1 import uuid

     2 import django.core.urlresolvers

     3 from django.conf import settings

     4 from ldt.text.models import *

     5 import urllib

     6 import datetime

     7 import lxml.etree

     8 import base64

     9 

    10 __BOOLEAN_DICT = {

    11     'false':False,

    12     'true':True,

    13     '0':False,

    14     '1':True,

    15     't': True,

    16     'f':False

    17 }

    18 

    19 def boolean_convert(bool):

    20     if bool is None:

    21         return False

    22     if bool is True or bool is False:

    23         return bool

    24     key = str(bool).lower()

    25     return __BOOLEAN_DICT.get(key, False)

    26 

    27 

    28 def generate_uuid():

    29     return unicode(uuid.uuid1())

    30 

    31 

    32 def normalize_tags(list):

    33     nlist=[]

    34     for tag in list:

    35         tag = tag.lower()

    36         nlist.append(tag)

    37     taglist = dict().fromkeys(nlist).keys()    

    38     

    39     return taglist

    40 

    41 

    42 def create_empty_annotation():

    43     iri = lxml.etree.Element('iri')

    44     doc = lxml.etree.ElementTree(iri)

    45     

    46     textannotation = lxml.etree.SubElement(iri, 'text-annotation')

    47     id = lxml.etree.SubElement(textannotation,'id')

    48     uri = lxml.etree.SubElement(textannotation,'uri')

    49     tags = lxml.etree.SubElement(textannotation,'tags')

    50     

    51     content = lxml.etree.SubElement(textannotation,'content')

    52     color = lxml.etree.SubElement(content,'color')

    53     description = lxml.etree.SubElement(content,'description')

    54     title = lxml.etree.SubElement(content,'title')

    55     text = lxml.etree.SubElement(content,'text')

    56     

    57     meta = lxml.etree.SubElement(textannotation,'meta')

    58     contributor = lxml.etree.SubElement(meta, "contributor")

    59     creator = lxml.etree.SubElement(meta, "creator")

    60     creationdate = lxml.etree.SubElement(meta, "created")

    61     updatedate = lxml.etree.SubElement(meta, "modified")

    62 

    63     return doc

    64