Jesse Vincent
2010-05-18 16:38:00 UTC
In perl.git, the branch blead has been updated
<http://perl5.git.perl.org/perl.git/commitdiff/142c3795604e17a31bf6c9e74242f4d464918df6?hp=54e46954ab12982844ed64c0ec9c2ef9ff7fcdfb>
- Log -----------------------------------------------------------------
commit 142c3795604e17a31bf6c9e74242f4d464918df6
Author: Jesse Vincent <***@bestpractical.com>
Date: Tue May 18 12:17:24 2010 -0400
Actually note that Shell.pm is deprecated for 5.13 and 5.14, so we can
remove it in 5.15 in the Spring of 2011.
M cpan/Shell/Shell.pm
commit c9a0cae924d6331f0cc9997f1841d0544a2e5f63
Author: Jesse Vincent <***@bestpractical.com>
Date: Tue May 18 12:15:41 2010 -0400
Shell.pm was missing its deprecation warning in 5.12. So it can't be
removed in 5.14.
Revert "Remove Shell from the core distribution. Get it from CPAN now."
This reverts commit 28d302d426b73ed76fdcc816dd51bb1a8f93332b.
M MANIFEST
M Porting/Maintainers.pl
A cpan/Shell/Shell.pm
A cpan/Shell/t/Shell.t
-----------------------------------------------------------------------
Summary of changes:
MANIFEST | 2 +
Porting/Maintainers.pl | 11 ++
cpan/Shell/Shell.pm | 272 ++++++++++++++++++++++++++++++++++++++++++++++++
cpan/Shell/t/Shell.t | 65 ++++++++++++
4 files changed, 350 insertions(+), 0 deletions(-)
create mode 100644 cpan/Shell/Shell.pm
create mode 100644 cpan/Shell/t/Shell.t
diff --git a/MANIFEST b/MANIFEST
index 3963c22..828714c 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -2019,6 +2019,8 @@ cpan/Pod-Simple/t/xhtml01.t Pod::Simple test file
cpan/Pod-Simple/t/xhtml05.t Pod::Simple test file
cpan/Pod-Simple/t/xhtml10.t Pod::Simple test file
cpan/Pod-Simple/t/x_nixer.t Pod::Simple test file
+cpan/Shell/Shell.pm Make AUTOLOADed system() calls
+cpan/Shell/t/Shell.t Tests for above
cpan/Sys-Syslog/Changes Changlog for Sys::Syslog
cpan/Sys-Syslog/fallback/const-c.inc Sys::Syslog constants fallback file
cpan/Sys-Syslog/fallback/const-xs.inc Sys::Syslog constants fallback file
diff --git a/Porting/Maintainers.pl b/Porting/Maintainers.pl
index b59e32d..5929342 100755
--- a/Porting/Maintainers.pl
+++ b/Porting/Maintainers.pl
@@ -1237,6 +1237,17 @@ use File::Glob qw(:case);
'UPSTREAM' => 'blead',
},
+ 'Shell' =>
+ {
+ 'MAINTAINER' => 'ferreira',
+ 'DISTRIBUTION' => 'FERREIRA/Shell-0.72_01.tar.gz',
+ 'FILES' => q[cpan/Shell],
+ 'EXCLUDED' => [ qw{ t/01_use.t t/99_pod.t } ],
+ 'CPAN' => 1,
+ 'UPSTREAM' => undef,
+ 'DEPRECATED' => 5.011,
+ },
+
'Storable' =>
{
'MAINTAINER' => 'ams',
diff --git a/cpan/Shell/Shell.pm b/cpan/Shell/Shell.pm
new file mode 100644
index 0000000..66a0c6b
--- /dev/null
+++ b/cpan/Shell/Shell.pm
@@ -0,0 +1,272 @@
+package Shell;
+use 5.006_001;
+use strict;
+use warnings;
+use File::Spec::Functions;
+
+our($capture_stderr, $raw, $VERSION, $AUTOLOAD);
+
+$VERSION = '0.72_01';
+$VERSION = eval $VERSION;
+
+use if $] >= 5.011, 'deprecate';
+
+sub new { bless \my $foo, shift }
+sub DESTROY { }
+
+sub import {
+ my $self = shift;
+ my ($callpack, $callfile, $callline) = caller;
+ my @EXPORT;
+ if (@_) {
+ @EXPORT = @_;
+ } else {
+ @EXPORT = 'AUTOLOAD';
+ }
+ foreach my $sym (@EXPORT) {
+ no strict 'refs';
+ *{"${callpack}::$sym"} = \&{"Shell::$sym"};
+ }
+}
+
+# NOTE: this is used to enable constant folding in
+# expressions like (OS eq 'MSWin32') and
+# (OS eq 'os2') just like it happened in 0.6 version
+# which used eval "string" to install subs on the fly.
