Gecko [ sachasauda.akalacademy.ac.in ]

Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
asyncio	[ DIR ]	drwxr-xr-x
collections	[ DIR ]	drwxr-xr-x
concurrent	[ DIR ]	drwxr-xr-x
config-3.5m	[ DIR ]	drwxr-xr-x
ctypes	[ DIR ]	drwxr-xr-x
curses	[ DIR ]	drwxr-xr-x
dbm	[ DIR ]	drwxr-xr-x
distutils	[ DIR ]	drwxr-xr-x
email	[ DIR ]	drwxr-xr-x
encodings	[ DIR ]	drwxr-xr-x
ensurepip	[ DIR ]	drwxr-xr-x
html	[ DIR ]	drwxr-xr-x
http	[ DIR ]	drwxr-xr-x
idlelib	[ DIR ]	drwxr-xr-x
importlib	[ DIR ]	drwxr-xr-x
json	[ DIR ]	drwxr-xr-x
lib-dynload	[ DIR ]	drwxr-xr-x
lib2to3	[ DIR ]	drwxr-xr-x
logging	[ DIR ]	drwxr-xr-x
multiprocessing	[ DIR ]	drwxr-xr-x
plat-linux	[ DIR ]	drwxr-xr-x
pydoc_data	[ DIR ]	drwxr-xr-x
site-packages	[ DIR ]	drwxr-xr-x
sqlite3	[ DIR ]	drwxr-xr-x
tkinter	[ DIR ]	drwxr-xr-x
turtledemo	[ DIR ]	drwxr-xr-x
unittest	[ DIR ]	drwxr-xr-x
urllib	[ DIR ]	drwxr-xr-x
venv	[ DIR ]	drwxr-xr-x
wsgiref	[ DIR ]	drwxr-xr-x
xml	[ DIR ]	drwxr-xr-x
xmlrpc	[ DIR ]	drwxr-xr-x
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__phello__.foo.py	64 B	-rw-r--r--
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_osx_support.py	18.67 KB	-rw-r--r--
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_threading_local.py	7.24 KB	-rw-r--r--
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abc.py	8.43 KB	-rw-r--r--
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argparse.py	88.03 KB	-rw-r--r--
ast.py	11.72 KB	-rw-r--r--
asynchat.py	11.69 KB	-rw-r--r--
asyncore.py	19.63 KB	-rw-r--r--
base64.py	20.03 KB	-rwxr-xr-x
bdb.py	22.81 KB	-rw-r--r--
binhex.py	13.63 KB	-rw-r--r--
bisect.py	2.53 KB	-rw-r--r--
bz2.py	12.13 KB	-rw-r--r--
cProfile.py	5.19 KB	-rwxr-xr-x
calendar.py	22.46 KB	-rw-r--r--
cgi.py	35.2 KB	-rwxr-xr-x
cgitb.py	11.74 KB	-rw-r--r--
chunk.py	5.3 KB	-rw-r--r--
cmd.py	14.51 KB	-rw-r--r--
code.py	9.88 KB	-rw-r--r--
codecs.py	35.38 KB	-rw-r--r--
codeop.py	5.85 KB	-rw-r--r--
colorsys.py	3.97 KB	-rw-r--r--
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configparser.py	52.2 KB	-rw-r--r--
contextlib.py	12.16 KB	-rw-r--r--
copy.py	8.74 KB	-rw-r--r--
copyreg.py	6.67 KB	-rw-r--r--
crypt.py	1.83 KB	-rw-r--r--
csv.py	15.75 KB	-rw-r--r--
datetime.py	74.12 KB	-rw-r--r--
decimal.py	320 B	-rw-r--r--
difflib.py	82.23 KB	-rw-r--r--
dis.py	16.94 KB	-rw-r--r--
doctest.py	101.6 KB	-rw-r--r--
dummy_threading.py	2.75 KB	-rw-r--r--
enum.py	21.71 KB	-rw-r--r--
filecmp.py	9.6 KB	-rw-r--r--
fileinput.py	13.92 KB	-rw-r--r--
fnmatch.py	3.09 KB	-rw-r--r--
formatter.py	14.79 KB	-rw-r--r--
fractions.py	24.04 KB	-rw-r--r--
ftplib.py	34.13 KB	-rw-r--r--
functools.py	28.27 KB	-rw-r--r--
genericpath.py	4.26 KB	-rw-r--r--
getopt.py	7.31 KB	-rw-r--r--
getpass.py	5.85 KB	-rw-r--r--
gettext.py	21.03 KB	-rw-r--r--
glob.py	4.95 KB	-rw-r--r--
gzip.py	19.79 KB	-rw-r--r--
hashlib.py	7.79 KB	-rw-r--r--
heapq.py	22.39 KB	-rw-r--r--
hmac.py	4.94 KB	-rw-r--r--
imaplib.py	50.96 KB	-rw-r--r--
imghdr.py	3.67 KB	-rw-r--r--
imp.py	10.43 KB	-rw-r--r--
inspect.py	111.52 KB	-rw-r--r--
io.py	3.32 KB	-rw-r--r--
