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Archive::Tar::File(3pm)               Perl Programmers Reference Guide               Archive::Tar::File(3pm)



NAME
       Archive::Tar::File - a subclass for in-memory extracted file from Archive::Tar

SYNOPSIS
           my @items = $tar->get_files;

           print $_->name, ' ', $_->size, "\n" for @items;

           print $object->get_content;
           $object->replace_content('new content');

           $object->rename( 'new/full/path/to/file.c' );

DESCRIPTION
       Archive::Tar::Files provides a neat little object layer for in-memory extracted files. It's mostly
       used internally in Archive::Tar to tidy up the code, but there's no reason users shouldn't use this
       API as well.

   Accessors
       A lot of the methods in this package are accessors to the various fields in the tar header:

       name
           The file's name

       mode
           The file's mode

       uid The user id owning the file

       gid The group id owning the file

       size
           File size in bytes

       mtime
           Modification time. Adjusted to mac-time on MacOS if required

       chksum
           Checksum field for the tar header

       type
           File type -- numeric, but comparable to exported constants -- see Archive::Tar's documentation

       linkname
           If the file is a symlink, the file it's pointing to

       magic
           Tar magic string -- not useful for most users

       version
           Tar version string -- not useful for most users

       uname
           The user name that owns the file

       gname
           The group name that owns the file

       devmajor
           Device major number in case of a special file

       devminor
           Device minor number in case of a special file

       prefix
           Any directory to prefix to the extraction path, if any

       raw Raw tar header -- not useful for most users

Methods
   Archive::Tar::File->new( file => $path )
       Returns a new Archive::Tar::File object from an existing file.

       Returns undef on failure.

   Archive::Tar::File->new( data => $path, $data, $opt )
       Returns a new Archive::Tar::File object from data.

       $path defines the file name (which need not exist), $data the file contents, and $opt is a reference
       to a hash of attributes which may be used to override the default attributes (fields in the tar
       header), which are described above in the Accessors section.

       Returns undef on failure.

   Archive::Tar::File->new( chunk => $chunk )
       Returns a new Archive::Tar::File object from a raw 512-byte tar archive chunk.

       Returns undef on failure.

   $bool = $file->extract( [ $alternative_name ] )
       Extract this object, optionally to an alternative name.

       See "Archive::Tar->extract_file" for details.

       Returns true on success and false on failure.

   $path = $file->full_path
       Returns the full path from the tar header; this is basically a concatenation of the "prefix" and
       "name" fields.

   $bool = $file->validate
       Done by Archive::Tar internally when reading the tar file: validate the header against the checksum
       to ensure integer tar file.

       Returns true on success, false on failure

   $bool = $file->has_content
       Returns a boolean to indicate whether the current object has content.  Some special files like
       directories and so on never will have any content. This method is mainly to make sure you don't get
       warnings for using uninitialized values when looking at an object's content.

   $content = $file->get_content
       Returns the current content for the in-memory file

   $cref = $file->get_content_by_ref
       Returns the current content for the in-memory file as a scalar reference. Normal users won't need
       this, but it will save memory if you are dealing with very large data files in your tar archive,
       since it will pass the contents by reference, rather than make a copy of it first.

   $bool = $file->replace_content( $content )
       Replace the current content of the file with the new content. This only affects the in-memory
       archive, not the on-disk version until you write it.

       Returns true on success, false on failure.

   $bool = $file->rename( $new_name )
       Rename the current file to $new_name.

       Note that you must specify a Unix path for $new_name, since per tar standard, all files in the
       archive must be Unix paths.

       Returns true on success and false on failure.

   $bool = $file->chmod $mode)
       Change mode of $file to $mode. The mode can be a string or a number which is interpreted as octal
       whether or not a leading 0 is given.

       Returns true on success and false on failure.

   $bool = $file->chown( $user [, $group])
       Change owner of $file to $user. If a $group is given that is changed as well. You can also pass a
       single parameter with a colon separating the use and group as in 'root:wheel'.

       Returns true on success and false on failure.

Convenience methods
       To quickly check the type of a "Archive::Tar::File" object, you can use the following methods:

       $file->is_file
           Returns true if the file is of type "file"

       $file->is_dir
           Returns true if the file is of type "dir"

       $file->is_hardlink
           Returns true if the file is of type "hardlink"

       $file->is_symlink
           Returns true if the file is of type "symlink"

       $file->is_chardev
           Returns true if the file is of type "chardev"

       $file->is_blockdev
           Returns true if the file is of type "blockdev"

       $file->is_fifo
           Returns true if the file is of type "fifo"

       $file->is_socket
           Returns true if the file is of type "socket"

       $file->is_longlink
           Returns true if the file is of type "LongLink".  Should not happen after a successful "read".

       $file->is_label
           Returns true if the file is of type "Label".  Should not happen after a successful "read".

       $file->is_unknown
           Returns true if the file type is "unknown"



perl v5.16.2                                     2012-10-25                          Archive::Tar::File(3pm)