forked from ibmruntimes/vsam.js
/
VsamFile.h
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/
VsamFile.h
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/*
* Licensed Materials - Property of IBM
* (C) Copyright IBM Corp. 2017. All Rights Reserved.
* US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
*/
#pragma once
#include <napi.h>
#include <uv.h>
#include <node_object_wrap.h>
#include <uv.h>
#include <string>
class VsamFile : public Napi::ObjectWrap<VsamFile> {
public:
static void Init(Napi::Env env, Napi::Object exports);
VsamFile(const Napi::CallbackInfo& info);
static Napi::Value OpenSync(const Napi::CallbackInfo& info);
static Napi::Value AllocSync(const Napi::CallbackInfo& info);
static Napi::Boolean Exist(const Napi::CallbackInfo& info);
~VsamFile();
private:
struct LayoutItem {
enum DataType {
STRING,
HEXADECIMAL
};
std::vector<char> name;
int maxLength;
DataType type;
LayoutItem(std::string& n, int m, DataType t) :
name(n.length()+1), maxLength(m), type(t) {
strcpy(&name[0], n.c_str());
}
};
/* Entry point from Javascript */
void Close(const Napi::CallbackInfo& info);
void Read(const Napi::CallbackInfo& info);
void Find(const Napi::CallbackInfo& info, int equality);
void FindEq(const Napi::CallbackInfo& info);
void FindGe(const Napi::CallbackInfo& info);
void FindFirst(const Napi::CallbackInfo& info);
void FindLast(const Napi::CallbackInfo& info);
void Update(const Napi::CallbackInfo& info);
void Write(const Napi::CallbackInfo& info);
void Delete(const Napi::CallbackInfo& info);
void Dealloc(const Napi::CallbackInfo& info);
/* Work functions */
static void Open(uv_work_t* req);
static void Alloc(uv_work_t* req);
static void Dealloc(uv_work_t* req);
static void Read(uv_work_t* req);
static void Find(uv_work_t* req);
static void Update(uv_work_t* req);
static void Write(uv_work_t* req);
static void Delete(uv_work_t* req);
/* Work callback functions */
static void OpenCallback(uv_work_t* req, int statusj);
static void AllocCallback(uv_work_t* req, int statusj);
static void DeallocCallback(uv_work_t* req, int statusj);
static void ReadCallback(uv_work_t* req, int status);
static void UpdateCallback(uv_work_t* req, int status);
static void WriteCallback(uv_work_t* req, int status);
static void DeleteCallback(uv_work_t* req, int status);
/* Private methods */
static Napi::Value Construct(const Napi::CallbackInfo& info, bool alloc);
/* Data */
static Napi::FunctionReference constructor_;
Napi::Env env_;
Napi::FunctionReference cb_;
std::string path_;
std::string omode_;
std::string key_;
char* keybuf_;
int keybuf_len_;
std::vector<LayoutItem> layout_;
int key_i_;
unsigned keylen_, reclen_;
FILE *stream_;
void *buf_;
int lastrc_;
int equality_;
std::string errmsg_;
};