codebox/main.c

#define UNICODE

#if defined(UNICODE) && !defined(_UNICODE)
    #define _UNICODE
#elif defined(_UNICODE) && !defined(UNICODE)
    #define UNICODE
#endif

#include <stdio.h>
#include <wchar.h>
#include <tchar.h>
#include <windows.h>
#include <time.h>

#include "base64/libbase64.h"
#include "md5/md5.h"
#include "sha1/sha1.h"
#include "url/url.h"
#include "parson/parson.h"
#include "resources.h"
#include "timelib/timelib.h"

#define MIN_WIDTH 600
#define MIN_HEIGHT 500
#define FRAME_PADDING 3
#define ROW_PADDING 10
#define TOP_ROW_HEIGHT 26
#define TOP_ITEM_WIDTH 60
#define TOP_ITEM_SPACE 6
#define BOTTOM_ROW_HEIGHT 26
#define BOTTOM_ITEM_WIDTH 80
#define BOTTOM_ITEM_SPACE 10

/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

/*  Make the class name into a global variable  */
TCHAR szClassName[ ] = _T("CodeBlocksWindowsApp");
HINSTANCE gInst;
HMENU gMenu;
HWND gWindows[256] = {};
WORD gLastMenu = IDM_BASE64;
WORD gLastFocus = IDC_EDIT;
int gUTF8 = 1;
timelib_tzinfo *gTimeZoneInfo;

static BOOL RegWC(HINSTANCE inst);
static void OnCreate(HWND hwnd);
static void OnSizing(HWND hwnd, WPARAM fwSide, LPRECT lpRect);
static void OnSize(HWND hwnd);
static void OnMenuClicked(HWND hwnd, WORD id);
static void OnAccelerator(HWND hwnd, WORD id);
static void OnClicked(HWND hwnd, WORD id);
static void ButtonOnClicked(HWND hwnd, WORD id);
static char *wchar_to_utf8(const TCHAR *in, int in_len, int *out_len);
static TCHAR *utf8_to_wchar(const char *in, int in_len, int *out_len);
static char *wchar_to_acp(const TCHAR *in, int in_len, int *out_len);
static TCHAR *acp_to_wchar(const char *in, int in_len, int *out_len);
static char *nl_unix2win(const char *in, char *out);
static TCHAR *base64_encode_string(const TCHAR *in, int in_len, int *out_len, int utf8);
static TCHAR *base64_decode_string(const TCHAR *in, int in_len, int *out_len, int utf8);
static TCHAR *url_encode_string(const TCHAR *in, int in_len, int *out_len, int utf8);
static TCHAR *url_decode_string(const TCHAR *in, int in_len, int *out_len, int utf8);
static TCHAR *md5_string(const TCHAR *in, int in_len, int *out_len, int utf8);
static TCHAR *sha1_string(const TCHAR *in, int in_len, int *out_len, int utf8);
static TCHAR *json_format(const TCHAR *in, int in_len, int *out_len, int utf8);
static TCHAR *time_convert_to_string(const TCHAR *in, int in_len, int *out_len);
static TCHAR *string_convert_to_time(const TCHAR *in, int in_len, int *out_len);
static timelib_tzinfo *my_date_parse_tzfile_wrapper(char *formal_tzname, const timelib_tzdb *tzdb);

int WINAPI WinMain (HINSTANCE hThisInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR lpszArgument,
                     int nCmdShow)
{
    HWND hwnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    HACCEL hAccel;
    int tziCode;

    gInst = hThisInstance;
    /* Register the window class, and if it fails quit the program */
    if (!RegWC (hThisInstance))
        return 0;

    gMenu = LoadMenu(hThisInstance, MAKEINTRESOURCE(IDM_MAIN));
    hAccel = LoadAccelerators(hThisInstance, MAKEINTRESOURCE(IDD_ACCEL));

    /* The class is registered, let's create the program*/
    hwnd = CreateWindowEx (
           0,                   /* Extended possibilites for variation */
           szClassName,         /* Classname */
           _T("常用编解码工具"),       /* Title Text */
           WS_OVERLAPPEDWINDOW, /* default window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           MIN_WIDTH,                 /* The programs width */
           MIN_HEIGHT,                 /* and height in pixels */
           HWND_DESKTOP,        /* The window is a child-window to desktop */
           gMenu,                /* No menu */
           hThisInstance,       /* Program Instance handler */
           NULL                 /* No Window Creation data */
           );
    gWindows[0] = hwnd;

