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package ExtUtils::Command;
use 5.00503;
use strict;
use Carp;
use File::Copy;
use File::Compare;
use File::Basename;
use File::Path qw(rmtree);
require Exporter;
use vars qw(@ISA @EXPORT @EXPORT_OK $VERSION);
@ISA       = qw(Exporter);
@EXPORT    = qw(cp rm_f rm_rf mv cat eqtime mkpath touch test_f test_d chmod
                dos2unix);
$VERSION = '1.14';
my $Is_VMS   = $^O eq 'VMS';
my $Is_Win32 = $^O eq 'MSWin32';
HideShow 42 lines of Pod
=head1 NAME
ExtUtils::Command - utilities to replace common UNIX commands in Makefiles etc.
=head1 SYNOPSIS
  perl -MExtUtils::Command -e cat files... > destination
  perl -MExtUtils::Command -e mv source... destination
  perl -MExtUtils::Command -e cp source... destination
  perl -MExtUtils::Command -e touch files...
  perl -MExtUtils::Command -e rm_f files...
  perl -MExtUtils::Command -e rm_rf directories...
  perl -MExtUtils::Command -e mkpath directories...
  perl -MExtUtils::Command -e eqtime source destination
  perl -MExtUtils::Command -e test_f file
  perl -MExtUtils::Command -e test_d directory
  perl -MExtUtils::Command -e chmod mode files...
  ...
=head1 DESCRIPTION
The module is used to replace common UNIX commands.  In all cases the
functions work from @ARGV rather than taking arguments.  This makes
them easier to deal with in Makefiles.  Call them like this:
  perl -MExtUtils::Command -e some_command some files to work on
and I<NOT> like this:
  perl -MExtUtils::Command -e 'some_command qw(some files to work on)'
For that use L<Shell::Command>.
Filenames with * and ? will be glob expanded.
=head2 FUNCTIONS
=over 4
=cut
# VMS uses % instead of ? to mean "one character"
my $wild_regex = $Is_VMS ? '*%' : '*?';
sub expand_wildcards
{
 @ARGV = map(/[$wild_regex]/o ? glob($_) : $_,@ARGV);
}
HideShow 8 lines of Pod
=item cat
    cat file ...
Concatenates all files mentioned on command line to STDOUT.
=cut 
sub cat ()
{
 expand_wildcards();
 print while (<>);
}
HideShow 8 lines of Pod
=item eqtime
    eqtime source destination
Sets modified time of destination to that of source.
=cut 
sub eqtime
{
 my ($src,$dst) = @ARGV;
 local @ARGV = ($dst);  touch();  # in case $dst doesn't exist
 utime((stat($src))[8,9],$dst);
}
HideShow 8 lines of Pod
=item rm_rf
    rm_rf files or directories ...
Removes files and directories - recursively (even if readonly)
=cut 
sub rm_rf
{
 expand_wildcards();
 rmtree([grep -e $_,@ARGV],0,0);
}
HideShow 8 lines of Pod
=item rm_f
    rm_f file ...
Removes files (even if readonly)
=cut 
sub rm_f {
    expand_wildcards();
    foreach my $file (@ARGV) {
        next unless -f $file;
        next if _unlink($file);
        chmod(0777, $file);
        next if _unlink($file);
        carp "Cannot delete $file: $!";
    }
}
sub _unlink {
    my $files_unlinked = 0;
    foreach my $file (@_) {
        my $delete_count = 0;
        $delete_count++ while unlink $file;
        $files_unlinked++ if $delete_count;
    }
    return $files_unlinked;
}
HideShow 8 lines of Pod
=item touch
    touch file ...
Makes files exist, with current timestamp 
=cut 
sub touch {
    my $t    = time;
    expand_wildcards();
    foreach my $file (@ARGV) {
        open(FILE,">>$file") || die "Cannot write $file:$!";
        close(FILE);
        utime($t,$t,$file);
    }
}
HideShow 12 lines of Pod
=item mv
    mv source_file destination_file
    mv source_file source_file destination_dir
Moves source to destination.  Multiple sources are allowed if
destination is an existing directory.
