#!/bin/bash
#
# Copyright (c) 2024 Martin Storsjo
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

get_dir() {
    target="$1"
    while [ -L "$target" ]; do
        cd "$(dirname "$target")"
        target="$(readlink "$(basename "$target")")"
    done
    cd "$(dirname "$target")"
    pwd
}

DIR="$(get_dir "$0")"

# If changing this wrapper, change clang-scan-deps-wrapper.c accordingly.
EXE="$DIR/clang-scan-deps"
FLAGS=()
while [ $# -gt 0 ]; do
    if [ -n "$got_flags" ]; then
        CMD_EXE="$1"
        FLAGS+=("$1")
        shift
        break
    elif [ "$1" = "--" ]; then
        got_flags=1
        FLAGS+=("$1")
    else
        FLAGS+=("$1")
    fi
    shift
done

if [ -n "$CMD_EXE" ]; then
    CMD_BASENAME="$(basename "$CMD_EXE")"
    CMD_BASENAME="${CMD_BASENAME%.*}"
    CMD_TARGET="${CMD_BASENAME%-*}"
    CMD_EXE_SUFFIX="${CMD_BASENAME##*-}"
    if [ "$CMD_TARGET" != "$CMD_BASENAME" ]; then
        case $CMD_EXE_SUFFIX in
        clang|clang++|gcc|g++|c++|as|cc|c99|c11)
            IS_CLANG=1
            ;;
        esac
    fi
fi

if [ -n "$IS_CLANG" ]; then
    "$EXE" "${FLAGS[@]}" -stdlib=libc++ "$@"
else
    "$EXE" "${FLAGS[@]}" "$@"
fi