On Sat, 7 Oct 2006 03:37:07 -0700
"Wesley Smith" <wesley.hoke@gmail.com> wrote:
> So that works for windows, but is there a POSIX or another OS agnostic
> method for doing this?
I don't know about one, but it would be nice to have such a feature.
Some time ago I did some experiments, and you can do the following in
MacOSX, it will return the path of the executable image:
#include <mach-o/dyld.h>
#include <string.h>
char* get_exepath(void)
{
size_t sz = 0;
char *buf;
char *sl;
_NSGetExecutablePath(NULL, &sz);
buf = (char*) malloc(++sz);
_NSGetExecutablePath(buf, &sz);
sl = strrchr(buf, '/');
*(sl + 1) = '0円';
return buf;
}
Under Linux and maybe other systems with a similar "/proc" layout you
can use the following (of course, this needs "/proc" mounted!):
#include <unistd.h>
#include <string.h>
#include <errno.h>
char* get_exepath(void)
{
size_t sz = 100;
char sym[1024];
char *buf = (char*) malloc(sz);
char *sl;
snprintf(sym, "/proc/%i/exe", getpid());
for (;;) {
int ret = readlink(sym, buf, sz);
if (ret == -1) return NULL;
else if (ret < sz) {
buf[ret] = '0円';
break;
}
else {
sz += 50;
buf = (char*) realloc(buf, sz);
}
}
sl = strrchr(buf, '/');
*(sl + 1) = '0円';
return buf;
}
Just my two cents, hope this is useful for you ;-)
--
Futility Factor: No experiment is ever a complete failure - it can
always serve as a negative example.
--
"When I die, I want a tombstone that says "GAME OVER" - Ton Richters
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