138 lines
3.3 KiB
C++
138 lines
3.3 KiB
C++
/*
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Copyright (c) 2013 yvt
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This file is part of OpenSpades.
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OpenSpades is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenSpades is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenSpades. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <Imports/SDL.h>
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#ifdef WIN32
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#include <windows.h>
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#include "Debug.h"
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#include "DynamicLibrary.h"
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#include "Exception.h"
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namespace spades {
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static std::string errToMsg(DWORD err) {
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LPSTR msgBuf = NULL;
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DWORD dwFmt = FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
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FORMAT_MESSAGE_IGNORE_INSERTS;
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size_t size = FormatMessageA(dwFmt, NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPSTR)&msgBuf, 0, NULL);
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std::string message(msgBuf, size);
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LocalFree(msgBuf);
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return message;
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}
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DynamicLibrary::DynamicLibrary(const char *fn) {
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SPADES_MARK_FUNCTION();
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name = fn;
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handle = (void *)LoadLibrary(fn);
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if (handle == NULL) {
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DWORD err = GetLastError();
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std::string msg = errToMsg(err);
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SPRaise("Failed to dlload '%s': 0x%08x (%s)", fn, (int)err, msg.c_str());
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}
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}
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DynamicLibrary::~DynamicLibrary() {
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SPADES_MARK_FUNCTION();
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FreeLibrary((HINSTANCE)handle);
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}
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void *DynamicLibrary::GetSymbolOrNull(const char *name) {
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SPADES_MARK_FUNCTION();
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void *addr = (void *)GetProcAddress((HINSTANCE)handle, name);
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return addr;
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}
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void *DynamicLibrary::GetSymbol(const char *sname) {
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SPADES_MARK_FUNCTION();
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void *v = GetSymbolOrNull(sname);
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if (v == NULL) {
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DWORD err = GetLastError();
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std::string msg = errToMsg(err);
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SPRaise("Failed to find symbol '%s' in %s: 0x%08x (%s)", sname, name.c_str(), err,
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msg.c_str());
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}
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return v;
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}
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}
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#else
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#include "Debug.h"
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#include "DynamicLibrary.h"
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#include "Exception.h"
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#include <dlfcn.h>
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namespace spades {
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DynamicLibrary::DynamicLibrary(const char *fn) {
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SPADES_MARK_FUNCTION();
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if (fn == nullptr) {
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SPInvalidArgument("fn");
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}
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name = fn;
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handle = dlopen(fn, RTLD_LAZY);
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if (handle == nullptr && strchr(fn, '/') == nullptr && strchr(fn, '\\') == nullptr) {
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char *baseDir = SDL_GetBasePath();
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std::string newPath = baseDir;
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newPath += "/";
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newPath += fn;
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handle = dlopen(newPath.c_str(), RTLD_LAZY);
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}
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if (handle == nullptr) {
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std::string err = dlerror();
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SPRaise("Failed to dlload '%s': %s", fn, err.c_str());
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}
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}
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DynamicLibrary::~DynamicLibrary() {
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SPADES_MARK_FUNCTION();
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dlclose(handle);
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}
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void *DynamicLibrary::GetSymbolOrNull(const char *name) {
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SPADES_MARK_FUNCTION();
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void *addr = dlsym(handle, name);
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return addr;
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}
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void *DynamicLibrary::GetSymbol(const char *sname) {
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SPADES_MARK_FUNCTION();
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void *v = GetSymbolOrNull(sname);
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if (v == NULL) {
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std::string err = dlerror();
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SPRaise("Failed to find symbol '%s' in %s: %s", sname, name.c_str(), err.c_str());
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}
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return v;
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}
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}
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#endif
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