files brynjarh23 found on the basement computer

Software_folder/replicatorg-0025-windows/replicatorg-0025/scripts/s3g-decompiler.py

@@ -0,0 +1,79 @@
+#!/usr/bin/python
+import struct
+import sys
+
+def parseToolAction():
+    global s3gFile
+    packetStr = s3gFile.read(3)
+    if len(packetStr) != 3:
+        raise "Incomplete s3g file during tool command parse"
+    (index,command,payload) = struct.unpack("<BBB",packetStr)
+    contents = s3gFile.read(payload)
+    if len(contents) != payload:
+        raise "Incomplete s3g file: tool packet truncated"
+    return (index,command,contents)
+
+def printToolAction(tuple):
+    return "Command %i for tool %i (len %i)" % (tuple[1],tuple[0],len(tuple[2]))
+
+# Command table entries consist of:
+# * The key: the integer command code
+# * A tuple:
+#   * idx 0: the python struct description of the rest of the data,
+#            of a function that unpacks the remaining data from the
+#            stream
+#   * idx 1: either a format string that will take the tuple of unpacked
+#            data, or a function that takes the tuple as input and returns
+#            a string
+
+# REMINDER: all values are little-endian. Struct strings with multibyte
+# types should begin with "<".
+# For a refresher on Python struct syntax, see here:
+# http://docs.python.org/library/struct.html
+commandTable = {
+    129: ("<iiiI","Absolute move to (%i,%i,%i) at DDA %i"),
+    130: ("<iii","Machine position set as (%i,%i,%i)"),
+    131: ("<BIH","Home minimum on %X, feedrate %i, timeout %i s"),
+    132: ("<BIH","Home maximum on %X, feedrate %i, timeout %i s"),
+    133: ("<I","Delay of %i us"),
+    134: ("<B","Switch to tool %i"),
+    135: ("<BHH","Wait for tool %i (%i ms between polls, %i s timeout"),
+    136: (parseToolAction, printToolAction),
+    137: ("<B", "Enable/disable axes %X"),
+    138: ("<H", "User block on ID %i"),
+    139: ("<iiiiiI","Absolute move to (%i,%i,%i,%i,%i) at DDA %i"),
+    140: ("<iiiii","Machine position set as (%i,%i,%i,%i,%i)"),
+    141: ("<BHH","Wait for platform %i (%i ms between polls, %i s timeout)"),
+    142: ("<iiiiiIB","Move to (%i,%i,%i,%i,%i) in %i us (relative: %X)"),
+    143: ("<b","Store home position for axes %d"),
+    144: ("<b","Recall home position for axes %d"),
+}
+
+def parseNextCommand():
+    """Parse and handle the next command.  Returns
+    True for success, False on EOF, and raises an
+    exception on corrupt data."""
+    global s3gFile
+    commandStr = s3gFile.read(1)
+    if len(commandStr) == 0:
+        print "EOF"
+        return False
+    (command) = struct.unpack("B",commandStr)
+    (parse, disp) = commandTable[command[0]]
+    if type(parse) == type(""):
+        packetLen = struct.calcsize(parse)
+        packetData = s3gFile.read(packetLen)
+        if len(packetData) != packetLen:
+            raise "Packet incomplete"
+        parsed = struct.unpack(parse,packetData)
+    else:
+        parsed = parse()
+    if type(disp) == type(""):
+        print disp % parsed
+    else:
+        disp(parsed)
+    return True
+
+s3gFile = open(sys.argv[1],'rb')
+while parseNextCommand():
+    pass