this is why you always commit your code

This commit is contained in:
Conor Horan-Kates 2018-05-22 22:01:16 -07:00
parent 2f46c5cf59
commit 65655ddedd

66
revolabs-flx_uc_1000/readbin.rb Executable file
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#!/usr/bin/env ruby
## readbin.rb - given offsets, read binary files out of a packed file
file = ARGV.pop || 'FLX-UC-1500-2-6-0-294.bundle'
outdir = ARGV.last || sprintf('rb-out_%s.%s', file, Time.now.to_i)
files = Hash.new
offset_map = {
'FLX-UC-1500-2-6-0-294.bundle' => [ 0, 138364, 266272, 283460, 1708064, 19642065, File.size('FLX-UC-1500-2-6-0-294.bundle') ]
}
unless File.file?(file)
puts sprintf('unable to read[%s]', file)
exit 1
end
unless File.directory?(outdir)
puts sprintf('creating[%s]', outdir)
Dir.mkdir(outdir)
end
#offsets = [ 0, 138364, 266272, 283460, 1708064, 19642065, File.size(file) ]
offsets = offset_map[file]
# read in the file in segments, stuff in a hash
open(file, 'rb') do |f|
offsets.each_with_index do |offset, i|
forward = offsets[i+1]
backward = offsets[i-1]
break if forward.nil? # we're at the end of the file
length = (offset - forward).abs
puts sprintf('offset[%s] at[%s] reading[%s]..', i, offsets[i], length)
f.seek(offset)
s = f.read(length)
files[offset] = {
:i => i,
:contents => s,
}
puts sprintf(' got[%s]', s.size)
end
end
# write out each of the files
files.each_pair do |offset, hash|
hex = sprintf('0x%s', sprintf('%x', offset).upcase)
name = sprintf('%s/%s.%s.out', outdir, hash[:i], hex)
puts sprintf('writing[%s]', name)
open(name, 'wb') do |f|
f.write(hash[:contents])
end
puts sprintf(' size[%s]', File.size?(name))
end