# -*- cmake -*-
# Copyright 2024 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

FILE(READ "@binary_file@" binary_content HEX)

STRING(REGEX MATCHALL "([A-Fa-f0-9][A-Fa-f0-9])" separated_content ${binary_content})

SET(prefix "@prefix@")
STRING(TOUPPER "@prefix@" prefix_uppercase)
SET(binary_file "@binary_file@")
SET(output_header "@output_header@")
SET(output_source "@output_source@")
SET(output_data "")

SET(bytes 0)
FOREACH(token IN LISTS separated_content)
  IF(NOT bytes EQUAL 0)
    STRING(APPEND output_data ", ")
  ENDIF()
  MATH(EXPR line_pos "${bytes} & 0xF")
  IF(line_pos EQUAL 0)
    STRING(APPEND output_data "\n    ")
  ENDIF()

  STRING(APPEND output_data "0x${token}")

  MATH(EXPR bytes "${bytes} + 1")
ENDFOREACH()

CONFIGURE_FILE("@template_header@" "@output_header@" @ONLY)
CONFIGURE_FILE("@template_source@" "@output_source@" @ONLY)

FILE(WRITE @OUTPUT_BASENAME@.c "${output}")
