struct passwd *getpwent(void)
/* Read one entry from the password file. */
{
char *p;
/* Open the file if not yet open. */
if (pwfd < 0 && setpwent() < 0) return nil;
/* Until a good line is read. */
for (;;) {
if (!getline()) return nil; /* EOF or corrupt. */
if ((entry.pw_name= scan_colon()) == nil) continue;
if ((entry.pw_passwd= scan_colon()) == nil) continue;
if ((p= scan_colon()) == nil) continue;
entry.pw_uid= strtol(p, nil, 0);
if ((p= scan_colon()) == nil) continue;
entry.pw_gid= strtol(p, nil, 0);
if ((entry.pw_gecos= scan_colon()) == nil) continue;
if ((entry.pw_dir= scan_colon()) == nil) continue;
if ((entry.pw_shell= scan_colon()) == nil) continue;
if (*lineptr == 0) return &entry;
}
}
void Scanner::scan() {
char token = file.get();
while (token != EOF && error == -1) {
switch (token) {
case ',':
scan_punctuation(token, Token::COMMA);
break;
case '.':
scan_punctuation(token, Token::PERIOD);
break;
case '?':
scan_punctuation(token, Token::Q_MARK);
break;
case '(':
scan_punctuation(token, Token::LEFT_PAREN);
break;
case ')':
scan_punctuation(token, Token::RIGHT_PAREN);
break;
case ':':
scan_colon();
break;
case '#':
scan_comment();
break;
case '\'':
scan_string();
break;
case '\n':
line++;
break;
default:
scan_id(token);
break;
}
token = file.get();
}
if (error == -1) {
line++;
add_token("", Token::END);
}
}