Aug 30th, 2005, 6:11 PM
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#11
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Programmer
Join Date: Jul 2005
Posts: 62
Rep Power: 4 
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Quote:
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Originally Posted by Cerulean
Gzip does a good job of getting text files waay down. You can then pad the data up to 400. Should be pretty easy.
Here's a template you can use when you code it in C++ - it's written in Python (solely because I got curious).
import zlib
def make400Bytes(s):
assert len(s) > 400
compressed = zlib.compress(s)
if len(compressed) > 400:
print "Ouch, data size compression problem. Dataset too big, or bad data"
return None
compressed = compressed + "#" * (400 - len(compressed))
return compressed
def make600Bytes(s):
return zlib.decompress(s.rstrip("#"))
before = """Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Integer at purus. Aliquam posuere nibh. Vestibulum vitae turpis non arcu venenatis luctus. Sed at nisi. Aliquam erat volutpat. Sed urna. Quisque sit amet arcu eu tellus luctus mollis. Phasellus rhoncus vulputate sem. Nunc lacinia nibh. Ut fermentum augue nec odio. Duis fringilla tincidunt elit.
Mauris urna metus, placerat vitae, porttitor non, scelerisque et, libero. Donec nibh quam, mollis eget, placerat quis, sollicitudin in, magna. Nullam non urna. Vestibulum metus arcu, condimentum pellentesque, porttitor in, tempus ac, erat. Pelle"""
print "len(before) =", len(before) # 600
after = make400Bytes(before)
print "len(after) =", len(after) # down to 400
afterAfter = make600Bytes(after)
print "len(afterAfter) =", len(afterAfter) # back up to 600 I'm not sure, but I don't think the C zlib library is simple as the standard-library Python one with a "compress" and "decompress" function pair. If so, it should be quite easily to translate. |
Hate to say this but I'm using javascript 
I'll be sure to look at it though and see if I can apply it to JS.  |
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