chore(3p/glog): Unvendor glog r/3784

... and build //third_party/nix with the one from nixpkgs.

Change-Id: Iae7f1772a31286f2c22955cdc1fe61ee82d112aa
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3016
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: grfn <grfn@gws.fyi>

1 files changed, 0 insertions, 1160 deletions

diff --git a/third_party/glog/src/windows/dirent.h b/third_party/glog/src/windows/dirent.h
deleted file mode 100644
index f7a46dafcbf1..000000000000
--- a/third_party/glog/src/windows/dirent.h
+++ /dev/null
@@ -1,1160 +0,0 @@
-/*
- * 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>
-
-/* 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;
-    DWORD n;
-    wchar_t *p;
-
-    /* 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) {
-        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 */
-    n = GetFullPathNameW (dirname, 0, NULL, NULL);
-#else
-    /* WinRT */
-    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)
-{
-    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);
-        }
-
-        /* Release search pattern */
-        free (dirp->patt);
-
-        /* 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;
-    DWORD error;
-
-    /* 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 open directory: no directory entry in memory */
-        dirp->cached = 0;
-        datap = NULL;
-
-        /* Set error code */
-        error = GetLastError ();
-        switch (error) {
-        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 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;
-
-    /* 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) {
-        return NULL;
-    }
-    {
-        int error;
-        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) {
-            /*
-             * 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.
-             */
-            goto exit_free;
-        }
-
-
-        /* Open directory stream using wide-character name */
-        dirp->wdirp = _wopendir (wname);
-        if (!dirp->wdirp) {
-            goto exit_free;
-        }
-
-    }
-
-    /* Success */
-    return dirp;
-
-    /* Failure */
-exit_free:
-    free (dirp);
-    return NULL;
-}
-
-/*
- * 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 */
-    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;
-
-#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 resulting 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*/