update crawl loop conditions

src/index.php

@@ -143,14 +143,27 @@ if (isset($argv[1]))
     }
 }
 
+// Init crawl delay from argument or use default value
+$delay = empty($argv[0]) ? 60 : (int) $argv[0];
+
 // Begin crawler
-while ($blocks = $kevacoin->getBlockCount())
+while (true)
 {
-    // Indicate new queue begin
-    echo sprintf(
-        "Found %d new blocks, begin crawl queue...\r",
-        $delay
-    );
+    // Get total blocks to crawl
+    if (!$blocks = $kevacoin->getBlockCount())
+    {
+        // Dump errors
+        if ($error = $kevacoin->getError()) {
+            var_dump(
+                $error
+            );
+        }
+
+        echo sprintf(
+            "Blocks not found!\r",
+            $delay
+        );
+    }
 
     // Begin block index
     for ($block = $state + 1; $block <= $blocks; $block++)
@@ -403,20 +416,8 @@ while ($blocks = $kevacoin->getBlockCount())
     }
 
     // Dump results
-    echo "Crawl operation completed!\r";
-
-    // Dump errors
-    if ($error = $kevacoin->getError()) {
-        var_dump(
-            $error
-        );
-    }
-
-    // Apply delay argument, or use default value
-    $delay = empty($argv[0]) ? 60 : (int) $argv[0];
-
     echo sprintf(
-        "Await %d seconds for new blocks...\r",
+        "Crawl queue completed, await %d seconds for new blocks...\r",
         $delay
     );