ipaddress.py	73.96 KB	-rw-r--r--
keyword.py	2.16 KB	-rwxr-xr-x
linecache.py	5.19 KB	-rw-r--r--
locale.py	72.96 KB	-rw-r--r--
lzma.py	12.62 KB	-rw-r--r--
macpath.py	5.77 KB	-rw-r--r--
macurl2path.py	2.67 KB	-rw-r--r--
mailbox.py	76.58 KB	-rw-r--r--
mailcap.py	7.91 KB	-rw-r--r--
mimetypes.py	20.36 KB	-rw-r--r--
modulefinder.py	22.54 KB	-rw-r--r--
netrc.py	5.61 KB	-rw-r--r--
nntplib.py	42.07 KB	-rw-r--r--
ntpath.py	22.26 KB	-rw-r--r--
nturl2path.py	2.39 KB	-rw-r--r--
numbers.py	10 KB	-rw-r--r--
opcode.py	5.75 KB	-rw-r--r--
operator.py	10.61 KB	-rw-r--r--
optparse.py	58.93 KB	-rw-r--r--
os.py	36.17 KB	-rw-r--r--
pathlib.py	45.9 KB	-rw-r--r--
pdb.py	59.71 KB	-rwxr-xr-x
pickle.py	54.86 KB	-rw-r--r--
pickletools.py	89.61 KB	-rw-r--r--
pipes.py	8.71 KB	-rw-r--r--
pkgutil.py	20.85 KB	-rw-r--r--
platform.py	45.05 KB	-rwxr-xr-x
plistlib.py	30.73 KB	-rw-r--r--
poplib.py	14.37 KB	-rw-r--r--
posixpath.py	14.56 KB	-rw-r--r--
pprint.py	20.37 KB	-rw-r--r--
profile.py	21.5 KB	-rwxr-xr-x
pstats.py	25.94 KB	-rw-r--r--
pty.py	4.65 KB	-rw-r--r--
py_compile.py	7.01 KB	-rw-r--r--
pyclbr.py	13.25 KB	-rw-r--r--
pydoc.py	101.21 KB	-rwxr-xr-x
queue.py	8.57 KB	-rw-r--r--
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random.py	25.84 KB	-rw-r--r--
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reprlib.py	5.21 KB	-rw-r--r--
rlcompleter.py	6.16 KB	-rw-r--r--
runpy.py	11.68 KB	-rw-r--r--
sched.py	6.07 KB	-rw-r--r--
selectors.py	18.98 KB	-rw-r--r--
shelve.py	8.33 KB	-rw-r--r--
shlex.py	11.18 KB	-rw-r--r--
shutil.py	39.11 KB	-rw-r--r--
signal.py	2.07 KB	-rw-r--r--
site.py	20.74 KB	-rw-r--r--
smtpd.py	34.53 KB	-rwxr-xr-x
smtplib.py	42.6 KB	-rwxr-xr-x
sndhdr.py	6.27 KB	-rw-r--r--
socket.py	26.5 KB	-rw-r--r--
socketserver.py	24.09 KB	-rw-r--r--
sre_compile.py	17.98 KB	-rw-r--r--
sre_constants.py	6.66 KB	-rw-r--r--
sre_parse.py	34.29 KB	-rw-r--r--
ssl.py	41.36 KB	-rw-r--r--
stat.py	4.92 KB	-rw-r--r--
statistics.py	19.08 KB	-rw-r--r--
string.py	11.58 KB	-rw-r--r--
stringprep.py	12.61 KB	-rw-r--r--
struct.py	257 B	-rw-r--r--
subprocess.py	57.53 KB	-rw-r--r--
sunau.py	17.67 KB	-rw-r--r--
symbol.py	2.05 KB	-rwxr-xr-x
symtable.py	7.02 KB	-rw-r--r--
sysconfig.py	23.77 KB	-rw-r--r--
tabnanny.py	11.14 KB	-rwxr-xr-x
tarfile.py	90.88 KB	-rwxr-xr-x
telnetlib.py	22.48 KB	-rw-r--r--
tempfile.py	26.01 KB	-rw-r--r--
textwrap.py	19.1 KB	-rw-r--r--
this.py	1003 B	-rw-r--r--
threading.py	47.88 KB	-rw-r--r--
timeit.py	12.1 KB	-rwxr-xr-x
token.py	3 KB	-rw-r--r--
tokenize.py	27.14 KB	-rw-r--r--
trace.py	30.8 KB	-rwxr-xr-x
traceback.py	21.66 KB	-rw-r--r--
tracemalloc.py	15.27 KB	-rw-r--r--
tty.py	879 B	-rw-r--r--
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types.py	8.59 KB	-rw-r--r--
typing.py	78.26 KB	-rw-r--r--
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uuid.py	22.72 KB	-rw-r--r--
warnings.py	15.48 KB	-rw-r--r--
wave.py	17.27 KB	-rw-r--r--
weakref.py	19.99 KB	-rw-r--r--
webbrowser.py	21.31 KB	-rwxr-xr-x
xdrlib.py	5.77 KB	-rw-r--r--
zipapp.py	6.99 KB	-rw-r--r--
zipfile.py	71.95 KB	-rw-r--r--

