📄 ccittdlg.cpp
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// ccittDlg.cpp : implementation file
//
#include "stdafx.h"
#include "ccitt.h"
#include "ccittDlg.h"
#include "stdio.h"
#include <stdlib.h>
#include <string.h>
#define MAX_STRING_SIZE 1024
#define P_CCITT 0x1021
#ifdef _DEBUG
#define new DEBUG_NEW
#define FALSE 0
#define TRUE 1
#define P_CCITT 0x1021
#define MAX_STRING_SIZE 2048
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL
// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CCcittDlg dialog
CCcittDlg::CCcittDlg(CWnd* pParent /*=NULL*/)
: CDialog(CCcittDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CCcittDlg)
m_edit1 = _T("");
m_edit2 = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CCcittDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CCcittDlg)
DDX_Text(pDX, IDC_EDIT1, m_edit1);
DDV_MaxChars(pDX, m_edit1, 2048);
DDX_Text(pDX, IDC_EDIT2, m_edit2);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CCcittDlg, CDialog)
//{{AFX_MSG_MAP(CCcittDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CCcittDlg message handlers
BOOL CCcittDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// Add "About..." menu item to system menu.
// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here
return TRUE; // return TRUE unless you set the focus to a control
}
void CCcittDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.
void CCcittDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}
// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CCcittDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
unsigned short update_crc_ccitt( unsigned short crc, char c );
static int crc_tabccitt_init = FALSE;
static unsigned short crc_tabccitt[256];
static void init_crcccitt_tab( void );
static void init_crcccitt_tab( void )
{
int i, j;
unsigned short crc, c;
for (i=0; i<256; i++) {
crc = 0;
c = ((unsigned short) i) << 8;
for (j=0; j<8; j++) {
if ( (crc ^ c) & 0x8000 ) crc = ( crc << 1 ) ^ P_CCITT;
else crc = crc << 1;
c = c << 1;
}
crc_tabccitt[i] = crc;
}
crc_tabccitt_init = TRUE;
} /* init_crcccitt_tab */
unsigned short update_crc_ccitt( unsigned short crc, char c ) {
unsigned short tmp, short_c;
short_c = 0x00ff & (unsigned short) c;
if ( ! crc_tabccitt_init ) init_crcccitt_tab();
tmp = (crc >> 8) ^ short_c;
crc = (crc << 8) ^ crc_tabccitt[tmp];
return crc;
} /* update_crc_ccitt */
/*void crc_main( char input_string[MAX_STRING_SIZE])
{
char input_string[MAX_STRING_SIZE];
char *ptr, *dest, hex_val;
unsigned short crc_ccitt_ffff, low_byte, high_byte,a1,b;
unsigned long crc_32;
int a, ch;
ptr = input_string;
dest = input_string;
while( *ptr && *ptr != '\r' && *ptr != '\n' )
{
if ( *ptr >= '0' && *ptr <= '9' ) *dest++ = (char) ( (*ptr) - '0' );
if ( *ptr >= 'A' && *ptr <= 'F' ) *dest++ = (char) ( (*ptr) - 'A' + 10 );
if ( *ptr >= 'a' && *ptr <= 'f' ) *dest++ = (char) ( (*ptr) - 'a' + 10 );
ptr++;
}
* dest = '\x80';
*(dest+1) = '\x80';
a = 1;
do {
crc_ccitt_ffff = 0xffff;
ptr = input_string;
while ( *ptr != '\x80' )
{
hex_val = (char) ( ( * ptr & '\x0f' ) << 4 );
hex_val |= (char) ( ( *(ptr+1) & '\x0f' ) );
crc_ccitt_ffff = update_crc_ccitt( crc_ccitt_ffff, hex_val );
ptr += 2;
}
input_string[0] = 0;
crc_ccitt_ffff = ~crc_ccitt_ffff;
a1 = crc_ccitt_ffff <<8;
b = crc_ccitt_ffff>>8;
crc_ccitt_ffff= a1^b;
}
} /* main (tst_crc.c) */
