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// See LICENSE for license details.
#include "extension.h"
#include <string>
#include <map>
#include <dlfcn.h>
static std::map<std::string, std::function<extension_t*()>>& extensions()
{
static std::map<std::string, std::function<extension_t*()>> v;
return v;
}
void register_extension(const char* name, std::function<extension_t*()> f)
{
extensions()[name] = f;
}
std::function<extension_t*()> find_extension(const char* name)
{
if (!extensions().count(name)) {
// try to find extension xyz by loading libxyz.so
std::string libname = std::string("lib") + name + ".so";
std::string libdefault = "libcustomext.so";
bool is_default = false;
auto dlh = dlopen(libname.c_str(), RTLD_LAZY);
if (!dlh) {
dlh = dlopen(libdefault.c_str(), RTLD_LAZY);
if (!dlh) {
fprintf(stderr, "couldn't find shared library either '%s' or '%s')\n",
libname.c_str(), libdefault.c_str());
exit(-1);
}
is_default = true;
}
if (!extensions().count(name)) {
fprintf(stderr, "couldn't find extension '%s' in shared library '%s'\n",
name, is_default ? libdefault.c_str() : libname.c_str());
exit(-1);
}
}
return extensions()[name];
}
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