#!/bin/sh

# cccl
# Wrapper around MS's cl.exe to make it act more like Unix cc
#
# Copyright (C) 2000-2015 by contributors listed in the AUTHORS file.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
# Modified for radare2 purposes


usage()
{
    cat <<EOF
Usage: cccl [--cccl-link] [--cccl-muffle] [--cccl-verbose] [--help] [--version]
       [OPTIONS]

cccl is a wrapper around Microsoft's cl.exe compiler.  It translates parameters
given by [OPTIONS] that Unix cc understands into parameters that cl understands.
EOF
}

case ${MACHTYPE} in
    *-msys)
        slash="-"
        ;;
    *)
        slash="/"
        ;;
esac

# prog specifies the program that should be run cl.exe
prog=cl
# opts specifies the command line to pass to the MSVC program
clopt="${slash}nologo"
linkopt="${slash}link"
debug=
# gotparam is 0 if we didn't ever see a param, in which case we show usage()
gotparam=
muffle=
verbose=
shared_index=-1

processargs()
{
### Run through every option and convert it to the proper MS one
while test $# -gt 0; do
    case "$1" in
    -D*) optarg= ;;
    -*=*) optarg=$(echo "$1" | sed 's,[-_a-zA-Z0-9]*=,,') ;;
    *) optarg= ;;
    esac
    gotparam=1

    case "$1" in
    --help)
        usage
        exit 0
        ;;

    --cccl-link)
        # One single option for the linker
        shift
        case "$1" in
        /*)
            val=$(echo "$1" | cut -c2-)
            linkopt="${linkopt} ${slash}${val}"
            ;;

        *)
            linkopt="${linkopt} $1"
            ;;
        esac
        ;;

    --cccl-muffle)
        # Remove the unnecessary junk that the compiler outputs to stdout
        muffle=1
        ;;

    --cccl-verbose)
        verbose=1
        ;;

    --version)
        cat <<EOF
cccl 1.0
EOF
        exit 0;
        ;;

    -ansi)
        clopt="${clopt},${slash}Za"
        ;;

    -c)
        # -c (compile only) is actually the same, but for clarity...
        clopt="${clopt},${slash}c"
        ;;

    -g[0-9] | -g)
        # cl only supports one debugging level
        clopt="${clopt},${slash}Zi"
        debug=1
        ;;

    -O0)
        clopt="${clopt},${slash}Ot"
        ;;

    -O2)
        clopt="${clopt},${slash}O2"
        ;;

    -I*)
        path=$(echo "$1" | sed 's,-I,,')
        path=$(cygpath -aw "$path")
        clopt="${clopt},${slash}I${path}"
        ;;

    -L*)
        path=$(echo "$1" | sed 's,-L,,')
        path=$(cygpath -aw "$path")
        linkopt="${linkopt},${slash}LIBPATH:$path"
        ;;

    -l*)
        lib=$(echo "$1" | sed 's,-l,,')
        lib="$lib.lib"
        clopt="${clopt},${lib}"
        ;;

    -m386)
        clopt="${clopt},${slash}G3"
        ;;

    -m486)
        clopt="${clopt},${slash}G4"
        ;;

    -mpentium)
        clopt="${clopt},${slash}G5"
        ;;

    -mpentiumpro)
        clopt="${clopt},${slash}G6"
        ;;

    -o)
        # specifying output file, is it an object or an executable
        shift
        path=$(cygpath -w "$1")
        case "${path}" in
        *.o | *.obj)
            clopt="${clopt},${slash}Fo${path}"
            ;;

        *.exe | *.dll | *.pyd)
            clopt="${clopt},${slash}Fe${path}"
            ;;
        *)
            echo "Warning: Could not understand -o directive. Producing .exe by default."
            clopt="${clopt},${slash}Fe${path}.exe"
            ;;
        esac
        ;;

    -pedantic)
        #ignore pedantic
        ;;

    -W*)
        #ignore warnings
        ;;

    -fno-strict-aliasing*)
        #ignore aliasing
        ;;

    -isystem)
        shift
        clopt="${clopt},${slash}I$1"
        ;;

    -MT)
        exit 0
        ;;

    -mno-cygwin)
        ;;

    -shared)
        shared_index=${#clopt[@]}
        clopt="${clopt},${slash}LD"
        ;;

    -std=*)
        #ignore std
        ;;

    -MMD)
        #ignore MMD
        ;;

    -fPIC)
        #ignore fPIC
        ;;

    -*)
        # Remaining '-' options are passed to the compiler
        val=$(echo "$1" | cut -c2-)
        if test x$optarg != x ; then
            clopt="${clopt},${slash}${val}=$optarg"
        else
            clopt="${clopt},${slash}${val}"
        fi
        ;;

    *.cc | *.cxx | *.C)
        # C++ source file with non .cpp extension, make sure cl understand
        # that it is C++
        clopt="${clopt},${slash}Tp$1"
        ;;

    *.c)
        # Translate it into windows path in case it's a linux absolute path
        # Because /cygdrive/d/wtf would be read as an option
        path=$(cygpath -w "$1")
        clopt="${clopt},${path}"
        ;;

    *.a)
        # Translate it into .lib and make sure it's a windows path cf above
        path=$(cygpath -w "$1" | sed 's,\.a,.lib,')
        clopt="${clopt},${path}"
        ;;

    /link)
        # Same behaviour as cl - all options after /link are linker options
        shift
        while test $# -gt 0; do
            case "$1" in
            /*)
                val=$(echo "$1" | cut -c2-)
                linkopt="${linkopt},${slash}${val}"
                ;;

            *)
                linkopt="${linkopt},$1"
                ;;
            esac
            shift
        done
        ;;
    /*/*)
	# If there are multiple slashes, then it's an absolute path
        path=$(cygpath -aw "$1")
        clopt="${clopt},${path}"
	;;

    /*)
	# All '/' options (except the one above) are assumed to be options
        val=$(echo "$1" | cut -c2-)
        clopt="${clopt},${slash}${val}"
        ;;

    *)
        clopt="${clopt},$1"
        ;;

    esac
    shift
done
}

# Whitespace in paths is dealt with by setting IFS and using bash arrays
# Except additional arguments in CCCL_OPTIONS need to be space separated
processargs ${CCCL_OPTIONS}
IFS=""
processargs $@

if test "$shared_index" -ge 0 -a -n "$debug"; then
    clopt[$shared_index]="${slash}LDd"
fi

if test x$gotparam = x ; then
    usage
    exit 1
fi

if test "x$V" = "x1" ; then
    verbose=1
fi

IFS=","
if test -n "$verbose" ; then
  printf "%s" "$prog"
  for opt in ${clopt} ; do
    printf "%s" " \"$opt\""
  done
  for opt in ${linkopt} ; do
    printf "%s" " \"$opt\""
  done
  echo ""
fi

if test -z "$muffle" ; then
    exec $prog $clopt $linkopt
else
  # tr needed below for $ in regex to work (simple alternative to dos2unix)
    exec $prog $clopt $linkopt | tr -d '\r' | grep -v -e "\.cpp$" -e "\.cxx$" -e "\.cc$" -e "\.C$" -e "\.c$" -e "^   Creating library" -e "^Generating Code"
    exit $?
fi