#!/usr/bin/perl -w
# -*- perl -*-
use P4CGI ;
use strict ;
#
#################################################################
#  CONFIGURATION INFORMATION 
#  All config info should be in P4CGI.pm
#
#################################################################
#
#  P4 change browser
#  View list of changes for selected part of depot
#
#################################################################
 
#####
#   This was the most complicated and insane script in P4DB.
#   The reason for this is that features where added and added and added until
#   the script became impossible to maintain and no more features could
#   be added. Despite this I still wanted MORE FEATURES and finally I
#   decided to start all over again and see if it is possible to add the
#   new features if I rewrote it all. And maybe, just maybe, I will
#   manage to make it maintainable this time. We will see......
#                                                    Jan 7 - 2000/Fredric
####
 
#######
# Arguments:
#
# FSPC
#    File specification. Should start with //. Can be more than one file spec
#    in which case they are concatenated (no space, but start each file spec
#    with //).
#    The file specification should not contain any label or revision numbers.
#
# LABEL
#    Label specification. Label for which changes should be listed.
#    There can be only one label.
#
#    NOTE! FSPC or LABEL must be specified.
#
# STATUS
#    Status of changes. Allowed values are "submitted" and "pending".
#    If not supplied "submitted" is assumed. 
#
# EXLABEL (optional)
#    Specify a label to exclude. Same format as LABEL. The changes made for
#    this label are excluded from list. 
#
# MAXCH (optional)
#    Max changes to display. To avoid very large html pages this argument
#    limits the number of changes displayed at one page.
#    If not specified there is a default value used (from config file)
#
# FIRSTCH (optional)
#    When MAXCH is specified this specifies change to start at (for second
#    and subsequent pages)
#
# CHOFFSET (optional)
#    Number of changes already displayed.
#
# SEARCHDESC (optional)
#    View only changes with pattern in description
#
# SEARCH_INVERT (optional)
#    If specified, invert pattern search
#
# USER (optional)
#    View only changes for users specified in comma-separated list
#
# GROUP (optional)
#    View only changes for users in comma-separated list of groups
#
# CLIENT (optional)
#    View only changes for clients specified in comma-separated list 
# 
# SHOWREFERENCED (optional)
#    If present and set to "Y" will try to display description for changes
#    referred to in change description
#    
######
 
 
my $MAGIC_RED=":::RED:::~~~" ;
 
## get server version
my ($serverY,$serverN,$serverX) = &P4CGI::SERVER_VERSION() ;
 
 
###                         ###
###  Get command arguments  ###
###                         ###
 
#
# Get file spec argument
#
my $filespec = &P4CGI::cgi()->param("FSPC") ;
$filespec = &P4CGI::htmlEncode($filespec) if defined $filespec ;
my $FSPC_WasSpecified = $filespec ;
$filespec = "//..." unless defined $filespec ;
$filespec =~ s/\s*\+?\s*\/\//\/\//g ; # replace <space>+<space>// with //
				     # where <space> is 0 or more whitespace charcaters  
my @FSPC = 
    map { 
	if($_) {  "//".$_ ; }
	else   {       () ; } ; 
    } split("//", $filespec ) if defined $filespec ; 
 
#
# Get label argument
#
my $LABEL = &P4CGI::cgi()->param("LABEL") ;
$LABEL = &P4CGI::htmlEncode($LABEL) if defined $LABEL ;
if(defined $LABEL and $LABEL eq "-") { $LABEL = undef ; } ;
 
#
# Check that FSPC or LABEL is specified
#
unless(defined $LABEL or defined $FSPC_WasSpecified) {
    &P4CGI::bail("File spec OR label must be specified") ; 
}
 
#
# Get label to exclude
#
my $EXLABEL = &P4CGI::cgi()->param("EXLABEL") ;
$EXLABEL = &P4CGI::htmlEncode($EXLABEL) if defined $EXLABEL ;
if(defined $EXLABEL and $EXLABEL eq "-") { $EXLABEL = undef ; } ;
 
#
# Get status
#
my $STATUS = &P4CGI::cgi()->param("STATUS") ;
unless(defined $STATUS) { $STATUS = "submitted" ; } ;
 
#
# Get max changes to display
#
my $MAXCH  = P4CGI::cgi()->param("MAXCH") ;
$MAXCH = &P4CGI::MAX_CHANGES() unless(defined $MAXCH) ;
 
