西安单位网站建设,涡阳网站建设,免费网站软件下载大全2018,仿qq网站程序VS2017/2019 无法打开包括文件: “dirent.h”: No such file or directory
1 “dirent.h”: No such file or directory 在windows下的VS2017/2019编译器中#xff0c;发现无法打开“dirent.h”#xff0c;主要是MSVC并没有实现这个头文件#xff0c;但是在Linux这个头文件…VS2017/2019 无法打开包括文件: “dirent.h”: No such file or directory
1 “dirent.h”: No such file or directory 在windows下的VS2017/2019编译器中发现无法打开“dirent.h”主要是MSVC并没有实现这个头文件但是在Linux这个头文件肯定是有的。为此有人已经写出了WIndows下可用的 “dirent.h”。
这是github地址也可以从这里下载你只需要这个头文件即可 https://github.com/tronkko/dirent
2 只需要把下面的代码保存dirent.h即可直接放在工程目录下。
/** Dirent interface for Microsoft Visual Studio** Copyright (C) 1998-2019 Toni Ronkko* This file is part of dirent. Dirent may be freely distributed* under the MIT license. For all details and documentation, see* https://github.com/tronkko/dirent*/
#ifndef DIRENT_H
#define DIRENT_H/* Hide warnings about unreferenced local functions */
#if defined(__clang__)
# pragma clang diagnostic ignored -Wunused-function
#elif defined(_MSC_VER)
# pragma warning(disable:4505)
#elif defined(__GNUC__)
# pragma GCC diagnostic ignored -Wunused-function
#endif/** Include windows.h without Windows Sockets 1.1 to prevent conflicts with* Windows Sockets 2.0.*/
#ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
#endif
#include windows.h#include stdio.h
#include stdarg.h
#include wchar.h
#include string.h
#include stdlib.h
#include malloc.h
#include sys/types.h
#include sys/stat.h
#include errno.h/* Indicates that d_type field is available in dirent structure */
#define _DIRENT_HAVE_D_TYPE/* Indicates that d_namlen field is available in dirent structure */
#define _DIRENT_HAVE_D_NAMLEN/* Entries missing from MSVC 6.0 */
#if !defined(FILE_ATTRIBUTE_DEVICE)
# define FILE_ATTRIBUTE_DEVICE 0x40
#endif/* File type and permission flags for stat(), general mask */
#if !defined(S_IFMT)
# define S_IFMT _S_IFMT
#endif/* Directory bit */
#if !defined(S_IFDIR)
# define S_IFDIR _S_IFDIR
#endif/* Character device bit */
#if !defined(S_IFCHR)
# define S_IFCHR _S_IFCHR
#endif/* Pipe bit */
#if !defined(S_IFFIFO)
# define S_IFFIFO _S_IFFIFO
#endif/* Regular file bit */
#if !defined(S_IFREG)
# define S_IFREG _S_IFREG
#endif/* Read permission */
#if !defined(S_IREAD)
# define S_IREAD _S_IREAD
#endif/* Write permission */
#if !defined(S_IWRITE)
# define S_IWRITE _S_IWRITE
#endif/* Execute permission */
#if !defined(S_IEXEC)
# define S_IEXEC _S_IEXEC
#endif/* Pipe */
#if !defined(S_IFIFO)
# define S_IFIFO _S_IFIFO
#endif/* Block device */
#if !defined(S_IFBLK)
# define S_IFBLK 0
#endif/* Link */
#if !defined(S_IFLNK)
# define S_IFLNK 0
#endif/* Socket */
#if !defined(S_IFSOCK)
# define S_IFSOCK 0
#endif/* Read user permission */
#if !defined(S_IRUSR)
# define S_IRUSR S_IREAD
#endif/* Write user permission */
#if !defined(S_IWUSR)
# define S_IWUSR S_IWRITE
#endif/* Execute user permission */
#if !defined(S_IXUSR)
# define S_IXUSR 0
#endif/* Read group permission */
#if !defined(S_IRGRP)
# define S_IRGRP 0
#endif/* Write group permission */
#if !defined(S_IWGRP)
# define S_IWGRP 0
#endif/* Execute group permission */
#if !defined(S_IXGRP)
# define S_IXGRP 0
#endif/* Read others permission */
#if !defined(S_IROTH)
# define S_IROTH 0
#endif/* Write others permission */
#if !defined(S_IWOTH)
# define S_IWOTH 0
#endif/* Execute others permission */
#if !defined(S_IXOTH)
# define S_IXOTH 0
#endif/* Maximum length of file name */
#if !defined(PATH_MAX)
# define PATH_MAX MAX_PATH
#endif
#if !defined(FILENAME_MAX)
# define FILENAME_MAX MAX_PATH
#endif
#if !defined(NAME_MAX)
# define NAME_MAX FILENAME_MAX
#endif/* File type flags for d_type */
