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-rw-r--r--source/wdirent.h369
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diff --git a/source/wdirent.h b/source/wdirent.h
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-/*****************************************************************************
- * 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*/