#
# Get first change No. to display and offset from start
#
my $FIRSTCH ;
my $CHOFFSET=0  ;
if(defined $MAXCH) {
    $FIRSTCH   = P4CGI::cgi()->param("FIRSTCH") ;
    $CHOFFSET = P4CGI::cgi()->param("CHOFFSETDISP") ;
}
 
 
my $SHOWREFERENCED = P4CGI::cgi()->param("SHOWREFERENCED") ;
$SHOWREFERENCED = undef if defined $SHOWREFERENCED and $SHOWREFERENCED ne "Y" ;
 
#
# Get search data, user and client parameters
#
my $SEARCHDESC = &P4CGI::cgi()->param("SEARCHDESC") ;
$SEARCHDESC=undef if defined $SEARCHDESC and $SEARCHDESC eq "" ;
my $SEARCH_INVERT = &P4CGI::cgi()->param("SEARCH_INVERT") ;
 
my $USER = &P4CGI::cgi()->param("USER") ;
{
    my @tmp = &P4CGI::cgi()->param("USERS") ;
    if(@tmp) {
	if(defined $USER) {
	    $USER .= "," . join(',',@tmp) ;
	} 
	else {
	    $USER = join(',',@tmp) ;
	}
    }
}
$USER=undef if defined $USER and $USER eq "" ;
 
my $GROUP = &P4CGI::cgi()->param("GROUP") ;
{
    my @tmp = &P4CGI::cgi()->param("GROUPS") ;
    if(@tmp) {
	if(defined $GROUP) {
	    $GROUP .= "," . join(',',@tmp) ;
	} 
	else {
	    $GROUP = join(',',@tmp) ;
	}
    }
}
$GROUP=undef if defined $GROUP and $GROUP eq "" ;
 
 
my $CLIENT = &P4CGI::cgi()->param("CLIENT") ;
$CLIENT=undef if defined $CLIENT and $CLIENT eq "" ;
 
###
### Sub getChanges
###
# This subroutine is used to get a set of changes from depot. The parameter is a hash containing
# a set of switches:
#   -long     If set, get changes in "long" format (i.e. full description,
#             not only the first 27 chars)
#   -file     File spec for changes
#   -firstch  First change to look for (or "offset")
#   -maxch    Max changes to get
#   -status   Status ("submitted" or "pending")
#   -user     For specified user only
#   -client   For specified client only
#   -label    Label for file spec
#   -lastch   Reference to scalar to receive last change parsed
#   -lastrch  Reference to scalar to receive last change parsed and returned in result
#   -resultto A reference to a hash to receive result
#   -select   A reference to a subroutine to call that determine if a change should be included
#             in list. The subroutine gets parameters: (<change>,<date>,<user>,<client>,<description>)
#             The <description> parameter is passed as a reference and can be modified
#             The subroutine should return true if the change should be included.
#             NOTE! The -select parameter is very important to understand if you plan to
#                   understand more of this code.
#
# Another important thing to understand is that this subroutine getChanges is frequently called 
# more than once.
# 
sub getChanges(%)
{
    my %pars = @_ ;
    my $long ;			# defined if -l flag
    my $filespec = "" ;		# file spec
    my $firstch = &P4CGI::CURRENT_CHANGE_LEVEL() ; # first change to look for
    my $maxch = 0 ;		# max no changes
    my $status="submitted" ;	# status
    my $label ;			# label
    my $rhash ;			# result
    my $select ;		# selection funtion
    my $lastch ;		# Last change parsed
    my $lastrch ;		# Last change parsed and returned
    my $linkedch ;              # linked ch ref
    my $userOpt = "" ;          # -u option to "changes"
    my $clientOpt = "" ;        # -c option to "changes"
    my $k ;
    foreach $k (keys %pars) {
	$k = lc($k) ;
	$k eq "-long"        and do { $long      = $pars{$k} ; next } ;
	$k eq "-file"        and do { $filespec  = $pars{$k} ; next } ;
	$k eq "-firstch"     and do { $firstch   = $pars{$k} ; next } ;
	$k eq "-maxch"       and do { $maxch     = $pars{$k} ; next } ;
	$k eq "-status"      and do { $status    = $pars{$k} ; next } ;
	$k eq "-label"       and do { $label     = $pars{$k} ; next } ;
	$k eq "-resultto"    and do { $rhash     = $pars{$k} ; next } ;
	$k eq "-select"      and do { $select    = $pars{$k} ; next } ;
	$k eq "-lastch"      and do { $lastch    = $pars{$k} ; next } ;
	$k eq "-lastrch"     and do { $lastrch   = $pars{$k} ; next } ;
	$k eq "-magiclinked" and do { $linkedch  = $pars{$k} ; next } ;
	$k eq "-user"        and do { $userOpt   = "-u $pars{$k} " ; next } ;
	$k eq "-client"      and do { $clientOpt = "-c $pars{$k} " ; next } ;
	
