Maya curve rigger

# curve rigger
# cwisbg.com
# select curve and run
# creates ctrl curve at every cv
from pymel.core import *
def zeroGrp(s):
    pap = listRelatives(s,p=1)
    pos = s.getTranslation()
    rot = s.getRotation()
    scl = s.getScale()
    nwGrp = group(em=1, n= s+"_zeroGrp")
    move(s, 0,0,0)
    rotate(s,0,0,0)
    scale(s,1,1,1)
    parent(s,nwGrp)
    move(nwGrp, pos)
    rotate(nwGrp, rot)
    scale(nwGrp, scl)
    if pap:
        parent(nwGrp,pap)
    return nwGrp
def getPiv(s):
    select(s)
    setToolTo('Move')
    piv = manipMoveContext('Move', q=True, p=True,m=2)
    return piv
def orient(point1, point2):
    point1 = getPiv(point1)
    point2 = getPiv(point2)
    l1 = spaceLocator(p = (0,0,0), n = "point1")
    move(l1, point1, ws=1)
    l2 = spaceLocator(p = (0,0,0), n = "point2")
    move(l2, point2, ws=1)
    aimConstraint(l1,l2)
    axesLctr = spaceLocator(p = (0,0,0), n = "axes")
    p = pointConstraint([l1,l2], axesLctr)
    r = l2.getRotation()
    delete(p)
    delete(l1)
    delete(l2)
    delete(axesLctr)
    return r
def grpr(name):
    g = ls(name)
    if not g:
        g = group(n=name,em=1)
    return g
def rigCrv(s,grp):
    cleanUpGrp = grp
    grpList = []
    i = 0
    for cv in s.cv:
        ctrl = circle(c = (0,0,0),nr=[1,0,0], ch=1, n = "{0}_{1}_ctrl".format(s,cv))[0]
        piv = getPiv(cv)
        zgrp = zeroGrp(ctrl)
        move(zgrp,piv)
        grpList.append(zgrp)
        c = cluster(cv, n = "{0}_cluster_{1}".format(s,i))
        setAttr(c[1].visibility,0)
        #setAttr(s.visibility,0)
        pc = parentConstraint(ctrl,c)
        parent(c,cleanUpGrp)
        parent(zgrp,cleanUpGrp)
        i += 1
    i = 0
    t = []
    for g in grpList:
        if i == 0:
            r = orient(grpList[i], grpList[i+1])
            rotate(g,r)
        elif i == len(grpList)-1:
            r = orient(grpList[i], grpList[i-1])
            rotate(g,r)
            rotate(g,0,180,0,os=1,r=1)
        else:
            r = orient(grpList[i+1], grpList[i-1])
            rotate(g,r)
            t.append(g)
        i += 1

sl = selected()
for s in sl:
    cleanUpGrp = grpr(s+"_crtl_grp")
    rigCrv(s,cleanUpGrp)