#!/bin/bash
# This script gets EAGLE to export a parts list
# This process is complicated because EAGLE has a bug that causes
# it to continuously execute the script telling it to export the list.
# Also, if Xvfb is available, this script will run eagle in that so it
# doesn't offend the user.

EAGLE_JOB="%1"
XVFB=0

if ( which Xvfb > /dev/null 2>&1 )
    then
    AUTH=`mktemp`
    echo localhost > $AUTH
    Xvfb -auth $AUTH :1 > /dev/null 2>&1 &
    export DISPLAY=:1
    EAGLE_JOB="%2"
    XVFB=1
fi

if [ -f $2 ]
then
    rm -f $2
fi

scr=`mktemp`
tmpf=`mktemp`
# Eagle refuses to write over an existing file
rm $tmpf

# Get eagle to output partslist into two files
# We kill eagle after the second file has been created
# This avoids the race condition in which we kill eagle when it's halfway through 
# filling the BOM file.
echo "export partlist $2;" > $scr
echo "export partlist $tmpf;" >> $scr

EAGLE=eagle
if [[ `sr eagle_ver $1 | cut -d . -f 1` == "5" ]]
    then
    EAGLE=eagle5
fi

echo -n "Generating bom (`basename $1`)..."
$EAGLE $1 -S $scr &
eagle_pid=$!

while [ ! -f $tmpf ]
do
    sleep 0.1
done

disown $EAGLE_JOB
kill -9 $eagle_pid
echo " done."

rm -f $tmpf
rm $scr

# Kill the X server
if [[ "$XVFB" == "1" ]]
    then
    kill -9 %1
fi