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Merging upstream version 1.14~rc1.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
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Daniel Baumann 2025-02-21 11:11:34 +01:00
parent d318e73826
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GPG key ID: FBB4F0E80A80222F
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35
doc/lziprecover.texinfo
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@ -6,8 +6,8 @@
@finalout
@c %**end of header
@set UPDATED 24 February 2012
@set VERSION 1.13
@set UPDATED 27 February 2013
@set VERSION 1.14-rc1
@dircategory Data Compression
@direntry
@ -44,7 +44,7 @@ This manual is for Lziprecover (version @value{VERSION}, @value{UPDATED}).
@end menu
@sp 1
Copyright @copyright{} 2009, 2010, 2011, 2012 Antonio Diaz Diaz.
Copyright @copyright{} 2009, 2010, 2011, 2012, 2013 Antonio Diaz Diaz.
This manual is free documentation: you have unlimited permission
to copy, distribute and modify it.
@ -155,7 +155,9 @@ Keep (don't delete) input files during decompression.
@item -l
@itemx --list
Print total file sizes and ratios. The values produced are correct even
for multi-member files.
for multi-member files. Use it together with @samp{-v} to see
information about the members in the file.
@item -m
@itemx --merge
@ -245,6 +247,11 @@ Table of SI and binary prefixes (unit multipliers):
@chapter File Format
@cindex file format
Perfection is reached, not when there is no longer anything to add, but
when there is no longer anything to take away.@*
--- Antoine de Saint-Exupery
@sp 1
In the diagram below, a box like this:
@verbatim
+---+
@ -280,15 +287,16 @@ All multibyte values are stored in little endian order.
A four byte string, identifying the lzip format, with the value "LZIP".
@item VN (version number, 1 byte)
Just in case something needs to be modified in the future. Valid values
are 0 and 1. Version 0 files are deprecated. They can contain only one
member and lack the @samp{Member size} field.
Just in case something needs to be modified in the future. 1 for now.
@item DS (coded dictionary size, 1 byte)
Bits 4-0 contain the base 2 logarithm of the base dictionary size.@*
Bits 7-5 contain the number of "wedges" to substract from the base
dictionary size to obtain the dictionary size. The size of a wedge is
(base dictionary size / 16).@*
Lzip divides the distance between any two powers of 2 into 8 equally
spaced intervals, named "wedges". The dictionary size is calculated by
taking a power of 2 (the base size) and substracting from it a number of
wedges between 0 and 7. The size of a wedge is (base_size / 16).@*
Bits 4-0 contain the base 2 logarithm of the base size (12 to 29).@*
Bits 7-5 contain the number of wedges (0 to 7) to substract from the
base size to obtain the dictionary size.@*
Valid values for dictionary size range from 4KiB to 512MiB.
@item Lzma stream
@ -302,8 +310,9 @@ CRC of the uncompressed original data.
Size of the uncompressed original data.
@item Member size (8 bytes)
Total size of the member, including header and trailer. This facilitates
safe recovery of undamaged members from multi-member files.
Total size of the member, including header and trailer. This field acts
as a distributed index, and facilitates safe recovery of undamaged
members from multi-member files.
@end table