win10 PaddleOCR c++ cpu部署

# model load config
use_gpu 0
gpu_id  0
gpu_mem  4000
cpu_math_library_num_threads  10
use_mkldnn 0
# det config
max_side_len  960
det_db_thresh  0.3
det_db_box_thresh  0.5
det_db_unclip_ratio  1.6
use_polygon_score 1
det_model_dir  ./inference/det/
# cls config
use_angle_cls 0
cls_model_dir  ./inference/cls/
cls_thresh  0.9
# rec config
rec_model_dir  ./inference/rec/
char_list_file   ./ppocr_keys_v1.txt
# show the detection results
visualize 0
# use_tensorrt
use_tensorrt 0
use_fp16   0

#pragma once
/*
 * 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>
#include <ctype.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);
  static int strverscmp(const char* a, const char* b);
  /* For compatibility with Symbian */
#define wdirent _wdirent
#define WDIR _WDIR
#define wopendir _wopendir
#define wreaddir _wreaddir
#define wclosedir _wclosedir
#define wrewinddir _wrewinddir
/* Compatibility with older Microsoft compilers and non-Microsoft compilers */
#if !defined(_MSC_VER) || _MSC_VER < 1400
# define wcstombs_s dirent_wcstombs_s
# define mbstowcs_s dirent_mbstowcs_s
#endif
/* Optimize dirent_set_errno() away on modern Microsoft compilers */
#if defined(_MSC_VER) && _MSC_VER >= 1400
# define dirent_set_errno _set_errno
#endif
/* Internal utility functions */
  static WIN32_FIND_DATAW* dirent_first(_WDIR* dirp);
  static WIN32_FIND_DATAW* dirent_next(_WDIR* dirp);
#if !defined(_MSC_VER) || _MSC_VER < 1400
  static int dirent_mbstowcs_s(
    size_t* pReturnValue, wchar_t* wcstr, size_t sizeInWords,
    const char* mbstr, size_t count);
#endif
#if !defined(_MSC_VER) || _MSC_VER < 1400
  static int dirent_wcstombs_s(
    size_t* pReturnValue, char* mbstr, size_t sizeInBytes,
    const wchar_t* wcstr, size_t count);
#endif
#if !defined(_MSC_VER) || _MSC_VER < 1400
  static void dirent_set_errno(int error);
#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 _WDIR* _wopendir(const wchar_t* dirname)
  {
    wchar_t* p;
    /* Must have directory name */
    if (dirname == NULL || dirname[0] == '\0') {
      dirent_set_errno(ENOENT);
      return NULL;
    }
    /* Allocate new _WDIR structure */
    _WDIR* 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 there's 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 */
    DWORD n = GetFullPathNameW(dirname, 0, NULL, NULL);
#else
     /* WinRT */
    size_t 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 there's 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, n + 1, 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 doesn't 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)
  {
    /*
     * Read directory entry to buffer.  We can safely ignore the return
     * value as entry will be set to NULL in case of error.
     */
    struct _wdirent* entry;
    (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)
  {
    /* Read next directory entry */
    WIN32_FIND_DATAW* datap = dirent_next(dirp);
    if (!datap) {
      /* Return NULL to indicate end of directory */
      *result = NULL;
      return /*OK*/0;
    }
    /*
     * 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.
     */
    size_t 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 */
    DWORD 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;
    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)
  {
    if (!dirp) {
      dirent_set_errno(EBADF);
      return /*failure*/-1;
    }
    /* Release search handle */
    if (dirp->handle != INVALID_HANDLE_VALUE)
      FindClose(dirp->handle);
    /* Release search pattern */
    free(dirp->patt);
    /* Release directory structure */
    free(dirp);
    return /*success*/0;
  }
  /*
   * Rewind directory stream such that _wreaddir() returns the very first
   * file name again.