#define DT_UNKNOWN 0
#define DT_REG S_IFREG
#define DT_DIR S_IFDIR
#define DT_FIFO S_IFIFO
#define DT_SOCK S_IFSOCK
#define DT_CHR S_IFCHR
#define DT_BLK S_IFBLK
#define DT_LNK S_IFLNK/* Macros for converting between st_mode and d_type */
#define IFTODT(mode) ((mode) S_IFMT)
#define DTTOIF(type) (type)/** File type macros. Note that block devices, sockets and links cannot be* distinguished on Windows and the macros S_ISBLK, S_ISSOCK and S_ISLNK are* only defined for compatibility. These macros should always return false* on Windows.*/
#if !defined(S_ISFIFO)
# define S_ISFIFO(mode) (((mode) S_IFMT) S_IFIFO)
#endif
#if !defined(S_ISDIR)
# define S_ISDIR(mode) (((mode) S_IFMT) S_IFDIR)
#endif
#if !defined(S_ISREG)
# define S_ISREG(mode) (((mode) S_IFMT) S_IFREG)
#endif
#if !defined(S_ISLNK)
# define S_ISLNK(mode) (((mode) S_IFMT) S_IFLNK)
#endif
#if !defined(S_ISSOCK)
# define S_ISSOCK(mode) (((mode) S_IFMT) S_IFSOCK)
#endif
#if !defined(S_ISCHR)
# define S_ISCHR(mode) (((mode) S_IFMT) S_IFCHR)
#endif
#if !defined(S_ISBLK)
# define S_ISBLK(mode) (((mode) S_IFMT) S_IFBLK)
#endif/* Return the exact length of the file name without zero terminator */
#define _D_EXACT_NAMLEN(p) ((p)-d_namlen)/* Return the maximum size of a file name */
#define _D_ALLOC_NAMLEN(p) ((PATH_MAX)1)#ifdef __cplusplus
extern C {
#endif/* Wide-character version */
struct _wdirent {/* Always zero */long d_ino;/* File position within stream */long d_off;/* Structure size */unsigned short d_reclen;/* Length of name without \0 */size_t d_namlen;/* File type */int d_type;/* File name */wchar_t d_name[PATH_MAX1];
};
typedef struct _wdirent _wdirent;struct _WDIR {/* Current directory entry */struct _wdirent ent;/* Private file data */WIN32_FIND_DATAW data;/* True if data is valid */int cached;/* Win32 search handle */HANDLE handle;/* Initial directory name */wchar_t *patt;
};
typedef struct _WDIR _WDIR;/* Multi-byte character version */
struct dirent {/* Always zero */long d_ino;/* File position within stream */long d_off;/* Structure size */unsigned short d_reclen;/* Length of name without \0 */size_t d_namlen;/* File type */int d_type;/* File name */char d_name[PATH_MAX1];
};
typedef struct dirent dirent;struct DIR {struct dirent ent;struct _WDIR *wdirp;
};
typedef struct DIR DIR;/* Dirent functions */
static DIR *opendir (const char *dirname);
static _WDIR *_wopendir (const wchar_t *dirname);static struct dirent *readdir (DIR *dirp);
static struct _wdirent *_wreaddir (_WDIR *dirp);static int readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result);
static int _wreaddir_r(_WDIR *dirp, struct _wdirent *entry, struct _wdirent **result);static int closedir (DIR *dirp);
static int _wclosedir (_WDIR *dirp);static void rewinddir (DIR* dirp);
static void _wrewinddir (_WDIR* dirp);static int scandir (const char *dirname, struct dirent ***namelist,int (*filter)(const struct dirent*),int (*compare)(const struct dirent**, const struct dirent**));static int alphasort (const struct dirent **a, const struct dirent **b);static int versionsort (const struct dirent **a, const struct dirent **b);/* For compatibility with Symbian */
#define wdirent _wdirent
#define WDIR _WDIR
#define wopendir _wopendir
#define wreaddir _wreaddir
#define wclosedir _wclosedir
#define wrewinddir _wrewinddir/* Internal utility functions */
static WIN32_FIND_DATAW *dirent_first (_WDIR *dirp);