+use constant OS => $^O;
+
+=begin private
+
+=item B<_make_cmd>
+
+ $sub = _make_cmd($cmd);
+ $sub = $shell->_make_cmd($cmd);
+
+Creates a closure which invokes the system command C<$cmd>.
+
+=end private
+
+=cut
+
+sub _make_cmd {
+ shift if ref $_[0] && $_[0]->isa( 'Shell' );
+ my $cmd = shift;
+ my $null = File::Spec::Functions::devnull();
+ $Shell::capture_stderr ||= 0;
+ # closing over $^O, $cmd, and $null
+ return sub {
+ shift if ref $_[0] && $_[0]->isa( 'Shell' );
+ if (@_ < 1) {
+ $Shell::capture_stderr == 1 ? `$cmd 2>&1` :
+ $Shell::capture_stderr == -1 ? `$cmd 2>$null` :
+ `$cmd`;
+ } elsif (OS eq 'os2') {
+ local(*SAVEOUT, *READ, *WRITE);
+
+ open SAVEOUT, '>&STDOUT' or die;
+ pipe READ, WRITE or die;
+ open STDOUT, '>&WRITE' or die;
+ close WRITE;
+
+ my $pid = system(1, $cmd, @_);
+ die "Can't execute $cmd: $!\n" if $pid < 0;
+
+ open STDOUT, '>&SAVEOUT' or die;
+ close SAVEOUT;
+
+ if (wantarray) {
+ my @ret = <READ>;
+ close READ;
+ waitpid $pid, 0;
+ @ret;
+ } else {
+ local($/) = undef;
+ my $ret = <READ>;
+ close READ;
+ waitpid $pid, 0;
+ $ret;
+ }
+ } else {
+ my $a;
+ my @arr = @_;
+ unless( $Shell::raw ){
+ if (OS eq 'MSWin32') {
+ # XXX this special-casing should not be needed
+ # if we do quoting right on Windows. :-(
+ #
+ # First, escape all quotes. Cover the case where we
+ # want to pass along a quote preceded by a backslash
+ # (i.e., C<"param \""" end">).
+ # Ugly, yup? You know, windoze.
+ # Enclose in quotes only the parameters that need it:
+ # try this: c:> dir "/w"
+ # and this: c:> dir /w
+ for (@arr) {
+ s/"/\\"/g;
+ s/\\\\"/\\\\"""/g;
+ $_ = qq["$_"] if /\s/;
+ }
+ } else {
+ for (@arr) {
+ s/(['\\])/\\$1/g;
+ $_ = $_;
+ }
+ }
+ }
+ push @arr, '2>&1' if $Shell::capture_stderr == 1;
+ push @arr, '2>$null' if $Shell::capture_stderr == -1;
+ open(SUBPROC, join(' ', $cmd, @arr, '|'))
+ or die "Can't exec $cmd: $!\n";
+ if (wantarray) {
+ my @ret = <SUBPROC>;
+ close SUBPROC; # XXX Oughta use a destructor.