Code Editor : binhex.py

"""Macintosh binhex compression/decompression.

easy interface:
binhex(inputfilename, outputfilename)
hexbin(inputfilename, outputfilename)
"""

#
# Jack Jansen, CWI, August 1995.
#
# The module is supposed to be as compatible as possible. Especially the
# easy interface should work "as expected" on any platform.
# XXXX Note: currently, textfiles appear in mac-form on all platforms.
# We seem to lack a simple character-translate in python.
# (we should probably use ISO-Latin-1 on all but the mac platform).
# XXXX The simple routines are too simple: they expect to hold the complete
# files in-core. Should be fixed.
# XXXX It would be nice to handle AppleDouble format on unix
# (for servers serving macs).
# XXXX I don't understand what happens when you get 0x90 times the same byte on
# input. The resulting code (xx 90 90) would appear to be interpreted as an
# escaped *value* of 0x90. All coders I've seen appear to ignore this nicety...
#
import io
import os
import struct
import binascii

__all__ = ["binhex","hexbin","Error"]

class Error(Exception):
    pass

# States (what have we written)
_DID_HEADER = 0
_DID_DATA = 1

# Various constants
REASONABLY_LARGE = 32768  # Minimal amount we pass the rle-coder
LINELEN = 64
RUNCHAR = b"\x90"

#
# This code is no longer byte-order dependent

class FInfo:
    def __init__(self):
        self.Type = '????'
        self.Creator = '????'
        self.Flags = 0

def getfileinfo(name):
    finfo = FInfo()
    with io.open(name, 'rb') as fp:
        # Quick check for textfile
        data = fp.read(512)
        if 0 not in data:
            finfo.Type = 'TEXT'
        fp.seek(0, 2)
        dsize = fp.tell()
    dir, file = os.path.split(name)
    file = file.replace(':', '-', 1)
    return file, finfo, dsize, 0

