#!/bin/bash
label_regexp(){
   echo "^label[[:blank:]]\+${1}\|^LABEL[[:blank:]]\+${1}"
}

label_locale(){
   echo "[[:blank:]]locale=${1}"
}

generate_label(){
   LNUM=$1
   echo -e "\nLABEL ${ISOLINUX_OPT[$LNUM]}"
   sed -e "s%$(label_locale '[^[:blank:]]\+')% locale=${ISOLINUX_LANG[$LNUM]}%" $TMP_FILE
}


ISOLINUX_CFG="binary/isolinux/isolinux.cfg"
ISOLINUX_OPT=(1 2 lliurex lliurex-de lliurex-ar lliurex-fr lliurex-en lliurex-ro lliurex-ru lliurex-an lliurex-ca lliurex-eu lliurex-gl)
ISOLINUX_LANG=(qcv_ES es_ES qcv_ES de_DE ar_MA fr_FR en_GB ro_RO ru_RU an_ES ca_ES eu_ES gl_ES)
APPEND_LOCALE="locale=${ISOLINUX_LANG[0]}"
LABEL_APPEND="^[[:blank:]]*append[[:blank:]]\+\|^[[:blank:]]*APPEND[[:blank:]]\+"

TMP_OPTIONS_LIST="$(tempfile)"
FINAL_OPTIONS_LIST="binary/casper/boot-options.standard"

[ -f "$ISOLINUX_CFG" ] || exit 0
grep -q "$(label_regexp live)" "$ISOLINUX_CFG" || exit 0

TMP_FILE="$(tempfile)"
# extract "default label" to TMP_FILE
sed -ne "/$(label_regexp live)/,/$(label_regexp)/{/$(label_regexp)/d;p}" "$ISOLINUX_CFG" > "$TMP_FILE"
# check locale
if ! grep -q "$(label_locale '[^[:blank:]]\+')" $TMP_FILE ; then
   # fix temp
   sed -i -e "/${LABEL_APPEND}/s%$% $APPEND_LOCALE%" $TMP_FILE
   # fix isolinux.cfg
   sed -i -e "/$(label_regexp live)/,/$(label_regexp)/{/${LABEL_APPEND}/s%$% $APPEND_LOCALE%}" "$ISOLINUX_CFG"
fi

# generate isolinux labels and temporary list of 'ignorable options'
i=0
while [ $i -lt ${#ISOLINUX_OPT[@]} ] ; do
   generate_label $i |tee -a "$ISOLINUX_CFG" |sed -ne "/${LABEL_APPEND}/{s%${LABEL_APPEND}%%;s%[[:blank:]]\+%\n%gp}" >> "$TMP_OPTIONS_LIST"
   i=$(( $i+1 ))
done

# generate final list
sort -u "$TMP_OPTIONS_LIST" > "$FINAL_OPTIONS_LIST"

#Added options for failsafe mode

ISOLINUX_OPT=(3 4)

grep -q "$(label_regexp livefailsafe)" "$ISOLINUX_CFG" || exit 0

# extract "default label" to TMP_FILE
sed -ne "/$(label_regexp livefailsafe)/,/$(label_regexp)/{/$(label_regexp)/d;p}" "$ISOLINUX_CFG" > "$TMP_FILE"
# check locale
if ! grep -q "$(label_locale '[^[:blank:]]\+')" $TMP_FILE ; then
   # fix temp
   sed -i -e "/${LABEL_APPEND}/s%$% $APPEND_LOCALE%" $TMP_FILE
   # fix isolinux.cfg
   sed -i -e "/$(label_regexp livefailsafe)/,/$(label_regexp)/{/${LABEL_APPEND}/s%$% $APPEND_LOCALE%}" "$ISOLINUX_CFG"
fi

i=0
while [ $i -lt ${#ISOLINUX_OPT[@]} ] ; do
   generate_label $i >> "$ISOLINUX_CFG"
   i=$(( $i+1 ))
done

#remove splash and quiet options for failsafe mode
sed -i -e "/LABEL 3/,$ s%splash quiet\|quiet splash%%" "$ISOLINUX_CFG"

# generate final list
sort -u "$TMP_OPTIONS_LIST" > "$FINAL_OPTIONS_LIST"


rm -f "$TMP_FILE"
rm -f "$TMP_OPTIONS_LIST"


exit 0