1 files changed, 0 insertions, 134 deletions
diff --git a/Demo/zlib/minigzip.py b/Demo/zlib/minigzip.py
deleted file mode 100755
index b57de73..0000000
--- a/Demo/zlib/minigzip.py
+++ /dev/null
@@ -1,134 +0,0 @@
-#!/usr/bin/env python3
-# Demo program for zlib; it compresses or decompresses files, but *doesn't*
-# delete the original.  This doesn't support all of gzip's options.
-#
-# The 'gzip' module in the standard library provides a more complete
-# implementation of gzip-format files.
-
-import zlib, sys, os
-
-FTEXT, FHCRC, FEXTRA, FNAME, FCOMMENT = 1, 2, 4, 8, 16
-
-def write32(output, value):
-    output.write(bytes([value & 255])) ; value=value // 256
-    output.write(bytes([value & 255])) ; value=value // 256
-    output.write(bytes([value & 255])) ; value=value // 256
-    output.write(bytes([value & 255]))
-
-def read32(input):
-    v = ord(input.read(1))
-    v += (ord(input.read(1)) << 8 )
-    v += (ord(input.read(1)) << 16)
-    v += (ord(input.read(1)) << 24)
-    return v
-
-def compress(filename, input, output):
-    output.write(b'\037\213\010')        # Write the header, ...
-    output.write(bytes([FNAME]))         # ... flag byte ...
-
-    statval = os.stat(filename)          # ... modification time ...
-    mtime = statval[8]
-    write32(output, mtime)
-    output.write(b'\002')                # ... slowest compression alg. ...
-    output.write(b'\377')                # ... OS (=unknown) ...
-    bfilename = os.fsencode(filename)
-    output.write(bfilename + b'\000')    # ... original filename ...
-
-    crcval = zlib.crc32(b'')
-    compobj = zlib.compressobj(9, zlib.DEFLATED, -zlib.MAX_WBITS,
-                             zlib.DEF_MEM_LEVEL, 0)
-    while True:
-        data = input.read(1024)
-        if data == b'':
-            break
-        crcval = zlib.crc32(data, crcval)
-        output.write(compobj.compress(data))
-    output.write(compobj.flush())
-    write32(output, crcval)             # ... the CRC ...
-    write32(output, statval[6])         # and the file size.
-
-def decompress(input, output):
-    magic = input.read(2)
-    if magic != b'\037\213':
-        print('Not a gzipped file')
-        sys.exit(0)
-    if ord(input.read(1)) != 8:
-        print('Unknown compression method')
-        sys.exit(0)
-    flag = ord(input.read(1))
-    input.read(4+1+1)                   # Discard modification time,
-                                        # extra flags, and OS byte.
-    if flag & FEXTRA:
-        # Read & discard the extra field, if present
-        xlen = ord(input.read(1))
-        xlen += 256*ord(input.read(1))
-        input.read(xlen)
-    if flag & FNAME:
-        # Read and discard a null-terminated string containing the filename
-        while True:
-            s = input.read(1)
-            if s == b'\0': break
-    if flag & FCOMMENT:
-        # Read and discard a null-terminated string containing a comment
-        while True:
-            s = input.read(1)
-            if s == b'\0': break
-    if flag & FHCRC:
-        input.read(2)                   # Read & discard the 16-bit header CRC
-
-    decompobj = zlib.decompressobj(-zlib.MAX_WBITS)
-    crcval = zlib.crc32(b'')
-    length = 0
-    while True:
-        data = input.read(1024)
-        if data == b"":
-            break
-        decompdata = decompobj.decompress(data)
-        output.write(decompdata)
-        length += len(decompdata)
-        crcval = zlib.crc32(decompdata, crcval)
-
-    decompdata = decompobj.flush()
-    output.write(decompdata)
-    length += len(decompdata)
-    crcval = zlib.crc32(decompdata, crcval)
-
-    # We've read to the end of the file, so we have to rewind in order
-    # to reread the 8 bytes containing the CRC and the file size.  The
-    # decompressor is smart and knows when to stop, so feeding it
-    # extra data is harmless.
-    input.seek(-8, 2)
-    crc32 = read32(input)
-    isize = read32(input)
-    if crc32 != crcval:
-        print('CRC check failed.')
-    if isize != length:
-        print('Incorrect length of data produced')
-
-def main():
-    if len(sys.argv)!=2:
-        print('Usage: minigzip.py <filename>')
-        print('  The file will be compressed or decompressed.')
-        sys.exit(0)
-
-    filename = sys.argv[1]
-    if filename.endswith('.gz'):
-        compressing = False
-        outputname = filename[:-3]
-    else:
-        compressing = True
-        outputname = filename + '.gz'
-
-    input = open(filename, 'rb')
-    output = open(outputname, 'wb')
-
-    if compressing:
-        compress(filename, input, output)
-    else:
-        decompress(input, output)
-
-    input.close()
-    output.close()
-
-if __name__ == '__main__':
-    main()