+ @ret;
+ } else {
+ local($/) = undef;
+ my $ret = <SUBPROC>;
+ close SUBPROC;
+ $ret;
+ }
+ }
+ };
+ }
+
+sub AUTOLOAD {
+ shift if ref $_[0] && $_[0]->isa( 'Shell' );
+ my $cmd = $AUTOLOAD;
+ $cmd =~ s/^.*:://;
+ no strict 'refs';
+ *$AUTOLOAD = _make_cmd($cmd);
+ goto &$AUTOLOAD;
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+Shell - run shell commands transparently within perl
+
+=head1 SYNOPSIS
+
+ use Shell qw(cat ps cp);
+ $passwd = cat('</etc/passwd');
+ @pslines = ps('-ww'),
+ cp("/etc/passwd", "/tmp/passwd");
+
+ # object oriented
+ my $sh = Shell->new;
+ print $sh->ls('-l');
+
+=head1 DESCRIPTION
+
+=head2 Caveats
+
+This package is included as a show case, illustrating a few Perl features.
+It shouldn't be used for production programs. Although it does provide a
+simple interface for obtaining the standard output of arbitrary commands,
+there may be better ways of achieving what you need.
+
+Running shell commands while obtaining standard output can be done with the
+C<qx/STRING/> operator, or by calling C<open> with a filename expression that
+ends with C<|>, giving you the option to process one line at a time.
+If you don't need to process standard output at all, you might use C<system>
+(in preference of doing a print with the collected standard output).
+
+Since Shell.pm and all of the aforementioned techniques use your system's
+shell to call some local command, none of them is portable across different
+systems. Note, however, that there are several built in functions and
+library packages providing portable implementations of functions operating
+on files, such as: C<glob>, C<link> and C<unlink>, C<mkdir> and C<rmdir>,
+C<rename>, C<File::Compare>, C<File::Copy>, C<File::Find> etc.
+
+Using Shell.pm while importing C<foo> creates a subroutine C<foo> in the
+namespace of the importing package. Calling C<foo> with arguments C<arg1>,
+C<arg2>,... results in a shell command C<foo arg1 arg2...>, where the
+function name and the arguments are joined with a blank. (See the subsection
+on Escaping magic characters.) Since the result is essentially a command
+line to be passed to the shell, your notion of arguments to the Perl
+function is not necessarily identical to what the shell treats as a
+command line token, to be passed as an individual argument to the program.
+Furthermore, note that this implies that C<foo> is callable by file name
+only, which frequently depends on the setting of the program's environment.
+
+Creating a Shell object gives you the opportunity to call any command
+in the usual OO notation without requiring you to announce it in the
+C<use Shell> statement. Don't assume any additional semantics being
+associated with a Shell object: in no way is it similar to a shell
+process with its environment or current working directory or any
+other setting.
+
+=head2 Escaping Magic Characters
+
+It is, in general, impossible to take care of quoting the shell's
+magic characters. For some obscure reason, however, Shell.pm quotes
+apostrophes (C<'>) and backslashes (C<\>) on UNIX, and spaces and
+quotes (C<">) on Windows.
+
+=head2 Configuration
+
+If you set $Shell::capture_stderr to 1, the module will attempt to
+capture the standard error output of the process as well. This is
+done by adding C<2E<gt>&1> to the command line, so don't try this on
+a system not supporting this redirection.
+
+Setting $Shell::capture_stderr to -1 will send standard error to the
+bit bucket (i.e., the equivalent of adding C<2E<gt>/dev/null> to the
+command line). The same caveat regarding redirection applies.
+
+If you set $Shell::raw to true no quoting whatsoever is done.
+
+=head1 BUGS
+
+Quoting should be off by default.
+
+It isn't possible to call shell built in commands, but it can be
+done by using a workaround, e.g. shell( '-c', 'set' ).
