Полезная информация


NAME

OS2::ExtAttr - Perl access to extended attributes.


SYNOPSIS

  use OS2::ExtAttr;
  tie %ea, 'OS2::ExtAttr', 'my.file';
  print $ea{eaname};
  $ea{myfield} = 'value';
  
  untie %ea;


DESCRIPTION

The package provides low-level and high-level interface to Extended Attributes under OS/2.


High-level interface: tie

The only argument of tie() is a file name, or an open file handle.

Note that all the changes of the tied hash happen in core, to propagate it to disk the tied hash should be untie()ed or should go out of scope. Alternatively, one may use the low-level update method on the corresponding object. Example:

  tied(%hash)->update;

Note also that setting/getting EA flag is not supported by the high-level interface, one should use the low-level interface instead. To use it on a tied hash one needs undocumented way to find eas give the tied hash.


Low-level interface

Two low-level methods are supported by the objects: copy() and update(). The copy() takes one argument: the name of a file to copy the attributes to, or an opened file handle. update() takes no arguments, and is discussed above.

Three convenience functions are provided:

  value($eas, $key)
  add($eas, $key, $value [, $flag])
  replace($eas, $key, $value [, $flag])

The default value for flag is 0.

In addition, all the _ea_* and _ead_* functions defined in EMX library are supported, with leading _ea/_ead stripped.


AUTHOR

Ilya Zakharevich, ilya@math.ohio-state.edu


SEE ALSO

perl(1).


DISCLAIMER

We are painfully aware that these documents may contain incorrect links and misformatted HTML. Such bugs lie in the automatic translation process that automatically created the hundreds and hundreds of separate documents that you find here. Please do not report link or formatting bugs, because we cannot fix per-document problems. The only bug reports that will help us are those that supply working patches to the installhtml or pod2html programs, or to the Pod::HTML module itself, for which I and the entire Perl community will shower you with thanks and praises.

If rather than formatting bugs, you encounter substantive content errors in these documents, such as mistakes in the explanations or code, please use the perlbug utility included with the Perl distribution.

--Tom Christiansen, Perl Documentation Compiler and Editor


Return to the Perl Documentation Index.
Return to the Perl Home Page.