    /* Make the window visible on the screen */
    ShowWindow (hwnd, nCmdShow);

    gTimeZoneInfo = timelib_parse_tzfile("Etc/GMT-8", timelib_builtin_db(), &tziCode);

    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0))
    {
        if (TranslateAccelerator(hwnd, hAccel, &messages) == 0)
        {
            /* Translate virtual-key messages into character messages */
            TranslateMessage(&messages);
        }
        /* Send message to WindowProcedure */
        DispatchMessage(&messages);
    }

    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam;
}

static BOOL RegWC(HINSTANCE inst)
{
    WNDCLASSEX wincl;        /* Data structure for the windowclass */

    /* The Window structure */
    wincl.hInstance = inst;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
    wincl.cbSize = sizeof (WNDCLASSEX);

    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (inst, MAKEINTRESOURCE(IDI_APP));
    wincl.hIconSm = LoadIcon (inst, MAKEINTRESOURCE(IDI_APP));
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 /* No menu */
    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;                      /* structure or the window instance */
    /* Use Windows's default colour as the background of the window */
    wincl.hbrBackground = (HBRUSH) COLOR_WINDOW;

    /* Register the window class, and if it fails quit the program */
    return RegisterClassEx (&wincl);
}


/*  This function is called by the Windows function DispatchMessage()  */

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    WORD wh, wl;

    switch (message)                  /* handle the messages */
    {
        case WM_CREATE:
            OnCreate(hwnd);
            break;

        case WM_SIZING:
            OnSizing(hwnd, wParam, (LPRECT)lParam);
            return TRUE;

        case WM_SIZE:
            OnSize(hwnd);
            break;

        case WM_COMMAND:
            wh = HIWORD(wParam); //message
            wl = LOWORD(wParam); //control id
            if (lParam == (LPARAM)NULL)
            {
                if (wh == 0)
                {
                    OnMenuClicked(hwnd, wl);
                }
                else if (wh == 1)
                {
                    OnAccelerator(hwnd, wl);
                }
            }
            else if (wh == BN_CLICKED)
            {
                OnClicked(hwnd, wl);
            }
            break;

        case WM_NOTIFY:
            break;

        case WM_DESTROY:
            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */
            break;

        default:                      /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam);
    }

    return 0;
}

static void OnCreate(HWND hwnd)
{
    RECT rect;
    long topRowL, topRowT, bottomRowL, bottomRowT, bodyL, bodyT, bodyW, bodyH;
    HFONT font;

    GetClientRect(hwnd, &rect);
    topRowL = bottomRowL = bodyL = rect.left + FRAME_PADDING;
    topRowT = rect.top + FRAME_PADDING;
    bottomRowT = rect.bottom - FRAME_PADDING - BOTTOM_ROW_HEIGHT;
    bodyT = topRowT + TOP_ROW_HEIGHT + ROW_PADDING;
    bodyW = rect.right - rect.left - FRAME_PADDING - FRAME_PADDING;
    bodyH = bottomRowT - ROW_PADDING - bodyT;

