representRedisNodeFlags() moved into right code section.

The funciton was also modified in order to be more standalone and
produce an output without trailing spaces, making the reuse simpler.
The global variable was renamed in cammel case as most other Redis
globals, except the main ones we refer too many times, like 'server'.

src/cluster.c

@@ -72,39 +72,7 @@ void resetManualFailover(void);
 void clusterCloseAllSlots(void);
 void clusterSetNodeAsMaster(clusterNode *n);
 void clusterDelNode(clusterNode *delnode);
-
-struct redisNodeFlags {
-    uint16_t flag;
-    char     *attr;
-};
-
-static struct redisNodeFlags nodeflags[] = {
-    {REDIS_NODE_MYSELF,    "myself,"},
-    {REDIS_NODE_MASTER,    "master,"},
-    {REDIS_NODE_SLAVE,     "slave,"},
-    {REDIS_NODE_PFAIL,     "fail?,"},
-    {REDIS_NODE_FAIL,      "fail,"},
-    {REDIS_NODE_HANDSHAKE, "handshake,"},
-    {REDIS_NODE_NOADDR,    "noaddr,"}
-};
-
-sds representRedisNodeFlags(sds ci, uint16_t flags) {
-    if (flags == 0) {
-        ci = sdscat(ci,"noflags");
-    } else {
-        int size = sizeof(nodeflags) / sizeof(struct redisNodeFlags);
-        for (int i=0; i < size; i++) {
-            struct redisNodeFlags *nodeflag = nodeflags + i;
-            if (flags & nodeflag->flag) {
-                ci = sdscat(ci, nodeflag->attr);
-            }
-        }
-
-        if (ci[sdslen(ci)-1] == ',') ci[sdslen(ci)-1] = ' ';
-    }
-
-    return ci;
-}
+sds representRedisNodeFlags(sds ci, uint16_t flags);
 
 /* -----------------------------------------------------------------------------
  * Initialization
@@ -1180,9 +1148,9 @@ void clusterProcessGossipSection(clusterMsg *hdr, clusterLink *link) {
     while(count--) {
         uint16_t flags = ntohs(g->flags);
         clusterNode *node;
+        sds ci;
 
-        sds ci = sdsempty();
-        ci = representRedisNodeFlags(ci, flags);
+        ci = representRedisNodeFlags(sdsempty(), flags);
         redisLog(REDIS_DEBUG,"GOSSIP %.40s %s:%d %s",
             g->nodename,
             g->ip,
@@ -3361,9 +3329,40 @@ void clusterSetMaster(clusterNode *n) {
 }
 
 /* -----------------------------------------------------------------------------
- * CLUSTER command
+ * Nodes to string representation functions.
  * -------------------------------------------------------------------------- */
 
+struct redisNodeFlags {
+    uint16_t flag;
+    char *name;
+};
+
+static struct redisNodeFlags redisNodeFlagsTable[] = {
+    {REDIS_NODE_MYSELF,    "myself,"},
+    {REDIS_NODE_MASTER,    "master,"},
+    {REDIS_NODE_SLAVE,     "slave,"},
+    {REDIS_NODE_PFAIL,     "fail?,"},
+    {REDIS_NODE_FAIL,      "fail,"},
+    {REDIS_NODE_HANDSHAKE, "handshake,"},
+    {REDIS_NODE_NOADDR,    "noaddr,"}
+};
+
+/* Concatenate the comma separated list of node flags to the given SDS
+ * string 'ci'. */
+sds representRedisNodeFlags(sds ci, uint16_t flags) {
+    if (flags == 0) {
+        ci = sdscat(ci,"noflags,");
+    } else {
+        int i, size = sizeof(redisNodeFlagsTable)/sizeof(struct redisNodeFlags);
+        for (i = 0; i < size; i++) {
+            struct redisNodeFlags *nodeflag = redisNodeFlagsTable + i;
+            if (flags & nodeflag->flag) ci = sdscat(ci, nodeflag->name);
+        }
+    }
+    sdsIncrLen(ci,-1); /* Remove trailing comma. */
+    return ci;
+}
+
 /* Generate a csv-alike representation of the specified cluster node.
  * See clusterGenNodesDescription() top comment for more information.
  *
@@ -3383,9 +3382,9 @@ sds clusterGenNodeDescription(clusterNode *node) {
 
     /* Slave of... or just "-" */
     if (node->slaveof)
-        ci = sdscatprintf(ci,"%.40s ",node->slaveof->name);
+        ci = sdscatprintf(ci," %.40s ",node->slaveof->name);
     else
-        ci = sdscatprintf(ci,"- ");
+        ci = sdscatlen(ci," - ",3);
 
     /* Latency from the POV of this node, link status */
     ci = sdscatprintf(ci,"%lld %lld %llu %s",
@@ -3463,6 +3462,10 @@ sds clusterGenNodesDescription(int filter) {
     return ci;
 }
 
+/* -----------------------------------------------------------------------------
+ * CLUSTER command
+ * -------------------------------------------------------------------------- */
+
 int getSlotOrReply(redisClient *c, robj *o) {
     long long slot;