Gecko [ herotex-group.site ]

Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
asyncio	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
collections	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
concurrent	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
config-3.10-x86_64-linux-gnu	[ DIR ]	drwxr-xr-x	2025-01-21 09:42
ctypes	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
curses	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
dbm	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
distutils	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
email	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
encodings	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
ensurepip	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
html	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
http	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
importlib	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
json	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
lib-dynload	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
lib2to3	[ DIR ]	drwxr-xr-x	2025-01-21 09:46
logging	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
multiprocessing	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
pydoc_data	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
site-packages	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
sqlite3	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
unittest	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
urllib	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
venv	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
wsgiref	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
xml	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
xmlrpc	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
zoneinfo	[ DIR ]	drwxr-xr-x	2025-01-21 09:39
LICENSE.txt	13.61 KB	-rw-r--r--	2024-12-03 17:27
__future__.py	5.03 KB	-rw-r--r--	2024-12-03 17:27
__phello__.foo.py	64 B	-rw-r--r--	2024-12-03 17:27
_aix_support.py	3.19 KB	-rw-r--r--	2024-12-03 17:27
_bootsubprocess.py	2.61 KB	-rw-r--r--	2024-12-03 17:27
_collections_abc.py	31.53 KB	-rw-r--r--	2024-12-03 17:27
_compat_pickle.py	8.54 KB	-rw-r--r--	2024-12-03 17:27
_compression.py	5.55 KB	-rw-r--r--	2024-12-03 17:27
_markupbase.py	14.31 KB	-rw-r--r--	2024-12-03 17:27
_osx_support.py	21.28 KB	-rw-r--r--	2024-12-03 17:27
_py_abc.py	6.04 KB	-rw-r--r--	2024-12-03 17:27
_pydecimal.py	223.32 KB	-rw-r--r--	2024-12-03 17:27
_pyio.py	92.25 KB	-rw-r--r--	2024-12-03 17:27
_sitebuiltins.py	3.05 KB	-rw-r--r--	2024-12-03 17:27
_strptime.py	24.68 KB	-rw-r--r--	2024-12-03 17:27
_sysconfigdata__linux_x86_64-linux-gnu.py	40.38 KB	-rw-r--r--	2025-01-09 16:15
_sysconfigdata_d_linux_x86_64-linux-gnu.py	39.81 KB	-rw-r--r--	2025-01-09 16:04
_threading_local.py	7.05 KB	-rw-r--r--	2024-12-03 17:27
_weakrefset.py	5.78 KB	-rw-r--r--	2024-12-03 17:27
abc.py	6.37 KB	-rw-r--r--	2024-12-03 17:27
aifc.py	31.84 KB	-rw-r--r--	2024-12-03 17:27
antigravity.py	500 B	-rw-r--r--	2024-12-03 17:27
argparse.py	96.23 KB	-rw-r--r--	2024-12-03 17:27
ast.py	58.5 KB	-rw-r--r--	2024-12-03 17:27
asynchat.py	11.25 KB	-rw-r--r--	2024-12-03 17:27
asyncore.py	19.79 KB	-rw-r--r--	2024-12-03 17:27
base64.py	20.37 KB	-rwxr-xr-x	2024-12-03 17:27
bdb.py	31.64 KB	-rw-r--r--	2024-12-03 17:27
binhex.py	14.44 KB	-rw-r--r--	2024-12-03 17:27
