wciia.py

#!/usr/bin/env 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

"""

from __future__ importprint_function
importos

code_owners= {}

defprocess_files_and_folders(owner):
filesfolders=owner['filesfolders']
# paths must be in ( ... ) so strip them
lpar=filesfolders.find('(')
rpar=filesfolders.rfind(')')
ifrpar<=lpar:
# give up
return
paths=filesfolders[lpar+1:rpar]
# split paths
owner['paths'] = []
forpathinpaths.split():
owner['paths'].append(path)

defprocess_code_owner(owner):
if'filesfolders'inowner:
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= {}
forlineincode_owners_file:
forwordinline.split():
ifword=="N:":
name=line[2:].strip()
ifcode_owner:
process_code_owner(code_owner)
code_owner= {}
# reset the values
code_owner['name'] =name
ifword=="E:":
email=line[2:].strip()
code_owner['email'] =email
ifword=="D:":
description=line[2:].strip()
code_owner['description'] =description
ifword=="F:":
filesfolders=line[2:].strip()
code_owner['filesfolders'].append(filesfolders)

deffind_owners(fpath):
onames= []
lmatch=-1
# very simplistic way of findning the best match
fornameincode_owners:
owner=code_owners[name]
if'paths'inowner:
forpathinowner['paths']:
# print "searching (" + path + ")"
# try exact match
iffpath==path:
returnname
# see if path ends with a *
rstar=path.rfind('*')
ifrstar>0:
# try the longest match,
rpos=-1
iflen(fpath) <len(path):
rpos=path.find(fpath)
ifrpos==0:
onames.append(name)
onames.append('Chris Lattner')
returnonames

# now lest try to find the owner of the file or folder
importsys

iflen(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
ifnotos.path.exists(path):
print("path ("+path+") does not exist")
exit(-1)

owners_name=find_owners(path)

# be grammatically 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="."
fordir,subdirList,fileListinos.walk( root , topdown=False ) :
print("dir :" , dir)
forfnameinfileList :
print("-" , fname)
print()