adding whose code is it anywa tools

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168254 91177308-0d34-0410-b5e6-96231b3b80d8

utils/wciia.py

@@ -0,0 +1,125 @@
+#! python
+
+"""
+wciia - Whose Code Is It Anyway
+
+Determines code owner of the file/folder relative to the llvm source root.
+Code owner is determined from the content of the CODE_OWNERS.TXT 
+by parsing the D: field
+
+usage:
+
+utils/wciia.py  path
+
+limitations:
+- must be run from llvm source root
+- very simplistic algorithm
+- only handles * as a wildcard
+- not very user friendly 
+- does not handle the proposed F: field
+
+"""
+
+import os
+
+code_owners = {}
+
+def process_files_and_folders(owner):
+	filesfolders = owner['filesfolders']
+	# paths must be in ( ... ) so strip them
+	lpar = filesfolders.find('(')
+	rpar = filesfolders.rfind(')')
+	if rpar <= lpar:
+		# give up
+		return
+	paths = filesfolders[lpar+1:rpar]
+	# split paths
+	owner['paths'] = []
+	for path in paths.split():
+		owner['paths'].append(path)
+	
+def process_code_owner(owner):
+	if 'filesfolders' in owner:
+		filesfolders = owner['filesfolders']
+	else:
+#		print "F: field missing, using D: field"
+		owner['filesfolders'] = owner['description']
+	process_files_and_folders(owner)
+	code_owners[owner['name']] = owner
+	
+# process CODE_OWNERS.TXT first
+code_owners_file = open("CODE_OWNERS.TXT", "r").readlines()
+code_owner = {}
+for line in code_owners_file:
+    for word in line.split():
+	if word == "N:":
+		name = line[2:].strip()
+		if code_owner:
+			process_code_owner(code_owner)
+			code_owner = {}
+		# reset the values
+		code_owner['name'] = name
+	if word == "E:":
+		email = line[2:].strip()
+		code_owner['email'] = email
+	if word == "D:":
+		description = line[2:].strip()
+		code_owner['description'] = description
+	if word == "F:":
+		filesfolders = line[2:].strip()
+		code_owner['filesfolders'].append(filesfolders)
+	
+def find_owners(fpath):
+	onames = []
+	lmatch = -1
+	#  very simplistic way of findning the best match
+	for name in code_owners:
+		owner = code_owners[name]
+		if 'paths' in owner:
+			for path in owner['paths']:
+#				print "searching (" + path + ")"
+				# try exact match
+				if fpath == path:
+					return name
+				# see if path ends with a *
+				rstar = path.rfind('*')
+				if rstar>0:
+					# try the longest match,
+					rpos = -1
+					if len(fpath) < len(path):
+						rpos = path.find(fpath)
+					if rpos == 0:
+						onames.append(name)
+	onames.append('Chris Lattner')
+	return onames
+	
+# now lest try to find the owner of the file or folder
+import sys
+
+if len(sys.argv) < 2:
+	print "usage " + sys.argv[0] + " file_or_folder"  
+	exit(-1)
+	
+# the path we are checking
+path = str(sys.argv[1])
+
+# check if this is real path
+if not os.path.exists(path):
+	print "path (" + path + ") does not exist"
+	exit(-1)
+	
+owners_name = find_owners(path)
+
+# be gramatically correct
+print "The owner(s) of the (" + path + ") is(are) : " + str(owners_name)
+
+exit(0)
+
+# bottom up walk of the current .
+# not yet used 
+root = "."
+for dir,subdirList,fileList in os.walk( root , topdown=False ) :
+   print "dir :" , dir
+   for fname in fileList :
+      print "-" , fname
+   print