diff options
Diffstat (limited to 'Demo/zlib/minigzip.py')
| -rwxr-xr-x | Demo/zlib/minigzip.py | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/Demo/zlib/minigzip.py b/Demo/zlib/minigzip.py index dc99d9bc88e..e2801de3bee 100755 --- a/Demo/zlib/minigzip.py +++ b/Demo/zlib/minigzip.py @@ -9,7 +9,7 @@ def write32(output, value): output.write(chr(value & 255)) ; value=value / 256 output.write(chr(value & 255)) ; value=value / 256 output.write(chr(value & 255)) - + def read32(input): v=ord(input.read(1)) v=v+ (ord(input.read(1))<<8 ) @@ -19,9 +19,9 @@ def read32(input): import zlib, sys if len(sys.argv)!=2: - print 'Usage: minigzip.py <filename>' - print ' The file will be compressed or decompressed.' - sys.exit(0) + print 'Usage: minigzip.py <filename>' + print ' The file will be compressed or decompressed.' + sys.exit(0) filename=sys.argv[1] compressing=1 ; outputname=filename+'.gz' @@ -64,7 +64,7 @@ else: # extra flags, and OS byte. if flag & FEXTRA: # Read & discard the extra field, if present - xlen=ord(input.read(1)) + xlen=ord(input.read(1)) xlen=xlen+256*ord(input.read(1)) input.read(xlen) if flag & FNAME: @@ -92,11 +92,11 @@ else: decompdata=decompobj.flush() output.write(decompdata) ; length=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. + # extra data is harmless. input.seek(-8, 2) crc32=read32(input) isize=read32(input) @@ -104,4 +104,3 @@ else: if isize!=length: print 'Incorrect length of data produced' input.close() ; output.close() - |