#!/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, --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

   Valid mandatory 'option' for tool==linux is one and only one of:

     --install, --sanitised, --copy

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

   Examples:

     add version 2.6.19.2 to linux kernel install method:

       ${myname} --linux --install 2.6.19.2

     add versions 2.3.5 and 2.3.6 to glibc:

       ${myname} --glibc 2.3.5 2.3.6

 EOF

 }

 cat=

 tool=

 tool_prefix=

 tool_suffix=

 VERSION=

 EXP=

 OBS=

 prompt_suffix=

 i=1

 while [ $i -le $# ]; do

     case "${!i}" in

         # Tools:

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

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

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

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

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

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

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

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

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

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

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

         --gmp)              cat=GMP;       tool=gmp;      tool_prefix=cc;      tool_suffix=;;

         --mpfr)             cat=MPFR;      tool=mpfr;     tool_prefix=cc;      tool_suffix=;;

         # Tools options:

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

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

         --install)          tool_suffix=install;;

         --sanitised)        tool_suffix=sanitised;;

         --copy)             tool_suffix=copy;;

         # 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; }

 case "${cat}" in

     KERNEL) [ -z "${tool_suffix}" ] && { doHelp; exit 1; } ;;

     *)      ;;

 esac

 for ver in ${VERSION}; do

     # Split VERSION into MAJOR MINOR PATCHLEVEL EXTRAVERSION 

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

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

     ver_P=$(echo "${ver}...." |cut -d . -f 3)

     ver_E=$(echo "${ver}...." |cut -d . -f 4)

     unset DEP L1 L2 L3 L4 L5 L6 FILE

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

     if [ "${cat}" = "KERNEL" ]; then

         TOOL_SUFFIX=$(echo "${tool_suffix}" |tr [[:lower:]] [[:upper:]])

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

         L2="    bool\n"

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

         # Extra versions are not necessary visible:

         case "${tool_suffix},${ver}" in

             sanitised,*)    ;; # Sanitised headers always have an extra version

             *,*.*.*.*)      DEP="${DEP} && KERNEL_VERSION_SEE_EXTRAVERSION";;

         esac

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

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

     else

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

         L2="    bool\n"

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

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

         case "${tool}" in

             gcc)

                 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

                 ;;

         esac

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

     fi

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

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

     case "${DEP}" in

         "") ;;

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

     esac

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

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

 done