    } ;
    my $tmpLastch ;
    $lastch = \$tmpLastch unless defined $lastch ;
    $lastrch = \$tmpLastch unless defined $lastrch ;
    if($long) { $long = " -l " ; } else { $long = "" } ;
    
    if($label) {
	$filespec .= "\@$label" ;
	if ($firstch and ($firstch !=  &P4CGI::CURRENT_CHANGE_LEVEL())) {
	    $maxch += $firstch ;
	} ;
    }
    else {
	if ($firstch) {
	    $filespec .= "\@$firstch" ;
	} ;
    } ;
    if($maxch) { $maxch = " -m $maxch " ;} else { $maxch = "" ; } ;
    if($status eq "pending") {
	$filespec = "" ;
    } ;
    if($filespec =~ /\s/) {
	$filespec = "\"$filespec\"" ;
    } ;
    
    my $command = "changes ${clientOpt}${userOpt}$long -t -s $status $maxch $filespec" ;
    $command = "changes ${clientOpt}${userOpt}$long -s $status $maxch $filespec" if $serverY < 2003 ;
    
    my $chpattern = "Change (\\d+) on (\\S+ \\S+) by (\\w+)\\@(\\S+)" ;
    $chpattern = "Change (\\d+) on (\\S+) by (\\w+)\\@(\\S+)" if $serverY < 2003 ;
#    &P4CGI::ERRLOG("Patterm: $chpattern\n") ;
    
    local *P4 ;
    my $n = 0 ;
    &P4CGI::p4call(*P4,$command) ;
    $$lastrch = 0 ;
    while(<P4>) {
	chomp ;
	if(/$chpattern/) {
	    $n++ ;
	    my ($change,$date,$user,$client) = ($1,$2,$3,$4) ;
	    $$lastch = $change ;
	    my $desc = "" ;
	    if($long) {
		<P4> ;
		while(<P4>) {
		    chomp ;
		    last if length($_) == 0 ; 
		    s/^\t// ;
		    if(length($desc) > 0) {	$desc .="\n" ; } ;
		    $desc .= $_ ;
		}
#		&P4CGI::ERRLOG("select: $select") ;
		if(defined $select) {
		    next unless &$select($change,$date,$user,$client,\$desc) ;
		}
		my @ch; 
		
		$desc = &P4CGI::formatDescription($desc,\@ch) ;
		$desc =~ s/$MAGIC_RED(.*?)$MAGIC_RED/<font color=red>$1<\/font>/gis ;
		if(defined $linkedch and @ch > 0) {
		    $$linkedch{$change} = \@ch ;
		} ;
	    } ;
	    $$lastrch = $change ;
	    $$rhash{$change} = [$date,$user,$client,$desc] ;
	}
    }    
    close P4 ; 
    return $n ;
} ;
 
