diff options
Diffstat (limited to 'windows-NT/ndir.c')
| -rw-r--r-- | windows-NT/ndir.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/windows-NT/ndir.c b/windows-NT/ndir.c new file mode 100644 index 0000000..8b32e4f --- /dev/null +++ b/windows-NT/ndir.c @@ -0,0 +1,214 @@ +/* msd_dir.c - portable directory routines + Copyright (C) 1990 by Thorsten Ohl, td12@ddagsi3.bitnet + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 1, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. */ + +/* Everything non trivial in this code is from: @(#)msd_dir.c 1.4 + 87/11/06. A public domain implementation of BSD directory routines + for MS-DOS. Written by Michael Rendell ({uunet,utai}michael@garfield), + August 1897 */ + + +#include <io.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> + +#include <dos.h> + +#include <ndir.h> +#include "xalloc.h" + +static void free_dircontents (struct _dircontents *); + +/* find ALL files! */ +#define ATTRIBUTES (_A_RDONLY | _A_HIDDEN | _A_SYSTEM | _A_SUBDIR) + + + +DIR * +opendir (const char *name) +{ + struct _finddata_t find_buf; + DIR *dirp; + struct _dircontents *dp; + char name_buf[_MAX_PATH + 1]; + char *slash = ""; + long hFile; + + if (!name) + name = ""; + else if (*name) + { + const char *s; + int l = strlen (name); + + s = name + l - 1; + if ( !(l == 2 && *s == ':') && *s != '\\' && *s != '/') + slash = "/"; /* save to insert slash between path and "*.*" */ + } + + strcat (strcat (strcpy (name_buf, name), slash), "*.*"); + + dirp = xmalloc (sizeof (DIR)); + if (!dirp) return NULL; + + dirp->dd_loc = 0; + dirp->dd_contents = dirp->dd_cp = NULL; + + if ((hFile = _findfirst (name_buf, &find_buf)) < 0) + { + free (dirp); + return NULL; + } + + do + { + dp = xmalloc (sizeof (struct _dircontents)); + if (!dp) + { + free_dircontents (dirp->dd_contents); + return NULL; + } + + dp->_d_entry = xmalloc (strlen (find_buf.name) + 1); + if (!dp->_d_entry) + { + free (dp); + free_dircontents (dirp->dd_contents); + return NULL; + } + + if (dirp->dd_contents) + dirp->dd_cp = dirp->dd_cp->_d_next = dp; + else + dirp->dd_contents = dirp->dd_cp = dp; + + strcpy (dp->_d_entry, find_buf.name); + + dp->_d_next = NULL; + + } while (!_findnext (hFile, &find_buf)); + + dirp->dd_cp = dirp->dd_contents; + + _findclose(hFile); + + return dirp; +} + + +void +closedir (DIR *dirp) +{ + free_dircontents (dirp->dd_contents); + free (dirp); +} + + +struct direct * +readdir (DIR *dirp) +{ + static struct direct dp; + + if (!dirp->dd_cp) return NULL; + dp.d_namlen = dp.d_reclen = + strlen (strcpy (dp.d_name, dirp->dd_cp->_d_entry)); +#if 0 /* JB */ + strlwr (dp.d_name); /* JF */ +#endif + dp.d_ino = 0; + dirp->dd_cp = dirp->dd_cp->_d_next; + dirp->dd_loc++; + + return &dp; +} + + +void +seekdir (DIR *dirp, long off) +{ + long i = off; + struct _dircontents *dp; + + if (off < 0) + return; + for (dp = dirp->dd_contents; --i >= 0 && dp; dp = dp->_d_next) + ; + dirp->dd_loc = off - (i + 1); + dirp->dd_cp = dp; +} + + +long +telldir (DIR *dirp) +{ + return dirp->dd_loc; +} + + +/* Garbage collection */ + +static void +free_dircontents (struct _dircontents *dp) +{ + struct _dircontents *odp; + + while (dp) + { + if (dp->_d_entry) + free (dp->_d_entry); + dp = (odp = dp)->_d_next; + free (odp); + } +} + + +#ifdef TEST + +void main (int argc, char *argv[]); + +void +main (int argc, char *argv[]) +{ + static DIR *directory; + struct direct *entry = NULL; + + char *name = ""; + + if (argc > 1) + name = argv[1]; + + directory = opendir (name); + + if (!directory) + { + fprintf (stderr, "can't open directory `%s'.\n", name); + exit (2); + } + + while (entry = readdir (directory)) + printf ("> %s\n", entry->d_name); + + printf ("done.\n"); +} + +#endif /* TEST */ + +/* + * Local Variables: + * mode:C + * ChangeLog:ChangeLog + * compile-command:make + * End: + */ |