quakeforge-old/common/plugin.c

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/*
plugin.c
Dynamic shared object loader
Copyright (C) 1999, 2000 contributors of the QuakeForge project
Please see the file "AUTHORS" for a list of contributors
Author: Zephaniah E. Hull <mwarp@whitestar.soark.net>
Date: 11 Feb 2000
This file is part of the QuakeForge Core system.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA.
*/
#include <string.h>
#include <stdio.h>
#ifndef WIN32
#include <dlfcn.h>
#include <sys/param.h>
#else
#define LIBDIR ""
#include "input.h"
#endif
#include <stdlib.h>
#include <config.h>
#include <net.h>
#include <plugin.h>
#include <cvar.h>
cvar_t drv_path = {"drv_path", ".:" LIBDIR "/quakeforge"};
input_pi *IN;
#ifndef WIN32
void *_plugin_load(const char *filename)
{
void *h;
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char path_buf[MAXPATHLEN*2+1+1];
char *path,*end;
int len;
for (path = drv_path.string; *path; path=end) {
end = strchr(path,':');
if (!end)
end = strchr(path,0);
len=end-path;
if (len>MAXPATHLEN)
len=MAXPATHLEN;
sprintf(path_buf,"%.*s/%.*s",len,path,MAXPATHLEN,filename);
if ((h = dlopen(path_buf, RTLD_LAZY))) {
return h;
}
if (*end)
end++;
}
return 0;
}
int plugin_load(char *filename)
{
void *(*gpi) (void);
void *h;
if ((h=_plugin_load(filename))) {
if ((gpi = dlsym(h, "get_input_plugin_info"))) {
/*
input_pi *p;
p = (input_pi *) gpi();
p->handle = h;
p->filename = filename;
IN = p;
} else if (gpi = dlsym(h, "get_sound_plugin_info")) {
sound_pi *p;
p = (sound_pi *) gpi();
p->handle = h;
p->filename = filename;
*/
} else {
dlclose(h);
return 0;
}
} else {
fprintf(stderr, "%s\n", dlerror());
return 0;
}
return 1;
}
void plugin_unload(void *handle)
{
dlclose(handle);
}
#else
input_pi Winput;
int IN_Init();
void IN_Move(usercmd_t *);
void IN_Commands();
void Sys_SendKeyEvents();
void IN_Shutdown (void);
int plugin_load(char *filename)
{
IN = &Winput;
Winput.description = "Windows Input";
Winput.Init = IN_Init;
Winput.Move = IN_Move;
Winput.Commands = IN_Frame;
Winput.SendKeyEvents = IN_SendKeyEvents;
Winput.Shutdown = IN_Shutdown;
return 1;
}
void plugin_unload(void *handle)
{
}
#endif