### get target ###
my %extraUrlOptions ;
if(&P4CGI::CHANGES_IN_SEPARATE_WIN()) {
    $extraUrlOptions{"-target"}="CHANGES" ;
}
###                ###
### Fix page title ###
###                ###
 
my $title = "List changes for" ;
if($STATUS eq "pending") {
    $title = "Pending changes for " ;
} ;
$title = "<table><tr><td class=\"PageTitle\">$title</td><td> </td><td class=\"PageTitle\"> " ;
 
if($FSPC_WasSpecified) {
    $title .= join(" and <br>",@FSPC) ;
    if(defined $LABEL) {
	$title .= "<br>and label $LABEL" ;
    }
}
else {
    $title .= "label $LABEL" ;
} ;
if(defined $EXLABEL) {
    $title .= "<br>excluding changes for label $EXLABEL" ;
}        
if(defined $CHOFFSET and $CHOFFSET > 0) {
    $title .= "<br><small>(offset $CHOFFSET from top)</small>" ;
} ;
if(defined $USER) {
    $title .= " <br>where user is: $USER" ;
} ;
if(defined $GROUP) {
    $title .= " <br>where group is: $GROUP" ; # 
} ;
if(defined $CLIENT) {
    $title .= "<br>where client is: $CLIENT" ; # 
} ;
if(defined $SEARCHDESC) {
    my $not="" ;
    if(defined $SEARCH_INVERT) {
	$not = " does not"
    }
    $title .= "<br>where description$not match: $SEARCHDESC" ;
} ;
$title .=" </td></tr></table>" ;
###                                 ###
### Get changes to exclude (if any) ###
###                                 ###
 
local *P4 ;
my %excludeChanges ;
my $f ;
my $lastChangeInLabel = 0 ;
if(defined $EXLABEL ) {
    getChanges(-label=>$EXLABEL,
	       -resultto=> \%excludeChanges) ;
    my $n = scalar keys(%excludeChanges) ;
    my @tmp = sort { $b <=> $a } keys %excludeChanges ;
    $lastChangeInLabel = $tmp[0] ;
    &P4CGI::ERRLOG("Exclude from label \"$EXLABEL\":$n lastCh:$lastChangeInLabel") ;	
 
} ;
 
###            ###
### Start page ###
###            ###
my @buttons ;
unless(defined $SHOWREFERENCED || ($STATUS eq "pending")) {    
    push @buttons,("<td>&nbsp;</td>",
		   &P4CGI::buttonCell(&P4CGI::cgi()->self_url . 
				      "&SHOWREFERENCED=Y",
				      "Append description of changes mentioned in a change description",
				      "Show related desc.")) ;
}
push @buttons,"<td>&nbsp;</td>" ;
if($STATUS eq "pending") {
    &P4CGI::cgi()->delete("STATUS") ;
    push @buttons, &P4CGI::buttonCell(&P4CGI::cgi()->url(-relative => 1,
							 -query => 1),
				      "Show submitted changes",
				      "Show submitted") ;
    &P4CGI::cgi()->param("STATUS","pending") ;    
}
else {
    &P4CGI::cgi()->param("STATUS","pending") ;    
    push @buttons, &P4CGI::buttonCell(&P4CGI::cgi()->url(-relative => 1,
							 -query => 1),
				      "Show pending changes",
				      "Show pending") ;
    &P4CGI::cgi()->delete("STATUS") ;    
} ;
 
push @buttons,&P4CGI::buttonCell("searchPattern.cgi",
				 "Search for submitted changes",
				 "FSPC=$filespec",
				 "Find changes") ;
 
 
###             ###
### Get changes ###
###             ###
my %changes ;
my $cchange = "0" ;
my $oldestSafeCh = 0 ;		# The last change in %changes that is "safe" (after this change changes
				# may be missing)
my $gotAll="No" ;		# Set to "Yes" if there are no more changes to display 
my %magicLinks ;
 
 
my @filespecdata ;
if(@FSPC) {
    push @filespecdata, "FSPC=".join(" ",@FSPC) ;
} ;
 
 
 
my %existingClients = &P4CGI::p4clients() ;
my %existingUsers = &P4CGI::p4users() ;
 
 
###
### If "pending" get all pending changes 
###
if($STATUS eq "pending") {
				# Pending. All file and label specifications ignored...
    $title = "Pending changes" ;
    my $choffstr = "" ;
    my %chs ;
    getChanges(-status => "pending",
	       -long => 1,
	       -resultto => \%chs) ;
    my $ch ;
    foreach $ch (sort { $b <=> $a } keys %chs) {	
	my ($date,$user,$client,$desc) = @{$chs{$ch}} ;
	my $dispUser = $user ;
	my $dispClient = $client ;
	if(length($dispUser)>25) {
	    $dispUser =~ s/(.{23}).*/$1\.\.\./ ;
	}
	if(length($dispClient)>25) {
	    $dispClient =~ s/(.{23}).*/$1\.\.\./ ;
	}
	
