#!/usr/bin/perl -w
#
# Script to print out "shared" files in VSS
# Uses VSS OLE Automation
# Documentation on VSS Object Model can be found at:
# http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnvss/html/msdn_vssole.asp
#
# Written by Robert Cowham (rc@vaccaperna.co.uk)
# Usual disclaimers apply!

require 5.0;
use strict;
use integer;
use Time::Local;
use Win32::OLE;
use Win32::OLE qw(in);
use Win32::OLE::Const;
use Win32::OLE::Variant;

my $USAGE = "VSS Path argument required: [vssdir]\ne.g.\n   $0 \"\$/Project 1/subdir\"\n";
my $root = $ARGV[0];
die($USAGE) if !(defined($root));

# Load up VSS Ole Automation
my $VSSDB = Win32::OLE->new('SourceSafe', 'Quit');
my $consts = Win32::OLE::Const->Load($VSSDB);


# Declare the Username, password and SourceSafe path variables
# For now these are hardcoded
my $UserName = "tjm";
my $Password = "tjm";
my $SrcSafeIni = "C:\\work\\real-vss\\SRCSAFE.INI";

$VSSDB->Open($SrcSafeIni, $UserName, $Password);
my $VSSRoot = $VSSDB->VSSItem($root, 0);
&vss_dir_tree($root);


# Recurse down the list of VSS directories looking for linked files
sub vss_dir_tree
{
  my $rt = shift;

  my $root = $VSSDB->VSSItem($rt, 0);
  if (!$root) {
    print "Error checking directory: $rt\n";
    return;
  }

  my $items = $root->Items(0);
  my $item;
  my $dir;

  foreach $item (in $items) {
    if ($item->Type == $consts->{VSSITEM_PROJECT}) {
        $dir = $item->Name;
        &vss_dir_tree("$rt/$dir");
    }
    else {
        &linked_file("$rt/".$item->Name);
    }
  }

}

# File Version Info
sub linked_file
{
  my $file = shift;

  my $item = $VSSDB->VSSItem($file, 0);
  if (!$item) {
    print "Error Checking $file\n";
    return;
  }
  my $versions = $item->Versions;
  my $link;
  my @links;

  foreach $link (in $item->Links) {
    if ($link->Spec ne $item->Spec) {   # Every item is linked to itself
      push @links, $link->Spec;
    }
  }

  if ($#links > 0) {
    print "File: ".$item->Spec." linked to:\n";
    foreach $link (@links) {
        print "    $link\n";
    }
    print "\n";
  }

}