diff options
Diffstat (limited to 'app/bin/include/dirent.h')
| -rw-r--r-- | app/bin/include/dirent.h | 1254 |
1 files changed, 1254 insertions, 0 deletions
diff --git a/app/bin/include/dirent.h b/app/bin/include/dirent.h new file mode 100644 index 0000000..fdfbe5b --- /dev/null +++ b/app/bin/include/dirent.h @@ -0,0 +1,1254 @@ +/*
+ * Dirent interface for Microsoft Visual Studio
+ *
+ * Copyright (C) 2006-2012 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
+
+ /*
+ * 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_MAX + 1];
+ };
+ 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_MAX + 1];
+ };
+ 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 = NULL;
+ int error;
+
+ /* 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 != NULL) {
+ DWORD n;
+
+ /* 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 there's no way to convert relative paths
+ * into absolute paths, so just assume it is an absolute path.
+ */
+# if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
+ n = wcslen(dirname);
+# else
+ n = GetFullPathNameW(dirname, 0, NULL, NULL);
+# endif
+
+ /* Allocate room for absolute directory name and search pattern */
+ dirp->patt = (wchar_t*)malloc(sizeof(wchar_t) * n + 16);
+ if (dirp->patt) {
+
+ /*
+ * 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 there's no way to convert relative paths
+ * into absolute paths, so just assume it is an absolute path.
+ */
+# if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
+ wcsncpy_s(dirp->patt, n + 1, dirname, n);
+# else
+ n = GetFullPathNameW(dirname, n, dirp->patt, NULL);
+# endif
+ if (n > 0) {
+ wchar_t *p;
+
+ /* Append search pattern \* to the directory name */
+ p = dirp->patt + n;
+ if (dirp->patt < p) {
+ switch (p[-1]) {
+ case '\\':
+ case '/':
+ case ':':
+ /* Directory ends in path separator, e.g. c:\temp\ */
+ /*NOP*/;
+ break;
+
+ default:
+ /* Directory name doesn't end in path separator */
+ *p++ = '\\';
+ }
+ }
+ *p++ = '*';
+ *p = '\0';
+
+ /* Open directory stream and retrieve the first entry */
+ if (dirent_first(dirp)) {
+ /* Directory stream opened successfully */
+ error = 0;
+ }
+ else {
+ /* Cannot retrieve first entry */
+ error = 1;
+ dirent_set_errno(ENOENT);
+ }
+
+ }
+ else {
+ /* Cannot retrieve full path name */
+ dirent_set_errno(ENOENT);
+ error = 1;
+ }
+
+ }
+ else {
+ /* Cannot allocate memory for search pattern */
+ error = 1;
+ }
+
+ }
+ else {
+ /* Cannot allocate _WDIR structure */
+ error = 1;
+ }
+
+ /* Clean up in case of error */
+ if (error && dirp) {
+ _wclosedir(dirp);
+ dirp = NULL;
+ }
+
+ return dirp;
+ }
+
+ /*
+ * 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);
+ dirp->handle = INVALID_HANDLE_VALUE;
+ }
+
+ /* Release search pattern */
+ if (dirp->patt) {
+ free(dirp->patt);
+ dirp->patt = NULL;
+ }
+
+ /* 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;
+
+ /* 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 re-open directory: no directory entry in memory */
+ dirp->cached = 0;
+ datap = NULL;
+
+ }
+ 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;
+ int error;
+
+ /* 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) {
+ 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) {
+
+ /* Open directory stream using wide-character name */
+ dirp->wdirp = _wopendir(wname);
+ if (dirp->wdirp) {
+ /* Directory stream opened */
+ error = 0;
+ }
+ else {
+ /* Failed to open directory stream */
+ error = 1;
+ }
+
+ }
+ else {
+ /*
+ * 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.
