cmake_minimum_required(VERSION 3.10)
project(libvterm LANGUAGES C)

include(GNUInstallDirs)
find_package(Perl)

if(MSVC)
  add_compile_options(/W3)
  add_definitions(-D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_DEPRECATE)
else()
  add_compile_options(-Wall -std=c99)
endif()

# Generate includes from tables
file(GLOB TBL_FILES ${CMAKE_SOURCE_DIR}/src/encoding/*.tbl)
set(TBL_FILES_HEADERS)
foreach(file ${TBL_FILES})
  get_filename_component(basename ${file} NAME_WE)
  set(tname encoding/${basename}.inc)
  add_custom_command(OUTPUT
    COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/encoding/
    COMMAND ${CMAKE_COMMAND} -P ${CMAKE_SOURCE_DIR}/tbl2inc_c.cmake ${file} ${CMAKE_BINARY_DIR}/${tname}
    COMMENT "Generating ${tname}"
    OUTPUT ${CMAKE_BINARY_DIR}/${tname}
    )
  list(APPEND TBL_FILES_HEADERS ${tname})
  # Only used for verifying that the output of tbl2inc_c.cmake is correct
  set(tname encoding-test/${basename}.inc)
  add_custom_command(OUTPUT
    COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/encoding-test/
    COMMAND ${PERL_EXECUTABLE} -CSD ${CMAKE_SOURCE_DIR}/tbl2inc_c.pl ${file} > ${CMAKE_BINARY_DIR}/${tname}
    COMMENT "Generating ${tname}"
    OUTPUT ${CMAKE_BINARY_DIR}/${tname}
    )
endforeach()

include_directories(${CMAKE_SOURCE_DIR}/include)
include_directories(${CMAKE_BINARY_DIR})

file(GLOB VTERM_SOURCES ${CMAKE_SOURCE_DIR}/src/*.c)
add_library(vterm ${VTERM_SOURCES} ${TBL_FILES_HEADERS})
install(TARGETS vterm ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})

install(FILES include/vterm.h include/vterm_keycodes.h
  DESTINATION include)

if(NOT WIN32)
  file(GLOB BIN_SOURCES ${CMAKE_SOURCE_DIR}/bin/*.c)
  foreach(EXE_C ${BIN_SOURCES})
    get_filename_component(target_name ${EXE_C} NAME_WE)
    add_executable(${target_name} ${EXE_C})
    target_link_libraries(${target_name} vterm)
    install(TARGETS ${target_name} RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
  endforeach()
endif()

# Tests
add_executable(harness EXCLUDE_FROM_ALL t/harness.c)
target_link_libraries(harness vterm)
set_target_properties(harness PROPERTIES
  # run-test.pl expects to find the harness in t/.libs/
  RUNTIME_OUTPUT_DIRECTORY t/.libs)

if(Perl_FOUND)
  file(GLOB TESTFILES ${CMAKE_SOURCE_DIR}/t/*.test)
  add_custom_target(check)
  foreach(testfile ${TESTFILES})
    get_filename_component(target_name ${testfile} NAME_WE)
    add_custom_target(${target_name}
      COMMAND ${PERL_EXECUTABLE} ${CMAKE_SOURCE_DIR}/t/run-test.pl ${testfile}
      COMMENT "**${target_name} **"
      DEPENDS harness)
    add_dependencies(check ${target_name})
  endforeach()

  foreach(header_path ${TBL_FILES_HEADERS})
    get_filename_component(header_name ${header_path} NAME)
    set(perl_header_path ${CMAKE_BINARY_DIR}/encoding-test/${header_name})
    add_custom_target(test-${header_name}
      COMMAND ${CMAKE_COMMAND} -E compare_files
              ${header_path} ${perl_header_path}
      DEPENDS ${header_path} ${perl_header_path})
  endforeach()
endif()