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unbork.py
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unbork.py
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#!/usr/bin/env python2
# coding: utf-8
from __future__ import print_function, unicode_literals
"""unbork.py: Filename fixer"""
__version__ = "1.2"
__author__ = "ed <irc.rizon.net>"
__license__ = "MIT"
__copyright__ = 2015
import struct
import base64
import zlib
import json
import sys
import os
import re
try:
from urllib import unquote
except:
from urllib.parse import unquote
PY2 = sys.version_info.major == 2
# python doesn't provide a list of available encodings so here it is
enc_py26 = "eJxdkttyhCAMht/F615wBp+l02GUusrqHkZ0ZtunLwvJmu0N//eHhIDxs+lSiLH5aPo4apBpTiFlDncmbVElVFXwmrGiFry1uqjTDFSAYtyA1nxnIM9wUMg3ElSBQr2BetNWtbAPfVtZ61tV91u4B2fMAAgArmBL6BdwBIEgERSCRjAIFsFlGPbgz3eEmLxgTB32wQSXYOc1w9gLyUWBuazcMfm80PSbl5hugglRTzyM5+9W/LO1JYnIdzs8NhIo91i6LV7xXOd0i4cWloQVYU3YELaEHeGWMGfU0A6ctuC0B382Od+mrs8636LzK8Ke4dIFH37WuCwxgB3XYZiBYxiW7voNrrxYgFlvl+4KvO3rHNOU3X3Lcy2jT1M8bc8BUsYP/QrgdPft5MufWMH3w8ELcnlLhSMh8yvBgjpUn+LYfP0Bd0QChw=="
enc_py27 = "eJxdkt1ygyAQRt/F617wDz5Lp+MoNUo0MSM6k/bpi7AbN73xnA9wF8TPqo0+hOqj6sKgAeMUfUzuH0zaTCVUIWTNWKYVQBi3Vmc6zYACiOMGaIGu0MB6w4HwnpFABYQ6BuqYutDCPPSvZXm/VmW+hv1wxgyIAOEKpoR+CUcRKBJFoWgUg2JRjjP1u2+uD5QQG8GYOuOTCS4hTmuSoROSiyxTfnLH5LGh8Tc9QlwEE6JUPEPD36P4F0tLMiLfY//cyEDex9xu4Y51ndM1Fs0uiSvimrghbok74jVxzmignTltx2k/Thvyo+N1GdsucVqCa1aUPcmt9Y3/WcM8Bw9xWPt+Ag++n9v7N6R8fAFhXW7tHXzb1ynEMaXHli45/wdxDJftuE3q+NVfA3jV+3Zp8m9ZpOn602f0fJYi54LkrwUW6JBNDEP19Qcj/gml"
def zenc(lst):
return base64.b64encode(zlib.compress(json.dumps(lst, separators=(",", ":"))))
def zdec(b64):
return json.loads(zlib.decompress(base64.b64decode(b64)).decode())
if PY2 and sys.version_info.minor == 6:
codecs = zdec(enc_py26)
else:
codecs = zdec(enc_py27)
def eprint(*args, **kwargs):
kwargs["file"] = sys.stderr
print(*args, **kwargs)
sys.stderr.flush() # ???