+
+Capturing standard error does not work on some systems (e.g. VMS).
+
+=head1 AUTHOR
+
+ Date: Thu, 22 Sep 94 16:18:16 -0700
+ Message-Id: <***@scalpel.netlabs.com>
+ To: perl5-***@isu.edu
+ From: Larry Wall <***@scalpel.netlabs.com>
+ Subject: a new module I just wrote
+
+Here's one that'll whack your mind a little out.
+
+ #!/usr/bin/perl
+
+ use Shell;
+
+ $foo = echo("howdy", "<funny>", "world");
+ print $foo;
+
+ $passwd = cat("</etc/passwd");
+ print $passwd;
+
+ sub ps;
+ print ps -ww;
+
+ cp("/etc/passwd", "/etc/passwd.orig");
+
+That's maybe too gonzo. It actually exports an AUTOLOAD to the current
+package (and uncovered a bug in Beta 3, by the way). Maybe the usual
+usage should be
+
+ use Shell qw(echo cat ps cp);
+
+Larry Wall
+
+Changes by ***@Krynicky.cz and Dave Cottle <***@csc.canterbury.ac.nz>.
+
+Changes for OO syntax and bug fixes by Casey West <***@geeknest.com>.
+
+C<$Shell::raw> and pod rewrite by Wolfgang Laun.
+
+Rewritten to use closures rather than C<eval "string"> by Adriano Ferreira.
+
+=cut
diff --git a/cpan/Shell/t/Shell.t b/cpan/Shell/t/Shell.t
new file mode 100644
index 0000000..cc6f616
--- /dev/null
+++ b/cpan/Shell/t/Shell.t
@@ -0,0 +1,65 @@
+#!./perl
+
+use Test::More tests => 7;
+
+BEGIN { use_ok('Shell'); }
+
+my $so = Shell->new;
+ok($so, 'Shell->new');
+
+my $Is_VMS = $^O eq 'VMS';
+my $Is_MSWin32 = $^O eq 'MSWin32';
+my $Is_NetWare = $^O eq 'NetWare';
+
+$Shell::capture_stderr = 1;
+
+# Now test that that works ..
+
+my $tmpfile = 'sht0001';
+while ( -f $tmpfile ) {
+ $tmpfile++;
+}
+END { -f $tmpfile && (open STDERR, '>&SAVERR' and unlink $tmpfile) }
+
+no warnings 'once';
+# no false warning about Name "main::SAVERR" used only once: possible typo
+
+open(SAVERR, ">&STDERR");
+open(STDERR, ">$tmpfile");
+
+xXx_not_there(); # Ok someone could have a program called this :(
+
+# On os2 the warning is on by default...
+ok(($^O eq 'os2' xor !(-s $tmpfile)), '$Shell::capture_stderr');
+
+$Shell::capture_stderr = 0;
+
+# someone will have to fill in the blanks for other platforms
+
+if ($Is_VMS) {
+ ok(directory(), 'Execute command');
+ my @files = directory('*.*');
+ ok(@files, 'Quoted arguments');
+
+ ok(eq_array(\@files, [$so->directory('*.*')]), 'object method');
+ eval { $so->directory };
+ ok(!$@, '2 methods calls');
+} elsif ($Is_MSWin32) {
+ ok(dir(), 'Execute command');
+ my @files = grep !/bytes free$/, dir('*.*');
+ ok(@files, 'Quoted arguments');
+
+ ok(eq_array(\@files, [grep !/bytes free$/, $so->dir('*.*')]), 'object method');
+ eval { $so->dir };
+ ok(!$@, '2 methods calls');
+} else {
+ ok(ls(), 'Execute command');
+ my @files = ls('*');
+ ok(@files, 'Quoted arguments');
+
+ ok(eq_array(\@files, [$so->ls('*')]), 'object method');
+ eval { $so->ls };
+ ok(!$@, '2 methods calls');
+
+}
+open(STDERR, ">&SAVERR") ;
--
Perl5 Master Repository
<http://perl5.git.perl.org/perl.git/commitdiff/142c3795604e17a31bf6c9e74242f4d464918df6?hp=54e46954ab12982844ed64c0ec9c2ef9ff7fcdfb>
- Log -----------------------------------------------------------------
commit 142c3795604e17a31bf6c9e74242f4d464918df6
Author: Jesse Vincent <***@bestpractical.com>
Date: Tue May 18 12:17:24 2010 -0400
Actually note that Shell.pm is deprecated for 5.13 and 5.14, so we can
remove it in 5.15 in the Spring of 2011.
