mirror of
https://github.com/janet-lang/janet
synced 2024-12-26 00:10:27 +00:00
84 lines
3.5 KiB
CMake
84 lines
3.5 KiB
CMake
|
# From https://gist.github.com/sivachandran/3a0de157dccef822a230
|
||
|
|
|
||
|
|
include(CMakeParseArguments)
|
||
|
|
|
||
|
|
# Function to wrap a given string into multiple lines at the given column position.
|
||
|
|
# Parameters:
|
||
|
|
# VARIABLE - The name of the CMake variable holding the string.
|
||
|
|
# AT_COLUMN - The column position at which string will be wrapped.
|
||
|
|
function(WRAP_STRING)
|
||
|
|
set(oneValueArgs VARIABLE AT_COLUMN)
|
||
|
|
cmake_parse_arguments(WRAP_STRING "${options}" "${oneValueArgs}" "" ${ARGN})
|
||
|
|
|
||
|
|
string(LENGTH ${${WRAP_STRING_VARIABLE}} stringLength)
|
||
|
|
math(EXPR offset "0")
|
||
|
|
|
||
|
|
while(stringLength GREATER 0)
|
||
|
|
|
||
|
|
if(stringLength GREATER ${WRAP_STRING_AT_COLUMN})
|
||
|
|
math(EXPR length "${WRAP_STRING_AT_COLUMN}")
|
||
|
|
else()
|
||
|
|
math(EXPR length "${stringLength}")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
string(SUBSTRING ${${WRAP_STRING_VARIABLE}} ${offset} ${length} line)
|
||
|
|
set(lines "${lines}\n${line}")
|
||
|
|
|
||
|
|
math(EXPR stringLength "${stringLength} - ${length}")
|
||
|
|
math(EXPR offset "${offset} + ${length}")
|
||
|
|
endwhile()
|
||
|
|
|
||
|
|
set(${WRAP_STRING_VARIABLE} "${lines}" PARENT_SCOPE)
|
||
|
|
endfunction()
|
||
|
|
|
||
|
|
# Function to embed contents of a file as byte array in C/C++ header file(.h). The header file
|
||
|
|
# will contain a byte array and integer variable holding the size of the array.
|
||
|
|
# Parameters
|
||
|
|
# SOURCE_FILE - The path of source file whose contents will be embedded in the header file.
|
||
|
|
# VARIABLE_NAME - The name of the variable for the byte array. The string "_SIZE" will be append
|
||
|
|
# to this name and will be used a variable name for size variable.
|
||
|
|
# HEADER_FILE - The path of header file.
|
||
|
|
# APPEND - If specified appends to the header file instead of overwriting it
|
||
|
|
# NULL_TERMINATE - If specified a null byte(zero) will be append to the byte array. This will be
|
||
|
|
# useful if the source file is a text file and we want to use the file contents
|
||
|
|
# as string. But the size variable holds size of the byte array without this
|
||
|
|
# null byte.
|
||
|
|
# Usage:
|
||
|
|
# bin2h(SOURCE_FILE "Logo.png" HEADER_FILE "Logo.h" VARIABLE_NAME "LOGO_PNG")
|
||
|
|
function(BIN2H)
|
||
|
|
set(options APPEND NULL_TERMINATE)
|
||
|
|
set(oneValueArgs SOURCE_FILE VARIABLE_NAME HEADER_FILE)
|
||
|
|
cmake_parse_arguments(BIN2H "${options}" "${oneValueArgs}" "" ${ARGN})
|
||
|
|
|
||
|
|
# reads source file contents as hex string
|
||
|
|
file(READ ${BIN2H_SOURCE_FILE} hexString HEX)
|
||
|
|
string(LENGTH ${hexString} hexStringLength)
|
||
|
|
|
||
|
|
# appends null byte if asked
|
||
|
|
if(BIN2H_NULL_TERMINATE)
|
||
|
|
set(hexString "${hexString}00")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
# wraps the hex string into multiple lines at column 32(i.e. 16 bytes per line)
|
||
|
|
wrap_string(VARIABLE hexString AT_COLUMN 32)
|
||
|
|
math(EXPR arraySize "${hexStringLength} / 2")
|
||
|
|
|
||
|
|
# adds '0x' prefix and comma suffix before and after every byte respectively
|
||
|
|
string(REGEX REPLACE "([0-9a-f][0-9a-f])" "0x\\1, " arrayValues ${hexString})
|
||
|
|
# removes trailing comma
|
||
|
|
string(REGEX REPLACE ", $" "" arrayValues ${arrayValues})
|
||
|
|
|
||
|
|
# converts the variable name into proper C identifier
|
||
|
|
string(MAKE_C_IDENTIFIER "${BIN2H_VARIABLE_NAME}" BIN2H_VARIABLE_NAME)
|
||
|
|
|
||
|
|
# declares byte array
|
||
|
|
set(arrayDefinition "const unsigned char ${BIN2H_VARIABLE_NAME}[] = { ${arrayValues} };")
|
||
|
|
|
||
|
|
set(declarations "${arrayDefinition}\n\n${arraySizeDefinition}\n\n")
|
||
|
|
if(BIN2H_APPEND)
|
||
|
|
file(APPEND ${BIN2H_HEADER_FILE} "${declarations}")
|
||
|
|
else()
|
||
|
|
file(WRITE ${BIN2H_HEADER_FILE} "${declarations}")
|
||
|
|
endif()
|
||
|
|
endfunction()
|