pack-bitmap: make bitmap header handling hash agnostic

diff --git a/parse-options.h b/parse-options.h
index ce75278804fcf090d072ed43f952fa7a3c0d63c5..74cce4e7fce74237292e0b34bec2b02e0e945ca7 100644 (file)
--- a/parse-options.h
+++ b/parse-options.h
@@ -134,6 +134,8 @@ struct option {
 #define OPT_SET_INT_F(s, l, v, h, i, f) { OPTION_SET_INT, (s), (l), (v), NULL, \
                                          (h), PARSE_OPT_NOARG | (f), NULL, (i) }
 #define OPT_BOOL_F(s, l, v, h, f)   OPT_SET_INT_F(s, l, v, h, 1, f)
+#define OPT_CALLBACK_F(s, l, v, a, h, f, cb)                   \
+       { OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), (cb) }
 
 #define OPT_END()                   { OPTION_END }
 #define OPT_ARGUMENT(l, h)          { OPTION_ARGUMENT, 0, (l), NULL, NULL, \
@@ -164,8 +166,7 @@ struct option {
 #define OPT_EXPIRY_DATE(s, l, v, h) \
        { OPTION_CALLBACK, (s), (l), (v), N_("expiry-date"),(h), 0,     \
          parse_opt_expiry_date_cb }
-#define OPT_CALLBACK(s, l, v, a, h, f) \
-       { OPTION_CALLBACK, (s), (l), (v), (a), (h), 0, (f) }
+#define OPT_CALLBACK(s, l, v, a, h, f) OPT_CALLBACK_F(s, l, v, a, h, 0, f)
 #define OPT_NUMBER_CALLBACK(v, h, f) \
        { OPTION_NUMBER, 0, NULL, (v), NULL, (h), \
          PARSE_OPT_NOARG | PARSE_OPT_NONEG, (f) }
@@ -221,6 +222,17 @@ const char *optname(const struct option *opt, int flags);
                BUG("option callback does not expect an argument"); \
 } while (0)
 
+/*
+ * Similar to the assertions above, but checks that "arg" is always non-NULL.
+ * This assertion also implies BUG_ON_OPT_NEG(), letting you declare both
+ * assertions in a single line.
+ */
+#define BUG_ON_OPT_NEG_NOARG(unset, arg) do { \
+       BUG_ON_OPT_NEG(unset); \
+       if(!(arg)) \
+               BUG("option callback expects an argument"); \
+} while(0)
+
 /*----- incremental advanced APIs -----*/
 
 enum parse_opt_result {