archive::extract.3

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

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.\" ========================================================================
.\"
.IX Title "Archive::Extract 3"
.TH Archive::Extract 3 "2007-12-18" "perl v5.10.0" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Archive::Extract \- A generic archive extracting mechanism
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&    use Archive::Extract;
\&
\&    ### build an Archive::Extract object ###
\&    my $ae = Archive::Extract\->new( archive => \*(Aqfoo.tgz\*(Aq );
\&
\&    ### extract to cwd() ###
\&    my $ok = $ae\->extract;
\&
\&    ### extract to /tmp ###
\&    my $ok = $ae\->extract( to => \*(Aq/tmp\*(Aq );
\&
\&    ### what if something went wrong?
\&    my $ok = $ae\->extract or die $ae\->error;
\&
\&    ### files from the archive ###
\&    my $files   = $ae\->files;
\&
\&    ### dir that was extracted to ###
\&    my $outdir  = $ae\->extract_path;
\&
\&
\&    ### quick check methods ###
\&    $ae\->is_tar     # is it a .tar file?
\&    $ae\->is_tgz     # is it a .tar.gz or .tgz file?
\&    $ae\->is_gz;     # is it a .gz file?
\&    $ae\->is_zip;    # is it a .zip file?
\&    $ae\->is_bz2;    # is it a .bz2 file?
\&    $ae\->is_tbz;    # is it a .tar.bz2 or .tbz file?
\&
\&    ### absolute path to the archive you provided ###
\&    $ae\->archive;
\&
\&    ### commandline tools, if found ###
\&    $ae\->bin_tar     # path to /bin/tar, if found
\&    $ae\->bin_gzip    # path to /bin/gzip, if found
\&    $ae\->bin_unzip   # path to /bin/unzip, if found
\&    $ae\->bin_bunzip2 # path to /bin/bunzip2 if found
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Archive::Extract is a generic archive extraction mechanism.
.PP
It allows you to extract any archive file of the type .tar, .tar.gz,
\&.gz, .Z, tar.bz2, .tbz, .bz2 or .zip without having to worry how it 
does so, or use different interfaces for each type by using either 
perl modules, or commandline tools on your system.
.PP
See the \f(CW\*(C`HOW IT WORKS\*(C'\fR section further down for details.
.SH "METHODS"
.IX Header "METHODS"
.ie n .Sh "$ae = Archive::Extract\->new(archive => '/path/to/archive',[type => \s-1TYPE\s0])"
.el .Sh "\f(CW$ae\fP = Archive::Extract\->new(archive => '/path/to/archive',[type => \s-1TYPE\s0])"
.IX Subsection "$ae = Archive::Extract->new(archive => '/path/to/archive',[type => TYPE])"
Creates a new \f(CW\*(C`Archive::Extract\*(C'\fR object based on the archive file you
passed it. Automatically determines the type of archive based on the
extension, but you can override that by explicitly providing the
\&\f(CW\*(C`type\*(C'\fR argument.
.PP
Valid values for \f(CW\*(C`type\*(C'\fR are:
.IP "tar" 4
.IX Item "tar"
Standard tar files, as produced by, for example, \f(CW\*(C`/bin/tar\*(C'\fR.
Corresponds to a \f(CW\*(C`.tar\*(C'\fR suffix.
.IP "tgz" 4
.IX Item "tgz"
Gzip compressed tar files, as produced by, for example \f(CW\*(C`/bin/tar \-z\*(C'\fR.
Corresponds to a \f(CW\*(C`.tgz\*(C'\fR or \f(CW\*(C`.tar.gz\*(C'\fR suffix.
.IP "gz" 4
.IX Item "gz"
Gzip compressed file, as produced by, for example \f(CW\*(C`/bin/gzip\*(C'\fR.
Corresponds to a \f(CW\*(C`.gz\*(C'\fR suffix.
.IP "Z" 4
.IX Item "Z"
Lempel-Ziv compressed file, as produced by, for example \f(CW\*(C`/bin/compress\*(C'\fR.
Corresponds to a \f(CW\*(C`.Z\*(C'\fR suffix.