#!/bin/bash

#+--------------------------------------------------------------------------------------------
#|Description:  This is shell script used to download a zbarapplication
#|             and cross compile it.
#|     Author:  GuoWenxue <guowenxue@gmail.com>
#|  ChangeLog:
#|           1, Initialize 1.0.0 on 2011.12.26
#+--------------------------------------------------------------------------------------------

set -e

PRJ_PATH=`pwd`

APP_NAME=zbar-latest
APP_PACK=$APP_NAME.tar.bz2

INST_PATH=$PRJ_PATH/../install

CROSS=/opt/crosstool/cortex-a7/bin/arm-linux-gnueabi-

LYFTP_SRC=ftp://master.iot-yun.club/src/

# arg1 is the packet download address
# arg2 is the download packet rename name
function download_packet()
{
    if [ $# -lt 1 ] ; then
        echo "ERROR: $0 without argument for packet download address"
        exit;
    fi

    rename=0

    dl_addr=$1
    dl_file=`basename $dl_addr`

    if [ $# -ge 2 ] ; then
        pack=$2
        rename=1
    else
        pack=$dl_file
    fi

    if [ -s $pack ] ; then
        echo "INFO: $pack already exist, skip download it"
        return 0;
    fi

    echo "INFO: Start to download packet $pack now"
    wget $dl_addr 

    if [ $? != 0  ] ; then
        echo "ERROR: Download $pack failure, exit now..."
        exit;
    fi 
    echo "INFO: Download $pack ok!"

    if [ $rename != 0 ] ; then
        mv  $dl_file $pack
    fi

    return 0;
}

function decompress_packet()
(
   echo "+---------------------------------------------+"
   echo "|  Decompress $1 now"  
   echo "+---------------------------------------------+"
   rv=0;

    ftype=`file "$1"`
    case "$ftype" in
       "$1: Zip archive"*)
           unzip "$1" ;;

       "$1: gzip compressed"*)
           if [ 0 != `expr "$1" : ".*.tar.*" ` ] ; then
               tar -xzf $1
           else
               gzip -d "$1"
           fi ;;

       "$1: bzip2 compressed"*)
           if [ 0 != `expr "$1" : ".*.tar.*" ` ] ; then
               tar -xjf $1
           else
               bunzip2 "$1"
           fi ;;

       "$1: POSIX tar archive"*)
           tar -xf "$1" ;;

       "$1: LZMA compressed data, streamed"*)
           xz -d $1 && tar -xf `ls *.tar` ;;

       *)
           rv=1;
           echo "$1 is unknow compress format";;
    esac

    if [ $rv != 0 ] ; then
        echo "ERROR: Decompress $1 failure, exit now..."
        exit 1;
    fi

    return $rv;
)

export CC=${CROSS}gcc 
export CXX=${CROSS}g++ 
export AR=${CROSS}ar 
export AS=${CROSS}as 
export LD=${CROSS}ld 
export NM=${CROSS}nm 
export RANLIB=${CROSS}ranlib 
export STRIP=${CROSS}strip

if [ -d $INST_PATH ] ; then
    echo "INFO: $APP_NAME already cross compiled, exit now ..."
    #exit;
fi


LIB_ZLIB=zlib-1.2.11
PACK_ZLIB=$LIB_ZLIB.tar.gz

if [ ! -f $INST_PATH/lib/libz.so ] ; then

    download_packet  ${LYFTP_SRC}/${PACK_ZLIB} 

    if [ ! -d $LIB_ZLIB ] ; then
        decompress_packet $PACK_ZLIB
        if [ $? != 0 ] ; then
            exit 1;
        fi
    fi

    echo "+------------------------------------------------------------------+"
    echo "|          Build $LIB_ZLIB for $ARCH "
    echo "| Crosstool:  $CROSS"
    echo "+------------------------------------------------------------------+"

    cd $LIB_ZLIB
    ./configure --prefix=$INST_PATH 
    make && make install
    cd -
else
    echo "+------------------------------------------------------------------+"
    echo "|          $LIB_ZLIB already ready "
    echo "+------------------------------------------------------------------+"
fi

LIB_IMGIC=ImageMagick6-6.9.4-0 
PACK_IMGIC=$LIB_IMGIC.tar.gz

if [ ! -f $INST_PATH/lib/libMagickCore-6.Q16.a ] ; then

    download_packet  ${LYFTP_SRC}/${PACK_IMGIC}

    if [ ! -d $LIB_IMGIC ] ; then
        decompress_packet $PACK_IMGIC
        if [ $? != 0 ] ; then
            exit 1;
        fi
    fi

    echo "+------------------------------------------------------------------+"
    echo "|          Build $LIB_IMGIC for $ARCH "
    echo "| Crosstool:  $CROSS"
    echo "+------------------------------------------------------------------+"

    cd $LIB_IMGIC

    CFLAGS="-I${INST_PATH}/include -DMAGICKCORE_QUANTUM_DEPTH=16" LDFLAGS=-L${INST_PATH}/lib \
    ./configure --host=arm-linux --enable-static --disable-shared --prefix=$INST_PATH \
    --without-magick-plus-plus --without-perl --without-x --without-dps --without-xml \
    --without-pango --without-freetype --without-png
  
    make && make install
    cd -
else
    echo "+------------------------------------------------------------------+"
    echo "|          $LIB_IMGIC already ready "
    echo "+------------------------------------------------------------------+"
fi


# Download source code packet
download_packet ${LYFTP_SRC}/zbar-latest.tar.bz2

# Decompress source code packet 
if [ ! -d $APP_NAME ] ; then 
    decompress_packet $APP_PACK
    if [ $? != 0 ] ; then
        exit 1;
    fi
fi


echo "+------------------------------------------------------------------+"
echo "|          Build $APP_NAME for $ARCH "
echo "| Crosstool:  $CROSS"
echo "+------------------------------------------------------------------+"

cd $APP_NAME
   git checkout 8edfa5f8c4d11a54 && rm -rf * && git checkout .
   autoreconf --install
   CFLAGS="-DMAGICKCORE_HDRI_ENABLE=1 -DMAGICKCORE_QUANTUM_DEPTH=16" \
       ./configure --host=arm-linux --enable-static --enable-shared --prefix=$INST_PATH \
   --without-gtk --without-python --without-qt --without-x --without-java  \
   --with-imagemagick=${INST_PATH}/ --without-graphicsmagick \
   MAGICK_CFLAGS=-I${INST_PATH}//include/ImageMagick-6  MAGICK_LIBS="-L${INST_PATH}/lib -lMagickWand-6.Q16 -lMagickCore-6.Q16 -lm -lz -L`pwd`/zbar/.libs/ -lzbar "
  
   mkdir -p ./doc/man/
   touch ./doc/man/zbarimg.1
   touch ./doc/man/zbarcam.1
   make all && make install
cd -