#!/bin/bash
# uppsvn2deb
# Updates svn, batch builds theide and creates .deb package
#

######################################################################
#convert a path to absolute one
rel2abs()
{
    # make sure file is specified
    if [ -z "$1" ]
    then
       echo "$0 <path>"
       return 1
    fi

    # already absolute case
    if [ "${1:0:1}" = "/" ] || [ "$PWD" = "/" ]
    then
       ABS=""
    else
       ABS="$PWD"
    fi

    # loop thru path
    IFS="/"
    for DIR in $1
    do
       if [ -n "$DIR" ]
       then
          if [ "$DIR" = ".." ]
          then
             ABS="${ABS%/*}"

          elif [ "$DIR" != "." ]
          then
             ABS="$ABS/$DIR"
          fi
       fi
    done
    IFS=":"

    echo $ABS
    return 0
} 

######################################################################
echo
echo "UPP SVN2DEB BUILDER"
echo "CopyRight(c) 2008 By Massimo Del Fedele"
echo

# checks for parameters
if [ x"$1" = x -o x"$2" = x ]
then
	echo "uppsvn2deb <upp svn root> <dest folder>"
	exit 1
fi

#sets up source and dest folder names
src=$(rel2abs $1)
dst=$(rel2abs $2)

#locates 'uppdeb' and 'idebuild' scripts
uppdeb="`which uppdeb`"
if [ x$uppdeb = x ]
then
	# couldn't find it on path, just try on this script's path
	LSOF=$(lsof -p $$ 2>/dev/null | grep -E "/"$(basename $0)"$")
	uppdeb=$(echo $LSOF | sed -r s/'^([^\/]+)\/'/'\/'/1 2>/dev/null)
	uppdeb=$(dirname $uppdeb)/uppdeb
fi
if [ ! -f $uppdeb ]
then
	echo "ERROR - Could not find 'uppdeb' script"
	echo "Please check if it's on current path"
	exit 1
fi
idebuild="`which idebuild`"
if [ x$idebuild = x ]
then
	# couldn't find it on path, just try on this script's path
	LSOF=$(lsof -p $$ 2>/dev/null | grep -E "/"$(basename $0)"$")
	idebuild=$(echo $LSOF | sed -r s/'^([^\/]+)\/'/'\/'/1 2>/dev/null)
	idebuild=$(dirname $idebuild)/idebuild
fi
if [ ! -f $idebuild ]
then
	echo "ERROR - Could not find 'idebuild' script"
	echo "Please check if it's on current path"
	exit 1
fi

#checks if source folder is an upp svn folder
if [ -d $src/.svn ]
then
	true
else
	echo "Source folder is not an SVN one."
	exit 1
fi
for name in uppsrc examples tutorial reference bazaar
do
	if [ ! -d $src/$name ]
	then
		echo "bad source folder '$src'"
		echo "missing '$src/$name' subfolder"
		exit 1
	fi
done

#do an svn update in svn folder, just to be sure that's the latest
cd $src

#gets svn release
if [ -e ./.svn/entries ]
then
    while read release
    do
        if [ "$release" = "dir" ]
        then
            read release
            break
        fi
    done < ./.svn/entries
else
    echo "$0: error: file not found!"
    exit 1
fi

echo "building .deb for SVN release $release"

#now patch uppsrc/ide/version.h file to match current svn build
mv $src/uppsrc/ide/version.h $src/uppsrc/ide/version.h.BACKUP
echo "#define IDE_VERSION    \"SVN.$release\"" > $src/uppsrc/ide/version.h

#creates a temporary folder for executable file
outtmp="`mktemp -t -d uppsvn2deb.XXXXXXX`"

#build theide
echo "building TheIDE......"
$idebuild $src $outtmp/theide-svn
if [ $? = 0 ]
then
	true
else
	echo "Error building TheIDE"
	echo "Please check executables for errors"
	exit 1
fi

#creates the deb package
echo "Creating package......"
$uppdeb $src $outtmp/theide-svn $dst SVN.$release
result=$?

#resets uppsrc/ide/version.h file
rm $src/uppsrc/ide/version.h
mv $src/uppsrc/ide/version.h.BACKUP $src/uppsrc/ide/version.h

#remove temporary folder
rm -rf $outtmp