mirror of
https://github.com/Zeckmathederg/glfs.git
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335 lines
11 KiB
XML
335 lines
11 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY unzip-download-http "&sourceforge-dl;/infozip/unzip60.tar.gz">
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<!ENTITY unzip-download-ftp " ">
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<!ENTITY unzip-md5sum "62b490407489521db863b523a7f86375">
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<!ENTITY unzip-size "1.3 MB">
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<!ENTITY unzip-buildsize "9 MB">
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<!ENTITY unzip-time "less than 0.1 SBU">
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]>
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<sect1 id="unzip" xreflabel="UnZip-&unzip-version;">
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<?dbhtml filename="unzip.html"?>
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<title>UnZip-&unzip-version;</title>
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<indexterm zone="unzip">
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<primary sortas="a-UnZip">UnZip</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to UnZip</title>
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<para>
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The <application>UnZip</application> package contains
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<filename>ZIP</filename> extraction utilities. These are useful for
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extracting files from <filename>ZIP</filename> archives.
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<filename>ZIP</filename> archives are created with
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<application>PKZIP</application> or <application>Info-ZIP</application>
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utilities, primarily in a DOS environment.
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</para>
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&lfs120_checked;
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<caution>
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<para>
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The previous version of the <application>UnZip</application>
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package had some locale related issues. Currently there are no BLFS
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editors capable of testing these locale issues. Therefore, the
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locale related information is left on this page, but has not been
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tested. A more general discussion of these problems can be found in
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the <xref linkend="locale-assumed-encoding"/> section of the <xref
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linkend="locale-issues"/> page.
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</para>
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</caution>
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>
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Download (HTTP): <ulink url="&unzip-download-http;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download (FTP): <ulink url="&unzip-download-ftp;"/>
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</para>
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</listitem>
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<listitem>
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<para>
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Download MD5 sum: &unzip-md5sum;
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</para>
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</listitem>
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<listitem>
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<para>
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Download size: &unzip-size;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated disk space required: &unzip-buildsize;
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</para>
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</listitem>
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<listitem>
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<para>
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Estimated build time: &unzip-time;
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</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">Additional Downloads</bridgehead>
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<itemizedlist spacing='compact'>
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<listitem>
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<para>
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Required patch: <ulink
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url="&patch-root;/unzip-&unzip-version;-consolidated_fixes-1.patch"/>
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</para>
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</listitem>
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</itemizedlist>
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</sect2>
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<sect2 id="unzip-locale-issues">
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<title>UnZip Locale Issues</title>
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<note>
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<para>
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Use of <application>UnZip</application> in the
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<application>JDK</application>, <application>Mozilla</application>,
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<application>DocBook</application> or any other BLFS package
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installation is not a problem, as BLFS instructions never use
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<application>UnZip</application> to extract a file with non-ASCII
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characters in the file's name.
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</para>
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</note>
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<para>
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These issues are thought to be fixed in the patch. But since none
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of the editors have data to test this, the following workarounds are
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retained in case they might still be needed.
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</para>
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<para>
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The <application>UnZip</application> package assumes that filenames
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stored in the ZIP archives created on non-Unix systems are encoded in
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CP850, and that they should be converted to ISO-8859-1 when writing files
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onto the filesystem. Such assumptions are not always valid. In fact,
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inside the ZIP archive, filenames are encoded in the DOS codepage that is
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in use in the relevant country, and the filenames on disk should be in
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the locale encoding. In MS Windows, the OemToChar() C function (from
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<filename>User32.DLL</filename>) does the correct conversion (which is
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indeed the conversion from CP850 to a superset of ISO-8859-1 if MS
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Windows is set up to use the US English language), but there is no
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equivalent in Linux.
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</para>
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<para>
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When using <command>unzip</command> to unpack a ZIP archive
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containing non-ASCII filenames, the filenames are damaged because
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<command>unzip</command> uses improper conversion when any of its
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encoding assumptions are incorrect. For example, in the ru_RU.KOI8-R
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locale, conversion of filenames from CP866 to KOI8-R is required, but
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conversion from CP850 to ISO-8859-1 is done, which produces filenames
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consisting of undecipherable characters instead of words (the closest
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equivalent understandable example for English-only users is rot13). There
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are several ways around this limitation:
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</para>
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<para>
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1) For unpacking ZIP archives with filenames containing non-ASCII
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characters, use <ulink url="https://www.winzip.com/">WinZip</ulink> while
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running the <ulink url="https://www.winehq.org/">Wine</ulink> Windows
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emulator.
