91 lines
2.8 KiB
Ruby
91 lines
2.8 KiB
Ruby
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require 'rubygems'
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gem 'bindata', '~> 1.2.1'
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require 'bindata'
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module XtmFile
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#
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# Offset | Information | Size (bytes)
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# --------------------------------------------
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# 0 | Software name length | 1
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# 1 | Software name | 20
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# 21 | Version length | 1
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# 22 | Version | 4
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# 26 | Not used | 10
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# 36 | Date | 4
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# 40 | Filename length | 1
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# 41 | Filename | 50
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# 91 | MD5 Enable | 1
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# 92 | File parts count | 4
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# 96 | Original file size | 8
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#
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class Header < BinData::Record
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endian :little
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uint8 :progname_len, :value => lambda { progname_str.length }
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string :progname_str, :length => 20
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uint8 :version_len, :value => lambda { version_str.length }
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string :version_str, :length => 4
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string :unused, :length => 10
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uint32le :date
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uint8 :filename_len
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string :filename_str, :read_length => :filename_len
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# fake padding
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string :filename_str_pad, :read_length => lambda { 50 - filename_len }
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uint8 :md5
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uint32 :filecount
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uint64 :filesize
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def to_full_string
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r = []
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r << "[%03d] Progname len : %s" % [self.progname_len.offset, self.progname_len]
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r << "[%03d] Progname str : %s" % [self.progname_str.offset, self.progname_str]
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r << "[%03d] Version len : %s" % [self.version_len.offset, self.version_len]
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r << "[%03d] Version str : %s" % [self.version_str.offset, self.version_str]
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r << "[%03d] Unused : %s" % [self.unused.offset, self.unused]
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r << "[%03d] Date : %s" % [self.date.offset, self.date]
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r << "[%03d] Filename len : %s" % [self.filename_len.offset, self.filename_len]
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r << "[%03d] Filename str : %s" % [self.filename_str.offset, self.filename_str]
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r << "[%03d] md5 : %s" % [self.md5.offset, self.md5]
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r << "[%03d] Filecount : %d" % [self.filecount.offset, self.filecount]
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r << "[%03d] Filesize : %s" % [self.filesize.offset, self.filesize]
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return r.join("\n")
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end
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def to_summary_string
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r = []
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r << " Software : %s (%s)" % [self.progname_str,self.version_str]
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r << " Date : %s" % self.date
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r << "Filename str : %s" % self.filename_str
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r << " md5 : %s" % ( self.md5 ? 'enabled' : 'disabled' )
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r << " Filecount : %d" % self.filecount
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r << " Filesize : %s" % _readable_file_size( self.filesize, 2 )
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return r.join("\n")
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end
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private
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GIGA_SIZE = 1073741824.0
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MEGA_SIZE = 1048576.0
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KILO_SIZE = 1024.0
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def _readable_file_size size, precision
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case
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when size == 1 : "1 Byte"
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when size < KILO_SIZE : "%d Bytes" % size
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when size < MEGA_SIZE : "%.#{precision}f KB" % (size / KILO_SIZE)
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when size < GIGA_SIZE : "%.#{precision}f MB" % (size / MEGA_SIZE)
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else "%.#{precision}f GB" % (size / GIGA_SIZE)
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end
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end
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end
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end
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