fix: #62 Text length limit for CEdit is 30000

server/2015Remote/ShellDlg.cpp

@@ -6,6 +6,8 @@
 #include "ShellDlg.h"
 #include "afxdialogex.h"
 
+#define EDIT_MAXLENGTH 30000
+
 BEGIN_MESSAGE_MAP(CAutoEndEdit, CEdit)
 	ON_WM_CHAR()
 END_MESSAGE_MAP()
@@ -77,6 +79,7 @@ BOOL CShellDlg::OnInitDialog()
 	m_nReceiveLength = m_nCurSel;
 	m_Edit.SetSel((int)m_nCurSel, (int)m_nCurSel);
 	m_Edit.PostMessage(EM_SETSEL, m_nCurSel, m_nCurSel);
+	m_Edit.SetLimitText(EDIT_MAXLENGTH);
 
 	return TRUE;  // return TRUE unless you set the focus to a control
 	// <20>쳣: OCX <20><><EFBFBD><EFBFBD>ҳӦ<D2B3><D3A6><EFBFBD><EFBFBD> FALSE
@@ -115,6 +118,17 @@ VOID CShellDlg::AddKeyBoardData(void)
 	//<2F>滻<EFBFBD><E6BBBB>ԭ<EFBFBD><D4AD><EFBFBD>Ļ<EFBFBD><C4BB>з<EFBFBD>  <20><><EFBFBD><EFBFBD>cmd <20>Ļ<EFBFBD><C4BB><EFBFBD>ͬw32<33>µı༭<C4B1>ؼ<EFBFBD><D8BC>Ļ<EFBFBD><C4BB>з<EFBFBD><D0B7><EFBFBD>һ<EFBFBD><D2BB>   <20><><EFBFBD>еĻس<C4BB><D8B3><EFBFBD><EFBFBD><EFBFBD>   
 	strResult.Replace("\n", "\r\n");
 
+	if (strResult.GetLength() + m_Edit.GetWindowTextLength() >= EDIT_MAXLENGTH)
+	{
+		CString text;
+		m_Edit.GetWindowTextA(text);
+		auto n = EDIT_MAXLENGTH - strResult.GetLength() - 5; // <20><>5<EFBFBD><35><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>clear<61><72><EFBFBD><EFBFBD>
+		if (n < 0) {
+			strResult = strResult.Right(strResult.GetLength() + n);
+		}
+		m_Edit.SetWindowTextA(text.Right(max(n, 0)));
+	}
+
 	//<2F>õ<EFBFBD><C3B5><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD>ڵ<EFBFBD><DAB5>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>
 	int	iLength = m_Edit.GetWindowTextLength();    //kdfjdjfdir
 	//hello                                    
@@ -151,6 +165,24 @@ void CShellDlg::OnClose()
 }
 
 
+CString ExtractAfterLastNewline(const CString& str)
+{
+	int nPos = str.ReverseFind(_T('\n'));
+	if (nPos != -1)
+	{
+		return str.Mid(nPos + 1);
+	}
+
+	nPos = str.ReverseFind(_T('\r'));
+	if (nPos != -1)
+	{
+		return str.Mid(nPos + 1);
+	}
+
+	return str;
+}
+
+
 BOOL CShellDlg::PreTranslateMessage(MSG* pMsg)
 {
 	if (pMsg->message == WM_KEYDOWN)
@@ -174,13 +206,20 @@ BOOL CShellDlg::PreTranslateMessage(MSG* pMsg)
 #ifdef _DEBUG
             TRACE("[Shell]=> %s", (char*)pSrc);
 #endif
+			if (0 == strcmp((char*)pSrc, "exit\r\n")) { // <20>˳<EFBFBD><CBB3>ն<EFBFBD>
+				return PostMessage(WM_CLOSE);
+			}
+			else if (0 == strcmp((char*)pSrc, "clear\r\n")) { // <20><><EFBFBD><EFBFBD><EFBFBD>ն<EFBFBD>
+				str = ExtractAfterLastNewline(str.Left(str.GetLength() - 7));
+				m_Edit.SetWindowTextA(str);
+				m_nCurSel = m_Edit.GetWindowTextLength();
+				m_nReceiveLength = m_nCurSel;
+				m_Edit.SetSel(m_nCurSel, m_nCurSel);
+				return TRUE;
+			}
 			int length = str.GetLength() - m_nCurSel;
 			m_iocpServer->OnClientPreSending(m_ContextObject, pSrc, length);
 			m_nCurSel = m_Edit.GetWindowTextLength();
-			if (0 == strcmp((char*)pSrc, "exit\r\n"))
-			{
-				return PostMessage(WM_CLOSE);
-			}
 		}
 		// <20><><EFBFBD><EFBFBD>VK_BACK
 		if (pMsg->wParam == VK_BACK && pMsg->hwnd == m_Edit.m_hWnd)

server/2015Remote/ShellDlg.h

@@ -25,7 +25,7 @@ public:
 	HICON       m_hIcon;
 	UINT m_nReceiveLength;
 	VOID AddKeyBoardData(void);
-	UINT m_nCurSel;   //<2F><><EFBFBD>õ<EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>;
+	int m_nCurSel;   //<2F><><EFBFBD>õ<EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>;
 
 // <20>Ի<EFBFBD><D4BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 	enum { IDD = IDD_DIALOG_SHELL };