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</para>
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<para>
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2) Use <command>bsdtar -xf</command> from
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<xref role="nodep" linkend="libarchive"/> to unpack the ZIP archive.
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Then fix the damage made to
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the filenames using the <command>convmv</command> tool
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(<ulink url="https://j3e.de/linux/convmv/"/>). The following is an example
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for the zh_CN.UTF-8 locale:
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</para>
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<screen><userinput>convmv -f cp936 -t utf-8 -r --nosmart --notest \
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<replaceable></path/to/unzipped/files></replaceable></userinput></screen>
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<!--
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<para>
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3) Apply the optional
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<filename>unzip-5.50-alt-iconv-v1.1.patch</filename> patch to
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<application>UnZip</application>. It will apply with some offsets.
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</para>
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<para>
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It allows to specify the assumed filename encoding in the ZIP
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archive using the <option>-O charset_name</option> option and the
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on-disk filename encoding using the <option>-I charset_name</option>
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option. Defaults: the on-disk filename encoding is the locale encoding,
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the encoding inside the ZIP archive is guessed according to the builtin
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table based on the locale encoding. For US English users, this still
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means that unzip converts from CP850 to ISO-8859-1 by default.
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</para>
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<para>
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Caveat: this method works only with 8-bit locale encodings, not
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with UTF-8. Attempting to use a patched <command>unzip</command> in UTF-8
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locales may result in a segmentation fault and is probably a security
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risk.
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</para>
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-->
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</sect2>
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<sect2 role="installation">
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<title>Installation of UnZip</title>
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<para>
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First apply the patch:
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</para>
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<screen><userinput remap="pre">patch -Np1 -i ../unzip-&unzip-version;-consolidated_fixes-1.patch</userinput></screen>
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<para>
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Now compile the package:
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</para>
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<screen><userinput>make -f unix/Makefile generic</userinput></screen>
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<para>
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The test suite does not work for target <quote>generic</quote>.
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</para>
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<para>
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Now, as the <systemitem class="username">root</systemitem> user:
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</para>
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<screen role="root"><userinput>make prefix=/usr MANDIR=/usr/share/man/man1 \
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-f unix/Makefile install</userinput></screen>
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para>
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<command>make -f unix/Makefile generic</command>:
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This target begins by running a configure script (unlike the older
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targets such as linux and linux_noasm) which creates a flags file that
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is then used in the build. This ensures that the 32-bit x86 build
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receives the right flags to unzip files which are larger than 2GB
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when extracted.
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</para>
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Programs</segtitle>
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<segtitle>Installed Libraries</segtitle>
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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>funzip, unzip, unzipfsx, zipgrep, and zipinfo</seg>
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<seg>None</seg>
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<seg>None</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="funzip">
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<term><command>funzip</command></term>
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<listitem>
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<para>
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allows the output of <command>unzip</command> commands to be
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redirected
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</para>
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<indexterm zone="unzip funzip">
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<primary sortas="b-funzip">funzip</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="unzip-prog">
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<term><command>unzip</command></term>
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<listitem>
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<para>
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lists, tests or extracts files from a <filename>ZIP</filename>
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archive
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</para>
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<indexterm zone="unzip unzip-prog">
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<primary sortas="b-unzip">unzip</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="unzipfsx">
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<term><command>unzipfsx</command></term>
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<listitem>
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<para>
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is a self-extracting stub that can be prepended to a
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<filename>ZIP</filename> archive. Files in this format allow the
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recipient to decompress the archive without installing
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<application>UnZip</application>
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</para>
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<indexterm zone="unzip unzipfsx">
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<primary sortas="b-unzipfsx">unzipfsx</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="zipgrep">
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<term><command>zipgrep</command></term>
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<listitem>
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<para>
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searches files in a <filename>ZIP</filename> archive for
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lines matching a pattern
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</para>
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<indexterm zone="unzip zipgrep">
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<primary sortas="b-zipgrep">zipgrep</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="zipinfo">
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<term><command>zipinfo</command></term>
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<listitem>
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<para>
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produces technical information about the files in a
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<filename>ZIP</filename> archive, including file access permissions,
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encryption status, type of compression, etc
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</para>
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<indexterm zone="unzip zipinfo">
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<primary sortas="b-zipinfo">zipinfo</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<!--
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<varlistentry id="libunzip">
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<term><filename class='libraryfile'>libunzip.so</filename></term>
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<listitem>
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<para>
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contains the API functions required by the
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<application>UnZip</application> programs.
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</para>
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<indexterm zone="unzip libunzip">
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<primary sortas="c-libunzip">libunzip.so</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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-->
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</variablelist>
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</sect2>
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</sect1>
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