SOURCES: kernel-symsorder.py (NEW) - scans kernel Kconfig symbols ...

[glen]

Author: glen                         Date: Wed Apr 23 15:40:07 2008 GMT
Module: SOURCES                       Tag: HEAD
---- Log message:
- scans kernel Kconfig symbols order

---- Files affected:
SOURCES:
   kernel-symsorder.py (NONE -> 1.1)  (NEW)

---- Diffs:

================================================================
Index: SOURCES/kernel-symsorder.py
diff -u /dev/null SOURCES/kernel-symsorder.py:1.1
--- /dev/null	Wed Apr 23 17:40:07 2008
+++ SOURCES/kernel-symsorder.py	Wed Apr 23 17:40:02 2008
@@ -0,0 +1,111 @@
+#!/usr/bin/python
+# vim: set fileencoding=utf-8
+# -*- coding: utf-8 -*-
+#
+# Parse kernel Kconfig and return all kernel symbols in orders it will write
+# likely also to .config file.  based on
+#
+# Parsing code based on http://kernel.org/doc/make/menuconfig2html.py
+#
+# Authors
+#   Elan Ruusamäe <glen at pld-linux.org>
+#   Patryk Zawadzki <patrys at pld-linux.org>
+#
+# Date Created
+#   2008-04-23
+# 
+
+# "boolean" not documented type in kconfig-language.txt line 51
+
+import os,sys
+
+class ParsingException(Exception):
+  pass
+
+class MenuParser(object):
+  filename = ""
+  lineno = 0
+  helplen = 0
+  result = []
+
+  # strip quotes from string
+  def zapquotes(self, str):
+    if str[0] == '"': str = str[1:str.rfind('"')]
+    return str
+
+  # pre-proccess input lines. handles line continuations
+  def preparse(self, data):
+    x = data.pop(0)
+    self.lineno = self.lineno + 1
+    while True:
+      if x:
+        while x[-1] == '\\':
+          x = x[:-1] + data.pop(0)
+          self.lineno = self.lineno + 1
+        yield x
+      if data:
+        x = data.pop(0)
+        self.lineno = self.lineno + 1
+      else:
+        raise StopIteration
+
+  def parse(self, filename):
+    self.result = []
+    self.readfile(filename)
+    return self.result
+
+  def readfile(self, filename):
+    self.filename = filename
+    lines = open(filename).read().split("\n")
+
+    for line in self.preparse(lines):
+      if self.helplen:
+        line = line.expandtabs()
+        if not len(line) or line[:self.helplen].isspace():
+          continue
+        else:
+          self.helplen = 0
+      self.parseline(line)
+
+  def parseline(self, line):
+    words = line.strip().split(None, 1)
+    # skip empty lines
+    if not len(words): return
+    # skip comments
+    if words[0][0] == '#': return
+
+    if words[0] in ('config', 'menuconfig'):
+      config = words[1]
+      self.result.append(config)
+
+    elif words[0] in ('bool', 'boolean', 'mainmenu', 'option', 'def_tristate', \
+            'optional', 'comment', 'choice', 'endchoice', 'range', 'def_bool', \
+            'endmenu', 'tristate', 'string', 'hex', 'int', 'prompt', 'default', \
+            'depends', 'select', 'if', 'endif', 'menu'):
+       pass
+
+    elif words[0] in ('help', '---help---'):
+      self.helplen = len(line[:line.find(words[0])].expandtabs())
+
+    elif words[0] == 'source':
+      file = self.zapquotes(words[1])
+      parser = MenuParser()
+      self.result += parser.parse(file)
+
+    else:
+      raise ParsingException, "%s:%d: Bad line: %s\n" % (self.filename, self.lineno, line.strip())
+
+if __name__ == '__main__':
+  # called as script, not as lib
+  if len(sys.argv) != 2:
+    sys.stderr.write("Usage: symsorder.py kconfigfile\n")
+    sys.exit(1)
+  parser = MenuParser()
+  config = sys.argv[1]
+  try:
+    res = parser.parse(config)
+  except IOError:
+    sys.stderr.write("File %s missing\n" % config)
+  except ParsingException, e:
+    sys.stderr.write(e.message)
+
================================================================