    gWindows[IDC_LABEL] = CreateWindowEx(0, _T("STATIC"), _T("编码："), WS_CHILD | WS_VISIBLE, topRowL, topRowT+4, TOP_ITEM_WIDTH, TOP_ROW_HEIGHT-4, hwnd, (HMENU)IDC_LABEL, gInst, NULL);
    gWindows[IDC_UTF8] = CreateWindowEx(0, _T("BUTTON"), _T("UTF8"), WS_CHILD | BS_RADIOBUTTON | WS_VISIBLE, topRowL + (TOP_ITEM_WIDTH + TOP_ITEM_SPACE), topRowT, TOP_ITEM_WIDTH, TOP_ROW_HEIGHT, hwnd, (HMENU)IDC_UTF8, gInst, NULL);
    gWindows[IDC_GBK] = CreateWindowEx(0, _T("BUTTON"), _T("GBK"), WS_CHILD | BS_RADIOBUTTON | WS_VISIBLE, topRowL + (TOP_ITEM_WIDTH + TOP_ITEM_SPACE)*2, topRowT, TOP_ITEM_WIDTH, TOP_ROW_HEIGHT, hwnd, (HMENU)IDC_GBK, gInst, NULL);
    gWindows[IDC_EDIT] = CreateWindowEx(0, _T("EDIT"), NULL, WS_CHILD | WS_VSCROLL | WS_VISIBLE | ES_MULTILINE | ES_WANTRETURN | ES_AUTOVSCROLL, bodyL, bodyT, bodyW, bodyH, hwnd, (HMENU)IDC_EDIT, gInst, NULL);
    gWindows[IDC_ENC] = CreateWindowEx(0, _T("BUTTON"), _T("编码"), WS_CHILD | WS_VISIBLE, bottomRowL, bottomRowT, BOTTOM_ITEM_WIDTH, BOTTOM_ROW_HEIGHT, hwnd, (HMENU)IDC_ENC, gInst, NULL);
    gWindows[IDC_DEC] = CreateWindowEx(0, _T("BUTTON"), _T("解码"), WS_CHILD | WS_VISIBLE, bottomRowL + (BOTTOM_ITEM_WIDTH + BOTTOM_ITEM_SPACE), bottomRowT, BOTTOM_ITEM_WIDTH, BOTTOM_ROW_HEIGHT, hwnd, (HMENU)IDC_DEC, gInst, NULL);
    gWindows[IDC_FORMAT] = CreateWindowEx(0, _T("BUTTON"), _T("格式化"), WS_CHILD, bottomRowL, bottomRowT, BOTTOM_ITEM_WIDTH, BOTTOM_ROW_HEIGHT, hwnd, (HMENU)IDC_FORMAT, gInst, NULL);
    gWindows[IDC_TIME2STR] = CreateWindowEx(0, _T("BUTTON"), _T("转字符串"), WS_CHILD, bottomRowL, bottomRowT, BOTTOM_ITEM_WIDTH, BOTTOM_ROW_HEIGHT, hwnd, (HMENU)IDC_TIME2STR, gInst, NULL);
    gWindows[IDC_STR2TIME] = CreateWindowEx(0, _T("BUTTON"), _T("转时间戳"), WS_CHILD, bottomRowL + (BOTTOM_ITEM_WIDTH + BOTTOM_ITEM_SPACE), bottomRowT, BOTTOM_ITEM_WIDTH, BOTTOM_ROW_HEIGHT, hwnd, (HMENU)IDC_STR2TIME, gInst, NULL);

    font = CreateFont(0, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE, _T("宋体"));
    if (font == NULL)
    {
        MessageBox(hwnd, _T("系统未安装宋体!"), _T("提示"), MB_OK);
    }
    else
    {
        SendMessage(gWindows[IDC_LABEL], WM_SETFONT, (WPARAM)font, MAKELPARAM(FALSE, 0));
        SendMessage(gWindows[IDC_UTF8], WM_SETFONT, (WPARAM)font, MAKELPARAM(FALSE, 0));
        SendMessage(gWindows[IDC_GBK], WM_SETFONT, (WPARAM)font, MAKELPARAM(FALSE, 0));
        SendMessage(gWindows[IDC_EDIT], WM_SETFONT, (WPARAM)font, MAKELPARAM(FALSE, 0));
        SendMessage(gWindows[IDC_ENC], WM_SETFONT, (WPARAM)font, MAKELPARAM(FALSE, 0));
        SendMessage(gWindows[IDC_DEC], WM_SETFONT, (WPARAM)font, MAKELPARAM(FALSE, 0));
        SendMessage(gWindows[IDC_FORMAT], WM_SETFONT, (WPARAM)font, MAKELPARAM(FALSE, 0));
        SendMessage(gWindows[IDC_TIME2STR], WM_SETFONT, (WPARAM)font, MAKELPARAM(FALSE, 0));
        SendMessage(gWindows[IDC_STR2TIME], WM_SETFONT, (WPARAM)font, MAKELPARAM(FALSE, 0));
    }