# Cross-platform (doubt.jpg) read single key
try:
from msvcrt import getch
except:
import termios
import tty
def getch():
fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(fd)
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
return ch
class Config:
mode = None
via = None
def enum(**enums):
return type(str("Enum"), (), enums)
Modes = enum(URL=1, VIA=2)
def sanitize(txt, for_print=True):
"""strip unprintables"""
pre = suf = ""
if for_print:
pre = "\x1b[1;31m"
suf = "\x1b[0m"
if PY2:
f = unichr
else:
f = chr
bads = {}
for r in [range(0, 32), range(127, 160)]:
for n in r:
bads[f(n)] = "<{0:02x}>".format(n)
ret = ""
for ch in txt:
if ch in bads:
ret += pre + bads[ch] + suf
else:
ret += ch
return ret
def rename(cfg, folder):
"""Iterate through a folder and find files to rename"""
for name in os.listdir(folder):
if cfg.mode == Modes.URL:
if PY2:
fixed = unquote(name)
else:
fixed = unquote(name.decode("utf-8", "ignore")).encode("utf-8")
elif cfg.mode == Modes.VIA:
try:
bork8 = name.decode("utf-8")
if not cfg.via.search(bork8):
continue
fixed = bork8.encode(via).decode(enc).encode("utf-8")
except Exception as e:
continue
else:
raise Exception("Unknown conversion mode [%s]" % cfg.mode)
if fixed == name:
continue
msg = "({0}) => (\x1b[1;32m{1}\x1b[0m) ".format(
sanitize(name.decode("utf-8", "replace")), sanitize(fixed.decode("utf-8"))
)
eprint(msg, end="")
ch = getch()
eprint(ch)
if ch == "y":
path_from = os.path.join(folder, name)
path_to = os.path.join(folder, fixed)
os.rename(path_from, path_to)
if ch == "q":
sys.exit(0)
def iterate(cfg, folder):
"""Recursively traverse a folder"""
rename(cfg, folder)
for subfolder in os.listdir(folder):
path = os.path.join(folder, subfolder)
if os.path.isdir(path):
eprint("Entering [{0}]".format(sanitize(path.decode("utf-8", "replace"))))
iterate(cfg, path)
cfg = Config()
# Check if mode 1 (url)
if len(sys.argv) == 2 and sys.argv[1] == "url":
cfg.mode = Modes.URL
# Check if mode 2 (via)
elif len(sys.argv) == 4 and sys.argv[2] == "via":
cfg.mode = Modes.VIA
enc = sys.argv[1]
via = sys.argv[3]
cs = b""
for a in range(128, 255):
cs += struct.pack(b"B", a)
cs = cs.decode(via)
cs = "([" + cs + "]{3}|(?:[" + cs + "].){2})"
cfg.via = re.compile(cs, flags=re.U)
# eprint(cs)
# Check if mode 3 (detect)
elif len(sys.argv) == 4 and sys.argv[1] == "find":
hits = 0
bad = sys.argv[2]
good = sys.argv[3]
# eprint(repr(bad))
# sys.exit(0)
if PY2:
bad = bad.decode("utf-8")
good = good.decode("utf-8")
for via in codecs:
try:
tmp = bad.encode(via)
except:
continue
for enc in codecs:
try:
tmp2 = tmp.decode(enc)
if tmp2 != good:
continue
except:
continue
hits += 1
eprint(
"%s \x1b[1;31m%s\x1b[0m via \x1b[1;32m%s\x1b[0m"
% (sys.argv[0], enc, via,)
)
eprint("Detection complete, found %d possible fixes" % (hits,))
sys.exit(0)
else:
eprint(
"""
\x1b[0;33mUsage:\x1b[0m
unbork.py url
unbork.py ENCODING via ENCODING
unbork.by find 'BROKEN' 'GOOD'
\x1b[0;33mExample 1:\x1b[0m
URL-escaped UTF-8, looks like this in ls:
?%81%8b?%81%88?%82%8a?%81??%81%a1.mp3
\x1b[33m{0}\033[0;1m url\x1b[0m
(\x1b[1;31m81%8b81%8882%8a81▒81%a1.mp3\x1b[0m) => (\x1b[1;32mかえりみち.mp3\x1b[0m)
\x1b[0;33mExample 2:\x1b[0m
SJIS (cp932) parsed as MSDOS (cp437) looks like...
ëFæ╜ôcâqâJâï - ì≈ù¼é╡.mp3
\x1b[33m{0}\033[0;1m cp932 via cp437\x1b[0m
(\x1b[1;31mëFæ╜ôcâqâJâï - ì≈ù¼é╡.mp3\x1b[0m) => (\x1b[1;32m宇多田ヒカル - 桜流し.mp3\x1b[0m)
\x1b[0;33mExample 3:\x1b[0m
Find a correction method from BROKEN to GOOD
\x1b[33m{0}\033[0;1m find 'УпРlЙ╣Кy' '同人音楽'\x1b[0m
.../unbork.py \x1b[1;31mcp932\x1b[0m via \x1b[1;32mcp866\x1b[0m ...
Detection complete, found 4 possible fixes
""".format(
sys.argv[0],
)
)
sys.exit(1)
eprint("\nListing files. For each file, select [Y]es [N]o [Q]uit.\n")
iterate(cfg, b".")
eprint("done")
# url (bad testcase, find a better one)
# echo h > '%E3%81%8B%E3%81%88%E3%82%8A%E3%81%BF%E3%81%A1.mp3'
#
# sjis via latin1
# echo h > "$(echo ごみ箱 | iconv -t sjis | iconv -f latin1)"