static WIN32_FIND_DATAW *dirent_next (_WDIR *dirp);static int dirent_mbstowcs_s(size_t *pReturnValue,wchar_t *wcstr,size_t sizeInWords,const char *mbstr,size_t count);static int dirent_wcstombs_s(size_t *pReturnValue,char *mbstr,size_t sizeInBytes,const wchar_t *wcstr,size_t count);static void dirent_set_errno (int error);/** Open directory stream DIRNAME for read and return a pointer to the* internal working area that is used to retrieve individual directory* entries.*/
static _WDIR*
_wopendir(const wchar_t *dirname)
{_WDIR *dirp;
#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)/* Desktop */DWORD n;
#else/* WinRT */size_t n;
#endifwchar_t *p;/* Must have directory name */if (dirname NULL || dirname[0] \0) {dirent_set_errno (ENOENT);return NULL;}/* Allocate new _WDIR structure */dirp (_WDIR*) malloc (sizeof (struct _WDIR));if (!dirp) {return NULL;}/* Reset _WDIR structure */dirp-handle INVALID_HANDLE_VALUE;dirp-patt NULL;dirp-cached 0;/** Compute the length of full path plus zero terminator** Note that on WinRT theres no way to convert relative paths* into absolute paths, so just assume it is an absolute path.*/
#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)/* Desktop */n GetFullPathNameW (dirname, 0, NULL, NULL);
#else/* WinRT */n wcslen (dirname);
#endif/* Allocate room for absolute directory name and search pattern */dirp-patt (wchar_t*) malloc (sizeof (wchar_t) * n 16);if (dirp-patt NULL) {goto exit_closedir;}/** Convert relative directory name to an absolute one. This* allows rewinddir() to function correctly even when current* working directory is changed between opendir() and rewinddir().** Note that on WinRT theres no way to convert relative paths* into absolute paths, so just assume it is an absolute path.*/
#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)/* Desktop */n GetFullPathNameW (dirname, n, dirp-patt, NULL);if (n 0) {goto exit_closedir;}
#else/* WinRT */wcsncpy_s (dirp-patt, n1, dirname, n);
#endif/* Append search pattern \* to the directory name */p dirp-patt n;switch (p[-1]) {case \\:case /:case ::/* Directory ends in path separator, e.g. c:\temp\ *//*NOP*/;break;default:/* Directory name doesnt end in path separator */*p \\;}*p *;*p \0;/* Open directory stream and retrieve the first entry */if (!dirent_first (dirp)) {goto exit_closedir;}/* Success */return dirp;/* Failure */
exit_closedir:_wclosedir (dirp);return NULL;
}/** Read next directory entry.** Returns pointer to static directory entry which may be overwritten by* subsequent calls to _wreaddir().*/
static struct _wdirent*
_wreaddir(_WDIR *dirp)
{struct _wdirent *entry;/** Read directory entry to buffer. We can safely ignore the return value* as entry will be set to NULL in case of error.*/(void) _wreaddir_r (dirp, dirp-ent, entry);/* Return pointer to statically allocated directory entry */return entry;
}/** Read next directory entry.** Returns zero on success. If end of directory stream is reached, then sets* result to NULL and returns zero.*/
static int
_wreaddir_r(_WDIR *dirp,struct _wdirent *entry,struct _wdirent **result)
{WIN32_FIND_DATAW *datap;/* Read next directory entry */datap dirent_next (dirp);if (datap) {size_t n;DWORD attr;/** Copy file name as wide-character string. If the file name is too* long to fit in to the destination buffer, then truncate file name* to PATH_MAX characters and zero-terminate the buffer.*/n 0;while (n PATH_MAX datap-cFileName[n] ! 0) {entry-d_name[n] datap-cFileName[n];n;}entry-d_name[n] 0;/* Length of file name excluding zero terminator */entry-d_namlen n;/* File type */attr datap-dwFileAttributes;if ((attr FILE_ATTRIBUTE_DEVICE) ! 0) {entry-d_type DT_CHR;} else if ((attr FILE_ATTRIBUTE_DIRECTORY) ! 0) {entry-d_type DT_DIR;} else {entry-d_type DT_REG;}/* Reset dummy fields */entry-d_ino 0;entry-d_off 0;entry-d_reclen sizeof (struct _wdirent);/* Set result address */*result entry;} else {/* Return NULL to indicate end of directory */*result NULL;}return /*OK*/0;
