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Source code for tool_shed.util.encoding_util

import binascii
import json
import logging

from galaxy.util.hash_util import hmac_new

log = logging.getLogger(__name__)

encoding_sep = '__esep__'
encoding_sep2 = '__esepii__'


def tool_shed_decode(value):
    # Extract and verify hash
    a, b = value.split(":")
    value = binascii.unhexlify(b)
    test = hmac_new('ToolShedAndGalaxyMustHaveThisSameKey', value)
    assert a == test
    # Restore from string
    values = None
    try:
        values = json.loads(value)
    except Exception:
        pass
    if values is None:
        values = value
    return values


def tool_shed_encode(val):
    if isinstance(val, dict) or isinstance(val, list):
        value = json.dumps(val)
    else:
        value = val
    a = hmac_new('ToolShedAndGalaxyMustHaveThisSameKey', value)
    b = binascii.hexlify(value)
    return "%s:%s" % (a, b)