string_utilities.py

import re

def count(sequence, item):
    return sum([1 for elem in sequence if elem == item])

def enclose(string):
    if string.find('http://') > -1:
        return '<'+string.strip()+'>'
    else:
        return mapLangString(string)
        #return string

def escapeAmpersandCharacter(string):
    return string.replace('&','&amp;')

def escapeBracketCharacter(string):
    string = string.replace('(','')
    string = string.replace(')', '')
    return string

def escapeApostropheCharacter(string):
    return string.replace('\'','_')

def escapeForwardSlashCharacter(string):
    return string.replace('/','_')

def mapEnclose(string):
    if count(re.split('[:// ,]',string),'http') > 1:
        return ', '.join(map(enclose,string.split(',')))
    else:
        return enclose(string)

def mapLangString(string):
    string = string.replace('"','')
    
    if len(re.split('[;,]',string)) > 1:
        return ', '.join(map(langString,re.split('[;,]',string)))
    else:
        return langString(string)

def processString(string):
    string = escapeAmpersandCharacter(string)
    string = toUnicode(string)
    return string

def langString(string):
    # This checks if the object value is in the format :skos_concept_name
    # and prevents further double quotes or @ to be concatenated to it.
    if string.find(':') > -1:
        return string
    string = string.strip()
    if string.find('@') > 0:
        string = string.replace('@','"@')
    else:
        string = string + '"'
    return '"' + string

def generateXMLTagName(string):
    string = toUnicode(string)
    string = escapeBracketCharacter(string)
    string = escapeApostropheCharacter(string)
    string = escapeForwardSlashCharacter(string)
    return (string.lower()).replace(' ','_')

def toUnicode(string):
    return string.encode('utf-8').strip()