}/** Close directory stream opened by opendir() function. This invalidates the* DIR structure as well as any directory entry read previously by* _wreaddir().*/
static int
_wclosedir(_WDIR *dirp)
{int ok;if (dirp) {/* Release search handle */if (dirp-handle ! INVALID_HANDLE_VALUE) {FindClose (dirp-handle);}/* Release search pattern */free (dirp-patt);/* Release directory structure */free (dirp);ok /*success*/0;} else {/* Invalid directory stream */dirent_set_errno (EBADF);ok /*failure*/-1;}return ok;
}/** Rewind directory stream such that _wreaddir() returns the very first* file name again.*/
static void
_wrewinddir(_WDIR* dirp)
{if (dirp) {/* Release existing search handle */if (dirp-handle ! INVALID_HANDLE_VALUE) {FindClose (dirp-handle);}/* Open new search handle */dirent_first (dirp);}
}/* Get first directory entry (internal) */
static WIN32_FIND_DATAW*
dirent_first(_WDIR *dirp)
{WIN32_FIND_DATAW *datap;DWORD error;/* Open directory and retrieve the first entry */dirp-handle FindFirstFileExW(dirp-patt, FindExInfoStandard, dirp-data,FindExSearchNameMatch, NULL, 0);if (dirp-handle ! INVALID_HANDLE_VALUE) {/* a directory entry is now waiting in memory */datap dirp-data;dirp-cached 1;} else {/* Failed to open directory: no directory entry in memory */dirp-cached 0;datap NULL;/* Set error code */error GetLastError ();switch (error) {case ERROR_ACCESS_DENIED:/* No read access to directory */dirent_set_errno (EACCES);break;case ERROR_DIRECTORY:/* Directory name is invalid */dirent_set_errno (ENOTDIR);break;case ERROR_PATH_NOT_FOUND:default:/* Cannot find the file */dirent_set_errno (ENOENT);}}return datap;
}/** Get next directory entry (internal).** Returns*/
static WIN32_FIND_DATAW*
dirent_next(_WDIR *dirp)
{WIN32_FIND_DATAW *p;/* Get next directory entry */if (dirp-cached ! 0) {/* A valid directory entry already in memory */p dirp-data;dirp-cached 0;} else if (dirp-handle ! INVALID_HANDLE_VALUE) {/* Get the next directory entry from stream */if (FindNextFileW (dirp-handle, dirp-data) ! FALSE) {/* Got a file */p dirp-data;} else {/* The very last entry has been processed or an error occurred */FindClose (dirp-handle);dirp-handle INVALID_HANDLE_VALUE;p NULL;}} else {/* End of directory stream reached */p NULL;}return p;
}/** Open directory stream using plain old C-string.*/
static DIR*
opendir(const char *dirname)
{struct DIR *dirp;/* Must have directory name */if (dirname NULL || dirname[0] \0) {dirent_set_errno (ENOENT);return NULL;}/* Allocate memory for DIR structure */dirp (DIR*) malloc (sizeof (struct DIR));if (!dirp) {return NULL;}{int error;wchar_t wname[PATH_MAX 1];size_t n;/* Convert directory name to wide-character string */error dirent_mbstowcs_s(n, wname, PATH_MAX 1, dirname, PATH_MAX 1);if (error) {/** Cannot convert file name to wide-character string. This* occurs if the string contains invalid multi-byte sequences or* the output buffer is too small to contain the resulting* string.*/goto exit_free;}/* Open directory stream using wide-character name */dirp-wdirp _wopendir (wname);if (!dirp-wdirp) {goto exit_free;}}/* Success */return dirp;/* Failure */
exit_free:free (dirp);return NULL;
}/** Read next directory entry.*/
static struct dirent*
readdir(DIR *dirp)
