#!/usr/bin/perl
#
#  Main authors:
#     Christian Schulte <schulte@gecode.org>
#
#  Contributing authors:
#     Mikael Lagerkvist <lagerkvist@gecode.org>
#
#  Copyright:
#     Christian Schulte, 2005
#     Mikael Lagerkvist, 2008
#
#  This file is part of Gecode, the generic constraint
#  development environment:
#     http://www.gecode.org
#
#  Permission is hereby granted, free of charge, to any person obtaining
#  a copy of this software and associated documentation files (the
#  "Software"), to deal in the Software without restriction, including
#  without limitation the rights to use, copy, modify, merge, publish,
#  distribute, sublicense, and/or sell copies of the Software, and to
#  permit persons to whom the Software is furnished to do so, subject to
#  the following conditions:
#
#  The above copyright notice and this permission notice shall be
#  included in all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
#  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
#  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
#  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
#  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
#  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
#  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
#

#
# Compile changelog
#

$first   = 1;
$version = "";
$moreinfocnt = 1;
$info    = "";

$modclear{"kernel"} = "Kernel";
$modclear{"search"} = "Search engines";
$modclear{"int"} = "Finite domain integers";
$modclear{"set"} = "Finite integer sets";
$modclear{"float"} = "Floats";
$modclear{"cpltset"} = "Finite integer sets with complete representation";
$modclear{"minimodel"} = "Minimal modeling support";
$modclear{"graph"} = "\%Graph constraints";
$modclear{"scheduling"} = "Scheduling constraints";
$modclear{"driver"} = "Script commandline driver";
$modclear{"iter"} = "Range and value iterators";
$modclear{"support"} = "Support algorithms and datastructures";
$modclear{"example"} = "\%Example scripts";
$modclear{"test"} = "Systematic tests";
$modclear{"gist"} = "Gist";
$modclear{"flatzinc"} = "Gecode/FlatZinc";
$modclear{"other"} = "General";

$whatclear{"bug"} = "Bug fixes";
$whatclear{"performance"} = "Performance improvements";
$whatclear{"documentation"} = "Documentation fixes";
$whatclear{"new"} = "Additions";
$whatclear{"removed"} = "Removals";
$whatclear{"change"} = "Other changes";

$rankclear{"minor"} = "minor";
$rankclear{"major"} = "major";

@modorder = ("kernel","search","int","set","float","cpltset","scheduling",
	     "graph","minimodel","driver",
	     "iter","support","example","test","gist","flatzinc","other");

@whatorder = ("new","removed","change","bug","performance","documentation");

foreach $mod (@modorder) {
  $hastext{$mod} = 0;
  foreach $what (@whatorder) {
    $text{"$mod-$what"} = "";
  }
}

$versions = "";
$body = "";

while ($l = <>) {
 LINE:
  next if ($l =~ /^\#/);
  if ($l =~ /^\[RELEASE\]/) {
    # Print previous
    if (!$first) {
      $sid = "SectionChanges_$version";
      $sid =~ s|\.|_|g;
      $versions = $versions . "\n - \\ref $sid \"Gecode $version ($date)\"";
      $body = $body."\\section $sid Changes in Version $version ($date)\n\n";

      $body = $body."$info\n\n";

      foreach $mod (@modorder) {
	if ($hastext{$mod}) {
	  $body = $body." - " . $modclear{$mod} . "\n";
	  $hastext{$mod} = 0;
	  foreach $what (@whatorder) {
	    if (!($text{"$mod-$what"} eq "")) {
	      $body = $body."   - " . $whatclear{$what} . "\n";
	      $body = $body.$text{"$mod-$what"};
	      $text{"$mod-$what"} = "";
	      $body = $body."      .\n";
	    }
	  }
	  $body = $body."   .\n";
	}
      }
      $body = $body."\n\n";
    }
    $first   = 0;
    $version = "";
    $info    = "";
    $date    = "";
    while (($l = <>) && !($l =~ /\[DESCRIPTION\]/)) {
      if ($l =~ /Version:[\t ]*(.*)$/) {
	$version = $1;
      } elsif ($l =~ /Date:[\t ]*(.*)$/) {
	$date    = $1;
      }
    }
    while (($l = <>) && !($l =~ /\[ENTRY\]/)) {
      $info = $info . $l;
    }
    goto LINE;
  }
  if ($l =~ /^\[ENTRY\]/) {
    my $mod, $what, $rank, $bug, $issue, $desc, $more, $thanks, $author;
    $desc = "";
    $more = "";
    $bug = "";
    $issue = "";
    $rank = "";
    $what = "";
    $mod = "";
    $thanks = "";
    $author = "";
    while (($l = <>) && !($l =~ /\[DESCRIPTION\]/)) {
      if ($l =~ /Module:[\t ]*(.*)$/) {
	$mod  = $1;
      } elsif ($l =~ /What:[\t ]*(.*)$/) {
	$what = $1;
      } elsif ($l =~ /Rank:[\t ]*(.*)$/) {
	$rank = $1;
      } elsif ($l =~ /Bug:[\t ]*(.*)$/) {
	$bug  = $1;
      } elsif ($l =~ /Issue:[\t ]*(.*)$/) {
	$issue  = $1;
      } elsif ($l =~ /Thanks:[\t ]*(.*)$/) {
	$thanks  = $1;
      } elsif ($l =~ /Author:[\t ]*(.*)$/) {
	$author  = $1;
      }
    }