   */
  static void _wrewinddir(_WDIR* dirp)
  {
    if (!dirp)
      return;
    /* Release existing search handle */
    if (dirp->handle != INVALID_HANDLE_VALUE)
      FindClose(dirp->handle);
    /* Open new search handle */
    dirent_first(dirp);
  }
  /* Get first directory entry */
  static WIN32_FIND_DATAW* dirent_first(_WDIR* dirp)
  {
    if (!dirp)
      return NULL;
    /* Open directory and retrieve the first entry */
    dirp->handle = FindFirstFileExW(
      dirp->patt, FindExInfoStandard, &dirp->data,
      FindExSearchNameMatch, NULL, 0);
    if (dirp->handle == INVALID_HANDLE_VALUE)
      goto error;
    /* A directory entry is now waiting in memory */
    dirp->cached = 1;
    return &dirp->data;
  error:
    /* Failed to open directory: no directory entry in memory */
    dirp->cached = 0;
    /* Set error code */
    DWORD errorcode = GetLastError();
    switch (errorcode) {
    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 NULL;
  }
  /* Get next directory entry */
  static WIN32_FIND_DATAW* dirent_next(_WDIR* dirp)
  {
    /* Is the next directory entry already in cache? */
    if (dirp->cached) {
      /* Yes, a valid directory entry found in memory */
      dirp->cached = 0;
      return &dirp->data;
    }
    /* No directory entry in cache */
    if (dirp->handle == INVALID_HANDLE_VALUE)
      return NULL;
    /* Read the next directory entry from stream */
    if (FindNextFileW(dirp->handle, &dirp->data) == FALSE)
      goto exit_close;
    /* Success */
    return &dirp->data;
    /* Failure */
  exit_close:
    FindClose(dirp->handle);
    dirp->handle = INVALID_HANDLE_VALUE;
    return NULL;
  }
  /* Open directory stream using plain old C-string */
  static DIR* opendir(const char* dirname)
  {
    /* Must have directory name */
    if (dirname == NULL || dirname[0] == '\0') {
      dirent_set_errno(ENOENT);
      return NULL;
    }
    /* Allocate memory for DIR structure */
    struct DIR* dirp = (DIR*)malloc(sizeof(struct DIR));
    if (!dirp)
      return NULL;
    /* Convert directory name to wide-character string */
    wchar_t wname[PATH_MAX + 1];
    size_t n;
    int error = mbstowcs_s(&n, wname, PATH_MAX + 1, dirname, PATH_MAX + 1);
    if (error)
      goto exit_failure;
    /* Open directory stream using wide-character name */
    dirp->wdirp = _wopendir(wname);
    if (!dirp->wdirp)
      goto exit_failure;
    /* Success */
    return dirp;
    /* Failure */
  exit_failure:
    free(dirp);
    return NULL;
  }
  /* Read next directory entry */
  static struct dirent* readdir(DIR* dirp)
  {
    /*
     * Read directory entry to buffer.  We can safely ignore the return
     * value as entry will be set to NULL in case of error.
     */
    struct dirent* entry;
    (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)
  {
    /* Read next directory entry */
    WIN32_FIND_DATAW* datap = dirent_next(dirp->wdirp);
    if (!datap) {
      /* No more directory entries */
      *result = NULL;
      return /*OK*/0;
    }
    /* Attempt to convert file name to multi-byte string */
    size_t n;
    int error = 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 the program to
     * access files 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 = wcstombs_s(
        &n, entry->d_name, PATH_MAX + 1,
        datap->cAlternateFileName, PATH_MAX + 1);
    }
    if (!error) {
      /* Length of file name excluding zero terminator */
      entry->d_namlen = n - 1;
      /* File attributes */
      DWORD 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;
    return /*OK*/0;
  }
  /* Close directory stream */
  static int closedir(DIR* dirp)
  {
    int ok;
    if (!dirp)
      goto exit_failure;
    /* Close wide-character directory stream */
    ok = _wclosedir(dirp->wdirp);
    dirp->wdirp = NULL;
    /* Release multi-byte character version */
    free(dirp);
    return ok;
  exit_failure:
    /* Invalid directory stream */
    dirent_set_errno(EBADF);
    return /*failure*/-1;
  }
  /* Rewind directory stream to beginning */
  static void rewinddir(DIR* dirp)
  {
    if (!dirp)
      return;
    /* 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**))
  {
    int result;
    /* Open directory stream */
    DIR* dir = opendir(dirname);
    if (!dir) {
      /* Cannot open directory */
      return /*Error*/ -1;
    }
    /* Read directory entries to memory */
    struct dirent* tmp = NULL;
    struct dirent** files = NULL;
    size_t size = 0;
    size_t allocated = 0;
    while (1) {
      /* Allocate room for a temporary directory entry */
      if (!tmp) {
        tmp = (struct dirent*)malloc(sizeof(struct dirent));
