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| -rw-r--r-- | source/wdirent.h | 369 |
1 files changed, 0 insertions, 369 deletions
diff --git a/source/wdirent.h b/source/wdirent.h deleted file mode 100644 index 0f8b37842..000000000 --- a/source/wdirent.h +++ /dev/null @@ -1,369 +0,0 @@ -/***************************************************************************** - * dirent.h - dirent API for Microsoft Visual Studio - * - * Copyright (C) 2006 Toni Ronkko - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * ``Software''), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. - * IN NO EVENT SHALL TONI RONKKO BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * Mar 15, 2011, Toni Ronkko - * Defined FILE_ATTRIBUTE_DEVICE for MSVC 6.0. - * - * Aug 11, 2010, Toni Ronkko - * Added d_type and d_namlen fields to dirent structure. The former is - * especially useful for determining whether directory entry represents a - * file or a directory. For more information, see - * http://www.delorie.com/gnu/docs/glibc/libc_270.html - * - * Aug 11, 2010, Toni Ronkko - * Improved conformance to the standards. For example, errno is now set - * properly on failure and assert() is never used. Thanks to Peter Brockam - * for suggestions. - * - * Aug 11, 2010, Toni Ronkko - * Fixed a bug in rewinddir(): when using relative directory names, change - * of working directory no longer causes rewinddir() to fail. - * - * Dec 15, 2009, John Cunningham - * Added rewinddir member function - * - * Jan 18, 2008, Toni Ronkko - * Using FindFirstFileA and WIN32_FIND_DATAA to avoid converting string - * between multi-byte and unicode representations. This makes the - * code simpler and also allows the code to be compiled under MingW. Thanks - * to Azriel Fasten for the suggestion. - * - * Mar 4, 2007, Toni Ronkko - * Bug fix: due to the strncpy_s() function this file only compiled in - * Visual Studio 2005. Using the new string functions only when the - * compiler version allows. - * - * Nov 2, 2006, Toni Ronkko - * Major update: removed support for Watcom C, MS-DOS and Turbo C to - * simplify the file, updated the code to compile cleanly on Visual - * Studio 2005 with both unicode and multi-byte character strings, - * removed rewinddir() as it had a bug. - * - * Aug 20, 2006, Toni Ronkko - * Removed all remarks about MSVC 1.0, which is antiqued now. Simplified - * comments by removing SGML tags. - * - * May 14 2002, Toni Ronkko - * Embedded the function definitions directly to the header so that no - * source modules need to be included in the Visual Studio project. Removed - * all the dependencies to other projects so that this very header can be - * used independently. - * - * May 28 1998, Toni Ronkko - * First version. - *****************************************************************************/ -#ifndef DIRENT_H -#define DIRENT_H - -#include <stdlib.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <errno.h> - -/* Entries missing from MSVC 6.0 */ -#if !defined(FILE_ATTRIBUTE_DEVICE) -# define FILE_ATTRIBUTE_DEVICE 0x40 -#endif - -/* File type and permission flags for stat() */ -#if defined(_MSC_VER) && !defined(S_IREAD) -# define S_IFMT _S_IFMT /* file type mask */ -# define S_IFDIR _S_IFDIR /* directory */ -# define S_IFCHR _S_IFCHR /* character device */ -# define S_IFFIFO _S_IFFIFO /* pipe */ -# define S_IFREG _S_IFREG /* regular file */ -# define S_IREAD _S_IREAD /* read permission */ -# define S_IWRITE _S_IWRITE /* write permission */ -# define S_IEXEC _S_IEXEC /* execute permission */ -#endif -#define S_IFBLK 0 /* block device */ -#define S_IFLNK 0 /* link */ -#define S_IFSOCK 0 /* socket */ - -#if defined(_MSC_VER) -# define S_IRUSR S_IREAD /* read, user */ -# define S_IWUSR S_IWRITE /* write, user */ -# define S_IXUSR 0 /* execute, user */ -# define S_IRGRP 0 /* read, group */ -# define S_IWGRP 0 /* write, group */ -# define S_IXGRP 0 /* execute, group */ -# define S_IROTH 0 /* read, others */ -# define S_IWOTH 0 /* write, others */ -# define S_IXOTH 0 /* execute, others */ -#endif - -/* Indicates that d_type field is available in dirent structure */ -#define _DIRENT_HAVE_D_TYPE - -/* File type flags for d_type */ -#define DT_UNKNOWN 0 -#define DT_REG S_IFREG -#define DT_DIR S_IFDIR -#define DT_FIFO S_IFFIFO -#define DT_SOCK S_IFSOCK -#define DT_CHR S_IFCHR -#define DT_BLK S_IFBLK - -/* 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. - */ -#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFFIFO) -#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) -#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) -#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK) -#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) -#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR) -#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK) - -#ifdef __cplusplus -extern "C" { -#endif - - -typedef struct dirent -{ - char d_name[MAX_PATH + 1]; /* File name */ - size_t d_namlen; /* Length of name without \0 */ - int d_type; /* File type */ -} dirent; - - -typedef struct DIR -{ - dirent curentry; /* Current directory entry */ - WIN32_FIND_DATAA find_data; /* Private file data */ - int cached; /* True if data is valid */ - HANDLE search_handle; /* Win32 search handle */ - char patt[MAX_PATH + 3]; /* Initial directory name */ -} DIR; - - -/* Forward declarations */ -static DIR *opendir(const char *dirname); -static struct dirent *readdir(DIR *dirp); -static int closedir(DIR *dirp); -static void rewinddir(DIR* dirp); - - -/* Use