[軟體]_[Windows]_[產品開發時常用的檔案操作方法]

標籤：win32   複製檔案   檔案時間   工具 + 生產力   選擇檔案夾   

情境:

1. 開發Windows產品時,很多東西都需要自己封裝,因為它不像Cocoa那樣有很好的物件模型,通過類就可以訪問檔案相關方法. 比如複製檔案夾? 

要知道Win32是否提供複製檔案夾這個函數還真的通過baidu. MSDN真的很差.

2. 介面開發時開啟選擇檔案夾視窗等.

3. 設定檔案建立時間和修改時間等.

4. 也是可以在產品中移植. 

bas_utility_file.h:

#ifndef __BAS_UTILITY_FILE_H#define __BAS_UTILITY_FILE_H#include "bas_exp.h"#include <stdint.h>#include <Windows.h>#include "stdio.h"typedef struct BASFileInfo1{wchar_t* dir;wchar_t* filename;wchar_t* ext;}BASFileInfo;class LIB_BASIC BASUtilityFile{public:static BOOL CopyDir(LPCTSTR lpszSrcDir, LPCTSTR lpszDstDir);static wchar_t* ZLGetFormatSizeFromBytes(uint64_t size);static wchar_t* GetFilePathNewName(const wchar_t* path);//utf8static bool IsFileExist(const char* path);static bool IsFileExist(const wchar_t* path);static int64_t GetFileSize(const wchar_t* path);//dateTaken: yyyy-MM-dd HH:mm:ss ; HH是1-24小時制.static bool SetFileCreateAndModifyTime(const wchar_t* path,const wchar_t* date_taken);//0:目錄//1:檔案名稱//2:副檔名static BASFileInfo GetFileInfo(const wchar_t* path,TCHAR c);static wchar_t* SelectFolder();};#endif

bas_utility_file.cpp:

