21.cpp

设计SAMPLE语言的词法分析器 a) 启动程序后

#define _WIN32_WINNT 0x0400 
#include<ctime>
#include<iostream.h> 
#include<stdlib.h> 
#include<stdio.h>
#include <windows.h> 
#ifdef UNICODE 
#undef UNICODE 
#endif 
int  withoutfile,timelimit,timelimit1,timelimit2;
char WithoutFilePath[MAX_PATH];
char sFindFileName[MAX_PATH]; 
char name1[MAX_PATH];
    char path1[MAX_PATH];
	
char a,b,c;
int changtime;

int flag=0;
BOOL MyFindFile(LPCSTR sFindPath, LPCSTR sFindFileName, ULONGLONG &uCountFolder, 

ULONGLONG &uCountFile) 
{   SYSTEMTIME sys;
    GetLocalTime(&sys);
	SYSTEMTIME jojo1;
    SYSTEMTIME jojo2;
    char sPath[MAX_PATH]; 
    char sFormatFileName[MAX_PATH+2] = "*"; 
    WIN32_FIND_DATA FindFileData; 
    HANDLE hFind; 
    BOOL fFinished = FALSE; 

    lstrcpy(sFormatFileName, sFindPath); 
    lstrcat(sFormatFileName, "\\*"); 
    lstrcat(sFormatFileName, sFindFileName); 
    lstrcat(sFormatFileName, "*"); 

    hFind = FindFirstFile(sFormatFileName,//欲搜索的文件名。可包含通配符，并可包含一个路径或相对路径名 
		&FindFileData); //这个结构用于装载与找到的文件有关的信息。该结构可用于后续的搜索

    if (hFind == INVALID_HANDLE_VALUE)  
    { 
        return FALSE; 
    } 

    else  
    {FileTimeToSystemTime(&FindFileData.ftLastWriteTime,&jojo1);
     FileTimeToSystemTime(&FindFileData.ftCreationTime,&jojo1);
	
        while (!fFinished)  
        { 
            lstrcpy(sPath, sFindPath); 
            lstrcat(sPath, "\\"); 
            lstrcat(sPath, FindFileData.cFileName);

            if (FILE_ATTRIBUTE_DIRECTORY & FindFileData.dwFileAttributes) 
            { 
                if (0 != lstrcmp(FindFileData.cFileName,".") && 0 != lstrcmp(FindFileData.cFileName,".."))
			{ cout<<"Folder "<<(int)uCountFolder<<". - "<<sPath<<endl; ++uCountFolder;};
            } 
			else {if(timelimit1==1){if((changtime>0&&sys.wDay<=(jojo1.wDay+5))||
				                       (changtime<0&&(sys.wDay-5)>=jojo1.wDay))flag=1;
			                      
			else flag=0;};
			if(timelimit2==1){if(
				(changtime>0&&sys.wDay<=(jojo2.wDay+5))||
				                       (changtime<0&&(sys.wDay-5)>=jojo2.wDay)
									   )flag=1;else flag=0;};
			if(timelimit1==0&&timelimit2==0)flag=1;

			if(flag){ cout << "  File   " << (int)uCountFile << ". - " << sPath <<endl; ++uCountFile;}}

            if (!FindNextFile(hFind, &FindFileData))  
            { 
                if (GetLastError() == ERROR_NO_MORE_FILES)  
                { 
                    fFinished = TRUE;  
                }  
                else  
                { 
                    break; 
                }  
            } 
        } 

        FindClose(hFind); 
    } 

    return TRUE; 
} 

BOOL MyFindFolder(LPCSTR sPath, LPCSTR sFindFileName, ULONGLONG &uCountFolder, ULONGLONG &uCountFile) 
{ 
    char sTemp[MAX_PATH]; 
    char sFormatFileName[MAX_PATH]; 
    WIN32_FIND_DATA FindFileData; 
    HANDLE hFind; 
    BOOL fFinished = FALSE; 
    
   
	MyFindFile(sPath, sFindFileName, uCountFolder, uCountFile); 

    lstrcpy(sFormatFileName, sPath); 
    lstrcat(sFormatFileName, "\\*"); 
    hFind = FindFirstFile(sFormatFileName, &FindFileData); 

    if (hFind == INVALID_HANDLE_VALUE)  
    { 
        return FALSE; 
    } 
    else  
    { 
        while (!fFinished)  
        { 
            if (FILE_ATTRIBUTE_DIRECTORY & FindFileData.dwFileAttributes) 
            { 
                if (0 != lstrcmp(FindFileData.cFileName,".") && 0 != lstrcmp

