#!/bin/sh

 set -e

 # Adds a new version to one of the toolchain component

 myname="$0"

 # Parse the tools' paths configuration

 # It is expected that this script is only to be run from the

 # source directory of crosstool-NG, so it is trivial to find

 # paths.mk (we can't use  ". paths.mk", as POSIX states that

 # $PATH should be searched for, and $PATH most probably doe

 # not include "."), hence the "./".

 . "./paths.mk"

 doHelp() {

     cat <<-EOF

 		Usage: ${myname} <--tool> <[options] version [...]> ...

 		  'tool' in one of:

 		    gcc, binutils, glibc, eglibc, uClibc, newlib, linux, gdb, dmalloc,

 		    duma, strace, ltrace, libelf, gmp, mpfr, ppl, cloog, mpc

 		  Valid options for all tools:

 		    --stable, -s, +x   (default)

 		      mark the version as being stable (as opposed to experimental, below)

 		    --experimental, -x, +s

 		      mark the version as being experimental (as opposed to stable, above)

 		    --current, -c, +o   (default)

 		      mark the version as being cuurent (as opposed to obsolete, below)

 		    --obsolete, -o, +c

 		      mark the version as being obsolete (as opposed to current, above)

 		  Note: setting a new tool resets to the defaults: 'stable' and 'current'.

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

 		  Examples:

 		    add stable current version 2.6.19.2 to linux kernel:

 		      ${myname} --linux 2.6.19.2

 		    add experimental obsolete version 2.3.5 and stable current versions 2.6.1

 		    and 2.6.2 to glibc, add stable obsolete version 3.3.3 to gcc:

 		      ${myname} --glibc -x -o 2.3.5 -s -c 2.6.1 2.6.2 --gcc -o 3.3.3

 		EOF

 }

 # Extract field $3 from version $1 with separator $2

 getVersionField() {

     local version="$1"

     local sep="$2"

     local field="$3"

     echo "${version}${sep}${sep}${sep}${sep}" |cut -d ${sep} -f ${field}

 }

 # Effectively add a version to the specified tool

 # $cat          : tool category

 # $tool         : tool name

 # $tool_prefix  : tool directory prefix

 # $EXP          : set to non empty if experimental, to empty otherwise

 # #OBS          : set to non empty if obsolete, to empty otherwise

 # $1            : version string to add

 addToolVersion() {

     local version="$1"

     local file="$2"

     local config_ver_option

     local exp_obs_prompt

     local deps v ver_M ver_m ver_p

     local SedExpr1 SedExpr2

     [ -f "${file}" ] || return 0

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

     config_ver_option="${cat}_V_${v}"

     # Check for existing version: it can be legitimitate for an end-user

     # to try adding a new version if the one he/she wants is not listed.

     # But it can be the case where the version is hidden behind either one

     # of EXPERIMENTAL or OBSOLETE, so warn if the version is already listed.

     if grep -E "^config ${config_ver_option}$" "${file}" >/dev/null 2>&1; then

         echo "'${tool}': version '${version}' already present:"

         grep -A1 -B0 -n                                                     \

              -E "^(config ${config_ver_option}| {4}prompt \"${version}\")$" \

              "${file}" /dev/null

         return 0

     fi

     SedExpr1="${SedExpr1}config ${config_ver_option}\n"

     SedExpr1="${SedExpr1}    bool\n"

     SedExpr1="${SedExpr1}    prompt \"${version}"

     case "${EXP},${OBS}" in

         ,)  ;;

         ,*) exp_obs_prompt=" (OBSOLETE)"

             deps="    depends on OBSOLETE"

             ;;

         *,) exp_obs_prompt=" (EXPERIMENTAL)"

             deps="    depends on EXPERIMENTAL"

             ;;

         *)  exp_obs_prompt=" (EXPERIMENTAL, OBSOLETE)"

             deps="    depends on EXPERIMENTAL \\&\\& OBSOLETE"

             ;;

     esac

     [ -n "${exp_obs_prompt}" ] && SedExpr1="${SedExpr1}${exp_obs_prompt}"

     SedExpr1="${SedExpr1}\""

     [ -n "${deps}" ] && SedExpr1="${SedExpr1}\n${deps}"

     case "${tool}" in

         gcc)

