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

try:
	ascii
except NameError:
	ascii = repr

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
chars = ('A', '\u0080', '\u0100', '\u8000', '\U00010000')
encodings = sys.argv[1:]
if not encodings:
    encodings = ('ascii', 'latin1', 'utf-8',
                 'utf-16le', 'utf-16be',
                 'utf-32le', 'utf-32be')
for encoding in encodings:
    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()