# Copyright (c) 2012, Intel Corporation Copyright (c) 2019 Sony Interactive
# Entertainment Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
# * 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.
# * Neither the name of Intel Corporation nor the names of its contributors may
#   be used to endorse or promote products derived from this software without
#   specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT OWNER OR 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.
#
# Try to find Harfbuzz include and library directories.
#
# After successful discovery, this will set for inclusion where needed:
# HarfBuzz_INCLUDE_DIRS - contains the HarfBuzz headers HarfBuzz_LIBRARIES -
# contains the HarfBuzz library

#[=======================================================================[.rst:
FindHarfBuzz
--------------

Find HarfBuzz headers and libraries.

Imported Targets
^^^^^^^^^^^^^^^^

``HarfBuzz::HarfBuzz``
  The HarfBuzz library, if found.

``HarfBuzz::ICU``
  The HarfBuzz ICU library, if found.

Result Variables
^^^^^^^^^^^^^^^^

This will define the following variables in your project:

``HarfBuzz_FOUND``
  true if (the requested version of) HarfBuzz is available.
``HarfBuzz_VERSION``
  the version of HarfBuzz.
``HarfBuzz_LIBRARIES``
  the libraries to link against to use HarfBuzz.
``HarfBuzz_INCLUDE_DIRS``
  where to find the HarfBuzz headers.
``HarfBuzz_COMPILE_OPTIONS``
  this should be passed to target_compile_options(), if the
  target is not used for linking

#]=======================================================================]

find_package(PkgConfig QUIET)
pkg_check_modules(PC_HARFBUZZ QUIET harfbuzz)
set(HarfBuzz_COMPILE_OPTIONS ${PC_HARFBUZZ_CFLAGS_OTHER})
set(HarfBuzz_VERSION ${PC_HARFBUZZ_CFLAGS_VERSION})

find_path(
  HarfBuzz_INCLUDE_DIR
  NAMES hb.h
  HINTS ${PC_HARFBUZZ_INCLUDEDIR} ${PC_HARFBUZZ_INCLUDE_DIRS}
  PATH_SUFFIXES harfbuzz
)

find_library(
  HarfBuzz_LIBRARY NAMES ${HarfBuzz_NAMES} harfbuzz
  HINTS ${PC_HARFBUZZ_LIBDIR} ${PC_HARFBUZZ_LIBRARY_DIRS}
)

if(HarfBuzz_INCLUDE_DIR AND NOT HarfBuzz_VERSION)
  if(EXISTS "${HarfBuzz_INCLUDE_DIR}/hb-version.h")
    file(READ "${HarfBuzz_INCLUDE_DIR}/hb-version.h" _harfbuzz_version_content)

    string(REGEX MATCH
                 "#define +HB_VERSION_STRING +\"([0-9]+\.[0-9]+\.[0-9]+)\""
                 _dummy "${_harfbuzz_version_content}"
    )
    set(HarfBuzz_VERSION "${CMAKE_MATCH_1}")
  endif()
endif()

if("${HarfBuzz_FIND_VERSION}" VERSION_GREATER "${HarfBuzz_VERSION}")
  message(
    FATAL_ERROR "Required version (" ${HarfBuzz_FIND_VERSION}
                ") is higher than found version (" ${HarfBuzz_VERSION} ")"
  )
endif()

# Find components
if(HarfBuzz_INCLUDE_DIR AND HarfBuzz_LIBRARY)
  set(_HarfBuzz_REQUIRED_LIBS_FOUND ON)
  set(HarfBuzz_LIBS_FOUND "HarfBuzz (required): ${HarfBuzz_LIBRARY}")
else()
  set(_HarfBuzz_REQUIRED_LIBS_FOUND OFF)
  set(HarfBuzz_LIBS_NOT_FOUND "HarfBuzz (required)")
endif()

if("ICU" IN_LIST HarfBuzz_FIND_COMPONENTS)
  pkg_check_modules(PC_HARFBUZZ_ICU QUIET harfbuzz-icu)
  set(HarfBuzz_ICU_COMPILE_OPTIONS ${PC_HARFBUZZ_ICU_CFLAGS_OTHER})

