sl@0: /* $LP: LPlib/source/LPdir_win.c,v 1.10 2004/08/26 13:36:05 _cvs_levitte Exp $ */
sl@0: /*
sl@0:  * Copyright (c) 2004, Richard Levitte <richard@levitte.org>
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
sl@0:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
sl@0:  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
sl@0:  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
sl@0:  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
sl@0:  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
sl@0:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
sl@0:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
sl@0:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
sl@0:  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  */
sl@0: #include <windows.h>
sl@0: #include <tchar.h>
sl@0: #ifndef LPDIR_H
sl@0: #include "LPdir.h"
sl@0: #endif
sl@0: 
sl@0: /* We're most likely overcautious here, but let's reserve for
sl@0:     broken WinCE headers and explicitly opt for UNICODE call.
sl@0:     Keep in mind that our WinCE builds are compiled with -DUNICODE
sl@0:     [as well as -D_UNICODE]. */
sl@0: #if defined(LP_SYS_WINCE) && !defined(FindFirstFile)
sl@0: # define FindFirstFile FindFirstFileW
sl@0: #endif
sl@0: #if defined(LP_SYS_WINCE) && !defined(FindFirstFile)
sl@0: # define FindNextFile FindNextFileW
sl@0: #endif
sl@0: 
sl@0: #ifndef NAME_MAX
sl@0: #define NAME_MAX 255
sl@0: #endif
sl@0: 
sl@0: struct LP_dir_context_st
sl@0: {
sl@0:   WIN32_FIND_DATA ctx;
sl@0:   HANDLE handle;
sl@0:   char entry_name[NAME_MAX+1];
sl@0: };
sl@0: 
sl@0: const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory)
sl@0: {
sl@0:   struct dirent *direntry = NULL;
sl@0: 
sl@0:   if (ctx == NULL || directory == NULL)
sl@0:     {
sl@0:       errno = EINVAL;
sl@0:       return 0;
sl@0:     }
sl@0: 
sl@0:   errno = 0;
sl@0:   if (*ctx == NULL)
sl@0:     {
sl@0:       *ctx = (LP_DIR_CTX *)malloc(sizeof(LP_DIR_CTX));
sl@0:       if (*ctx == NULL)
sl@0: 	{
sl@0: 	  errno = ENOMEM;
sl@0: 	  return 0;
sl@0: 	}
sl@0:       memset(*ctx, '\0', sizeof(LP_DIR_CTX));
sl@0: 
sl@0:       if (sizeof(TCHAR) != sizeof(char))
sl@0: 	{
sl@0: 	  TCHAR *wdir = NULL;
sl@0: 	  /* len_0 denotes string length *with* trailing 0 */ 
sl@0: 	  size_t index = 0,len_0 = strlen(directory) + 1;
sl@0: 
sl@0: 	  wdir = (TCHAR *)malloc(len_0 * sizeof(TCHAR));
sl@0: 	  if (wdir == NULL)
sl@0: 	    {
sl@0: 	      free(*ctx);
sl@0: 	      *ctx = NULL;
sl@0: 	      errno = ENOMEM;
sl@0: 	      return 0;
sl@0: 	    }
sl@0: 
sl@0: #ifdef LP_MULTIBYTE_AVAILABLE
sl@0: 	  if (!MultiByteToWideChar(CP_ACP, 0, directory, len_0, (WCHAR *)wdir, len_0))
sl@0: #endif
sl@0: 	    for (index = 0; index < len_0; index++)
sl@0: 	      wdir[index] = (TCHAR)directory[index];
sl@0: 
sl@0: 	  (*ctx)->handle = FindFirstFile(wdir, &(*ctx)->ctx);
sl@0: 
sl@0: 	  free(wdir);
sl@0: 	}
sl@0:       else
sl@0: 	(*ctx)->handle = FindFirstFile((TCHAR *)directory, &(*ctx)->ctx);
sl@0: 
sl@0:       if ((*ctx)->handle == INVALID_HANDLE_VALUE)
sl@0: 	{
sl@0: 	  free(*ctx);
sl@0: 	  *ctx = NULL;
sl@0: 	  errno = EINVAL;
sl@0: 	  return 0;
sl@0: 	}
sl@0:     }
sl@0:   else
sl@0:     {
sl@0:       if (FindNextFile((*ctx)->handle, &(*ctx)->ctx) == FALSE)
sl@0: 	{
sl@0: 	  return 0;
sl@0: 	}
sl@0:     }
sl@0: 
sl@0:   if (sizeof(TCHAR) != sizeof(char))
sl@0:     {
sl@0:       TCHAR *wdir = (*ctx)->ctx.cFileName;
sl@0:       size_t index, len_0 = 0;
sl@0: 
sl@0:       while (wdir[len_0] && len_0 < (sizeof((*ctx)->entry_name) - 1)) len_0++;
sl@0:       len_0++;
sl@0: 
sl@0: #ifdef LP_MULTIBYTE_AVAILABLE
sl@0:       if (!WideCharToMultiByte(CP_ACP, 0, (WCHAR *)wdir, len_0, (*ctx)->entry_name,
sl@0: 			       sizeof((*ctx)->entry_name), NULL, 0))
sl@0: #endif
sl@0: 	for (index = 0; index < len_0; index++)
sl@0: 	  (*ctx)->entry_name[index] = (char)wdir[index];
sl@0:     }
sl@0:   else
sl@0:     strncpy((*ctx)->entry_name, (const char *)(*ctx)->ctx.cFileName,
sl@0: 	    sizeof((*ctx)->entry_name)-1);
sl@0: 
sl@0:   (*ctx)->entry_name[sizeof((*ctx)->entry_name)-1] = '\0';
sl@0: 
sl@0:   return (*ctx)->entry_name;
sl@0: }
sl@0: 
sl@0: int LP_find_file_end(LP_DIR_CTX **ctx)
sl@0: {
sl@0:   if (ctx != NULL && *ctx != NULL)
sl@0:     {
sl@0:       FindClose((*ctx)->handle);
sl@0:       free(*ctx);
sl@0:       *ctx = NULL;
sl@0:       return 1;
sl@0:     }
sl@0:   errno = EINVAL;
sl@0:   return 0;
sl@0: }