fb849d:/src/common/dynlib.cpp?ds=sidebyside diff --git a/src/common/dynlib.cpp b/src/common/dynlib.cpp index db17f823d4..bd6cbe5250 100644 --- a/src/common/dynlib.cpp +++ b/src/common/dynlib.cpp @@ -9,26 +9,66 @@ // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + #ifdef __GNUG__ -#pragma implementation "dynlib.h" +# pragma implementation "dynlib.h" #endif -#include -#include -#include -#include - -// --------------------------------------------------------------------------- -// System dependent include -// --------------------------------------------------------------------------- +#include "wx/wxprec.h" -#ifdef __UNIX__ -#include +#ifdef __BORLANDC__ + #pragma hdrstop #endif -#ifdef __WINDOWS__ -#include -#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 +#else +# error "Don't know how to load shared libraries on this platform." +#endif // OS // --------------------------------------------------------------------------- // Global variables @@ -36,209 +76,278 @@ wxLibraries wxTheLibraries; -// --------------------------------------------------------------------------- -// wxLibrary (one instance per dynamic library -// --------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// private functions +// ---------------------------------------------------------------------------- -wxLibrary::wxLibrary(void *handle) +// 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) { - typedef wxClassLibrary *(*t_get_list)(void); - t_get_list get_list; - - m_handle = handle; + wxString fullname(basename); + +#if defined(__UNIX__) +# if defined(__HPUX__) + fullname << ".sl"; +# else //__HPUX__ + fullname << ".so"; +# endif //__HPUX__ +#elif defined(__WINDOWS__) + fullname << ".dll"; +#endif - get_list = (t_get_list)GetSymbol("GetClassList"); - m_liblist = (*get_list)(); + return fullname; } -wxLibrary::~wxLibrary() +// ============================================================================ +// implementation +// ============================================================================ + + +// --------------------------------------------------------------------------- +// wxLibrary (one instance per dynamic library) +// --------------------------------------------------------------------------- + +wxLibrary::wxLibrary(wxDllType handle) { - if (m_handle) { - typedef void (*t_free_list)(wxClassLibrary *); - t_free_list free_list; + typedef wxClassInfo *(*t_get_first)(void); + t_get_first get_first; - free_list = (t_free_list) GetSymbol("FreeClassList"); - if (free_list != NULL) - free_list(m_liblist); - else - delete m_liblist; + m_handle = handle; -#ifdef __UNIX__ - dlclose(m_handle); -#endif -#ifdef __WINDOWS__ - FreeLibrary((HMODULE)m_handle); -#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()); } -wxObject *wxLibrary::CreateObject(const wxString& name) +wxLibrary::~wxLibrary() { - return m_liblist->CreateObject(name); + if ( m_handle ) + { + wxDllClose(m_handle); + } } -void *wxLibrary::GetSymbol(const wxString& symbname) +wxObject *wxLibrary::CreateObject(const wxString& name) { -#ifdef __UNIX__ - return dlsym(m_handle, WXSTRINGCAST symbname); -#endif -#ifdef __WINDOWS__ - return GetProcAddress(m_handle, WXSTRINGCAST symbname); -#endif - return NULL; -} + wxClassInfo *info = (wxClassInfo *)classTable.Get(name); -// --------------------------------------------------------------------------- -// wxLibraries (only one instance should normally exist) -// --------------------------------------------------------------------------- + if (!info) + return NULL; -wxLibraries::wxLibraries() -{ + return info->CreateObject(); } -wxLibraries::~wxLibraries() +void wxLibrary::PrepareClasses(wxClassInfo *first) { - wxNode *node = m_loaded.First(); - - while (node) { - wxLibrary *lib = (wxLibrary *)node->Data(); - delete lib; + // 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(); + } - node = node->Next(); - } + // 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; + } } -wxLibrary *wxLibraries::LoadLibrary(const wxString& name) +void *wxLibrary::GetSymbol(const wxString& symbname) { - wxString lib_name = name; - wxNode *node; - wxLibrary *lib; + return wxDllLoader::GetSymbol(m_handle, symbname); +} - if ( (node = m_loaded.Find(name.GetData())) ) - return ((wxLibrary *)node->Data()); +// --------------------------------------------------------------------------- +// wxDllLoader +// --------------------------------------------------------------------------- +/* static */ +wxDllType +wxDllLoader::GetProgramHandle(void) +{ #ifdef __UNIX__ - lib_name.Prepend("./lib"); - lib_name += ".so"; + return dlopen(NULL, RTLD_NOW/*RTLD_LAZY*/); +#else + wxFAIL_MSG(_("This method is not implemented under Windows")); - printf("lib_name = %s\n", WXSTRINGCAST lib_name); + return 0; +#endif +} - void *handle = dlopen(WXSTRINGCAST lib_name, RTLD_LAZY); - if (!handle) - return NULL; -#endif -#ifdef __WINDOWS__ - lib_name += ".dll"; +/* static */ +wxDllType +wxDllLoader::LoadLibrary(const wxString & lib_name, bool *success) +{ + wxASSERT(success); + + wxDllType handle; + +#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 + + if ( !handle ) + { + wxLogSysError(_("Failed to load shared library '%s'"), + lib_name.c_str()); + *success = FALSE; + return NULL; + } + *success = TRUE; + return handle; +} - HMODULE handle = LoadLibrary(lib_name); - if (!handle) - return NULL; -#endif - lib = new wxLibrary((void *)handle); - m_loaded.Append(name.GetData(), lib); - return lib; +/* static */ +void +wxDllLoader::UnloadLibrary(wxDllType handle) +{ + wxDllClose(handle); } -wxObject *wxLibraries::CreateObject(const wxString& path) +/* static */ +void * +wxDllLoader::GetSymbol(wxDllType dllHandle, const wxString &name) { - wxNode *node = m_loaded.First(); - wxObject *obj; - - while (node) { - obj = ((wxLibrary *)node->Data())->CreateObject(path); - if (obj) - return obj; + 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 ; +#else + symbol = wxDllGetSymbol(dllHandle, name); +#endif - 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() { } -wxClassLibrary::~wxClassLibrary(void) +wxLibraries::~wxLibraries() { - size_t i; - - for (i=0;iData(); + delete lib; - 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) { - size_t i = 0; + 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); + +/* + 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?) - while (i < m_list.Count()) { - if (m_list[i]->class_info == class_info) { - delete (m_list[i]); - m_list.Remove(i); - return; +#endif // __UNIX__ +#endif + + bool success = FALSE; + wxDllType handle = wxDllLoader::LoadLibrary(lib_name, &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; - size_t 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; - size_t 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; - size_t 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