File::Spec::VMS(3) Perl Programmers Reference Guide File::Spec::VMS(3)NAMEFile::Spec::VMS - methods for VMS file specs
SYNOPSIS
require File::Spec::VMS; # Done internally by File::Spec if needed
DESCRIPTION
See File::Spec::Unix for a documentation of the methods provided there.
This package overrides the implementation of these methods, not the
semantics.
The mode of operation of these routines depend on the VMS features that
are controlled by the DECC features "DECC$FILENAME_REPORT_UNIX" and
"DECC$EFS_CHARSET".
Perl needs to be at least at 5.10 for these feature settings to work.
Use of them on older perl versions on VMS will result in unpredictable
operations.
The default and traditional mode of these routines have been to expect
VMS syntax on input and to return VMS syntax on output, even when Unix
syntax was given on input.
The default and traditional mode is also incompatible with the VMS
"EFS", Extended File system character set, and with running Perl
scripts under <GNV>, Gnu is not VMS, an optional Unix like runtime
environment on VMS.
If the "DECC$EFS_CHARSET" feature is enabled, These routines will now
accept either VMS or UNIX syntax. If the input parameters are clearly
VMS syntax, the return value will be in VMS syntax. If the input
parameters are clearly in Unix syntax, the output will be in Unix
syntax.
This corresponds to the way that the VMS C library routines have always
handled filenames, and what a programmer who has not specifically read
this pod before would also expect.
If the "DECC$FILENAME_REPORT_UNIX" feature is enabled, then if the
output syntax can not be determined from the input syntax, the output
syntax will be UNIX. If the feature is not enabled, VMS output will be
the default.
canonpath (override)
Removes redundant portions of file specifications according to the
syntax detected.
catdir (override)
Concatenates a list of file specifications, and returns the result
as a directory specification. No check is made for "impossible"
cases (e.g. elements other than the first being absolute
filespecs).
catfile (override)
Concatenates a list of directory specifications with a filename
specification to build a path.
curdir (override)
Returns a string representation of the current directory: '[]' or
'.'
devnull (override)
Returns a string representation of the null device: '_NLA0:' or
'/dev/null'
rootdir (override)
Returns a string representation of the root directory:
'SYS$DISK:[000000]' or '/'
tmpdir (override)
Returns a string representation of the first writable directory
from the following list or '' if none are writable:
/tmp if C<DECC$FILENAME_REPORT_UNIX> is enabled.
sys$scratch:
$ENV{TMPDIR}
Since perl 5.8.0, if running under taint mode, and if $ENV{TMPDIR}
is tainted, it is not used.
updir (override)
Returns a string representation of the parent directory: '[-]' or
'..'
case_tolerant (override)
VMS file specification syntax is case-tolerant.
path (override)
Translate logical name DCL$PATH as a searchlist, rather than trying
to "split" string value of $ENV{'PATH'}.
file_name_is_absolute (override)
Checks for VMS directory spec as well as Unix separators.
splitpath (override)
($volume,$directories,$file) = File::Spec->splitpath( $path );
($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file );
Passing a true value for $no_file indicates that the path being
split only contains directory components, even on systems where you
can usually (when not supporting a foreign syntax) tell the
difference between directories and files at a glance.
splitdir (override)
Split a directory specification into the components.
catpath (override)
Construct a complete filespec.
abs2rel (override)
Attempt to convert a file specification to a relative
specification. On a system with volumes, like VMS, this may not be
possible.
rel2abs (override)
Return an absolute file specification from a relative one.
COPYRIGHT
Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
SEE ALSO
See File::Spec and File::Spec::Unix. This package overrides the
implementation of these methods, not the semantics.
An explanation of VMS file specs can be found at
"/h71000.www7.hp.com/doc/731FINAL/4506/4506pro_014.html#apps_locating_naming_files""
in "http:.
perl v5.10.1 2009-05-11 File::Spec::VMS(3)