(FindFileData.cFileName,"..")) 
                { 
                    lstrcpy(sTemp, sPath); 
                    lstrcat(sTemp, "\\"); 
                    lstrcat(sTemp, FindFileData.cFileName);
                   if(lstrcmp(WithoutFilePath,FindFileData.cFileName))
					   MyFindFolder(sTemp, sFindFileName, uCountFolder, uCountFile); 
                } 
            } 

            if (!FindNextFile(hFind, &FindFileData))  
            { 
                if (GetLastError() == ERROR_NO_MORE_FILES)  
                { 
                    return TRUE; 
                }  
                else  
                {  
                    return FALSE; 
                }  
            } 
        } 

        FindClose(hFind); 
    } 

    return TRUE; 
} 

void GetFileName(LPCSTR sFullPath, LPSTR sFilePath, LPSTR sFileName) 
{ 
    LPSTR p = (LPSTR)(sFullPath + lstrlen(sFullPath) - 1); //P指向的是sFullPath的最后一个字符
	//LPSTR被定义成是一个指向以NULL('\0')结尾的8位ANSI字符数组指针，
    bool Flag(false);                                     
	// 而LPWSTR是一个指向以NULL结尾的16位双字节字符数组指针。

    while (p != sFullPath) 
    { 
        if ('\\' == *p || '/' == *p) 
        { 
            Flag = true; 
            break; 
        } 
        p--; 
    } 

    if (Flag) 
    { 
        lstrcpy(sFileName, p + 1); //让sFileName指向斜杠后
        lstrcpy(sFilePath, sFullPath); //sFullPath 就是sFileName
        sFilePath[p-sFullPath] = '\0'; 
    } 
    else 
    { 
        lstrcpy(sFileName, sFullPath); 
        GetFullPathName(".", MAX_PATH, sFilePath, NULL); //没有斜杠：查找当前目录的文件？
    } 
} 

ULONGLONG MyStartFind(LPCSTR sFindFileName) 
{ 
    char sPath[MAX_PATH]; 
    char sFileName[MAX_PATH]; 
    ULONGLONG    uCountFolder(0); 
    ULONGLONG    uCountFile(0); 
     
    GetFileName(sFindFileName, sPath, sFileName); 
    MyFindFolder(sPath, sFileName, uCountFolder, uCountFile); 

    if (uCountFolder + uCountFile) 
    { 
        cout << "------------------------------------------------------------"<< endl;  
    cout << "Total Folders："<< (int)uCountFolder << " " << endl;  
       cout << "Total Files：  "<< (int)uCountFile << " " << endl;  
    } 
    else 
        cout << "Couldn't Find File." << endl; 

    return uCountFolder + uCountFile; 
} 

void main() 
{  
    cout<<"*************文件查找***************"<<endl;
    cout<<"输入文件名，如：jojo.txt"<<endl; cout<<"Filename:";cin>>name1;
    cout<<"输入起始路径，如：C:\\Windows"<<endl<<"PATH:";cin>>path1;
    cout<<"选择不查找的目录y/n:";
	cin>>a;
	switch(a){case 'y':  withoutfile=1;cout<<"请输入不查找的文件夹名称：";cin>>WithoutFilePath;break;
	default:withoutfile=0;}
    cout<<"选择时间限制y/n:";
	cin>>b;
	switch(a){case 'y':  cout<<"输入1\\2确定选择"<<endl<<"1.按照修改时间"<<endl<<"2.按照创建时间"<<endl;
	                     cin>>timelimit;
						 switch(timelimit){case 1:timelimit1=1;timelimit2=0;
						 cout<<"输入天数，-n代表n天前修改，n天前到现在修改过的"<<endl;
						 cin>>changtime;
						 break;
						 case 2:timelimit1=0;timelimit2=1;
					     cout<<"输入天数，-n代表n天前创建的，n天前到现在修改过的"<<endl;
						 cin>>changtime;
						 break;
						 default:timelimit1=0;timelimit2=0;}
	}

    lstrcat(path1,name1);
    lstrcpy(sFindFileName, path1);
    MyStartFind(sFindFileName); 


} 
/*
typedef struct _WIN32_FIND_DATAA {
    DWORD dwFileAttributes;
    FILETIME ftCreationTime;
    FILETIME ftLastAccessTime;
    FILETIME ftLastWriteTime;
    DWORD nFileSizeHigh;
    DWORD nFileSizeLow;
    DWORD dwReserved0;
    DWORD dwReserved1;
    CHAR   cFileName[ MAX_PATH ];
    CHAR   cAlternateFileName[ 14 ];
#ifdef _MAC
    DWORD dwFileType;
    DWORD dwCreatorType;
    WORD  wFinderFlags;
#endif
} */