M cpan/Shell/Shell.pm
commit c9a0cae924d6331f0cc9997f1841d0544a2e5f63
Author: Jesse Vincent <***@bestpractical.com>
Date: Tue May 18 12:15:41 2010 -0400
Shell.pm was missing its deprecation warning in 5.12. So it can't be
removed in 5.14.
Revert "Remove Shell from the core distribution. Get it from CPAN now."
This reverts commit 28d302d426b73ed76fdcc816dd51bb1a8f93332b.
M MANIFEST
M Porting/Maintainers.pl
A cpan/Shell/Shell.pm
A cpan/Shell/t/Shell.t
-----------------------------------------------------------------------
Summary of changes:
MANIFEST | 2 +
Porting/Maintainers.pl | 11 ++
cpan/Shell/Shell.pm | 272 ++++++++++++++++++++++++++++++++++++++++++++++++
cpan/Shell/t/Shell.t | 65 ++++++++++++
4 files changed, 350 insertions(+), 0 deletions(-)
create mode 100644 cpan/Shell/Shell.pm
create mode 100644 cpan/Shell/t/Shell.t
diff --git a/MANIFEST b/MANIFEST
index 3963c22..828714c 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -2019,6 +2019,8 @@ cpan/Pod-Simple/t/xhtml01.t Pod::Simple test file
cpan/Pod-Simple/t/xhtml05.t Pod::Simple test file
cpan/Pod-Simple/t/xhtml10.t Pod::Simple test file
cpan/Pod-Simple/t/x_nixer.t Pod::Simple test file
+cpan/Shell/Shell.pm Make AUTOLOADed system() calls
+cpan/Shell/t/Shell.t Tests for above
cpan/Sys-Syslog/Changes Changlog for Sys::Syslog
cpan/Sys-Syslog/fallback/const-c.inc Sys::Syslog constants fallback file
cpan/Sys-Syslog/fallback/const-xs.inc Sys::Syslog constants fallback file
diff --git a/Porting/Maintainers.pl b/Porting/Maintainers.pl
index b59e32d..5929342 100755
--- a/Porting/Maintainers.pl
+++ b/Porting/Maintainers.pl
@@ -1237,6 +1237,17 @@ use File::Glob qw(:case);
'UPSTREAM' => 'blead',
},
+ 'Shell' =>
+ {
+ 'MAINTAINER' => 'ferreira',
+ 'DISTRIBUTION' => 'FERREIRA/Shell-0.72_01.tar.gz',
+ 'FILES' => q[cpan/Shell],
+ 'EXCLUDED' => [ qw{ t/01_use.t t/99_pod.t } ],
+ 'CPAN' => 1,
+ 'UPSTREAM' => undef,
+ 'DEPRECATED' => 5.011,
+ },
+
'Storable' =>
{
'MAINTAINER' => 'ams',
diff --git a/cpan/Shell/Shell.pm b/cpan/Shell/Shell.pm
new file mode 100644
index 0000000..66a0c6b
--- /dev/null
+++ b/cpan/Shell/Shell.pm
@@ -0,0 +1,272 @@
+package Shell;
+use 5.006_001;
+use strict;
+use warnings;
+use File::Spec::Functions;
+
+our($capture_stderr, $raw, $VERSION, $AUTOLOAD);
+
+$VERSION = '0.72_01';
+$VERSION = eval $VERSION;
+
+use if $] >= 5.011, 'deprecate';
+
+sub new { bless \my $foo, shift }
+sub DESTROY { }
+
+sub import {
+ my $self = shift;
+ my ($callpack, $callfile, $callline) = caller;
+ my @EXPORT;
+ if (@_) {
+ @EXPORT = @_;
+ } else {
+ @EXPORT = 'AUTOLOAD';
+ }
+ foreach my $sym (@EXPORT) {
+ no strict 'refs';
+ *{"${callpack}::$sym"} = \&{"Shell::$sym"};
+ }
+}
+
+# NOTE: this is used to enable constant folding in
+# expressions like (OS eq 'MSWin32') and
+# (OS eq 'os2') just like it happened in 0.6 version
+# which used eval "string" to install subs on the fly.
