diff options
Diffstat (limited to 'protocols/Sametime/src/glib/dirent.c')
-rw-r--r-- | protocols/Sametime/src/glib/dirent.c | 341 |
1 files changed, 341 insertions, 0 deletions
diff --git a/protocols/Sametime/src/glib/dirent.c b/protocols/Sametime/src/glib/dirent.c new file mode 100644 index 0000000000..26b6cb1e54 --- /dev/null +++ b/protocols/Sametime/src/glib/dirent.c @@ -0,0 +1,341 @@ +/*
+ * dirent.c
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is a part of the mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER within the package.
+ *
+ * Derived from DIRLIB.C by Matt J. Weinstein
+ * This note appears in the DIRLIB.H
+ * DIRLIB.H by M. J. Weinstein Released to public domain 1-Jan-89
+ *
+ * Updated by Jeremy Bettis <jeremy@hksys.com>
+ * Significantly revised and rewinddir, seekdir and telldir added by Colin
+ * Peters <colin@fu.is.saga-u.ac.jp>
+ *
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <io.h>
+#include <direct.h>
+
+#include "dirent.h"
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h> /* for GetFileAttributes */
+
+#include <tchar.h>
+
+#ifdef _UNICODE
+#define _tdirent _wdirent
+#define _TDIR _WDIR
+#define _topendir _wopendir
+#define _tclosedir _wclosedir
+#define _treaddir _wreaddir
+#define _trewinddir _wrewinddir
+#define _ttelldir _wtelldir
+#define _tseekdir _wseekdir
+#else
+#define _tdirent dirent
+#define _TDIR DIR
+#define _topendir opendir
+#define _tclosedir closedir
+#define _treaddir readdir
+#define _trewinddir rewinddir
+#define _ttelldir telldir
+#define _tseekdir seekdir
+#endif
+
+#define SUFFIX _T("*")
+#define SLASH _T("\\")
+
+
+/*
+ * opendir
+ *
+ * Returns a pointer to a DIR structure appropriately filled in to begin
+ * searching a directory.
+ */
+_TDIR *
+_topendir (const _TCHAR *szPath)
+{
+ _TDIR *nd;
+ unsigned int rc;
+ _TCHAR szFullPath[MAX_PATH];
+
+ errno = 0;
+
+ if (!szPath)
+ {
+ errno = EFAULT;
+ return (_TDIR *) 0;
+ }
+
+ if (szPath[0] == _T('\0'))
+ {
+ errno = ENOTDIR;
+ return (_TDIR *) 0;
+ }
+
+ /* Attempt to determine if the given path really is a directory. */
+ rc = GetFileAttributes (szPath);
+ if (rc == (unsigned int)-1)
+ {
+ /* call GetLastError for more error info */
+ errno = ENOENT;
+ return (_TDIR *) 0;
+ }
+ if (!(rc & FILE_ATTRIBUTE_DIRECTORY))
+ {
+ /* Error, entry exists but not a directory. */
+ errno = ENOTDIR;
+ return (_TDIR *) 0;
+ }
+
+ /* Make an absolute pathname. */
+ _tfullpath (szFullPath, szPath, MAX_PATH);
+
+ /* Allocate enough space to store DIR structure and the complete
+ * directory path given. */
+ nd = (_TDIR *) malloc (sizeof (_TDIR) + (_tcslen(szFullPath) + _tcslen (SLASH) +
+ _tcslen(SUFFIX) + 1) * sizeof(_TCHAR));
+
+ if (!nd)
+ {
+ /* Error, out of memory. */
+ errno = ENOMEM;
+ return (_TDIR *) 0;
+ }
+
+ /* Create the search expression. */
+ _tcscpy (nd->dd_name, szFullPath);
+
+ /* Add on a slash if the path does not end with one. */
+ if (nd->dd_name[0] != _T('\0') &&
+ nd->dd_name[_tcslen (nd->dd_name) - 1] != _T('/') &&
+ nd->dd_name[_tcslen (nd->dd_name) - 1] != _T('\\'))
+ {
+ _tcscat (nd->dd_name, SLASH);
+ }
+
+ /* Add on the search pattern */
+ _tcscat (nd->dd_name, SUFFIX);
+
+ /* Initialize handle to -1 so that a premature closedir doesn't try
+ * to call _findclose on it. */
+ nd->dd_handle = -1;
+
+ /* Initialize the status. */
+ nd->dd_stat = 0;
+
+ /* Initialize the dirent structure. ino and reclen are invalid under
+ * Win32, and name simply points at the appropriate part of the
+ * findfirst_t structure. */
+ nd->dd_dir.d_ino = 0;
+ nd->dd_dir.d_reclen = 0;
+ nd->dd_dir.d_namlen = 0;
+ memset (nd->dd_dir.d_name, 0, FILENAME_MAX);
+
+ return nd;
+}
+
+
+/*
+ * readdir
+ *
+ * Return a pointer to a dirent structure filled with the information on the
+ * next entry in the directory.