bisect.py	3.06 KB	-rw-r--r--	2024-12-03 17:27
bz2.py	11.57 KB	-rw-r--r--	2024-12-03 17:27
cProfile.py	6.21 KB	-rwxr-xr-x	2024-12-03 17:27
calendar.py	24 KB	-rw-r--r--	2024-12-03 17:27
cgi.py	33.31 KB	-rwxr-xr-x	2024-12-03 17:27
cgitb.py	11.81 KB	-rw-r--r--	2024-12-03 17:27
chunk.py	5.31 KB	-rw-r--r--	2024-12-03 17:27
cmd.py	14.51 KB	-rw-r--r--	2024-12-03 17:27
code.py	10.37 KB	-rw-r--r--	2024-12-03 17:27
codecs.py	35.85 KB	-rw-r--r--	2024-12-03 17:27
codeop.py	5.48 KB	-rw-r--r--	2024-12-03 17:27
colorsys.py	3.92 KB	-rw-r--r--	2024-12-03 17:27
compileall.py	19.78 KB	-rw-r--r--	2024-12-03 17:27
configparser.py	53.33 KB	-rw-r--r--	2024-12-03 17:27
contextlib.py	25.28 KB	-rw-r--r--	2024-12-03 17:27
contextvars.py	129 B	-rw-r--r--	2024-12-03 17:27
copy.py	8.48 KB	-rw-r--r--	2024-12-03 17:27
copyreg.py	7.25 KB	-rw-r--r--	2024-12-03 17:27
crypt.py	3.76 KB	-rw-r--r--	2024-12-03 17:27
csv.py	15.65 KB	-rw-r--r--	2024-12-03 17:27
dataclasses.py	55.07 KB	-rw-r--r--	2024-12-03 17:27
datetime.py	86.02 KB	-rw-r--r--	2024-12-03 17:27
decimal.py	320 B	-rw-r--r--	2024-12-03 17:27
difflib.py	81.36 KB	-rw-r--r--	2024-12-03 17:27
dis.py	19.55 KB	-rw-r--r--	2024-12-03 17:27
doctest.py	102.68 KB	-rw-r--r--	2024-12-03 17:27
enum.py	38.9 KB	-rw-r--r--	2024-12-03 17:27
filecmp.py	9.94 KB	-rw-r--r--	2024-12-03 17:27
fileinput.py	16.06 KB	-rw-r--r--	2024-12-03 17:27
fnmatch.py	6.56 KB	-rw-r--r--	2024-12-03 17:27
fractions.py	27.58 KB	-rw-r--r--	2024-12-03 17:27
ftplib.py	34.66 KB	-rw-r--r--	2024-12-03 17:27
functools.py	37.18 KB	-rw-r--r--	2024-12-03 17:27
genericpath.py	4.86 KB	-rw-r--r--	2024-12-03 17:27
getopt.py	7.31 KB	-rw-r--r--	2024-12-03 17:27
getpass.py	5.85 KB	-rw-r--r--	2024-12-03 17:27
gettext.py	26.63 KB	-rw-r--r--	2024-12-03 17:27
glob.py	7.7 KB	-rw-r--r--	2024-12-03 17:27
graphlib.py	9.35 KB	-rw-r--r--	2024-12-03 17:27
gzip.py	21.34 KB	-rw-r--r--	2024-12-03 17:27
hashlib.py	9.99 KB	-rw-r--r--	2024-12-03 17:27
heapq.py	22.34 KB	-rw-r--r--	2024-12-03 17:27
hmac.py	7.54 KB	-rw-r--r--	2024-12-03 17:27
imaplib.py	53.58 KB	-rw-r--r--	2024-12-03 17:27
imghdr.py	3.72 KB	-rw-r--r--	2024-12-03 17:27
imp.py	10.34 KB	-rw-r--r--	2024-12-03 17:27
inspect.py	121.46 KB	-rw-r--r--	2024-12-03 17:27
io.py	4.1 KB	-rw-r--r--	2024-12-03 17:27
ipaddress.py	76.71 KB	-rw-r--r--	2024-12-03 17:27
keyword.py	1.04 KB	-rw-r--r--	2024-12-03 17:27
linecache.py	5.56 KB	-rw-r--r--	2024-12-03 17:27
locale.py	76.29 KB	-rw-r--r--	2024-12-03 17:27
lzma.py	12.97 KB	-rw-r--r--	2024-12-03 17:27
mailbox.py	76.95 KB	-rw-r--r--	2024-12-03 17:27
mailcap.py	8.9 KB	-rw-r--r--	2024-12-03 17:27
mimetypes.py	22.01 KB	-rw-r--r--	2024-12-03 17:27
modulefinder.py	23.83 KB	-rw-r--r--	2024-12-03 17:27
netrc.py	5.61 KB	-rw-r--r--	2024-12-03 17:27
nntplib.py	40.06 KB	-rw-r--r--	2024-12-03 17:27
ntpath.py	28.79 KB	-rw-r--r--	2024-12-03 17:27
nturl2path.py	2.82 KB	-rw-r--r--	2024-12-03 17:27
numbers.py	10.11 KB	-rw-r--r--	2024-12-03 17:27
opcode.py	5.76 KB	-rw-r--r--	2024-12-03 17:27
operator.py	10.5 KB	-rw-r--r--	2024-12-03 17:27
optparse.py	58.95 KB	-rw-r--r--	2024-12-03 17:27
os.py	38.63 KB	-rw-r--r--	2024-12-03 17:27
pathlib.py	48.41 KB	-rw-r--r--	2024-12-03 17:27
pdb.py	61.76 KB	-rwxr-xr-x	2024-12-03 17:27
pickle.py	63.43 KB	-rw-r--r--	2024-12-03 17:27
pickletools.py	91.29 KB	-rw-r--r--	2024-12-03 17:27
pipes.py	8.71 KB	-rw-r--r--	2024-12-03 17:27