    while (($l = <>) &&
	   !(($l =~ /\[ENTRY\]/) || ($l =~ /\[RELEASE\]/) || ($l =~ /\[MORE\]/))) {
	$desc = $desc . "        " . $l;
    }
    $desc =~ s/^        //;
    $desc =~ s/[ \t\n\r]*$//;
    $desc =~ s/</\\</g;
    $desc =~ s/>/\\>/g;
    $desc =~ s/&/\\&/g;
    $desc =~ s/\n([ \t]*)\n/\n\1<br>\n/g;
    if ($l =~ /^\[MORE\]/) {
	while (($l = <>) &&
	       !(($l =~ /\[ENTRY\]/) || ($l =~ /\[RELEASE\]/))) {
	    $more = $more . "        " . $l;
	}
    }
    $more =~ s/[ \t\n\r]*$//;
    $more =~ s/</\\</g;
    $more =~ s/>/\\>/g;
    $more =~ s/</\\</g;
    $more =~ s/&/\\&/g;
    $more =~ s/\n([ \t]*)\n/\n\1<br>\n/g;
    $hastext{$mod} = 1;
    $rb = $rankclear{$rank};
    if (!($issue eq "")) {
      $rb = $rb . ", <a href=\"https://github.com/gecode/gecode/issues/$issue\">issue $issue</a>";
    }
    if (!($thanks eq "")) {
      $rb = $rb . ", thanks to $thanks";
    }
    if (!($author eq "")) {
      $rb = $rb . ", contributed by $author";
    }
    if (!($more eq "")) {
	$more =~ s/^        //;
	$more =~ s/[ \t\n\r]*$//;
	$more =
	    "        <span id=lesslink" . $moreinfocnt . " style=\"display: inline\">\n" .
	    "        <a href=\"javascript:showInfo(" . $moreinfocnt . ", true)\">Details</a></span>\n" .
	    "        <span id=morelink" . $moreinfocnt . " style=\"display: none\">\n" .
	    "        <a href=\"javascript:showInfo(" . $moreinfocnt . ", false)\">Hide details</a></span>\n" .
	    "        <div id=moreinfo" . $moreinfocnt . " style=\"display: none\">\n" .
	    "        ". $more . "\n</div>\n";
	$moreinfocnt = $moreinfocnt + 1;
    }

    $text{"$mod-$what"} =
      ($text{"$mod-$what"} . "      - $desc (" . $rb . ")\n"
       . $more);
    goto LINE;
  }
}

print <<EOF
/**

\\page PageChange Changelog

\\section SectionChangeList Changes in Gecode Versions

$versions
 - \\ref SectionChanges_1_0_0 "Gecode 1.0.0 (2005-12-06)"

\\section SectionChangeWhat Gecode Version Numbers

%Gecode version numbers <em>x</em>.<em>y</em>.<em>z</em> change
according to the following rules (of thumb):

 - when \\e z changes, the programming interfaces for
   \\ref TaskModel, and \\ref TaskSearch remain
   stable and only minor additions or improvements are included.
 - when \\e y changes, the above mentioned interfaces might have changed
   and medium to major additions or improvements are included.
 - the change of \\e x is reserved for radical changes to %Gecode.

EOF
;

print $body;
print <<EOF
\\section SectionChanges_1_0_0 Changes in Version 1.0.0 (2005-12-06, initial release)

No changes, of course.

EOF
;
print "\n\n*/\n";