        if (!tmp)
          goto exit_failure;
      }
      /* Read directory entry to temporary area */
      struct dirent* entry;
      if (readdir_r(dir, tmp, &entry) != /*OK*/0)
        goto exit_failure;
      /* Stop if we already read the last directory entry */
      if (entry == NULL)
        goto exit_success;
      /* Determine whether to include the entry in results */
      if (filter && !filter(tmp))
        continue;
      /* Enlarge pointer table to make room for another pointer */
      if (size >= allocated) {
        /* Compute number of entries in the new table */
        size_t num_entries = size * 2 + 16;
        /* Allocate new pointer table or enlarge existing */
        void* p = realloc(files, sizeof(void*) * num_entries);
        if (!p)
          goto exit_failure;
        /* Got the memory */
        files = (dirent**)p;
        allocated = num_entries;
      }
      /* Store the temporary entry to ptr table */
      files[size++] = tmp;
      tmp = NULL;
    }
  exit_failure:
    /* Release allocated file entries */
    for (size_t i = 0; i < size; i++) {
      free(files[i]);
    }
    /* Release the pointer table */
    free(files);
    files = NULL;
    /* Exit with error code */
    result = /*error*/ -1;
    goto exit_status;
  exit_success:
    /* Sort directory entries */
    qsort(files, size, sizeof(void*),
      (int (*) (const void*, const void*)) compare);
    /* Pass pointer table to caller */
    if (namelist)
      *namelist = files;
    /* Return the number of directory entries read */
    result = (int)size;
  exit_status:
    /* Release temporary directory entry, if we had one */
    free(tmp);
    /* Close directory stream */
    closedir(dir);
    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)
  {
    return strverscmp((*a)->d_name, (*b)->d_name);
  }
  /* Compare strings */
  static int strverscmp(const char* a, const char* b)
  {
    size_t i = 0;
    size_t j;
    /* Find first difference */
    while (a[i] == b[i]) {
      if (a[i] == '\0') {
        /* No difference */
        return 0;
      }
      ++i;
    }
    /* Count backwards and find the leftmost digit */
    j = i;
    while (j > 0 && isdigit(a[j - 1])) {
      --j;
    }
    /* Determine mode of comparison */
    if (a[j] == '0' || b[j] == '0') {
      /* Find the next non-zero digit */
      while (a[j] == '0' && a[j] == b[j]) {
        j++;
      }
      /* String with more digits is smaller, e.g 002 < 01 */
      if (isdigit(a[j])) {
        if (!isdigit(b[j])) {
          return -1;
        }
      }
      else if (isdigit(b[j])) {
        return 1;
      }
    }
    else if (isdigit(a[j]) && isdigit(b[j])) {
      /* Numeric comparison */
      size_t k1 = j;
      size_t k2 = j;
      /* Compute number of digits in each string */
      while (isdigit(a[k1])) {
        k1++;
      }
      while (isdigit(b[k2])) {
        k2++;
      }
      /* Number with more digits is bigger, e.g 999 < 1000 */
      if (k1 < k2)
        return -1;
      else if (k1 > k2)
        return 1;
    }
    /* Alphabetical comparison */
    return (int)((unsigned char)a[i]) - ((unsigned char)b[i]);
  }
  /* Convert multi-byte string to wide character string */
#if !defined(_MSC_VER) || _MSC_VER < 1400
  static int dirent_mbstowcs_s(
    size_t* pReturnValue, wchar_t* wcstr,
    size_t sizeInWords, const char* mbstr, size_t count)
  {
    /* Older Visual Studio or non-Microsoft compiler */
    size_t n = mbstowcs(wcstr, mbstr, sizeInWords);
    if (wcstr && n >= count)
      return /*error*/ 1;
    /* Zero-terminate output buffer */
    if (wcstr && sizeInWords) {
      if (n >= sizeInWords)
        n = sizeInWords - 1;
      wcstr[n] = 0;
    }
    /* Length of multi-byte string with zero terminator */
    if (pReturnValue) {
      *pReturnValue = n + 1;
    }
    /* Success */
    return 0;
  }
#endif
  /* Convert wide-character string to multi-byte string */
#if !defined(_MSC_VER) || _MSC_VER < 1400
  static int dirent_wcstombs_s(
    size_t* pReturnValue, char* mbstr,
    size_t sizeInBytes, const wchar_t* wcstr, size_t count)
  {
    /* Older Visual Studio or non-Microsoft compiler */
    size_t n = wcstombs(mbstr, wcstr, sizeInBytes);
    if (mbstr && n >= count)
      return /*error*/1;
    /* 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 */
    return 0;
  }
#endif
  /* Set errno variable */
#if !defined(_MSC_VER) || _MSC_VER < 1400
  static void dirent_set_errno(int error)
  {
    /* Non-Microsoft compiler or older Microsoft compiler */
    errno = error;
  }
#endif
#ifdef __cplusplus
}
#endif
#endif /*DIRENT_H*/