	$changes{$ch} = 
#	    "<tr><td colspan=5><hr class=\"Delimiter\"></td></tr>\n".
	    "<tr>\n".
	    "   <td class=\"ListHeadColumn\" rowspan=\"1\"> ". 
	    &P4CGI::ahref("-url" => "changeView.cgi",
			  %extraUrlOptions,
			  "CH=$ch",
			  @filespecdata,
			  "HELP=View change",
			  "$ch") . "</td>\n" ;
	$changes{$ch} .= "  <td class=\"List\">$date</td>\n" ;
	if(exists $existingUsers{$user}) {
	    $changes{$ch} .= 
		"  <td class=\"List\">".
		&P4CGI::ahref("-url" => "userView.cgi",
			      "USER=$user",
			      "HELP=View user info",
			      $user) . "</td>\n" ;
	}
	else {
	    $changes{$ch} .= 
		"  <td class=\"List\">$user</td>\n" ;
	} ;
	if(exists $existingClients{$client}) {
	    $changes{$ch} .= 
		"  <td class=\"List\">". 
		&P4CGI::ahref("-url" => "clientView.cgi",
			      "CLIENT=$client",
			      "HELP=View client info",
			      $client) . "</td>\n" ;
	}
	else {
	    $changes{$ch} .= 
		"  <td class=\"List\">$client</td>\n" ;	    
	} ;
	$changes{$ch} .= 
	    "  <td></td>\n" .
	    "</tr>\n" .
	    "<tr><td></td>\n" .
	    "  <td class=\"Description\" colspan=4>".
	    $desc .
	    "</td>\n</tr>\n" ;
    }			  
} 
###
### If not "pending" get all changes
###
else {
    my $max = $MAXCH ; # max
 
    ##
    ## Create subroutines for selection
    ##
    my @selectFuncs ; # Variable to hold subroutines
 
    if(defined $SEARCHDESC) {	# Search description
	$max = (1+$max)*10 ;
	my $s = "($SEARCHDESC)" ;
#	$s =~ s/\s*\+\s*/|/g ;
	$s =~ s/\./\\\./g ;
	$s =~ s/\*/.\*/g ;
	$s =~ s/\?/./g ;
	$s =~ s/\s+/((\\s+)|(\n))+/g ;
	my $sq = $s ;
	$sq =~ s/\n/\\n/g ;
	&P4CGI::ERRLOG("select: ".$sq) ;
	if(defined $SEARCH_INVERT) {
	    push @selectFuncs , sub { my ($ch,$date,$user,$client,$desc) = @_ ;
				      return $$desc !~ /$s/gi ;
				  } ;
	}
	else {
	    push @selectFuncs , sub { my ($ch,$date,$user,$client,$desc) = @_ ;
				      return $$desc =~ s/$s/$MAGIC_RED$1$MAGIC_RED/gi ;
				  } ;
	}
    } ;
    if(defined $GROUP) {	# Group(s) specified
	my @grps = split(',',$GROUP) ;
	while(@grps) {
	    my $grp = shift @grps ;
	    &P4CGI::ERRLOG("group: $grp") ;	
	    my %data ;
	    &P4CGI::p4readform("group -o '$grp'",\%data) ;
	    if(exists $data{"Subgroups"}) {
		push @grps,split("\n",$data{"Subgroups"}) ;
	    }
	    my $u ;
	    foreach $u (split("\n",$data{"Users"}))
	    {
		if(defined $USER) {
		    $USER .= ",$u";
		}
		else {
		    $USER = "$u" ;
		}
	    }
	}	
    }
    my $onlyUser ;
    if(defined $USER) {		# User(s) specified	
	my %users ;
	my $usersToCheck = 0 ;
	foreach (split(',',$USER)) {
	    $users{$_} = 1 ;
	    $usersToCheck++ ;
	}
	&P4CGI::ERRLOG("users: ".join(",",(keys %users))." to check:".$usersToCheck) ;	
	push @selectFuncs , sub { my ($ch,$date,$user,$client,$desc) = @_ ;	
				  return exists $users{$user} ;
			      } ;
        $onlyUser = $USER if $usersToCheck == 1 ;
	my %users = &P4CGI::p4users() ;
	my @users = keys  %users ;
	$max *= 3+int(@users/(5*$usersToCheck)) ;
    } ;     
    my $onlyClient ;
    if(defined $CLIENT) {	# Client specified
	my %clients ;
	my $clientsToCheck = 0 ;
	foreach (split(',',$CLIENT)) {
	    $clients{$_} = 1 ;
	    $clientsToCheck++ ;
	}
	&P4CGI::ERRLOG("client: $CLIENT") ;	
	push @selectFuncs , sub { my ($ch,$date,$user,$client,$desc) = @_ ;	
				  return exists $clients{$client} ;
			      } ; 
        $onlyClient = $CLIENT if $clientsToCheck == 1 ;
	my %clients = &P4CGI::p4clients() ;
	my @clients = keys %clients ;
	$max *= 3+int(@clients/(5*$clientsToCheck)) ;
    } ;     
    if((keys %excludeChanges) > 0) { # Exclude changes from a list
	push @selectFuncs , sub { my ($ch,$date,$user,$client,$desc) = @_ ;	
				  return ! exists $excludeChanges{$ch} ;
			      } ; 	
    }
    ##
    ## Create a select subroutine for selection functions defined (if any)
    ##
    my $selectFunc ;
    if(@selectFuncs > 0) {
	$selectFunc = sub {
	    my @params = @_ ;
	    foreach (@selectFuncs) {
		return undef unless &$_(@params) ;
	    }
	    return 1 ;
	}
    }    
 