+ */
+struct _tdirent *
+_treaddir (_TDIR * dirp)
+{
+ errno = 0;
+
+ /* Check for valid DIR struct. */
+ if (!dirp)
+ {
+ errno = EFAULT;
+ return (struct _tdirent *) 0;
+ }
+
+ if (dirp->dd_stat < 0)
+ {
+ /* We have already returned all files in the directory
+ * (or the structure has an invalid dd_stat). */
+ return (struct _tdirent *) 0;
+ }
+ else if (dirp->dd_stat == 0)
+ {
+ /* We haven't started the search yet. */
+ /* Start the search */
+ dirp->dd_handle = _tfindfirst (dirp->dd_name, &(dirp->dd_dta));
+
+ if (dirp->dd_handle == -1)
+ {
+ /* Whoops! Seems there are no files in that
+ * directory. */
+ dirp->dd_stat = -1;
+ }
+ else
+ {
+ dirp->dd_stat = 1;
+ }
+ }
+ else
+ {
+ /* Get the next search entry. */
+ if (_tfindnext (dirp->dd_handle, &(dirp->dd_dta)))
+ {
+ /* We are off the end or otherwise error.
+ _findnext sets errno to ENOENT if no more file
+ Undo this. */
+ DWORD winerr = GetLastError();
+ if (winerr == ERROR_NO_MORE_FILES)
+ errno = 0;
+ _findclose (dirp->dd_handle);
+ dirp->dd_handle = -1;
+ dirp->dd_stat = -1;
+ }
+ else
+ {
+ /* Update the status to indicate the correct
+ * number. */
+ dirp->dd_stat++;
+ }
+ }
+
+ if (dirp->dd_stat > 0)
+ {
+ /* Successfully got an entry. Everything about the file is
+ * already appropriately filled in except the length of the
+ * file name. */
+ dirp->dd_dir.d_namlen = _tcslen (dirp->dd_dta.name);
+ _tcscpy (dirp->dd_dir.d_name, dirp->dd_dta.name);
+ return &dirp->dd_dir;
+ }
+
+ return (struct _tdirent *) 0;
+}
+
+
+/*
+ * closedir
+ *
+ * Frees up resources allocated by opendir.
+ */
+int
+_tclosedir (_TDIR * dirp)
+{
+ int rc;
+
+ errno = 0;
+ rc = 0;
+
+ if (!dirp)
+ {
+ errno = EFAULT;
+ return -1;
+ }
+
+ if (dirp->dd_handle != -1)
+ {
+ rc = _findclose (dirp->dd_handle);
+ }
+
+ /* Delete the dir structure. */
+ free (dirp);
+
+ return rc;
+}
+
+/*
+ * rewinddir
+ *
+ * Return to the beginning of the directory "stream". We simply call findclose
+ * and then reset things like an opendir.
+ */
+void
+_trewinddir (_TDIR * dirp)
+{
+ errno = 0;
+
+ if (!dirp)
+ {
+ errno = EFAULT;
+ return;
+ }
+
+ if (dirp->dd_handle != -1)
+ {
+ _findclose (dirp->dd_handle);
+ }
+
+ dirp->dd_handle = -1;
+ dirp->dd_stat = 0;
+}
+
+/*
+ * telldir
+ *
+ * Returns the "position" in the "directory stream" which can be used with
+ * seekdir to go back to an old entry. We simply return the value in stat.
+ */
+long
+_ttelldir (_TDIR * dirp)
+{
+ errno = 0;
+
+ if (!dirp)
+ {
+ errno = EFAULT;
+ return -1;
+ }
+ return dirp->dd_stat;
+}
+
+/*
+ * seekdir
+ *
+ * Seek to an entry previously returned by telldir. We rewind the directory
+ * and call readdir repeatedly until either dd_stat is the position number
+ * or -1 (off the end). This is not perfect, in that the directory may
+ * have changed while we weren't looking. But that is probably the case with
+ * any such system.
+ */
+void
+_tseekdir (_TDIR * dirp, long lPos)
+{
+ errno = 0;
+
+ if (!dirp)
+ {
+ errno = EFAULT;
+ return;
+ }
+
+ if (lPos < -1)
+ {
+ /* Seeking to an invalid position. */
+ errno = EINVAL;
+ return;
+ }
+ else if (lPos == -1)
+ {
+ /* Seek past end. */
+ if (dirp->dd_handle != -1)
+ {
+ _findclose (dirp->dd_handle);
+ }
+ dirp->dd_handle = -1;
+ dirp->dd_stat = -1;
+ }
+ else
+ {
+ /* Rewind and read forward to the appropriate index. */
+ _trewinddir (dirp);
+
+ while ((dirp->dd_stat < lPos) && _treaddir (dirp))
+ ;
+ }
+}
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