bpcopy.c

int pbcopy(int argc, char** argv) {
    if (argc == 1) {
        // no arguments, listen to stdin
        if (currentSession == NULL) {
            currentSession = [[sessionParameters alloc] init];
        }
        const int bufsize = 1024;
        char buffer[bufsize];
        NSMutableData* data = [[NSMutableData alloc] init];
      
        ssize_t count = 0;
        while ((count = read(fileno(thread_stdin), buffer, bufsize-1))) {
            [data appendBytes:buffer length:count];
        }
      
        NSString* result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

        if (!result) {
            return 1;
        }

        [UIPasteboard generalPasteboard].string = result;
    } else {
        // threre are arguments, concatenate and paste:
        char* cmd = concatenateArgv(argv + 1);
        [UIPasteboard generalPasteboard].string = @(cmd);
        free(cmd);
    }
    return 0;
}