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Delete dirent_win32

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meancoot 2013-06-25 20:57:50 -04:00
parent 081232132f
commit 4f6df19db0
2 changed files with 0 additions and 178 deletions
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128
compat/dirent_win32.c
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/*
Implementation of POSIX directory browsing functions and types for Win32.
Author: Kevlin Henney (kevlin@acm.org, kevlin@curbralan.com)
History: Created March 1997. Updated June 2003 and July 2012.
Rights: See end of file.
*/
/*
Copyright Kevlin Henney, 1997, 2003, 2012. All rights reserved.
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose is hereby granted without fee, provided
that this copyright and permissions notice appear in all copies and
derivatives.
This software is supplied "as is" without express or implied warranty.
But that said, if there are any problems please get in touch.
*/
#include "dirent_win32.h"
#include <errno.h>
#include <io.h> /* _findfirst and _findnext set errno iff they return -1 */
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
typedef ptrdiff_t handle_type; /* C99's intptr_t not sufficiently portable */
struct DIR
{
handle_type handle; /* -1 for failed rewind */
struct _finddata_t info;
struct dirent result; /* d_name null iff first time */
char *name; /* null-terminated char string */
};
DIR *opendir(const char *name)
{
DIR *dir = 0;
if (name && name[0])
{
size_t base_length = strlen(name);
const char *all = /* search pattern must end with suitable wildcard */
strchr("/\\", name[base_length - 1]) ? "*" : "/*";
if ((dir = (DIR *) malloc(sizeof *dir)) != 0 &&
(dir->name = (char *) malloc(base_length + strlen(all) + 1)) != 0)
{
strcat(strcpy(dir->name, name), all);
if ((dir->handle =
(handle_type) _findfirst(dir->name, &dir->info)) != -1)
dir->result.d_name = 0;
else /* rollback */
{
free(dir->name);
free(dir);
dir = 0;
}
}
else /* rollback */
{
free(dir);
dir = 0;
errno = ENOMEM;
}
}
else
errno = EINVAL;
return dir;
}
int closedir(DIR *dir)
{
int result = -1;
if (dir)
{
if (dir->handle != -1)
result = _findclose(dir->handle);
free(dir->name);
free(dir);
}
if (result == -1) /* map all errors to EBADF */
errno = EBADF;
return result;
}
struct dirent *readdir(DIR *dir)
{
struct dirent *result = 0;
if (dir && dir->handle != -1)
{
if (!dir->result.d_name || _findnext(dir->handle, &dir->info) != -1)
{
result = &dir->result;
result->d_name = dir->info.name;
}
}
else
errno = EBADF;
return result;
}
void rewinddir(DIR *dir)
{
if (dir && dir->handle != -1)
{
_findclose(dir->handle);
dir->handle = (handle_type) _findfirst(dir->name, &dir->info);
dir->result.d_name = 0;
}
else
errno = EBADF;
}

50
compat/dirent_win32.h
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#ifndef DIRENT_INCLUDED
#define DIRENT_INCLUDED
/*
Declaration of POSIX directory browsing functions and types for Win32.
Author: Kevlin Henney (kevlin@acm.org, kevlin@curbralan.com)
History: Created March 1997. Updated June 2003.
Rights: See end of file.
*/
/*
Copyright Kevlin Henney, 1997, 2003. All rights reserved.
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose is hereby granted without fee, provided
that this copyright and permissions notice appear in all copies and
derivatives.
This software is supplied "as is" without express or implied warranty.
But that said, if there are any problems please get in touch.
*/
#ifdef __cplusplus
extern "C"
{
#endif
typedef struct DIR DIR;
struct dirent
{
char *d_name;
};
DIR *opendir(const char *);
int closedir(DIR *);
struct dirent *readdir(DIR *);
void rewinddir(DIR *);
#ifdef __cplusplus
}
#endif
#endif