lzh.htm

来自「刚刚看到本站有Visual C++数字图象处理（人民邮电出版社）的电子书」· HTM 代码 · 共 58 行

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<pre><font size="6" color="#0000ff">lzh format</font></pre>

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the lharc/lha archiver is a multi platform archiver made by haruyasu yoshizaki,

which has a relatively good compression. it uses more or less the same

technology like the zip programs by phil katz. there was a hack named &quot;ice&quot;,

which had only the graphic characters displayed on decompression changed.</pre>

    <pre>offset              count type   description

0000h                   1 byte   size of archived file header

0001h                   1 byte   checksum of remaining bytes

0002h                   3 char   id='-lh'

                                 id='-lz'

0005h                   1 char   compression methods used (see table 0005)

0006h                   1 char   id='-'

0007h                   1 dword  compressed size

000bh                   1 dword  uncompressed size

000fh                   1 dword  original file date/time (see table 0009)

0013h                   1 word   file attribute

0015h                   1 byte   filename / path length in bytes

                                 =&quot;len&quot;

0016h               &quot;len&quot; char   filename / path

0018h                   1 word   crc-16 of original file

+&quot;len&quot;</pre>

    <pre>(table 0005)

lharc compression types

  &quot;0&quot; - no compression

  &quot;1&quot; - lzw, 4k buffer, huffman for upper 6 bits of position

  &quot;2&quot; - unknown

  &quot;3&quot; - unknown

  &quot;4&quot; - lzw, arithmetic encoding

  &quot;5&quot; - lzw, arithmetic encoding

  &quot;s&quot; - lha 2.x archive?

  &quot;\&quot; - lha 2.x archive?

  &quot;d&quot; - lha 2.x archive?</pre>

    <pre>extension:lzh,ice

occurences:pc

programs:lharc.exe, lha.exe</pre>

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