script to split squashed t42 file into a directory of separate t42 pages

t42split

@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+
+import sys
+import os
+
+from teletext.t42.pipeline import reader, make_service
+from teletext.t42.packet import Packet
+
+if sys.platform == "win32":
+    import os, msvcrt
+    msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
+
+service = make_service(reader(open(sys.argv[1], 'rb')))
+
+for magazineno,magazine in service.magazines.iteritems():
+    for pageno,page in magazine.pages.iteritems():
+        for subpageno,subpage in page.subpages.iteritems():
+            if magazineno == 0:
+                mag = 8
+            else:
+                mag = magazineno
+            outfile = open(os.path.join(sys.argv[2], 'P%d%02X-%04X.t42' % (mag, pageno, subpageno)), 'wb')
+            subpagepackets = subpage.to_packets(magazineno, pageno, subpageno, magazine.header(magazineno, subpage))
+            for i in subpagepackets:
+                outfile.write(i.to_bytes())
+            outfile.close()