ref: 518cee440e89660ccf71b9a4f8850c80453ea926
dir: /tools/free_space.py/
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Usage: python3 free_space.py [BANK=none] [pokecrystal.map]
Calculate the free space in the ROM or its individual banks.
The BANK argument allows printing free space in one, all, or none of the ROM's banks.
Valid arguments are numbers (in decimal "42" or hexadecimal "0x2A"), "all" or "none".
If not specified, defaults to "none".
"""
import sys
from mapreader import MapReader
def main():
print_bank = 'none'
mapfile = 'pokecrystal.map'
if len(sys.argv) >= 2 and sys.argv[1].startswith('BANK='):
print_bank = sys.argv[1].split('=', 1)[-1]
if len(sys.argv) >= 3:
mapfile = sys.argv[2]
elif len(sys.argv) >= 3 and sys.argv[2].startswith('BANK='):
print_bank = sys.argv[2].split('=', 1)[-1]
mapfile = sys.argv[1]
if print_bank not in {'all', 'none'}:
try:
if print_bank.startswith('0x') or print_bank.startswith('0X'):
print_bank = int(print_bank[2:], 16)
else:
print_bank = int(print_bank)
except ValueError:
error = 'Error: invalid BANK: %s' % print_bank
if print_bank.isalnum():
error += ' (did you mean: 0x%s?)' % print_bank
print(error, file=sys.stderr)
sys.exit(1)
num_banks = 0x80
bank_size = 0x4000 # bytes
total_size = num_banks * bank_size
r = MapReader()
with open(mapfile, 'r', encoding='utf-8') as f:
l = f.readlines()
r.read_map_data(l)
free_space = 0
per_bank = []
default_bank_data = {'sections': [], 'used': 0, 'slack': bank_size}
for bank in range(num_banks):
bank_data = r.bank_data['ROM0 bank'] if bank == 0 else r.bank_data['ROMX bank']
data = bank_data.get(bank, default_bank_data)
used = data['used']
slack = data['slack']
per_bank.append((used, slack))
free_space += slack
print('Free space: %d/%d (%.2f%%)' % (free_space, total_size, free_space * 100.0 / total_size))
if print_bank != 'none':
print()
print('bank, used, free')
for bank in range(num_banks):
used, slack = per_bank[bank]
if print_bank in {'all', bank}:
print('$%02X, %d, %d' % (bank, used, slack))
if __name__ == '__main__':
main()