+use constant OS => $^O;
+
+=begin private
+
+=item B<_make_cmd>
+
+ $sub = _make_cmd($cmd);
+ $sub = $shell->_make_cmd($cmd);
+
+Creates a closure which invokes the system command C<$cmd>.
+
+=end private
+
+=cut
+
+sub _make_cmd {
+ shift if ref $_[0] && $_[0]->isa( 'Shell' );
+ my $cmd = shift;
+ my $null = File::Spec::Functions::devnull();
+ $Shell::capture_stderr ||= 0;
+ # closing over $^O, $cmd, and $null
+ return sub {
+ shift if ref $_[0] && $_[0]->isa( 'Shell' );
+ if (@_ < 1) {
+ $Shell::capture_stderr == 1 ? `$cmd 2>&1` :
+ $Shell::capture_stderr == -1 ? `$cmd 2>$null` :
+ `$cmd`;
+ } elsif (OS eq 'os2') {
+ local(*SAVEOUT, *READ, *WRITE);
+
+ open SAVEOUT, '>&STDOUT' or die;
+ pipe READ, WRITE or die;
+ open STDOUT, '>&WRITE' or die;
+ close WRITE;
+
+ my $pid = system(1, $cmd, @_);
+ die "Can't execute $cmd: $!\n" if $pid < 0;
+
+ open STDOUT, '>&SAVEOUT' or die;
+ close SAVEOUT;
+
+ if (wantarray) {
+ my @ret = <READ>;
+ close READ;
+ waitpid $pid, 0;
+ @ret;
+ } else {
+ local($/) = undef;
+ my $ret = <READ>;
+ close READ;
+ waitpid $pid, 0;
+ $ret;
+ }
+ } else {
+ my $a;
+ my @arr = @_;
+ unless( $Shell::raw ){
+ if (OS eq 'MSWin32') {
+ # XXX this special-casing should not be needed
+ # if we do quoting right on Windows. :-(
+ #
+ # First, escape all quotes. Cover the case where we
+ # want to pass along a quote preceded by a backslash
+ # (i.e., C<"param \""" end">).
+ # Ugly, yup? You know, windoze.
+ # Enclose in quotes only the parameters that need it:
+ # try this: c:> dir "/w"
+ # and this: c:> dir /w
+ for (@arr) {
+ s/"/\\"/g;
+ s/\\\\"/\\\\"""/g;
+ $_ = qq["$_"] if /\s/;
+ }
+ } else {
+ for (@arr) {
+ s/(['\\])/\\$1/g;
+ $_ = $_;
+ }
+ }
+ }
+ push @arr, '2>&1' if $Shell::capture_stderr == 1;
+ push @arr, '2>$null' if $Shell::capture_stderr == -1;
+ open(SUBPROC, join(' ', $cmd, @arr, '|'))
+ or die "Can't exec $cmd: $!\n";
+ if (wantarray) {
+ my @ret = <SUBPROC>;
+ close SUBPROC; # XXX Oughta use a destructor.
