MakeSureDirectoryPathExists检查目录是否存在

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函数原型

编辑

BOOL MakeSureDirectoryPathExists(

PCSTR Dirpath

);

函数作用

该函数的作用是检查指定目录是否存在，如果不存在则创建整个Dirpath所表示的整个目录。

参数

Dirpath:要检查的目录名。如果是路径不是文件名，需以 '\' 结尾。

返回值

如果目录存在，返回TRUE；如果不存在但全部路径创建成功，返回TRUE；

如果不存在且创建失败，返回FALSE。

函数使用

编辑

一次性建立多级目录（用CreateDirectory只能一级一级的建立）。

如:

MakeSureDirectoryPathExists( "c:\\a\\b\\ ");

如果a文件夹不存在也可以创建成功。

这个函数并不存在于 Kernel32.dll 中，需要包含头文件imagehlp.h，并链接imagehlp.lib。

#include <ImageHlp.h>

#pragma comment(lib,"imagehlp.lib")

该函数的实现如下，以供使用和学习。

LPTSTR _tCharAlloc(UINT uSize){return (LPTSTR)malloc(sizeof(TCHAR) * uSize);}VOID _tCharFree(LPVOID p){free(p);}#define IMAGEAPI WINAPIBOOL IMAGEAPI MakeSureDirectoryPathExists(LPCTSTR pszDirPath){LPTSTR p, pszDirCopy;DWORD dwAttributes;// Make a copy of the string for editing.__try{pszDirCopy = (LPTSTR)_tCharAlloc(lstrlen(pszDirPath) + 1);if(pszDirCopy == NULL)return FALSE;lstrcpy(pszDirCopy, pszDirPath);p = pszDirCopy;// If the second character in the path is "\", then this is a UNC// path, and we should skip forward until we reach the 2nd \ in the path.if((*p == TEXT('\\')) && (*(p+1) == TEXT('\\'))){p++; // Skip over the first \ in the name.p++; // Skip over the second \ in the name.// Skip until we hit the first "\" (\\Server\).while(*p && *p != TEXT('\\')){p = CharNext(p);}// Advance over it.if(*p){p++;}// Skip until we hit the second "\" (\\Server\Share\).while(*p && *p != TEXT('\\')){p = CharNext(p);}// Advance over it also.if(*p){p++;}}else if(*(p+1) == TEXT(':')) // Not a UNC. See if it's <drive>:{p++;p++;// If it exists, skip over the root specifierif(*p && (*p == TEXT('\\'))){p++;}}while(*p){if(*p == TEXT('\\')){*p = TEXT('\0');dwAttributes = GetFileAttributes(pszDirCopy);// Nothing exists with this name. Try to make the directory name and error if unable to.if(dwAttributes == 0xffffffff){if(!CreateDirectory(pszDirCopy, NULL)){if(GetLastError() != ERROR_ALREADY_EXISTS){_tCharFree(pszDirCopy);return FALSE;}}}else{if((dwAttributes & FILE_ATTRIBUTE_DIRECTORY) != FILE_ATTRIBUTE_DIRECTORY){// Something exists with this name, but it's not a directory... Error_tCharFree(pszDirCopy);return FALSE;}}*p = TEXT('\\');}p = CharNext(p);}}__except(EXCEPTION_EXECUTE_HANDLER){// SetLastError(GetExceptionCode());_tCharFree(pszDirCopy);return FALSE;}_tCharFree(pszDirCopy);return TRUE;}

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