pkgutil.py	24 KB	-rw-r--r--	2024-12-03 17:27
platform.py	41.05 KB	-rwxr-xr-x	2024-12-03 17:27
plistlib.py	27.69 KB	-rw-r--r--	2024-12-03 17:27
poplib.py	14.84 KB	-rw-r--r--	2024-12-03 17:27
posixpath.py	15.87 KB	-rw-r--r--	2024-12-03 17:27
pprint.py	23.87 KB	-rw-r--r--	2024-12-03 17:27
profile.py	22.36 KB	-rwxr-xr-x	2024-12-03 17:27
pstats.py	28.64 KB	-rw-r--r--	2024-12-03 17:27
pty.py	5.09 KB	-rw-r--r--	2024-12-03 17:27
py_compile.py	7.71 KB	-rw-r--r--	2025-01-09 16:01
pyclbr.py	11.13 KB	-rw-r--r--	2024-12-03 17:27
pydoc.py	107.03 KB	-rwxr-xr-x	2024-12-03 17:27
queue.py	11.23 KB	-rw-r--r--	2024-12-03 17:27
quopri.py	7.11 KB	-rwxr-xr-x	2024-12-03 17:27
random.py	32.44 KB	-rw-r--r--	2024-12-03 17:27
re.py	15.49 KB	-rw-r--r--	2024-12-03 17:27
reprlib.py	5.14 KB	-rw-r--r--	2024-12-03 17:27
rlcompleter.py	7.63 KB	-rw-r--r--	2024-12-03 17:27
runpy.py	12.8 KB	-rw-r--r--	2024-12-03 17:27
sched.py	6.2 KB	-rw-r--r--	2024-12-03 17:27
secrets.py	1.99 KB	-rw-r--r--	2024-12-03 17:27
selectors.py	19.08 KB	-rw-r--r--	2024-12-03 17:27
shelve.py	8.36 KB	-rw-r--r--	2024-12-03 17:27
shlex.py	13.18 KB	-rw-r--r--	2024-12-03 17:27
shutil.py	53.29 KB	-rw-r--r--	2024-12-03 17:27
signal.py	2.38 KB	-rw-r--r--	2024-12-03 17:27
site.py	22.39 KB	-rw-r--r--	2024-12-03 17:27
smtpd.py	34.35 KB	-rwxr-xr-x	2024-12-03 17:27
smtplib.py	44.37 KB	-rwxr-xr-x	2024-12-03 17:27
sndhdr.py	6.93 KB	-rw-r--r--	2024-12-03 17:27
socket.py	36.14 KB	-rw-r--r--	2024-12-03 17:27
socketserver.py	26.66 KB	-rw-r--r--	2024-12-03 17:27
sre_compile.py	27.32 KB	-rw-r--r--	2024-12-03 17:27
sre_constants.py	7.01 KB	-rw-r--r--	2024-12-03 17:27
sre_parse.py	39.82 KB	-rw-r--r--	2024-12-03 17:27
ssl.py	52.63 KB	-rw-r--r--	2024-12-03 17:27
stat.py	5.36 KB	-rw-r--r--	2024-12-03 17:27
statistics.py	42.19 KB	-rw-r--r--	2024-12-03 17:27
string.py	10.32 KB	-rw-r--r--	2024-12-03 17:27
stringprep.py	12.61 KB	-rw-r--r--	2024-12-03 17:27
struct.py	257 B	-rw-r--r--	2024-12-03 17:27
subprocess.py	82.93 KB	-rw-r--r--	2024-12-03 17:27
sunau.py	17.73 KB	-rw-r--r--	2024-12-03 17:27
symtable.py	9.98 KB	-rw-r--r--	2024-12-03 17:27
sysconfig.py	26.96 KB	-rw-r--r--	2024-12-03 17:27
tabnanny.py	11.05 KB	-rwxr-xr-x	2024-12-03 17:27
tarfile.py	105.13 KB	-rwxr-xr-x	2024-12-03 17:27
telnetlib.py	22.71 KB	-rw-r--r--	2024-12-03 17:27
tempfile.py	28.78 KB	-rw-r--r--	2024-12-03 17:27
textwrap.py	19.31 KB	-rw-r--r--	2024-12-03 17:27
this.py	1003 B	-rw-r--r--	2024-12-03 17:27
threading.py	55.41 KB	-rw-r--r--	2025-01-09 16:01
timeit.py	13.19 KB	-rwxr-xr-x	2024-12-03 17:27
token.py	2.33 KB	-rw-r--r--	2024-12-03 17:27
tokenize.py	25.31 KB	-rw-r--r--	2024-12-03 17:27
trace.py	28.54 KB	-rwxr-xr-x	2024-12-03 17:27
traceback.py	25.61 KB	-rw-r--r--	2024-12-03 17:27
tracemalloc.py	17.62 KB	-rw-r--r--	2024-12-03 17:27
tty.py	879 B	-rw-r--r--	2024-12-03 17:27
types.py	9.88 KB	-rw-r--r--	2024-12-03 17:27
typing.py	90.39 KB	-rw-r--r--	2024-12-03 17:27
uu.py	7.11 KB	-rw-r--r--	2025-01-09 16:16
uuid.py	26.86 KB	-rw-r--r--	2024-12-03 17:27
warnings.py	19.23 KB	-rw-r--r--	2024-12-03 17:27
wave.py	17.58 KB	-rw-r--r--	2024-12-03 17:27
weakref.py	21.05 KB	-rw-r--r--	2024-12-03 17:27
webbrowser.py	23.69 KB	-rwxr-xr-x	2024-12-03 17:27
xdrlib.py	5.77 KB	-rw-r--r--	2024-12-03 17:27
zipapp.py	7.36 KB	-rw-r--r--	2024-12-03 17:27
zipfile.py	88.09 KB	-rw-r--r--	2024-12-03 17:27
zipimport.py	30.17 KB	-rw-r--r--	2024-12-03 17:27