the new safe string functions introduced in Visual Studio 2005 */ -#if defined(_MSC_VER) && _MSC_VER >= 1400 -# define DIRENT_STRNCPY(dest,src,size) strncpy_s((dest),(size),(src),_TRUNCATE) -#else -# define DIRENT_STRNCPY(dest,src,size) strncpy((dest),(src),(size)) -#endif - -/* Set errno variable */ -#if defined(_MSC_VER) -#define DIRENT_SET_ERRNO(x) _set_errno (x) -#else -#define DIRENT_SET_ERRNO(x) (errno = (x)) -#endif - - -/***************************************************************************** - * Open directory stream DIRNAME for read and return a pointer to the - * internal working area that is used to retrieve individual directory - * entries. - */ -static DIR *opendir(const char *dirname) -{ - DIR *dirp; - - /* ensure that the resulting search pattern will be a valid file name */ - if (dirname == NULL) { - DIRENT_SET_ERRNO (ENOENT); - return NULL; - } - if (strlen (dirname) + 3 >= MAX_PATH) { - DIRENT_SET_ERRNO (ENAMETOOLONG); - return NULL; - } - - /* construct new DIR structure */ - dirp = (DIR*) malloc (sizeof (struct DIR)); - if (dirp != NULL) { - int error; - - /* - * Convert relative directory name to an absolute one. This - * allows rewinddir() to function correctly when the current working - * directory is changed between opendir() and rewinddir(). - */ - if (GetFullPathNameA (dirname, MAX_PATH, dirp->patt, NULL)) { - char *p; - - /* append the search pattern "\\*\0" to the directory name */ - p = strchr (dirp->patt, '\0'); - if (dirp->patt < p && *(p-1) != '\\' && *(p-1) != ':') { - *p++ = '\\'; - } - *p++ = '*'; - *p = '\0'; - - /* open directory stream and retrieve the first entry */ - dirp->search_handle = FindFirstFileA (dirp->patt, &dirp->find_data); - if (dirp->search_handle != INVALID_HANDLE_VALUE) { - /* a directory entry is now waiting in memory */ - dirp->cached = 1; - error = 0; - } else { - /* search pattern is not a directory name? */ - DIRENT_SET_ERRNO (ENOENT); - error = 1; - } - } else { - /* buffer too small */ - DIRENT_SET_ERRNO (ENOMEM); - error = 1; - } - - if (error) { - free (dirp); - dirp = NULL; - } - } - - return dirp; -} - - -/***************************************************************************** - * Read a directory entry, and return a pointer to a dirent structure - * containing the name of the entry in d_name field. Individual directory - * entries returned by this very function include regular files, - * sub-directories, pseudo-directories "." and "..", but also volume labels, - * hidden files and system files may be returned. - */ -static struct dirent *readdir(DIR *dirp) -{ - DWORD attr; - if (dirp == NULL) { - /* directory stream did not open */ - DIRENT_SET_ERRNO (EBADF); - return NULL; - } - - /* get next directory entry */ - if (dirp->cached != 0) { - /* a valid directory entry already in memory */ - dirp->cached = 0; - } else { - /* get the next directory entry from stream */ - if (dirp->search_handle == INVALID_HANDLE_VALUE) { - return NULL; - } - if (FindNextFileA (dirp->search_handle, &dirp->find_data) == FALSE) { - /* the very last entry has been processed or an error occured */ - FindClose (dirp->search_handle); - dirp->search_handle = INVALID_HANDLE_VALUE; - return NULL; - } - } - - /* copy as a multibyte character string */ - DIRENT_STRNCPY ( dirp->curentry.d_name, - dirp->find_data.cFileName, - sizeof(dirp->curentry.d_name) ); - dirp->curentry.d_name[MAX_PATH] = '\0'; - - /* compute the length of name */ - dirp->curentry.d_namlen = strlen (dirp->curentry.d_name); - - /* determine file type */ - attr = dirp->find_data.dwFileAttributes; - if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) { - dirp->curentry.d_type = DT_CHR; - } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) { - dirp->curentry.d_type = DT_DIR; - } else { - dirp->curentry.d_type = DT_REG; - } - return &dirp->curentry; -} - - -/***************************************************************************** - * Close directory stream opened by opendir() function. Close of the - * directory stream invalidates the DIR structure as well as any previously - * read directory entry. - */ -static int closedir(DIR *dirp) -{ - if (dirp == NULL) { - /* invalid directory stream */ - DIRENT_SET_ERRNO (EBADF); - return -1; - } - - /* release search handle */ - if (dirp->search_handle != INVALID_HANDLE_VALUE) { - FindClose (dirp->search_handle); - dirp->search_handle = INVALID_HANDLE_VALUE; - } - - /* release directory structure */ - free (dirp); - return 0; -} - - -/***************************************************************************** - * Resets the position of the directory stream to which dirp refers to the - * beginning of the directory. It also causes the directory stream to refer - * to the current state of the corresponding directory, as a call to opendir() - * would have done. If dirp does not refer to a directory stream, the effect - * is undefined. - */ -static void rewinddir(DIR* dirp) -{ - if (dirp != NULL) { - /* release search handle */ - if (dirp->search_handle != INVALID_HANDLE_VALUE) { - FindClose (dirp->search_handle); - } - - /* open new search handle and retrieve the first entry */ - dirp->search_handle = FindFirstFileA (dirp->patt, &dirp->find_data); - if (dirp->search_handle != INVALID_HANDLE_VALUE) { - /* a directory entry is now waiting in memory */ - dirp->cached = 1; - } else { - /* failed to re-open directory: no directory entry in memory */ - dirp->cached = 0; - } - } -} - - -#ifdef __cplusplus -} -#endif -#endif /*DIRENT_H*/ |