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insert-usb-ids.py

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 parse-bytecode

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insert-usb-ids.py

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# Reads the USB VID and PID from the file specifed by sys.arg[1] and then

# inserts those values into the template file specified by sys.argv[2],

# printing the result to stdout

from __future__ import print_function

import sys

import re

import string

needed_keys = ('USB_PID_CDC_MSC', 'USB_PID_CDC_HID', 'USB_PID_CDC', 'USB_VID')

def parse_usb_ids(filename):

rv = dict()

for line in open(filename).readlines():

line = line.rstrip('\r\n')

match = re.match('^#define\s+(\w+)\s+\(0x([0-9A-Fa-f]+)\)$', line)

if match and match.group(1).startswith('USBD_'):

key = match.group(1).replace('USBD', 'USB')

val = match.group(2)

print("key =", key, "val =", val)

if key in needed_keys:

rv[key] = val

for k in needed_keys:

if k not in rv:

raise Exception("Unable to parse %s from %s" % (k, filename))

return rv

if __name__ == "__main__":

usb_ids_file = sys.argv[1]

template_file = sys.argv[2]

replacements = parse_usb_ids(usb_ids_file)

for line in open(template_file, 'r').readlines():

print(string.Template(line).safe_substitute(replacements), end='')