siriusfox/pnger
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Added support for unpng

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ej 2013-09-03 21:04:32 -04:00
parent 409dcfac31
commit e4d2cb3ea0
2 changed files with 28 additions and 4 deletions
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11
README.md
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@ -1 +1,10 @@
hello how are you doing toda
```bash
e ~/Desktop/projects/pnger :) shasum README.md
96313bbb41092391c6df854d0bf6c9b7e1fe71fd README.md
e ~/Desktop/projects/pnger :) python pnger.py -i README.md -o testing.png
e ~/Desktop/projects/pnger :) python pnger.py -i testing.png -o test.txt -u
e ~/Desktop/projects/pnger :) shasum test.txt
96313bbb41092391c6df854d0bf6c9b7e1fe71fd test.txt
e ~/Desktop/projects/pnger :)
```

17
pnger.py
View file

@ -10,16 +10,31 @@
import sys import sys
import argparse import argparse
def pngit(infile, outfile):
def pngit(infile, outfile, nowrite=0):
outcounter = 0
with open(outfile, "wb") as theoutf: with open(outfile, "wb") as theoutf:
if nowrite == 0:
theoutf.write("\x89\x50\x4E\x47\x0D\x0A\x1A\x0A") theoutf.write("\x89\x50\x4E\x47\x0D\x0A\x1A\x0A")
with open(infile, "rb") as f: with open(infile, "rb") as f:
byte = f.read(1) byte = f.read(1)
while byte != "": while byte != "":
if outcounter >= nowrite:
theoutf.write(byte) theoutf.write(byte)
else:
outcounter+=1
byte = f.read(1) byte = f.read(1)
def unpngit(infile, outfile):
pngit(infile, outfile, 8)
if __name__ == '__main__': if __name__ == '__main__':
parser = argparse.ArgumentParser(description='Process some integers.') parser = argparse.ArgumentParser(description='Process some integers.')
parser.add_argument('-i', '--input', help='the input file you want to perform a png or unpng operation on.') parser.add_argument('-i', '--input', help='the input file you want to perform a png or unpng operation on.')