Rename

"""A lexical analyzer class for simple shell-like syntaxes."""

# Module and documentation by Eric S. Raymond, 21 Dec 1998
# Input stacking and error message cleanup added by ESR, March 2000
# push_source() and pop_source() made explicit by ESR, January 2001.
# Posix compliance, split(), string arguments, and
# iterator interface by Gustavo Niemeyer, April 2003.
# changes to tokenize more like Posix shells by Vinay Sajip, July 2016.

import os
import re
import sys
from collections import deque

from io import StringIO

__all__ = ["shlex", "split", "quote", "join"]

class shlex:
    "A lexical analyzer class for simple shell-like syntaxes."
    def __init__(self, instream=None, infile=None, posix=False,
                 punctuation_chars=False):
        if isinstance(instream, str):
            instream = StringIO(instream)
        if instream is not None:
            self.instream = instream
            self.infile = infile
        else:
            self.instream = sys.stdin
            self.infile = None
        self.posix = posix
        if posix:
            self.eof = None
        else:
            self.eof = ''
        self.commenters = '#'
        self.wordchars = ('abcdfeghijklmnopqrstuvwxyz'
                          'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_')
        if self.posix:
            self.wordchars += ('ßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿ'
                               'ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞ')
        self.whitespace = ' \t\r\n'
        self.whitespace_split = False
        self.quotes = '\'"'
        self.escape = '\\'
        self.escapedquotes = '"'
        self.state = ' '
        self.pushback = deque()
        self.lineno = 1
        self.debug = 0
        self.token = ''
        self.filestack = deque()
        self.source = None
        if not punctuation_chars:
            punctuation_chars = ''
        elif punctuation_chars is True:
            punctuation_chars = '();<>|&'
        self._punctuation_chars = punctuation_chars
        if punctuation_chars:
            # _pushback_chars is a push back queue used by lookahead logic
            self._pushback_chars = deque()
            # these chars added because allowed in file names, args, wildcards
            self.wordchars += '~-./*?='
            #remove any punctuation chars from wordchars
            t = self.wordchars.maketrans(dict.fromkeys(punctuation_chars))
            self.wordchars = self.wordchars.translate(t)