    CheckRadioButton(hwnd, IDC_UTF8, IDC_GBK, IDC_UTF8);
	SendMessage(gWindows[IDC_EDIT], EM_SETLIMITTEXT, (WPARAM)0x7FFFFFFE, 0);
    SetFocus(gWindows[IDC_EDIT]);
}

static void OnSizing(HWND hwnd, WPARAM fsSide, LPRECT lpRect)
{
    long width, height;

    width = lpRect->right - lpRect->left;
    height = lpRect->bottom - lpRect->top;
    if (width < MIN_WIDTH)
    {
        if (fsSide & WMSZ_LEFT || fsSide & WMSZ_TOPLEFT || fsSide & WMSZ_BOTTOMLEFT)
        {
            lpRect->left = lpRect->right - MIN_WIDTH;
        }
        else if (fsSide & WMSZ_RIGHT || fsSide & WMSZ_TOPRIGHT || fsSide & WMSZ_BOTTOMRIGHT)
        {
            lpRect->right = lpRect->left + MIN_WIDTH;
        }
    }
    if (height < MIN_HEIGHT)
    {
        if (fsSide & WMSZ_TOP || fsSide & WMSZ_TOPLEFT || fsSide & WMSZ_TOPRIGHT)
        {
            lpRect->top = lpRect->bottom - MIN_HEIGHT;
        }
        else if (fsSide & WMSZ_BOTTOM || fsSide & WMSZ_BOTTOMLEFT || fsSide & WMSZ_BOTTOMRIGHT)
        {
            lpRect->bottom = lpRect->top + MIN_HEIGHT;
        }
    }
}

static void OnSize(HWND hwnd)
{
    RECT rect = {};
    long topRowT, bottomRowL, bottomRowT, bodyL, bodyT, bodyW, bodyH;

    GetClientRect(hwnd, &rect);
    bottomRowL = bodyL = rect.left + FRAME_PADDING;
    topRowT = rect.top + FRAME_PADDING;
    bottomRowT = rect.bottom - FRAME_PADDING - BOTTOM_ROW_HEIGHT;
    bodyT = topRowT + TOP_ROW_HEIGHT + ROW_PADDING;
    bodyW = rect.right - rect.left - FRAME_PADDING - FRAME_PADDING;
    bodyH = bottomRowT - ROW_PADDING - bodyT;
    MoveWindow(gWindows[IDC_ENC], bottomRowL, bottomRowT, BOTTOM_ITEM_WIDTH, BOTTOM_ROW_HEIGHT, TRUE);
    MoveWindow(gWindows[IDC_DEC], bottomRowL + (BOTTOM_ITEM_WIDTH + BOTTOM_ITEM_SPACE), bottomRowT, BOTTOM_ITEM_WIDTH, BOTTOM_ROW_HEIGHT, TRUE);
    MoveWindow(gWindows[IDC_FORMAT], bottomRowL, bottomRowT, BOTTOM_ITEM_WIDTH, BOTTOM_ROW_HEIGHT, TRUE);
    MoveWindow(gWindows[IDC_TIME2STR], bottomRowL, bottomRowT, BOTTOM_ITEM_WIDTH, BOTTOM_ROW_HEIGHT, TRUE);
    MoveWindow(gWindows[IDC_STR2TIME], bottomRowL + (BOTTOM_ITEM_WIDTH + BOTTOM_ITEM_SPACE), bottomRowT, BOTTOM_ITEM_WIDTH, BOTTOM_ROW_HEIGHT, TRUE);
    MoveWindow(gWindows[IDC_EDIT], bodyL, bodyT, bodyW, bodyH, TRUE);
}