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

             ver_M=$(getVersionField "${version}" . 1)

             ver_m=$(getVersionField "${version}" . 2)

             if [   \( ${ver_M} -eq 4 -a ${ver_m} -eq 6 \)  ]; then

                 SedExpr1="${SedExpr1}\n    select CC_GCC_4_6"

             elif [ \( ${ver_M} -eq 4 -a ${ver_m} -eq 5 \)  ]; then

                 SedExpr1="${SedExpr1}\n    select CC_GCC_4_5"

             elif [ \( ${ver_M} -eq 4 -a ${ver_m} -eq 4 \)  ]; then

                 SedExpr1="${SedExpr1}\n    select CC_GCC_4_4"

             elif [ \( ${ver_M} -eq 4 -a ${ver_m} -eq 3 \)  ]; then

                 SedExpr1="${SedExpr1}\n    select CC_GCC_4_3"

             elif [ \( ${ver_M} -eq 4 -a ${ver_m} -eq 2 \)  ]; then

                 SedExpr1="${SedExpr1}\n    select CC_GCC_4_2"

             fi

             ;;

         uClibc)

             # uClibc-0.9.30 and above need some love

             ver_M=$(getVersionField "${version}" . 1)

             ver_m=$(getVersionField "${version}" . 2)

             ver_p=$(getVersionField "${version}" . 3)

             if [    ${ver_M} -ge 1                                      \

                  -o ${ver_M} -eq 0 -a ${ver_m} -ge 10                   \

                  -o ${ver_M} -eq 0 -a ${ver_m} -eq 9 -a ${ver_p} -ge 30 ]; then

                 SedExpr1="${SedExpr1}\n    select LIBC_UCLIBC_0_9_30_or_later"

             fi

             ;;

         gdb)

             # gdb-7.0 and above have special handling

             ver_M=$(getVersionField "${version}" . 1)

             if [ ${ver_M} -ge 7 ]; then

                 SedExpr1="${SedExpr1}\n    select GDB_7_0_or_later"

             fi

             ;;

     esac

     SedExpr2="    default \"${version}\" if ${config_ver_option}"

     "${sed}" -r -i -e 's/^(# CT_INSERT_VERSION_BELOW)$/\1\n\n'"${SedExpr1}"'/;' "${file}"

     "${sed}" -r -i -e 's/^(# CT_INSERT_VERSION_STRING_BELOW)$/\1\n'"${SedExpr2}"'/;' "${file}"

 }

 cat=

 tool=

 tool_prefix=

 VERSION=

 EXP=

 OBS=

 if [ $# -eq 0 ]; then

     doHelp

     exit 1

 fi

 while [ $# -gt 0 ]; do

     case "$1" in

         # Tools:

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

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

         --glibc)    EXP=; OBS=; cat=LIBC_GLIBC;     tool=glibc;     tool_prefix=libc;;

         --eglibc)   EXP=; OBS=; cat=LIBC_EGLIBC;    tool=eglibc;    tool_prefix=libc;;

         --uClibc)   EXP=; OBS=; cat=LIBC_UCLIBC;    tool=uClibc;    tool_prefix=libc;;

         --newlib)   EXP=; OBS=; cat=LIBC_NEWLIB;    tool=newlib;    tool_prefix=libc;;

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

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

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

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

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

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

         --gmp)      EXP=; OBS=; cat=GMP;            tool=gmp;       tool_prefix=companion_libs;;

         --mpfr)     EXP=; OBS=; cat=MPFR;           tool=mpfr;      tool_prefix=companion_libs;;

         --ppl)      EXP=; OBS=; cat=PPL;            tool=ppl;       tool_prefix=companion_libs;;

         --cloog)    EXP=; OBS=; cat=CLOOG;          tool=cloog;     tool_prefix=companion_libs;;

         --mpc)      EXP=; OBS=; cat=MPC;            tool=mpc;       tool_prefix=companion_libs;;

         --libelf)   EXP=; OBS=; cat=LIBELF;         tool=libelf;    tool_prefix=companion_libs;;

         # Tools options:

         -x|--experimental|+s)   EXP=1;;

         -s|--stable|+x)         EXP=;;

         -o|--obsolete|+c)       OBS=1;;

         -c|--current|+o)        OBS=;;

         # Misc:

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

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

         # Version string:

         *)  [ -n "${tool}" ] || { doHelp; exit 1; }

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

             # Components have their version selection either

             # in the .in or the .in.2 file. Handle both.

             addToolVersion "$1" "${file_base}"

             addToolVersion "$1" "${file_base}.2"

             ;;

     esac

     shift

 done