#! /usr/bonsaitools/bin/perl
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public License
# Version 1.1 (the "License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
# License for the specific language governing rights and limitations
# under the License.
#
# The Original Code is Tinderbox
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are Copyright (C) 1999
# Netscape Communications Corporation. All Rights Reserved.
#
# Contributor(s): Chris McAfee <mcafee@netscape.com>

#
# pageloader.pl - Process pageloader data from jrgm's pageloader tool.
#   Write data to $tree/pageloader.dat in the following format,
#
#  <logfilename>|<average pageload time>|<max pageload time>
#

sub usage {
  warn "./pageloader.pl <tree> <logfile>";
}

use FileHandle;

# This is for gunzip (Should add a configure script to handle this).
$ENV{PATH} .= ":/usr/local/bin";

unless ($#ARGV == 1) {
  &usage;
  die "Error: Wrong number of arguments\n";
}

($tree, $logfile) = @ARGV;

die "Error: No tree named $tree" unless -r "$tree/treedata.pl";
require "$tree/treedata.pl";

# Seach the build log for the pageloader data
#
$fh = new FileHandle "gunzip -c $tree/$logfile |" 
  or die "Unable to open $tree/$logfile\n";
my $pageloader_time = 0;
$pageloader_time = find_pageloader_data($fh);
$fh->close;

die "No pageloader data found in log.\n" unless $pageloader_time;

print "pageloader_time = $pageloader_time\n";

# Save the pageloader data to 'pageloader.dat'
#
open PAGELOADER, ">>$tree/pageloader.dat" or die "Unable to open $tree/pageloader.dat";
print PAGELOADER "$logfile|$pageloader_time\n";
close PAGELOADER;


# end of main
#============================================================

sub find_pageloader_data {
  my ($fh) = $_[0];
  local $_;
  my $inPageloaderStats = 0;

  # Search for "Starting Page Load Test" token, then
  # start looking for "_x_x_mozilla_page_load".  bloat.pl
  # does this, I think there was some attempt at being
  # smart about how the logs get parsed, not sure if this
  # is needed now.
  while (<$fh>) {
    if ($inPageloaderStats and /^  _x_x_mozilla_page_load/) {
      # Line format:
      #  _x_x_mozilla_page_load,<average>,<max>,<min>
      #  
      chomp;
      print "\$_ = $_\n";
      @findLine = split(/,/,$_);

      # Pick off 2nd item, average
      return $findLine[1];
    } elsif (not $inPageloaderStats and /^  Starting Page Load Test/) {
      $inPageloaderStats = 1;
    }
  }
  return ();
}