static void OnMenuClicked(HWND hwnd, WORD id)
{
    if (id == IDM_ABOUT)
    {
        MessageBox(hwnd, _T("快捷键\r\nCtrl + A: 全选\r\nCtrl + Q: 退出\r\nCtrl + F: 切换焦点\r\nCtrl + T: 切换UTF-8\r\nCtrl + G: 切换GBK\r\n[Weicky 2019]"), _T("提示"), MB_OK);
        return;
    }
    SetMenuDefaultItem(gMenu, id, FALSE);
    EnableWindow(gWindows[IDC_UTF8], id == IDM_TIME ? FALSE : TRUE);
    EnableWindow(gWindows[IDC_GBK], id == IDM_JSON || id == IDM_TIME ? FALSE : TRUE);
    ShowWindow(gWindows[IDC_ENC], id == IDM_BASE64 || id == IDM_URL || id == IDM_MD5 || id == IDM_SHA1 ? SW_SHOW : SW_HIDE);
    ShowWindow(gWindows[IDC_DEC], id == IDM_BASE64 || id == IDM_URL ? SW_SHOW : SW_HIDE);
    ShowWindow(gWindows[IDC_FORMAT], id == IDM_JSON ? SW_SHOW : SW_HIDE);
    ShowWindow(gWindows[IDC_TIME2STR], id == IDM_TIME ? SW_SHOW : SW_HIDE);
    ShowWindow(gWindows[IDC_STR2TIME], id == IDM_TIME ? SW_SHOW : SW_HIDE);
    if (id == IDM_JSON)
    {
        CheckRadioButton(hwnd, IDC_UTF8, IDC_GBK, IDC_UTF8);
    }
    if (id == IDM_TIME)
    {
        char ts[32] = "";
        TCHAR *wts;
        int wts_len;

        sprintf(ts, "%ld", time(NULL));
        wts = acp_to_wchar(ts, strlen(ts), &wts_len);
        SetWindowText(gWindows[IDC_EDIT], wts);
        free(wts);
    }
    DrawMenuBar(gWindows[0]);
    gLastMenu = id;
}

static void OnAccelerator(HWND hwnd, WORD id)
{
    switch (id)
    {
        case IDD_SELECT: //ctrl + A
            SendMessage(gWindows[IDC_EDIT], EM_SETSEL, (WPARAM)0, (LPARAM)-1);
            break;

        case IDD_QUIT: //ctrl + Q
            if (MessageBox(hwnd, _T("确定要退出吗？"), _T("提示"), MB_YESNO) == IDYES)
            {
                DestroyWindow(hwnd);
            }
            break;

        case IDD_FOCUS: //ctrl + T
            while (1)
            {
                gLastFocus = gLastFocus == IDC_STR2TIME ? IDC_EDIT : gLastFocus + 1;
                if (gLastFocus == IDC_LABEL || gLastFocus == IDC_UTF8 || gLastFocus == IDC_GBK || IsWindowEnabled(gWindows[gLastFocus]) == FALSE || IsWindowVisible(gWindows[gLastFocus]) == FALSE)
                {
                    continue;
                }
                SetFocus(gWindows[gLastFocus]);
                break;
            }
            break;

        case IDD_UTF8:
            if (IsWindowEnabled(gWindows[IDC_UTF8]) == TRUE)
            {
                CheckRadioButton(hwnd, IDC_UTF8, IDC_GBK, IDC_UTF8);
            }
            break;

        case IDD_GBK:
            if (IsWindowEnabled(gWindows[IDC_GBK]) == TRUE)
            {
                CheckRadioButton(hwnd, IDC_UTF8, IDC_GBK, IDC_GBK);
            }
            break;
    }
}

static void OnClicked(HWND hwnd, WORD id)
{
    switch (id)
    {
        case IDC_UTF8:
            CheckRadioButton(hwnd, IDC_UTF8, IDC_GBK, IDC_UTF8);
            gUTF8 = 1;
            break;

        case IDC_GBK:
            CheckRadioButton(hwnd, IDC_UTF8, IDC_GBK, IDC_GBK);
            gUTF8 = 0;
            break;

        case IDC_ENC:
            ButtonOnClicked(hwnd, id);
            break;

        case IDC_DEC:
            ButtonOnClicked(hwnd, id);
            break;

        case IDC_FORMAT:
            ButtonOnClicked(hwnd, id);
            break;

        case IDC_TIME2STR:
            ButtonOnClicked(hwnd, id);
            break;

        case IDC_STR2TIME:
            ButtonOnClicked(hwnd, id);
            break;
    }
}

static void ButtonOnClicked(HWND hwnd, WORD id)
{
    TCHAR *input, *output;
    int inputLen, outputLen;

