Allow querying asset params for a single asset chain

listassetchainparams

@@ -1,6 +1,12 @@
 #!/usr/bin/env python2
 import os
 import json
+import sys
+
+if len(sys.argv) >= 2:
+    specific_chain = sys.argv[1]
+else:
+    specific_chain = 0
 
 def format_param(param, value):
     return '-' + param + '=' + value
@@ -9,12 +15,14 @@ script_dir = os.path.dirname(__file__)
 with open(script_dir + '/assetchains.json') as file:
     assetchains = json.load(file)
 
-for chain in assetchains:
-    params = []
-    for param, value in chain.items():
-        if isinstance(value, list):
-            for dupe_value in value:
-                params.append(format_param(param, dupe_value))
-        else:
-            params.append(format_param(param, value))
-    print(' '.join(params))
+    for chain in assetchains:
+        if specific_chain != 0 and chain["ac_name"] != specific_chain:
+            continue
+        params = []
+        for param, value in chain.items():
+            if isinstance(value, list):
+                for dupe_value in value:
+                    params.append(format_param(param, dupe_value))
+            else:
+                params.append(format_param(param, value))
+        print(' '.join(params))