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#!/usr/bin/env vpython3
# *-* coding: utf-8 *-*
import sys
def show(fname):
print('*' * 20, fname)
data = open(fname, 'rb').read()
s = data.find(b'xref')
while s > 0:
e = data.find(b'trailer', s) - 1
offsets = data[s:e].split(b'\n')
print(offsets)
if 1:
for offset in offsets[2:]:
offset = offset.split()
if len(offset) != 3:
continue
offset = int(offset[0], 10)
sdata = data[offset:offset + 32].split(b'\n')[0]
print(offset, '->', sdata)
s = data.find(b'%%EOF', e)
print('%%EOF at', s)
s = data.find(b'xref', s)
s = data.find(b'/ByteRange')
if s > 0:
start = data.find(b'[', s) + 1
end = data.find(b']', s)
byterange = [int(i, 10) for i in data[start:end].split()]
print('/ByteRange', ':', s, start, end, ':', byterange)
print('/Contents', ':', chr(data[byterange[1]]), '...', chr(data[byterange[2] - 1]))
def main():
show(sys.argv[1])
main()
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