  find_path(
    HarfBuzz_ICU_INCLUDE_DIR
    NAMES hb-icu.h
    HINTS ${PC_HARFBUZZ_ICU_INCLUDEDIR} ${PC_HARFBUZZ_ICU_INCLUDE_DIRS}
    PATH_SUFFIXES harfbuzz
  )

  find_library(
    HarfBuzz_ICU_LIBRARY NAMES ${HarfBuzz_ICU_NAMES} harfbuzz-icu
    HINTS ${PC_HARFBUZZ_ICU_LIBDIR} ${PC_HARFBUZZ_ICU_LIBRARY_DIRS}
  )

  if(HarfBuzz_ICU_LIBRARY)
    if(HarfBuzz_FIND_REQUIRED_ICU)
      list(APPEND HarfBuzz_LIBS_FOUND "ICU (required): ${HarfBuzz_ICU_LIBRARY}")
    else()
      list(APPEND HarfBuzz_LIBS_FOUND "ICU (optional): ${HarfBuzz_ICU_LIBRARY}")
    endif()
  else()
    if(HarfBuzz_FIND_REQUIRED_ICU)
      set(_HarfBuzz_REQUIRED_LIBS_FOUND OFF)
      list(APPEND HarfBuzz_LIBS_NOT_FOUND "ICU (required)")
    else()
      list(APPEND HarfBuzz_LIBS_NOT_FOUND "ICU (optional)")
    endif()
  endif()
endif()

if(NOT HarfBuzz_FIND_QUIETLY)
  if(HarfBuzz_LIBS_FOUND)
    message(STATUS "Found the following HarfBuzz libraries:")
    foreach(found ${HarfBuzz_LIBS_FOUND})
      message(STATUS " ${found}")
    endforeach()
  endif()
  if(HarfBuzz_LIBS_NOT_FOUND)
    message(STATUS "The following HarfBuzz libraries were not found:")
    foreach(found ${HarfBuzz_LIBS_NOT_FOUND})
      message(STATUS " ${found}")
    endforeach()
  endif()
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
  HarfBuzz
  FOUND_VAR HarfBuzz_FOUND
  REQUIRED_VARS HarfBuzz_INCLUDE_DIR HarfBuzz_LIBRARY
                _HarfBuzz_REQUIRED_LIBS_FOUND
  VERSION_VAR HarfBuzz_VERSION
)

if(HarfBuzz_LIBRARY AND NOT TARGET HarfBuzz::HarfBuzz)
  add_library(HarfBuzz::HarfBuzz UNKNOWN IMPORTED GLOBAL)
  set_target_properties(
    HarfBuzz::HarfBuzz
    PROPERTIES IMPORTED_LOCATION "${HarfBuzz_LIBRARY}"
               INTERFACE_COMPILE_OPTIONS "${HarfBuzz_COMPILE_OPTIONS}"
               INTERFACE_INCLUDE_DIRECTORIES "${HarfBuzz_INCLUDE_DIR}"
  )
endif()

if(HarfBuzz_ICU_LIBRARY AND NOT TARGET HarfBuzz::ICU)
  add_library(HarfBuzz::ICU UNKNOWN IMPORTED GLOBAL)
  set_target_properties(
    HarfBuzz::ICU
    PROPERTIES IMPORTED_LOCATION "${HarfBuzz_ICU_LIBRARY}"
               INTERFACE_COMPILE_OPTIONS "${HarfBuzz_ICU_COMPILE_OPTIONS}"
               INTERFACE_INCLUDE_DIRECTORIES "${HarfBuzz_ICU_INCLUDE_DIR}"
  )
endif()

mark_as_advanced(
  HarfBuzz_INCLUDE_DIR HarfBuzz_ICU_INCLUDE_DIR HarfBuzz_LIBRARY
  HarfBuzz_ICU_LIBRARY
)

if(HarfBuzz_FOUND)
  set(HarfBuzz_LIBRARIES ${HarfBuzz_LIBRARY} ${HarfBuzz_ICU_LIBRARY})
  set(HarfBuzz_INCLUDE_DIRS ${HarfBuzz_INCLUDE_DIR} ${HarfBuzz_ICU_INCLUDE_DIR})
endif()
