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#include "execname.hh"
#if defined(_WIN32)
#include <windows.h>
fs::path execname() {
char buf[1024];
DWORD ret = GetModuleFileName(NULL, buf, sizeof(buf));
if (ret == 0 || ret == sizeof(buf)) return std::string();
return buf;
}
#elif defined(__APPLE__)
#include <mach-o/dyld.h>
fs::path execname() {
char buf[1024];
uint32_t size = sizeof(buf);
int ret = _NSGetExecutablePath(buf, &size);
if (ret != 0) return fs::path();
return buf;
}
#elif defined(sun) || defined(__sun)
#include <stdlib.h>
fs::path execname() {
return getexecname();
}
#elif defined(__FreeBSD__)
#include <sys/sysctl.h>
fs::path execname() {
int mib[4];
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PATHNAME;
mib[3] = -1;
char buf[1024];
size_t maxchars = sizeof(buf) - 1;
size_t size = maxchars;
sysctl(mib, 4, buf, &size, NULL, 0);
if (size == 0 || size >= maxchars) return fs::path();
buf[size] = '\0';
return buf;
}
#elif defined(__linux__)
#include <unistd.h>
fs::path execname() {
char buf[1024];
ssize_t maxchars = sizeof(buf) - 1;
ssize_t size = readlink("/proc/self/exe", buf, sizeof(buf));
if (size <= 0 || size >= maxchars) return fs::path();
buf[size] = '\0';
return buf;
}
#else
fs::path execname() {
return fs::path();
}
#endif
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