scripts/acpi_extract_preprocess.py

   1 #!/usr/bin/python
   2 # Copyright (C) 2011 Red Hat, Inc., Michael S. Tsirkin <mst@redhat.com>
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License along
  15 # with this program; if not, see <http://www.gnu.org/licenses/>.
  16
  17 # Read a preprocessed ASL listing and put each ACPI_EXTRACT
  18 # directive in a comment, to make iasl skip it.
  19 # We also put each directive on a new line, the machinery
  20 # in tools/acpi_extract.py requires this.
  21
  22 import re;
  23 import sys;
  24 import fileinput;
  25
  26 def die(diag):
  27     sys.stderr.write("Error: %s\n" % (diag))
  28     sys.exit(1)
  29
  30 # Note: () around pattern make split return matched string as part of list
  31 psplit = re.compile(r''' (
  32                           \b # At word boundary
  33                           ACPI_EXTRACT_\w+ # directive
  34                           \s+ # some whitespace
  35                           \w+ # array name
  36                          )''', re.VERBOSE);
  37
  38 lineno = 0
  39 for line in fileinput.input():
  40     # line number and debug string to output in case of errors
  41     lineno = lineno + 1
  42     debug = "input line %d: %s" % (lineno, line.rstrip())
  43
  44     s = psplit.split(line);
  45     # The way split works, each odd item is the matching ACPI_EXTRACT directive.
  46     # Put each in a comment, and on a line by itself.
  47     for i in range(len(s)):
  48         if (i % 2):
  49             sys.stdout.write("\n/* %s */\n" % s[i])
  50         else:
  51             sys.stdout.write(s[i])