import re,os

def org(path=os.getcwd(),fs=None,preview=True):

    fs = fs or []

    for root,dirs,files in os.walk(path):

        for f in files:

            if f[-4:]=='html':

                fp=os.path.join(root,f)

                s=open(fp,encoding='u8').read()

                for func in fs:

                    s=func(s,preview)

                if not preview:

                    open(fp,'w',encoding='u8').write(s)

url_kwargs_reg=re.compile(r"""

    {%\s*url\s+

    (?P<viewfunc>((?P<q1>['"]?)[\w:.]+(?P=q1)))

    (?P<kwargs>(\s+\w+\s*=\s*(?P<q2>['"]?)[.\w]+(?P=q2))*)

    \s*%}""",re.X)

nv_reg=re.compile(r"""\s+

    (?P<name>\w+)

    \s*=\s*

    (?P<value>(?P<q2>[\'"]?)[.\w]+(?P=q2))

    """,re.X)

def url_kwargs(text,preview=1):

    for old,new in [

            (m.group(),'{%% url(%s,kwargs=dict(%s)) %%}'%(

                m.group('viewfunc'),

                ','.join(['%s=%s'%(n.group('name'),n.group('value')) for n in re.finditer(nv_reg,m.group('kwargs'))]),

                )

             )

            for m in re.finditer(url_kwargs_reg,text)

         ]:

        if preview:

            print('%s--->\n    %s'%(old,new))

        else:

            text=text.replace(old,new,1)

    return text

url_args_reg=re.compile(r"""

    {%\s*url\s+

    (?P<viewfunc>((?P<q1>['"]?)[\w:.]+(?P=q1)))

    (?P<args>(\s+(?P<q2>['"]?)[.\w]+(?P=q2))*)

    \s*%}""",re.X)

def url_args(text,preview=1):

    for old,new in [

            (m.group(),'{%% url(%s,args=(%s,)) %%}'%(

                m.group('viewfunc'),

                ','.join( m.group('args').split()),

                )

             )

            for m in re.finditer(url_args_reg,text)

         ]:

        if preview:

           print('%s--->\n    %s'%(old,new))

        else:

            text=text.replace(old,new,1)

    return text

if __name__=='__main__':

    text="""

{% url viewname  first =fir   third=   "thi"    %}

{% url "viewname"  first =    fir%}

{% url 'viewname'  first =fir    second = 'sec'    third   ='thi'    %}

{% url 'funcname'  first second     'third'    %}

{% url "funcname"  first   "third"   %}

{% url funcname  first%}

"""

    fs=[url_args,url_kwargs]

    org(fs=fs,preview=0)