int base64_decode_atom(const char *atom, unsigned char *out);
struct bufchain_granule;
-typedef struct bufchain_tag {
+struct bufchain_tag {
struct bufchain_granule *head, *tail;
int buffersize; /* current amount of buffered data */
-} bufchain;
+};
+#ifndef BUFCHAIN_TYPEDEF
+typedef struct bufchain_tag bufchain; /* rest of declaration in misc.c */
+#define BUFCHAIN_TYPEDEF
+#endif
void bufchain_init(bufchain *ch);
void bufchain_clear(bufchain *ch);
(cp)[0] = (unsigned char)((value) >> 8), \
(cp)[1] = (unsigned char)(value) )
+/* Replace NULL with the empty string, permitting an idiom in which we
+ * get a string (pointer,length) pair that might be NULL,0 and can
+ * then safely say things like printf("%.*s", length, NULLTOEMPTY(ptr)) */
+#define NULLTOEMPTY(s) ((s)?(s):"")
+
#endif