CString

import { dlopen, FFIType, CString } from 'arkffi';

const lib = dlopen('libffi_target.so', {
  getVersion: { args: [], returns: FFIType.int64 },
});

const ptr: number = lib.symbols.getVersion();
const cstr = new CString(ptr);

cstr.toString(); // → "1.0.0"
cstr.length;     // → 5

lib.close();

constructor(ptr: number, byteOffset?: number, byteLength?: number);

const cstr = new CString(ptr, 0, 5);
cstr.toString(); // 读取前 5 个字节

get length(): number;

toString(): string;

const cstr = new CString(0);
cstr.toString(); // → ""
cstr.length;     // → 0