use a table file for vmod enum to c enum

lib/libvmod_blob/Makefile.am

@@ -10,7 +10,8 @@ libvmod_blob_la_SOURCES = \
 	hex.c \
 	url.c \
 	wb.h \
-	wb.c
+	wb.c \
+	tbl_encodings.h
 
 base64.o: base64.c base64.h
 

lib/libvmod_blob/tbl_encodings.h

+VMODENUM(BASE64)
+VMODENUM(BASE64URL)
+VMODENUM(BASE64URLNOPAD)
+VMODENUM(HEX)
+VMODENUM(IDENTITY)
+VMODENUM(URL)
+#undef VMODENUM

lib/libvmod_blob/vmod_blob.c

@@ -119,12 +119,8 @@ static const struct vmod_priv null_blob[1] =
 static enum encoding
 parse_encoding(VCL_ENUM e)
 {
-	if (e == vmod_enum_BASE64)		return(BASE64);
-	if (e == vmod_enum_BASE64URL)		return(BASE64URL);
-	if (e == vmod_enum_BASE64URLNOPAD)	return(BASE64URLNOPAD);
-	if (e == vmod_enum_HEX)			return(HEX);
-	if (e == vmod_enum_IDENTITY)		return(IDENTITY);
-	if (e == vmod_enum_URL)			return(URL);
+#define VMODENUM(n) if (e == vmod_enum_ ## n) return(n);
+#include "tbl_encodings.h"
 	WRONG("illegal encoding enum");
 }