使用CRichEditCtrl与正则实现XML高亮编辑器

最近与XML打交道比较多，为了便于XML格式内容在界面上的编辑，结合正则写了这个简单的XML高亮编辑器，因为是全文解析的，遇到大文件XML时，会慢一些。代码里所使用的正则库是deelx，也可以换成其他的正则库。

派生自CRichEditCtrl的类CKofXMLRichEditCtrl，代码如下：

 /**
 *\fileKofXMLRichEditCtrl.h
 *
 *\author无幻
 *\date2012-3-28
 *
 *简单的XML文件高亮编辑器类
 */
 
 #pragmaonce
 
 #include<tom.h>
 #include<Richole.h>
 
 #defineXML_COLOR_TEXTRGB(0,0,0)
 #defineXML_COLOR_STRINGRGB(163,21,21)
 #defineXML_COLOR_TAGSRGB(0,255)
 #defineXML_COLOR_COMMENTRGB(0,128,0)
 #defineXML_COLOR_BACKGROUNDRGB(255,255,255)
 
 classCKofXMLRichEditCtrl:publicCRichEditCtrl
 {
 DECLARE_DYNAMIC(CKofXMLRichEditCtrl)
 
 public:
 CKofXMLRichEditCtrl();
 virtual~CKofXMLRichEditCtrl();
 
 protected:
 voidInitXmlRichEdit();
 voidColorXml();
 DECLARE_MESSAGE_MAP()
 virtualvoidPreSubclassWindow();
 afx_msgvoidOnEnChange();
 
 private:
 IRichEditOle*m_pRichEditOle;
 ITextDocument*m_pTextDocument;
 };

实现文件如下：

 /**
 *\fileKofXMLRichEditCtrl.cpp
 *
 *\author无幻
 *\date2012-3-28
 *
 *简单的XML文件高亮编辑器类
 */
 
 #include"stdafx.h"
 #include"deelx.h"
 #include"KofXMLRichEditCtrl.h"
 
 IMPLEMENT_DYNAMIC(CKofXMLRichEditCtrl,CRichEditCtrl)
 
 CKofXMLRichEditCtrl::CKofXMLRichEditCtrl()
 {
 m_pRichEditOle=NULL;
 m_pTextDocument=NULL;
 }
 
 CKofXMLRichEditCtrl::~CKofXMLRichEditCtrl()
 {
 if(m_pTextDocument)
 {
 m_pTextDocument->Release();
 m_pTextDocument=NULL;
 }
 if(m_pRichEditOle)
 {
 m_pRichEditOle->Release();
 m_pRichEditOle=NULL;
 }
 }
 
 BEGIN_MESSAGE_MAP(CKofXMLRichEditCtrl,CRichEditCtrl)
 ON_CONTROL_REFLECT(EN_CHANGE,&CKofXMLRichEditCtrl::OnEnChange)
 END_MESSAGE_MAP()
 
 voidCKofXMLRichEditCtrl::PreSubclassWindow()
 {
 m_pRichEditOle=GetIRichEditOle();
 if(m_pRichEditOle)
 {
 if(S_OK!=m_pRichEditOle->QueryInterface(__uuidof(ITextDocument),(LPVOID*)&m_pTextDocument))
 {
 m_pTextDocument=NULL;
 }
 }
 InitXmlRichEdit();
 CRichEditCtrl::PreSubclassWindow();
 }
 
 voidCKofXMLRichEditCtrl::InitXmlRichEdit()
 {
 //关闭自动字体切换
 SendMessage(EM_SETLANGOPTIONS,0);
 
 //设置文本内容变化响应事件掩码
 SetEventMask(GetEventMask()|ENM_CHANGE);
 
 //设置默认字体
 CHARFORMATcf;
 ZeroMemory(&cf,sizeof(CHARFORMAT));
 cf.cbSize=sizeof(CHARFORMAT);
 cf.dwMask=CFM_FACE|CFM_CHARSET|CFM_COLOR;
 cf.bCharSet=ANSI_CHARSET;
 cf.dwEffects=0;
 cf.crTextColor=XML_COLOR_TEXT;
 CFileFindfFind;
 if(fFind.FindFile(_T("C:\\WINDOWS\\Fonts\\CONSOLA.TTF")))
 {
 _tcscpy_s(cf.szFaceName,_T("Consolas"));
 }
 else
 {
 _tcscpy_s(cf.szFaceName,_T("CourierNew"));
 }
 fFind.Close();
 SetDefaultCharFormat(cf);
 
