mirror of
https://github.com/ZDoom/ZMusic.git
synced 2024-11-23 20:32:14 +00:00
108 lines
2.9 KiB
C++
108 lines
2.9 KiB
C++
/*
|
|
** i_module.cpp
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 2016 Braden Obrzut
|
|
** All rights reserved.
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
**
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
**---------------------------------------------------------------------------
|
|
**
|
|
*/
|
|
|
|
#include "i_module.h"
|
|
|
|
#ifdef _WIN32
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#include <windows.h>
|
|
#else
|
|
#include <dlfcn.h>
|
|
#endif
|
|
|
|
|
|
#ifndef _WIN32
|
|
#define LoadLibraryA(x) dlopen((x), RTLD_LAZY)
|
|
#define GetProcAddress(a,b) dlsym((a),(b))
|
|
#define FreeLibrary(x) dlclose((x))
|
|
using HMODULE = void*;
|
|
#endif
|
|
|
|
bool FModule::Load(std::initializer_list<const char*> libnames)
|
|
{
|
|
for(auto lib : libnames)
|
|
{
|
|
if(!Open(lib))
|
|
continue;
|
|
|
|
StaticProc *proc;
|
|
for(proc = reqSymbols;proc;proc = proc->Next)
|
|
{
|
|
if(!(proc->Call = GetSym(proc->Name)) && !proc->Optional)
|
|
{
|
|
Unload();
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(IsLoaded())
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void FModule::Unload()
|
|
{
|
|
if(handle)
|
|
{
|
|
FreeLibrary((HMODULE)handle);
|
|
handle = nullptr;
|
|
}
|
|
}
|
|
|
|
bool FModule::Open(const char* lib)
|
|
{
|
|
#ifdef _WIN32
|
|
if((handle = GetModuleHandleA(lib)) != nullptr)
|
|
return true;
|
|
#else
|
|
// Loading an empty string in Linux doesn't do what we expect it to.
|
|
if(*lib == '\0')
|
|
return false;
|
|
#endif
|
|
handle = LoadLibraryA(lib);
|
|
return handle != nullptr;
|
|
}
|
|
|
|
void *FModule::GetSym(const char* name)
|
|
{
|
|
return (void *)GetProcAddress((HMODULE)handle, name);
|
|
}
|
|
|
|
std::string module_progdir("."); // current program directory used to look up dynamic libraries. Default to something harmless in case the user didn't set it.
|
|
|
|
void FModule_SetProgDir(const char* progdir)
|
|
{
|
|
module_progdir = progdir;
|
|
}
|