Initial Commit

database/perl/lib/ExtUtils/Command.pm

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+package ExtUtils::Command;
+
+use 5.00503;
+use strict;
+use warnings;
+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 = '7.58';
+$VERSION =~ tr/_//d;
+
+my $Is_VMS   = $^O eq 'VMS';
+my $Is_VMS_mode = $Is_VMS;
+my $Is_VMS_noefs = $Is_VMS;
+my $Is_Win32 = $^O eq 'MSWin32';
+
+if( $Is_VMS ) {
+    my $vms_unix_rpt;
+    my $vms_efs;
+    my $vms_case;
+
+    if (eval { local $SIG{__DIE__};
+               local @INC = @INC;
+               pop @INC if $INC[-1] eq '.';
+               require VMS::Feature; }) {
+        $vms_unix_rpt = VMS::Feature::current("filename_unix_report");
+        $vms_efs = VMS::Feature::current("efs_charset");
+        $vms_case = VMS::Feature::current("efs_case_preserve");
+    } else {
+        my $unix_rpt = $ENV{'DECC$FILENAME_UNIX_REPORT'} || '';
+        my $efs_charset = $ENV{'DECC$EFS_CHARSET'} || '';
+        my $efs_case = $ENV{'DECC$EFS_CASE_PRESERVE'} || '';
+        $vms_unix_rpt = $unix_rpt =~ /^[ET1]/i;
+        $vms_efs = $efs_charset =~ /^[ET1]/i;
+        $vms_case = $efs_case =~ /^[ET1]/i;
+    }
+    $Is_VMS_mode = 0 if $vms_unix_rpt;
+    $Is_VMS_noefs = 0 if ($vms_efs);
+}
+
+
+=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($_) : $_,@ARGV);
+}
+
+
+=item cat
+
+    cat file ...
+
+Concatenates all files mentioned on command line to STDOUT.
+
+=cut
+
+sub cat ()
+{
+ expand_wildcards();
+ print while (<>);
+}
+
+=item eqtime
+
+    eqtime source destination
+
+Sets modified time of destination to that of source.
+
+=cut
+
+sub eqtime
+{
+ my ($src,$dst) = @ARGV;
+ local @ARGV = ($dst);  touch();  # in case $dst doesn't exist
+ utime((stat($src))[8,9],$dst);
+}
+
+=item rm_rf
+
+    rm_rf files or directories ...
+
+Removes files and directories - recursively (even if readonly)
+
+=cut
+
+sub rm_rf
+{
+ expand_wildcards();
+ require File::Path;
+ File::Path::rmtree([grep -e $_,@ARGV],0,0);
+}
+
+=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);
+
+        require Carp;
+        Carp::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;
+}
+
+
+=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);
+    }
+}
+
+=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;
+
+    if (@src > 1 && ! -d $dst) {
+        require Carp;
+        Carp::croak("Too many arguments");
+    }
+
+    require File::Copy;
+    my $nok = 0;
+    foreach my $src (@src) {
+        $nok ||= !File::Copy::move($src,$dst);
+    }
+    return !$nok;
+}
+
+=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;
+
+    if (@src > 1 && ! -d $dst) {
+        require Carp;
+        Carp::croak("Too many arguments");
+    }
+
+    require File::Copy;
+    my $nok = 0;
+    foreach my $src (@src) {
+        $nok ||= !File::Copy::copy($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;
+}
+
+=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_mode && $Is_VMS_noefs) {
+        require File::Spec;
+        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).":$!";
+}
+
+=item mkpath
+
+    mkpath directory ...
+
+Creates directories, including any parent directories.
+
+=cut
+
+sub mkpath
+{
+ expand_wildcards();
+ require File::Path;
+ File::Path::mkpath([@ARGV],0,0777);
+}
+
+=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);
+}
+
+=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);
+}
+
+=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 };
+        binmode ORIG; binmode TEMP;
+        while (my $line = <ORIG>) {
+            $line =~ s/\015\012/\012/g;
+            print TEMP $line;
+        }
+	close ORIG;
+	close TEMP;
+	rename $temp, $orig;
+
+    }, @ARGV);
+}
+
+=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
+