    ##
    ## Set max changes to return for each search
    ##
    $max = 200 if $max < 200 ; # There is no point searching less than 200 at the time.
                               # For a fast LAN this can be increased to 2000
 
    my %chLevel ; # Store how far back we have traced by file spec
    my %ended   ; # Set to true for a file spec where we have hit the end
				# HINT: We can merge changes from more than one file spec
    my $noFSPCsNotEnded = 0 ; # Store number of file speces that has not ended (so we know
			      # when there is no point to keep trying)
    
    ##
    ## Initialize variable above
    ##
    my $firstch = &P4CGI::CURRENT_CHANGE_LEVEL() ; # First change we are interested in
    $firstch = $FIRSTCH if defined $FIRSTCH ; # Set if parameter FIRSTCH given
       
    my $fspc ;    
    foreach $fspc (@FSPC) {
	$chLevel{$fspc} = $firstch ; # Set level to current for all filespec's
	$ended{$fspc}   = 0 ;	     # Not ready with flespec yet...
	$noFSPCsNotEnded++ ;	     # Increment filespecs not ready
    }
 
    my %chs ; # result hash
    
    while(1) {			# Loop until ready
 
	##
	## Loop over each file spec
	##
	$oldestSafeCh = 0 ; 
	my $filespec ;		
	foreach $filespec (@FSPC) { # for each filespec.....
	    next if $ended{$filespec} ; # Skip if all changes read for file spec
	    my $lastIncludedCh ; # Store last change included in selection
	    #
	    # Set up parameters for getChanges()
	    #
	    my %params = (-file     => $filespec ,
			  -resultto => \%chs,
			  -long     => 1,
			  -maxch    => $max+1,
			  -select   => $selectFunc,
			  -lastch   => \$chLevel{$filespec},
			  -lastrch  => \$lastIncludedCh,
			  -firstch  => $chLevel{$filespec},
			  -magiclinked => \%magicLinks ) ;
	    if($serverY >= 2001 and $serverN >= 2) {
		$params{"-user"} = $onlyUser if defined $onlyUser ;
		$params{"-client"} = $onlyClient if defined $onlyClient ;
	    } ;
	    if(defined $LABEL) {
		$params{"-label"} = $LABEL ;
	    }
	    #
	    # Call getChanges
	    #
	    my $gotCh = getChanges(%params) ;
	    #
	    # Evaluate returned data
	    #
	    if($gotCh != ($max+1)) {     # Did we get all changes we asked for? If no....
		$ended{$filespec} = 1 ;	 # ... there is no more data for this file spec
		$noFSPCsNotEnded-- ;
		&P4CGI::ERRLOG("file spec \"$filespec\" ended") ;	
	    }
	    else {
		if($lastIncludedCh > $oldestSafeCh) { # Update oldes safe ch. 
		    $oldestSafeCh = $lastIncludedCh ;
		}
	    }
	} # End loop over each filespec
	