class openrsrc:
    def __init__(self, *args):
        pass

def read(self, *args):
        return b''

def write(self, *args):
        pass

def close(self):
        pass

class _Hqxcoderengine:
    """Write data to the coder in 3-byte chunks"""

def __init__(self, ofp):
        self.ofp = ofp
        self.data = b''
        self.hqxdata = b''
        self.linelen = LINELEN - 1

def write(self, data):
        self.data = self.data + data
        datalen = len(self.data)
        todo = (datalen // 3) * 3
        data = self.data[:todo]
        self.data = self.data[todo:]
        if not data:
            return
        self.hqxdata = self.hqxdata + binascii.b2a_hqx(data)
        self._flush(0)

def _flush(self, force):
        first = 0
        while first <= len(self.hqxdata) - self.linelen:
            last = first + self.linelen
            self.ofp.write(self.hqxdata[first:last] + b'\n')
            self.linelen = LINELEN
            first = last
        self.hqxdata = self.hqxdata[first:]
        if force:
            self.ofp.write(self.hqxdata + b':\n')

def close(self):
        if self.data:
            self.hqxdata = self.hqxdata + binascii.b2a_hqx(self.data)
        self._flush(1)
        self.ofp.close()
        del self.ofp

class _Rlecoderengine:
    """Write data to the RLE-coder in suitably large chunks"""

def __init__(self, ofp):
        self.ofp = ofp
        self.data = b''

def write(self, data):
        self.data = self.data + data
        if len(self.data) < REASONABLY_LARGE:
            return
        rledata = binascii.rlecode_hqx(self.data)
        self.ofp.write(rledata)
        self.data = b''

def close(self):
        if self.data:
            rledata = binascii.rlecode_hqx(self.data)
            self.ofp.write(rledata)
        self.ofp.close()
        del self.ofp

class BinHex:
    def __init__(self, name_finfo_dlen_rlen, ofp):
        name, finfo, dlen, rlen = name_finfo_dlen_rlen
        close_on_error = False
        if isinstance(ofp, str):
            ofname = ofp
            ofp = io.open(ofname, 'wb')
            close_on_error = True
        try:
            ofp.write(b'(This file must be converted with BinHex 4.0)\r\r:')
            hqxer = _Hqxcoderengine(ofp)
            self.ofp = _Rlecoderengine(hqxer)
            self.crc = 0
            if finfo is None:
                finfo = FInfo()
            self.dlen = dlen
            self.rlen = rlen
            self._writeinfo(name, finfo)
            self.state = _DID_HEADER
        except:
            if close_on_error:
                ofp.close()
            raise

def _writeinfo(self, name, finfo):
        nl = len(name)
        if nl > 63:
            raise Error('Filename too long')
        d = bytes([nl]) + name.encode("latin-1") + b'\0'
        tp, cr = finfo.Type, finfo.Creator
        if isinstance(tp, str):
            tp = tp.encode("latin-1")
        if isinstance(cr, str):
            cr = cr.encode("latin-1")
        d2 = tp + cr

# Force all structs to be packed with big-endian
        d3 = struct.pack('>h', finfo.Flags)
        d4 = struct.pack('>ii', self.dlen, self.rlen)
        info = d + d2 + d3 + d4
        self._write(info)
        self._writecrc()

def _write(self, data):
        self.crc = binascii.crc_hqx(data, self.crc)
        self.ofp.write(data)

def _writecrc(self):
        # XXXX Should this be here??
        # self.crc = binascii.crc_hqx('\0\0', self.crc)
        if self.crc < 0:
            fmt = '>h'
        else:
            fmt = '>H'
        self.ofp.write(struct.pack(fmt, self.crc))
        self.crc = 0

def write(self, data):
        if self.state != _DID_HEADER:
            raise Error('Writing data at the wrong time')
        self.dlen = self.dlen - len(data)
        self._write(data)

def close_data(self):
        if self.dlen != 0:
            raise Error('Incorrect data size, diff=%r' % (self.rlen,))
        self._writecrc()
        self.state = _DID_DATA

