mariadb/mysys/my_os2dirsrch.c

/* Copyright (C) Yuri Dario & 2000-2003 MySQL AB
   All the above parties has a full, independent copyright to
   the following code, including the right to use the code in
   any manner without any demands from the other parties.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
   MA 02111-1307, USA */


/* Win32 directory search emulation */

#if defined(OS2)

long  _findfirst( char* path, struct _finddata_t* dos_file)
{
  HDIR		  hdir = HDIR_CREATE;
  APIRET	  rc;
  FILEFINDBUF3   buf3;
  ULONG	  entries = 1;

#ifdef _DEBUG
  printf( "_findfirst path %s\n", path);
#endif

  memset( &buf3, 0, sizeof( buf3));
  rc = DosFindFirst(
		    path,  /* The ASCIIZ path name of the file or subdirectory to be found. */
		    &hdir,	  /*  The handle associated with this DosFindFirst request. */
		    FILE_NORMAL | FILE_DIRECTORY,  /*  Attribute value that determines the file objects to be searched for. */
		    &buf3,	  /*  Result buffer. */
		    sizeof( buf3),	     /*  The length, in bytes, of pfindbuf. */
		    &entries,  /*  Pointer to the number of entries: */
		    FIL_STANDARD);  /*  The level of file information required. */

#ifdef _DEBUG
  printf( "_findfirst rc=%d hdir=%d entries=%d->%s\n", rc, hdir, entries,
	  buf3.achName);
#endif

  if (rc /* && entries == 0 */)
    return -1;

  if (dos_file)
  {
    memset( dos_file, 0, sizeof( struct _finddata_t));
    strcpy( dos_file->name, buf3.achName);
    dos_file->size = buf3.cbFile;
    dos_file->attrib = buf3.attrFile;
  }
  return (ULONG) hdir;
}


long  _findnext( long hdir, struct _finddata_t* dos_file)
{
  APIRET	  rc;
  FILEFINDBUF3   buf3;
  ULONG	  entries = 1;

  memset( &buf3, 0, sizeof( buf3));
  rc = DosFindNext(hdir,
		   &buf3,		/* Result buffer. */
		   sizeof( buf3),	/* Length, in bytes, of pfindbuf. */
		   &entries);		/* Pointer to the number of entries */

#ifdef _DEBUG
  printf( "_findnext rc=%d hdir=%d entries=%d->%s\n", rc, hdir, entries,
	  buf3.achName);
#endif

  if (rc /* && entries == 0 */)
    return -1;

  if (dos_file)
  {
    memset( dos_file, 0, sizeof( struct _finddata_t));
    strcpy( dos_file->name, buf3.achName);
    dos_file->size = buf3.cbFile;
    dos_file->attrib = buf3.attrFile;
  }
  return 0;
}

void  _findclose( long hdir)
{
   APIRET	  rc;

   rc = DosFindClose( hdir);
#ifdef _DEBUG
   printf( "_findclose rc=%d hdir=%d\n", rc, hdir);
#endif
}

DIR* opendir(char* path)
{
  DIR* dir = (DIR*) calloc(1, sizeof( DIR));
  char buffer[260];
  APIRET	  rc;
  ULONG	  entries = 1;

  strmov(strmov(buffer, path), "*.*");

#ifdef _DEBUG
  printf( "_findfirst path %s\n", buffer);
#endif

  dir->hdir = HDIR_CREATE;
  memset( &dir->buf3, 0, sizeof( dir->buf3));
  rc = DosFindFirst(
		    buffer,	/*  Address of the ASCIIZ path name of the file or subdirectory to be found. */
		    &dir->hdir,	  /*  Address of the handle associated with this DosFindFirst request. */
		    FILE_NORMAL | FILE_DIRECTORY,  /*  Attribute value that determines the file objects to be searched for. */
		    &dir->buf3,     /*  Result buffer. */
		    sizeof( dir->buf3),	  /*  The length, in bytes, of pfindbuf. */
		    &entries,  /*  Pointer to the number of entries: */
		    FIL_STANDARD);  /*  The level of file information required. */

#ifdef _DEBUG
  printf( "opendir rc=%d hdir=%d entries=%d->%s\n", rc, dir->hdir, entries, dir->buf3.achName);
#endif

  if (rc /* && entries == 0 */)
    return NULL;

  return dir;
}


struct dirent* readdir( DIR* dir)
{
  APIRET	  rc;
  ULONG	  entries = 1;

  if (!dir->buf3.achName[0]) /* file not found on previous query */
    return NULL;

  /* copy last file name */
  strcpy( dir->ent.d_name, dir->buf3.achName);

  /* query next file */
  memset( &dir->buf3, 0, sizeof( dir->buf3));
  rc= DosFindNext(
		  dir->hdir,
		  &dir->buf3,		/* Result buffer. */
		  sizeof(dir->buf3),	/* Length, in bytes, of pfindbuf. */
		   &entries);		/* Pointer to the number of entries */

#ifdef _DEBUG
  printf( "_findnext rc=%d hdir=%d entries=%d->%s\n", rc, dir->hdir, entries,
	  dir->buf3.achName);
#endif

  if (rc /* && entries == 0 */)
    *dir->buf3.achName= 0;		/* reset name for next query */

  return &dir->ent;
}


int closedir (DIR *dir)
{
  APIRET	  rc;

  rc = DosFindClose( dir->hdir);
#ifdef _DEBUG
  printf( "_findclose rc=%d hdir=%d\n", rc, dir->hdir);
#endif
  free(dir);
  return 0;
}

#endif /* OS2 */