{struct dirent *entry;/** Read directory entry to buffer. We can safely ignore the return value* as entry will be set to NULL in case of error.*/(void) readdir_r (dirp, dirp-ent, entry);/* Return pointer to statically allocated directory entry */return entry;
}/** Read next directory entry into called-allocated buffer.** Returns zero on success. If the end of directory stream is reached, then* sets result to NULL and returns zero.*/
static int
readdir_r(DIR *dirp,struct dirent *entry,struct dirent **result)
{WIN32_FIND_DATAW *datap;/* Read next directory entry */datap dirent_next (dirp-wdirp);if (datap) {size_t n;int error;/* Attempt to convert file name to multi-byte string */error dirent_wcstombs_s(n, entry-d_name, PATH_MAX 1, datap-cFileName, PATH_MAX 1);/** If the file name cannot be represented by a multi-byte string,* then attempt to use old 83 file name. This allows traditional* Unix-code to access some file names despite of unicode* characters, although file names may seem unfamiliar to the user.** Be ware that the code below cannot come up with a short file* name unless the file system provides one. At least* VirtualBox shared folders fail to do this.*/if (error datap-cAlternateFileName[0] ! \0) {error dirent_wcstombs_s(n, entry-d_name, PATH_MAX 1,datap-cAlternateFileName, PATH_MAX 1);}if (!error) {DWORD attr;/* Length of file name excluding zero terminator */entry-d_namlen n - 1;/* File attributes */attr datap-dwFileAttributes;if ((attr FILE_ATTRIBUTE_DEVICE) ! 0) {entry-d_type DT_CHR;} else if ((attr FILE_ATTRIBUTE_DIRECTORY) ! 0) {entry-d_type DT_DIR;} else {entry-d_type DT_REG;}/* Reset dummy fields */entry-d_ino 0;entry-d_off 0;entry-d_reclen sizeof (struct dirent);} else {/** Cannot convert file name to multi-byte string so construct* an erroneous directory entry and return that. Note that* we cannot return NULL as that would stop the processing* of directory entries completely.*/entry-d_name[0] ?;entry-d_name[1] \0;entry-d_namlen 1;entry-d_type DT_UNKNOWN;entry-d_ino 0;entry-d_off -1;entry-d_reclen 0;}/* Return pointer to directory entry */*result entry;} else {/* No more directory entries */*result NULL;}return /*OK*/0;
}/** Close directory stream.*/
static int
closedir(DIR *dirp)
{int ok;if (dirp) {/* Close wide-character directory stream */ok _wclosedir (dirp-wdirp);dirp-wdirp NULL;/* Release multi-byte character version */free (dirp);} else {/* Invalid directory stream */dirent_set_errno (EBADF);ok /*failure*/-1;}return ok;
}/** Rewind directory stream to beginning.*/
static void
rewinddir(DIR* dirp)
{/* Rewind wide-character string directory stream */_wrewinddir (dirp-wdirp);
}/** Scan directory for entries.*/
static int
scandir(const char *dirname,struct dirent ***namelist,int (*filter)(const struct dirent*),int (*compare)(const struct dirent**, const struct dirent**))
{struct dirent **files NULL;size_t size 0;size_t allocated 0;const size_t init_size 1;DIR *dir NULL;struct dirent *entry;struct dirent *tmp NULL;size_t i;int result 0;/* Open directory stream */dir opendir (dirname);if (dir) {/* Read directory entries to memory */while (1) {/* Enlarge pointer table to make room for another pointer */if (size allocated) {void *p;size_t num_entries;/* Compute number of entries in the enlarged pointer table */if (size init_size) {/* Allocate initial pointer table */num_entries init_size;} else {/* Double the size */num_entries size * 2;}/* Allocate first pointer table or enlarge existing table */p realloc (files, sizeof (void*) * num_entries);if (p ! NULL) {/* Got the memory */files (dirent**) p;allocated