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# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
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from uuid import UUID
from StringIO import StringIO
from errors import InvalidQueryFormat
from struct import unpack

__all__ = ['prepare', 'marshal', 'unmarshal']

def prepare(query, *args):
    result = StringIO()
    index = query.find('?')
    oldindex = 0
    count = 0
    
    while (index >= 0):
        result.write(query[oldindex:index])
        try:
            result.write(marshal(args[count]))
        except IndexError:
            raise InvalidQueryFormat("not enough arguments in substitution")
        
        oldindex = index + 1
        index = query.find('?', index + 1)
        count += 1
    result.write(query[oldindex:])
    
    if count < len(args):
        raise InvalidQueryFormat("too many arguments in substitution")
    
    return result.getvalue()

def marshal(term):
    if isinstance(term, (long,int)):
        return "%d" % term
    elif isinstance(term, unicode):
        return "'%s'" % __escape_quotes(term.encode('utf8'))
    elif isinstance(term, str):
        return "'%s'" % __escape_quotes(term)
    elif isinstance(term, UUID):
        if term.version == 1:
            return "timeuuid(\"%s\")" % str(term)
        else:
            return str(term)
    else:
        return str(term)    
    
def unmarshal(bytestr, typestr):
    if typestr == "org.apache.cassandra.db.marshal.BytesType":
        return bytestr
    elif typestr == "org.apache.cassandra.db.marshal.AsciiType":
        return bytestr
    elif typestr == "org.apache.cassandra.db.marshal.UTF8Type":
        return bytestr.decode("utf8")
    elif typestr == "org.apache.cassandra.db.marshal.IntegerType":
        return decode_bigint(bytestr)
    elif typestr == "org.apache.cassandra.db.marshal.LongType":
        return unpack(">q", bytestr)[0]
    elif typestr == "org.apache.cassandra.db.marshal.LexicalUUIDType":
        return UUID(bytes=bytestr)
    elif typestr == "org.apache.cassandra.db.marshal.TimeUUIDType":
        return UUID(bytes=bytestr)
    else:
        return bytestr
    
def decode_bigint(term):
    val = int(term.encode('hex'), 16)
    if (ord(term[0]) & 128) != 0:
        val = val - (1 << (len(term) * 8))
    return val

def __escape_quotes(term):
    assert isinstance(term, (str, unicode))
    return term.replace("\'", "''")

@@ -1857,106 +1857,8 @@
 D):%0A
-        if term.version == 1:%0A            return %22timeuuid(%5C%22%25s%5C%22)%22 %25 str(term)%0A        else:%0A    
     

fix buggy timeuuid term marshalling