Reimplement fromfolder script

Removing configuration options from configuration file according to
definition folder. New implementation allows to specify required
configuration options that shouldn't be removed in any case.

2 files changed, 71 insertions, 10 deletions

diff --git a/scripts/from_folder b/scripts/from_folder
deleted file mode 100755
index 8801a48..0000000
--- a/scripts/from_folder
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/bash
-
-FOLDER=linux/kernel
-
-CONF=`find $FOLDER -name Kconfig | xargs grep -e ^config | cut -d ' ' -f2`
-
-REG=`echo $CONF | tr " " "|" | sed 's/^/\(/' | sed 's/$/\)/'`
-
-#egrep "$REG" $1
-egrep -v "$REG" $1 > $2
diff --git a/scripts/fromfolder.py b/scripts/fromfolder.py
new file mode 100755
index 0000000..d5bb2b3
--- /dev/null
+++ b/scripts/fromfolder.py
@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+import os
+import sys
+import re
+from conf import conf
+from conf import sf
+
+def loadfromKconfig(file):
+	found = set()
+	for ln in open(file):
+		if re.search('^config', ln):
+			name = ln[7:].rstrip()
+			found.add(name)
+	return found
+
+def loadfromfolder(folder):
+	found = set()
+	for l in os.listdir(folder):
+		if os.path.isdir(folder + '/' + l):
+			found = found | loadfromfolder(folder + '/' + l)
+		elif os.path.isfile(folder + '/' + l) and re.search('Kconfig', l):
+			found =  found | loadfromKconfig(folder + '/' + l)
+	return found
+
+def removefrom(file, outfile, removelist):
+	alllines = []
+	for ln in open(file):
+		alllines.append(ln.rstrip())
+	
+	for rl in removelist:
+		for ln in alllines:
+			if re.search('^CONFIG_' + rl + '=', ln):
+				print('removing ' + ln)
+				alllines.remove(ln)
+	
+	with open(outfile, 'w') as f:
+		for ln in alllines:
+			f.write(ln + '\n')
+	
+#################################################################################
+
+# TODO propper argument parsing
+if __name__ == '__main__':
+	folder = sys.argv[1]
+	inputfile = sys.argv[2]
+	outputfile = sys.argv[3]
+	if not len(sys.argv) < 5:
+		exceptfile = sys.argv[4]
+
+	exceptconf = set()
+	if os.path.isfile(exceptfile):
+		for ln in open(exceptfile):
+			lns = ln.rstrip()
+			if lns:
+				exceptconf.add(lns)
+
+	rem = loadfromfolder(sf(conf.linux_sources + '/' + folder))
+
+	for ec in exceptconf:
+		rrlist = []
+		for r in rem:
+			if re.match(ec, r):
+				print('except ' + r)
+				rrlist.append(r)
+		for r in rrlist:
+			try:
+				rem.remove(r)
+			except KeyError:
+				pass
+
+	removefrom(inputfile, outputfile, rem)