	if($noFSPCsNotEnded == 0) { # Did we get all changes there are for the filespecs?
	    # No more changes for these filespecs
	    $gotAll = "Yes" ;
	    last ;
	}
				# Count number of changes that we can "trust" (for more than
				# one file spec we reach different number of changes back in time)
	my $okchs = 0 ;
	my $c ;
	foreach $c (keys %chs) {
	    $okchs++ if $c >= $oldestSafeCh ;
	}
	&P4CGI::ERRLOG("okchs: $okchs, max: $max") ;
	last if $okchs >= $MAXCH ; # Did we get enough changes...
    }
    
    ##
    ## Build data for changes to display
    ##
    my $changesDisplayed=0 ;
    my $ch ;
    my @sorted = sort { $b <=> $a } keys %chs ;
    while($ch = shift(@sorted)) {	
	if((exists $changes{$ch}) or (defined $FIRSTCH and ($ch > $FIRSTCH))) {
	    &P4CGI::ERRLOG("skip ch $ch") ;
	}
	else {	    
	    my ($date,$user,$client,$desc) = @{$chs{$ch}} ;
	    my $dispUser = $user ;
	    my $dispClient = $client ;
	    if(length($dispUser)>25) {
		$dispUser =~ s/(.{23}).*/$1\.\.\./ ;
	    }
	    if(length($dispClient)>25) {
		$dispClient =~ s/(.{23}).*/$1\.\.\./ ;
	    }
	    $changes{$ch} = 
#		"<tr><td colspan=5><hr class=\"Delimiter\"></td></tr>\n".
		"<tr>\n".
		"   <td class=\"ListHeadColumn\" rowspan=\"1\"> ". 
		&P4CGI::ahref("-url" => "changeView.cgi",
			      %extraUrlOptions,
			      "CH=$ch",
			      @filespecdata,
			      "HELP=View change $ch",
			      "$ch:") . "</td>\n" ;
	    $changes{$ch} .= "  <td class=\"List\">$date</td>\n" ;
	    if(exists $existingUsers{$user}) {
		$changes{$ch} .=
		    "  <td class=\"List\">".
		    &P4CGI::ahref("-url" => "userView.cgi",
				  "USER=$user",
				  "HELP=View user $user",
				  $dispUser) . "</td>\n" ;
	    }
	    else {
		$changes{$ch} .= "  <td class=\"List\">$user</td>\n" ;
	    } ;
	    if(exists $existingClients{$client}) {
		$changes{$ch} .= 
		    "  <td class=\"List\">". 
		    &P4CGI::ahref("-url" => "clientView.cgi",
				  "CLIENT=$client",
				  "HELP=View client $client",
				  $dispClient) . "</td>\n" ;
	    }
	    else {
		$changes{$ch} .= 
		    "  <td class=\"List\">$dispClient</td>\n" ;
	    } ;
	    $changes{$ch} .= 
		"  <td></td>\n" .
		"</tr>\n" .
		"<tr><td></td>\n" .
		"  <td class=\"Description\" colspan=4>$desc</td>\n</tr>\n" ;
	    $changesDisplayed++ ;
	    if(defined $SHOWREFERENCED and exists $magicLinks{$ch}) {
		my $refch = "" ;
		my $n = 0 ;
		my $c ;
		foreach $c (@{$magicLinks{$ch}}) {
		    my %data ;
		    &P4CGI::p4readform("change -o '$c'",\%data) ;
		    if(exists $data{"Description"}) {
			$n++ ;
			my $d =&P4CGI::formatDescription($data{"Description"});
			$c =  &P4CGI::ahref("-url" => "changeView.cgi",
					    %extraUrlOptions,
					    "CH=$c",
					    @filespecdata,
					    "HELP=View change $c",
					    "$c") ;
			$refch .= 
			    "    <td class=\"List\">$c:</td>\n" .
			    "    <td class=\"Description\">$d</td>\n" .
			    "  </tr>\n" ;
		    }
		}				
		if($n > 0) {
		    $changes{$ch} .= 
			"<tr>\n" .
			"  <td></td>\n" .
			"  <td colspan=4>\n".
			"    <table class=\"SubChange\">\n". ## FIX!
			"    <tr>\n".
			"$refch" .
			"  </table>\n".
			"</tr>\n" ;
		}
	    }
	}
	if($changesDisplayed == $MAXCH) {
	    if(@sorted > 0) {
		$gotAll = "No" ;
	    }
	    last ;
	}
    }			  
} ;
 