+ @ret;
+ } else {
+ local($/) = undef;
+ my $ret = <SUBPROC>;
+ close SUBPROC;
+ $ret;
+ }
+ }
+ };
+ }
+
+sub AUTOLOAD {
+ shift if ref $_[0] && $_[0]->isa( 'Shell' );
+ my $cmd = $AUTOLOAD;
+ $cmd =~ s/^.*:://;
+ no strict 'refs';
+ *$AUTOLOAD = _make_cmd($cmd);
+ goto &$AUTOLOAD;
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+Shell - run shell commands transparently within perl
+
+=head1 SYNOPSIS
+
+ use Shell qw(cat ps cp);
+ $passwd = cat('</etc/passwd');
+ @pslines = ps('-ww'),
+ cp("/etc/passwd", "/tmp/passwd");
+
+ # object oriented
+ my $sh = Shell->new;
+ print $sh->ls('-l');
+
+=head1 DESCRIPTION
+
+=head2 Caveats
+
+This package is included as a show case, illustrating a few Perl features.
+It shouldn't be used for production programs. Although it does provide a
+simple interface for obtaining the standard output of arbitrary commands,
+there may be better ways of achieving what you need.
+
+Running shell commands while obtaining standard output can be done with the
+C<qx/STRING/> operator, or by calling C<open> with a filename expression that
+ends with C<|>, giving you the option to process one line at a time.
+If you don't need to process standard output at all, you might use C<system>
+(in preference of doing a print with the collected standard output).
+
+Since Shell.pm and all of the aforementioned techniques use your system's
+shell to call some local command, none of them is portable across different
+systems. Note, however, that there are several built in functions and
+library packages providing portable implementations of functions operating
+on files, such as: C<glob>, C<link> and C<unlink>, C<mkdir> and C<rmdir>,
+C<rename>, C<File::Compare>, C<File::Copy>, C<File::Find> etc.
+
+Using Shell.pm while importing C<foo> creates a subroutine C<foo> in the
+namespace of the importing package. Calling C<foo> with arguments C<arg1>,
+C<arg2>,... results in a shell command C<foo arg1 arg2...>, where the
+function name and the arguments are joined with a blank. (See the subsection
+on Escaping magic characters.) Since the result is essentially a command
+line to be passed to the shell, your notion of arguments to the Perl
+function is not necessarily identical to what the shell treats as a
+command line token, to be passed as an individual argument to the program.
+Furthermore, note that this implies that C<foo> is callable by file name
+only, which frequently depends on the setting of the program's environment.
+
+Creating a Shell object gives you the opportunity to call any command
+in the usual OO notation without requiring you to announce it in the
+C<use Shell> statement. Don't assume any additional semantics being
+associated with a Shell object: in no way is it similar to a shell
+process with its environment or current working directory or any
+other setting.
+
+=head2 Escaping Magic Characters
+
+It is, in general, impossible to take care of quoting the shell's
+magic characters. For some obscure reason, however, Shell.pm quotes
+apostrophes (C<'>) and backslashes (C<\>) on UNIX, and spaces and
+quotes (C<">) on Windows.
+
+=head2 Configuration
+
+If you set $Shell::capture_stderr to 1, the module will attempt to
+capture the standard error output of the process as well. This is
+done by adding C<2E<gt>&1> to the command line, so don't try this on
+a system not supporting this redirection.
+
+Setting $Shell::capture_stderr to -1 will send standard error to the
+bit bucket (i.e., the equivalent of adding C<2E<gt>/dev/null> to the
+command line). The same caveat regarding redirection applies.
+
+If you set $Shell::raw to true no quoting whatsoever is done.
+
+=head1 BUGS
+
+Quoting should be off by default.
+
+It isn't possible to call shell built in commands, but it can be
+done by using a workaround, e.g. shell( '-c', 'set' ).
+
+Capturing standard error does not work on some systems (e.g. VMS).