#include <string.h>#include <sstream>#include <ShlObj.h>#include "basic/bas_utility_file.h"#include "basic/bas_utility_string.h"bool BASUtilityFile::SetFileCreateAndModifyTime(const wchar_t* path,const wchar_t* date_taken){wchar_t* date = wcsdup(date_taken);wchar_t* pos = wcschr(date,L‘-‘);WORD year = 0;WORD month = 0;WORD day = 0;WORD hour = 0;WORD minute = 0;WORD seconds = 0;*pos = 0x0;year = _wtoi(date);wchar_t* start = pos+1;pos = wcschr(start,L‘-‘);*pos = 0x0;month = _wtoi(start);start = pos+1;pos = wcschr(start,0x20);*pos = 0x0;day = _wtoi(start);start = pos+1;pos = wcschr(start,L‘:‘);*pos = 0x0;hour = _wtoi(start);hour = (hour == 24)?0:hour;start = pos+1;pos = wcschr(start,L‘:‘);*pos = 0x0;minute = _wtoi(start);start = pos+1;seconds = _wtoi(start);HANDLE file = CreateFile(path,GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);if(file != INVALID_HANDLE_VALUE){FILETIME ft;SYSTEMTIME st,stUTC;BOOL f;//hour: 0-23GetSystemTime(&st);              // Gets the current system timest.wYear = year;st.wMonth = month;st.wDay = day;st.wHour = hour;st.wMinute = minute;st.wSecond = seconds;st.wDayOfWeek = 0;st.wMilliseconds = 0;TzSpecificLocalTimeToSystemTime(NULL,&st,&stUTC);SystemTimeToFileTime(&stUTC, &ft);  // Converts the current system time to file time formatf = SetFileTime(file,           // Sets last-write time of the file &ft,NULL,           // to the converted current system time &ft);CloseHandle(file);free(date);return true;}return false;}BOOL BASUtilityFile::CopyDir(LPCTSTR lpszSrcDir, LPCTSTR lpszDstDir) { SHFILEOPSTRUCT sfo; ZeroMemory(&sfo, sizeof(sfo)); sfo.wFunc = FO_COPY; sfo.pFrom = lpszSrcDir; sfo.pTo = lpszDstDir; sfo.fFlags = FOF_SILENT | FOF_NOCONFIRMATION | FOF_NOCONFIRMMKDIR; int ret = SHFileOperation(&sfo); if ( ret == 0 ) return TRUE; else return FALSE; }wchar_t* BASUtilityFile::ZLGetFormatSizeFromBytes(uint64_t size){double kb = (double) size / 1024;    std::wstring result;wchar_t buf[16];    if (kb < 1)    {swprintf(buf,L"%.2f B",(double)size);result.append(buf);        return wcsdup(result.c_str());    }    double mb = kb / 1024;    if (mb < 1)    {swprintf(buf,L"%.2f KB",kb);result.append(buf);        return wcsdup(result.c_str());    }    double gb = mb / 1024;    if (gb < 1)    {swprintf(buf,L"%.2f MB",mb);result.append(buf);        return wcsdup(result.c_str());    }swprintf(buf,L"%.2f GB",gb);result.append(buf);    return wcsdup(result.c_str());}wchar_t* BASUtilityFile::SelectFolder(){TCHAR szPath[MAX_PATH]={0};TCHAR szDir[MAX_PATH]={0};memset(szDir,0,sizeof(szDir));GetCurrentDirectory(MAX_PATH,szPath);BROWSEINFO bi;bi.hwndOwner = NULL;bi.pidlRoot=NULL;bi.iImage=NULL;bi.ulFlags = BIF_NEWDIALOGSTYLE;bi.pszDisplayName=szDir;bi.lpszTitle=szPath;bi.lParam=NULL;bi.lpfn=NULL;if(!SHGetPathFromIDList(SHBrowseForFolder(&bi),szDir)){return NULL;}szDir[wcslen(szDir)] = L‘\\‘;return wcsdup(szDir);}BASFileInfo BASUtilityFile::GetFileInfo(const wchar_t* path1,TCHAR c){std::wstring path(path1);size_t pos = 0;BASFileInfo info;if((pos = path.find_last_of(c)) != std::wstring::npos){info.dir = wcsdup(path.substr(0,pos+1).c_str());pos++;}else{info.dir = wcsdup(L"");pos = 0;}size_t dot = path.find_last_of(L‘.‘);if(dot != std::wstring::npos){info.filename = wcsdup(path.substr(pos,dot-pos).c_str());info.ext = wcsdup(path.substr(dot).c_str());}else{info.filename = wcsdup(path.substr(pos).c_str());info.ext = wcsdup(L"");}return info;}int64_t BASUtilityFile::GetFileSize(const wchar_t* path){FILE* file = _wfopen(path,L"rb");    if (file)    {        fseek(file, 0, SEEK_END);        int64_t size = ftell(file);        fclose(file);        return size;    }    return 0;}bool BASUtilityFile::IsFileExist(const char* path){wchar_t* path1 = BASUtilityString::ConvertUtf8ToUnicode(path);bool res = IsFileExist(path1);free(path1);return res;}bool BASUtilityFile::IsFileExist(const wchar_t* path){if (_waccess(path,0)!= -1){return true;}return false;}wchar_t* BASUtilityFile::GetFilePathNewName(const wchar_t* path1){if(!IsFileExist(path1)){return wcsdup(path1);}std::wstring path(path1);    int count = 1;    std::wstring temp;size_t dot = path.find_last_of(L".");size_t slash = path.find_last_of(L"\\");std::wstring dir_part = path.substr(0,slash+1);std::wstring postfix_part = path.substr(dot);std::wstring name_part = path.substr(slash+1,dot-slash-1);int kMaxCount = 1000;while(count < kMaxCount){std::wstring new_path;std::wstringstream wss;wss << L"(" << count << L")";new_path.append(dir_part).append(name_part).append(wss.str()).append(postfix_part);if(!IsFileExist(new_path.c_str())){return wcsdup(new_path.c_str());}++count;}    return wcsdup(path.c_str());}

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[軟體]_[Windows]_[產品開發時常用的檔案操作方法]