#!/bin/bash

# Adds a new version to one of the toolchain component

myname="$0"

doHelp() {

    cat <<-EOF

Usage: ${myname} <tool> [option] <version>

  'tool' in one of:

    --gcc, --binutils, --glibc, --eglibc, --uClibc, --linux,

    --gdb, --dmalloc, --duma, --strace, --ltrace, --libelf

    --gmp, --mpfr

  Valid options for all tools:

    --experimental, -x

      mark the version as being experimental

    --obsolete, -o

      mark the version as being obsolete

  'version' is a valid version for the specified tool.

  Examples:

    add version 2.6.19.2 to linux kernel:

      ${myname} --linux 2.6.19.2

    add experimental versions 2.3.5 and 2.3.6 to glibc:

      ${myname} --glibc -x 2.3.5 2.3.6

EOF

}

cat=

tool=

tool_prefix=

VERSION=

EXP=

OBS=

prompt_suffix=

i=1

while [ $i -le $# ]; do

    case "${!i}" in

        # Tools:

        --gcc)              cat=CC;        tool=gcc;      tool_prefix=cc;;

        --binutils)         cat=BINUTILS;  tool=binutils; tool_prefix=;;

        --glibc)            cat=LIBC;      tool=glibc;    tool_prefix=libc;;

        --eglibc)           cat=LIBC;      tool=eglibc;   tool_prefix=libc;;

        --uClibc)           cat=LIBC;      tool=uClibc;   tool_prefix=libc;;

        --linux)            cat=KERNEL;    tool=linux;    tool_prefix=kernel;;

        --gdb)              cat=GDB;       tool=gdb;      tool_prefix=debug;;

        --dmalloc)          cat=DMALLOC;   tool=dmalloc;  tool_prefix=debug;;

        --duma)             cat=DUMA;      tool=duma;     tool_prefix=debug;;

        --strace)           cat=STRACE;    tool=strace;   tool_prefix=debug;;

        --ltrace)           cat=LTRACE;    tool=ltrace;   tool_prefix=debug;;

        --libelf)           cat=LIBELF;    tool=libelf;   tool_prefix=tools;;

        --gmp)              cat=GMP;       tool=gmp;      tool_prefix=gmp_mpfr;;

        --mpfr)             cat=MPFR;      tool=mpfr;     tool_prefix=gmp_mpfr;;

        # Tools options:

        -x|--experimental)  EXP=1; OBS=; prompt_suffix=" (EXPERIMENTAL)";;

        -o|--obsolete)      OBS=1; EXP=; prompt_suffix=" (OBSOLETE)";;

        # Misc:

        -h|--help)          doHelp; exit 0;;

        -*)                 echo "Unknown option: '${!i}' (use -h/--help for help)."; exit 1;;

        *)                  VERSION="${VERSION} ${!i}";;

    esac

    i=$((i+1))

done

[ -n "${tool}" -o -n "${VERSION}" ] || { doHelp; exit 1; }

for ver in ${VERSION}; do

    unset DEP L1 L2 L3 L4 L5 L6 FILE v ver_M ver_m

    FILE="config/${tool_prefix}/${tool}.in"

    v=$(echo "${ver}" |sed -r -e 's/-/_/g; s/\./_/g;')

    L1="config ${cat}_V_${v}\n"

    L2="    bool\n"

    L3="    prompt \"${ver}${prompt_suffix}\"\n"

    [ -n "${EXP}" ] && DEP="${DEP} && EXPERIMENTAL"

    [ -n "${OBS}" ] && DEP="${DEP} && OBSOLETE"

    [ -n "${DEP}" ] && L4="    depends on "$(echo "${DEP}" |sed -r -e 's/^ \&\& //; s/\&/\\&/g;')"\n"

    if [ "${tool}" = "gcc" ]; then

        # Extract 'M'ajor and 'm'inor from version string

        ver_M=$(echo "${ver}...." |cut -d . -f 1)

        ver_m=$(echo "${ver}...." |cut -d . -f 2)

        if [ ${ver_M} -gt 4 -o \( ${ver_M} -eq 4 -a ${ver_m} -ge 3 \) ]; then

            L5="    select CC_GCC_4_3_or_later\n"

        fi

    fi

    L6="    default \"${ver}\" if ${cat}_V_${v}"

    sed -r -i -e 's/^(# CT_INSERT_VERSION_ABOVE)$/'"${L1}${L2}${L3}${L4}${L5}"'\n\1/;'  \

              -e 's/^(# CT_INSERT_VERSION_STRING_ABOVE)$/'"${L6}"'\n\1/;'               \

              "${FILE}"

done