mirror of
https://github.com/Not-Nik/raylib-zig.git
synced 2025-09-09 20:17:28 +00:00
105 lines
3.3 KiB
Python
105 lines
3.3 KiB
Python
import re
|
|
|
|
"""
|
|
Automatic utility for generating raylib function headers. Simply put
|
|
raylib.h in the working directory of this script and execute.
|
|
Tested with raylib version 3.0.0
|
|
"""
|
|
|
|
|
|
# Some c types have a different size on different systems
|
|
# and zig knows that so we tell it to get the system specific size for us
|
|
def c_to_zig_type(t: str) -> str:
|
|
t = t.replace("const ", "")
|
|
if t == "float":
|
|
t = "f32"
|
|
if t == "int":
|
|
t = "c_int"
|
|
if t == "unsigned int":
|
|
t = "c_uint"
|
|
if t == "long":
|
|
t = "c_long"
|
|
if t == "char":
|
|
t = "u8"
|
|
if t == "unsigned char":
|
|
t = "u8"
|
|
return t
|
|
|
|
|
|
def fix_pointer(name: str, t: str):
|
|
t = t.replace("const ", "")
|
|
pre = ""
|
|
while name.startswith("*"):
|
|
name = name[1:]
|
|
pre += "[*c]"
|
|
if len(pre) != 0:
|
|
t = pre + "const " + t
|
|
return name, t
|
|
|
|
|
|
def fix_enums(arg_name, arg_type, func_name):
|
|
# Hacking specifc enums in here
|
|
# Raylib doesn't use the enums but rather the resulting ints
|
|
if arg_type == "int":
|
|
if arg_name == "key":
|
|
arg_type = "KeyboardKey"
|
|
elif arg_name == "button":
|
|
arg_type = "MouseButton"
|
|
elif arg_name == "mode" and func_name == "SetCameraMode":
|
|
arg_type = "CameraMode"
|
|
return arg_type
|
|
|
|
|
|
small_structs = ["Vector2", "Vector3", "Vector4", "Quaternion", "Color", "Rectangle", "Shader"]
|
|
|
|
|
|
def parse_header(header_name: str, output_file: str, prefix: str):
|
|
header = open(header_name, mode="r")
|
|
zig_functions = []
|
|
zig_heads = []
|
|
|
|
for line in header.readlines():
|
|
if not line.startswith(prefix):
|
|
continue
|
|
|
|
line = line.split(";", 1)[0]
|
|
# each (.*) is some variable value
|
|
result = re.search(prefix + "(.*) (.*)start_arg(.*)end_arg(.*)", line.replace("(", "start_arg").replace(")", "end_arg"))
|
|
|
|
# get whats in the (.*)'s
|
|
return_type = result.group(1)
|
|
func_name = result.group(2)
|
|
arguments = result.group(3)
|
|
|
|
return_type = c_to_zig_type(return_type)
|
|
func_name, return_type = fix_pointer(func_name, return_type)
|
|
|
|
zig_arguments = []
|
|
for arg in arguments.split(", "):
|
|
if arg == "void":
|
|
break
|
|
if arg == "...":
|
|
zig_arguments.append("...")
|
|
continue
|
|
arg_type = " ".join(arg.split(" ")[0:-1]) # everything but the last element (for stuff like "const Vector3")
|
|
arg_type = arg_type.replace("const ", "") # we'll add that later if needed
|
|
arg_name = arg.split(" ")[-1] # last element should be the name
|
|
arg_type = fix_enums(arg_name, arg_type, func_name)
|
|
|
|
arg_type = c_to_zig_type(arg_type)
|
|
arg_name, arg_type = fix_pointer(arg_name, arg_type)
|
|
zig_arguments.append(arg_name + ": " + arg_type) # put everything together
|
|
zig_arguments = ", ".join(zig_arguments)
|
|
zig_heads.append("pub extern fn " + func_name + "(" + zig_arguments + ") " + return_type + ";")
|
|
|
|
zigheader = open(output_file, mode="w")
|
|
print("usingnamespace @import(\"raylib-zig.zig\");\n", file=zigheader)
|
|
|
|
print("\n".join(zig_heads), file=zigheader)
|
|
print("", file=zigheader)
|
|
print("\n".join(zig_functions), file=zigheader)
|
|
|
|
|
|
parse_header("raylib.h", "raylib-wa.zig", "RLAPI ")
|
|
parse_header("raymath.h", "raylib-zig-math.zig", "RMDEF ")
|