turn debug() functions into macros

this makes calling them with more expensive arguments efficient without
wrapping them into additional conditionals.

src/common.h

@@ -116,8 +116,21 @@ void stats( void );
 
 /* util.c */
 
-void ATTR_PRINTFLIKE(2, 0) vdebug( int, const char *, va_list va );
-void ATTR_PRINTFLIKE(2, 0) vdebugn( int, const char *, va_list va );
+#ifdef DEBUG_FLAG
+#  define debug(...) \
+	do { \
+		if (DFlags & DEBUG_FLAG) \
+			print( __VA_ARGS__ ); \
+	} while (0)
+#  define debugn(...) \
+	do { \
+		if (DFlags & DEBUG_FLAG) \
+			printn( __VA_ARGS__ ); \
+	} while (0)
+#endif
+
+void ATTR_PRINTFLIKE(1, 2) print( const char *, ... );
+void ATTR_PRINTFLIKE(1, 2) printn( const char *, ... );
 void ATTR_PRINTFLIKE(1, 2) info( const char *, ... );
 void ATTR_PRINTFLIKE(1, 2) infon( const char *, ... );
 void ATTR_PRINTFLIKE(1, 2) progress( const char *, ... );

src/drv_maildir.c

@@ -6,6 +6,8 @@
  * mbsync - mailbox synchronizer
  */
 
+#define DEBUG_FLAG DEBUG_MAILDIR
+
 #include "driver.h"
 
 #include <ctype.h>
@@ -85,16 +87,6 @@ static struct flock lck;
 
 static int MaildirCount;
 
-static void ATTR_PRINTFLIKE(1, 2)
-debug( const char *msg, ... )
-{
-	va_list va;
-
-	va_start( va, msg );
-	vdebug( DEBUG_MAILDIR, msg, va );
-	va_end( va );
-}
-
 /* Keep the mailbox driver flag definitions in sync: */
 /* grep for MAILBOX_DRIVER_FLAG */
 /* The order is according to alphabetical maildir flag sort */

src/drv_proxy.c

@@ -4,6 +4,8 @@
  * mbsync - mailbox synchronizer
  */
 
+#define DEBUG_FLAG DEBUG_DRV
+
 #include "driver.h"
 
 typedef struct gen_cmd gen_cmd_t;
@@ -25,26 +27,6 @@ typedef union proxy_store {
 	};
 } proxy_store_t;
 
-static void ATTR_PRINTFLIKE(1, 2)
-debug( const char *msg, ... )
-{
-	va_list va;
-
-	va_start( va, msg );
-	vdebug( DEBUG_DRV, msg, va );
-	va_end( va );
-}
-
-static void ATTR_PRINTFLIKE(1, 2)
-debugn( const char *msg, ... )
-{
-	va_list va;
-
-	va_start( va, msg );
-	vdebugn( DEBUG_DRV, msg, va );
-	va_end( va );
-}
-
 /* Keep the mailbox driver flag definitions in sync: */
 /* grep for MAILBOX_DRIVER_FLAG */
 /* The order is according to alphabetical maildir flag sort */

src/main.c

@@ -5,6 +5,8 @@
  * mbsync - mailbox synchronizer
  */
 
+#define DEBUG_FLAG DEBUG_MAIN
+
 #include "sync.h"
 
 #include <fcntl.h>
@@ -87,16 +89,6 @@ PACKAGE " " VERSION " - mailbox synchronizer\n"
 	exit( code );
 }
 
-static void ATTR_PRINTFLIKE(1, 2)
-debug( const char *msg, ... )
-{
-	va_list va;
-
-	va_start( va, msg );
-	vdebug( DEBUG_MAIN, msg, va );
-	va_end( va );
-}
-
 #ifdef __linux__
 static void ATTR_NORETURN
 crashHandler( int n )

src/sync.c

@@ -5,6 +5,8 @@
  * mbsync - mailbox synchronizer
  */
 
+#define DEBUG_FLAG DEBUG_SYNC
+
 #include "sync.h"
 
 #include <fcntl.h>
@@ -30,26 +32,6 @@ int trash_total[2], trash_done[2];
 
 const char *str_fn[] = { "far side", "near side" }, *str_hl[] = { "push", "pull" };
 
-static void ATTR_PRINTFLIKE(1, 2)
-debug( const char *msg, ... )
-{
-	va_list va;
-
-	va_start( va, msg );
-	vdebug( DEBUG_SYNC, msg, va );
-	va_end( va );
-}
-
-static void ATTR_PRINTFLIKE(1, 2)
-debugn( const char *msg, ... )
-{
-	va_list va;
-
-	va_start( va, msg );
-	vdebugn( DEBUG_SYNC, msg, va );
-	va_end( va );
-}
-
 static void
 Fclose( FILE *f, int safe )
 {

src/util.c

@@ -33,34 +33,38 @@ flushn( void )
 }
 
 static void ATTR_PRINTFLIKE(1, 0)
-printn( const char *msg, va_list va )
+vprint( const char *msg, va_list va )
 {
-	if (*msg == '\v')
-		msg++;
-	else
-		flushn();
 	vprintf( msg, va );
 	fflush( stdout );
+	need_nl = 0;
 }
 
 void
-vdebug( int cat, const char *msg, va_list va )
+print( const char *msg, ... )
 {
-	if (DFlags & cat) {
-		vprintf( msg, va );
-		fflush( stdout );
-		need_nl = 0;
-	}
+	va_list va;
+
+	va_start( va, msg );
+	vprint( msg, va );
+	va_end( va );
 }
 
-void
-vdebugn( int cat, const char *msg, va_list va )
+static void ATTR_PRINTFLIKE(1, 0)
+vprintn( const char *msg, va_list va )
 {
-	if (DFlags & cat) {
-		vprintf( msg, va );
-		fflush( stdout );
+	vprint( msg, va );
 	need_nl = 1;
 }
+
+void
+printn( const char *msg, ... )
+{
+	va_list va;
+
+	va_start( va, msg );
+	vprintn( msg, va );
+	va_end( va );
 }
 
 void
@@ -75,6 +79,16 @@ progress( const char *msg, ... )
 	need_nl = 1;
 }
 
+static void ATTR_PRINTFLIKE(1, 0)
+nvprint( const char *msg, va_list va )
+{
+	if (*msg == '\v')
+		msg++;
+	else
+		flushn();
+	vprint( msg, va );
+}
+
 void
 info( const char *msg, ... )
 {
@@ -82,9 +96,8 @@ info( const char *msg, ... )
 
 	if (DFlags & VERBOSE) {
 		va_start( va, msg );
-		printn( msg, va );
+		nvprint( msg, va );
 		va_end( va );
-		need_nl = 0;
 	}
 }
 
@@ -95,7 +108,7 @@ infon( const char *msg, ... )
 
 	if (DFlags & VERBOSE) {
 		va_start( va, msg );
-		printn( msg, va );
+		nvprint( msg, va );
 		va_end( va );
 		need_nl = 1;
 	}
@@ -108,9 +121,8 @@ notice( const char *msg, ... )
 
 	if (!(DFlags & QUIET)) {
 		va_start( va, msg );
-		printn( msg, va );
+		nvprint( msg, va );
 		va_end( va );
-		need_nl = 0;
 	}
 }