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re-nest parse_fetch_rsp()

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prefer early exits over else branches, which is easier to follow.
This commit is contained in:
Oswald Buddenhagen 2019-11-22 16:54:31 +01:00
parent 81c4bfeefa
commit 47b477b3fb
1 changed files with 54 additions and 58 deletions
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112
src/drv_imap.c
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@ -1056,65 +1056,61 @@ parse_fetch_rsp( imap_store_t *ctx, list_t *list, char *s ATTR_UNUSED )
}
for (tmp = list->child; tmp; tmp = tmp->next) {
if (is_atom( tmp )) {
if (!strcmp( "UID", tmp->val )) {
tmp = tmp->next;
if (!is_atom( tmp ) || (uid = strtoul( tmp->val, &ep, 10 ), *ep)) {
error( "IMAP error: unable to parse UID\n" );
goto ffail;
}
continue; // This *is* the UID.
} else if (!strcmp( "FLAGS", tmp->val )) {
tmp = tmp->next;
if (is_list( tmp )) {
if (!parse_fetched_flags( tmp->child, &mask, &status ))
goto ffail;
continue; // This may legitimately come without UID.
} else {
error( "IMAP error: unable to parse FLAGS\n" );
goto ffail;
}
} else if (!strcmp( "INTERNALDATE", tmp->val )) {
tmp = tmp->next;
if (is_atom( tmp )) {
if ((date = parse_date( tmp->val )) == -1) {
error( "IMAP error: unable to parse INTERNALDATE format\n" );
goto ffail;
}
} else {
error( "IMAP error: unable to parse INTERNALDATE\n" );
goto ffail;
}
} else if (!strcmp( "RFC822.SIZE", tmp->val )) {
tmp = tmp->next;
if (!is_atom( tmp ) || (size = strtoul( tmp->val, &ep, 10 ), *ep)) {
error( "IMAP error: unable to parse RFC822.SIZE\n" );
goto ffail;
}
} else if (!strcmp( "BODY[]", tmp->val )) {
tmp = tmp->next;
if (is_atom( tmp )) {
body = tmp;
} else {
error( "IMAP error: unable to parse BODY[]\n" );
goto ffail;
}
} else if (!strcmp( "BODY[HEADER.FIELDS", tmp->val )) {
tmp = tmp->next;
if (is_list( tmp )) {
tmp = tmp->next;
if (!is_atom( tmp ) || strcmp( tmp->val, "]" ))
goto bfail;
tmp = tmp->next;
if (!is_atom( tmp ))
goto bfail;
parse_fetched_header( tmp->val, uid, &tuid, &msgid );
} else {
bfail:
error( "IMAP error: unable to parse BODY[HEADER.FIELDS ...]\n" );
goto ffail;
}
if (!is_atom( tmp ))
continue;
if (!strcmp( "UID", tmp->val )) {
tmp = tmp->next;
if (!is_atom( tmp ) || (uid = strtoul( tmp->val, &ep, 10 ), *ep)) {
error( "IMAP error: unable to parse UID\n" );
goto ffail;
}
continue; // This *is* the UID.
} else if (!strcmp( "FLAGS", tmp->val )) {
tmp = tmp->next;
if (!is_list( tmp )) {
error( "IMAP error: unable to parse FLAGS\n" );
goto ffail;
}
if (!parse_fetched_flags( tmp->child, &mask, &status ))
goto ffail;
continue; // This may legitimately come without UID.
} else if (!strcmp( "INTERNALDATE", tmp->val )) {
tmp = tmp->next;
if (!is_atom( tmp )) {
error( "IMAP error: unable to parse INTERNALDATE\n" );
goto ffail;
}
if ((date = parse_date( tmp->val )) == -1) {
error( "IMAP error: unable to parse INTERNALDATE format\n" );
goto ffail;
}
} else if (!strcmp( "RFC822.SIZE", tmp->val )) {
tmp = tmp->next;
if (!is_atom( tmp ) || (size = strtoul( tmp->val, &ep, 10 ), *ep)) {
error( "IMAP error: unable to parse RFC822.SIZE\n" );
goto ffail;
}
} else if (!strcmp( "BODY[]", tmp->val )) {
tmp = tmp->next;
if (!is_atom( tmp )) {
error( "IMAP error: unable to parse BODY[]\n" );
goto ffail;
}
body = tmp;
} else if (!strcmp( "BODY[HEADER.FIELDS", tmp->val )) {
tmp = tmp->next;
if (!is_list( tmp )) {
bfail:
error( "IMAP error: unable to parse BODY[HEADER.FIELDS ...]\n" );
goto ffail;
}
tmp = tmp->next;
if (!is_atom( tmp ) || strcmp( tmp->val, "]" ))
goto bfail;
tmp = tmp->next;
if (!is_atom( tmp ))
goto bfail;
parse_fetched_header( tmp->val, uid, &tuid, &msgid );
}
need_uid = 1;
}