#!/bin/bash
#
# Copyright (C) 2014-2019 Apple Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
# THE POSSIBILITY OF SUCH DAMAGE.
#

if [[ -z "${SCRIPT_HEADER_VISIBILITY}" ]]; then
    exit 0
fi

function process_definitions () {
    local DEFINITIONS_FILE=$1

    if [[ ! -f "${DEFINITIONS_FILE}" ]]; then
        return 1
    fi

    source "${DEFINITIONS_FILE}"
}

DEFINITIONS_PATH=usr/local/include/WebKitAdditions/Scripts/postprocess-framework-headers-definitions

process_definitions "${BUILT_PRODUCTS_DIR}/${DEFINITIONS_PATH}" || process_definitions "${SDKROOT}/${DEFINITIONS_PATH}"

# Determine what postprocessor steps to run based on build settings and the file being
# processed, then pipe together all the commands we need and write the output file.
# FIXME: rdar://90704735 (Run unifdef more uniformly on all WebKit.framework headers)

if [[ "${WK_FRAMEWORK_HEADER_POSTPROCESSING_DISABLED}" != "YES" ]]; then
    if [[ "${WK_PLATFORM_NAME}" == "macosx" ]]; then
        [[ -n ${OSX_VERSION} ]] || OSX_VERSION=${MACOSX_DEPLOYMENT_TARGET}
        [[ -n ${IOS_VERSION} ]] || IOS_VERSION="NA"
    elif [[ "${WK_PLATFORM_NAME}" =~ "iphone" ]]; then
        [[ -n ${IOS_VERSION} ]] || IOS_VERSION=${IPHONEOS_DEPLOYMENT_TARGET}
        [[ -n ${OSX_VERSION} ]] || OSX_VERSION="NA"
    fi

    SED_OPTIONS=()

    if [[ -n "$OSX_VERSION" && -n "$IOS_VERSION" ]]; then
        SED_OPTIONS+=(
            -e s/WK_MAC_TBA/${OSX_VERSION}/g
            -e s/WK_IOS_TBA/${IOS_VERSION}/g
            -e s/WK_API_AVAILABLE/API_AVAILABLE/
            -e s/WK_API_UNAVAILABLE/API_UNAVAILABLE/
            -e s/WK_API_DEPRECATED/API_DEPRECATED/
            -e "s/^WK_CLASS_AVAILABLE/WK_EXTERN API_AVAILABLE/"
            -e "s/^WK_CLASS_DEPRECATED/WK_EXTERN API_DEPRECATED/"
        )
    else
        SED_OPTIONS+=(
            -e 's/WK_(API_|CLASS_)AVAILABLE\(.*\)\s*\)//g'
            -e 's/WK_API_UNAVAILABLE\(.*\)//g'
            -e 's/WK_(API_|CLASS_)DEPRECATED(_WITH_REPLACEMENT)?\(.*\)\s*\)//g'
        )
    fi

    SED_OPTIONS+=(${OTHER_SED_OPTIONS[*]})
fi

UNIFDEF_OPTIONS=(-B)

case "${INPUT_FILE_PATH}" in
*/WKBase.h)
    UNIFDEF_OPTIONS+=(-D__APPLE__ -UBUILDING_GTK__ -UBUILDING_WPE__ -UUSE_SOUP)
    ;;
*/WKFoundation.h)
    if [[ "${WK_FRAMEWORK_HEADER_POSTPROCESSING_DISABLED}" == "YES" ]]; then
        UNIFDEF_OPTIONS+=(-UWK_FRAMEWORK_HEADER_POSTPROCESSING_ENABLED)
    else
        UNIFDEF_OPTIONS+=(-DWK_FRAMEWORK_HEADER_POSTPROCESSING_ENABLED)
    fi
    ;;
*/WebKitLegacy.h)
    [ "${WK_PLATFORM_NAME}" = macosx ]
    UNIFDEF_OPTIONS+=(-DTARGET_OS_IPHONE=$?)
    ;;
*/WebKitLegacy/*)
    [ "${USE_INTERNAL_SDK}" != YES ]
    UNIFDEF_OPTIONS+=(-DUSE_APPLE_INTERNAL_SDK=$?)
    [ "${WK_PLATFORM_NAME}" = macosx ]
    UNIFDEF_OPTIONS+=(-DTARGET_OS_IPHONE=$?)
    [[ "${WK_PLATFORM_NAME}" != *simulator* ]]
    UNIFDEF_OPTIONS+=(-DTARGET_OS_SIMULATOR=$?)

    for featureDefine in "ENABLE_TOUCH_EVENTS" "ENABLE_IOS_GESTURE_EVENTS"
    do
        # We assume a disabled feature is either undefined or has the empty string as its value.
        eval "isFeatureEnabled=\$$featureDefine"
        test -z $isFeatureEnabled
        UNIFDEF_OPTIONS+=(-D$featureDefine=$?)
    done

    SED_OPTIONS+=(-e "s/\<WebKitLegacy/\<WebKit/")
    if [[ "${SOURCE_FILE}" != */WebKitAvailability.h ]] && [ ${WK_PLATFORM_NAME} != macosx ]; then
        SED_OPTIONS+=(-e "s/ *WEBKIT_((CLASS_|ENUM_)?(AVAILABLE|DEPRECATED))_MAC\([^)]+\)//g")
    fi
    ;;
*/WebCore/*)
    [ "${USE_INTERNAL_SDK}" != YES ]
    UNIFDEF_OPTIONS+=(-DUSE_APPLE_INTERNAL_SDK=$?)
    [ "${WK_PLATFORM_NAME}" = macosx ]
    UNIFDEF_OPTIONS+=(-DTARGET_OS_IPHONE=$?)
    [[ "${WK_PLATFORM_NAME}" != *simulator* ]]
    UNIFDEF_OPTIONS+=(-DTARGET_OS_SIMULATOR=$?)

    for featureDefine in "ENABLE_TOUCH_EVENTS" "ENABLE_IOS_GESTURE_EVENTS"
    do
        # We assume a disabled feature is either undefined or has the empty string as its value.
        eval "isFeatureEnabled=\$$featureDefine"
        test -z $isFeatureEnabled
        UNIFDEF_OPTIONS+=(-D$featureDefine=$?)
    done

    SED_OPTIONS+=(-e 's/<WebCore\//<WebKit\//' -e "s/(^ *)WEBCORE_EXPORT /\1/")
esac

# As a performance optimization, only run replace-webkit-additions-includes.py if we know we need it.
if grep -q '#import <WebKitAdditions/.*\.h>' "${INPUT_FILE_PATH}"; then
    REPLACE_WEBKIT_ADDITIONS_INCLUDES=(python3 "${SRCROOT}/mac/replace-webkit-additions-includes.py" "${BUILT_PRODUCTS_DIR}" "${SDKROOT}")
else
    REPLACE_WEBKIT_ADDITIONS_INCLUDES=cat
fi

${REPLACE_WEBKIT_ADDITIONS_INCLUDES[@]} < "${INPUT_FILE_PATH}" |
sed -E "${SED_OPTIONS[@]}" |
unifdef ${UNIFDEF_OPTIONS[@]} > "${SCRIPT_OUTPUT_FILE_0}"
exits=(${PIPESTATUS[@]})
[ ${exits[0]} -eq 0 -a ${exits[1]} -eq 0 -a ${exits[2]} -lt 2 ]