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      1 #!/usr/bin/env python
      2 
      3 """
      4 wciia - Whose Code Is It Anyway
      5 
      6 Determines code owner of the file/folder relative to the llvm source root.
      7 Code owner is determined from the content of the CODE_OWNERS.TXT 
      8 by parsing the D: field
      9 
     10 usage:
     11 
     12 utils/wciia.py  path
     13 
     14 limitations:
     15 - must be run from llvm source root
     16 - very simplistic algorithm
     17 - only handles * as a wildcard
     18 - not very user friendly 
     19 - does not handle the proposed F: field
     20 
     21 """
     22 
     23 import os
     24 
     25 code_owners = {}
     26 
     27 def process_files_and_folders(owner):
     28 	filesfolders = owner['filesfolders']
     29 	# paths must be in ( ... ) so strip them
     30 	lpar = filesfolders.find('(')
     31 	rpar = filesfolders.rfind(')')
     32 	if rpar <= lpar:
     33 		# give up
     34 		return
     35 	paths = filesfolders[lpar+1:rpar]
     36 	# split paths
     37 	owner['paths'] = []
     38 	for path in paths.split():
     39 		owner['paths'].append(path)
     40 	
     41 def process_code_owner(owner):
     42 	if 'filesfolders' in owner:
     43 		filesfolders = owner['filesfolders']
     44 	else:
     45 #		print "F: field missing, using D: field"
     46 		owner['filesfolders'] = owner['description']
     47 	process_files_and_folders(owner)
     48 	code_owners[owner['name']] = owner
     49 	
     50 # process CODE_OWNERS.TXT first
     51 code_owners_file = open("CODE_OWNERS.TXT", "r").readlines()
     52 code_owner = {}
     53 for line in code_owners_file:
     54     for word in line.split():
     55 	if word == "N:":
     56 		name = line[2:].strip()
     57 		if code_owner:
     58 			process_code_owner(code_owner)
     59 			code_owner = {}
     60 		# reset the values
     61 		code_owner['name'] = name
     62 	if word == "E:":
     63 		email = line[2:].strip()
     64 		code_owner['email'] = email
     65 	if word == "D:":
     66 		description = line[2:].strip()
     67 		code_owner['description'] = description
     68 	if word == "F:":
     69 		filesfolders = line[2:].strip()
     70 		code_owner['filesfolders'].append(filesfolders)
     71 	
     72 def find_owners(fpath):
     73 	onames = []
     74 	lmatch = -1
     75 	#  very simplistic way of findning the best match
     76 	for name in code_owners:
     77 		owner = code_owners[name]
     78 		if 'paths' in owner:
     79 			for path in owner['paths']:
     80 #				print "searching (" + path + ")"
     81 				# try exact match
     82 				if fpath == path:
     83 					return name
     84 				# see if path ends with a *
     85 				rstar = path.rfind('*')
     86 				if rstar>0:
     87 					# try the longest match,
     88 					rpos = -1
     89 					if len(fpath) < len(path):
     90 						rpos = path.find(fpath)
     91 					if rpos == 0:
     92 						onames.append(name)
     93 	onames.append('Chris Lattner')
     94 	return onames
     95 	
     96 # now lest try to find the owner of the file or folder
     97 import sys
     98 
     99 if len(sys.argv) < 2:
    100 	print "usage " + sys.argv[0] + " file_or_folder"  
    101 	exit(-1)
    102 	
    103 # the path we are checking
    104 path = str(sys.argv[1])
    105 
    106 # check if this is real path
    107 if not os.path.exists(path):
    108 	print "path (" + path + ") does not exist"
    109 	exit(-1)
    110 	
    111 owners_name = find_owners(path)
    112 
    113 # be grammatically correct
    114 print "The owner(s) of the (" + path + ") is(are) : " + str(owners_name)
    115 
    116 exit(0)
    117 
    118 # bottom up walk of the current .
    119 # not yet used 
    120 root = "."
    121 for dir,subdirList,fileList in os.walk( root , topdown=False ) :
    122    print "dir :" , dir
    123    for fname in fileList :
    124       print "-" , fname
    125    print
    126