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asl-cards/asl_cards/natinfo.py

70 lines
2.2 KiB

""" Manage information about each nationality.
"""
import sys
import os
import json
_nat_info = None
_base_dir = None
# ---------------------------------------------------------------------
def _make_key( nat ) :
"""Get the JSON key for a nationality.
We require the JSON keys to be lower-case, with no spaces (not strictly necessary, but not a bad idea :-/).
"""
return nat.lower().replace( " " , "-" ) if nat else None
def display_name_from_key( key ) :
"""Get the nationality display string from a JSON key."""
return key.replace( "-" , " " ).capitalize()
# ---------------------------------------------------------------------
def load( base_dir ) :
"""Load the nationality information."""
global _base_dir , _nat_info
_base_dir = os.path.abspath( base_dir )
fname = os.path.join( base_dir , "natinfo.json" )
if os.path.isfile( fname ) :
with open( fname , "r" ) as fp :
_nat_info = json.load( fp )
else :
_nat_info = {}
def dump() :
"""Dump the nationality information."""
for nat in sorted(_nat_info.keys()) :
print( "{}:".format( nat ) )
print( "- flag = {}".format( get_flag(nat) ) )
print( "- accel = {}".format( get_accel_for_nat(nat) ) )
def get_flag( nat ) :
"""Locate the flag image file for a nationality.
These are set in the JSON data file at $/{nat}/flag. If there is no entry, the default is $/flags/${nat}.png
"""
key = _make_key( nat )
try :
fname = _nat_info[ key ][ "flag" ]
except ( KeyError , TypeError ) :
fname = "{}.png".format( key )
fname = os.path.join( _base_dir , os.path.join("flags", fname) )
return fname if os.path.isfile(fname) else None
def get_nats_for_accel( ch ) :
"""Get the nationalities for an accelerator key."""
if ch is None : return None
ch = ch.strip().lower()
if not ch : return None
return [ nat for nat,vals in _nat_info.items() if vals.get("accelerator","").lower() == ch ]
def get_accel_for_nat( nat ) :
"""Get the accelerator key for a nationality."""
key = _make_key( nat )
try :
return _nat_info[ key ][ "accelerator" ].lower()
except ( KeyError , TypeError ) :
return None