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#! /usr/bin/env bash

# Common cl.exe driver that expects the VC, INCLUDE, and LIB variables to
# be set for the specific MSVC version/configuration set.

trap "{ exit 1; }" ERR
set -o errtrace # Trap in functions.

function info () { echo "$*" 1>&2; }
function error () { info "$*"; exit 1; }

source $(dirname $(realpath ${BASH_SOURCE[0]}))/msvc-common

# File descriptor where the diagnostics will be sent. Unless STDOUT is used
# for something else (e.g., /E), cl.exe sends the diagnostics there.
# Otherwise it goes to STDERR.
#
diag=1

# Translate absolute paths from POSIX to Windows. Use bash array to store
# arguments in case they contain spaces.
#
# This needs to be done for both certain option values and arguments.
# Arguments are tricky in that unless we recognize every option, and option
# may look a lot like an absolute POSIX path (e.g., /nologo). The heuristics
# that we are going to use here is that if the argument starts with / and
# contains at least one more /, then we consider it an argument. Otherwise --
# an options. We will also explicitly recognize certain options, like /D,
# which may not fit this scheme well.
#
# Note that the order of the cases is important. Specifically, we want, e.g.,
# /D before /D*.
#
args=()

while [ $# -gt 0 ]; do
  case $1 in

    # /I <dir>, /AI <dir>
    #
    [/-]I | \
    [/-]AI)
      args=("${args[@]}" "$1")
      shift
      args=("${args[@]}" "$(translate $1)")
      shift
      ;;

    # /I<dir>
    #
    [/-]I*)
      args=("${args[@]}" "$(split_translate 2 $1)")
      shift
      ;;

    # /AI<dir>
    #
    [/-]AI*)
      args=("${args[@]}" "$(split_translate 3 $1)")
      shift
      ;;

    # /F*: <file>
    #
    [/-]F[adeimoprR]:)
      args=("${args[@]}" "$1")
      shift
      args=("${args[@]}" "$(translate $1)")
      shift
      ;;

    # /F*<file>, /T{p,c}<file>, /Yu<file>.
    #
    [/-]F[adeimoprRUI]* | \
    [/-]Tp*             | \
    [/-]Tc*             | \
    [/-]Yu*)
      args=("${args[@]}" "$(split_translate 3 $1)")
      shift
      ;;

    # /doc<file>
    #
    [/-]doc*)
      args=("${args[@]}" "$(split_translate 4 $1)")
      shift
      ;;

    # @<file>
    #
    @*)
      args=("${args[@]}" "$(split_translate 1 $1)")
      shift
      ;;

    # Handle other options with separate values. This makes sure we don't try
    # to path-translate them.
    #
    [/-]D | \
    [/-]U | \
    [/-]link)
      args=("${args[@]}" "$1")
      shift
      args=("${args[@]}" "$1")
      shift
      ;;

    # Handle other options with combined values that could possibly be
    # interpreted as paths, for example /DFOO=foo/bar.
    #
    [/-]D* | \
    [/-]V* | \
    [/-]Yl*)
      args=("${args[@]}" "$1")
      shift
      ;;

    # Detect /E and /EP -- they change where the diagnostics is sent.
    #
    [/-]E | \
    [/-]EP)
      diag=2
      args=("${args[@]}" "$1")
      shift
      ;;

    # Option or argument.
    #
    *)
      # If contains at least two slashes, treat it as a path.
      #
      if [[ "$1" == /*/* ]]; then
	args=("${args[@]}" "$(translate $1)")
      else
	args=("${args[@]}" "$1")
      fi
      shift
      ;;
  esac
done

export INCLUDE
export LIB

msvc_exec $diag "$VC\\bin\\cl.exe" "${args[@]}"