Returns true if all moves succeeded, false otherwise.
=cut 
sub mv {
    expand_wildcards();
    my @src = @ARGV;
    my $dst = pop @src;
    croak("Too many arguments") if (@src > 1 && ! -d $dst);
    my $nok = 0;
    foreach my $src (@src) {
        $nok ||= !move($src,$dst);
    }
    return !$nok;
}
HideShow 12 lines of Pod
=item cp
    cp source_file destination_file
    cp source_file source_file destination_dir
Copies sources to the destination.  Multiple sources are allowed if
destination is an existing directory.
Returns true if all copies succeeded, false otherwise.
=cut
sub cp {
    expand_wildcards();
    my @src = @ARGV;
    my $dst = pop @src;
    croak("Too many arguments") if (@src > 1 && ! -d $dst);
    my $nok = 0;
    foreach my $src (@src) {
        $nok ||= !copy($src,$dst);
        # Win32 does not update the mod time of a copied file, just the
        # created time which make does not look at.
        utime(time, time, $dst) if $Is_Win32;
    }
    return $nok;
}
HideShow 8 lines of Pod
=item chmod
    chmod mode files ...
Sets UNIX like permissions 'mode' on all the files.  e.g. 0666
=cut 
sub chmod {
    local @ARGV = @ARGV;
    my $mode = shift(@ARGV);
    expand_wildcards();
    if( $Is_VMS ) {
        foreach my $idx (0..$#ARGV) {
            my $path = $ARGV[$idx];
            next unless -d $path;
            # chmod 0777, [.foo.bar] doesn't work on VMS, you have to do
            # chmod 0777, [.foo]bar.dir
            my @dirs = File::Spec->splitdir( $path );
            $dirs[-1] .= '.dir';
            $path = File::Spec->catfile(@dirs);
            $ARGV[$idx] = $path;
        }
    }
    chmod(oct $mode,@ARGV) || die "Cannot chmod ".join(' ',$mode,@ARGV).":$!";
}
HideShow 8 lines of Pod
=item mkpath
    mkpath directory ...
Creates directories, including any parent directories.
=cut 
sub mkpath
{
 expand_wildcards();
 File::Path::mkpath([@ARGV],0,0777);
}
HideShow 9 lines of Pod
=item test_f
    test_f file
Tests if a file exists.  I<Exits> with 0 if it does, 1 if it does not (ie.
shell's idea of true and false).
=cut 
sub test_f
{
 exit(-f $ARGV[0] ? 0 : 1);
}
HideShow 9 lines of Pod
=item test_d
    test_d directory
Tests if a directory exists.  I<Exits> with 0 if it does, 1 if it does
not (ie. shell's idea of true and false).
=cut
sub test_d
{
 exit(-d $ARGV[0] ? 0 : 1);
}
HideShow 8 lines of Pod
=item dos2unix
    dos2unix files or dirs ...
Converts DOS and OS/2 linefeeds to Unix style recursively.
=cut
sub dos2unix {
    require File::Find;
    File::Find::find(sub {
        return if -d;
        return unless -w _;
        return unless -r _;
        return if -B _;
        local $\;
        my $orig = $_;
        my $temp = '.dos2unix_tmp';
        open ORIG, $_ or do { warn "dos2unix can't open $_: $!"; return };
        open TEMP, ">$temp" or 
            do { warn "dos2unix can't create .dos2unix_tmp: $!"; return };
        while (my $line = <ORIG>) { 
            $line =~ s/\015\012/\012/g;
            print TEMP $line;
        }
        close ORIG;
        close TEMP;
        rename $temp, $orig;
    }, @ARGV);
}
HideShow 17 lines of Pod
=back
=head1 SEE ALSO
Shell::Command which is these same functions but take arguments normally.
=head1 AUTHOR
Nick Ing-Simmons C<ni-s@cpan.org>
Maintained by Michael G Schwern C<schwern@pobox.com> within the
ExtUtils-MakeMaker package and, as a separate CPAN package, by
Randy Kobes C<r.kobes@uwinnipeg.ca>.
=cut