+ */
+ error = 1;
+ }
+
+ }
+ else {
+ /* Cannot allocate DIR structure */
+ error = 1;
+ }
+
+ /* Clean up in case of error */
+ if (error && dirp) {
+ free(dirp);
+ dirp = NULL;
+ }
+
+ return dirp;
+ }
+
+ /*
+ * 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 8+3 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 */
+ if (tmp) {
+ 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;
+ int n;
+ size_t len;
+ UINT cp;
+ DWORD flags;
+
+ /* Determine code page for multi-byte string */
+ if (AreFileApisANSI()) {
+ /* Default ANSI code page */
+ cp = GetACP();
+ }
+ else {
+ /* Default OEM code page */
+ cp = GetOEMCP();
+ }
+
+ /*
+ * Determine flags based on the character set. For more information,
+ * please see https://docs.microsoft.com/fi-fi/windows/desktop/api/stringapiset/nf-stringapiset-multibytetowidechar
+ */
+ switch (cp) {
+ case 42:
+ case 50220:
+ case 50221:
+ case 50222:
+ case 50225:
+ case 50227:
+ case 50229:
+ case 57002:
+ case 57003:
+ case 57004:
+ case 57005:
+ case 57006:
+ case 57007:
+ case 57008:
+ case 57009:
+ case 57010:
+ case 57011:
+ case 65000:
+ /* MultiByteToWideChar does not support MB_ERR_INVALID_CHARS */
+ flags = 0;
+ break;
+
+ default:
+ /*
+ * Ask MultiByteToWideChar to return an error if a multi-byte
+ * character cannot be converted to a wide-character.
+ */
+ flags = MB_ERR_INVALID_CHARS;
+ }
+
+ /* Compute the length of input string without zero-terminator */
+ len = 0;
+ while (mbstr[len] != '\0' && len < count) {
+ len++;
+ }
+
+ /* Convert to wide-character string */
+ n = MultiByteToWideChar(
+ /* Source code page */ cp,
+ /* Flags */ flags,
+ /* Pointer to string to convert */ mbstr,
+ /* Size of multi-byte string */ (int)len,
+ /* Pointer to output buffer */ wcstr,
+ /* Size of output buffer */ sizeInWords - 1
+ );
+
+ /* Ensure that output buffer is zero-terminated */
+ wcstr[n] = '\0';
+
+ /* Return length of wide-character string with zero-terminator */
+ *pReturnValue = (size_t)(n + 1);
+
+ /* Return zero if conversion succeeded */
+ if (n > 0) {
+ error = 0;
+ }
+ else {
+ error = 1;
+ }
+ return 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 n;
+ int error;
+ UINT cp;
+ size_t len;
+ BOOL flag = 0;
+ LPBOOL pflag;
+
+ /* Determine code page for multi-byte string */
+ if (AreFileApisANSI()) {
+ /* Default ANSI code page */
+ cp = GetACP();
+ }
+ else {
+ /* Default OEM code page */
+ cp = GetOEMCP();
+ }
+
+ /* Compute the length of input string without zero-terminator */
+ len = 0;
+ while (wcstr[len] != '\0' && len < count) {
+ len++;
+ }
+
+ /*
+ * Determine if we can ask WideCharToMultiByte to return information on
+ * broken characters. For more information, please see
+ * https://docs.microsoft.com/en-us/windows/desktop/api/stringapiset/nf-stringapiset-widechartomultibyte
+ */
+ switch (cp) {
+ case CP_UTF7:
+ case CP_UTF8:
+ /*
+ * WideCharToMultiByte fails if we request information on default
+ * characters. This is just a nuisance but doesn't affect the
+ * conversion: if Windows is configured to use UTF-8, then the default
+ * character should not be needed anyway.
+ */
+ pflag = NULL;
+ break;
+
+ default:
+ /*
+ * Request that WideCharToMultiByte sets the flag if it uses the
+ * default character.
+ */
+ pflag = &flag;
+ }
+
+ /* Convert wide-character string to multi-byte character string */
+ n = WideCharToMultiByte(
+ /* Target code page */ cp,
+ /* Flags */ 0,
+ /* Pointer to unicode string */ wcstr,
+ /* Length of unicode string */ (int)len,
+ /* Pointer to output buffer */ mbstr,
+ /* Size of output buffer */ sizeInBytes - 1,
+ /* Default character */ NULL,
+ /* Whether default character was used or not */ pflag
+ );
+
+ /* Ensure that output buffer is zero-terminated */
+ mbstr[n] = '\0';
+
+ /* Return length of multi-byte string with zero-terminator */
+ *pReturnValue = (size_t)(n + 1);
+
+ /* Return zero if conversion succeeded without using default characters */
+ if (n > 0 && flag == 0) {
+ error = 0;
+ }
+ else {
+ error = 1;
+ }
+ return 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*/#pragma once
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