callmemaybe.m

#include <dlfcn.h>
#include <execinfo.h>


// Uso: callmemaybe(2) así por ser…

__attribute__((noinline)) NSString *callmemaybe(int item) {
    void *bt[1024];
    int bt_size;
    
    bt_size = backtrace(bt, 1024);
    if (bt_size > (item + 1)) {
        Dl_info info;
        dladdr(bt[item], &info);
        if (info.dli_sname != NULL) {
            NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"-\\[(\\w+).*"
                                                                                  options:NSRegularExpressionCaseInsensitive error:nil];
            NSString *ret = [NSString stringWithUTF8String:info.dli_sname];
            return [regex stringByReplacingMatchesInString:[NSString stringWithUTF8String:info.dli_sname]
                                                   options:0
                                                     range:NSMakeRange(0, [ret length])
                                              withTemplate:@"[$1]"];
        }
    }

    return @"NPI";
}