#!/bin/bash
#
# Copyright 2006-2009  Michael Shulze
# Copyright 2006-2009  Jon Grosshart
# All Rights Reserved.
#
# Redistribution and use of this script, with or without modification, is 
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

CWD=`pwd`
VERSION=X11R7.4
BASEVER=`echo $VERSION | sed 's/X11R//'`
URL=http://xorg.freedesktop.org/releases
RELEASE=$URL/$VERSION/src/
INDIVIDUAL=$URL/individual
XCB=http://xcb.freedesktop.org/dist/
DOWNLOADSOURCE=yes
REMOVETMP=yes
# Define a static version for the xcb's
# FYI, Newer proto wants python.
LIBXCB=1.1
XCBPROTO=1.1
# I'm looking for i*86.
TARGET=$(gcc -dumpmachine | sed 's/-.*//')
# Lets have an option to override the xorg-server version
[[ $BASEVER == 7.3 ]] && XSERVER=1.4.2
[[ $BASEVER == 7.4 ]] && XSERVER=1.5.3
# START with a clean TMP directory:
rm -rf $CWD/$VERSION/tmp.*
# wget
WGET="wget"

#########################################################################
# Begin Changelog
#
# FYI, I'm not testing on anything other than x86...

# This function is for anything you don't want to build;
# including, but not limited to, the $RELEASE directory.
function dont_build() {
    # Deprecated.
    [[ $BASEVER > 7.1 ]] && \
    echo "mkcfm
xkbdata" >> dont-build
    # 7.3 additions:
    # i810 was obsoleted by intel
    [[ $BASEVER > 7.2 ]] && \
    echo "xf86-video-i810" >> dont-build
    # These are new.
    [[ $BASEVER < 7.3 ]] && \
    echo "xbacklight
pixman
xf86-video-intel
xf86-video-glide
xf86-video-vermilion" >> dont-build
    # 7.4 additions:
    # amd was obsoleted by geode
    [[ $BASEVER > 7.3 ]] && \
       echo "xf86-video-amd" >> dont-build
    # mach64 and r128 were split from the ati driver...
    # The rest are new(ish).
    [[ $BASEVER < 7.4 ]] && \
       echo "libpciaccess
xf86-video-mach64
xf86-video-r128
xf86-video-openchrome
xf86-input-synaptics
xf86-video-geode
xf86-video-xgi
xf86-video-xgixp
xinput
dri2proto" >> dont-build

    ######################################################
    # General Tweaks. Not Version Related:
    # Let's take the opportunity to weed out some drivers:
    # If your on a sun platform, comment the below...
    echo "xf86-video-sunbw2
xf86-video-suncg14
xf86-video-suncg3
xf86-video-suncg6
xf86-video-sunffb
xf86-video-sunleo
xf86-video-suntcx" >> dont-build
    # Solaris/BSD
    echo "xf86-video-wsfb" >> dont-build
    # non-x86 cachectl.h - SGI Octane
    echo "xf86-video-impact" >> dont-build
    # These are Apple and Windows related:
    echo "applewmproto
windowswmproto
libAppleWM
libWindowsWM" >> dont-build
    # Seems to be x86 only on the build. Maybe {_64} too.
    [[ $TARGET != i*86 ]] && \
    echo "xf86-input-vmmouse" >> dont-build
    
