#!/usr/bin/env python
import sys

MAXCODE = 0xFFFF # sys.maxunicode

encodings = sys.argv[1:]
if not encodings:
    encodings = [
        'big5', 'big5hkscs',
        'cp932', 'cp949', 'cp950',
        'euc-jp', 'euc-jis-2004', 'euc-jisx0213', 'euc-kr',
        'gb2312', 'gbk', 'gb18030',
        'iso2022-kr', 'johab',
        'shift-jis', 'shift-jis-2004', 'shift-jisx0213',
        'utf-7',
        'cp037', 'cp424', 'cp500', 'cp864', 'cp875', 'cp1026', 'cp1140',
    ]

INFLEN = 1000
for encoding in encodings:
    max_len = [-1] * 256
    min_len = [INFLEN] * 256
    for c in range(MAXCODE + 1):
        try:
            d = chr(c).encode(encoding)
        except UnicodeEncodeError:
            continue
        b = d[0]
        max_len[b] = max(max_len[b], len(d))
        min_len[b] = min(min_len[b], len(d))
    if max(max_len) > 4:
        print('%s is not supported' % encoding, file=sys.stderr)
        continue
    if any(n != m for n, m in zip(min_len, max_len) if m > 0):
        print('%s is not supported' % encoding, file=sys.stderr)
        continue
    info_map = [b if n == 1 else -n if n > 1 else -1
                for b, n in enumerate(max_len)]
    print('int %s_map[256] = {' % encoding.replace('-', '_').lower())
    for i in range(0, 256, 16):
        print('    %s,' % ', '.join(str(x) for x in info_map[i: i + 16]))
    print('};')