    inputLen = GetWindowTextLength(gWindows[IDC_EDIT]);
    if (inputLen)
    {
        input = (TCHAR *)calloc(inputLen + 1, sizeof(TCHAR));
        GetWindowText(gWindows[IDC_EDIT], input, inputLen + 1);

        switch (gLastMenu)
        {
            case IDM_BASE64:
                if (id == IDC_ENC)
                {
                    output = base64_encode_string(input, inputLen, &outputLen, gUTF8);
                }
                else if (id == IDC_DEC)
                {
                    output = base64_decode_string(input, inputLen, &outputLen, gUTF8);
                }
                else
                {
                    return;
                }
                break;

            case IDM_URL:
                if (id == IDC_ENC)
                {
                    output = url_encode_string(input, inputLen, &outputLen, gUTF8);
                }
                else if (id == IDC_DEC)
                {
                    output = url_decode_string(input, inputLen, &outputLen, gUTF8);
                }
                else
                {
                    return;
                }
                break;

            case IDM_MD5:
                output = md5_string(input, inputLen, &outputLen, gUTF8);
                break;

            case IDM_SHA1:
                output = sha1_string(input, inputLen, &outputLen, gUTF8);
                break;

            case IDM_JSON:
                output = json_format(input, inputLen, &outputLen, gUTF8);
                break;

            case IDM_TIME:
                if (id == IDC_TIME2STR)
                {
                    output = time_convert_to_string(input, inputLen, &outputLen);
                }
                else if (id == IDC_STR2TIME)
                {
                    output = string_convert_to_time(input, inputLen, &outputLen);
                }
                else
                {
                    return;
                }
                break;
        }

        //输出&清理
        SetWindowText(gWindows[IDC_EDIT], output);
        free(output);
        free(input);
    }
}

static char *nl_unix2win(const char *in, char *out)
{
    char *cpy, c;

    cpy = out;
    while ((c = *in++))
    {
        if (c == '\r' && *in == '\n')
        {
            *cpy++ = c;
            *cpy++ = *in++;
        }
        else if (c == '\n')
        {
            *cpy++ = '\r';
        }
        *cpy++ = c;
    }
    return out;
}

static char *wchar_to_utf8(const TCHAR *in, int in_len, int *out_len)
{
    char *out;

    *out_len = WideCharToMultiByte(CP_UTF8, 0, in, in_len, NULL, 0, NULL, NULL);
    if (*out_len == 0)
    {
        return NULL;
    }
    out = (char *)calloc(*out_len + 1, 1);
    WideCharToMultiByte(CP_UTF8, 0, in, in_len, out, *out_len, NULL, NULL);
    return out;
}

static TCHAR *utf8_to_wchar(const char *in, int in_len, int *out_len)
{
    TCHAR *out;

    *out_len = MultiByteToWideChar(CP_UTF8, 0, in, in_len, NULL, 0);
    if (*out_len == 0)
    {
        return NULL;
    }
    out = (TCHAR *)calloc((*out_len + 1) * sizeof(TCHAR), 1);
    MultiByteToWideChar(CP_UTF8, 0, in, in_len, out, *out_len);
    return out;
}

static char *wchar_to_acp(const TCHAR *in, int in_len, int *out_len)
{
    char *out;

    *out_len = WideCharToMultiByte(CP_ACP, 0, in, in_len, NULL, 0, NULL, NULL);
    if (*out_len == 0)
    {
        return NULL;
    }
    out = (char *)calloc(*out_len + 1, 1);
    WideCharToMultiByte(CP_ACP, 0, in, in_len, out, *out_len, NULL, NULL);
    return out;
}

static TCHAR *acp_to_wchar(const char *in, int in_len, int *out_len)
{
    TCHAR *out;