 //设置背景色
 SetBackgroundColor(FALSE,XML_COLOR_BACKGROUND);
 }
 
 voidCKofXMLRichEditCtrl::ColorXml()
 {
 CStringstrValue;
 GetwindowText(strValue);
 if(strValue.IsEmpty())
 {
 return;
 }
 
 //SetSel会把\r\n当成一个字符位
 strValue.Replace(_T("\r\n"),_T("\n"));
 
 //转成Unicode统一当成一个字符
 CStringWstrValueW(strValue);
 
 CHARFORMATcf;
 ZeroMemory(&cf,sizeof(CHARFORMAT));
 cf.cbSize=sizeof(CHARFORMAT);
 cf.dwMask=CFM_COLOR;
 cf.dwEffects=0;
 
 CStringWstrText;
 longlBegin,lEnd;
 intiHorzPos,iVertPos;
 
 GetSel(lBegin,lEnd);
 iHorzPos=GetScrollPos(SB_HORZ);
 iVertPos=GetScrollPos(SB_VERT);
 SetRedraw(FALSE);
 m_pTextDocument->Undo(tomSuspend,NULL);
 
 SetSel(0,-1);
 cf.crTextColor=XML_COLOR_TEXT;
 SetSelectionCharFormat(cf);
 staticCRegexpT<wchar_t>regexpTags(L"<([^>]*)>");//找寻<>标签
 staticCRegexpT<wchar_t>regexpString(L"\"([^\"]*)\"");//找寻""字符串
 staticCRegexpT<wchar_t>regexpcomment(L"<!--((?s).*?)-->");//找寻<!---->注释
 
 MatchResultresultTags=regexpTags.Match(strValueW);
 while(resultTags.IsMatched())
 {
 strText=strValueW.Mid(resultTags.GetStart(),resultTags.GetEnd()-resultTags.GetStart());
 SetSel(resultTags.GetStart(),resultTags.GetEnd());
 cf.crTextColor=XML_COLOR_TAGS;
 SetSelectionCharFormat(cf);
 
 MatchResultresultString=regexpString.Match(strText);
 while(resultString.IsMatched())
 {
 SetSel(resultTags.GetStart()+resultString.GetStart(),
 resultTags.GetStart()+resultString.GetEnd());
 cf.crTextColor=XML_COLOR_STRING;
 SetSelectionCharFormat(cf);
 resultString=regexpString.Match(strText,resultString.GetEnd());
 }
 resultTags=regexpTags.Match(strValueW,resultTags.GetEnd());
 }
 MatchResultresultComment=regexpcomment.Match(strValueW);
 while(resultComment.IsMatched())
 {
 SetSel(resultComment.GetStart(),resultComment.GetEnd());
 cf.crTextColor=XML_COLOR_COMMENT;
 SetSelectionCharFormat(cf);
 resultComment=regexpcomment.Match(strValueW,resultComment.GetEnd());
 }
 
 SetSel(lBegin,lEnd);
 SendMessage(WM_HSCROLL,MAKELONG(SB_THUMBPOSITION,iHorzPos),0);
 SendMessage(WM_VSCROLL,iVertPos),0);
 SetRedraw(TRUE);
 RedrawWindow();
 m_pTextDocument->Undo(tomresume,NULL);
 }
 
 voidCKofXMLRichEditCtrl::OnEnChange()
 {
 if(m_pTextDocument)
 {
 ColorXml();
 }
 } 

步骤如下：
1.打开VC2008，新建基于对话框工程，名称： MyXmlViewer；
2.在对话框上放置一个RichEdit 2.0控件，ID号改为： IDC_RICHEDIT_XML，设置其Multiline属性、Horizontal Scroll属性、Vertical Scroll属性、Want Return属性；
3.在应用程序类实现文件，添加以下代码：

1

 AfxInitRichEdit2();

4.包含"kofxmlricheditctrl.h"头文件，然后关联IDC_RICHEDIT_XML的变量即可，如下：

 #include"kofxmlricheditctrl.h"
 
 classCMyXmlViewerDlg:publicCDialog
 {
 //...
 public:
 CKofXMLRichEditCtrlm_RichEdit;
 };
 
 voidCMyXmlViewerDlg::DoDataExchange(CDataExchange*pDX)
 {
 CDialog::DoDataExchange(pDX);
 DDX_Control(pDX,IDC_RICHEDIT_XML,m_RichEdit);
 }

5.效果如下所示：

使用CRichEditCtrl与正则实现XML高亮编辑器

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