@property
    def punctuation_chars(self):
        return self._punctuation_chars

def push_token(self, tok):
        "Push a token onto the stack popped by the get_token method"
        if self.debug >= 1:
            print("shlex: pushing token " + repr(tok))
        self.pushback.appendleft(tok)

def push_source(self, newstream, newfile=None):
        "Push an input source onto the lexer's input source stack."
        if isinstance(newstream, str):
            newstream = StringIO(newstream)
        self.filestack.appendleft((self.infile, self.instream, self.lineno))
        self.infile = newfile
        self.instream = newstream
        self.lineno = 1
        if self.debug:
            if newfile is not None:
                print('shlex: pushing to file %s' % (self.infile,))
            else:
                print('shlex: pushing to stream %s' % (self.instream,))

def pop_source(self):
        "Pop the input source stack."
        self.instream.close()
        (self.infile, self.instream, self.lineno) = self.filestack.popleft()
        if self.debug:
            print('shlex: popping to %s, line %d' \
                  % (self.instream, self.lineno))
        self.state = ' '

def get_token(self):
        "Get a token from the input stream (or from stack if it's nonempty)"
        if self.pushback:
            tok = self.pushback.popleft()
            if self.debug >= 1:
                print("shlex: popping token " + repr(tok))
            return tok
        # No pushback.  Get a token.
        raw = self.read_token()
        # Handle inclusions
        if self.source is not None:
            while raw == self.source:
                spec = self.sourcehook(self.read_token())
                if spec:
                    (newfile, newstream) = spec
                    self.push_source(newstream, newfile)
                raw = self.get_token()
        # Maybe we got EOF instead?
        while raw == self.eof:
            if not self.filestack:
                return self.eof
            else:
                self.pop_source()
                raw = self.get_token()
        # Neither inclusion nor EOF
        if self.debug >= 1:
            if raw != self.eof:
                print("shlex: token=" + repr(raw))
            else:
                print("shlex: token=EOF")
        return raw

