package File::Copy;
-use 5.6.0;
+use 5.006;
use strict;
use warnings;
use Carp;
use File::Spec;
+use Config;
our(@ISA, @EXPORT, @EXPORT_OK, $VERSION, $Too_Big, $Syscopy_is_copy);
sub copy;
sub syscopy;
# package has not yet been updated to work with Perl 5.004, and so it
# would be a Bad Thing for the CPAN module to grab it and replace this
# module. Therefore, we set this module's version higher than 2.0.
-$VERSION = '2.04';
+$VERSION = '2.05';
require Exporter;
@ISA = qw(Exporter);
$Too_Big = 1024 * 1024 * 2;
+my $macfiles;
+if ($^O eq 'MacOS') {
+ $macfiles = eval { require Mac::MoreFiles };
+ warn 'Mac::MoreFiles could not be loaded; using non-native syscopy'
+ if $^W;
+}
+
sub _catname {
my($from, $to) = @_;
if (not defined &basename) {
|| UNIVERSAL::isa($to, 'IO::Handle'))
: (ref(\$to) eq 'GLOB'));
+ if ($from eq $to) { # works for references, too
+ croak("'$from' and '$to' are identical (not copied)");
+ }
+
+ if ($Config{d_symlink} && $Config{d_readlink} &&
+ !($^O eq 'Win32' || $^O eq 'os2' || $^O eq 'vms')) {
+ no warnings 'io'; # don't warn if -l on filehandle
+ if ((-e $from && -l $from) || (-e $to && -l $to)) {
+ my @fs = stat($from);
+ my @ts = stat($to);
+ if (@fs && @ts && $fs[0] == $ts[0] && $fs[1] == $ts[1]) {
+ croak("'$from' and '$to' are identical (not copied)");
+ }
+ }
+ }
+
if (!$from_a_handle && !$to_a_handle && -d $to && ! -d $from) {
$to = _catname($from, $to);
}
&& !($from_a_handle && $^O eq 'mpeix') # and neither can MPE/iX.
&& !($from_a_handle && $^O eq 'MSWin32')
&& !($from_a_handle && $^O eq 'MacOS')
+ && !($from_a_handle && $^O eq 'NetWare')
)
{
return syscopy($from, $to);
my $closefrom = 0;
my $closeto = 0;
my ($size, $status, $r, $buf);
- local(*FROM, *TO);
local($\) = '';
+ my $from_h;
if ($from_a_handle) {
- *FROM = *$from{FILEHANDLE};
+ $from_h = $from;
} else {
$from = _protect($from) if $from =~ /^\s/s;
- open(FROM, "< $from\0") or goto fail_open1;
- binmode FROM or die "($!,$^E)";
+ $from_h = \do { local *FH };
+ open($from_h, "< $from\0") or goto fail_open1;
+ binmode $from_h or die "($!,$^E)";
$closefrom = 1;
}
+ my $to_h;
if ($to_a_handle) {
- *TO = *$to{FILEHANDLE};
+ $to_h = $to;
} else {
$to = _protect($to) if $to =~ /^\s/s;
- open(TO,"> $to\0") or goto fail_open2;
- binmode TO or die "($!,$^E)";
+ $to_h = \do { local *FH };
+ open($to_h,"> $to\0") or goto fail_open2;
+ binmode $to_h or die "($!,$^E)";
$closeto = 1;
}
$size = shift(@_) + 0;
croak("Bad buffer size for copy: $size\n") unless ($size > 0);
} else {
- $size = -s FROM;
+ $size = tied(*$from_h) ? 0 : -s $from_h || 0;
$size = 1024 if ($size < 512);
$size = $Too_Big if ($size > $Too_Big);
}
$! = 0;
for (;;) {
my ($r, $w, $t);
- defined($r = sysread(FROM, $buf, $size))
+ defined($r = sysread($from_h, $buf, $size))
or goto fail_inner;
last unless $r;
for ($w = 0; $w < $r; $w += $t) {
- $t = syswrite(TO, $buf, $r - $w, $w)
+ $t = syswrite($to_h, $buf, $r - $w, $w)
or goto fail_inner;
}
}
- close(TO) || goto fail_open2 if $closeto;
- close(FROM) || goto fail_open1 if $closefrom;
+ close($to_h) || goto fail_open2 if $closeto;
+ close($from_h) || goto fail_open1 if $closefrom;
# Use this idiom to avoid uninitialized value warning.
return 1;
if ($closeto) {
$status = $!;
$! = 0;
- close TO;
+ close $to_h;
$! = $status unless $!;
}
fail_open2:
if ($closefrom) {
$status = $!;
$! = 0;
- close FROM;
+ close $from_h;
$! = $status unless $!;
}
fail_open1:
return 0 unless @_ == 2;
return Win32::CopyFile(@_, 1);
};
- } elsif ($^O eq 'MacOS') {
- require Mac::MoreFiles;
+ } elsif ($macfiles) {
*syscopy = sub {
my($from, $to) = @_;
my($dir, $toname);
glob. Obviously, if the first argument is a filehandle of some
sort, it will be read from, and if it is a file I<name> it will
be opened for reading. Likewise, the second argument will be
-written to (and created if need be).
+written to (and created if need be). Trying to copy a file on top
+of itself is a fatal error.
B<Note that passing in
files as handles instead of names may lead to loss of information
file specified in the first parameter to the file specified in the
second parameter, preserving OS-specific attributes and file
structure. For Unix systems, this is equivalent to the simple
-C<copy> routine. For VMS systems, this calls the C<rmscopy>
-routine (see below). For OS/2 systems, this calls the C<syscopy>
-XSUB directly. For Win32 systems, this calls C<Win32::CopyFile>.
+C<copy> routine, which doesn't preserve OS-specific attributes. For
+VMS systems, this calls the C<rmscopy> routine (see below). For OS/2
+systems, this calls the C<syscopy> XSUB directly. For Win32 systems,
+this calls C<Win32::CopyFile>.
+
+On Mac OS (Classic), C<syscopy> calls C<Mac::MoreFiles::FSpFileCopy>,
+if available.
=head2 Special behaviour if C<syscopy> is defined (OS/2, VMS and Win32)
projects / p5sagit/p5-mst-13.2.git / blobdiff