    *out_len = MultiByteToWideChar(CP_ACP, 0, in, in_len, NULL, 0);
    if (*out_len == 0)
    {
        return NULL;
    }
    out = (TCHAR *)calloc((*out_len + 1) * sizeof(TCHAR), 1);
    MultiByteToWideChar(CP_ACP, 0, in, in_len, out, *out_len);
    return out;
}

static TCHAR *base64_encode_string(const TCHAR *in, int in_len, int *out_len, int utf8)
{
    char *cpy, *res;
    int cpy_len, res_len;
    TCHAR *out;

    if (utf8)
    {
        cpy = wchar_to_utf8(in, in_len, &cpy_len);
    }
    else
    {
        cpy = wchar_to_acp(in, in_len, &cpy_len);
    }
    res_len = cpy_len * 3;
    res = (char *)calloc(res_len + 1, 1);
    base64_encode(cpy, cpy_len, res, (size_t *)&res_len, 0);
    free(cpy);
    if (utf8)
    {
        out = utf8_to_wchar(res, res_len, out_len);
    }
    else
    {
        out = acp_to_wchar(res, res_len, out_len);
    }
    free(res);
    return out;
}

static TCHAR *base64_decode_string(const TCHAR *in, int in_len, int *out_len, int utf8)
{
    char *cpy, *res;
    int cpy_len, res_len;
    TCHAR *out;

    if (utf8)
    {
        cpy = wchar_to_utf8(in, in_len, &cpy_len);
    }
    else
    {
        cpy = wchar_to_acp(in, in_len, &cpy_len);
    }
    res_len = cpy_len * 3;
    res = (char *)calloc(res_len + 1, 1);
    base64_decode(cpy, cpy_len, res, (size_t *)&res_len, 0);
    free(cpy);
    if (utf8)
    {
        out = utf8_to_wchar(res, res_len, out_len);
    }
    else
    {
        out = acp_to_wchar(res, res_len, out_len);
    }
    free(res);
    return out;
}

static TCHAR *url_encode_string(const TCHAR *in, int in_len, int *out_len, int utf8)
{
    char *cpy, *res;
    int cpy_len, res_len;
    TCHAR *out;

    if (utf8)
    {
        cpy = wchar_to_utf8(in, in_len, &cpy_len);
    }
    else
    {
        cpy = wchar_to_acp(in, in_len, &cpy_len);
    }
    res_len = cpy_len * 3;
    res = (char *)calloc(res_len + 1, 1);
    url_encode(cpy, cpy_len, res, (size_t *)&res_len);
    free(cpy);
    if (utf8)
    {
        out = utf8_to_wchar(res, res_len, out_len);
    }
    else
    {
        out = acp_to_wchar(res, res_len, out_len);
    }
    free(res);
    return out;
}

static TCHAR *url_decode_string(const TCHAR *in, int in_len, int *out_len, int utf8)
{
    char *cpy, *res;
    int cpy_len, res_len;
    TCHAR *out;

    if (utf8)
    {
        cpy = wchar_to_utf8(in, in_len, &cpy_len);
    }
    else
    {
        cpy = wchar_to_acp(in, in_len, &cpy_len);
    }
    res_len = cpy_len * 3;
    res = (char *)calloc(res_len + 1, 1);
    url_decode(cpy, cpy_len, res, (size_t *)&res_len);
    free(cpy);
    if (utf8)
    {
        out = utf8_to_wchar(res, res_len, out_len);
    }
    else
    {
        out = acp_to_wchar(res, res_len, out_len);
    }
    free(res);
    return out;
}

static TCHAR *md5_string(const TCHAR *in, int in_len, int *out_len, int utf8)
{
    char *cpy, *res;
    int cpy_len, res_len;
    TCHAR *out;

    if (utf8)
    {
        cpy = wchar_to_utf8(in, in_len, &cpy_len);
    }
    else
    {
        cpy = wchar_to_acp(in, in_len, &cpy_len);
    }
    res_len = 32;
    res = (char *)calloc(res_len + 1, 1);
    md5(cpy, cpy_len, res);
    free(cpy);
    if (utf8)
    {
        out = utf8_to_wchar(res, res_len, out_len);
    }
    else
    {
        out = acp_to_wchar(res, res_len, out_len);
    }
    free(res);
    return out;
}

static TCHAR *sha1_string(const TCHAR *in, int in_len, int *out_len, int utf8)
{
    char *cpy, *res;
    int cpy_len, res_len;
    TCHAR *out;