+
+=head1 AUTHOR
+
+ Date: Thu, 22 Sep 94 16:18:16 -0700
+ Message-Id: <***@scalpel.netlabs.com>
+ To: perl5-***@isu.edu
+ From: Larry Wall <***@scalpel.netlabs.com>
+ Subject: a new module I just wrote
+
+Here's one that'll whack your mind a little out.
+
+ #!/usr/bin/perl
+
+ use Shell;
+
+ $foo = echo("howdy", "<funny>", "world");
+ print $foo;
+
+ $passwd = cat("</etc/passwd");
+ print $passwd;
+
+ sub ps;
+ print ps -ww;
+
+ cp("/etc/passwd", "/etc/passwd.orig");
+
+That's maybe too gonzo. It actually exports an AUTOLOAD to the current
+package (and uncovered a bug in Beta 3, by the way). Maybe the usual
+usage should be
+
+ use Shell qw(echo cat ps cp);
+
+Larry Wall
+
+Changes by ***@Krynicky.cz and Dave Cottle <***@csc.canterbury.ac.nz>.
+
+Changes for OO syntax and bug fixes by Casey West <***@geeknest.com>.
+
+C<$Shell::raw> and pod rewrite by Wolfgang Laun.
+
+Rewritten to use closures rather than C<eval "string"> by Adriano Ferreira.
+
+=cut
diff --git a/cpan/Shell/t/Shell.t b/cpan/Shell/t/Shell.t
new file mode 100644
index 0000000..cc6f616
--- /dev/null
+++ b/cpan/Shell/t/Shell.t
@@ -0,0 +1,65 @@
+#!./perl
+
+use Test::More tests => 7;
+
+BEGIN { use_ok('Shell'); }
+
+my $so = Shell->new;
+ok($so, 'Shell->new');
+
+my $Is_VMS = $^O eq 'VMS';
+my $Is_MSWin32 = $^O eq 'MSWin32';
+my $Is_NetWare = $^O eq 'NetWare';
+
+$Shell::capture_stderr = 1;
+
+# Now test that that works ..
+
+my $tmpfile = 'sht0001';
+while ( -f $tmpfile ) {
+ $tmpfile++;
+}
+END { -f $tmpfile && (open STDERR, '>&SAVERR' and unlink $tmpfile) }
+
+no warnings 'once';
+# no false warning about Name "main::SAVERR" used only once: possible typo
+
+open(SAVERR, ">&STDERR");
+open(STDERR, ">$tmpfile");
+
+xXx_not_there(); # Ok someone could have a program called this :(
+
+# On os2 the warning is on by default...
+ok(($^O eq 'os2' xor !(-s $tmpfile)), '$Shell::capture_stderr');
+
+$Shell::capture_stderr = 0;
+
+# someone will have to fill in the blanks for other platforms
+
+if ($Is_VMS) {
+ ok(directory(), 'Execute command');
+ my @files = directory('*.*');
+ ok(@files, 'Quoted arguments');
+
+ ok(eq_array(\@files, [$so->directory('*.*')]), 'object method');
+ eval { $so->directory };
+ ok(!$@, '2 methods calls');
+} elsif ($Is_MSWin32) {
+ ok(dir(), 'Execute command');
+ my @files = grep !/bytes free$/, dir('*.*');
+ ok(@files, 'Quoted arguments');
+
+ ok(eq_array(\@files, [grep !/bytes free$/, $so->dir('*.*')]), 'object method');
+ eval { $so->dir };
+ ok(!$@, '2 methods calls');
+} else {
+ ok(ls(), 'Execute command');
+ my @files = ls('*');
+ ok(@files, 'Quoted arguments');
+
+ ok(eq_array(\@files, [$so->ls('*')]), 'object method');
+ eval { $so->ls };
+ ok(!$@, '2 methods calls');
+
+}
+open(STDERR, ">&SAVERR") ;
--
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