def read_token(self):
        quoted = False
        escapedstate = ' '
        while True:
            if self.punctuation_chars and self._pushback_chars:
                nextchar = self._pushback_chars.pop()
            else:
                nextchar = self.instream.read(1)
            if nextchar == '\n':
                self.lineno += 1
            if self.debug >= 3:
                print("shlex: in state %r I see character: %r" % (self.state,
                                                                  nextchar))
            if self.state is None:
                self.token = ''        # past end of file
                break
            elif self.state == ' ':
                if not nextchar:
                    self.state = None  # end of file
                    break
                elif nextchar in self.whitespace:
                    if self.debug >= 2:
                        print("shlex: I see whitespace in whitespace state")
                    if self.token or (self.posix and quoted):
                        break   # emit current token
                    else:
                        continue
                elif nextchar in self.commenters:
                    self.instream.readline()
                    self.lineno += 1
                elif self.posix and nextchar in self.escape:
                    escapedstate = 'a'
                    self.state = nextchar
                elif nextchar in self.wordchars:
                    self.token = nextchar
                    self.state = 'a'
                elif nextchar in self.punctuation_chars:
                    self.token = nextchar
                    self.state = 'c'
                elif nextchar in self.quotes:
                    if not self.posix:
                        self.token = nextchar
                    self.state = nextchar
                elif self.whitespace_split:
                    self.token = nextchar
                    self.state = 'a'
                else:
                    self.token = nextchar
                    if self.token or (self.posix and quoted):
                        break   # emit current token
                    else:
                        continue
            elif self.state in self.quotes:
                quoted = True
                if not nextchar:      # end of file
                    if self.debug >= 2:
                        print("shlex: I see EOF in quotes state")
                    # XXX what error should be raised here?
                    raise ValueError("No closing quotation")
                if nextchar == self.state:
                    if not self.posix:
                        self.token += nextchar
                        self.state = ' '
                        break
                    else:
                        self.state = 'a'
                elif (self.posix and nextchar in self.escape and self.state
                      in self.escapedquotes):
                    escapedstate = self.state
                    self.state = nextchar
                else:
                    self.token += nextchar
            elif self.state in self.escape:
                if not nextchar:      # end of file
                    if self.debug >= 2:
                        print("shlex: I see EOF in escape state")
                    # XXX what error should be raised here?
                    raise ValueError("No escaped character")
                # In posix shells, only the quote itself or the escape
                # character may be escaped within quotes.
                if (escapedstate in self.quotes and
                        nextchar != self.state and nextchar != escapedstate):
                    self.token += self.state
                self.token += nextchar
                self.state = escapedstate
            elif self.state in ('a', 'c'):
                if not nextchar:
                    self.state = None   # end of file
                    break
                elif nextchar in self.whitespace:
                    if self.debug >= 2:
                        print("shlex: I see whitespace in word state")
                    self.state = ' '
                    if self.token or (self.posix and quoted):
                        break   # emit current token
                    else:
                        continue
                elif nextchar in self.commenters:
                    self.instream.readline()
                    self.lineno += 1
                    if self.posix:
                        self.state = ' '
                        if self.token or (self.posix and quoted):
                            break   # emit current token
                        else:
                            continue
                elif self.state == 'c':
                    if nextchar in self.punctuation_chars:
                        self.token += nextchar
                    else:
                        if nextchar not in self.whitespace:
                            self._pushback_chars.append(nextchar)
                        self.state = ' '
                        break
                elif self.posix and nextchar in self.quotes:
                    self.state = nextchar
                elif self.posix and nextchar in self.escape:
                    escapedstate = 'a'
                    self.state = nextchar
                elif (nextchar in self.wordchars or nextchar in self.quotes
                      or (self.whitespace_split and
                          nextchar not in self.punctuation_chars)):
                    self.token += nextchar
                else:
                    if self.punctuation_chars:
                        self._pushback_chars.append(nextchar)
                    else:
                        self.pushback.appendleft(nextchar)
                    if self.debug >= 2:
                        print("shlex: I see punctuation in word state")
                    self.state = ' '
                    if self.token or (self.posix and quoted):
                        break   # emit current token
                    else:
                        continue
        result = self.token
        self.token = ''
        if self.posix and not quoted and result == '':
            result = None
        if self.debug > 1:
            if result:
                print("shlex: raw token=" + repr(result))
            else:
                print("shlex: raw token=EOF")
        return result

def sourcehook(self, newfile):
        "Hook called on a filename to be sourced."
        if newfile[0] == '"':
            newfile = newfile[1:-1]
        # This implements cpp-like semantics for relative-path inclusion.
        if isinstance(self.infile, str) and not os.path.isabs(newfile):
            newfile = os.path.join(os.path.dirname(self.infile), newfile)
        return (newfile, open(newfile, "r"))

def error_leader(self, infile=None, lineno=None):
        "Emit a C-compiler-like, Emacs-friendly error-message leader."
        if infile is None:
            infile = self.infile
        if lineno is None:
            lineno = self.lineno
        return "\"%s\", line %d: " % (infile, lineno)

def __iter__(self):
        return self

def __next__(self):
        token = self.get_token()
        if token == self.eof:
            raise StopIteration
        return token

def split(s, comments=False, posix=True):
    """Split the string *s* using shell-like syntax."""
    if s is None:
        import warnings
        warnings.warn("Passing None for 's' to shlex.split() is deprecated.",
                      DeprecationWarning, stacklevel=2)
    lex = shlex(s, posix=posix)
    lex.whitespace_split = True
    if not comments:
        lex.commenters = ''
    return list(lex)

def join(split_command):
    """Return a shell-escaped string from *split_command*."""
    return ' '.join(quote(arg) for arg in split_command)

_find_unsafe = re.compile(r'[^\w@%+=:,./-]', re.ASCII).search

def quote(s):
    """Return a shell-escaped version of the string *s*."""
    if not s:
        return "''"
    if _find_unsafe(s) is None:
        return s

# use single quotes, and put single quotes into double quotes
    # the string $'b is then quoted as '$'"'"'b'
    return "'" + s.replace("'", "'\"'\"'") + "'"

def _print_tokens(lexer):
    while 1:
        tt = lexer.get_token()
        if not tt:
            break
        print("Token: " + repr(tt))

if __name__ == '__main__':
    if len(sys.argv) == 1:
        _print_tokens(shlex())
    else:
        fn = sys.argv[1]
        with open(fn) as f:
            _print_tokens(shlex(f, fn))