###             ###
### Start print ###
###             ###
 
print &P4CGI::start_page($title,@buttons) ;
 
my $debug_size = scalar keys %changes ;
&P4CGI::ERRLOG("$debug_size changes to display") ;
my $ch ;
my $maxch = $MAXCH ;
my $lastch = 1 ;
#my $skipped = 0 ;
{
    my $chs = keys %changes ;
    if($chs >= $maxch) {
	if(defined $CHOFFSET and $CHOFFSET > 0) {
	    $chs = "$maxch next" ;
	}
	else {
	    $chs = "$maxch most recent" ;
	}
    }
    my $changes = "changes" ;
    #$changes = "change" if $chs == 1 ;
    print &P4CGI::start_framedTable("$chs $changes:") ;
} ;
 
print "<table class=\"ListX\">\n" ;
print P4CGI::table_header("#",
			  "Date and time",
			  "User",
			  "Client") ;
 
foreach $ch (sort { $b <=> $a }  keys %changes) {    
    last if ($maxch == 0) ;
    if($ch < $oldestSafeCh) { # Can not happend???
	&P4CGI::ERRLOG("ch:$ch oldestSafeCh:$oldestSafeCh") ; # DEBUG
	$maxch = 0 ;
	last ;
    } ;
    $maxch-- ;
    $lastch=$ch-1 ;
    $CHOFFSET++ ;
    if(defined $EXLABEL and $ch < $lastChangeInLabel) {
	print
	    "<tr>" ,
	    "   <td colspan=5>" ,
	    "   <table width=90% align=center cols=3>\n" ,
	    "   <tr>\n" ,
	    "     <th><hr>Last change in Label $EXLABEL is $lastChangeInLabel<hr>",
	    "     </th>" ,
	    "   </tr>" ,
	    "   </table>",
	    "</tr>\n" ;
	$lastChangeInLabel = 0 ;
    }
    print $changes{$ch} ;
}	
 
print "</table>\n" ;
print &P4CGI::end_framedTable() ;
 
&P4CGI::ERRLOG("gotAll:$gotAll maxch:$maxch") ;
if(($maxch == 0) and ($gotAll ne "Yes")) {
    my @params = ("STATUS=$STATUS",
		  "FIRSTCH=$lastch",
		  "CHOFFSETDISP=$CHOFFSET",
		  "MAXCH=$MAXCH") ;
    if(defined $EXLABEL) {
	push @params,"EXLABEL=$EXLABEL" ;
    } ;
    if(defined $LABEL) {
	push @params,"LABEL=$LABEL" ;
    } ;
    if(defined $USER) {
	push @params,"USER=$USER" ;
    } ;
    if(defined $GROUP) {
	push @params,"GROUP=$GROUP" ;
    } ;
    if(defined $SEARCHDESC) {
	push @params,"SEARCHDESC=$SEARCHDESC" ;
    } ;
    if(defined $SEARCH_INVERT) {
	push @params,"SEARCH_INVERT=1" ;
    } ;
    if(defined $SHOWREFERENCED) {
	push @params,"SHOWREFERENCED=$SHOWREFERENCED" ;
    } ;
    if($FSPC_WasSpecified) {
	push @params,"FSPC=".P4CGI::cgi()->param("FSPC") ;
    }
    
    print
	&P4CGI::buttonHMenuTable(&P4CGI::buttonCell("changeList.cgi",
						    "Show next set of changes",
						    @params,
						    "More....")) ;
}
 
 
print "",&P4CGI::end_page();
 
#
# That's all folks
#