num_entries;} else {/* Out of memory */result -1;break;}}/* Allocate room for temporary directory entry */if (tmp NULL) {tmp (struct dirent*) malloc (sizeof (struct dirent));if (tmp NULL) {/* Cannot allocate temporary directory entry */result -1;break;}}/* Read directory entry to temporary area */if (readdir_r (dir, tmp, entry) /*OK*/0) {/* Did we get an entry? */if (entry ! NULL) {int pass;/* Determine whether to include the entry in result */if (filter) {/* Let the filter function decide */pass filter (tmp);} else {/* No filter function, include everything */pass 1;}if (pass) {/* Store the temporary entry to pointer table */files[size] tmp;tmp NULL;/* Keep up with the number of files */result;}} else {/** End of directory stream reached sort entries and* exit.*/qsort (files, size, sizeof (void*),(int (*) (const void*, const void*)) compare);break;}} else {/* Error reading directory entry */result /*Error*/ -1;break;}}} else {/* Cannot open directory */result /*Error*/ -1;}/* Release temporary directory entry */free (tmp);/* Release allocated memory on error */if (result 0) {for (i 0; i size; i) {free (files[i]);}free (files);files NULL;}/* Close directory stream */if (dir) {closedir (dir);}/* Pass pointer table to caller */if (namelist) {*namelist files;}return result;
}/* Alphabetical sorting */
static int
alphasort(const struct dirent **a, const struct dirent **b)
{return strcoll ((*a)-d_name, (*b)-d_name);
}/* Sort versions */
static int
versionsort(const struct dirent **a, const struct dirent **b)
{/* FIXME: implement strverscmp and use that */return alphasort (a, b);
}/* Convert multi-byte string to wide character string */
static int
dirent_mbstowcs_s(size_t *pReturnValue,wchar_t *wcstr,size_t sizeInWords,const char *mbstr,size_t count)
{int error;#if defined(_MSC_VER) _MSC_VER 1400/* Microsoft Visual Studio 2005 or later */error mbstowcs_s (pReturnValue, wcstr, sizeInWords, mbstr, count);#else/* Older Visual Studio or non-Microsoft compiler */size_t n;/* Convert to wide-character string (or count characters) */n mbstowcs (wcstr, mbstr, sizeInWords);if (!wcstr || n count) {/* Zero-terminate output buffer */if (wcstr sizeInWords) {if (n sizeInWords) {n sizeInWords - 1;}wcstr[n] 0;}/* Length of resulting multi-byte string WITH zero terminator */if (pReturnValue) {*pReturnValue n 1;}/* Success */error 0;} else {/* Could not convert string */error 1;}#endifreturn error;
}/* Convert wide-character string to multi-byte string */
static int
dirent_wcstombs_s(size_t *pReturnValue,char *mbstr,size_t sizeInBytes, /* max size of mbstr */const wchar_t *wcstr,size_t count)
{int error;#if defined(_MSC_VER) _MSC_VER 1400/* Microsoft Visual Studio 2005 or later */error wcstombs_s (pReturnValue, mbstr, sizeInBytes, wcstr, count);#else/* Older Visual Studio or non-Microsoft compiler */size_t n;/* Convert to multi-byte string (or count the number of bytes needed) */n wcstombs (mbstr, wcstr, sizeInBytes);if (!mbstr || n count) {/* Zero-terminate output buffer */if (mbstr sizeInBytes) {if (n sizeInBytes) {n sizeInBytes - 1;}mbstr[n] \0;}/* Length of resulting multi-bytes string WITH zero-terminator */if (pReturnValue) {*pReturnValue n 1;}/* Success */error 0;} else {/* Cannot convert string */error 1;}#endifreturn error;
}/* Set errno variable */
static void
dirent_set_errno(int error)
{
#if defined(_MSC_VER) _MSC_VER 1400/* Microsoft Visual Studio 2005 and later */_set_errno (error);#else/* Non-Microsoft compiler or older Microsoft compiler */errno error;#endif
}#ifdef __cplusplus
}
#endif
#endif /*DIRENT_H*/