def write_rsrc(self, data):
        if self.state < _DID_DATA:
            self.close_data()
        if self.state != _DID_DATA:
            raise Error('Writing resource data at the wrong time')
        self.rlen = self.rlen - len(data)
        self._write(data)

def close(self):
        if self.state is None:
            return
        try:
            if self.state < _DID_DATA:
                self.close_data()
            if self.state != _DID_DATA:
                raise Error('Close at the wrong time')
            if self.rlen != 0:
                raise Error("Incorrect resource-datasize, diff=%r" % (self.rlen,))
            self._writecrc()
        finally:
            self.state = None
            ofp = self.ofp
            del self.ofp
            ofp.close()

def binhex(inp, out):
    """binhex(infilename, outfilename): create binhex-encoded copy of a file"""
    finfo = getfileinfo(inp)
    ofp = BinHex(finfo, out)

with io.open(inp, 'rb') as ifp:
        # XXXX Do textfile translation on non-mac systems
        while True:
            d = ifp.read(128000)
            if not d: break
            ofp.write(d)
        ofp.close_data()

ifp = openrsrc(inp, 'rb')
    while True:
        d = ifp.read(128000)
        if not d: break
        ofp.write_rsrc(d)
    ofp.close()
    ifp.close()

class _Hqxdecoderengine:
    """Read data via the decoder in 4-byte chunks"""

def __init__(self, ifp):
        self.ifp = ifp
        self.eof = 0

def read(self, totalwtd):
        """Read at least wtd bytes (or until EOF)"""
        decdata = b''
        wtd = totalwtd
        #
        # The loop here is convoluted, since we don't really now how
        # much to decode: there may be newlines in the incoming data.
        while wtd > 0:
            if self.eof: return decdata
            wtd = ((wtd + 2) // 3) * 4
            data = self.ifp.read(wtd)
            #
            # Next problem: there may not be a complete number of
            # bytes in what we pass to a2b. Solve by yet another
            # loop.
            #
            while True:
                try:
                    decdatacur, self.eof = binascii.a2b_hqx(data)
                    break
                except binascii.Incomplete:
                    pass
                newdata = self.ifp.read(1)
                if not newdata:
                    raise Error('Premature EOF on binhex file')
                data = data + newdata
            decdata = decdata + decdatacur
            wtd = totalwtd - len(decdata)
            if not decdata and not self.eof:
                raise Error('Premature EOF on binhex file')
        return decdata

def close(self):
        self.ifp.close()

class _Rledecoderengine:
    """Read data via the RLE-coder"""

def __init__(self, ifp):
        self.ifp = ifp
        self.pre_buffer = b''
        self.post_buffer = b''
        self.eof = 0

def read(self, wtd):
        if wtd > len(self.post_buffer):
            self._fill(wtd - len(self.post_buffer))
        rv = self.post_buffer[:wtd]
        self.post_buffer = self.post_buffer[wtd:]
        return rv

def _fill(self, wtd):
        self.pre_buffer = self.pre_buffer + self.ifp.read(wtd + 4)
        if self.ifp.eof:
            self.post_buffer = self.post_buffer + \
                binascii.rledecode_hqx(self.pre_buffer)
            self.pre_buffer = b''
            return

#
        # Obfuscated code ahead. We have to take care that we don't
        # end up with an orphaned RUNCHAR later on. So, we keep a couple
        # of bytes in the buffer, depending on what the end of
        # the buffer looks like:
        # '\220\0\220' - Keep 3 bytes: repeated \220 (escaped as \220\0)
        # '?\220' - Keep 2 bytes: repeated something-else
        # '\220\0' - Escaped \220: Keep 2 bytes.
        # '?\220?' - Complete repeat sequence: decode all
        # otherwise: keep 1 byte.
        #
        mark = len(self.pre_buffer)
        if self.pre_buffer[-3:] == RUNCHAR + b'\0' + RUNCHAR:
            mark = mark - 3
        elif self.pre_buffer[-1:] == RUNCHAR:
            mark = mark - 2
        elif self.pre_buffer[-2:] == RUNCHAR + b'\0':
            mark = mark - 2
        elif self.pre_buffer[-2:-1] == RUNCHAR:
            pass # Decode all
        else:
            mark = mark - 1

