Add makeseeds.py utility from bitcoin

diff --git a/contrib/seeds/makeseeds.py b/contrib/seeds/makeseeds.py
new file mode 100755 (executable)
index 0000000..ef1190a
--- /dev/null
+++ b/contrib/seeds/makeseeds.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+
+NSEEDS=600
+
+import re
+import sys
+from subprocess import check_output
+
+def main():
+    lines = sys.stdin.readlines()
+
+    ips = []
+    pattern = re.compile(r"^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3}):7777")
+    for line in lines:
+        m = pattern.match(line)
+        if m is None:
+            continue
+        ip = 0
+        for i in range(0,4):
+            ip = ip + (int(m.group(i+1)) << (8*(i)))
+        if ip == 0:
+            continue
+        ips.append(ip)
+
+    for row in range(0, min(NSEEDS,len(ips)), 8):
+        print "    " + ", ".join([ "0x%08x"%i for i in ips[row:row+8] ]) + ","
+
+if __name__ == '__main__':
+    main()