#!/bin/bash
#
# Tool to generate HEADER.html in various directories with
# context-specific documentation
#
# Call as:
# 
# generate_headers $INPUT_FILE $OUTPUT_DIR $ARCH [firmware]

set -e

TOPDIR=$(dirname $0)
if [ "$TOPDIR" = "." ] ; then
    TOPDIR=`pwd`
fi
export TOPDIR

. ${TOPDIR}/CONF.sh
. ${TOPDIR}/settings.sh
. ${TOPDIR}/common.sh

CPP="cpp -traditional -undef -P -C -nostdinc"

if [ "$1"x = ""x ] ; then
   echo "$0: Need to be told what input file to use!"
   exit 1
fi
INPUT=$1

if [ "$2"x = ""x ] ; then
   echo "$0: Need to be told which directory to target!"
   exit 1
fi
WORK=$2

if [ "$3"x = ""x ] ; then
   echo "$0: Need to be told which architecture to target!"
   exit 1
fi
INARCH=$3

if [ "$4"x = "firmware"x ] ; then
    FIRMWARE="-DFIRMWARE"
    IN_FW=1
fi

if [ "$IN_FW"x = ""x ]; then
    if $(arch_has_firmware $INARCH) ; then
	FIRMWARE="-DARCH_HAS_FIRMWARE"
    else
	FIRMWARE=""
    fi
fi

case $INARCH in
    i386|amd64|arm64)
	EXTRAS="-DISOHYBRID"
	ARCH=$INARCH
	;;
    multi-arch)
	EXTRAS="-DISOHYBRID -DONEonly"
	ARCH="multi"
	;;
    *)            
	ARCH=$INARCH
	EXTRAS=""
	;;
esac

case $WORK in
    *daily*)
	# for daily builds, don't mention large sets - we're only
	# making netinsts...
	EXTRAS="$EXTRAS -DONEonly"
	;;
esac

case $ARCH in
    kfreebsd*)
	KERNEL="kFreeBSD"
	;;
    hurd*)
	KERNEL="Hurd"
	;;
    *)
	KERNEL="Linux"
	;;
esac

cd $WORK
for DIR1 in *-* tar; do
    STYLE=$(echo $DIR1 | sed 's,^.*/,,g;s,-.*$,,g')
    TYPE=$(echo $DIR1 | sed 's,^.*-,,g')
    if [ -d $DIR1 ]; then
	UPDATES=""
	if (ls -l $DIR1 | grep -q update); then
	    UPDATES="-DUPDATES"
	fi
	#echo "Found directory $DIR (ARCH $ARCH, STYLE $STYLE, TYPE $TYPE)"
	$CPP -DARCH=${ARCH} -DARCH${ARCH} -DKERNEL=${KERNEL} -DSTYLE${STYLE} -DSTYLE=${STYLE} -DTYPE${TYPE} $UPDATES $EXTRAS $FIRMWARE $INPUT > $DIR1/HEADER.html
	if [ -e $DIR1/.errata.html ]; then
	    $CPP -DARCH=${ARCH} -DARCH${ARCH} -DKERNEL=${KERNEL} -DSTYLE${STYLE} -DSTYLE=${STYLE} -DTYPE${TYPE} $UPDATES $EXTRAS $FIRMWARE $DIR1/.errata.html >> $DIR1/HEADER.html
	fi
    fi
done