library.js

var FFI = require("./ffi");

// Provides a friendly abstraction/API on-top of DynamicLibrary and ForeignFunction
var Library = module.exports = function(libfile, funcs, options) {
    var dl = new FFI.DynamicLibrary(
        libfile == null ? null : libfile + FFI.PLATFORM_LIBRARY_EXTENSIONS[process.platform],
        FFI.DynamicLibrary.FLAGS.RTLD_NOW
    );
  
    for (var k in funcs) {
        var fptr = dl.get(k);
        
        if (fptr.isNull()) throw new Error("DynamicLibrary returned NULL function pointer.");
        
        var resultType  = funcs[k][0],
            paramTypes  = funcs[k][1],
            fopts       = funcs[k][2];
        
        this[k] = FFI.ForeignFunction.build(fptr, resultType, paramTypes, fopts ? fopts.async : undefined);
    }
};