}

function fix() {
   if [ "$BASEVER" = "7.3" ]; then
      # These drivers are just plain broken and need to be updated.
      if [ "$series" = "driver" ]; then
	 sed -i 's/xf86-input-acecad-1.2.0/xf86-input-acecad-1.2.1/' final.ver
	 sed -i 's/xf86-input-calcomp-1.1.0/xf86-input-calcomp-1.1.1/' final.ver
	 sed -i 's/xf86-input-citron-2.2.0/xf86-input-citron-2.2.1/' final.ver
	 sed -i 's/xf86-input-dmc-1.1.0/xf86-input-dmc-1.1.1/' final.ver
	 sed -i 's/xf86-input-dynapro-1.1.0/xf86-input-dynapro-1.1.1/' final.ver
	 sed -i 's/xf86-input-elo2300-1.1.0/xf86-input-elo2300-1.1.1/' final.ver
	 sed -i 's/xf86-input-evdev-1.1.2/xf86-input-evdev-1.2.0/' final.ver
	 sed -i 's/xf86-input-magellan-1.1.0/xf86-input-magellan-1.1.1/' final.ver
	 sed -i 's/xf86-input-microtouch-1.1.0/xf86-input-microtouch-1.1.1/' final.ver
	 sed -i 's/xf86-input-penmount-1.2.0/xf86-input-penmount-1.2.1/' final.ver
	 sed -i 's/xf86-input-spaceorb-1.1.0/xf86-input-spaceorb-1.1.1/' final.ver
	 sed -i 's/xf86-input-vmmouse-12.4.1/xf86-input-vmmouse-12.4.3/' final.ver
	 sed -i 's/xf86-input-void-1.1.0/xf86-input-void-1.1.1/' final.ver
	 # No glide.h
	 sed -i "/^xf86-video-glide/d" final.ver
      fi
   fi
   if [ "$BASEVER" = "7.4" ]; then
      if [ "$series" = "proto" ]; then
	 # This was updated on the release page but not in the source directory:
	 sed -i 's/randrproto-1.2.1/randrproto-1.2.2/' final.ver
      fi
      if [ "$series" = "driver" ]; then
	 # Still no companion proto module & mesa doesn't ship it.
         sed -i "/^xf86-video-glide/d" final.ver
	 # http://lists.freedesktop.org/archives/xorg/2008-July/036911.html
	 sed -i "/^xf86-video-cyrix/d" final.ver
	 sed -i "/^xf86-video-imstt/d" final.ver
	 sed -i "/^xf86-video-vermilion/d" final.ver
	 sed -i "/^xf86-video-via/d" final.ver
	 # Upgrade this. Anything newer requires GEM. Anything
	 # less uses XF86DRI_MM. Be on the lookout for a new libdrm.
	 sed -i 's/xf86-video-intel-2.4.2/xf86-video-intel-2.4.98.0/' final.ver
	 # Not sure what's up with this one.
	 sed -i "/^xf86-video-xgixp/d" final.ver
      fi
   fi
}
# End Changelog
####################################################################

#########################################
# Don't change anything below this line #
#########################################

function grab_latest() {
    local LATEST              # will eventually contain the latest archive
    local -a LATEST_VER=( 0 ) # and its version, fields separated in an array
    while read CURRENT
    do

      # split version information into an array
      local -a VER=( $(echo $CURRENT | 
	  sed -r 's/^.*-([[:digit:].]+)\.tar\.gz/\1/;s/\./ /g') )

      # iterate over fields of that array
      for (( i=0; i < ${#VER[*]}; i++ ))
      do
	# compare current field and replace LATEST if appropriate
	if (( VER[i] != LATEST_VER[i] ))
	then
	    if (( VER[i] > LATEST_VER[i] ))
	    then
		LATEST=$CURRENT
		LATEST_VER=( ${VER[*]} )
	    fi
	    break
	fi
      done
    done
    echo $LATEST
}

# Module versions gathered from this function will be the latest versions
# which _could_ cause problems.
function version() {
	DATAFILE=new2
	# file handle 3 will deliver the package names (without version info) that we'll process
	exec 3< <( sed -n 's/-[[:digit:].]\+tar\.gz$//p' $DATAFILE | sort | uniq )
	while read <&3 
	do
	  grep "^$REPLY-[[:digit:].]\+tar\.gz$" $DATAFILE | grab_latest >> individual.ver
	done
}

function order() {
	DATAFILE=release.ver
	# file handle 3 will now sort them according to our static order file
	exec 3< $ORDERFILE
	while read <&3
	do
	  grep "^$REPLY-[[:digit:].]\+tar\.gz$" $DATAFILE | grab_latest >> final.ver
	done
}