    if (utf8)
    {
        cpy = wchar_to_utf8(in, in_len, &cpy_len);
    }
    else
    {
        cpy = wchar_to_acp(in, in_len, &cpy_len);
    }
    res_len = 40;
    res = (char *)calloc(res_len + 1, 1);
    sha1(cpy, cpy_len, res);
    free(cpy);
    if (utf8)
    {
        out = utf8_to_wchar(res, res_len, out_len);
    }
    else
    {
        out = acp_to_wchar(res, res_len, out_len);
    }
    free(res);
    return out;
}

static TCHAR *json_format(const TCHAR *in, int in_len, int *out_len, int utf8)
{
    char *cpy, *json, *json_cpy;
    int cpy_len;
    JSON_Value *obj;
    TCHAR *out;

    if (utf8)
    {
        cpy = wchar_to_utf8(in, in_len, &cpy_len);
    }
    else
    {
        cpy = wchar_to_acp(in, in_len, &cpy_len);
    }
    obj = json_parse_string_with_comments(cpy);
    free(cpy);
    if (obj == NULL)
    {
        *out_len = 5;
        out = (TCHAR *)calloc(*out_len, sizeof(TCHAR));
        wcscpy(out, _T("null"));
    }
    else
    {
        json = json_serialize_to_string_pretty(obj);
        json_value_free(obj);
        json_cpy = (char *)calloc(strlen(json) * 2 + 1, 1);
        nl_unix2win(json, json_cpy);
        json_free_serialized_string(json);
        out = utf8_to_wchar(json_cpy, strlen(json_cpy), out_len);
        free(json_cpy);
    }
    return out;
}

static TCHAR *time_convert_to_string(const TCHAR *in, int in_len, int *out_len)
{
    char *cpy, res[32] = "";
    int cpy_len;
    time_t ts;
    TCHAR *out;
    timelib_time *t;

    //wchar*转int
    cpy = wchar_to_acp(in, in_len, &cpy_len);
    ts = (time_t)atoi(cpy);
    free(cpy);
    //int转timelib_time(struct)
	t = timelib_time_ctor();
    t->tz_info = gTimeZoneInfo;
    t->zone_type = TIMELIB_ZONETYPE_ID;
    timelib_unixtime2local(t, ts);
    //timelib_time转char*
    sprintf(res, "%ld-%02ld-%02ld %02ld:%02ld:%02ld", (long)t->y, (long)t->m, (long)t->d, (long)t->h, (long)t->i, (long)t->s);
    timelib_time_dtor(t);
    //char*转wchar*
    out = acp_to_wchar(res, strlen(res), out_len);
    return out;
}

static TCHAR *string_convert_to_time(const TCHAR *in, int in_len, int *out_len)
{
    char *cpy, res[32] = "";
    int cpy_len, error1, error2;
    int64_t ts;
    TCHAR *out;
    timelib_time *t, *now;
	timelib_error_container *error;

    //wchar*转char*
    cpy = wchar_to_acp(in, in_len, &cpy_len);
    ts = (time_t)atoi(cpy);
    free(cpy);
    //char*转timelib_time(struct)再转int64_t
    now = timelib_time_ctor();
	now->tz_info = gTimeZoneInfo;
	now->zone_type = TIMELIB_ZONETYPE_ID;
	timelib_unixtime2local(now, time(NULL));
    t = timelib_strtotime(cpy, strlen(cpy), &error, timelib_builtin_db(), (timelib_tz_get_wrapper)my_date_parse_tzfile_wrapper);
    error1 = error->error_count;
    timelib_error_container_dtor(error);
    timelib_fill_holes(t, now, TIMELIB_NO_CLONE);
	timelib_update_ts(t, gTimeZoneInfo);
	ts = (int64_t)timelib_date_to_int(t, &error2);
	timelib_time_dtor(now);
	timelib_time_dtor(t);
	//将int64_t转为char*
	if (error1 || error2)
    {
        *out_len = in_len;
        return in;
    }
    else
    {
        sprintf(res, "%ld", (long)ts);
    }
	//将char*转为TCHAR*
    out = acp_to_wchar(res, strlen(res), out_len);
    return out;
}

static timelib_tzinfo *my_date_parse_tzfile_wrapper(char *formal_tzname, const timelib_tzdb *tzdb)
{
	return gTimeZoneInfo;
}