# -*- coding: utf-8 -*-
#
# Copyright (c) 2012-2015, CRS4
#
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"""
HL7apy - Constants
"""

#: number of expected separators
N_SEPS = 4

#: Dictionary with default encoding characters as per standard specifications
DEFAULT_ENCODING_CHARS = {
    'GROUP': '\r',
    'SEGMENT': '\r',
    'FIELD':  '|',
    'COMPONENT': '^',
    'SUBCOMPONENT': '&',
    'REPETITION': '~',
    'ESCAPE': '\\'
}

#: default hl7 version
DEFAULT_VERSION = "2.5"


class MLLP_ENCODING_CHARS:
    """
    MLLP encoding chars
    """
    #: Start Block
    SB = '\x0b'
    #: End Block
    EB = '\x1c'
    #: Carriage return
    CR = '\x0d'


class VALIDATION_LEVEL:
    """
    Allowed validation levels
    """
    #: Strict validation
    STRICT = 1
    #: Tolerant validation
    TOLERANT = 2
    # kept for backward compatibility
    QUIET = TOLERANT