# Determine the $VERSION packages.
echo
echo "Retrieving package list for $VERSION... Please wait."
for series in font xserver app data driver lib proto util ; do
   rm -rf $CWD/$VERSION/source/$series.lst
   mkdir -p $CWD/$VERSION/{tmp.$series,source/$series}
   cd $CWD/$VERSION/tmp.$series
   wget $RELEASE/$series > /dev/null 2>&1
   grep -o 'f=".*gz' index.html > new 
   sed -e 's/f="//' -e 's/".*//' -e 's/X11R7.*-//' new > release.ver
   rm -f index.html new
   # Now determine what was left out or is contributed:
   if [ -f $CWD/extras/$series-order ]; then
      sed 's/-[[:digit:].]\+tar\.gz//g' release.ver > release.nover
      cat $CWD/extras/$series-order release.nover | sort | uniq -u > misc
      # Grab a monolithic package list for version()
      wget $INDIVIDUAL/$series > /dev/null 2>&1
      grep -o 'f=".*gz' index.html > new 
      sed -e 's/f="//' -e 's/".*//' new > new2
      version
      rm -f index.html new new2
      # Find out what is deprecated in this $VERSION.
      # Basically, anything that's not in $RELEASE, but
      # can still be found in $series-order.
      dont_build
      cat misc dont-build | sort | uniq -d > not-in-release
      # Filter out not-in-release from misc.
      for module in $(cat not-in-release); do
	sed -i "s/$module//" misc
	sed -i '/^$/d' misc
      done
      # Now, whatever is left, scoot it over to release.ver
      for name in $(cat misc); do
	grep $name individual.ver >> release.ver
	sed -i '/^$/d' release.ver
      done
      # Add libxcb and xcb-proto... Is util even used for anything?
      if [ "$series" = "lib" ]; then
         echo "libxcb-$LIBXCB.tar.gz" >> release.ver
      elif [ "$series" = "proto" ]; then
         echo "xcb-proto-$XCBPROTO.tar.gz" >> release.ver
      fi
      # Sort it according to our build order.
      ORDERFILE=$CWD/extras/$series-order
      order
      # Now compare it with dont-build one last time to catch
      # stuff like the sun drivers. Stuff that was listed in
      # $RELEASE but you just don't want. Yep, seems a little
      # redundant but misc dictates we do it again.
      for module in $(cat dont-build); do
         sed -i "/^$module/d" final.ver
      done
      # Read fix() comments:
      fix
      sed -i '/^$/d' final.ver
      cp final.ver $CWD/$VERSION/source/$series.lst
   else
      # Must be xserver
      if [ "$XSERVER" != "" ]; then
	 sed -i "s/^xorg.*/xorg-server-$XSERVER.tar.gz/" release.ver
      fi
      cp release.ver $CWD/$VERSION/source/$series.lst
   fi
done

# Clean up:
if [ "$REMOVETMP" = "yes" ]; then
   rm -rf $CWD/$VERSION/tmp.*
fi

# Grab the tarballs:
if [ "$DOWNLOADSOURCE" = "yes" ]; then
   echo
   echo "Retrieving source tarballs for $VERSION..."
   echo
   for series in driver font lib app data proto util xserver; do
      # I should probably go back to using bz2 for everything and then
      # sed the compiz bz2 to gz here... All these gzips are killin me.
      # Make a conditional $pkgname for compiz below I guess... That or
      # tar\.*
      for tarball in $(cat $CWD/$VERSION/source/$series.lst); do
         if [ ! -f $CWD/$VERSION/source/$series/$tarball ]; then
            cd $CWD/$VERSION/source/$series
            pkgname=$(echo $tarball | sed 's/-[[:digit:].]\+tar\.gz//')
            if [ "$pkgname" = "libxcb" ]; then
               $WGET $XCB/$tarball
            elif [ "$pkgname" = "xcb-proto" ]; then
               $WGET $XCB/$tarball
            else 
               $WGET $INDIVIDUAL/$series/$tarball
            fi
         fi
      done
   done
fi

echo "All Done!"
echo

exit 1