void CCcittDlg::OnButton1()
{
// TODO: Add your control notification handler code here
char input_string[MAX_STRING_SIZE];
int outdata[4];
char *ptr, *dest, hex_val;
unsigned short crc_ccitt_ffff,a1,b;
int i,j;
CString str_input,put_string,s;
CString input_string1[4];
UpdateData(TRUE);
put_string=m_edit1;
str_input="";
//ptr = input_string;
//dest = input_string;
j=strlen(put_string);
for (i=0;i<j;i++)
{
if (put_string.Mid(i,1)!=' ') str_input=str_input+put_string.Mid(i,1);
}
j=strlen(str_input);
for(i=0;i<j;i++)
{
if (str_input.Mid(i,1)=="0") input_string[i]='0';
if (str_input.Mid(i,1)=="1") input_string[i]='1';
if (str_input.Mid(i,1)=="2") input_string[i]='2';
if (str_input.Mid(i,1)=="3") input_string[i]='3';
if (str_input.Mid(i,1)=="4") input_string[i]='4';
if (str_input.Mid(i,1)=="5") input_string[i]='5';
if (str_input.Mid(i,1)=="6") input_string[i]='6';
if (str_input.Mid(i,1)=="7") input_string[i]='7';
if (str_input.Mid(i,1)=="8") input_string[i]='8';
if (str_input.Mid(i,1)=="9") input_string[i]='9';
if (str_input.Mid(i,1)=="a" || str_input.Mid(i,1)=="A") input_string[i]='A';
if (str_input.Mid(i,1)=="b" || str_input.Mid(i,1)=="B") input_string[i]='B';
if (str_input.Mid(i,1)=="c" || str_input.Mid(i,1)=="C") input_string[i]='C';
if (str_input.Mid(i,1)=="d" || str_input.Mid(i,1)=="D") input_string[i]='D';
if (str_input.Mid(i,1)=="e" || str_input.Mid(i,1)=="E") input_string[i]='E';
if (str_input.Mid(i,1)=="f" || str_input.Mid(i,1)=="F") input_string[i]='F';
}
ptr = input_string;
dest = input_string;
while( *ptr && *ptr != '\r' && *ptr != '\n' )
{
if ( *ptr >= '0' && *ptr <= '9' ) *dest++ = (char) ( (*ptr) - '0' );
if ( *ptr >= 'A' && *ptr <= 'F' ) *dest++ = (char) ( (*ptr) - 'A' + 10 );
if ( *ptr >= 'a' && *ptr <= 'f' ) *dest++ = (char) ( (*ptr) - 'a' + 10 );
ptr++;
}
* dest = '\x80';
*(dest+1) = '\x80';
crc_ccitt_ffff = 0xffff;
ptr = input_string;
while ( *ptr != '\x80' && *ptr != ' ')
{
hex_val = (char) ( ( * ptr & '\x0f' ) << 4 );
hex_val |= (char) ( ( *(ptr+1) & '\x0f' ) );
crc_ccitt_ffff = update_crc_ccitt( crc_ccitt_ffff, hex_val );
ptr += 2;
}
input_string[0] = 0;
crc_ccitt_ffff = ~crc_ccitt_ffff;
a1 = crc_ccitt_ffff <<8;
b = crc_ccitt_ffff>>8;
crc_ccitt_ffff= a1^b;
//m_edit2= crc_ccitt_ffff;
//UpdateData(FALSE);
for(i=3;i>=0;i--)
{
outdata[i]=crc_ccitt_ffff % 16;
crc_ccitt_ffff=crc_ccitt_ffff / 16;
}
for(i=0;i<4;i++)
{
if (outdata[i]==0) input_string1[i]="0";
if (outdata[i]==1) input_string1[i]="1";
if (outdata[i]==2) input_string1[i]="2";
if (outdata[i]==3) input_string1[i]="3";
if (outdata[i]==4) input_string1[i]="4";
if (outdata[i]==5) input_string1[i]="5";
if (outdata[i]==6) input_string1[i]="6";
if (outdata[i]==7) input_string1[i]="7";
if (outdata[i]==8) input_string1[i]="8";
if (outdata[i]==9) input_string1[i]="9";
if (outdata[i]==10) input_string1[i]="A";
if (outdata[i]==11) input_string1[i]="B";
if (outdata[i]==12) input_string1[i]="C";
if (outdata[i]==13) input_string1[i]="D";
if (outdata[i]==14) input_string1[i]="E";
if (outdata[i]==15) input_string1[i]="F";
}
for(i=0;i<4;i++)
{
s=s+input_string1[i];
}
m_edit2="0x"+s;
UpdateData(FALSE);
}
void CCcittDlg::OnButton2()
{
// TODO: Add your control notification handler code here
m_edit1="";
m_edit2="";
UpdateData(FALSE);
}
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