self.post_buffer = self.post_buffer + \
            binascii.rledecode_hqx(self.pre_buffer[:mark])
        self.pre_buffer = self.pre_buffer[mark:]

def close(self):
        self.ifp.close()

class HexBin:
    def __init__(self, ifp):
        if isinstance(ifp, str):
            ifp = io.open(ifp, 'rb')
        #
        # Find initial colon.
        #
        while True:
            ch = ifp.read(1)
            if not ch:
                raise Error("No binhex data found")
            # Cater for \r\n terminated lines (which show up as \n\r, hence
            # all lines start with \r)
            if ch == b'\r':
                continue
            if ch == b':':
                break

hqxifp = _Hqxdecoderengine(ifp)
        self.ifp = _Rledecoderengine(hqxifp)
        self.crc = 0
        self._readheader()

def _read(self, len):
        data = self.ifp.read(len)
        self.crc = binascii.crc_hqx(data, self.crc)
        return data

def _checkcrc(self):
        filecrc = struct.unpack('>h', self.ifp.read(2))[0] & 0xffff
        #self.crc = binascii.crc_hqx('\0\0', self.crc)
        # XXXX Is this needed??
        self.crc = self.crc & 0xffff
        if filecrc != self.crc:
            raise Error('CRC error, computed %x, read %x'
                        % (self.crc, filecrc))
        self.crc = 0

def _readheader(self):
        len = self._read(1)
        fname = self._read(ord(len))
        rest = self._read(1 + 4 + 4 + 2 + 4 + 4)
        self._checkcrc()

type = rest[1:5]
        creator = rest[5:9]
        flags = struct.unpack('>h', rest[9:11])[0]
        self.dlen = struct.unpack('>l', rest[11:15])[0]
        self.rlen = struct.unpack('>l', rest[15:19])[0]

self.FName = fname
        self.FInfo = FInfo()
        self.FInfo.Creator = creator
        self.FInfo.Type = type
        self.FInfo.Flags = flags

self.state = _DID_HEADER

def read(self, *n):
        if self.state != _DID_HEADER:
            raise Error('Read data at wrong time')
        if n:
            n = n[0]
            n = min(n, self.dlen)
        else:
            n = self.dlen
        rv = b''
        while len(rv) < n:
            rv = rv + self._read(n-len(rv))
        self.dlen = self.dlen - n
        return rv

def close_data(self):
        if self.state != _DID_HEADER:
            raise Error('close_data at wrong time')
        if self.dlen:
            dummy = self._read(self.dlen)
        self._checkcrc()
        self.state = _DID_DATA

def read_rsrc(self, *n):
        if self.state == _DID_HEADER:
            self.close_data()
        if self.state != _DID_DATA:
            raise Error('Read resource data at wrong time')
        if n:
            n = n[0]
            n = min(n, self.rlen)
        else:
            n = self.rlen
        self.rlen = self.rlen - n
        return self._read(n)

def close(self):
        if self.state is None:
            return
        try:
            if self.rlen:
                dummy = self.read_rsrc(self.rlen)
            self._checkcrc()
        finally:
            self.state = None
            self.ifp.close()

def hexbin(inp, out):
    """hexbin(infilename, outfilename) - Decode binhexed file"""
    ifp = HexBin(inp)
    finfo = ifp.FInfo
    if not out:
        out = ifp.FName

with io.open(out, 'wb') as ofp:
        # XXXX Do translation on non-mac systems
        while True:
            d = ifp.read(128000)
            if not d: break
            ofp.write(d)
    ifp.close_data()

d = ifp.read_rsrc(128000)
    if d:
        ofp = openrsrc(out, 'wb')
        ofp.write(d)
        while True:
            d = ifp.read_rsrc(128000)
            if not d: break
            ofp.write(d)
        ofp.close()

ifp.close()

${this.title}

Code Editor : binhex.py