mirror of
https://github.com/panda3d/panda3d.git
synced 2025-10-20 22:20:59 -04:00
71 lines
2.2 KiB
CMake
71 lines
2.2 KiB
CMake
# Filename: ConcatenateToCXX.cmake
|
|
#
|
|
# Description: When run, creates a single C++ file which includes a const char[]
|
|
# containing the bytes from one or more files.
|
|
#
|
|
# There is a {SYMBOL_NAME}_size symbol defined as well, storing the total
|
|
# number of bytes in the concatenated input files.
|
|
#
|
|
# A single null terminator byte is added for the benefit of programs that
|
|
# simply treat the data array as a string.
|
|
#
|
|
# Usage:
|
|
# This script is invoked via add_custom_target, like this:
|
|
# cmake -D OUTPUT_FILE="out.cxx" -D SYMBOL_NAME=data -D INPUT_FILES="a.bin b.bin" -P ConcatenateToCXX.cmake
|
|
#
|
|
|
|
if(NOT CMAKE_SCRIPT_MODE_FILE)
|
|
message(FATAL_ERROR "ConcatenateToCXX.cmake should not be included but run in script mode.")
|
|
return()
|
|
endif()
|
|
|
|
if(NOT DEFINED OUTPUT_FILE)
|
|
message(FATAL_ERROR "OUTPUT_FILE should be defined when running ConcatenateToCXX.cmake!")
|
|
return()
|
|
endif()
|
|
|
|
if(NOT DEFINED SYMBOL_NAME)
|
|
set(SYMBOL_NAME "data")
|
|
endif()
|
|
|
|
file(WRITE "${OUTPUT_FILE}" "/* Generated by CMake. DO NOT EDIT. */
|
|
|
|
extern const char ${SYMBOL_NAME}[];
|
|
extern const int ${SYMBOL_NAME}_size;
|
|
|
|
const char ${SYMBOL_NAME}[] = {\n")
|
|
|
|
set(byte_count 0)
|
|
separate_arguments(INPUT_FILES)
|
|
foreach(infile ${INPUT_FILES})
|
|
file(APPEND "${OUTPUT_FILE}" " /* ${infile} */\n")
|
|
|
|
set(offset 0)
|
|
while(1)
|
|
# Read up to 1024 bytes from the input file
|
|
file(READ "${infile}" data LIMIT 1024 OFFSET ${offset} HEX)
|
|
math(EXPR offset "${offset} + 1024")
|
|
|
|
# If 'data' is empty, we're done
|
|
if(NOT data)
|
|
break()
|
|
endif()
|
|
|
|
# Count the bytes we're adding
|
|
string(LENGTH "${data}" strlen)
|
|
math(EXPR byte_count "${byte_count} + (${strlen} / 2)")
|
|
|
|
# Format runs of up to 32 hex chars by indenting and giving a newline
|
|
string(REGEX REPLACE
|
|
"(...?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?.?)" " \\1\n"
|
|
data "${data}")
|
|
# Format each byte (2 hex chars) in each line with 0x prefix and comma suffix
|
|
string(REGEX REPLACE "([0-9a-fA-F][0-9a-fA-F])" " 0x\\1," data "${data}")
|
|
file(APPEND "${OUTPUT_FILE}" "${data}")
|
|
endwhile()
|
|
endforeach(infile)
|
|
|
|
file(APPEND "${OUTPUT_FILE}" " 0\n};
|
|
|
|
extern const int ${SYMBOL_NAME}_size = ${byte_count};\n")
|