# -*- coding: utf-8 -*-
from __future__ import division, print_function, unicode_literals
import sys
import timeit
import math

def bench_decode(encoding, string):
    try:
        x = eval(string).encode(encoding)
        assert x.decode(encoding) == eval(string)
    except UnicodeEncodeError:
        return
    setup = '''
import codecs
d = codecs.getdecoder({0!r})
x = {1!r}
'''.format(encoding, x)
    repeat = 10
    number = 100
    r = timeit.repeat('d(x)', setup, repeat=repeat, number=number)
    best = min(r)
    usec = best * 1e6 / number
    print("%-8s  %-30s  %.0f" % (encoding, string.replace("u'", "'"), len(x) / usec))
    sys.stdout.flush()

n = 10000
encodings = sys.argv[1:]
if not encodings:
    encodings = ('ascii', 'latin1',
        'cp037',
        'cp1006',
        'cp1026',
        'cp1140',
        'cp1250',
        'cp1251',
        'cp1252',
        'cp1253',
        'cp1254',
        'cp1255',
        'cp1256',
        'cp1257',
        'cp1258',
        'cp424',
        'cp437',
        'cp500',
        'cp720',
        'cp737',
        'cp775',
        'cp850',
        'cp852',
        'cp855',
        'cp856',
        'cp857',
        'cp858',
        'cp860',
        'cp861',
        'cp862',
        'cp863',
        'cp864',
        'cp865',
        'cp866',
        'cp869',
        'cp874',
        'cp875',
        'hp_roman8',
        'iso8859_10',
        'iso8859_11',
        'iso8859_13',
        'iso8859_14',
        'iso8859_15',
        'iso8859_16',
        'iso8859_1',
        'iso8859_2',
        'iso8859_3',
        'iso8859_4',
        'iso8859_5',
        'iso8859_6',
        'iso8859_7',
        'iso8859_8',
        'iso8859_9',
        'koi8_r',
        'koi8_u',
        'mac_arabic',
        'mac_centeuro',
        'mac_croatian',
        'mac_cyrillic',
        'mac_farsi',
        'mac_greek',
        'mac_iceland',
        'mac_latin2',
        'mac_romanian',
        'mac_roman',
        'mac_turkish',
        'palmos',
        'ptcp154',
        'tis_620',
    )
for encoding in encodings:
    chars = ['A']
    s = bytes(range(256)).decode(encoding, 'replace')
    for ch in s:
        if 0x80 <= ord(ch) < 0x100:
            chars.append(ch)
            break
    for ch in s:
        if 0x100 <= ord(ch) < 0x10000 and ch != '\uFFFE':
            chars.append(ch)
            break
    for i, ch1 in enumerate(chars):
        bench_decode(encoding, '%s*%d' % (ascii(ch1), n))
#        for ch2 in chars[:i]:
#            bench_decode(encoding, '  %s+%s*%d' % (ascii(ch1), ascii(ch2), n - 1))
#        for ch2 in chars[i + 1:]:
#            bench_decode(encoding, '    %s*%d+%s' % (ascii(ch1), n - 1, ascii(ch2)))
    print()