#!c:\perl\bin\perl
# 
# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# 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 Mozilla Communicator client code, released
# March 31, 1998.
#
# The Initial Developer of the Original Code is
# Netscape Communications Corporation.
# Portions created by the Initial Developer are Copyright (C) 1998-1999
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#   Sean Su <ssu@netscape.com>
#
# Alternatively, the contents of this file may be used under the terms of
# either of the GNU General Public License Version 2 or later (the "GPL"),
# or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****

#
# This perl script parses the input file for special variables
# in the format of $Variable$ and replace it with the appropriate
# value(s).
#
# Input: .jst file              - which is a .js template
#        default version        - a date in the form of:
#                                 major.minor.release.yyyymmdyhr
#                                 ie: 5.0.0.1999120910
#        component staging path - path to where the components are staged at
#
#        ie: perl makejs.pl xpcom.jst 5.0.0.99256
#

use File::Copy;
use File::Basename;
use Cwd;

# Make sure there are at least three arguments
if($#ARGV < 2)
{
  die "usage: $0 <.jst file> <default version> <staging path>

       .jst file              : .js template input file
       default version        : default julian base version number to use in the
                                form of: major.minor.release.yydoy
                                ie: 5.0.0.99256
       component staging path : path to where this component is staged at
                                ie: z:/stage/windows/32bit/en/5.0/xpcom
       \n";
}

$DEPTH = "../../..";
$topsrcdir        = GetTopSrcDir();
$inJstFile        = $ARGV[0];
$inVersion        = $ARGV[1];
$inStagePath      = $ARGV[2];

# get environment vars
$userAgent        = $ENV{WIZ_userAgent};
$userAgentShort   = $ENV{WIZ_userAgentShort};
$xpinstallVersion = $ENV{WIZ_xpinstallVersion};
$nameCompany      = $ENV{WIZ_nameCompany};
$nameProduct      = $ENV{WIZ_nameProduct};
$nameProductInternal = $ENV{WIZ_nameProductInternal};
$fileMainExe      = $ENV{WIZ_fileMainExe};
$fileMainIco      = $ENV{WIZ_fileMainIco};
$fileUninstall    = $ENV{WIZ_fileUninstall};
$greBuildID       = $ENV{WIZ_greBuildID};
$greFileVersion   = $ENV{WIZ_greFileVersion};
$greUniqueID      = $ENV{WIZ_greUniqueID};

# Get the name of the file replacing the .jst extension with a .js extension
@inJstFileSplit   = split(/\.jst/,$inJstFile);
$outJsFile        = $inJstFileSplit[0];
$outJsFile       .= ".js";
$outTempFile      = $inJstFileSplit[0];
$outTempFile     .= ".template";
$foundLongFiles   = 0;

print " copy \"$topsrcdir/xpinstall/packager/common/share.t\" $outTempFile\n";
os2copy("$topsrcdir/xpinstall/packager/common/share.t", "$outTempFile");
system("cat $inJstFile >> $outTempFile");

# Open the input .template file
open(fpInTemplate, $outTempFile) || die "\ncould not open $outTempFile: $!\n";

# Open the output .js file
open(fpOutJs, ">$outJsFile") || die "\nCould not open $outJsFile: $!\n";

# While loop to read each line from input file
while($line = <fpInTemplate>)
{
  if($line =~ /\$SpaceRequired\$/i) # For each line read, search and replace $SpaceRequired$ with the calculated size
  {
    $spaceRequired = 0;

    # split read line by ":" deliminator
    @colonSplit = split(/:/, $line);
    if($#colonSplit > 0)
    {
      @semiColonSplit = split(/;/, $colonSplit[1]);
      $subDir         = $semiColonSplit[0];
      $spaceRequired  = GetSpaceRequired("$inStagePath/$subDir");
      $line =~ s/\$SpaceRequired\$:$subDir/$spaceRequired/i;
    }
    else
    {
      $spaceRequired = GetSpaceRequired("$inStagePath");
      $line =~ s/\$SpaceRequired\$/$spaceRequired/i;
    }
  }
  else
  {
    $line =~ s/\$Version\$/$inVersion/i;
    $line =~ s/\$UserAgent\$/$userAgent/i;
    $line =~ s/\$UserAgentShort\$/$userAgentShort/i;
    $line =~ s/\$XPInstallVersion\$/$xpinstallVersion/i;
    $line =~ s/\$CompanyName\$/$nameCompany/i;
    $line =~ s/\$ProductName\$/$nameProduct/i;
    $line =~ s/\$ProductNameInternal\$/$nameProductInternal/gi;
    $line =~ s/\$MainExeFile\$/$fileMainExe/i;
    $line =~ s/\$MainIcoFile\$/$fileMainIco/i;
    $line =~ s/\$UninstallFile\$/$fileUninstall/i;
    $line =~ s/\$GreBuildID\$/$greBuildID/gi;
    $line =~ s/\$GreFileVersion\$/$greFileVersion/gi;
    $line =~ s/\$GreUniqueID\$/$greUniqueID/gi;
  }

  print fpOutJs $line;
}

close(fpInTemplate);
close(fpOutJs);
exit(0);

sub GetSpaceRequired()
{
  my($inPath) = @_;
  my($spaceRequired);

  print "   calculating size for $inPath\n";
  $spaceRequired    = GetSpaceRequired2($inPath);
  $spaceRequired    = int($spaceRequired / 1024);
  $spaceRequired   += 1;
  return($spaceRequired);
}

sub ParseUserAgentShort()
{
  my($aUserAgent) = @_;
  my($aUserAgentShort);

  @spaceSplit = split(/ /, $aUserAgent);
  if($#spaceSplit >= 0)
  {
    $aUserAgentShort = $spaceSplit[0];
  }

  return($aUserAgentShort);
}

sub GetTopSrcDir
{
  my($rootDir) = dirname($0) . "/$DEPTH";
  my($savedCwdDir) = cwd();

  chdir($rootDir);
  $rootDir = cwd();
  chdir($savedCwdDir);
  return($rootDir);
}

sub os2copy
{
  my($source, $dest) = @_;
  system("cp $source $dest");
  return 1;
}

##
# GetSpaceRequired2
#
# Finds the space used by the contents of a dir by recursively
# traversing the subdir hierarchy and counting individual file
# sizes
#
# @param   targetDir  the directory whose space usage to find
# @return  spaceUsed  the number of bytes used by the dir contents
# @author  sgehani@netscape.com
##
sub GetSpaceRequired2()
{
    my($targetDir) = $_[0];
    my($spaceUsed) = 0;
    my(@dirEntries) = ();
    my($item) = "";

    @dirEntries = <$targetDir/*>;

    # iterate over all dir entries 
    foreach $item ( @dirEntries ) 
    {
        # if dir entry is dir
        if (-d $item)
        {       
            # add GetSpaceRequired(<dirEntry>) to space used
            $spaceUsed += GetSpaceRequired2($item);
        }
        # else if dir entry is file
        elsif (-e $item)
        {
            # add size of file to space used
            $spaceUsed += (-s $item);
        }
    }

    return $spaceUsed;
}