--- /dev/null
+/* SPDX-License-Identifier: MIT
+ * Dirent interface for Microsoft Visual Studio
+ * Version 1.21
+ * Copyright (C) 2006-2012 Toni Ronkko
+ * 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>
+
+/* Maximum length of file name */
+#if !defined(PATH_MAX)
+# define PATH_MAX MAX_PATH
+#endif
+
+/* File type flags for d_type */
+#define DT_UNKNOWN 0
+#define DT_REG S_IFREG
+#define DT_DIR S_IFDIR
+#define DT_CHR S_IFCHR
+
+/*
+ * 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_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
+
+/* Wide-character version */
+struct _wdirent {
+ /* Always zero */
+ long d_ino;
+
+ /* 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];
+};
+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;
+
+static _WDIR *_wopendir(const wchar_t *dirname);
+static int _wclosedir(_WDIR *dirp);
+
+/* For compatibility with Symbian */
+#define wdirent _wdirent
+#define WDIR _WDIR
+#define wopendir _wopendir
+#define wclosedir _wclosedir
+
+/* Multi-byte character versions */
+struct dirent {
+ /* Always zero */
+ long d_ino;
+
+ /* 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];
+};
+typedef struct dirent dirent;
+
+struct DIR {
+ struct dirent ent;
+ struct _WDIR *wdirp;
+};
+typedef struct DIR DIR;
+
+static DIR *opendir(const char *dirname);
+static struct dirent *readdir(DIR *dirp);
+static int closedir(DIR *dirp);
+
+/* 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 its 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 its 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;
+}
+
+/*
+ * 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;
+}
+
+/* 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) */
+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];
+ size_t n;
+
+ /* Convert directory name to wide-character string */
+ error = dirent_mbstowcs_s(&n, wname, PATH_MAX,
+ dirname, PATH_MAX);
+ 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.
+ *
+ * When working with text consoles, please note that file names
+ * returned by readdir() are represented in the default ANSI code
+ * page while any output toconsole is typically formatted on another
+ * code page. Thus, non-ASCII characters in file names will not usually
+ * display correctly on console. The problem can be fixed in two ways:
+ * (1) change the character set of console to 1252 using chcp utility
+ * and use Lucida Console font, or (2) use _cprintf function when
+ * writing to console. The _cprinf() will re-encode ANSI strings to the
+ * console code page so many non-ASCII characters will display correctly.
+ */
+static struct dirent*
+readdir(DIR *dirp)
+{
+ WIN32_FIND_DATAW *datap;
+ struct dirent *entp;
+
+ /* 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, dirp->ent.d_name,
+ PATH_MAX, datap->cFileName, PATH_MAX);
+
+ /*
+ * 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, dirp->ent.d_name, PATH_MAX,
+ datap->cAlternateFileName, PATH_MAX);
+ }
+
+ if (!error) {
+ DWORD attr;
+
+ /* Initialize directory entry for return */
+ entp = &dirp->ent;
+
+ /* Length of file name excluding zero terminator */
+ entp->d_namlen = n - 1;
+
+ /* File attributes */
+ attr = datap->dwFileAttributes;
+ if ((attr & FILE_ATTRIBUTE_DEVICE) != 0)
+ entp->d_type = DT_CHR;
+ else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0)
+ entp->d_type = DT_DIR;
+ else
+ entp->d_type = DT_REG;
+
+ /* Reset dummy fields */
+ entp->d_ino = 0;
+ entp->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.
+ */
+ entp = &dirp->ent;
+ entp->d_name[0] = '?';
+ entp->d_name[1] = '\0';
+ entp->d_namlen = 1;
+ entp->d_type = DT_UNKNOWN;
+ entp->d_ino = 0;
+ entp->d_reclen = 0;
+ }
+
+ } else {
+ /* No more directory entries */
+ entp = NULL;
+ }
+
+ return entp;
+}
+
+/*
+ * 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;
+}
+
+/* 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 resuting multi-byte string WITH zero
+ *terminator
+ */
+ if (pReturnValue)
+ *pReturnValue = n + 1;
+
+ /* Success */
+ error = 0;
+
+ } else {
+
+ /* Could not convert string */
+ error = 1;
+
+ }
+ #endif
+
+ 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 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;
+ }
+ #endif
+
+ 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*/
git.droids-corp.org / dpdk.git / commitdiff