A new script for splitting the kernel configs into

common and flavour-specific parts. See source for
description. Will need to be modified to be able to
rebuild the configs after modifications.

svn path=/branches/kernel-image-2.6.11/; revision=3296

debian/bin/split.py

@@ -0,0 +1,65 @@
+#!/usr/bin/python
+#
+# Scans underlying directory structure for files with names config.ext
+# where .ext is not .stub, .common or .default, and extracts a common
+# set of config options from them. The resulting set of options is
+# written into the config.common file. On the second pass each config.ext
+# file is parsed to remove the common config options found in
+# config.common, with the results written to config.ext.stub.
+#
+import os, string, sys
+
+common = []
+conffiles = []
+
+def is_option(line):
+	result = (string.count(line, '#') > 0)
+	result = result or (len(string.strip(line)) == 0)
+	return not result
+
+def is_not_common(line):
+	return (line not in common)
+	
+def read_list(fname):
+	inf = open(fname, 'r')
+	opts = filter(is_option, inf.readlines())
+	inf.close()
+	return opts
+
+def merge_list(list):
+	global common
+	if len(common) == 0:
+		common = list[:]
+	else:
+		for opt in common:
+			if opt not in list: common.remove(opt)
+	
+def write_out(list, fname):
+	outf = open(fname, 'w')
+	outf.write('#\n# Automatically generated by ' + sys.argv[0] + '\n#\n') 
+	outf.writelines(list)
+	outf.close()
+
+def walk_callback(arg, dir, names):
+  	if names.count('.svn'): names.remove('.svn')
+	for name in names:
+		base, ext = os.path.splitext(name)
+		if(base == 'config' and ext not in ('.default', '.stub', '.common')):
+			fname = os.path.join(dir,name)
+			conffiles.append(fname)
+			print 'Processing ' + fname + ' ... ',
+			s = read_list(fname)
+			merge_list(s)
+			print "done."
+#
+# Main routine
+#
+os.path.walk('.', walk_callback, None)
+print 'Writing the config.common output file ... ',
+write_out(common, 'config.common')
+print 'done.'
+for fname in conffiles:
+	print 'Writing the ' + fname + '.stub output file ... ',
+	s = filter(is_not_common, read_list(fname))
+	write_out(s, fname + '.stub')
+	print 'done.'