#!/usr/bin/perl
#
# Compare.pl
#
# Given perforce paths as input arguments, this finds all
# depot filenames in the paths and reports if files
# with the same name have differing contents.
#
# If the same filename occurs more than once, it is
# "diffed" (via p4 diff2) against all other occurances
# of that filename (that is all other occurances in
# the input path spec, not the entire depot!).
#
# If such a filename is not identical to others
# with the same name, then the first line of the p4 diff2
# report is output.
#
# This is intended to be used as a plug-in tool with
# the 2000.1 GUI - it should be passed the
# parameter "%D" and it will then operate on any
# selected files or directories in the client view pane.
#

require 5.0;
use strict;

my @filelist;
my %paths = ();
my $filename;
my $param;

while ($param = shift (@ARGV)) {

	@filelist = `p4 files $param`;

	foreach (@filelist) {
		my ($filespec, $dummy, $changetype, $change) = split;

	        if ($changetype eq "delete") {
        		next;
		}

 	       # find the filename and pathlength of perforce depot path - up to "#" (version mark)
		my $len = rindex ($filespec, "#");      # find end of name.
        	my $pathend = rindex ($filespec, "\/") + 1;
		my $filename = substr ($filespec, $pathend, $len-$pathend);
		my $path = substr  ($filespec, 0, $pathend);

		# store this in a hash of "paths per filename"

  	      push ( @{$paths{$filename}}, $path);
	}
}

# Long-winded bit.
# Diff all files against all other files of the same name.
# report the differing files.

foreach $filename (sort keys %paths) {
	while ( $#{$paths{$filename}} > 0) {
        	my $x = $#{$paths{$filename}};
                my @results = `p4 diff2 ${$paths{$filename}}[$x]$filename ${$paths{$filename}}[$x-1]$filename\n`;
                my @line = split (/\s+/,$results[0]);
                if ($line[$#line] ne "identical") {
			print $results[0];
		}
                $#{$paths{$filename}} -= 1;
	}
}

#print @filelist;